Bump tcell for windows update

Co-authored-by: taconi <igor.tacoi@protonmail.com>

.github/ISSUE_TEMPLATE

@@ -2,7 +2,7 @@
 
 ## Specifications
 
-You can use `micro -version` to get the commit hash.
+<!-- You can use `micro -version` to get the commit hash. -->
 
 Commit hash:
 OS:

.github/workflows/test.yaml

@@ -0,0 +1,22 @@
+on: [push, pull_request]
+name: Build and Test
+jobs:
+  test:
+    strategy:
+      matrix:
+        go-version: [1.19.x]
+        os: [ubuntu-latest, macos-latest, windows-latest]
+    runs-on: ${{ matrix.os }}
+    steps:
+    - uses: actions/setup-go@v3
+      with:
+        go-version: ${{ matrix.go-version }}
+    - uses: actions/checkout@v3
+
+    - name: Build
+      run: |
+        make build
+
+    - name: Test
+      run: |
+        make test

.gitignore

@@ -11,8 +11,9 @@ todo.txt
 test.txt
 log.txt
 *.old
+benchmark_results*
 tools/build-version
 tools/build-date
 tools/info-plist
-tools/bindata
+tools/vscode-tests/
 *.hdr

.gitmodules

@@ -1,3 +0,0 @@
-[submodule "tools/go-bindata"]
-	path = tools/go-bindata
-	url = https://github.com/zyedidia/go-bindata

.travis.yml

@@ -1,9 +0,0 @@
-language: go
-go:
-    - "1.11.x"
-os:
-    - linux
-    - osx
-script:
-    - env GO111MODULE=on make build
-    - env GO111MODULE=on make test

LICENSE

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2016-2017: Zachary Yedidia, et al.
+Copyright (c) 2016-2020: Zachary Yedidia, et al.
 
 Permission is hereby granted, free of charge, to any person obtaining
 a copy of this software and associated documentation files (the

LICENSE-THIRD-PARTY

@@ -1,4 +1,4 @@
-Third party libraries
+Third party libraries directly used by micro and their licenses
 ================
 
 github.com/golang/go/LICENSE
@@ -637,37 +637,6 @@ github.com/zyedidia/tcell/LICENSE (fork)
    limitations under the License.
 
 
-golang.org/x/net/LICENSE
-================
-
-Copyright (c) 2009 The Go Authors. All rights reserved.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are
-met:
-
-   * Redistributions of source code must retain the above copyright
-notice, this list of conditions and the following disclaimer.
-   * Redistributions in binary form must reproduce the above
-copyright notice, this list of conditions and the following disclaimer
-in the documentation and/or other materials provided with the
-distribution.
-   * Neither the name of Google Inc. nor the names of its
-contributors may be used to endorse or promote products derived from
-this software without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 golang.org/x/text/LICENSE
 ================
 
@@ -1079,6 +1048,8 @@ Exhibit B - "Incompatible With Secondary Licenses" Notice
 
 github.com/flynn/json5/LICENSE
 ================
+github.com/zyedidia/json5/LICENSE (fork)
+================
 
 Decoder code based on package encoding/json from the Go language.
 
@@ -1189,82 +1160,6 @@ OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
 OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-github.com/smartystreets/goconvey/LICENSE.md
-================
-
-Copyright (c) 2016 SmartyStreets, LLC
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.
-
-NOTE: Various optional and subordinate components carry their own licensing
-requirements and restrictions.  Use of those components is subject to the terms
-and conditions outlined the respective license of each component.
-
-github.com/smartystreets/assertions/LICENSE.md
-================
-
-Copyright (c) 2016 SmartyStreets, LLC
-
-Permission is hereby granted, free of charge, to any person obtaining a copy 
-of this software and associated documentation files (the "Software"), to deal 
-in the Software without restriction, including without limitation the rights 
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 
-copies of the Software, and to permit persons to whom the Software is 
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all 
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 
-SOFTWARE.
-
-NOTE: Various optional and subordinate components carry their own licensing
-requirements and restrictions.  Use of those components is subject to the terms
-and conditions outlined the respective license of each component.
-
-github.com/jtolds/gls/LICENSE
-================
-
-Copyright (c) 2013, Space Monkey, Inc.
-
-Permission is hereby granted, free of charge, to any person obtaining a copy of
-this software and associated documentation files (the "Software"), to deal in
-the Software without restriction, including without limitation the rights to
-use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
-the Software, and to permit persons to whom the Software is furnished to do so,
-subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
-FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
-COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
-IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
-CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
 github.com/npat-efault/poller/LICENSE.txt
 ================
 github.com/zyedidia/poller/LICENSE.txt (fork)
@@ -1362,10 +1257,35 @@ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
 
-github.com/lucasb-eyer/go-colorful/LICENSE
-================
+github.com/kballard/go-shellquote/LICENSE
+===============
 
-Copyright (c) 2013 Lucas Beyer
+Copyright (C) 2014 Kevin Ballard
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the "Software"),
+to deal in the Software without restriction, including without limitation
+the rights to use, copy, modify, merge, publish, distribute, sublicense,
+and/or sell copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
+OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+github.com/stretchr/testify
+=================
+
+MIT License
+
+Copyright (c) 2012-2018 Mat Ryer and Tyler Bunnell
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
@@ -1374,8 +1294,8 @@ to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 copies of the Software, and to permit persons to whom the Software is
 furnished to do so, subject to the following conditions:
 
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
 
 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

Makefile

@@ -1,4 +1,4 @@
-.PHONY: runtime
+.PHONY: runtime build generate build-quick
 
 VERSION = $(shell GOOS=$(shell go env GOHOSTOS) GOARCH=$(shell go env GOHOSTARCH) \
 	go run tools/build-version.go)
@@ -6,49 +6,66 @@ HASH = $(shell git rev-parse --short HEAD)
 DATE = $(shell GOOS=$(shell go env GOHOSTOS) GOARCH=$(shell go env GOHOSTARCH) \
 	go run tools/build-date.go)
 ADDITIONAL_GO_LINKER_FLAGS = $(shell GOOS=$(shell go env GOHOSTOS) \
-	GOARCH=$(shell go env GOHOSTARCH))
+	GOARCH=$(shell go env GOHOSTARCH) \
+	go run tools/info-plist.go "$(shell go env GOOS)" "$(VERSION)")
 GOBIN ?= $(shell go env GOPATH)/bin
-GOVARS = -X github.com/zyedidia/micro/internal/util.Version=$(VERSION) -X github.com/zyedidia/micro/internal/util.CommitHash=$(HASH) -X 'github.com/zyedidia/micro/internal/util.CompileDate=$(DATE)' -X github.com/zyedidia/micro/internal/util.Debug=OFF
+GOVARS = -X github.com/zyedidia/micro/v2/internal/util.Version=$(VERSION) -X github.com/zyedidia/micro/v2/internal/util.CommitHash=$(HASH) -X 'github.com/zyedidia/micro/v2/internal/util.CompileDate=$(DATE)'
+DEBUGVAR = -X github.com/zyedidia/micro/v2/internal/util.Debug=ON
+VSCODE_TESTS_BASE_URL = 'https://raw.githubusercontent.com/microsoft/vscode/e6a45f4242ebddb7aa9a229f85555e8a3bd987e2/src/vs/editor/test/common/model/'
 
-# Builds micro after checking dependencies but without updating the runtime
-build:
-	go build -mod=readonly -ldflags "-s -w $(GOVARS) $(ADDITIONAL_GO_LINKER_FLAGS)" ./cmd/micro
+build: generate build-quick
+
+build-quick:
+	go build -trimpath -ldflags "-s -w $(GOVARS) $(ADDITIONAL_GO_LINKER_FLAGS)" ./cmd/micro
 
 build-dbg:
-	go build -mod=readonly -ldflags "-s -w $(ADDITIONAL_GO_LINKER_FLAGS)" ./cmd/micro
+	go build -trimpath -ldflags "-s -w $(ADDITIONAL_GO_LINKER_FLAGS) $(DEBUGVAR)" ./cmd/micro
 
-build-mod:
-	go build -ldflags "-s -w $(ADDITIONAL_GO_LINKER_FLAGS)" ./cmd/micro
+build-tags: fetch-tags generate
+	go build -trimpath -ldflags "-s -w $(GOVARS) $(ADDITIONAL_GO_LINKER_FLAGS)" ./cmd/micro
 
-# Builds micro after building the runtime and checking dependencies
-build-all: runtime build
+build-all: build
 
-# Builds micro without checking for dependencies
-build-quick:
-	go build -mod=readonly -ldflags "-s -w $(GOVARS) $(ADDITIONAL_GO_LINKER_FLAGS)" ./cmd/micro
+install: generate
+	go install -ldflags "-s -w $(GOVARS) $(ADDITIONAL_GO_LINKER_FLAGS)" ./cmd/micro
 
-# Same as 'build' but installs to $GOBIN afterward
-install:
-	go install -mod=readonly -ldflags "-s -w $(GOVARS) $(ADDITIONAL_GO_LINKER_FLAGS)" ./cmd/micro
+install-all: install
 
-# Same as 'build-all' but installs to $GOBIN afterward
-install-all: runtime install
+fetch-tags:
+	git fetch --tags
 
-# Same as 'build-quick' but installs to $GOBIN afterward
-install-quick:
-	go install -mod=readonly -ldflags "-s -w $(GOVARS) $(ADDITIONAL_GO_LINKER_FLAGS)"  ./cmd/micro
+generate:
+	GOOS=$(shell go env GOHOSTOS) GOARCH=$(shell go env GOHOSTARCH) go generate ./runtime
 
-# Builds the runtime
-runtime:
-	git submodule update --init
-	go run runtime/syntax/make_headers.go runtime/syntax
-	go build -o tools/bindata ./tools/go-bindata
-	tools/bindata -pkg config -nomemcopy -nometadata -o runtime.go runtime/...
-	mv runtime.go internal/config
-	gofmt -w internal/config/runtime.go
+testgen:
+	mkdir -p tools/vscode-tests
+	cd tools/vscode-tests && \
+	curl --remote-name-all $(VSCODE_TESTS_BASE_URL){editableTextModelAuto,editableTextModel,model.line}.test.ts
+	tsc tools/vscode-tests/*.ts > /dev/null; true
+	go run tools/testgen.go tools/vscode-tests/*.js > buffer_generated_test.go
+	mv buffer_generated_test.go internal/buffer
+	gofmt -w internal/buffer/buffer_generated_test.go
 
 test:
 	go test ./internal/...
+	go test ./cmd/...
+
+bench:
+	for i in 1 2 3; do \
+		go test -bench=. ./internal/...; \
+	done > benchmark_results
+	benchstat benchmark_results
+
+bench-baseline:
+	for i in 1 2 3; do \
+		go test -bench=. ./internal/...; \
+	done > benchmark_results_baseline
+
+bench-compare:
+	for i in 1 2 3; do \
+		go test -bench=. ./internal/...; \
+	done > benchmark_results
+	benchstat -alpha 0.15 benchmark_results_baseline benchmark_results
 
 clean:
 	rm -f micro

README.md

@@ -1,102 +1,118 @@
-# ![Micro](./assets/logo.png)
+<img alt="micro logo" src="./assets/micro-logo-drop.svg" width="500px"/>
 
-[![Build Status](https://travis-ci.org/zyedidia/micro.svg?branch=master)](https://travis-ci.org/zyedidia/micro)
+![Test Workflow](https://github.com/zyedidia/micro/actions/workflows/test.yaml/badge.svg)
 [![Go Report Card](https://goreportcard.com/badge/github.com/zyedidia/micro)](https://goreportcard.com/report/github.com/zyedidia/micro)
-[![Join the chat at https://gitter.im/zyedidia/micro](https://badges.gitter.im/zyedidia/micro.svg)](https://gitter.im/zyedidia/micro?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
+[![Release](https://img.shields.io/github/release/zyedidia/micro.svg?label=Release)](https://github.com/zyedidia/micro/releases)
 [![MIT License](https://img.shields.io/badge/license-MIT-blue.svg)](https://github.com/zyedidia/micro/blob/master/LICENSE)
-[![Snap Status](https://build.snapcraft.io/badge/zyedidia/micro.svg)](https://build.snapcraft.io/user/zyedidia/micro)
+[![Join the chat at https://gitter.im/zyedidia/micro](https://badges.gitter.im/zyedidia/micro.svg)](https://gitter.im/zyedidia/micro?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
+[![Snap Status](https://snapcraft.io/micro/badge.svg)](https://snapcraft.io/micro)
 
-Micro is a terminal-based text editor that aims to be easy to use and intuitive, while also taking advantage of the full capabilities
-of modern terminals. It comes as one single, batteries-included, static binary with no dependencies, and you can download and use it right now.
+**micro** is a terminal-based text editor that aims to be easy to use and intuitive, while also taking advantage of the capabilities
+of modern terminals. It comes as a single, batteries-included, static binary with no dependencies; you can download and use it right now!
 
-As the name indicates, micro aims to be somewhat of a successor to the nano editor by being easy to install and use in a pinch, but micro also aims to be
-enjoyable to use full time, whether you work in the terminal because you prefer it (like me), or because you need to (over ssh).
+As its name indicates, micro aims to be somewhat of a successor to the nano editor by being easy to install and use.
+It strives to be enjoyable as a full-time editor for people who prefer to work in a terminal, or those who regularly edit files over SSH.
 
 Here is a picture of micro editing its source code.
 
 ![Screenshot](./assets/micro-solarized.png)
 
-To see more screenshots of micro, showcasing all of the default colorschemes, see [here](http://zbyedidia.webfactional.com/micro/screenshots.html).
+To see more screenshots of micro, showcasing some of the default color schemes, see [here](https://micro-editor.github.io).
  
 You can also check out the website for Micro at https://micro-editor.github.io.
 
-# Table of Contents
+## Table of Contents
+
 - [Features](#features)
 - [Installation](#installation)
-  - [Prebuilt binaries](#prebuilt-binaries)
+  - [Prebuilt binaries](#pre-built-binaries)
   - [Package Managers](#package-managers)
   - [Building from source](#building-from-source)
-  - [MacOS terminal](#macos-terminal)
+  - [Fully static binary](#fully-static-binary)
+  - [macOS terminal](#macos-terminal)
   - [Linux clipboard support](#linux-clipboard-support)
   - [Colors and syntax highlighting](#colors-and-syntax-highlighting)
-  - [Plan9, Cygwin](#plan9-cygwin)
+  - [Cygwin, Mingw, Plan9](#cygwin-mingw-plan9)
 - [Usage](#usage)
 - [Documentation and Help](#documentation-and-help)
 - [Contributing](#contributing)
 
 - - -
 
-# Features
+## Features
 
-* Easy to use and to install
-* No dependencies or external files are needed -- just the binary you can download further down the page
-* Multiple cursors
-* Common keybindings (ctrl-s, ctrl-c, ctrl-v, ctrl-z...)
-    * Keybindings can be rebound to your liking
-* Sane defaults
-    * You shouldn't have to configure much out of the box (and it is extremely easy to configure)
-* Splits and tabs
-* Nano-like menu to help you remember the keybindings
-* Extremely good mouse support
-    * This means mouse dragging to create a selection, double click to select by word, and triple click to select by line
-* Cross platform (It should work on all the platforms Go runs on)
-    * Note that while Windows is supported, there are still some bugs that need to be worked out
-* Plugin system (plugins are written in Lua)
-    * Micro has a built-in plugin manager to automatically install, remove, and update all your plugins
-* Persistent undo
-* Automatic linting and error notifications
-* Syntax highlighting (for over [90 languages](runtime/syntax)!)
-* Colorscheme support
-    * By default, micro comes with 16, 256, and true color themes.
-* True color support (set the `MICRO_TRUECOLOR` env variable to 1 to enable it)
-* Snippets
-    * The snippet plugin can be installed with `> plugin install snippets`
-* Copy and paste with the system clipboard
-* Small and simple
-* Easily configurable
-* Macros
-* Common editor things such as undo/redo, line numbers, Unicode support, softwrap...
+- Easy to use and install.
+- No dependencies or external files are needed — just the binary you can download further down the page.
+- Multiple cursors.
+- Common keybindings (<kbd>Ctrl-s</kbd>, <kbd>Ctrl-c</kbd>, <kbd>Ctrl-v</kbd>, <kbd>Ctrl-z</kbd>, …).
+  - Keybindings can be rebound to your liking.
+- Sane defaults.
+  - You shouldn't have to configure much out of the box (and it is extremely easy to configure).
+- Splits and tabs.
+- nano-like menu to help you remember the keybindings.
+- Extremely good mouse support.
+  - This means mouse dragging to create a selection, double click to select by word, and triple click to select by line.
+- Cross-platform (it should work on all the platforms Go runs on).
+  - Note that while Windows is supported Mingw/Cygwin is not (see below).
+- Plugin system (plugins are written in Lua).
+  - micro has a built-in plugin manager to automatically install, remove, and update plugins.
+- Built-in diff gutter.
+- Simple autocompletion.
+- Persistent undo.
+- Automatic linting and error notifications.
+- Syntax highlighting for over [130 languages](runtime/syntax).
+- Color scheme support.
+  - By default, micro comes with 16, 256, and true color themes.
+- True color support (set the `MICRO_TRUECOLOR` environment variable to 1 to enable it).
+- Copy and paste with the system clipboard.
+- Small and simple.
+- Easily configurable.
+- Macros.
+- Common editor features such as undo/redo, line numbers, Unicode support, soft wrapping, …
 
-Although not yet implemented, I hope to add more features such as autocompletion ([#174](https://github.com/zyedidia/micro/issues/174)) or a tree view ([#249](https://github.com/zyedidia/micro/issues/249)) in the future.
-
-# Installation
+## Installation
 
 To install micro, you can download a [prebuilt binary](https://github.com/zyedidia/micro/releases), or you can build it from source.
 
 If you want more information about ways to install micro, see this [wiki page](https://github.com/zyedidia/micro/wiki/Installing-Micro).
 
-### Prebuilt binaries
+Use `micro -version` to get the version information after installing. It is only guaranteed that you are installing the most recent
+stable version if you install from the prebuilt binaries, Homebrew, or Snap.
 
-All you need to install micro is one file, the binary itself. It's as simple as that!
+A desktop entry file and man page can be found in the [assets/packaging](https://github.com/zyedidia/micro/tree/master/assets/packaging) directory.
 
-Download the binary from the [releases](https://github.com/zyedidia/micro/releases) page.
+### Pre-built binaries
 
-On that page you'll see the nightly release, which contains binaries for micro which are built every night,
-and you'll see all the stable releases with the corresponding binaries.
+Pre-built binaries are distributed with [releases](https://github.com/zyedidia/micro/releases).
 
-If you'd like to see more information after installing micro, run `micro -version`.
+To uninstall micro, simply remove the binary, and the configuration directory at `~/.config/micro`.
 
-### Installation script
+#### Quick-install script
 
-There is a great script which can install micro for you by downloading the latest prebuilt binary. You can find it at https://getmic.ro (the github repo for it is [here](https://github.com/benweissmann/getmic.ro)).
+```bash
+curl https://getmic.ro | bash
+```
 
-Then you can easily install micro:
+The script will place the micro binary in the current directory. From there, you can move it to a directory on your path of your choosing (e.g. `sudo mv micro /usr/bin`). See its [GitHub repository](https://github.com/benweissmann/getmic.ro) for more information.
 
-    $ curl https://getmic.ro | bash
+#### Eget
 
-The script will install the micro binary to the current directory.
+With [Eget](https://github.com/zyedidia/eget) installed, you can easily get a pre-built binary:
 
-See the [Github page](https://github.com/benweissmann/getmic.ro) for more information.
+```
+eget zyedidia/micro
+```
+
+Use `--tag VERSION` to download a specific tagged version.
+
+```
+eget --tag nightly zyedidia/micro # download the nightly version (compiled every day at midnight UTC)
+eget --tag v2.0.8 zyedidia/micro  # download version 2.0.8 rather than the latest release
+```
+
+You can install `micro` by adding `--to /usr/local/bin` to the `eget` command, or move the binary manually to a directory on your `$PATH` after the download completes.
+
+See [Eget](https://github.com/zyedidia/eget) for more information.
 
 ### Package managers
 
@@ -106,17 +122,9 @@ You can install micro using Homebrew on Mac:
 brew install micro
 ```
 
-On Windows, you can install micro through [Chocolatey](https://chocolatey.org/) or [Scoop](https://github.com/lukesampson/scoop):
-
-```
-choco install micro
-```
-
-or
-
-```
-scoop install micro
-```
+**Note for Mac:** All micro keybindings use the control or alt (option) key, not the command
+key. By default, macOS terminals do not forward alt key events. To fix this, please see
+the section on [macOS terminals](https://github.com/zyedidia/micro#macos-terminal) further below.
 
 On Linux, you can install micro through [snap](https://snapcraft.io/docs/core/install)
 
@@ -124,74 +132,124 @@ On Linux, you can install micro through [snap](https://snapcraft.io/docs/core/in
 snap install micro --classic
 ```
 
-On OpenBSD, micro is available in the ports tree. It is also available as a binary package.
+Micro is also available through other package managers on Linux such dnf, AUR, Nix, and package managers
+for other operating systems. These packages are not guaranteed to be up-to-date.
 
-```
-pkg_add -v micro
-```
+<!-- * `apt install micro` (Ubuntu 20.04 `focal`, and Debian `unstable | testing | buster-backports`). At the moment, this package (2.0.1-1) is outdated and has a known bug where debug mode is enabled. -->
+
+* Linux: Available in distro-specific package managers.
+    * `dnf install micro` (Fedora).
+    * `apt install micro` (Ubuntu and Debian).
+    * `pacman -S micro` (Arch Linux).
+    * `emerge app-editors/micro` (Gentoo).
+    * `zypper install micro-editor` (SUSE)
+    * `eopkg install micro` (Solus).
+    * `pacstall -I micro` (Pacstall).
+    * See [wiki](https://github.com/zyedidia/micro/wiki/Installing-Micro) for details about CRUX, Termux.
+* Windows: [Chocolatey](https://chocolatey.org) and [Scoop](https://github.com/lukesampson/scoop).
+    * `choco install micro`.
+    * `scoop install micro`.
+* OpenBSD: Available in the ports tree and also available as a binary package.
+    * `pkd_add -v micro`.
+* NetBSD, macOS, Linux, Illumos, etc. with [pkgsrc](http://www.pkgsrc.org/)-current:
+    * `pkg_add micro`
+* macOS with [MacPorts](https://www.macports.org):
+    * `sudo port install micro`
+
+**Note for Linux desktop environments:**
+
+For interfacing with the local system clipboard, the following tools need to be installed:
+* For X11 `xclip` or `xsel`
+* For [Wayland](https://wayland.freedesktop.org/) `wl-clipboard`
+
+Without these tools installed, micro will use an internal clipboard for copy and paste, but it won't be accessible to external applications.
 
 ### Building from source
 
 If your operating system does not have a binary release, but does run Go, you can build from source.
 
-Make sure that you have Go version 1.5 or greater (Go 1.4 will work if your version supports CGO) and that your `GOPATH` env variable is set (I recommend setting it to `~/go` if you don't have one).
+Make sure that you have Go version 1.16 or greater and Go modules are enabled.
 
 ```
-go get -d github.com/zyedidia/micro/cmd/micro
-cd $GOPATH/src/github.com/zyedidia/micro
-make install
+git clone https://github.com/zyedidia/micro
+cd micro
+make build
+sudo mv micro /usr/local/bin # optional
 ```
 
-The binary will then be installed to `$GOPATH/bin` (or your `$GOBIN`).
+The binary will be placed in the current directory and can be moved to
+anywhere you like (for example `/usr/local/bin`).
 
-Please make sure that when you are working with micro's code, you are working on your `GOPATH`.
+The command `make install` will install the binary to `$GOPATH/bin` or `$GOBIN`.
 
-You can install directly with `go get` (`go get -u github.com/zyedidia/micro/cmd/micro`) but this isn't recommended because it doesn't build micro with version information which is useful for the plugin manager.
+You can install directly with `go get` (`go get github.com/zyedidia/micro/cmd/micro`) but this isn't
+recommended because it doesn't build micro with version information (necessary for the plugin manager),
+and doesn't disable debug mode.
 
-### MacOS terminal
+### Fully static binary
 
-If you are using MacOS, you should consider using [iTerm2](http://iterm2.com/) instead of the default Mac terminal. The iTerm2 terminal has much better mouse support as well as better handling of key events. For best keybinding behavior, choose `xterm defaults` under `Preferences->Profiles->Keys->Load Preset`. The newest versions also support true color.
+By default, the micro binary will dynamically link with core system libraries (this is generally
+recommended for security and portability). However, there is a fully static prebuilt binary that
+is provided for amd64 as `linux-static.tar.gz`, and to build a fully static binary from source, run
 
-### Linux clipboard support
-
-On Linux, clipboard support requires the 'xclip' or 'xsel' commands to be installed.
-
-For Ubuntu:
-
-```sh
-sudo apt-get install xclip
+```
+CGO_ENABLED=0 make build
 ```
 
-If you don't have xclip or xsel, micro will use an internal clipboard for copy and paste, but it won't work with external applications.
+### macOS terminal
+
+If you are using macOS, you should consider using [iTerm2](http://iterm2.com/) instead of the default terminal (Terminal.app). The iTerm2 terminal has much better mouse support as well as better handling of key events. For best keybinding behavior, choose `xterm defaults` under `Preferences->Profiles->Keys->Presets...`, and select `Esc+` for `Left Option Key` in the same menu. The newest versions also support true color.
+
+If you still insist on using the default Mac terminal, be sure to set `Use Option key as Meta key` under
+`Preferences->Profiles->Keyboard` to use <kbd>option</kbd> as <kbd>alt</kbd>.
+
+### WSL and Windows Console
+
+If you use micro within WSL, it is highly recommended that you use the [Windows
+Terminal](https://apps.microsoft.com/store/detail/windows-terminal/9N0DX20HK701?hl=en-us&gl=us)
+instead of the default Windows Console.
+
+If you must use Windows Console for some reason, note that there is a bug in
+Windows Console WSL that causes a font change whenever micro tries to access
+the external clipboard via powershell. To fix this, use an internal clipboard
+with `set clipboard internal` (though your system clipboard will no longer be
+available in micro).
 
 ### Colors and syntax highlighting
 
 If you open micro and it doesn't seem like syntax highlighting is working, this is probably because
-you are using a terminal which does not support 256 color. Try changing the colorscheme to `simple`
-by pressing CtrlE in micro and typing `set colorscheme simple`.
+you are using a terminal which does not support 256 color mode. Try changing the color scheme to `simple`
+by pressing <kbd>Ctrl-e</kbd> in micro and typing `set colorscheme simple`.
 
 If you are using the default Ubuntu terminal, to enable 256 make sure your `TERM` variable is set
 to `xterm-256color`.
 
 Many of the Windows terminals don't support more than 16 colors, which means
-that micro's default colorscheme won't look very good. You can either set
-the colorscheme to `simple`, or download a better terminal emulator, like
-mintty.
+that micro's default color scheme won't look very good. You can either set
+the color scheme to `simple`, or download and configure a better terminal emulator
+than the Windows default.
 
-### Plan9, Cygwin
+### Cygwin, Mingw, Plan9
 
-Please note that micro uses the amazing [tcell library](https://github.com/gdamore/tcell), but this
+Cygwin, Mingw, and Plan9 are unfortunately not officially supported. In Cygwin and Mingw, micro will often work when run using
+the `winpty` utility:
+
+```
+winpty micro.exe ...
+```
+
+Micro uses the amazing [tcell library](https://github.com/gdamore/tcell), but this
 means that micro is restricted to the platforms tcell supports. As a result, micro does not support
-Plan9, and Cygwin (although this may change in the future). Micro also doesn't support NaCl (but NaCl is deprecated anyways).
+Plan9, and Cygwin (although this may change in the future). Micro also doesn't support NaCl (which is deprecated anyway).
 
-# Usage
+## Usage
 
-Once you have built the editor, simply start it by running `micro path/to/file.txt` or simply `micro` to open an empty buffer.
+Once you have built the editor, start it by running `micro path/to/file.txt` or `micro` to open an empty buffer.
 
-Micro also supports creating buffers from `stdin`:
+micro also supports creating buffers from `stdin`:
 
 ```sh
-ifconfig | micro
+ip a | micro
 ```
 
 You can move the cursor around with the arrow keys and mouse.
@@ -200,26 +258,30 @@ You can also use the mouse to manipulate the text. Simply clicking and dragging
 will select text. You can also double click to enable word selection, and triple
 click to enable line selection.
 
-# Documentation and Help
+## Documentation and Help
 
-Micro has a built-in help system which you can access by pressing `Ctrl-E` and typing `help`. Additionally, you can
+micro has a built-in help system which you can access by pressing <kbd>Ctrl-e</kbd> and typing `help`. Additionally, you can
 view the help files here:
 
-* [main help](https://github.com/zyedidia/micro/tree/master/runtime/help/help.md)
-* [keybindings](https://github.com/zyedidia/micro/tree/master/runtime/help/keybindings.md)
-* [commands](https://github.com/zyedidia/micro/tree/master/runtime/help/commands.md)
-* [colors](https://github.com/zyedidia/micro/tree/master/runtime/help/colors.md)
-* [options](https://github.com/zyedidia/micro/tree/master/runtime/help/options.md)
-* [plugins](https://github.com/zyedidia/micro/tree/master/runtime/help/plugins.md)
+- [main help](https://github.com/zyedidia/micro/tree/master/runtime/help/help.md)
+- [keybindings](https://github.com/zyedidia/micro/tree/master/runtime/help/keybindings.md)
+- [commands](https://github.com/zyedidia/micro/tree/master/runtime/help/commands.md)
+- [colors](https://github.com/zyedidia/micro/tree/master/runtime/help/colors.md)
+- [options](https://github.com/zyedidia/micro/tree/master/runtime/help/options.md)
+- [plugins](https://github.com/zyedidia/micro/tree/master/runtime/help/plugins.md)
 
 I also recommend reading the [tutorial](https://github.com/zyedidia/micro/tree/master/runtime/help/tutorial.md) for
 a brief introduction to the more powerful configuration features micro offers.
 
-# Contributing
+There is also an unofficial Discord, which you can join at https://discord.gg/nhWR6armnR.
+
+## Contributing
 
 If you find any bugs, please report them! I am also happy to accept pull requests from anyone.
 
 You can use the [GitHub issue tracker](https://github.com/zyedidia/micro/issues)
 to report bugs, ask questions, or suggest new features.
 
-For a more informal setting to discuss the editor, you can join the [Gitter chat](https://gitter.im/zyedidia/micro).
+For a more informal setting to discuss the editor, you can join the [Gitter chat](https://gitter.im/zyedidia/micro) or the [Discord](https://discord.gg/nhWR6armnR). You can also use the [Discussions](https://github.com/zyedidia/micro/discussions) section on Github for a forum-like setting or for Q&A.
+
+Sometimes I am unresponsive, and I apologize! If that happens, please ping me.

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+     id="path15"
+     inkscape:connector-curvature="0"
+     style="fill:#2e3192" /><path
+     style="fill:#ffffff;stroke-width:0.0600759"
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+     id="path240" /></svg>

assets/packaging/deb/micro.postinst

@@ -0,0 +1,9 @@
+#!/bin/sh
+
+set -e
+
+if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ]; then
+    update-alternatives --install /usr/bin/editor editor /usr/bin/micro 40 \
+      --slave /usr/share/man/man1/editor.1 editor.1 \
+      /usr/share/man/man1/micro.1
+fi

assets/packaging/deb/micro.prerm

@@ -0,0 +1,7 @@
+#!/bin/sh
+
+set -e
+
+if [ "$1" != "upgrade" ]; then
+    update-alternatives --remove editor /usr/bin/micro
+fi

assets/packaging/micro.1

@@ -1,11 +1,4 @@
-.\" micro manual page - micro(1)
-.\" 
-.\" Copyright © 2017 Zachary Yedidia <zyedidia@gmail.com>
-.\" Copyright © 2017 Collin Warren <anatoly@somethinghub.com>
-.\"
-.\" This document is provided under the same licensing as micro.
-.\" See \usr\share\doc\micro\LICENSE for more information.
-.TH micro 1 "2017-03-28"
+.TH micro 1 "2020-02-10"
 .SH NAME
 micro \- A modern and intuitive terminal-based text editor
 .SH SYNOPSIS
@@ -21,40 +14,99 @@ of modern terminals. It comes as one single, batteries-included, static binary w
 As the name indicates, micro aims to be somewhat of a successor to the nano editor by being easy to install and use in a pinch, but micro also aims to be
 enjoyable to use full time, whether you work in the terminal because you prefer it (like me), or because you need to (over ssh).
 
+Use Ctrl-q to quit, Ctrl-s to save, and Ctrl-g to open the in-editor help menu.
+
 .SH OPTIONS
+.PP
+\-clean
+.RS 4
+Cleans the configuration directory
+.RE
+
 .PP
 \-config-dir dir
 .RS 4
 Specify a custom location for the configuration directory
 .RE
+
 .PP
-\-startpos LINE,COL
+[FILE]:LINE:COL
 .RS 4
 Specify a line and column to start the cursor at when opening a buffer
 .RE
+
 .PP
 \-options
 .RS 4
 Show all option help
 .RE
+
+.PP
+\-debug
+.RS 4
+Enable debug mode (enables logging to ./log.txt)
+.RE
+
 .PP
 \-version
 .RS 4
 Show the version number and information
 .RE
 
+Micro's plugins can be managed at the command line with the following commands.
+.RS 4
+
+.PP
+\-plugin remove [PLUGIN]...
+.RS 4
+Remove plugin(s)
+.RE
+
+.PP
+\-plugin update [PLUGIN]...
+.RS 4
+Update plugin(s) (if no argument is given, updates all plugins)
+.RE
+
+.PP
+\-plugin search [PLUGIN]...
+.RS 4
+Search for a plugin
+.RE
+
+.PP
+\-plugin list
+.RS 4
+List installed plugins
+.RE
+
+.PP
+\-plugin available
+.RS 4
+List available plugins
+.RE
+.RE
+
+Micro's options can also be set via command line arguments for quick
+adjustments. For real configuration, please use the settings.json
+file (see 'help options').
+.RS 4
+
+.PP
+\-option value
+.RS 4
+Set `option` to `value` for this session
+For example: `micro -syntax off file.c`
+.RE
+
+
 .SH CONFIGURATION
 
-Micro uses
-\fI$XDG_CONFIG_HOME/micro\fR
-for configuration by default. If it is not set, micro uses ~/.config/micro.
-Two main configuration files are settings.json, containing the user's
-settings, and bindings.json, containing the user's custom keybindings.
-
-.SH ENVIRONMENT
-Micro's behaviour can be changed by setting environment variables, of which there is currently only one:
-\fIMICRO_TRUECOLOR\fR.
-When MICRO_TRUECOLOR is set to 1, micro will attempt to treat your terminal as a true-color terminal and will be able to make full use of the true-color colorschemes that are included with micro. If MICRO_TRUECOLOR is not set or is set to 0, then micro will only make use of 256 color features and will internally map true-color colorschemes to the nearest colors available. For more information see micro's documentation.
+Micro uses $MICRO_CONFIG_HOME as the configuration directory.
+If this environment variable is not set, it uses $XDG_CONFIG_HOME/micro instead.
+If that environment variable is not set, it uses ~/.config/micro as the configuration directory.
+In the documentation, we use ~/.config/micro to refer to the configuration directory
+(even if it may in fact be somewhere else if you have set either of the above environment variables).
 
 .SH NOTICE
 This manpage is intended only to serve as a quick guide to the invocation of 
@@ -69,5 +121,5 @@ and to report any newly encountered bugs you may find. We strive to correct
 bugs as swiftly as possible.
 
 .SH COPYRIGHT
-Copyright \(co 2017 Zachary Yedidia, Collin Warren, et al.
-See /usr/share/doc/micro/LICENSE and /usr/share/doc/micro/AUTHORS for more information.
+Copyright \(co 2020 Zachary Yedidia, et al. MIT license.
+See \fBhttps://github.com/zyedidia/micro\fP for details.

assets/packaging/micro.desktop

@@ -6,10 +6,11 @@ Comment=Edit text files in a terminal
 
 Icon=micro
 Type=Application
-Categories=terminal;TextEditor;
+Categories=Utility;TextEditor;Development;
 Keywords=text;editor;syntax;terminal;
 
-Exec=micro %U
+Exec=micro %F
 StartupNotify=false
 Terminal=true
+NoDisplay=true
 MimeType=text/plain;text/x-chdr;text/x-csrc;text/x-c++hdr;text/x-c++src;text/x-java;text/x-dsrc;text/x-pascal;text/x-perl;text/x-python;application/x-php;application/x-httpd-php3;application/x-httpd-php4;application/x-httpd-php5;application/xml;text/html;text/css;text/x-sql;text/x-diff;

cmd/micro/clean.go

@@ -0,0 +1,148 @@
+package main
+
+import (
+	"bufio"
+	"encoding/gob"
+	"fmt"
+	"io/ioutil"
+	"os"
+	"path/filepath"
+	"sort"
+	"strings"
+
+	"github.com/zyedidia/micro/v2/internal/buffer"
+	"github.com/zyedidia/micro/v2/internal/config"
+)
+
+func shouldContinue() bool {
+	reader := bufio.NewReader(os.Stdin)
+	fmt.Print("Continue [Y/n]: ")
+	text, err := reader.ReadString('\n')
+	if err != nil {
+		fmt.Println(err)
+		return false
+	}
+
+	text = strings.TrimRight(text, "\r\n")
+
+	return len(text) == 0 || strings.ToLower(text)[0] == 'y'
+}
+
+// CleanConfig performs cleanup in the user's configuration directory
+func CleanConfig() {
+	fmt.Println("Cleaning your configuration directory at", config.ConfigDir)
+	fmt.Printf("Please consider backing up %s before continuing\n", config.ConfigDir)
+
+	if !shouldContinue() {
+		fmt.Println("Stopping early")
+		return
+	}
+
+	fmt.Println("Cleaning default settings")
+	config.WriteSettings(filepath.Join(config.ConfigDir, "settings.json"))
+
+	// detect unused options
+	var unusedOptions []string
+	defaultSettings := config.DefaultAllSettings()
+	for k := range config.GlobalSettings {
+		if _, ok := defaultSettings[k]; !ok {
+			valid := false
+			for _, p := range config.Plugins {
+				if strings.HasPrefix(k, p.Name+".") || k == p.Name {
+					valid = true
+				}
+			}
+			if !valid {
+				unusedOptions = append(unusedOptions, k)
+			}
+		}
+	}
+
+	if len(unusedOptions) > 0 {
+		fmt.Println("The following options are unused:")
+
+		sort.Strings(unusedOptions)
+
+		for _, s := range unusedOptions {
+			fmt.Printf("%s (value: %v)\n", s, config.GlobalSettings[s])
+		}
+
+		fmt.Printf("These options will be removed from %s\n", filepath.Join(config.ConfigDir, "settings.json"))
+
+		if shouldContinue() {
+			for _, s := range unusedOptions {
+				delete(config.GlobalSettings, s)
+			}
+
+			err := config.OverwriteSettings(filepath.Join(config.ConfigDir, "settings.json"))
+			if err != nil {
+				fmt.Println("Error writing settings.json file: " + err.Error())
+			}
+
+			fmt.Println("Removed unused options")
+			fmt.Print("\n\n")
+		}
+	}
+
+	// detect incorrectly formatted buffer/ files
+	files, err := ioutil.ReadDir(filepath.Join(config.ConfigDir, "buffers"))
+	if err == nil {
+		var badFiles []string
+		var buffer buffer.SerializedBuffer
+		for _, f := range files {
+			fname := filepath.Join(config.ConfigDir, "buffers", f.Name())
+			file, e := os.Open(fname)
+
+			if e == nil {
+				decoder := gob.NewDecoder(file)
+				err = decoder.Decode(&buffer)
+
+				if err != nil && f.Name() != "history" {
+					badFiles = append(badFiles, fname)
+				}
+				file.Close()
+			}
+		}
+
+		if len(badFiles) > 0 {
+			fmt.Printf("Detected %d files with an invalid format in %s\n", len(badFiles), filepath.Join(config.ConfigDir, "buffers"))
+			fmt.Println("These files store cursor and undo history.")
+			fmt.Printf("Removing badly formatted files in %s\n", filepath.Join(config.ConfigDir, "buffers"))
+
+			if shouldContinue() {
+				removed := 0
+				for _, f := range badFiles {
+					err := os.Remove(f)
+					if err != nil {
+						fmt.Println(err)
+						continue
+					}
+					removed++
+				}
+
+				if removed == 0 {
+					fmt.Println("Failed to remove files")
+				} else {
+					fmt.Printf("Removed %d badly formatted files\n", removed)
+				}
+				fmt.Print("\n\n")
+			}
+		}
+	}
+
+	// detect plugins/ directory
+	plugins := filepath.Join(config.ConfigDir, "plugins")
+	if stat, err := os.Stat(plugins); err == nil && stat.IsDir() {
+		fmt.Printf("Found directory %s\n", plugins)
+		fmt.Printf("Plugins should now be stored in %s\n", filepath.Join(config.ConfigDir, "plug"))
+		fmt.Printf("Removing %s\n", plugins)
+
+		if shouldContinue() {
+			os.RemoveAll(plugins)
+		}
+
+		fmt.Print("\n\n")
+	}
+
+	fmt.Println("Done cleaning")
+}

cmd/micro/debug.go

@@ -4,7 +4,7 @@ import (
 	"log"
 	"os"
 
-	"github.com/zyedidia/micro/internal/util"
+	"github.com/zyedidia/micro/v2/internal/util"
 )
 
 // NullWriter simply sends writes into the void

cmd/micro/initlua.go

@@ -6,14 +6,14 @@ import (
 	lua "github.com/yuin/gopher-lua"
 	luar "layeh.com/gopher-luar"
 
-	"github.com/zyedidia/micro/internal/action"
-	"github.com/zyedidia/micro/internal/buffer"
-	"github.com/zyedidia/micro/internal/config"
-	"github.com/zyedidia/micro/internal/display"
-	ulua "github.com/zyedidia/micro/internal/lua"
-	"github.com/zyedidia/micro/internal/screen"
-	"github.com/zyedidia/micro/internal/shell"
-	"github.com/zyedidia/micro/internal/util"
+	"github.com/zyedidia/micro/v2/internal/action"
+	"github.com/zyedidia/micro/v2/internal/buffer"
+	"github.com/zyedidia/micro/v2/internal/config"
+	"github.com/zyedidia/micro/v2/internal/display"
+	ulua "github.com/zyedidia/micro/v2/internal/lua"
+	"github.com/zyedidia/micro/v2/internal/screen"
+	"github.com/zyedidia/micro/v2/internal/shell"
+	"github.com/zyedidia/micro/v2/internal/util"
 )
 
 func init() {
@@ -21,6 +21,7 @@ func init() {
 	ulua.L.SetGlobal("import", luar.New(ulua.L, LuaImport))
 }
 
+// LuaImport is meant to be called from lua by a plugin and will import the given micro package
 func LuaImport(pkg string) *lua.LTable {
 	switch pkg {
 	case "micro":
@@ -46,6 +47,14 @@ func luaImportMicro() *lua.LTable {
 	ulua.L.SetField(pkg, "InfoBar", luar.New(ulua.L, action.GetInfoBar))
 	ulua.L.SetField(pkg, "Log", luar.New(ulua.L, log.Println))
 	ulua.L.SetField(pkg, "SetStatusInfoFn", luar.New(ulua.L, display.SetStatusInfoFnLua))
+	ulua.L.SetField(pkg, "CurPane", luar.New(ulua.L, func() action.Pane {
+		return action.MainTab().CurPane()
+	}))
+	ulua.L.SetField(pkg, "CurTab", luar.New(ulua.L, action.MainTab))
+	ulua.L.SetField(pkg, "Tabs", luar.New(ulua.L, func() *action.TabList {
+		return action.Tabs
+	}))
+	ulua.L.SetField(pkg, "Lock", luar.New(ulua.L, ulua.Lock))
 
 	return pkg
 }
@@ -53,7 +62,7 @@ func luaImportMicro() *lua.LTable {
 func luaImportMicroConfig() *lua.LTable {
 	pkg := ulua.L.NewTable()
 
-	ulua.L.SetField(pkg, "MakeCommand", luar.New(ulua.L, action.LuaMakeCommand))
+	ulua.L.SetField(pkg, "MakeCommand", luar.New(ulua.L, action.MakeCommand))
 	ulua.L.SetField(pkg, "FileComplete", luar.New(ulua.L, buffer.FileComplete))
 	ulua.L.SetField(pkg, "HelpComplete", luar.New(ulua.L, action.HelpComplete))
 	ulua.L.SetField(pkg, "OptionComplete", luar.New(ulua.L, action.OptionComplete))
@@ -62,19 +71,21 @@ func luaImportMicroConfig() *lua.LTable {
 	ulua.L.SetField(pkg, "TryBindKey", luar.New(ulua.L, action.TryBindKey))
 	ulua.L.SetField(pkg, "Reload", luar.New(ulua.L, action.ReloadConfig))
 	ulua.L.SetField(pkg, "AddRuntimeFileFromMemory", luar.New(ulua.L, config.PluginAddRuntimeFileFromMemory))
-	ulua.L.SetField(pkg, "AddRuntimeFilesFromDirectory", luar.New(ulua.L, config.PluginAddRuntimeFileFromMemory))
+	ulua.L.SetField(pkg, "AddRuntimeFilesFromDirectory", luar.New(ulua.L, config.PluginAddRuntimeFilesFromDirectory))
 	ulua.L.SetField(pkg, "AddRuntimeFile", luar.New(ulua.L, config.PluginAddRuntimeFile))
 	ulua.L.SetField(pkg, "ListRuntimeFiles", luar.New(ulua.L, config.PluginListRuntimeFiles))
 	ulua.L.SetField(pkg, "ReadRuntimeFile", luar.New(ulua.L, config.PluginReadRuntimeFile))
+	ulua.L.SetField(pkg, "NewRTFiletype", luar.New(ulua.L, config.NewRTFiletype))
 	ulua.L.SetField(pkg, "RTColorscheme", luar.New(ulua.L, config.RTColorscheme))
 	ulua.L.SetField(pkg, "RTSyntax", luar.New(ulua.L, config.RTSyntax))
 	ulua.L.SetField(pkg, "RTHelp", luar.New(ulua.L, config.RTHelp))
 	ulua.L.SetField(pkg, "RTPlugin", luar.New(ulua.L, config.RTPlugin))
-	ulua.L.SetField(pkg, "RegisterCommonOption", luar.New(ulua.L, config.RegisterCommonOption))
-	ulua.L.SetField(pkg, "RegisterGlobalOption", luar.New(ulua.L, config.RegisterGlobalOption))
+	ulua.L.SetField(pkg, "RegisterCommonOption", luar.New(ulua.L, config.RegisterCommonOptionPlug))
+	ulua.L.SetField(pkg, "RegisterGlobalOption", luar.New(ulua.L, config.RegisterGlobalOptionPlug))
 	ulua.L.SetField(pkg, "GetGlobalOption", luar.New(ulua.L, config.GetGlobalOption))
 	ulua.L.SetField(pkg, "SetGlobalOption", luar.New(ulua.L, action.SetGlobalOption))
 	ulua.L.SetField(pkg, "SetGlobalOptionNative", luar.New(ulua.L, action.SetGlobalOptionNative))
+	ulua.L.SetField(pkg, "ConfigDir", luar.New(ulua.L, config.ConfigDir))
 
 	return pkg
 }
@@ -107,16 +118,24 @@ func luaImportMicroBuffer() *lua.LTable {
 	ulua.L.SetField(pkg, "Loc", luar.New(ulua.L, func(x, y int) buffer.Loc {
 		return buffer.Loc{x, y}
 	}))
+	ulua.L.SetField(pkg, "SLoc", luar.New(ulua.L, func(line, row int) display.SLoc {
+		return display.SLoc{line, row}
+	}))
 	ulua.L.SetField(pkg, "BTDefault", luar.New(ulua.L, buffer.BTDefault.Kind))
 	ulua.L.SetField(pkg, "BTHelp", luar.New(ulua.L, buffer.BTHelp.Kind))
 	ulua.L.SetField(pkg, "BTLog", luar.New(ulua.L, buffer.BTLog.Kind))
 	ulua.L.SetField(pkg, "BTScratch", luar.New(ulua.L, buffer.BTScratch.Kind))
 	ulua.L.SetField(pkg, "BTRaw", luar.New(ulua.L, buffer.BTRaw.Kind))
 	ulua.L.SetField(pkg, "BTInfo", luar.New(ulua.L, buffer.BTInfo.Kind))
+	ulua.L.SetField(pkg, "NewBuffer", luar.New(ulua.L, func(text, path string) *buffer.Buffer {
+		return buffer.NewBufferFromString(text, path, buffer.BTDefault)
+	}))
 	ulua.L.SetField(pkg, "NewBufferFromFile", luar.New(ulua.L, func(path string) (*buffer.Buffer, error) {
 		return buffer.NewBufferFromFile(path, buffer.BTDefault)
 	}))
 	ulua.L.SetField(pkg, "ByteOffset", luar.New(ulua.L, buffer.ByteOffset))
+	ulua.L.SetField(pkg, "Log", luar.New(ulua.L, buffer.WriteLog))
+	ulua.L.SetField(pkg, "LogBuf", luar.New(ulua.L, buffer.GetLogBuf))
 
 	return pkg
 }
@@ -127,6 +146,15 @@ func luaImportMicroUtil() *lua.LTable {
 	ulua.L.SetField(pkg, "RuneAt", luar.New(ulua.L, util.LuaRuneAt))
 	ulua.L.SetField(pkg, "GetLeadingWhitespace", luar.New(ulua.L, util.LuaGetLeadingWhitespace))
 	ulua.L.SetField(pkg, "IsWordChar", luar.New(ulua.L, util.LuaIsWordChar))
+	ulua.L.SetField(pkg, "String", luar.New(ulua.L, util.String))
+	ulua.L.SetField(pkg, "Unzip", luar.New(ulua.L, util.Unzip))
+	ulua.L.SetField(pkg, "Version", luar.New(ulua.L, util.Version))
+	ulua.L.SetField(pkg, "SemVersion", luar.New(ulua.L, util.SemVersion))
+	ulua.L.SetField(pkg, "HttpRequest", luar.New(ulua.L, util.HttpRequest))
+	ulua.L.SetField(pkg, "CharacterCountInString", luar.New(ulua.L, util.CharacterCountInString))
+	ulua.L.SetField(pkg, "RuneStr", luar.New(ulua.L, func(r rune) string {
+		return string(r)
+	}))
 
 	return pkg
 }

cmd/micro/micro.go

@@ -3,46 +3,85 @@ package main
 import (
 	"flag"
 	"fmt"
+	"io"
 	"io/ioutil"
+	"log"
 	"os"
+	"os/signal"
+	"regexp"
+	"runtime"
+	"runtime/pprof"
 	"sort"
+	"strconv"
+	"syscall"
+	"time"
 
 	"github.com/go-errors/errors"
 	isatty "github.com/mattn/go-isatty"
-	"github.com/zyedidia/micro/internal/action"
-	"github.com/zyedidia/micro/internal/buffer"
-	"github.com/zyedidia/micro/internal/config"
-	"github.com/zyedidia/micro/internal/screen"
-	"github.com/zyedidia/micro/internal/shell"
-	"github.com/zyedidia/micro/internal/util"
-	"github.com/zyedidia/tcell"
+	lua "github.com/yuin/gopher-lua"
+	"github.com/zyedidia/micro/v2/internal/action"
+	"github.com/zyedidia/micro/v2/internal/buffer"
+	"github.com/zyedidia/micro/v2/internal/clipboard"
+	"github.com/zyedidia/micro/v2/internal/config"
+	ulua "github.com/zyedidia/micro/v2/internal/lua"
+	"github.com/zyedidia/micro/v2/internal/screen"
+	"github.com/zyedidia/micro/v2/internal/shell"
+	"github.com/zyedidia/micro/v2/internal/util"
+	"github.com/zyedidia/tcell/v2"
 )
 
 var (
 	// Event channel
-	events   chan tcell.Event
 	autosave chan bool
 
 	// Command line flags
 	flagVersion   = flag.Bool("version", false, "Show the version number and information")
 	flagConfigDir = flag.String("config-dir", "", "Specify a custom location for the configuration directory")
 	flagOptions   = flag.Bool("options", false, "Show all option help")
+	flagDebug     = flag.Bool("debug", false, "Enable debug mode (prints debug info to ./log.txt)")
+	flagProfile   = flag.Bool("profile", false, "Enable CPU profiling (writes profile info to ./micro.prof)")
+	flagPlugin    = flag.String("plugin", "", "Plugin command")
+	flagClean     = flag.Bool("clean", false, "Clean configuration directory")
 	optionFlags   map[string]*string
+
+	sigterm chan os.Signal
+	sighup  chan os.Signal
 )
 
 func InitFlags() {
 	flag.Usage = func() {
 		fmt.Println("Usage: micro [OPTIONS] [FILE]...")
+		fmt.Println("-clean")
+		fmt.Println("    \tCleans the configuration directory")
 		fmt.Println("-config-dir dir")
 		fmt.Println("    \tSpecify a custom location for the configuration directory")
-		fmt.Println("[FILE]:LINE:COL")
+		fmt.Println("[FILE]:LINE:COL (if the `parsecursor` option is enabled)")
+		fmt.Println("+LINE:COL")
 		fmt.Println("    \tSpecify a line and column to start the cursor at when opening a buffer")
-		fmt.Println("    \tThis can also be done by opening file:LINE:COL")
 		fmt.Println("-options")
 		fmt.Println("    \tShow all option help")
+		fmt.Println("-debug")
+		fmt.Println("    \tEnable debug mode (enables logging to ./log.txt)")
+		fmt.Println("-profile")
+		fmt.Println("    \tEnable CPU profiling (writes profile info to ./micro.prof")
+		fmt.Println("    \tso it can be analyzed later with \"go tool pprof micro.prof\")")
 		fmt.Println("-version")
 		fmt.Println("    \tShow the version number and information")
 
+		fmt.Print("\nMicro's plugin's can be managed at the command line with the following commands.\n")
+		fmt.Println("-plugin install [PLUGIN]...")
+		fmt.Println("    \tInstall plugin(s)")
+		fmt.Println("-plugin remove [PLUGIN]...")
+		fmt.Println("    \tRemove plugin(s)")
+		fmt.Println("-plugin update [PLUGIN]...")
+		fmt.Println("    \tUpdate plugin(s) (if no argument is given, updates all plugins)")
+		fmt.Println("-plugin search [PLUGIN]...")
+		fmt.Println("    \tSearch for a plugin")
+		fmt.Println("-plugin list")
+		fmt.Println("    \tList installed plugins")
+		fmt.Println("-plugin available")
+		fmt.Println("    \tList available plugins")
+
 		fmt.Print("\nMicro's options can also be set via command line arguments for quick\nadjustments. For real configuration, please use the settings.json\nfile (see 'help options').\n\n")
 		fmt.Println("-option value")
 		fmt.Println("    \tSet `option` to `value` for this session")
@@ -81,11 +120,32 @@ func InitFlags() {
 		}
 		os.Exit(0)
 	}
+
+	if util.Debug == "OFF" && *flagDebug {
+		util.Debug = "ON"
+	}
+}
+
+// DoPluginFlags parses and executes any flags that require LoadAllPlugins (-plugin and -clean)
+func DoPluginFlags() {
+	if *flagClean || *flagPlugin != "" {
+		config.LoadAllPlugins()
+
+		if *flagPlugin != "" {
+			args := flag.Args()
+
+			config.PluginCommand(os.Stdout, *flagPlugin, args)
+		} else if *flagClean {
+			CleanConfig()
+		}
+
+		os.Exit(0)
+	}
 }
 
 // LoadInput determines which files should be loaded into buffers
 // based on the input stored in flag.Args()
-func LoadInput() []*buffer.Buffer {
+func LoadInput(args []string) []*buffer.Buffer {
 	// There are a number of ways micro should start given its input
 
 	// 1. If it is given a files in flag.Args(), it should open those
@@ -100,14 +160,47 @@ func LoadInput() []*buffer.Buffer {
 	var filename string
 	var input []byte
 	var err error
-	args := flag.Args()
 	buffers := make([]*buffer.Buffer, 0, len(args))
 
-	if len(args) > 0 {
+	btype := buffer.BTDefault
+	if !isatty.IsTerminal(os.Stdout.Fd()) {
+		btype = buffer.BTStdout
+	}
+
+	files := make([]string, 0, len(args))
+	flagStartPos := buffer.Loc{-1, -1}
+	flagr := regexp.MustCompile(`^\+(\d+)(?::(\d+))?$`)
+	for _, a := range args {
+		match := flagr.FindStringSubmatch(a)
+		if len(match) == 3 && match[2] != "" {
+			line, err := strconv.Atoi(match[1])
+			if err != nil {
+				screen.TermMessage(err)
+				continue
+			}
+			col, err := strconv.Atoi(match[2])
+			if err != nil {
+				screen.TermMessage(err)
+				continue
+			}
+			flagStartPos = buffer.Loc{col - 1, line - 1}
+		} else if len(match) == 3 && match[2] == "" {
+			line, err := strconv.Atoi(match[1])
+			if err != nil {
+				screen.TermMessage(err)
+				continue
+			}
+			flagStartPos = buffer.Loc{0, line - 1}
+		} else {
+			files = append(files, a)
+		}
+	}
+
+	if len(files) > 0 {
 		// Option 1
 		// We go through each file and load it
-		for i := 0; i < len(args); i++ {
-			buf, err := buffer.NewBufferFromFile(args[i], buffer.BTDefault)
+		for i := 0; i < len(files); i++ {
+			buf, err := buffer.NewBufferFromFileAtLoc(files[i], btype, flagStartPos)
 			if err != nil {
 				screen.TermMessage(err)
 				continue
@@ -124,29 +217,40 @@ func LoadInput() []*buffer.Buffer {
 			screen.TermMessage("Error reading from stdin: ", err)
 			input = []byte{}
 		}
-		buffers = append(buffers, buffer.NewBufferFromString(string(input), filename, buffer.BTDefault))
+		buffers = append(buffers, buffer.NewBufferFromStringAtLoc(string(input), filename, btype, flagStartPos))
 	} else {
 		// Option 3, just open an empty buffer
-		buffers = append(buffers, buffer.NewBufferFromString(string(input), filename, buffer.BTDefault))
+		buffers = append(buffers, buffer.NewBufferFromStringAtLoc(string(input), filename, btype, flagStartPos))
 	}
 
 	return buffers
 }
 
 func main() {
-	defer os.Exit(0)
-
-	// runtime.SetCPUProfileRate(400)
-	// f, _ := os.Create("micro.prof")
-	// pprof.StartCPUProfile(f)
-	// defer pprof.StopCPUProfile()
+	defer func() {
+		if util.Stdout.Len() > 0 {
+			fmt.Fprint(os.Stdout, util.Stdout.String())
+		}
+		os.Exit(0)
+	}()
 
 	var err error
 
-	InitLog()
-
 	InitFlags()
 
+	if *flagProfile {
+		f, err := os.Create("micro.prof")
+		if err != nil {
+			log.Fatal("error creating CPU profile: ", err)
+		}
+		if err := pprof.StartCPUProfile(f); err != nil {
+			log.Fatal("error starting CPU profile: ", err)
+		}
+		defer pprof.StopCPUProfile()
+	}
+
+	InitLog()
+
 	err = config.InitConfigDir(*flagConfigDir)
 	if err != nil {
 		screen.TermMessage(err)
@@ -157,7 +261,10 @@ func main() {
 	if err != nil {
 		screen.TermMessage(err)
 	}
-	config.InitGlobalSettings()
+	err = config.InitGlobalSettings()
+	if err != nil {
+		screen.TermMessage(err)
+	}
 
 	// flag options
 	for k, v := range optionFlags {
@@ -171,7 +278,39 @@ func main() {
 		}
 	}
 
-	screen.Init()
+	DoPluginFlags()
+
+	err = screen.Init()
+	if err != nil {
+		fmt.Println(err)
+		fmt.Println("Fatal: Micro could not initialize a Screen.")
+		os.Exit(1)
+	}
+	m := clipboard.SetMethod(config.GetGlobalOption("clipboard").(string))
+	clipErr := clipboard.Initialize(m)
+
+	defer func() {
+		if err := recover(); err != nil {
+			if screen.Screen != nil {
+				screen.Screen.Fini()
+			}
+			if e, ok := err.(*lua.ApiError); ok {
+				fmt.Println("Lua API error:", e)
+			} else {
+				fmt.Println("Micro encountered an error:", errors.Wrap(err, 2).ErrorStack(), "\nIf you can reproduce this error, please report it at https://github.com/zyedidia/micro/issues")
+			}
+			// backup all open buffers
+			for _, b := range buffer.OpenBuffers {
+				b.Backup()
+			}
+			os.Exit(1)
+		}
+	}()
+
+	err = config.LoadAllPlugins()
+	if err != nil {
+		screen.TermMessage(err)
+	}
 
 	action.InitBindings()
 	action.InitCommands()
@@ -181,37 +320,49 @@ func main() {
 		screen.TermMessage(err)
 	}
 
-	err = config.LoadAllPlugins()
+	err = config.RunPluginFn("preinit")
 	if err != nil {
 		screen.TermMessage(err)
 	}
+
+	action.InitGlobals()
+	buffer.SetMessager(action.InfoBar)
+	args := flag.Args()
+	b := LoadInput(args)
+
+	if len(b) == 0 {
+		// No buffers to open
+		screen.Screen.Fini()
+		runtime.Goexit()
+	}
+
+	action.InitTabs(b)
+
 	err = config.RunPluginFn("init")
 	if err != nil {
 		screen.TermMessage(err)
 	}
 
-	// If we have an error, we can exit cleanly and not completely
-	// mess up the terminal being worked in
-	// In other words we need to shut down tcell before the program crashes
-	defer func() {
-		if err := recover(); err != nil {
-			screen.Screen.Fini()
-			fmt.Println("Micro encountered an error:", err)
-			// backup all open buffers
-			for _, b := range buffer.OpenBuffers {
-				b.Backup(false)
-			}
-			// Print the stack trace too
-			fmt.Print(errors.Wrap(err, 2).ErrorStack())
-			os.Exit(1)
-		}
-	}()
+	err = config.RunPluginFn("postinit")
+	if err != nil {
+		screen.TermMessage(err)
+	}
 
-	b := LoadInput()
-	action.InitTabs(b)
-	action.InitGlobals()
+	if clipErr != nil {
+		log.Println(clipErr, " or change 'clipboard' option")
+	}
 
-	events = make(chan tcell.Event)
+	if a := config.GetGlobalOption("autosave").(float64); a > 0 {
+		config.SetAutoTime(int(a))
+		config.StartAutoSave()
+	}
+
+	screen.Events = make(chan tcell.Event)
+
+	sigterm = make(chan os.Signal, 1)
+	sighup = make(chan os.Signal, 1)
+	signal.Notify(sigterm, syscall.SIGTERM, syscall.SIGINT, syscall.SIGQUIT)
+	signal.Notify(sighup, syscall.SIGHUP)
 
 	// Here is the event loop which runs in a separate thread
 	go func() {
@@ -220,43 +371,110 @@ func main() {
 			e := screen.Screen.PollEvent()
 			screen.Unlock()
 			if e != nil {
-				events <- e
+				screen.Events <- e
 			}
 		}
 	}()
 
+	// clear the drawchan so we don't redraw excessively
+	// if someone requested a redraw before we started displaying
+	for len(screen.DrawChan()) > 0 {
+		<-screen.DrawChan()
+	}
+
+	// wait for initial resize event
+	select {
+	case event := <-screen.Events:
+		action.Tabs.HandleEvent(event)
+	case <-time.After(10 * time.Millisecond):
+		// time out after 10ms
+	}
+
 	for {
-		// Display everything
-		screen.Screen.Fill(' ', config.DefStyle)
-		screen.Screen.HideCursor()
-		action.Tabs.Display()
-		for _, ep := range action.MainTab().Panes {
-			ep.Display()
-		}
-		action.MainTab().Display()
-		action.InfoBar.Display()
-		screen.Screen.Show()
-
-		var event tcell.Event
-
-		// Check for new events
-		select {
-		case f := <-shell.Jobs:
-			// If a new job has finished while running in the background we should execute the callback
-			f.Function(f.Output, f.Args...)
-		case <-config.Autosave:
-			for _, b := range buffer.OpenBuffers {
-				b.Save()
-			}
-		case <-shell.CloseTerms:
-		case event = <-events:
-		case <-screen.DrawChan:
-		}
-
-		if action.InfoBar.HasPrompt {
-			action.InfoBar.HandleEvent(event)
-		} else {
-			action.Tabs.HandleEvent(event)
-		}
+		DoEvent()
 	}
 }
+
+// DoEvent runs the main action loop of the editor
+func DoEvent() {
+	var event tcell.Event
+
+	// Display everything
+	screen.Screen.Fill(' ', config.DefStyle)
+	screen.Screen.HideCursor()
+	action.Tabs.Display()
+	for _, ep := range action.MainTab().Panes {
+		ep.Display()
+	}
+	action.MainTab().Display()
+	action.InfoBar.Display()
+	screen.Screen.Show()
+
+	// Check for new events
+	select {
+	case f := <-shell.Jobs:
+		// If a new job has finished while running in the background we should execute the callback
+		ulua.Lock.Lock()
+		f.Function(f.Output, f.Args)
+		ulua.Lock.Unlock()
+	case <-config.Autosave:
+		ulua.Lock.Lock()
+		for _, b := range buffer.OpenBuffers {
+			b.Save()
+		}
+		ulua.Lock.Unlock()
+	case <-shell.CloseTerms:
+	case event = <-screen.Events:
+	case <-screen.DrawChan():
+		for len(screen.DrawChan()) > 0 {
+			<-screen.DrawChan()
+		}
+	case <-sighup:
+		for _, b := range buffer.OpenBuffers {
+			if !b.Modified() {
+				b.Fini()
+			}
+		}
+		os.Exit(0)
+	case <-sigterm:
+		for _, b := range buffer.OpenBuffers {
+			if !b.Modified() {
+				b.Fini()
+			}
+		}
+
+		if screen.Screen != nil {
+			screen.Screen.Fini()
+		}
+		os.Exit(0)
+	}
+
+	if e, ok := event.(*tcell.EventError); ok {
+		log.Println("tcell event error: ", e.Error())
+
+		if e.Err() == io.EOF {
+			// shutdown due to terminal closing/becoming inaccessible
+			for _, b := range buffer.OpenBuffers {
+				if !b.Modified() {
+					b.Fini()
+				}
+			}
+
+			if screen.Screen != nil {
+				screen.Screen.Fini()
+			}
+			os.Exit(0)
+		}
+		return
+	}
+
+	ulua.Lock.Lock()
+	// if event != nil {
+	if action.InfoBar.HasPrompt {
+		action.InfoBar.HandleEvent(event)
+	} else {
+		action.Tabs.HandleEvent(event)
+	}
+	// }
+	ulua.Lock.Unlock()
+}

cmd/micro/micro_test.go

@@ -0,0 +1,339 @@
+package main
+
+import (
+	"fmt"
+	"io/ioutil"
+	"log"
+	"os"
+	"testing"
+
+	"github.com/go-errors/errors"
+	"github.com/stretchr/testify/assert"
+	"github.com/zyedidia/micro/v2/internal/action"
+	"github.com/zyedidia/micro/v2/internal/buffer"
+	"github.com/zyedidia/micro/v2/internal/config"
+	"github.com/zyedidia/micro/v2/internal/screen"
+	"github.com/zyedidia/tcell/v2"
+)
+
+var tempDir string
+var sim tcell.SimulationScreen
+
+func init() {
+	screen.Events = make(chan tcell.Event, 8)
+}
+
+func startup(args []string) (tcell.SimulationScreen, error) {
+	var err error
+
+	tempDir, err = ioutil.TempDir("", "micro_test")
+	if err != nil {
+		return nil, err
+	}
+	err = config.InitConfigDir(tempDir)
+	if err != nil {
+		return nil, err
+	}
+
+	config.InitRuntimeFiles()
+	err = config.ReadSettings()
+	if err != nil {
+		return nil, err
+	}
+	err = config.InitGlobalSettings()
+	if err != nil {
+		return nil, err
+	}
+
+	s, err := screen.InitSimScreen()
+	if err != nil {
+		return nil, err
+	}
+
+	defer func() {
+		if err := recover(); err != nil {
+			screen.Screen.Fini()
+			fmt.Println("Micro encountered an error:", err)
+			// backup all open buffers
+			for _, b := range buffer.OpenBuffers {
+				b.Backup()
+			}
+			// Print the stack trace too
+			log.Fatalf(errors.Wrap(err, 2).ErrorStack())
+		}
+	}()
+
+	err = config.LoadAllPlugins()
+	if err != nil {
+		screen.TermMessage(err)
+	}
+
+	action.InitBindings()
+	action.InitCommands()
+
+	err = config.InitColorscheme()
+	if err != nil {
+		return nil, err
+	}
+
+	b := LoadInput(args)
+
+	if len(b) == 0 {
+		return nil, errors.New("No buffers opened")
+	}
+
+	action.InitTabs(b)
+	action.InitGlobals()
+
+	err = config.RunPluginFn("init")
+	if err != nil {
+		return nil, err
+	}
+
+	s.InjectResize()
+	handleEvent()
+
+	return s, nil
+}
+
+func cleanup() {
+	os.RemoveAll(tempDir)
+}
+
+func handleEvent() {
+	screen.Lock()
+	e := screen.Screen.PollEvent()
+	screen.Unlock()
+	if e != nil {
+		screen.Events <- e
+	}
+	DoEvent()
+}
+
+func injectKey(key tcell.Key, r rune, mod tcell.ModMask) {
+	sim.InjectKey(key, r, mod)
+	handleEvent()
+}
+
+func injectMouse(x, y int, buttons tcell.ButtonMask, mod tcell.ModMask) {
+	sim.InjectMouse(x, y, buttons, mod)
+	handleEvent()
+}
+
+func injectString(str string) {
+	// the tcell simulation screen event channel can only handle
+	// 10 events at once, so we need to divide up the key events
+	// into chunks of 10 and handle the 10 events before sending
+	// another chunk of events
+	iters := len(str) / 10
+	extra := len(str) % 10
+
+	for i := 0; i < iters; i++ {
+		s := i * 10
+		e := i*10 + 10
+		sim.InjectKeyBytes([]byte(str[s:e]))
+		for i := 0; i < 10; i++ {
+			handleEvent()
+		}
+	}
+
+	sim.InjectKeyBytes([]byte(str[len(str)-extra:]))
+	for i := 0; i < extra; i++ {
+		handleEvent()
+	}
+}
+
+func openFile(file string) {
+	injectKey(tcell.KeyCtrlE, rune(tcell.KeyCtrlE), tcell.ModCtrl)
+	injectString(fmt.Sprintf("open %s", file))
+	injectKey(tcell.KeyEnter, rune(tcell.KeyEnter), tcell.ModNone)
+}
+
+func createTestFile(name string, content string) (string, error) {
+	testf, err := ioutil.TempFile("", name)
+	if err != nil {
+		return "", err
+	}
+
+	if _, err := testf.Write([]byte(content)); err != nil {
+		return "", err
+	}
+	if err := testf.Close(); err != nil {
+		return "", err
+	}
+
+	return testf.Name(), nil
+}
+
+func TestMain(m *testing.M) {
+	var err error
+	sim, err = startup([]string{})
+	if err != nil {
+		log.Fatalln(err)
+	}
+
+	retval := m.Run()
+	cleanup()
+
+	os.Exit(retval)
+}
+
+func TestSimpleEdit(t *testing.T) {
+	file, err := createTestFile("micro_simple_edit_test", "base content")
+	if err != nil {
+		t.Error(err)
+		return
+	}
+	defer os.Remove(file)
+
+	openFile(file)
+
+	var buf *buffer.Buffer
+	for _, b := range buffer.OpenBuffers {
+		if b.Path == file {
+			buf = b
+		}
+	}
+
+	if buf == nil {
+		t.Errorf("Could not find buffer %s", file)
+		return
+	}
+
+	injectKey(tcell.KeyEnter, rune(tcell.KeyEnter), tcell.ModNone)
+	injectKey(tcell.KeyUp, 0, tcell.ModNone)
+	injectString("first line")
+
+	// test both kinds of backspace
+	for i := 0; i < len("ne"); i++ {
+		injectKey(tcell.KeyBackspace, rune(tcell.KeyBackspace), tcell.ModNone)
+	}
+	for i := 0; i < len(" li"); i++ {
+		injectKey(tcell.KeyBackspace2, rune(tcell.KeyBackspace2), tcell.ModNone)
+	}
+	injectString("foobar")
+
+	injectKey(tcell.KeyCtrlS, rune(tcell.KeyCtrlS), tcell.ModCtrl)
+
+	data, err := ioutil.ReadFile(file)
+	if err != nil {
+		t.Error(err)
+		return
+	}
+
+	assert.Equal(t, "firstfoobar\nbase content\n", string(data))
+}
+
+func TestMouse(t *testing.T) {
+	file, err := createTestFile("micro_mouse_test", "base content")
+	if err != nil {
+		t.Error(err)
+		return
+	}
+	defer os.Remove(file)
+
+	openFile(file)
+
+	// buffer:
+	// base content
+	// the selections need to happen at different locations to avoid a double click
+	injectMouse(3, 0, tcell.Button1, tcell.ModNone)
+	injectKey(tcell.KeyLeft, 0, tcell.ModNone)
+	injectMouse(0, 0, tcell.ButtonNone, tcell.ModNone)
+	injectString("secondline")
+	// buffer:
+	// secondlinebase content
+	injectKey(tcell.KeyEnter, rune(tcell.KeyEnter), tcell.ModNone)
+	// buffer:
+	// secondline
+	// base content
+	injectMouse(2, 0, tcell.Button1, tcell.ModNone)
+	injectMouse(0, 0, tcell.ButtonNone, tcell.ModNone)
+	injectKey(tcell.KeyEnter, rune(tcell.KeyEnter), tcell.ModNone)
+	// buffer:
+	//
+	// secondline
+	// base content
+	injectKey(tcell.KeyUp, 0, tcell.ModNone)
+	injectString("firstline")
+	// buffer:
+	// firstline
+	// secondline
+	// base content
+	injectKey(tcell.KeyCtrlS, rune(tcell.KeyCtrlS), tcell.ModCtrl)
+
+	data, err := ioutil.ReadFile(file)
+	if err != nil {
+		t.Error(err)
+		return
+	}
+
+	assert.Equal(t, "firstline\nsecondline\nbase content\n", string(data))
+}
+
+var srTestStart = `foo
+foo
+foofoofoo
+Ernleȝe foo æðelen
+`
+var srTest2 = `test_string
+test_string
+test_stringtest_stringtest_string
+Ernleȝe test_string æðelen
+`
+var srTest3 = `test_foo
+test_string
+test_footest_stringtest_foo
+Ernleȝe test_string æðelen
+`
+
+func TestSearchAndReplace(t *testing.T) {
+	file, err := createTestFile("micro_search_replace_test", srTestStart)
+	if err != nil {
+		t.Error(err)
+		return
+	}
+	defer os.Remove(file)
+
+	openFile(file)
+
+	injectKey(tcell.KeyCtrlE, rune(tcell.KeyCtrlE), tcell.ModCtrl)
+	injectString(fmt.Sprintf("replaceall %s %s", "foo", "test_string"))
+	injectKey(tcell.KeyEnter, rune(tcell.KeyEnter), tcell.ModNone)
+
+	injectKey(tcell.KeyCtrlS, rune(tcell.KeyCtrlS), tcell.ModCtrl)
+
+	data, err := ioutil.ReadFile(file)
+	if err != nil {
+		t.Error(err)
+		return
+	}
+
+	assert.Equal(t, srTest2, string(data))
+
+	injectKey(tcell.KeyCtrlE, rune(tcell.KeyCtrlE), tcell.ModCtrl)
+	injectString(fmt.Sprintf("replace %s %s", "string", "foo"))
+	injectKey(tcell.KeyEnter, rune(tcell.KeyEnter), tcell.ModNone)
+	injectString("ynyny")
+	injectKey(tcell.KeyEscape, 0, tcell.ModNone)
+
+	injectKey(tcell.KeyCtrlS, rune(tcell.KeyCtrlS), tcell.ModCtrl)
+
+	data, err = ioutil.ReadFile(file)
+	if err != nil {
+		t.Error(err)
+		return
+	}
+
+	assert.Equal(t, srTest3, string(data))
+}
+
+func TestMultiCursor(t *testing.T) {
+	// TODO
+}
+
+func TestSettingsPersistence(t *testing.T) {
+	// TODO
+}
+
+// more tests (rendering, tabs, plugins)?

data/com.github.zyedidia.micro.metainfo.xml

@@ -1,23 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<component>
-	<id>com.github.zyedidia.micro</id>
-	<name>Micro Text Editor</name>
-	<summary>A modern and intuitive terminal-based text editor</summary>
-	<metadata_license>MIT</metadata_license>
-	<categories>
-		<category>Development</category>
-		<category>TextEditor</category>
-	</categories>
-	<provides>
-	​	<binary>micro</binary>
-	​</provides>
-	​<developer_name>Zachary Yedidia</developer_name>
-	<screenshots>
-	​	<screenshot type="default">
-	​		<caption>Micro Text Editor editing its source code.</caption>
-	​		<image type="source">https://raw.githubusercontent.com/zyedidia/micro/master/assets/micro-solarized.png</image>
-	​	</screenshot>
-	​</screenshots>
-	<url type="homepage">https://micro-editor.github.io</url>
-	<url type="bugtracker">https://github.com/zyedidia/micro/issues</url>
-​</component>

data/io.github.zyedidia.micro.metainfo.xml

@@ -0,0 +1,44 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<component type="desktop-application">
+	<id>io.github.zyedidia.micro</id>
+	<launchable type="desktop-id">micro.desktop</launchable>
+	<name>Micro Text Editor</name>
+	<summary>A modern and intuitive terminal-based text editor</summary>
+	<description>
+		<p>
+				Amicro is a terminal-based text editor that aims to be easy to use and
+				intuitive, while also taking advantage of the capabilities of modern terminals.
+				It comes as a single, batteries-included, static binary with no dependencies;
+				you can download and use it right now!
+		</p>
+		<p>
+			As its name indicates, micro aims to be somewhat of a successor to the nano
+			editor by being easy to install and use. It strives to be enjoyable as a full-
+			time editor for people who prefer to work in a terminal, or those who regularly
+			edit files over SSH.
+		</p>
+	</description>
+	<metadata_license>MIT</metadata_license>
+	<project_license>MIT</project_license>
+	<categories>
+		<category>Development</category>
+		<category>TextEditor</category>
+	</categories>
+	<releases>
+			<release version="2.0.11" date="2022-08-01"/>
+	</releases>
+	<provides>
+		<binary>micro</binary>
+		<id>com.github.zyedidia.micro</id>
+	</provides>
+	<developer_name>Zachary Yedidia</developer_name>
+	<screenshots>
+		<screenshot type="default">
+			<caption>Micro Text Editor editing its source code</caption>
+			<image type="source">https://raw.githubusercontent.com/zyedidia/micro/master/assets/micro-solarized.png</image>
+		</screenshot>
+	</screenshots>
+	<content_rating type="oars-1.1" />
+	<url type="homepage">https://micro-editor.github.io</url>
+	<url type="bugtracker">https://github.com/zyedidia/micro/issues</url>
+</component>

data/micro.json

@@ -0,0 +1,358 @@
+{
+    "$comment": "https://github.com/zyedidia/micro",
+    "$schema": "http://json-schema.org/draft-07/schema#",
+    "title": "options",
+    "description": "A micro editor config schema",
+    "type": "object",
+    "properties": {
+        "autoindent": {
+            "description": "Whether to use the same indentation as a previous line\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "boolean",
+            "default": true
+        },
+        "autosave": {
+            "description": "A delay between automatic saves\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "integer",
+            "minimum": 0,
+            "default": 0
+        },
+        "autosu": {
+            "description": "Whether attempt to use super user privileges\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "boolean",
+            "default": false
+        },
+        "backup": {
+            "description": "Whether to backup all open buffers\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "boolean",
+            "default": true
+        },
+        "backupdir": {
+            "description": "A directory to store backups\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "string",
+            "default": ""
+        },
+        "basename": {
+            "description": "Whether to show a basename instead of a full path\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "boolean",
+            "default": false
+        },
+        "clipboard": {
+            "description": "A way to access the system clipboard\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "string",
+            "enum": [
+                "external",
+                "terminal",
+                "internal"
+            ],
+            "default": "external"
+        },
+        "colorcolumn": {
+            "description": "A position to display a column\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "integer",
+            "minimum": 0,
+            "default": 0
+        },
+        "colorscheme": {
+            "description": "A color scheme\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "string",
+            "enum": [
+                "atom-dark",
+                "bubblegum",
+                "cmc-16",
+                "cmc-tc",
+                "darcula",
+                "default",
+                "dracula-tc",
+                "dukedark-tc",
+                "dukelight-tc",
+                "dukeubuntu-tc",
+                "geany",
+                "gotham",
+                "gruvbox",
+                "gruvbox-tc",
+                "material-tc",
+                "monokai-dark",
+                "monokai",
+                "one-dark",
+                "railscast",
+                "simple",
+                "solarized",
+                "solarized-tc",
+                "sunny-day",
+                "twilight",
+                "zenburn"
+            ],
+            "default": "default"
+        },
+        "cursorline": {
+            "description": "Whether to highlight a line with a cursor with a different color\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "boolean",
+            "default": true
+        },
+        "diffgutter": {
+            "description": "Whether to display diff inticators before lines\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "boolean",
+            "default": false
+        },
+        "divchars": {
+            "description": "Divider chars for vertical and horizontal splits\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "string",
+            "default": "|-"
+        },
+        "divreverse": {
+            "description": "Whether to use inversed color scheme colors for splits\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "boolean",
+            "default": true
+        },
+        "encoding": {
+            "description": "An encoding used to open and save files\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "string",
+            "default": "utf-8"
+        },
+        "eofnewline": {
+            "description": "Whether to add a missing trailing new line\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "boolean",
+            "default": true
+        },
+        "fastdirty": {
+            "description": "Whether to use a fast algorithm to determine whether a file is changed\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "boolean",
+            "default": false
+        },
+        "fileformat": {
+            "description": "A line ending format\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "string",
+            "enum": [
+                "unix",
+                "dos"
+            ],
+            "default": "unix"
+        },
+        "filetype": {
+            "description": "A filetype for the current buffer\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "string",
+            "default": "unknown"
+        },
+        "hlsearch": {
+            "description": "Whether to highlight all instances of a searched text after a successful search\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "boolean",
+            "default": false
+        },
+        "incsearch": {
+            "description": "Whether to enable an incremental search in `Find` prompt\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "boolean",
+            "default": true
+        },
+        "ignorecase": {
+            "description": "Whether to perform case-insensitive searches\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "boolean",
+            "default": true
+        },
+        "indentchar": {
+            "description": "An indentation character\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "string",
+            "maxLength": 1,
+            "default": " "
+        },
+        "infobar": {
+            "description": "Whether to enable a line at the bottom where messages are printed\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "boolean",
+            "default": true
+        },
+        "keepautoindent": {
+            "description": "Whether add a whitespace while using autoindent\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "boolean",
+            "default": false
+        },
+        "keymenu": {
+            "description": "Whether to display nano-style key menu at the bottom\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "boolean",
+            "default": false
+        },
+        "matchbrace": {
+            "description": "Whether to underline matching braces\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "boolean",
+            "default": true
+        },
+        "mkparents": {
+            "description": "Whether to create missing directories\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "boolean",
+            "default": false
+        },
+        "mouse": {
+            "description": "Whether to enable mouse support\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "boolean",
+            "default": true
+        },
+        "paste": {
+            "description": "Whether to treat characters sent from the terminal in a single chunk as a paste event\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "boolean",
+            "default": false
+        },
+        "parsecursor": {
+            "description": "Whether to extract a line number and a column to open files with from file names\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "boolean",
+            "default": false
+        },
+        "permbackup": {
+            "description": "Whether to permanently save backups\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "boolean",
+            "default": false
+        },
+        "pluginchannels": {
+            "description": "A file with list of plugin channels\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "string",
+            "default": "https://raw.githubusercontent.com/micro-editor/plugin-channel/master/channel.json"
+        },
+        "pluginrepos": {
+            "description": "Plugin repositories\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "array",
+            "uniqueItems": true,
+            "items": {
+                "description": "A pluging repository\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+                "type": "string"
+            },
+            "default": []
+        },
+        "readonly": {
+            "description": "Whether to forbid buffer editing\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "boolean",
+            "default": false
+        },
+        "rmtrailingws": {
+            "description": "Whether to remove trailing whitespaces\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "boolean",
+            "default": false
+        },
+        "ruler": {
+            "description": "Whether to display line numbers\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "boolean",
+            "default": true
+        },
+        "relativeruler": {
+            "description": "Whether to display relative line numbers\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "boolean",
+            "default": false
+        },
+        "savecursor": {
+            "description": "Whether to save cursor position in files\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "boolean",
+            "default": false
+        },
+        "savehistory": {
+            "description": "Whether to save command history between closing and re-opening editor\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "boolean",
+            "default": true
+        },
+        "saveundo": {
+            "description": "Whether to save undo after closing file\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "boolean",
+            "default": false
+        },
+        "scrollbar": {
+            "description": "Whether to save undo after closing file\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "boolean",
+            "default": false
+        },
+        "scrollmargin": {
+            "description": "A margin at which a view starts scrolling when a cursor approaches an edge of a view\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "integer",
+            "default": 3
+        },
+        "scrollspeed": {
+            "description": "Line count to scroll for one scroll event\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "integer",
+            "default": 2
+        },
+        "smartpaste": {
+            "description": "Whether to add a leading whitespace while pasting multiple lines\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "boolean",
+            "default": true
+        },
+        "softwrap": {
+            "description": "Whether to wrap long lines\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "boolean",
+            "default": false
+        },
+        "splitbottom": {
+            "description": "Whether to create a new horizontal split below the current one\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "boolean",
+            "default": true
+        },
+        "splitright": {
+            "description": "Whether to create a new vertical split right of the current one\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "boolean",
+            "default": true
+        },
+        "statusformatl": {
+            "description": "Format string of left-justified part of the statusline\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "string",
+            "default": "$(filename) $(modified)($(line),$(col)) $(status.paste)| ft:$(opt:filetype) | $(opt:fileformat) | $(opt:encoding)"
+        },
+        "statusformatr": {
+            "description": "Format string of right-justified part of the statusline\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "string",
+            "default": "$(bind:ToggleKeyMenu): bindings, $(bind:ToggleHelp): help"
+        },
+        "statusline": {
+            "description": "Whether to display a status line\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "string",
+            "default": "sudo"
+        },
+        "sucmd": {
+            "description": "A super user command\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "string",
+            "default": "sudo",
+            "examples": [
+                "sudo",
+                "doas"
+            ]
+        },
+        "syntax": {
+            "description": "Whether to enable a syntax highlighting\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "boolean",
+            "default": true
+        },
+        "tabmovement": {
+            "description": "Whether to navigate spaces at the beginning of lines as if they are tabs\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "boolean",
+            "default": false
+        },
+        "tabhighlight": {
+            "description": "Whether to invert tab character colors\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "boolean",
+            "default": false
+        },
+        "tabreverse": {
+            "description": "Whether to reverse tab bar colors\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "boolean",
+            "default": true
+        },
+        "tabsize": {
+            "description": "A tab size\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "integer",
+            "default": 4
+        },
+        "tabstospaces": {
+            "description": "Whether to use spaces instead of tabs\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "boolean",
+            "default": false
+        },
+        "useprimary": {
+            "description": "Whether to use primary clipboard to copy selections in the background\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "boolean",
+            "default": true
+        },
+        "wordwrap": {
+            "description": "Whether to wrap long lines by words\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "boolean",
+            "default": false
+        },
+        "xterm": {
+            "description": "Whether to assume that the current terminal is `xterm`\nhttps://github.com/zyedidia/micro/blob/master/runtime/help/options.md#options",
+            "type": "boolean",
+            "default": false
+        }
+    },
+    "additionalProperties": false
+}

go.mod

@@ -1,23 +1,30 @@
-module github.com/zyedidia/micro
+module github.com/zyedidia/micro/v2
 
 require (
 	github.com/blang/semver v3.5.1+incompatible
 	github.com/dustin/go-humanize v1.0.0
-	github.com/flynn/json5 v0.0.0-20160717195620-7620272ed633
-	github.com/gdamore/tcell v1.3.0
 	github.com/go-errors/errors v1.0.1
+	github.com/kballard/go-shellquote v0.0.0-20180428030007-95032a82bc51
 	github.com/mattn/go-isatty v0.0.11
 	github.com/mattn/go-runewidth v0.0.7
 	github.com/mitchellh/go-homedir v1.1.0
 	github.com/sergi/go-diff v1.1.0
+	github.com/stretchr/testify v1.4.0
 	github.com/yuin/gopher-lua v0.0.0-20191220021717-ab39c6098bdb
-	github.com/zyedidia/clipboard v0.0.0-20190823154308-241f98e9b197
+	github.com/zyedidia/clipper v0.1.1
 	github.com/zyedidia/glob v0.0.0-20170209203856-dd4023a66dc3
-	github.com/zyedidia/poller v0.0.0-20170616160828-ab09682913b7 // indirect
-	github.com/zyedidia/pty v2.0.0+incompatible // indirect
-	github.com/zyedidia/tcell v0.0.0-20200101033337-8f44670b0885
-	github.com/zyedidia/terminal v0.0.0-20180726154117-533c623e2415
-	golang.org/x/text v0.3.2
-	gopkg.in/yaml.v2 v2.2.7
+	github.com/zyedidia/json5 v0.0.0-20200102012142-2da050b1a98d
+	github.com/zyedidia/tcell/v2 v2.0.10-0.20230831153116-061c5b2c7260 // indirect
+	github.com/zyedidia/terminal v0.0.0-20230315200948-4b3bcf6dddef
+	golang.org/x/text v0.3.8
+	gopkg.in/yaml.v2 v2.2.8
 	layeh.com/gopher-luar v1.0.7
 )
+
+replace github.com/kballard/go-shellquote => github.com/zyedidia/go-shellquote v0.0.0-20200613203517-eccd813c0655
+
+replace github.com/mattn/go-runewidth => github.com/zyedidia/go-runewidth v0.0.12
+
+replace layeh.com/gopher-luar => github.com/layeh/gopher-luar v1.0.7
+
+go 1.16

go.sum

@@ -1,81 +1,99 @@
-github.com/DATA-DOG/go-sqlmock v1.3.3/go.mod h1:f/Ixk793poVmq4qj/V1dPUg2JEAKC73Q5eFN3EC/SaM=
 github.com/blang/semver v3.5.1+incompatible h1:cQNTCjp13qL8KC3Nbxr/y2Bqb63oX6wdnnjpJbkM4JQ=
 github.com/blang/semver v3.5.1+incompatible/go.mod h1:kRBLl5iJ+tD4TcOOxsy/0fnwebNt5EWlYSAyrTnjyyk=
 github.com/chzyer/logex v1.1.10/go.mod h1:+Ywpsq7O8HXn0nuIou7OrIPyXbp3wmkHB+jjWRnGsAI=
 github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e/go.mod h1:nSuG5e5PlCu98SY8svDHJxuZscDgtXS6KTTbou5AhLI=
 github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1/go.mod h1:Q3SI9o4m/ZMnBNeIyt5eFwwo7qiLfzFZmjNmxjkiQlU=
+github.com/creack/pty v1.1.18 h1:n56/Zwd5o6whRC5PMGretI4IdRLlmBXYNjScPaBgsbY=
+github.com/creack/pty v1.1.18/go.mod h1:MOBLtS5ELjhRRrroQr9kyvTxUAFNvYEK993ew/Vr4O4=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/dustin/go-humanize v1.0.0 h1:VSnTsYCnlFHaM2/igO1h6X3HA71jcobQuxemgkq4zYo=
 github.com/dustin/go-humanize v1.0.0/go.mod h1:HtrtbFcZ19U5GC7JDqmcUSB87Iq5E25KnS6fMYU6eOk=
-github.com/flynn/json5 v0.0.0-20160717195620-7620272ed633 h1:xJMmr4GMYIbALX5edyoDIOQpc2bOQTeJiWMeCl9lX/8=
-github.com/flynn/json5 v0.0.0-20160717195620-7620272ed633/go.mod h1:NJDK3/o7abx6PP54EOe0G0n0RLmhCo9xv61gUYpI0EY=
 github.com/gdamore/encoding v1.0.0 h1:+7OoQ1Bc6eTm5niUzBa0Ctsh6JbMW6Ra+YNuAtDBdko=
 github.com/gdamore/encoding v1.0.0/go.mod h1:alR0ol34c49FCSBLjhosxzcPHQbf2trDkoo5dl+VrEg=
-github.com/gdamore/tcell v1.3.0 h1:r35w0JBADPZCVQijYebl6YMWWtHRqVEGt7kL2eBADRM=
-github.com/gdamore/tcell v1.3.0/go.mod h1:Hjvr+Ofd+gLglo7RYKxxnzCBmev3BzsS67MebKS4zMM=
 github.com/go-errors/errors v1.0.1 h1:LUHzmkK3GUKUrL/1gfBUxAHzcev3apQlezX/+O7ma6w=
 github.com/go-errors/errors v1.0.1/go.mod h1:f4zRHt4oKfwPJE5k8C9vpYG+aDHdBFUsgrm6/TyX73Q=
+github.com/kr/pretty v0.1.0 h1:L/CwN0zerZDmRFUapSPitk6f+Q3+0za1rQkzVuMiMFI=
 github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
 github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
+github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE=
 github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
-github.com/lucasb-eyer/go-colorful v1.0.2/go.mod h1:0MS4r+7BZKSJ5mw4/S5MPN+qHFF1fYclkSPilDOKW0s=
+github.com/layeh/gopher-luar v1.0.7 h1:wnfZhYiJM748y1A4qYBfcFeMY9HWbdERny+ZL0f/jWc=
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 github.com/lucasb-eyer/go-colorful v1.0.3 h1:QIbQXiugsb+q10B+MI+7DI1oQLdmnep86tWFlaaUAac=
 github.com/lucasb-eyer/go-colorful v1.0.3/go.mod h1:R4dSotOR9KMtayYi1e77YzuveK+i7ruzyGqttikkLy0=
 github.com/mattn/go-isatty v0.0.11 h1:FxPOTFNqGkuDUGi3H/qkUbQO4ZiBa2brKq5r0l8TGeM=
 github.com/mattn/go-isatty v0.0.11/go.mod h1:PhnuNfih5lzO57/f3n+odYbM4JtupLOxQOAqxQCu2WE=
-github.com/mattn/go-runewidth v0.0.4/go.mod h1:LwmH8dsx7+W8Uxz3IHJYH5QSwggIsqBzpuz5H//U1FU=
-github.com/mattn/go-runewidth v0.0.7 h1:Ei8KR0497xHyKJPAv59M1dkC+rOZCMBJ+t3fZ+twI54=
-github.com/mattn/go-runewidth v0.0.7/go.mod h1:H031xJmbD/WCDINGzjvQ9THkh0rPKHF+m2gUSrubnMI=
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 github.com/yuin/gopher-lua v0.0.0-20190206043414-8bfc7677f583/go.mod h1:gqRgreBUhTSL0GeU64rtZ3Uq3wtjOa/TB2YfrtkCbVQ=
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 github.com/yuin/gopher-lua v0.0.0-20191220021717-ab39c6098bdb/go.mod h1:gqRgreBUhTSL0GeU64rtZ3Uq3wtjOa/TB2YfrtkCbVQ=
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+github.com/zyedidia/tcell/v2 v2.0.10-0.20230320201625-54f6acdada4a h1:W4TWa++Wk6uRGxZoxr2nPX1TpIEl+Wxv0mTtocG4TYc=
+github.com/zyedidia/tcell/v2 v2.0.10-0.20230320201625-54f6acdada4a/go.mod h1:i4NNlquIQXFeNecrOgxDQQJdu+7LmTi3g62asvmwUws=
+github.com/zyedidia/tcell/v2 v2.0.10-0.20230831153116-061c5b2c7260 h1:SCAmAacT5BxZsmOFdFy5zwwi6nj1MjA60gydjKdTgXo=
+github.com/zyedidia/tcell/v2 v2.0.10-0.20230831153116-061c5b2c7260/go.mod h1:i4NNlquIQXFeNecrOgxDQQJdu+7LmTi3g62asvmwUws=
+github.com/zyedidia/terminal v0.0.0-20230315200948-4b3bcf6dddef h1:LeB4Qs0Tss4r/Qh8pfsTTqagDYHysfKJLYzAH3MVfu0=
+github.com/zyedidia/terminal v0.0.0-20230315200948-4b3bcf6dddef/go.mod h1:zeb8MJdcCObFKVvur3n2B4BANIPuo2Q8r4iiNs9Enx0=
+golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
+golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
+golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
+golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
+golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
+golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20190204203706-41f3e6584952/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190626150813-e07cf5db2756/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20191026070338-33540a1f6037 h1:YyJpGZS1sBuBCzLAR1VEpK193GlqGZbnPFnPV/5Rsb4=
 golang.org/x/sys v0.0.0-20191026070338-33540a1f6037/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f h1:v4INt8xihDGvnrfjMDVXGxw9wrfxYyCjk0KbXjhR55s=
+golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
+golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
-golang.org/x/text v0.3.2 h1:tW2bmiBqwgJj/UpqtC8EpXEZVYOwU0yG4iWbprSVAcs=
-golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
+golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
+golang.org/x/text v0.3.8 h1:nAL+RVCQ9uMn3vJZbV+MRnydTJFPf8qqY42YiA6MrqY=
+golang.org/x/text v0.3.8/go.mod h1:E6s5w1FMmriuDzIBO73fBruAKo1PCIq6d2Q6DHfQ8WQ=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
+golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
+golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 h1:YR8cESwS4TdDjEe65xsg0ogRM/Nc3DYOhEAlW+xobZo=
 gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v2 v2.2.7 h1:VUgggvou5XRW9mHwD/yXxIYSMtY0zoKQf/v226p2nyo=
-gopkg.in/yaml.v2 v2.2.7/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-layeh.com/gopher-luar v1.0.7 h1:53iv6CCkRs5wyofZ+qVXcyAYQOIG52s6pt4xkqZdq7k=
-layeh.com/gopher-luar v1.0.7/go.mod h1:TPnIVCZ2RJBndm7ohXyaqfhzjlZ+OA2SZR/YwL8tECk=
+gopkg.in/yaml.v2 v2.2.8 h1:obN1ZagJSUGI0Ek/LBmuj4SNLPfIny3KsKFopxRdj10=
+gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=

internal/action/actions_posix.go

@@ -5,7 +5,7 @@ package action
 import (
 	"syscall"
 
-	"github.com/zyedidia/micro/internal/screen"
+	"github.com/zyedidia/micro/v2/internal/screen"
 )
 
 // Suspend sends micro to the background. This is the same as pressing CtrlZ in most unix programs.

internal/action/bindings.go

@@ -3,24 +3,39 @@ package action
 import (
 	"encoding/json"
 	"errors"
+	"fmt"
 	"io/ioutil"
 	"os"
+	"path/filepath"
+	"regexp"
 	"strings"
 	"unicode"
 
-	"github.com/flynn/json5"
-	"github.com/zyedidia/micro/internal/config"
-	"github.com/zyedidia/micro/internal/screen"
-	"github.com/zyedidia/tcell"
+	"github.com/zyedidia/json5"
+	"github.com/zyedidia/micro/v2/internal/config"
+	"github.com/zyedidia/micro/v2/internal/screen"
+	"github.com/zyedidia/tcell/v2"
 )
 
+var Binder = map[string]func(e Event, action string){
+	"command":  InfoMapEvent,
+	"buffer":   BufMapEvent,
+	"terminal": TermMapEvent,
+}
+
+func createBindingsIfNotExist(fname string) {
+	if _, e := os.Stat(fname); os.IsNotExist(e) {
+		ioutil.WriteFile(fname, []byte("{}"), 0644)
+	}
+}
+
+// InitBindings intializes the bindings map by reading from bindings.json
 func InitBindings() {
-	config.Bindings = DefaultBindings()
+	var parsed map[string]interface{}
 
-	var parsed map[string]string
-	defaults := DefaultBindings()
+	filename := filepath.Join(config.ConfigDir, "bindings.json")
+	createBindingsIfNotExist(filename)
 
-	filename := config.ConfigDir + "/bindings.json"
 	if _, e := os.Stat(filename); e == nil {
 		input, err := ioutil.ReadFile(filename)
 		if err != nil {
@@ -34,34 +49,89 @@ func InitBindings() {
 		}
 	}
 
-	for k, v := range defaults {
-		BindKey(k, v)
+	for p, bind := range Binder {
+		defaults := DefaultBindings(p)
+
+		for k, v := range defaults {
+			BindKey(k, v, bind)
+		}
 	}
+
 	for k, v := range parsed {
-		BindKey(k, v)
+		switch val := v.(type) {
+		case string:
+			BindKey(k, val, Binder["buffer"])
+		case map[string]interface{}:
+			bind, ok := Binder[k]
+			if !ok || bind == nil {
+				screen.TermMessage(fmt.Sprintf("%s is not a valid pane type", k))
+				continue
+			}
+			for e, a := range val {
+				s, ok := a.(string)
+				if !ok {
+					screen.TermMessage("Error reading bindings.json: non-string and non-map entry", k)
+				} else {
+					BindKey(e, s, bind)
+				}
+			}
+		default:
+			screen.TermMessage("Error reading bindings.json: non-string and non-map entry", k)
+		}
 	}
 }
 
-func BindKey(k, v string) {
-	event, ok := findEvent(k)
-	if !ok {
-		screen.TermMessage(k, "is not a bindable event")
+func BindKey(k, v string, bind func(e Event, a string)) {
+	event, err := findEvent(k)
+	if err != nil {
+		screen.TermMessage(err)
+		return
 	}
 
-	switch e := event.(type) {
-	case KeyEvent:
-		BufMapKey(e, v)
-	case MouseEvent:
-		BufMapMouse(e, v)
-	case RawEvent:
-		BufMapKey(e, v)
-	}
+	bind(event, v)
 
-	config.Bindings[k] = v
+	// switch e := event.(type) {
+	// case KeyEvent:
+	// 	InfoMapKey(e, v)
+	// case KeySequenceEvent:
+	// 	InfoMapKey(e, v)
+	// case MouseEvent:
+	// 	InfoMapMouse(e, v)
+	// case RawEvent:
+	// 	InfoMapKey(e, v)
+	// }
 }
 
-// findEvent will find binding Key 'b' using string 'k'
-func findEvent(k string) (b Event, ok bool) {
+var r = regexp.MustCompile("<(.+?)>")
+
+func findEvents(k string) (b KeySequenceEvent, ok bool, err error) {
+	var events []Event = nil
+	for len(k) > 0 {
+		groups := r.FindStringSubmatchIndex(k)
+
+		if len(groups) > 3 {
+			if events == nil {
+				events = make([]Event, 0, 3)
+			}
+
+			e, ok := findSingleEvent(k[groups[2]:groups[3]])
+			if !ok {
+				return KeySequenceEvent{}, false, errors.New("Invalid event " + k[groups[2]:groups[3]])
+			}
+
+			events = append(events, e)
+
+			k = k[groups[3]+1:]
+		} else {
+			return KeySequenceEvent{}, false, nil
+		}
+	}
+
+	return KeySequenceEvent{events}, true, nil
+}
+
+// findSingleEvent will find binding Key 'b' using string 'k'
+func findSingleEvent(k string) (b Event, ok bool) {
 	modifiers := tcell.ModNone
 
 	// First, we'll strip off all the modifiers in the name and add them to the
@@ -69,7 +139,7 @@ func findEvent(k string) (b Event, ok bool) {
 modSearch:
 	for {
 		switch {
-		case strings.HasPrefix(k, "-"):
+		case strings.HasPrefix(k, "-") && k != "-":
 			// We optionally support dashes between modifiers
 			k = k[1:]
 		case strings.HasPrefix(k, "Ctrl") && k != "CtrlH":
@@ -92,7 +162,7 @@ modSearch:
 		}
 	}
 
-	if len(k) == 0 {
+	if k == "" {
 		return KeyEvent{}, false
 	}
 
@@ -152,13 +222,31 @@ modSearch:
 	return KeyEvent{}, false
 }
 
+func findEvent(k string) (Event, error) {
+	var event Event
+	event, ok, err := findEvents(k)
+	if err != nil {
+		return nil, err
+	}
+
+	if !ok {
+		event, ok = findSingleEvent(k)
+		if !ok {
+			return nil, errors.New(k + " is not a bindable event")
+		}
+	}
+
+	return event, nil
+}
+
 // TryBindKey tries to bind a key by writing to config.ConfigDir/bindings.json
 // Returns true if the keybinding already existed and a possible error
 func TryBindKey(k, v string, overwrite bool) (bool, error) {
 	var e error
-	var parsed map[string]string
+	var parsed map[string]interface{}
 
-	filename := config.ConfigDir + "/bindings.json"
+	filename := filepath.Join(config.ConfigDir, "bindings.json")
+	createBindingsIfNotExist(filename)
 	if _, e = os.Stat(filename); e == nil {
 		input, err := ioutil.ReadFile(filename)
 		if err != nil {
@@ -170,14 +258,14 @@ func TryBindKey(k, v string, overwrite bool) (bool, error) {
 			return false, errors.New("Error reading bindings.json: " + err.Error())
 		}
 
-		key, ok := findEvent(k)
-		if !ok {
-			return false, errors.New("Invalid event " + k)
+		key, err := findEvent(k)
+		if err != nil {
+			return false, err
 		}
 
 		found := false
 		for ev := range parsed {
-			if e, ok := findEvent(ev); ok {
+			if e, err := findEvent(ev); err == nil {
 				if e == key {
 					if overwrite {
 						parsed[ev] = v
@@ -194,7 +282,7 @@ func TryBindKey(k, v string, overwrite bool) (bool, error) {
 			parsed[k] = v
 		}
 
-		BindKey(k, v)
+		BindKey(k, v, Binder["buffer"])
 
 		txt, _ := json.MarshalIndent(parsed, "", "    ")
 		return true, ioutil.WriteFile(filename, append(txt, '\n'), 0644)
@@ -205,9 +293,10 @@ func TryBindKey(k, v string, overwrite bool) (bool, error) {
 // UnbindKey removes the binding for a key from the bindings.json file
 func UnbindKey(k string) error {
 	var e error
-	var parsed map[string]string
+	var parsed map[string]interface{}
 
-	filename := config.ConfigDir + "/bindings.json"
+	filename := filepath.Join(config.ConfigDir, "bindings.json")
+	createBindingsIfNotExist(filename)
 	if _, e = os.Stat(filename); e == nil {
 		input, err := ioutil.ReadFile(filename)
 		if err != nil {
@@ -219,13 +308,13 @@ func UnbindKey(k string) error {
 			return errors.New("Error reading bindings.json: " + err.Error())
 		}
 
-		key, ok := findEvent(k)
-		if !ok {
-			return errors.New("Invalid event " + k)
+		key, err := findEvent(k)
+		if err != nil {
+			return err
 		}
 
 		for ev := range parsed {
-			if e, ok := findEvent(ev); ok {
+			if e, err := findEvent(ev); err == nil {
 				if e == key {
 					delete(parsed, ev)
 					break
@@ -233,11 +322,12 @@ func UnbindKey(k string) error {
 			}
 		}
 
-		defaults := DefaultBindings()
+		defaults := DefaultBindings("buffer")
 		if a, ok := defaults[k]; ok {
-			BindKey(k, a)
-		} else if _, ok := config.Bindings[k]; ok {
-			delete(config.Bindings, k)
+			BindKey(k, a, Binder["buffer"])
+		} else if _, ok := config.Bindings["buffer"][k]; ok {
+			BufUnmap(key)
+			delete(config.Bindings["buffer"], k)
 		}
 
 		txt, _ := json.MarshalIndent(parsed, "", "    ")
@@ -247,9 +337,9 @@ func UnbindKey(k string) error {
 }
 
 var mouseEvents = map[string]tcell.ButtonMask{
-	"MouseLeft":       tcell.Button1,
-	"MouseMiddle":     tcell.Button2,
-	"MouseRight":      tcell.Button3,
+	"MouseLeft":       tcell.ButtonPrimary,
+	"MouseMiddle":     tcell.ButtonMiddle,
+	"MouseRight":      tcell.ButtonSecondary,
 	"MouseWheelUp":    tcell.WheelUp,
 	"MouseWheelDown":  tcell.WheelDown,
 	"MouseWheelLeft":  tcell.WheelLeft,
@@ -386,107 +476,3 @@ var keyEvents = map[string]tcell.Key{
 	"PgUp":   tcell.KeyPgUp,
 	"PgDown": tcell.KeyPgDn,
 }
-
-// DefaultBindings returns a map containing micro's default keybindings
-func DefaultBindings() map[string]string {
-	return map[string]string{
-		"Up":             "CursorUp",
-		"Down":           "CursorDown",
-		"Right":          "CursorRight",
-		"Left":           "CursorLeft",
-		"ShiftUp":        "SelectUp",
-		"ShiftDown":      "SelectDown",
-		"ShiftLeft":      "SelectLeft",
-		"ShiftRight":     "SelectRight",
-		"AltLeft":        "WordLeft",
-		"AltRight":       "WordRight",
-		"AltUp":          "MoveLinesUp",
-		"AltDown":        "MoveLinesDown",
-		"AltShiftRight":  "SelectWordRight",
-		"AltShiftLeft":   "SelectWordLeft",
-		"CtrlLeft":       "StartOfLine",
-		"CtrlRight":      "EndOfLine",
-		"CtrlShiftLeft":  "SelectToStartOfLine",
-		"ShiftHome":      "SelectToStartOfLine",
-		"CtrlShiftRight": "SelectToEndOfLine",
-		"ShiftEnd":       "SelectToEndOfLine",
-		"CtrlUp":         "CursorStart",
-		"CtrlDown":       "CursorEnd",
-		"CtrlShiftUp":    "SelectToStart",
-		"CtrlShiftDown":  "SelectToEnd",
-		"Alt-{":          "ParagraphPrevious",
-		"Alt-}":          "ParagraphNext",
-		"Enter":          "InsertNewline",
-		"CtrlH":          "Backspace",
-		"Backspace":      "Backspace",
-		"Alt-CtrlH":      "DeleteWordLeft",
-		"Alt-Backspace":  "DeleteWordLeft",
-		"Tab":            "Autocomplete|IndentSelection|InsertTab",
-		"Backtab":        "OutdentSelection|OutdentLine",
-		"CtrlO":          "OpenFile",
-		"CtrlS":          "Save",
-		"CtrlF":          "Find",
-		"CtrlN":          "FindNext",
-		"CtrlP":          "FindPrevious",
-		"CtrlZ":          "Undo",
-		"CtrlY":          "Redo",
-		"CtrlC":          "Copy",
-		"CtrlX":          "Cut",
-		"CtrlK":          "CutLine",
-		"CtrlD":          "DuplicateLine",
-		"CtrlV":          "Paste",
-		"CtrlA":          "SelectAll",
-		"CtrlT":          "AddTab",
-		"Alt,":           "PreviousTab",
-		"Alt.":           "NextTab",
-		"Home":           "StartOfLine",
-		"End":            "EndOfLine",
-		"CtrlHome":       "CursorStart",
-		"CtrlEnd":        "CursorEnd",
-		"PageUp":         "CursorPageUp",
-		"PageDown":       "CursorPageDown",
-		"CtrlPageUp":     "PreviousTab",
-		"CtrlPageDown":   "NextTab",
-		"CtrlG":          "ToggleHelp",
-		"Alt-g":          "ToggleKeyMenu",
-		"CtrlR":          "ToggleRuler",
-		"CtrlL":          "command-edit:goto ",
-		"Delete":         "Delete",
-		"CtrlB":          "ShellMode",
-		"CtrlQ":          "Quit",
-		"CtrlE":          "CommandMode",
-		"CtrlW":          "NextSplit",
-		"CtrlU":          "ToggleMacro",
-		"CtrlJ":          "PlayMacro",
-		"Insert":         "ToggleOverwriteMode",
-
-		// Emacs-style keybindings
-		"Alt-f": "WordRight",
-		"Alt-b": "WordLeft",
-		"Alt-a": "StartOfLine",
-		"Alt-e": "EndOfLine",
-		// "Alt-p": "CursorUp",
-		// "Alt-n": "CursorDown",
-
-		// Integration with file managers
-		"F2":  "Save",
-		"F3":  "Find",
-		"F4":  "Quit",
-		"F7":  "Find",
-		"F10": "Quit",
-		"Esc": "Escape",
-
-		// Mouse bindings
-		"MouseWheelUp":   "ScrollUp",
-		"MouseWheelDown": "ScrollDown",
-		"MouseLeft":      "MousePress",
-		"MouseMiddle":    "PastePrimary",
-		"Ctrl-MouseLeft": "MouseMultiCursor",
-
-		"Alt-n": "SpawnMultiCursor",
-		"Alt-m": "SpawnMultiCursorSelect",
-		"Alt-p": "RemoveMultiCursor",
-		"Alt-c": "RemoveAllMultiCursors",
-		"Alt-x": "SkipMultiCursor",
-	}
-}

internal/action/bufpane.go

@@ -7,27 +7,44 @@ import (
 	luar "layeh.com/gopher-luar"
 
 	lua "github.com/yuin/gopher-lua"
-	"github.com/zyedidia/micro/internal/buffer"
-	"github.com/zyedidia/micro/internal/config"
-	"github.com/zyedidia/micro/internal/display"
-	ulua "github.com/zyedidia/micro/internal/lua"
-	"github.com/zyedidia/micro/internal/screen"
-	"github.com/zyedidia/tcell"
+	"github.com/zyedidia/micro/v2/internal/buffer"
+	"github.com/zyedidia/micro/v2/internal/clipboard"
+	"github.com/zyedidia/micro/v2/internal/config"
+	"github.com/zyedidia/micro/v2/internal/display"
+	ulua "github.com/zyedidia/micro/v2/internal/lua"
+	"github.com/zyedidia/micro/v2/internal/screen"
+	"github.com/zyedidia/micro/v2/internal/util"
+	"github.com/zyedidia/tcell/v2"
 )
 
+// BufKeyAction represents an action bound to a key.
 type BufKeyAction func(*BufPane) bool
+
+// BufMouseAction is an action that must be bound to a mouse event.
 type BufMouseAction func(*BufPane, *tcell.EventMouse) bool
 
-var BufKeyBindings map[Event]BufKeyAction
-var BufKeyStrings map[Event]string
-var BufMouseBindings map[MouseEvent]BufMouseAction
+// BufBindings stores the bindings for the buffer pane type.
+var BufBindings *KeyTree
 
-func init() {
-	BufKeyBindings = make(map[Event]BufKeyAction)
-	BufKeyStrings = make(map[Event]string)
-	BufMouseBindings = make(map[MouseEvent]BufMouseAction)
+// BufKeyActionGeneral makes a general pane action from a BufKeyAction.
+func BufKeyActionGeneral(a BufKeyAction) PaneKeyAction {
+	return func(p Pane) bool {
+		return a(p.(*BufPane))
+	}
 }
 
+// BufMouseActionGeneral makes a general pane mouse action from a BufKeyAction.
+func BufMouseActionGeneral(a BufMouseAction) PaneMouseAction {
+	return func(p Pane, me *tcell.EventMouse) bool {
+		return a(p.(*BufPane), me)
+	}
+}
+
+func init() {
+	BufBindings = NewKeyTree()
+}
+
+// LuaAction makes a BufKeyAction from a lua function.
 func LuaAction(fn string) func(*BufPane) bool {
 	luaFn := strings.Split(fn, ".")
 	if len(luaFn) <= 1 {
@@ -51,9 +68,19 @@ func LuaAction(fn string) func(*BufPane) bool {
 	}
 }
 
-// BufMapKey maps a key event to an action
-func BufMapKey(k Event, action string) {
-	BufKeyStrings[k] = action
+// BufMapKey maps an event to an action
+func BufMapEvent(k Event, action string) {
+	config.Bindings["buffer"][k.Name()] = action
+
+	switch e := k.(type) {
+	case KeyEvent, KeySequenceEvent, RawEvent:
+		bufMapKey(e, action)
+	case MouseEvent:
+		bufMapMouse(e, action)
+	}
+}
+
+func bufMapKey(k Event, action string) {
 	var actionfns []func(*BufPane) bool
 	var names []string
 	var types []byte
@@ -91,44 +118,72 @@ func BufMapKey(k Event, action string) {
 				screen.TermMessage("Lua Error:", a, "does not exist")
 				continue
 			}
-			names = append(names, "")
+			split := strings.SplitN(a, ".", 2)
+			if len(split) > 1 {
+				a = strings.Title(split[0]) + strings.Title(split[1])
+			} else {
+				a = strings.Title(a)
+			}
+
+			names = append(names, a)
 		} else if f, ok := BufKeyActions[a]; ok {
 			afn = f
 			names = append(names, a)
 		} else {
-			screen.TermMessage("Error:", a, "does not exist")
+			screen.TermMessage("Error in bindings: action", a, "does not exist")
 			continue
 		}
 		actionfns = append(actionfns, afn)
 	}
-	BufKeyBindings[k] = func(h *BufPane) bool {
+	bufAction := func(h *BufPane) bool {
 		cursors := h.Buf.GetCursors()
 		success := true
 		for i, a := range actionfns {
+			innerSuccess := true
 			for j, c := range cursors {
+				if c == nil {
+					continue
+				}
 				h.Buf.SetCurCursor(c.Num)
 				h.Cursor = c
 				if i == 0 || (success && types[i-1] == '&') || (!success && types[i-1] == '|') || (types[i-1] == ',') {
-					success = h.execAction(a, names[i], j)
+					innerSuccess = innerSuccess && h.execAction(a, names[i], j)
 				} else {
 					break
 				}
 			}
+			// if the action changed the current pane, update the reference
+			h = MainTab().CurPane()
+			success = innerSuccess
 		}
 		return true
 	}
+
+	BufBindings.RegisterKeyBinding(k, BufKeyActionGeneral(bufAction))
 }
 
 // BufMapMouse maps a mouse event to an action
-func BufMapMouse(k MouseEvent, action string) {
+func bufMapMouse(k MouseEvent, action string) {
 	if f, ok := BufMouseActions[action]; ok {
-		BufMouseBindings[k] = f
+		BufBindings.RegisterMouseBinding(k, BufMouseActionGeneral(f))
 	} else {
-		delete(BufMouseBindings, k)
-		BufMapKey(k, action)
+		// TODO
+		// delete(BufMouseBindings, k)
+		bufMapKey(k, action)
 	}
 }
 
+// BufUnmap unmaps a key or mouse event from any action
+func BufUnmap(k Event) {
+	// TODO
+	// delete(BufKeyBindings, k)
+	//
+	// switch e := k.(type) {
+	// case MouseEvent:
+	// 	delete(BufMouseBindings, e)
+	// }
+}
+
 // The BufPane connects the buffer and the window
 // It provides a cursor (or multiple) and defines a set of actions
 // that can be taken on the buffer
@@ -137,9 +192,13 @@ func BufMapMouse(k MouseEvent, action string) {
 type BufPane struct {
 	display.BWindow
 
+	// Buf is the buffer this BufPane views
 	Buf *buffer.Buffer
+	// Bindings stores the association of key events and actions
+	bindings *KeyTree
 
-	Cursor *buffer.Cursor // the active cursor
+	// Cursor is the currently active buffer cursor
+	Cursor *buffer.Cursor
 
 	// Since tcell doesn't differentiate between a mouse release event
 	// and a mouse move event with no keys pressed, we need to keep
@@ -168,89 +227,181 @@ type BufPane struct {
 	// Same here, just to keep track for mouse move events
 	tripleClick bool
 
-	// Last search stores the last successful search for FindNext and FindPrev
-	lastSearch string
 	// Should the current multiple cursor selection search based on word or
 	// based on selection (false for selection, true for word)
 	multiWord bool
 
 	splitID uint64
+	tab     *Tab
 
 	// remember original location of a search in case the search is canceled
 	searchOrig buffer.Loc
+
+	// The pane may not yet be fully initialized after its creation
+	// since we may not know the window geometry yet. In such case we finish
+	// its initialization a bit later, after the initial resize.
+	initialized bool
 }
 
-func NewBufPane(buf *buffer.Buffer, win display.BWindow) *BufPane {
+func newBufPane(buf *buffer.Buffer, win display.BWindow, tab *Tab) *BufPane {
 	h := new(BufPane)
 	h.Buf = buf
 	h.BWindow = win
+	h.tab = tab
 
 	h.Cursor = h.Buf.GetActiveCursor()
 	h.mouseReleased = true
 
-	config.RunPluginFn("onBufPaneOpen", luar.New(ulua.L, h))
-
 	return h
 }
 
-func NewBufPaneFromBuf(buf *buffer.Buffer) *BufPane {
+// NewBufPane creates a new buffer pane with the given window.
+func NewBufPane(buf *buffer.Buffer, win display.BWindow, tab *Tab) *BufPane {
+	h := newBufPane(buf, win, tab)
+	h.finishInitialize()
+	return h
+}
+
+// NewBufPaneFromBuf constructs a new pane from the given buffer and automatically
+// creates a buf window.
+func NewBufPaneFromBuf(buf *buffer.Buffer, tab *Tab) *BufPane {
 	w := display.NewBufWindow(0, 0, 0, 0, buf)
-	return NewBufPane(buf, w)
+	h := newBufPane(buf, w, tab)
+	// Postpone finishing initializing the pane until we know the actual geometry
+	// of the buf window.
+	return h
 }
 
-// PluginCB calls all plugin callbacks with a certain name and
-// displays an error if there is one and returns the aggregrate
-// boolean response
+// TODO: make sure splitID and tab are set before finishInitialize is called
+func (h *BufPane) finishInitialize() {
+	h.initialRelocate()
+	h.initialized = true
+	config.RunPluginFn("onBufPaneOpen", luar.New(ulua.L, h))
+}
+
+// Resize resizes the pane
+func (h *BufPane) Resize(width, height int) {
+	h.BWindow.Resize(width, height)
+	if !h.initialized {
+		h.finishInitialize()
+	}
+}
+
+// SetTab sets this pane's tab.
+func (h *BufPane) SetTab(t *Tab) {
+	h.tab = t
+}
+
+// Tab returns this pane's tab.
+func (h *BufPane) Tab() *Tab {
+	return h.tab
+}
+
+func (h *BufPane) ResizePane(size int) {
+	n := h.tab.GetNode(h.splitID)
+	n.ResizeSplit(size)
+	h.tab.Resize()
+}
+
+// PluginCB calls all plugin callbacks with a certain name and displays an
+// error if there is one and returns the aggregrate boolean response
 func (h *BufPane) PluginCB(cb string) bool {
-	b, err := config.RunPluginFnBool(cb, luar.New(ulua.L, h))
+	b, err := config.RunPluginFnBool(h.Buf.Settings, cb, luar.New(ulua.L, h))
 	if err != nil {
 		screen.TermMessage(err)
 	}
 	return b
 }
 
-// PluginCBRune is the same as PluginCB but also passes a rune to
-// the plugins
+// PluginCBRune is the same as PluginCB but also passes a rune to the plugins
 func (h *BufPane) PluginCBRune(cb string, r rune) bool {
-	b, err := config.RunPluginFnBool(cb, luar.New(ulua.L, h), luar.New(ulua.L, string(r)))
+	b, err := config.RunPluginFnBool(h.Buf.Settings, cb, luar.New(ulua.L, h), luar.New(ulua.L, string(r)))
 	if err != nil {
 		screen.TermMessage(err)
 	}
 	return b
 }
 
+// OpenBuffer opens the given buffer in this pane.
 func (h *BufPane) OpenBuffer(b *buffer.Buffer) {
 	h.Buf.Close()
 	h.Buf = b
 	h.BWindow.SetBuffer(b)
 	h.Cursor = b.GetActiveCursor()
 	h.Resize(h.GetView().Width, h.GetView().Height)
-	h.Relocate()
-	// Set mouseReleased to true because we assume the mouse is not being pressed when
-	// the editor is opened
+	h.initialRelocate()
+	// Set mouseReleased to true because we assume the mouse is not being
+	// pressed when the editor is opened
 	h.mouseReleased = true
-	// Set isOverwriteMode to false, because we assume we are in the default mode when editor
-	// is opened
+	// Set isOverwriteMode to false, because we assume we are in the default
+	// mode when editor is opened
 	h.isOverwriteMode = false
 	h.lastClickTime = time.Time{}
 }
 
+// GotoLoc moves the cursor to a new location and adjusts the view accordingly.
+// Use GotoLoc when the new location may be far away from the current location.
+func (h *BufPane) GotoLoc(loc buffer.Loc) {
+	sloc := h.SLocFromLoc(loc)
+	d := h.Diff(h.SLocFromLoc(h.Cursor.Loc), sloc)
+
+	h.Cursor.GotoLoc(loc)
+
+	// If the new location is far away from the previous one,
+	// ensure the cursor is at 25% of the window height
+	height := h.BufView().Height
+	if util.Abs(d) >= height {
+		v := h.GetView()
+		v.StartLine = h.Scroll(sloc, -height/4)
+		h.ScrollAdjust()
+		v.StartCol = 0
+	}
+	h.Relocate()
+}
+
+func (h *BufPane) initialRelocate() {
+	sloc := h.SLocFromLoc(h.Cursor.Loc)
+	height := h.BufView().Height
+
+	// If the initial cursor location is far away from the beginning
+	// of the buffer, ensure the cursor is at 25% of the window height
+	v := h.GetView()
+	if h.Diff(display.SLoc{0, 0}, sloc) < height {
+		v.StartLine = display.SLoc{0, 0}
+	} else {
+		v.StartLine = h.Scroll(sloc, -height/4)
+		h.ScrollAdjust()
+	}
+	v.StartCol = 0
+	h.Relocate()
+}
+
+// ID returns this pane's split id.
 func (h *BufPane) ID() uint64 {
 	return h.splitID
 }
 
+// SetID sets the split ID of this pane.
 func (h *BufPane) SetID(i uint64) {
 	h.splitID = i
 }
 
+// Name returns the BufPane's name.
 func (h *BufPane) Name() string {
-	return h.Buf.GetName()
+	n := h.Buf.GetName()
+	if h.Buf.Modified() {
+		n += " +"
+	}
+	return n
 }
 
 // HandleEvent executes the tcell event properly
 func (h *BufPane) HandleEvent(event tcell.Event) {
-	if h.Buf.ExternallyModified() {
-		InfoBar.YNPrompt("The file on disk has changed. Reload file? (y,n)", func(yes, canceled bool) {
+	if h.Buf.ExternallyModified() && !h.Buf.ReloadDisabled {
+		InfoBar.YNPrompt("The file on disk has changed. Reload file? (y,n,esc)", func(yes, canceled bool) {
+			if canceled {
+				h.Buf.DisableReload()
+			}
 			if !yes || canceled {
 				h.Buf.UpdateModTime()
 			} else {
@@ -272,7 +423,7 @@ func (h *BufPane) HandleEvent(event tcell.Event) {
 	case *tcell.EventKey:
 		ke := KeyEvent{
 			code: e.Key(),
-			mod:  e.Modifiers(),
+			mod:  metaToAlt(e.Modifiers()),
 			r:    e.Rune(),
 		}
 
@@ -285,7 +436,7 @@ func (h *BufPane) HandleEvent(event tcell.Event) {
 		switch e.Buttons() {
 		case tcell.Button1:
 			_, my := e.Position()
-			if h.Buf.Settings["statusline"].(bool) && my >= h.GetView().Y+h.GetView().Height-1 {
+			if h.Buf.Type.Kind != buffer.BTInfo.Kind && h.Buf.Settings["statusline"].(bool) && my >= h.GetView().Y+h.GetView().Height-1 {
 				cancel = true
 			}
 		case tcell.ButtonNone:
@@ -310,10 +461,11 @@ func (h *BufPane) HandleEvent(event tcell.Event) {
 				// release the mouse
 
 				// if !h.doubleClick && !h.tripleClick {
-				// 	h.Cursor.Loc = mouseLoc
 				// 	h.Cursor.SetSelectionEnd(h.Cursor.Loc)
-				// 	h.Cursor.CopySelection("primary")
 				// }
+				if h.Cursor.HasSelection() {
+					h.Cursor.CopySelection(clipboard.PrimaryReg)
+				}
 				h.mouseReleased = true
 			}
 		}
@@ -321,7 +473,7 @@ func (h *BufPane) HandleEvent(event tcell.Event) {
 		if !cancel {
 			me := MouseEvent{
 				btn: e.Buttons(),
-				mod: e.Modifiers(),
+				mod: metaToAlt(e.Modifiers()),
 			}
 			h.DoMouseEvent(me, e)
 		}
@@ -345,17 +497,31 @@ func (h *BufPane) HandleEvent(event tcell.Event) {
 	}
 }
 
+// Bindings returns the current bindings tree for this buffer.
+func (h *BufPane) Bindings() *KeyTree {
+	if h.bindings != nil {
+		return h.bindings
+	}
+	return BufBindings
+}
+
 // DoKeyEvent executes a key event by finding the action it is bound
 // to and executing it (possibly multiple times for multiple cursors)
 func (h *BufPane) DoKeyEvent(e Event) bool {
-	if action, ok := BufKeyBindings[e]; ok {
-		return action(h)
+	binds := h.Bindings()
+	action, more := binds.NextEvent(e, nil)
+	if action != nil && !more {
+		action(h)
+		binds.ResetEvents()
+		return true
+	} else if action == nil && !more {
+		binds.ResetEvents()
 	}
-	return false
+	return more
 }
 
 func (h *BufPane) execAction(action func(*BufPane) bool, name string, cursor int) bool {
-	if name != "Autocomplete" {
+	if name != "Autocomplete" && name != "CycleAutocompleteBack" {
 		h.Buf.HasSuggestions = false
 	}
 
@@ -366,7 +532,7 @@ func (h *BufPane) execAction(action func(*BufPane) bool, name string, cursor int
 			success = success && h.PluginCB("on"+name)
 
 			if isMulti {
-				if recording_macro {
+				if recordingMacro {
 					if name != "ToggleMacro" && name != "PlayMacro" {
 						curmacro = append(curmacro, action)
 					}
@@ -385,22 +551,34 @@ func (h *BufPane) completeAction(action string) {
 }
 
 func (h *BufPane) HasKeyEvent(e Event) bool {
-	_, ok := BufKeyBindings[e]
-	return ok
+	// TODO
+	return true
+	// _, ok := BufKeyBindings[e]
+	// return ok
 }
 
 // DoMouseEvent executes a mouse event by finding the action it is bound
 // to and executing it
 func (h *BufPane) DoMouseEvent(e MouseEvent, te *tcell.EventMouse) bool {
-	if action, ok := BufMouseBindings[e]; ok {
-		if action(h, te) {
-			h.Relocate()
-		}
+	binds := h.Bindings()
+	action, _ := binds.NextEvent(e, te)
+	if action != nil {
+		action(h)
+		binds.ResetEvents()
 		return true
-	} else if h.HasKeyEvent(e) {
-		return h.DoKeyEvent(e)
 	}
+	// TODO
 	return false
+
+	// if action, ok := BufMouseBindings[e]; ok {
+	// 	if action(h, te) {
+	// 		h.Relocate()
+	// 	}
+	// 	return true
+	// } else if h.HasKeyEvent(e) {
+	// 	return h.DoKeyEvent(e)
+	// }
+	// return false
 }
 
 // DoRuneInsert inserts a given rune into the current buffer
@@ -426,33 +604,50 @@ func (h *BufPane) DoRuneInsert(r rune) {
 		} else {
 			h.Buf.Insert(c.Loc, string(r))
 		}
-		if recording_macro {
+		if recordingMacro {
 			curmacro = append(curmacro, r)
 		}
+		h.Relocate()
 		h.PluginCBRune("onRune", r)
 	}
 }
 
+// VSplitIndex opens the given buffer in a vertical split on the given side.
+func (h *BufPane) VSplitIndex(buf *buffer.Buffer, right bool) *BufPane {
+	e := NewBufPaneFromBuf(buf, h.tab)
+	e.splitID = MainTab().GetNode(h.splitID).VSplit(right)
+	MainTab().Panes = append(MainTab().Panes, e)
+	MainTab().Resize()
+	MainTab().SetActive(len(MainTab().Panes) - 1)
+	return e
+}
+
+// HSplitIndex opens the given buffer in a horizontal split on the given side.
+func (h *BufPane) HSplitIndex(buf *buffer.Buffer, bottom bool) *BufPane {
+	e := NewBufPaneFromBuf(buf, h.tab)
+	e.splitID = MainTab().GetNode(h.splitID).HSplit(bottom)
+	MainTab().Panes = append(MainTab().Panes, e)
+	MainTab().Resize()
+	MainTab().SetActive(len(MainTab().Panes) - 1)
+	return e
+}
+
+// VSplitBuf opens the given buffer in a new vertical split.
 func (h *BufPane) VSplitBuf(buf *buffer.Buffer) *BufPane {
-	e := NewBufPaneFromBuf(buf)
-	e.splitID = MainTab().GetNode(h.splitID).VSplit(h.Buf.Settings["splitright"].(bool))
-	MainTab().Panes = append(MainTab().Panes, e)
-	MainTab().Resize()
-	MainTab().SetActive(len(MainTab().Panes) - 1)
-	return e
+	return h.VSplitIndex(buf, h.Buf.Settings["splitright"].(bool))
 }
+
+// HSplitBuf opens the given buffer in a new horizontal split.
 func (h *BufPane) HSplitBuf(buf *buffer.Buffer) *BufPane {
-	e := NewBufPaneFromBuf(buf)
-	e.splitID = MainTab().GetNode(h.splitID).HSplit(h.Buf.Settings["splitbottom"].(bool))
-	MainTab().Panes = append(MainTab().Panes, e)
-	MainTab().Resize()
-	MainTab().SetActive(len(MainTab().Panes) - 1)
-	return e
+	return h.HSplitIndex(buf, h.Buf.Settings["splitbottom"].(bool))
 }
+
+// Close this pane.
 func (h *BufPane) Close() {
 	h.Buf.Close()
 }
 
+// SetActive marks this pane as active.
 func (h *BufPane) SetActive(b bool) {
 	h.BWindow.SetActive(b)
 	if b {
@@ -475,99 +670,118 @@ func (h *BufPane) SetActive(b bool) {
 
 // BufKeyActions contains the list of all possible key actions the bufhandler could execute
 var BufKeyActions = map[string]BufKeyAction{
-	"CursorUp":               (*BufPane).CursorUp,
-	"CursorDown":             (*BufPane).CursorDown,
-	"CursorPageUp":           (*BufPane).CursorPageUp,
-	"CursorPageDown":         (*BufPane).CursorPageDown,
-	"CursorLeft":             (*BufPane).CursorLeft,
-	"CursorRight":            (*BufPane).CursorRight,
-	"CursorStart":            (*BufPane).CursorStart,
-	"CursorEnd":              (*BufPane).CursorEnd,
-	"SelectToStart":          (*BufPane).SelectToStart,
-	"SelectToEnd":            (*BufPane).SelectToEnd,
-	"SelectUp":               (*BufPane).SelectUp,
-	"SelectDown":             (*BufPane).SelectDown,
-	"SelectLeft":             (*BufPane).SelectLeft,
-	"SelectRight":            (*BufPane).SelectRight,
-	"WordRight":              (*BufPane).WordRight,
-	"WordLeft":               (*BufPane).WordLeft,
-	"SelectWordRight":        (*BufPane).SelectWordRight,
-	"SelectWordLeft":         (*BufPane).SelectWordLeft,
-	"DeleteWordRight":        (*BufPane).DeleteWordRight,
-	"DeleteWordLeft":         (*BufPane).DeleteWordLeft,
-	"SelectLine":             (*BufPane).SelectLine,
-	"SelectToStartOfLine":    (*BufPane).SelectToStartOfLine,
-	"SelectToEndOfLine":      (*BufPane).SelectToEndOfLine,
-	"ParagraphPrevious":      (*BufPane).ParagraphPrevious,
-	"ParagraphNext":          (*BufPane).ParagraphNext,
-	"InsertNewline":          (*BufPane).InsertNewline,
-	"Backspace":              (*BufPane).Backspace,
-	"Delete":                 (*BufPane).Delete,
-	"InsertTab":              (*BufPane).InsertTab,
-	"Save":                   (*BufPane).Save,
-	"SaveAll":                (*BufPane).SaveAll,
-	"SaveAs":                 (*BufPane).SaveAs,
-	"Find":                   (*BufPane).Find,
-	"FindNext":               (*BufPane).FindNext,
-	"FindPrevious":           (*BufPane).FindPrevious,
-	"Center":                 (*BufPane).Center,
-	"Undo":                   (*BufPane).Undo,
-	"Redo":                   (*BufPane).Redo,
-	"Copy":                   (*BufPane).Copy,
-	"Cut":                    (*BufPane).Cut,
-	"CutLine":                (*BufPane).CutLine,
-	"DuplicateLine":          (*BufPane).DuplicateLine,
-	"DeleteLine":             (*BufPane).DeleteLine,
-	"MoveLinesUp":            (*BufPane).MoveLinesUp,
-	"MoveLinesDown":          (*BufPane).MoveLinesDown,
-	"IndentSelection":        (*BufPane).IndentSelection,
-	"OutdentSelection":       (*BufPane).OutdentSelection,
-	"Autocomplete":           (*BufPane).Autocomplete,
-	"OutdentLine":            (*BufPane).OutdentLine,
-	"Paste":                  (*BufPane).Paste,
-	"PastePrimary":           (*BufPane).PastePrimary,
-	"SelectAll":              (*BufPane).SelectAll,
-	"OpenFile":               (*BufPane).OpenFile,
-	"Start":                  (*BufPane).Start,
-	"End":                    (*BufPane).End,
-	"PageUp":                 (*BufPane).PageUp,
-	"PageDown":               (*BufPane).PageDown,
-	"SelectPageUp":           (*BufPane).SelectPageUp,
-	"SelectPageDown":         (*BufPane).SelectPageDown,
-	"HalfPageUp":             (*BufPane).HalfPageUp,
-	"HalfPageDown":           (*BufPane).HalfPageDown,
-	"StartOfLine":            (*BufPane).StartOfLine,
-	"EndOfLine":              (*BufPane).EndOfLine,
-	"ToggleHelp":             (*BufPane).ToggleHelp,
-	"ToggleKeyMenu":          (*BufPane).ToggleKeyMenu,
-	"ToggleRuler":            (*BufPane).ToggleRuler,
-	"ClearStatus":            (*BufPane).ClearStatus,
-	"ShellMode":              (*BufPane).ShellMode,
-	"CommandMode":            (*BufPane).CommandMode,
-	"ToggleOverwriteMode":    (*BufPane).ToggleOverwriteMode,
-	"Escape":                 (*BufPane).Escape,
-	"Quit":                   (*BufPane).Quit,
-	"QuitAll":                (*BufPane).QuitAll,
-	"AddTab":                 (*BufPane).AddTab,
-	"PreviousTab":            (*BufPane).PreviousTab,
-	"NextTab":                (*BufPane).NextTab,
-	"NextSplit":              (*BufPane).NextSplit,
-	"PreviousSplit":          (*BufPane).PreviousSplit,
-	"Unsplit":                (*BufPane).Unsplit,
-	"VSplit":                 (*BufPane).VSplitAction,
-	"HSplit":                 (*BufPane).HSplitAction,
-	"ToggleMacro":            (*BufPane).ToggleMacro,
-	"PlayMacro":              (*BufPane).PlayMacro,
-	"Suspend":                (*BufPane).Suspend,
-	"ScrollUp":               (*BufPane).ScrollUpAction,
-	"ScrollDown":             (*BufPane).ScrollDownAction,
-	"SpawnMultiCursor":       (*BufPane).SpawnMultiCursor,
-	"SpawnMultiCursorSelect": (*BufPane).SpawnMultiCursorSelect,
-	"RemoveMultiCursor":      (*BufPane).RemoveMultiCursor,
-	"RemoveAllMultiCursors":  (*BufPane).RemoveAllMultiCursors,
-	"SkipMultiCursor":        (*BufPane).SkipMultiCursor,
-	"JumpToMatchingBrace":    (*BufPane).JumpToMatchingBrace,
-	"None":                   (*BufPane).None,
+	"CursorUp":                  (*BufPane).CursorUp,
+	"CursorDown":                (*BufPane).CursorDown,
+	"CursorPageUp":              (*BufPane).CursorPageUp,
+	"CursorPageDown":            (*BufPane).CursorPageDown,
+	"CursorLeft":                (*BufPane).CursorLeft,
+	"CursorRight":               (*BufPane).CursorRight,
+	"CursorStart":               (*BufPane).CursorStart,
+	"CursorEnd":                 (*BufPane).CursorEnd,
+	"SelectToStart":             (*BufPane).SelectToStart,
+	"SelectToEnd":               (*BufPane).SelectToEnd,
+	"SelectUp":                  (*BufPane).SelectUp,
+	"SelectDown":                (*BufPane).SelectDown,
+	"SelectLeft":                (*BufPane).SelectLeft,
+	"SelectRight":               (*BufPane).SelectRight,
+	"WordRight":                 (*BufPane).WordRight,
+	"WordLeft":                  (*BufPane).WordLeft,
+	"SelectWordRight":           (*BufPane).SelectWordRight,
+	"SelectWordLeft":            (*BufPane).SelectWordLeft,
+	"DeleteWordRight":           (*BufPane).DeleteWordRight,
+	"DeleteWordLeft":            (*BufPane).DeleteWordLeft,
+	"SelectLine":                (*BufPane).SelectLine,
+	"SelectToStartOfLine":       (*BufPane).SelectToStartOfLine,
+	"SelectToStartOfText":       (*BufPane).SelectToStartOfText,
+	"SelectToStartOfTextToggle": (*BufPane).SelectToStartOfTextToggle,
+	"SelectToEndOfLine":         (*BufPane).SelectToEndOfLine,
+	"ParagraphPrevious":         (*BufPane).ParagraphPrevious,
+	"ParagraphNext":             (*BufPane).ParagraphNext,
+	"InsertNewline":             (*BufPane).InsertNewline,
+	"Backspace":                 (*BufPane).Backspace,
+	"Delete":                    (*BufPane).Delete,
+	"InsertTab":                 (*BufPane).InsertTab,
+	"Save":                      (*BufPane).Save,
+	"SaveAll":                   (*BufPane).SaveAll,
+	"SaveAs":                    (*BufPane).SaveAs,
+	"Find":                      (*BufPane).Find,
+	"FindLiteral":               (*BufPane).FindLiteral,
+	"FindNext":                  (*BufPane).FindNext,
+	"FindPrevious":              (*BufPane).FindPrevious,
+	"DiffNext":                  (*BufPane).DiffNext,
+	"DiffPrevious":              (*BufPane).DiffPrevious,
+	"Center":                    (*BufPane).Center,
+	"Undo":                      (*BufPane).Undo,
+	"Redo":                      (*BufPane).Redo,
+	"Copy":                      (*BufPane).Copy,
+	"CopyLine":                  (*BufPane).CopyLine,
+	"Cut":                       (*BufPane).Cut,
+	"CutLine":                   (*BufPane).CutLine,
+	"DuplicateLine":             (*BufPane).DuplicateLine,
+	"DeleteLine":                (*BufPane).DeleteLine,
+	"MoveLinesUp":               (*BufPane).MoveLinesUp,
+	"MoveLinesDown":             (*BufPane).MoveLinesDown,
+	"IndentSelection":           (*BufPane).IndentSelection,
+	"OutdentSelection":          (*BufPane).OutdentSelection,
+	"Autocomplete":              (*BufPane).Autocomplete,
+	"CycleAutocompleteBack":     (*BufPane).CycleAutocompleteBack,
+	"OutdentLine":               (*BufPane).OutdentLine,
+	"IndentLine":                (*BufPane).IndentLine,
+	"Paste":                     (*BufPane).Paste,
+	"PastePrimary":              (*BufPane).PastePrimary,
+	"SelectAll":                 (*BufPane).SelectAll,
+	"OpenFile":                  (*BufPane).OpenFile,
+	"Start":                     (*BufPane).Start,
+	"End":                       (*BufPane).End,
+	"PageUp":                    (*BufPane).PageUp,
+	"PageDown":                  (*BufPane).PageDown,
+	"SelectPageUp":              (*BufPane).SelectPageUp,
+	"SelectPageDown":            (*BufPane).SelectPageDown,
+	"HalfPageUp":                (*BufPane).HalfPageUp,
+	"HalfPageDown":              (*BufPane).HalfPageDown,
+	"StartOfText":               (*BufPane).StartOfText,
+	"StartOfTextToggle":         (*BufPane).StartOfTextToggle,
+	"StartOfLine":               (*BufPane).StartOfLine,
+	"EndOfLine":                 (*BufPane).EndOfLine,
+	"ToggleHelp":                (*BufPane).ToggleHelp,
+	"ToggleKeyMenu":             (*BufPane).ToggleKeyMenu,
+	"ToggleDiffGutter":          (*BufPane).ToggleDiffGutter,
+	"ToggleRuler":               (*BufPane).ToggleRuler,
+	"ToggleHighlightSearch":     (*BufPane).ToggleHighlightSearch,
+	"UnhighlightSearch":         (*BufPane).UnhighlightSearch,
+	"ClearStatus":               (*BufPane).ClearStatus,
+	"ShellMode":                 (*BufPane).ShellMode,
+	"CommandMode":               (*BufPane).CommandMode,
+	"ToggleOverwriteMode":       (*BufPane).ToggleOverwriteMode,
+	"Escape":                    (*BufPane).Escape,
+	"Quit":                      (*BufPane).Quit,
+	"QuitAll":                   (*BufPane).QuitAll,
+	"ForceQuit":                 (*BufPane).ForceQuit,
+	"AddTab":                    (*BufPane).AddTab,
+	"PreviousTab":               (*BufPane).PreviousTab,
+	"NextTab":                   (*BufPane).NextTab,
+	"NextSplit":                 (*BufPane).NextSplit,
+	"PreviousSplit":             (*BufPane).PreviousSplit,
+	"Unsplit":                   (*BufPane).Unsplit,
+	"VSplit":                    (*BufPane).VSplitAction,
+	"HSplit":                    (*BufPane).HSplitAction,
+	"ToggleMacro":               (*BufPane).ToggleMacro,
+	"PlayMacro":                 (*BufPane).PlayMacro,
+	"Suspend":                   (*BufPane).Suspend,
+	"ScrollUp":                  (*BufPane).ScrollUpAction,
+	"ScrollDown":                (*BufPane).ScrollDownAction,
+	"SpawnMultiCursor":          (*BufPane).SpawnMultiCursor,
+	"SpawnMultiCursorUp":        (*BufPane).SpawnMultiCursorUp,
+	"SpawnMultiCursorDown":      (*BufPane).SpawnMultiCursorDown,
+	"SpawnMultiCursorSelect":    (*BufPane).SpawnMultiCursorSelect,
+	"RemoveMultiCursor":         (*BufPane).RemoveMultiCursor,
+	"RemoveAllMultiCursors":     (*BufPane).RemoveAllMultiCursors,
+	"SkipMultiCursor":           (*BufPane).SkipMultiCursor,
+	"JumpToMatchingBrace":       (*BufPane).JumpToMatchingBrace,
+	"JumpLine":                  (*BufPane).JumpLine,
+	"Deselect":                  (*BufPane).Deselect,
+	"ClearInfo":                 (*BufPane).ClearInfo,
+	"None":                      (*BufPane).None,
 
 	// This was changed to InsertNewline but I don't want to break backwards compatibility
 	"InsertEnter": (*BufPane).InsertNewline,
@@ -584,51 +798,58 @@ var BufMouseActions = map[string]BufMouseAction{
 // Generally actions that modify global editor state like quitting or
 // saving should not be included in this list
 var MultiActions = map[string]bool{
-	"CursorUp":            true,
-	"CursorDown":          true,
-	"CursorPageUp":        true,
-	"CursorPageDown":      true,
-	"CursorLeft":          true,
-	"CursorRight":         true,
-	"CursorStart":         true,
-	"CursorEnd":           true,
-	"SelectToStart":       true,
-	"SelectToEnd":         true,
-	"SelectUp":            true,
-	"SelectDown":          true,
-	"SelectLeft":          true,
-	"SelectRight":         true,
-	"WordRight":           true,
-	"WordLeft":            true,
-	"SelectWordRight":     true,
-	"SelectWordLeft":      true,
-	"DeleteWordRight":     true,
-	"DeleteWordLeft":      true,
-	"SelectLine":          true,
-	"SelectToStartOfLine": true,
-	"SelectToEndOfLine":   true,
-	"ParagraphPrevious":   true,
-	"ParagraphNext":       true,
-	"InsertNewline":       true,
-	"Backspace":           true,
-	"Delete":              true,
-	"InsertTab":           true,
-	"FindNext":            true,
-	"FindPrevious":        true,
-	"Cut":                 true,
-	"CutLine":             true,
-	"DuplicateLine":       true,
-	"DeleteLine":          true,
-	"MoveLinesUp":         true,
-	"MoveLinesDown":       true,
-	"IndentSelection":     true,
-	"OutdentSelection":    true,
-	"OutdentLine":         true,
-	"Paste":               true,
-	"PastePrimary":        true,
-	"SelectPageUp":        true,
-	"SelectPageDown":      true,
-	"StartOfLine":         true,
-	"EndOfLine":           true,
-	"JumpToMatchingBrace": true,
+	"CursorUp":                  true,
+	"CursorDown":                true,
+	"CursorPageUp":              true,
+	"CursorPageDown":            true,
+	"CursorLeft":                true,
+	"CursorRight":               true,
+	"CursorStart":               true,
+	"CursorEnd":                 true,
+	"SelectToStart":             true,
+	"SelectToEnd":               true,
+	"SelectUp":                  true,
+	"SelectDown":                true,
+	"SelectLeft":                true,
+	"SelectRight":               true,
+	"WordRight":                 true,
+	"WordLeft":                  true,
+	"SelectWordRight":           true,
+	"SelectWordLeft":            true,
+	"DeleteWordRight":           true,
+	"DeleteWordLeft":            true,
+	"SelectLine":                true,
+	"SelectToStartOfLine":       true,
+	"SelectToStartOfText":       true,
+	"SelectToStartOfTextToggle": true,
+	"SelectToEndOfLine":         true,
+	"ParagraphPrevious":         true,
+	"ParagraphNext":             true,
+	"InsertNewline":             true,
+	"Backspace":                 true,
+	"Delete":                    true,
+	"InsertTab":                 true,
+	"FindNext":                  true,
+	"FindPrevious":              true,
+	"CopyLine":                  true,
+	"Copy":                      true,
+	"Cut":                       true,
+	"CutLine":                   true,
+	"DuplicateLine":             true,
+	"DeleteLine":                true,
+	"MoveLinesUp":               true,
+	"MoveLinesDown":             true,
+	"IndentSelection":           true,
+	"OutdentSelection":          true,
+	"OutdentLine":               true,
+	"IndentLine":                true,
+	"Paste":                     true,
+	"PastePrimary":              true,
+	"SelectPageUp":              true,
+	"SelectPageDown":            true,
+	"StartOfLine":               true,
+	"StartOfText":               true,
+	"StartOfTextToggle":         true,
+	"EndOfLine":                 true,
+	"JumpToMatchingBrace":       true,
 }

internal/action/command.go

@@ -10,18 +10,14 @@ import (
 	"regexp"
 	"strconv"
 	"strings"
-	"unicode/utf8"
 
-	luar "layeh.com/gopher-luar"
-
-	lua "github.com/yuin/gopher-lua"
-	"github.com/zyedidia/micro/internal/buffer"
-	"github.com/zyedidia/micro/internal/config"
-	ulua "github.com/zyedidia/micro/internal/lua"
-	"github.com/zyedidia/micro/internal/screen"
-	"github.com/zyedidia/micro/internal/shell"
-	"github.com/zyedidia/micro/internal/util"
-	"github.com/zyedidia/micro/pkg/shellwords"
+	shellquote "github.com/kballard/go-shellquote"
+	"github.com/zyedidia/micro/v2/internal/buffer"
+	"github.com/zyedidia/micro/v2/internal/clipboard"
+	"github.com/zyedidia/micro/v2/internal/config"
+	"github.com/zyedidia/micro/v2/internal/screen"
+	"github.com/zyedidia/micro/v2/internal/shell"
+	"github.com/zyedidia/micro/v2/internal/util"
 )
 
 // A Command contains information about how to execute a command
@@ -60,6 +56,7 @@ func InitCommands() {
 		"cd":         {(*BufPane).CdCmd, buffer.FileComplete},
 		"pwd":        {(*BufPane).PwdCmd, nil},
 		"open":       {(*BufPane).OpenCmd, buffer.FileComplete},
+		"tabmove":    {(*BufPane).TabMoveCmd, nil},
 		"tabswitch":  {(*BufPane).TabSwitchCmd, nil},
 		"term":       {(*BufPane).TermCmd, nil},
 		"memusage":   {(*BufPane).MemUsageCmd, nil},
@@ -71,29 +68,9 @@ func InitCommands() {
 
 // MakeCommand is a function to easily create new commands
 // This can be called by plugins in Lua so that plugins can define their own commands
-func LuaMakeCommand(name, function string, completer buffer.Completer) {
-	action := LuaFunctionCommand(function)
-	commands[name] = Command{action, completer}
-}
-
-// LuaFunctionCommand returns a normal function
-// so that a command can be bound to a lua function
-func LuaFunctionCommand(fn string) func(*BufPane, []string) {
-	luaFn := strings.Split(fn, ".")
-	if len(luaFn) <= 1 {
-		return nil
-	}
-	plName, plFn := luaFn[0], luaFn[1]
-	pl := config.FindPlugin(plName)
-	if pl == nil {
-		return nil
-	}
-	return func(bp *BufPane, args []string) {
-		luaArgs := []lua.LValue{luar.New(ulua.L, bp), luar.New(ulua.L, args)}
-		_, err := pl.Call(plFn, luaArgs...)
-		if err != nil {
-			screen.TermMessage(err)
-		}
+func MakeCommand(name string, action func(bp *BufPane, args []string), completer buffer.Completer) {
+	if action != nil {
+		commands[name] = Command{action, completer}
 	}
 }
 
@@ -120,106 +97,20 @@ func CommandAction(cmd string) BufKeyAction {
 	}
 }
 
-var PluginCmds = []string{"list", "info", "version"}
+var PluginCmds = []string{"install", "remove", "update", "available", "list", "search"}
 
 // PluginCmd installs, removes, updates, lists, or searches for given plugins
 func (h *BufPane) PluginCmd(args []string) {
-	if len(args) <= 0 {
-		InfoBar.Error("Not enough arguments, see 'help commands'")
+	if len(args) < 1 {
+		InfoBar.Error("Not enough arguments")
 		return
 	}
 
-	valid := true
-	switch args[0] {
-	case "list":
-		for _, pl := range config.Plugins {
-			var en string
-			if pl.IsEnabled() {
-				en = "enabled"
-			} else {
-				en = "disabled"
-			}
-			WriteLog(fmt.Sprintf("%s: %s", pl.Name, en))
-			if pl.Default {
-				WriteLog(" (default)\n")
-			} else {
-				WriteLog("\n")
-			}
-		}
-		WriteLog("Default plugins come pre-installed with micro.")
-	case "version":
-		if len(args) <= 1 {
-			InfoBar.Error("No plugin provided to give info for")
-			return
-		}
-		found := false
-		for _, pl := range config.Plugins {
-			if pl.Name == args[1] {
-				found = true
-				if pl.Info == nil {
-					InfoBar.Message("Sorry no version for", pl.Name)
-					return
-				}
-
-				WriteLog("Version: " + pl.Info.Vstr + "\n")
-			}
-		}
-		if !found {
-			InfoBar.Message(args[1], "is not installed")
-		}
-	case "info":
-		if len(args) <= 1 {
-			InfoBar.Error("No plugin provided to give info for")
-			return
-		}
-		found := false
-		for _, pl := range config.Plugins {
-			if pl.Name == args[1] {
-				found = true
-				if pl.Info == nil {
-					InfoBar.Message("Sorry no info for ", pl.Name)
-					return
-				}
-
-				var buffer bytes.Buffer
-				buffer.WriteString("Name: ")
-				buffer.WriteString(pl.Info.Name)
-				buffer.WriteString("\n")
-				buffer.WriteString("Description: ")
-				buffer.WriteString(pl.Info.Desc)
-				buffer.WriteString("\n")
-				buffer.WriteString("Website: ")
-				buffer.WriteString(pl.Info.Site)
-				buffer.WriteString("\n")
-				buffer.WriteString("Installation link: ")
-				buffer.WriteString(pl.Info.Install)
-				buffer.WriteString("\n")
-				buffer.WriteString("Version: ")
-				buffer.WriteString(pl.Info.Vstr)
-				buffer.WriteString("\n")
-				buffer.WriteString("Requirements:")
-				buffer.WriteString("\n")
-				for _, r := range pl.Info.Require {
-					buffer.WriteString("    - ")
-					buffer.WriteString(r)
-					buffer.WriteString("\n")
-				}
-
-				WriteLog(buffer.String())
-			}
-		}
-		if !found {
-			InfoBar.Message(args[1], "is not installed")
-			return
-		}
-	default:
-		InfoBar.Error("Not a valid plugin command")
-		return
+	if h.Buf.Type != buffer.BTLog {
+		h.OpenLogBuf()
 	}
 
-	if valid && h.Buf.Type != buffer.BTLog {
-		OpenLogBuf(h)
-	}
+	config.PluginCommand(buffer.LogBuf, args[0], args[1:])
 }
 
 // RetabCmd changes all spaces to tabs or all tabs to spaces
@@ -233,7 +124,7 @@ func (h *BufPane) RetabCmd(args []string) {
 func (h *BufPane) RawCmd(args []string) {
 	width, height := screen.Screen.Size()
 	iOffset := config.GetInfoBarOffset()
-	tp := NewTabFromPane(0, 0, width, height-iOffset, NewRawPane())
+	tp := NewTabFromPane(0, 0, width, height-iOffset, NewRawPane(nil))
 	Tabs.AddTab(tp)
 	Tabs.SetActive(len(Tabs.List) - 1)
 }
@@ -265,6 +156,56 @@ func (h *BufPane) TextFilterCmd(args []string) {
 	h.Buf.Insert(h.Cursor.Loc, bout.String())
 }
 
+// TabMoveCmd moves the current tab to a given index (starts at 1). The
+// displaced tabs are moved up.
+func (h *BufPane) TabMoveCmd(args []string) {
+	if len(args) <= 0 {
+		InfoBar.Error("Not enough arguments: provide an index, starting at 1")
+		return
+	}
+
+	if len(args[0]) <= 0 {
+		InfoBar.Error("Invalid argument: empty string")
+		return
+	}
+
+	num, err := strconv.Atoi(args[0])
+	if err != nil {
+		InfoBar.Error("Invalid argument: ", err)
+		return
+	}
+
+	// Preserve sign for relative move, if one exists
+	var shiftDirection byte
+	if strings.Contains("-+", string([]byte{args[0][0]})) {
+		shiftDirection = args[0][0]
+	}
+
+	// Relative positions -> absolute positions
+	idxFrom := Tabs.Active()
+	idxTo := 0
+	offset := util.Abs(num)
+	if shiftDirection == '-' {
+		idxTo = idxFrom - offset
+	} else if shiftDirection == '+' {
+		idxTo = idxFrom + offset
+	} else {
+		idxTo = offset - 1
+	}
+
+	// Restrain position to within the valid range
+	idxTo = util.Clamp(idxTo, 0, len(Tabs.List)-1)
+
+	activeTab := Tabs.List[idxFrom]
+	Tabs.RemoveTab(activeTab.ID())
+	Tabs.List = append(Tabs.List, nil)
+	copy(Tabs.List[idxTo+1:], Tabs.List[idxTo:])
+	Tabs.List[idxTo] = activeTab
+	Tabs.UpdateNames()
+	Tabs.SetActive(idxTo)
+	// InfoBar.Message(fmt.Sprintf("Moved tab from slot %d to %d", idxFrom+1, idxTo+1))
+}
+
 // TabSwitchCmd switches to a given tab either by name or by number
 func (h *BufPane) TabSwitchCmd(args []string) {
 	if len(args) > 0 {
@@ -344,11 +285,14 @@ func (h *BufPane) OpenCmd(args []string) {
 	if len(args) > 0 {
 		filename := args[0]
 		// the filename might or might not be quoted, so unquote first then join the strings.
-		args, err := shellwords.Split(filename)
+		args, err := shellquote.Split(filename)
 		if err != nil {
 			InfoBar.Error("Error parsing args ", err)
 			return
 		}
+		if len(args) == 0 {
+			return
+		}
 		filename = strings.Join(args, " ")
 
 		open := func() {
@@ -379,7 +323,7 @@ func (h *BufPane) OpenCmd(args []string) {
 // ToggleLogCmd toggles the log view
 func (h *BufPane) ToggleLogCmd(args []string) {
 	if h.Buf.Type != buffer.BTLog {
-		OpenLogBuf(h)
+		h.OpenLogBuf()
 	} else {
 		h.Quit()
 	}
@@ -396,7 +340,10 @@ func ReloadConfig() {
 	if err != nil {
 		screen.TermMessage(err)
 	}
-	config.InitGlobalSettings()
+	err = config.InitGlobalSettings()
+	if err != nil {
+		screen.TermMessage(err)
+	}
 	InitBindings()
 	InitCommands()
 
@@ -497,6 +444,7 @@ func (h *BufPane) HSplitCmd(args []string) {
 
 // EvalCmd evaluates a lua expression
 func (h *BufPane) EvalCmd(args []string) {
+	InfoBar.Error("Eval unsupported")
 }
 
 // NewTabCmd opens the given file in a new tab
@@ -523,37 +471,62 @@ func (h *BufPane) NewTabCmd(args []string) {
 }
 
 func SetGlobalOptionNative(option string, nativeValue interface{}) error {
-	config.GlobalSettings[option] = nativeValue
+	local := false
+	for _, s := range config.LocalSettings {
+		if s == option {
+			local = true
+			break
+		}
+	}
 
-	if option == "colorscheme" {
-		// LoadSyntaxFiles()
-		config.InitColorscheme()
-		for _, b := range buffer.OpenBuffers {
-			b.UpdateRules()
-		}
-	} else if option == "infobar" || option == "keymenu" {
-		Tabs.Resize()
-	} else if option == "mouse" {
-		if !nativeValue.(bool) {
-			screen.Screen.DisableMouse()
+	if !local {
+		config.GlobalSettings[option] = nativeValue
+		config.ModifiedSettings[option] = true
+
+		if option == "colorscheme" {
+			// LoadSyntaxFiles()
+			config.InitColorscheme()
+			for _, b := range buffer.OpenBuffers {
+				b.UpdateRules()
+			}
+		} else if option == "infobar" || option == "keymenu" {
+			Tabs.Resize()
+		} else if option == "mouse" {
+			if !nativeValue.(bool) {
+				screen.Screen.DisableMouse()
+			} else {
+				screen.Screen.EnableMouse()
+			}
+		} else if option == "autosave" {
+			if nativeValue.(float64) > 0 {
+				config.SetAutoTime(int(nativeValue.(float64)))
+				config.StartAutoSave()
+			} else {
+				config.SetAutoTime(0)
+			}
+		} else if option == "paste" {
+			screen.Screen.SetPaste(nativeValue.(bool))
+		} else if option == "clipboard" {
+			m := clipboard.SetMethod(nativeValue.(string))
+			err := clipboard.Initialize(m)
+			if err != nil {
+				return err
+			}
 		} else {
-			screen.Screen.EnableMouse()
-		}
-		// } else if option == "autosave" {
-		// 	if nativeValue.(float64) > 0 {
-		// 		config.SetAutoTime(int(nativeValue.(float64)))
-		// 		config.StartAutoSave()
-		// 	} else {
-		// 		config.SetAutoTime(0)
-		// 	}
-	} else {
-		for _, pl := range config.Plugins {
-			if option == pl.Name {
-				if nativeValue.(bool) && !pl.Loaded {
-					pl.Load()
-					pl.Call("init")
-				} else if !nativeValue.(bool) && pl.Loaded {
-					pl.Call("deinit")
+			for _, pl := range config.Plugins {
+				if option == pl.Name {
+					if nativeValue.(bool) && !pl.Loaded {
+						pl.Load()
+						_, err := pl.Call("init")
+						if err != nil && err != config.ErrNoSuchFunction {
+							screen.TermMessage(err)
+						}
+					} else if !nativeValue.(bool) && pl.Loaded {
+						_, err := pl.Call("deinit")
+						if err != nil && err != config.ErrNoSuchFunction {
+							screen.TermMessage(err)
+						}
+					}
 				}
 			}
 		}
@@ -563,7 +536,7 @@ func SetGlobalOptionNative(option string, nativeValue interface{}) error {
 		b.SetOptionNative(option, nativeValue)
 	}
 
-	return config.WriteSettings(config.ConfigDir + "/settings.json")
+	return config.WriteSettings(filepath.Join(config.ConfigDir, "settings.json"))
 }
 
 func SetGlobalOption(option, value string) error {
@@ -668,7 +641,12 @@ func (h *BufPane) ShowKeyCmd(args []string) {
 		return
 	}
 
-	if action, ok := config.Bindings[args[0]]; ok {
+	event, err := findEvent(args[0])
+	if err != nil {
+		InfoBar.Error(err)
+		return
+	}
+	if action, ok := config.Bindings["buffer"][event.Name()]; ok {
 		InfoBar.Message(action)
 	} else {
 		InfoBar.Message(args[0], " has no binding")
@@ -703,7 +681,7 @@ func (h *BufPane) UnbindCmd(args []string) {
 
 // RunCmd runs a shell command in the background
 func (h *BufPane) RunCmd(args []string) {
-	runf, err := shell.RunBackgroundShell(shellwords.Join(args...))
+	runf, err := shell.RunBackgroundShell(shellquote.Join(args...))
 	if err != nil {
 		InfoBar.Error(err)
 	} else {
@@ -739,19 +717,24 @@ func (h *BufPane) GotoCmd(args []string) {
 				InfoBar.Error(err)
 				return
 			}
+			if line < 0 {
+				line = h.Buf.LinesNum() + 1 + line
+			}
 			line = util.Clamp(line-1, 0, h.Buf.LinesNum()-1)
-			col = util.Clamp(col-1, 0, utf8.RuneCount(h.Buf.LineBytes(line)))
-			h.Cursor.GotoLoc(buffer.Loc{col, line})
+			col = util.Clamp(col-1, 0, util.CharacterCount(h.Buf.LineBytes(line)))
+			h.GotoLoc(buffer.Loc{col, line})
 		} else {
 			line, err := strconv.Atoi(args[0])
 			if err != nil {
 				InfoBar.Error(err)
 				return
 			}
+			if line < 0 {
+				line = h.Buf.LinesNum() + 1 + line
+			}
 			line = util.Clamp(line-1, 0, h.Buf.LinesNum()-1)
-			h.Cursor.GotoLoc(buffer.Loc{0, line})
+			h.GotoLoc(buffer.Loc{0, line})
 		}
-		h.Relocate()
 	}
 }
 
@@ -820,23 +803,23 @@ func (h *BufPane) ReplaceCmd(args []string) {
 
 	nreplaced := 0
 	start := h.Buf.Start()
-	// end := h.Buf.End()
-	// if h.Cursor.HasSelection() {
-	// 	start = h.Cursor.CurSelection[0]
-	// 	end = h.Cursor.CurSelection[1]
-	// }
+	end := h.Buf.End()
+	selection := h.Cursor.HasSelection()
+	if selection {
+		start = h.Cursor.CurSelection[0]
+		end = h.Cursor.CurSelection[1]
+	}
 	if all {
-		nreplaced = h.Buf.ReplaceRegex(start, h.Buf.End(), regex, replace)
+		nreplaced, _ = h.Buf.ReplaceRegex(start, end, regex, replace)
 	} else {
 		inRange := func(l buffer.Loc) bool {
-			return l.GreaterEqual(start) && l.LessEqual(h.Buf.End())
+			return l.GreaterEqual(start) && l.LessEqual(end)
 		}
 
-		searchLoc := start
-		searching := true
+		searchLoc := h.Cursor.Loc
 		var doReplacement func()
 		doReplacement = func() {
-			locs, found, err := h.Buf.FindNext(search, start, h.Buf.End(), searchLoc, true, !noRegex)
+			locs, found, err := h.Buf.FindNext(search, start, end, searchLoc, true, true)
 			if err != nil {
 				InfoBar.Error(err)
 				return
@@ -844,45 +827,58 @@ func (h *BufPane) ReplaceCmd(args []string) {
 			if !found || !inRange(locs[0]) || !inRange(locs[1]) {
 				h.Cursor.ResetSelection()
 				h.Buf.RelocateCursors()
+
 				return
 			}
 
 			h.Cursor.SetSelectionStart(locs[0])
 			h.Cursor.SetSelectionEnd(locs[1])
+			h.GotoLoc(locs[0])
+			h.Buf.LastSearch = search
+			h.Buf.LastSearchRegex = true
+			h.Buf.HighlightSearch = h.Buf.Settings["hlsearch"].(bool)
 
 			InfoBar.YNPrompt("Perform replacement (y,n,esc)", func(yes, canceled bool) {
 				if !canceled && yes {
-					h.Buf.Replace(locs[0], locs[1], replaceStr)
+					_, nrunes := h.Buf.ReplaceRegex(locs[0], locs[1], regex, replace)
 
 					searchLoc = locs[0]
-					searchLoc.X += utf8.RuneCount(replace)
+					searchLoc.X += nrunes + locs[0].Diff(locs[1], h.Buf)
+					if end.Y == locs[1].Y {
+						end = end.Move(nrunes, h.Buf)
+					}
 					h.Cursor.Loc = searchLoc
 					nreplaced++
 				} else if !canceled && !yes {
-					searchLoc = locs[0]
-					searchLoc.X += utf8.RuneCount(replace)
+					searchLoc = locs[1]
 				} else if canceled {
 					h.Cursor.ResetSelection()
 					h.Buf.RelocateCursors()
 					return
 				}
-				if searching {
-					doReplacement()
-				}
+				doReplacement()
 			})
 		}
 		doReplacement()
 	}
 
 	h.Buf.RelocateCursors()
+	h.Relocate()
 
+	var s string
 	if nreplaced > 1 {
-		InfoBar.Message("Replaced ", nreplaced, " occurrences of ", search)
+		s = fmt.Sprintf("Replaced %d occurrences of %s", nreplaced, search)
 	} else if nreplaced == 1 {
-		InfoBar.Message("Replaced ", nreplaced, " occurrence of ", search)
+		s = fmt.Sprintf("Replaced 1 occurrence of %s", search)
 	} else {
-		InfoBar.Message("Nothing matched ", search)
+		s = fmt.Sprintf("Nothing matched %s", search)
 	}
+
+	if selection {
+		s += " in selection"
+	}
+
+	InfoBar.Message(s)
 }
 
 // ReplaceAllCmd replaces search term all at once
@@ -893,7 +889,12 @@ func (h *BufPane) ReplaceAllCmd(args []string) {
 
 // TermCmd opens a terminal in the current view
 func (h *BufPane) TermCmd(args []string) {
-	ps := MainTab().Panes
+	ps := h.tab.Panes
+
+	if !TermEmuSupported {
+		InfoBar.Error("Terminal emulator not supported on this system")
+		return
+	}
 
 	if len(args) == 0 {
 		sh := os.Getenv("SHELL")
@@ -906,7 +907,11 @@ func (h *BufPane) TermCmd(args []string) {
 
 	term := func(i int, newtab bool) {
 		t := new(shell.Terminal)
-		t.Start(args, false, true, "", nil)
+		err := t.Start(args, false, true, nil, nil)
+		if err != nil {
+			InfoBar.Error(err)
+			return
+		}
 
 		id := h.ID()
 		if newtab {
@@ -918,7 +923,12 @@ func (h *BufPane) TermCmd(args []string) {
 		}
 
 		v := h.GetView()
-		MainTab().Panes[i] = NewTermPane(v.X, v.Y, v.Width, v.Height, t, id)
+		tp, err := NewTermPane(v.X, v.Y, v.Width, v.Height, t, id, MainTab())
+		if err != nil {
+			InfoBar.Error(err)
+			return
+		}
+		MainTab().Panes[i] = tp
 		MainTab().SetActive(i)
 	}
 
@@ -950,12 +960,16 @@ func (h *BufPane) TermCmd(args []string) {
 
 // HandleCommand handles input from the user
 func (h *BufPane) HandleCommand(input string) {
-	args, err := shellwords.Split(input)
+	args, err := shellquote.Split(input)
 	if err != nil {
 		InfoBar.Error("Error parsing args ", err)
 		return
 	}
 
+	if len(args) == 0 {
+		return
+	}
+
 	inputCmd := args[0]
 
 	if _, ok := commands[inputCmd]; !ok {

internal/action/defaults.go

@@ -0,0 +1,21 @@
+package action
+
+var termdefaults = map[string]string{
+	"<Ctrl-q><Ctrl-q>": "Exit",
+	"<Ctrl-e><Ctrl-e>": "CommandMode",
+	"<Ctrl-w><Ctrl-w>": "NextSplit",
+}
+
+// DefaultBindings returns a map containing micro's default keybindings
+func DefaultBindings(pane string) map[string]string {
+	switch pane {
+	case "command":
+		return infodefaults
+	case "buffer":
+		return bufdefaults
+	case "terminal":
+		return termdefaults
+	default:
+		return map[string]string{}
+	}
+}

internal/action/defaults_darwin.go

@@ -0,0 +1,182 @@
+package action
+
+var bufdefaults = map[string]string{
+	"Up":             "CursorUp",
+	"Down":           "CursorDown",
+	"Right":          "CursorRight",
+	"Left":           "CursorLeft",
+	"ShiftUp":        "SelectUp",
+	"ShiftDown":      "SelectDown",
+	"ShiftLeft":      "SelectLeft",
+	"ShiftRight":     "SelectRight",
+	"AltLeft":        "WordLeft",
+	"AltRight":       "WordRight",
+	"AltUp":          "MoveLinesUp",
+	"AltDown":        "MoveLinesDown",
+	"AltShiftRight":  "SelectWordRight",
+	"AltShiftLeft":   "SelectWordLeft",
+	"CtrlLeft":       "StartOfTextToggle",
+	"CtrlRight":      "EndOfLine",
+	"CtrlShiftLeft":  "SelectToStartOfTextToggle",
+	"ShiftHome":      "SelectToStartOfTextToggle",
+	"CtrlShiftRight": "SelectToEndOfLine",
+	"ShiftEnd":       "SelectToEndOfLine",
+	"CtrlUp":         "CursorStart",
+	"CtrlDown":       "CursorEnd",
+	"CtrlShiftUp":    "SelectToStart",
+	"CtrlShiftDown":  "SelectToEnd",
+	"Alt-{":          "ParagraphPrevious",
+	"Alt-}":          "ParagraphNext",
+	"Enter":          "InsertNewline",
+	"CtrlH":          "Backspace",
+	"Backspace":      "Backspace",
+	"OldBackspace":   "Backspace",
+	"Alt-CtrlH":      "DeleteWordLeft",
+	"Alt-Backspace":  "DeleteWordLeft",
+	"Tab":            "Autocomplete|IndentSelection|InsertTab",
+	"Backtab":        "CycleAutocompleteBack|OutdentSelection|OutdentLine",
+	"Ctrl-o":         "OpenFile",
+	"Ctrl-s":         "Save",
+	"Ctrl-f":         "Find",
+	"Alt-F":          "FindLiteral",
+	"Ctrl-n":         "FindNext",
+	"Ctrl-p":         "FindPrevious",
+	"Alt-[":          "DiffPrevious|CursorStart",
+	"Alt-]":          "DiffNext|CursorEnd",
+	"Ctrl-z":         "Undo",
+	"Ctrl-y":         "Redo",
+	"Ctrl-c":         "CopyLine|Copy",
+	"Ctrl-x":         "Cut",
+	"Ctrl-k":         "CutLine",
+	"Ctrl-d":         "DuplicateLine",
+	"Ctrl-v":         "Paste",
+	"Ctrl-a":         "SelectAll",
+	"Ctrl-t":         "AddTab",
+	"Alt-,":          "PreviousTab",
+	"Alt-.":          "NextTab",
+	"Home":           "StartOfTextToggle",
+	"End":            "EndOfLine",
+	"CtrlHome":       "CursorStart",
+	"CtrlEnd":        "CursorEnd",
+	"PageUp":         "CursorPageUp",
+	"PageDown":       "CursorPageDown",
+	"CtrlPageUp":     "PreviousTab",
+	"CtrlPageDown":   "NextTab",
+	"Ctrl-g":         "ToggleHelp",
+	"Alt-g":          "ToggleKeyMenu",
+	"Ctrl-r":         "ToggleRuler",
+	"Ctrl-l":         "command-edit:goto ",
+	"Delete":         "Delete",
+	"Ctrl-b":         "ShellMode",
+	"Ctrl-q":         "Quit",
+	"Ctrl-e":         "CommandMode",
+	"Ctrl-w":         "NextSplit",
+	"Ctrl-u":         "ToggleMacro",
+	"Ctrl-j":         "PlayMacro",
+	"Insert":         "ToggleOverwriteMode",
+
+	// Emacs-style keybindings
+	"Alt-f": "WordRight",
+	"Alt-b": "WordLeft",
+	"Alt-a": "StartOfText",
+	"Alt-e": "EndOfLine",
+	// "Alt-p": "CursorUp",
+	// "Alt-n": "CursorDown",
+
+	// Integration with file managers
+	"F2":  "Save",
+	"F3":  "Find",
+	"F4":  "Quit",
+	"F7":  "Find",
+	"F10": "Quit",
+	"Esc": "Escape,Deselect,ClearInfo,RemoveAllMultiCursors,UnhighlightSearch",
+
+	// Mouse bindings
+	"MouseWheelUp":   "ScrollUp",
+	"MouseWheelDown": "ScrollDown",
+	"MouseLeft":      "MousePress",
+	"MouseMiddle":    "PastePrimary",
+	"Ctrl-MouseLeft": "MouseMultiCursor",
+
+	"Alt-n":        "SpawnMultiCursor",
+	"AltShiftUp":   "SpawnMultiCursorUp",
+	"AltShiftDown": "SpawnMultiCursorDown",
+	"Alt-m":        "SpawnMultiCursorSelect",
+	"Alt-p":        "RemoveMultiCursor",
+	"Alt-c":        "RemoveAllMultiCursors",
+	"Alt-x":        "SkipMultiCursor",
+}
+
+var infodefaults = map[string]string{
+	"Up":             "HistoryUp",
+	"Down":           "HistoryDown",
+	"Right":          "CursorRight",
+	"Left":           "CursorLeft",
+	"ShiftUp":        "SelectUp",
+	"ShiftDown":      "SelectDown",
+	"ShiftLeft":      "SelectLeft",
+	"ShiftRight":     "SelectRight",
+	"AltLeft":        "WordLeft",
+	"AltRight":       "WordRight",
+	"AltUp":          "CursorStart",
+	"AltDown":        "CursorEnd",
+	"AltShiftRight":  "SelectWordRight",
+	"AltShiftLeft":   "SelectWordLeft",
+	"CtrlLeft":       "StartOfTextToggle",
+	"CtrlRight":      "EndOfLine",
+	"CtrlShiftLeft":  "SelectToStartOfTextToggle",
+	"ShiftHome":      "SelectToStartOfTextToggle",
+	"CtrlShiftRight": "SelectToEndOfLine",
+	"ShiftEnd":       "SelectToEndOfLine",
+	"CtrlUp":         "CursorStart",
+	"CtrlDown":       "CursorEnd",
+	"CtrlShiftUp":    "SelectToStart",
+	"CtrlShiftDown":  "SelectToEnd",
+	"Enter":          "ExecuteCommand",
+	"CtrlH":          "Backspace",
+	"Backspace":      "Backspace",
+	"OldBackspace":   "Backspace",
+	"Alt-CtrlH":      "DeleteWordLeft",
+	"Alt-Backspace":  "DeleteWordLeft",
+	"Tab":            "CommandComplete",
+	"Backtab":        "CycleAutocompleteBack",
+	"Ctrl-z":         "Undo",
+	"Ctrl-y":         "Redo",
+	"Ctrl-c":         "CopyLine|Copy",
+	"Ctrl-x":         "Cut",
+	"Ctrl-k":         "CutLine",
+	"Ctrl-v":         "Paste",
+	"Home":           "StartOfTextToggle",
+	"End":            "EndOfLine",
+	"CtrlHome":       "CursorStart",
+	"CtrlEnd":        "CursorEnd",
+	"Delete":         "Delete",
+	"Ctrl-q":         "AbortCommand",
+	"Ctrl-e":         "EndOfLine",
+	"Ctrl-a":         "StartOfLine",
+	"Ctrl-w":         "DeleteWordLeft",
+	"Insert":         "ToggleOverwriteMode",
+	"Ctrl-b":         "WordLeft",
+	"Ctrl-f":         "WordRight",
+	"Ctrl-d":         "DeleteWordLeft",
+	"Ctrl-m":         "ExecuteCommand",
+	"Ctrl-n":         "HistoryDown",
+	"Ctrl-p":         "HistoryUp",
+	"Ctrl-u":         "SelectToStart",
+
+	// Emacs-style keybindings
+	"Alt-f": "WordRight",
+	"Alt-b": "WordLeft",
+	"Alt-a": "StartOfText",
+	"Alt-e": "EndOfLine",
+
+	// Integration with file managers
+	"F10": "AbortCommand",
+	"Esc": "AbortCommand",
+
+	// Mouse bindings
+	"MouseWheelUp":   "HistoryUp",
+	"MouseWheelDown": "HistoryDown",
+	"MouseLeft":      "MousePress",
+	"MouseMiddle":    "PastePrimary",
+}

internal/action/defaults_other.go

@@ -0,0 +1,185 @@
+//go:build !darwin
+// +build !darwin
+
+package action
+
+var bufdefaults = map[string]string{
+	"Up":             "CursorUp",
+	"Down":           "CursorDown",
+	"Right":          "CursorRight",
+	"Left":           "CursorLeft",
+	"ShiftUp":        "SelectUp",
+	"ShiftDown":      "SelectDown",
+	"ShiftLeft":      "SelectLeft",
+	"ShiftRight":     "SelectRight",
+	"CtrlLeft":       "WordLeft",
+	"CtrlRight":      "WordRight",
+	"AltUp":          "MoveLinesUp",
+	"AltDown":        "MoveLinesDown",
+	"CtrlShiftRight": "SelectWordRight",
+	"CtrlShiftLeft":  "SelectWordLeft",
+	"AltLeft":        "StartOfTextToggle",
+	"AltRight":       "EndOfLine",
+	"AltShiftLeft":   "SelectToStartOfTextToggle",
+	"ShiftHome":      "SelectToStartOfTextToggle",
+	"AltShiftRight":  "SelectToEndOfLine",
+	"ShiftEnd":       "SelectToEndOfLine",
+	"CtrlUp":         "CursorStart",
+	"CtrlDown":       "CursorEnd",
+	"CtrlShiftUp":    "SelectToStart",
+	"CtrlShiftDown":  "SelectToEnd",
+	"Alt-{":          "ParagraphPrevious",
+	"Alt-}":          "ParagraphNext",
+	"Enter":          "InsertNewline",
+	"CtrlH":          "Backspace",
+	"Backspace":      "Backspace",
+	"OldBackspace":   "Backspace",
+	"Alt-CtrlH":      "DeleteWordLeft",
+	"Alt-Backspace":  "DeleteWordLeft",
+	"Tab":            "Autocomplete|IndentSelection|InsertTab",
+	"Backtab":        "CycleAutocompleteBack|OutdentSelection|OutdentLine",
+	"Ctrl-o":         "OpenFile",
+	"Ctrl-s":         "Save",
+	"Ctrl-f":         "Find",
+	"Alt-F":          "FindLiteral",
+	"Ctrl-n":         "FindNext",
+	"Ctrl-p":         "FindPrevious",
+	"Alt-[":          "DiffPrevious|CursorStart",
+	"Alt-]":          "DiffNext|CursorEnd",
+	"Ctrl-z":         "Undo",
+	"Ctrl-y":         "Redo",
+	"Ctrl-c":         "CopyLine|Copy",
+	"Ctrl-x":         "Cut",
+	"Ctrl-k":         "CutLine",
+	"Ctrl-d":         "DuplicateLine",
+	"Ctrl-v":         "Paste",
+	"Ctrl-a":         "SelectAll",
+	"Ctrl-t":         "AddTab",
+	"Alt-,":          "PreviousTab",
+	"Alt-.":          "NextTab",
+	"Home":           "StartOfTextToggle",
+	"End":            "EndOfLine",
+	"CtrlHome":       "CursorStart",
+	"CtrlEnd":        "CursorEnd",
+	"PageUp":         "CursorPageUp",
+	"PageDown":       "CursorPageDown",
+	"CtrlPageUp":     "PreviousTab",
+	"CtrlPageDown":   "NextTab",
+	"Ctrl-g":         "ToggleHelp",
+	"Alt-g":          "ToggleKeyMenu",
+	"Ctrl-r":         "ToggleRuler",
+	"Ctrl-l":         "command-edit:goto ",
+	"Delete":         "Delete",
+	"Ctrl-b":         "ShellMode",
+	"Ctrl-q":         "Quit",
+	"Ctrl-e":         "CommandMode",
+	"Ctrl-w":         "NextSplit",
+	"Ctrl-u":         "ToggleMacro",
+	"Ctrl-j":         "PlayMacro",
+	"Insert":         "ToggleOverwriteMode",
+
+	// Emacs-style keybindings
+	"Alt-f": "WordRight",
+	"Alt-b": "WordLeft",
+	"Alt-a": "StartOfText",
+	"Alt-e": "EndOfLine",
+	// "Alt-p": "CursorUp",
+	// "Alt-n": "CursorDown",
+
+	// Integration with file managers
+	"F2":  "Save",
+	"F3":  "Find",
+	"F4":  "Quit",
+	"F7":  "Find",
+	"F10": "Quit",
+	"Esc": "Escape,Deselect,ClearInfo,RemoveAllMultiCursors,UnhighlightSearch",
+
+	// Mouse bindings
+	"MouseWheelUp":   "ScrollUp",
+	"MouseWheelDown": "ScrollDown",
+	"MouseLeft":      "MousePress",
+	"MouseMiddle":    "PastePrimary",
+	"Ctrl-MouseLeft": "MouseMultiCursor",
+
+	"Alt-n":        "SpawnMultiCursor",
+	"Alt-m":        "SpawnMultiCursorSelect",
+	"AltShiftUp":   "SpawnMultiCursorUp",
+	"AltShiftDown": "SpawnMultiCursorDown",
+	"Alt-p":        "RemoveMultiCursor",
+	"Alt-c":        "RemoveAllMultiCursors",
+	"Alt-x":        "SkipMultiCursor",
+}
+
+var infodefaults = map[string]string{
+	"Up":             "HistoryUp",
+	"Down":           "HistoryDown",
+	"Right":          "CursorRight",
+	"Left":           "CursorLeft",
+	"ShiftUp":        "SelectUp",
+	"ShiftDown":      "SelectDown",
+	"ShiftLeft":      "SelectLeft",
+	"ShiftRight":     "SelectRight",
+	"AltLeft":        "StartOfTextToggle",
+	"AltRight":       "EndOfLine",
+	"AltUp":          "CursorStart",
+	"AltDown":        "CursorEnd",
+	"AltShiftRight":  "SelectWordRight",
+	"AltShiftLeft":   "SelectWordLeft",
+	"CtrlLeft":       "WordLeft",
+	"CtrlRight":      "WordRight",
+	"CtrlShiftLeft":  "SelectToStartOfTextToggle",
+	"ShiftHome":      "SelectToStartOfTextToggle",
+	"CtrlShiftRight": "SelectToEndOfLine",
+	"ShiftEnd":       "SelectToEndOfLine",
+	"CtrlUp":         "CursorStart",
+	"CtrlDown":       "CursorEnd",
+	"CtrlShiftUp":    "SelectToStart",
+	"CtrlShiftDown":  "SelectToEnd",
+	"Enter":          "ExecuteCommand",
+	"CtrlH":          "Backspace",
+	"Backspace":      "Backspace",
+	"OldBackspace":   "Backspace",
+	"Alt-CtrlH":      "DeleteWordLeft",
+	"Alt-Backspace":  "DeleteWordLeft",
+	"Tab":            "CommandComplete",
+	"Backtab":        "CycleAutocompleteBack",
+	"Ctrl-z":         "Undo",
+	"Ctrl-y":         "Redo",
+	"Ctrl-c":         "CopyLine|Copy",
+	"Ctrl-x":         "Cut",
+	"Ctrl-k":         "CutLine",
+	"Ctrl-v":         "Paste",
+	"Home":           "StartOfTextToggle",
+	"End":            "EndOfLine",
+	"CtrlHome":       "CursorStart",
+	"CtrlEnd":        "CursorEnd",
+	"Delete":         "Delete",
+	"Ctrl-q":         "AbortCommand",
+	"Ctrl-e":         "EndOfLine",
+	"Ctrl-a":         "StartOfLine",
+	"Ctrl-w":         "DeleteWordLeft",
+	"Insert":         "ToggleOverwriteMode",
+	"Ctrl-b":         "WordLeft",
+	"Ctrl-f":         "WordRight",
+	"Ctrl-d":         "DeleteWordLeft",
+	"Ctrl-m":         "ExecuteCommand",
+	"Ctrl-n":         "HistoryDown",
+	"Ctrl-p":         "HistoryUp",
+	"Ctrl-u":         "SelectToStart",
+
+	// Emacs-style keybindings
+	"Alt-f": "WordRight",
+	"Alt-b": "WordLeft",
+	"Alt-a": "StartOfText",
+	"Alt-e": "EndOfLine",
+
+	// Integration with file managers
+	"F10": "AbortCommand",
+	"Esc": "AbortCommand",
+
+	// Mouse bindings
+	"MouseWheelUp":   "HistoryUp",
+	"MouseWheelDown": "HistoryDown",
+	"MouseLeft":      "MousePress",
+	"MouseMiddle":    "PastePrimary",
+}

internal/action/events.go

@@ -1,10 +1,17 @@
 package action
 
 import (
-	"github.com/zyedidia/tcell"
+	"bytes"
+	"errors"
+	"fmt"
+	"strings"
+
+	"github.com/zyedidia/tcell/v2"
 )
 
-type Event interface{}
+type Event interface {
+	Name() string
+}
 
 // RawEvent is simply an escape code
 // We allow users to directly bind escape codes
@@ -13,6 +20,10 @@ type RawEvent struct {
 	esc string
 }
 
+func (r RawEvent) Name() string {
+	return r.esc
+}
+
 // KeyEvent is a key event containing a key code,
 // some possible modifiers (alt, ctrl, etc...) and
 // a rune if it was simply a character press
@@ -22,6 +33,71 @@ type KeyEvent struct {
 	code tcell.Key
 	mod  tcell.ModMask
 	r    rune
+	any  bool
+}
+
+func metaToAlt(mod tcell.ModMask) tcell.ModMask {
+	if mod&tcell.ModMeta != 0 {
+		mod &= ^tcell.ModMeta
+		mod |= tcell.ModAlt
+	}
+	return mod
+}
+
+func (k KeyEvent) Name() string {
+	if k.any {
+		return "<any>"
+	}
+	s := ""
+	m := []string{}
+	if k.mod&tcell.ModShift != 0 {
+		m = append(m, "Shift")
+	}
+	if k.mod&tcell.ModAlt != 0 {
+		m = append(m, "Alt")
+	}
+	if k.mod&tcell.ModMeta != 0 {
+		m = append(m, "Meta")
+	}
+	if k.mod&tcell.ModCtrl != 0 {
+		m = append(m, "Ctrl")
+	}
+
+	ok := false
+	if s, ok = tcell.KeyNames[k.code]; !ok {
+		if k.code == tcell.KeyRune {
+			s = string(k.r)
+		} else {
+			s = fmt.Sprintf("Key[%d,%d]", k.code, int(k.r))
+		}
+	}
+	if len(m) != 0 {
+		if k.mod&tcell.ModCtrl != 0 && strings.HasPrefix(s, "Ctrl-") {
+			s = s[5:]
+			if len(s) == 1 {
+				s = strings.ToLower(s)
+			}
+		}
+		return fmt.Sprintf("%s-%s", strings.Join(m, "-"), s)
+	}
+	return s
+}
+
+// A KeySequence defines a list of consecutive
+// events. All events in the sequence must be KeyEvents
+// or MouseEvents.
+type KeySequenceEvent struct {
+	keys []Event
+}
+
+func (k KeySequenceEvent) Name() string {
+	buf := bytes.Buffer{}
+	for _, e := range k.keys {
+		buf.WriteByte('<')
+		buf.WriteString(e.Name())
+		buf.WriteByte('>')
+	}
+	return buf.String()
 }
 
 // MouseEvent is a mouse event with a mouse button and
@@ -31,8 +107,54 @@ type MouseEvent struct {
 	mod tcell.ModMask
 }
 
-type KeyAction func(Handler) bool
-type MouseAction func(Handler, tcell.EventMouse) bool
+func (m MouseEvent) Name() string {
+	mod := ""
+	if m.mod&tcell.ModShift != 0 {
+		mod = "Shift-"
+	}
+	if m.mod&tcell.ModAlt != 0 {
+		mod = "Alt-"
+	}
+	if m.mod&tcell.ModMeta != 0 {
+		mod = "Meta-"
+	}
+	if m.mod&tcell.ModCtrl != 0 {
+		mod = "Ctrl-"
+	}
+
+	for k, v := range mouseEvents {
+		if v == m.btn {
+			return fmt.Sprintf("%s%s", mod, k)
+		}
+	}
+	return ""
+}
+
+// ConstructEvent takes a tcell event and returns a micro
+// event. Note that tcell events can't express certain
+// micro events such as key sequences. This function is
+// mostly used for debugging/raw panes or constructing
+// intermediate micro events while parsing a sequence.
+func ConstructEvent(event tcell.Event) (Event, error) {
+	switch e := event.(type) {
+	case *tcell.EventKey:
+		return KeyEvent{
+			code: e.Key(),
+			mod:  metaToAlt(e.Modifiers()),
+			r:    e.Rune(),
+		}, nil
+	case *tcell.EventRaw:
+		return RawEvent{
+			esc: e.EscSeq(),
+		}, nil
+	case *tcell.EventMouse:
+		return MouseEvent{
+			btn: e.Buttons(),
+			mod: metaToAlt(e.Modifiers()),
+		}, nil
+	}
+	return nil, errors.New("No micro event equivalent")
+}
 
 // A Handler will take a tcell event and execute it
 // appropriately

internal/action/globals.go

@@ -1,42 +1,36 @@
 package action
 
-import "github.com/zyedidia/micro/internal/buffer"
+import "github.com/zyedidia/micro/v2/internal/buffer"
 
+// InfoBar is the global info bar.
 var InfoBar *InfoPane
+
+// LogBufPane is a global log buffer.
 var LogBufPane *BufPane
 
+// InitGlobals initializes the log buffer and the info bar
 func InitGlobals() {
 	InfoBar = NewInfoBar()
 	buffer.LogBuf = buffer.NewBufferFromString("", "Log", buffer.BTLog)
 }
 
+// GetInfoBar returns the infobar pane
 func GetInfoBar() *InfoPane {
 	return InfoBar
 }
 
+// WriteLog writes a string to the log buffer
 func WriteLog(s string) {
 	buffer.WriteLog(s)
 	if LogBufPane != nil {
 		LogBufPane.CursorEnd()
-		v := LogBufPane.GetView()
-		endY := buffer.LogBuf.End().Y
-
-		if endY > v.StartLine+v.Height {
-			v.StartLine = buffer.LogBuf.End().Y - v.Height + 2
-			LogBufPane.SetView(v)
-		}
 	}
 }
 
-func OpenLogBuf(h *BufPane) {
+// OpenLogBuf opens the log buffer from the current bufpane
+// If the current bufpane is a log buffer nothing happens,
+// otherwise the log buffer is opened in a horizontal split
+func (h *BufPane) OpenLogBuf() {
 	LogBufPane = h.HSplitBuf(buffer.LogBuf)
 	LogBufPane.CursorEnd()
-
-	v := LogBufPane.GetView()
-	endY := buffer.LogBuf.End().Y
-
-	if endY > v.StartLine+v.Height {
-		v.StartLine = buffer.LogBuf.End().Y - v.Height + 2
-		LogBufPane.SetView(v)
-	}
 }

internal/action/infocomplete.go

@@ -5,9 +5,9 @@ import (
 	"sort"
 	"strings"
 
-	"github.com/zyedidia/micro/internal/buffer"
-	"github.com/zyedidia/micro/internal/config"
-	"github.com/zyedidia/micro/internal/util"
+	"github.com/zyedidia/micro/v2/internal/buffer"
+	"github.com/zyedidia/micro/v2/internal/config"
+	"github.com/zyedidia/micro/v2/internal/util"
 )
 
 // This file is meant (for now) for autocompletion in command mode, not
@@ -186,6 +186,16 @@ func OptionValueComplete(b *buffer.Buffer) ([]string, []string) {
 			if strings.HasPrefix("doas", input) {
 				suggestions = append(suggestions, "doas")
 			}
+		case "clipboard":
+			if strings.HasPrefix("external", input) {
+				suggestions = append(suggestions, "external")
+			}
+			if strings.HasPrefix("internal", input) {
+				suggestions = append(suggestions, "internal")
+			}
+			if strings.HasPrefix("terminal", input) {
+				suggestions = append(suggestions, "terminal")
+			}
 		}
 	}
 	sort.Strings(suggestions)
@@ -197,7 +207,7 @@ func OptionValueComplete(b *buffer.Buffer) ([]string, []string) {
 	return completions, suggestions
 }
 
-// OptionComplete autocompletes options
+// PluginCmdComplete autocompletes the plugin command
 func PluginCmdComplete(b *buffer.Buffer) ([]string, []string) {
 	c := b.GetActiveCursor()
 	input, argstart := buffer.GetArg(b)
@@ -253,51 +263,28 @@ func PluginComplete(b *buffer.Buffer) ([]string, []string) {
 	return completions, suggestions
 }
 
-// // MakeCompletion registers a function from a plugin for autocomplete commands
-// func MakeCompletion(function string) Completion {
-// 	pluginCompletions = append(pluginCompletions, LuaFunctionComplete(function))
-// 	return Completion(-len(pluginCompletions))
-// }
+// PluginNameComplete completes with the names of loaded plugins
+// func PluginNameComplete(b *buffer.Buffer) ([]string, []string) {
+// 	c := b.GetActiveCursor()
+// 	input, argstart := buffer.GetArg(b)
 //
-// // PluginComplete autocompletes from plugin function
-// func PluginComplete(complete Completion, input string) (chosen string, suggestions []string) {
-// 	idx := int(-complete) - 1
-//
-// 	if len(pluginCompletions) <= idx {
-// 		return "", nil
-// 	}
-// 	suggestions = pluginCompletions[idx](input)
-//
-// 	if len(suggestions) == 1 {
-// 		chosen = suggestions[0]
-// 	}
-// 	return
-// }
-//
-// // PluginCmdComplete completes with possible choices for the `> plugin` command
-// func PluginCmdComplete(input string) (chosen string, suggestions []string) {
-// 	for _, cmd := range []string{"install", "remove", "search", "update", "list"} {
-// 		if strings.HasPrefix(cmd, input) {
-// 			suggestions = append(suggestions, cmd)
-// 		}
-// 	}
-//
-// 	if len(suggestions) == 1 {
-// 		chosen = suggestions[0]
-// 	}
-// 	return chosen, suggestions
-// }
-//
-// // PluginnameComplete completes with the names of loaded plugins
-// func PluginNameComplete(input string) (chosen string, suggestions []string) {
-// 	for _, pp := range GetAllPluginPackages() {
+// 	var suggestions []string
+// 	for _, pp := range config.GetAllPluginPackages(nil) {
 // 		if strings.HasPrefix(pp.Name, input) {
 // 			suggestions = append(suggestions, pp.Name)
 // 		}
 // 	}
 //
-// 	if len(suggestions) == 1 {
-// 		chosen = suggestions[0]
+// 	sort.Strings(suggestions)
+// 	completions := make([]string, len(suggestions))
+// 	for i := range suggestions {
+// 		completions[i] = util.SliceEndStr(suggestions[i], c.X-argstart)
 // 	}
-// 	return chosen, suggestions
+// 	return completions, suggestions
+// }
+
+// // MakeCompletion registers a function from a plugin for autocomplete commands
+// func MakeCompletion(function string) Completion {
+// 	pluginCompletions = append(pluginCompletions, LuaFunctionComplete(function))
+// 	return Completion(-len(pluginCompletions))
 // }

internal/action/infopane.go

@@ -2,25 +2,70 @@ package action
 
 import (
 	"bytes"
-	"strings"
 
-	"github.com/zyedidia/micro/internal/display"
-	"github.com/zyedidia/micro/internal/info"
-	"github.com/zyedidia/micro/internal/util"
-	"github.com/zyedidia/tcell"
+	"github.com/zyedidia/micro/v2/internal/buffer"
+	"github.com/zyedidia/micro/v2/internal/config"
+	"github.com/zyedidia/micro/v2/internal/display"
+	"github.com/zyedidia/micro/v2/internal/info"
+	"github.com/zyedidia/micro/v2/internal/util"
+	"github.com/zyedidia/tcell/v2"
 )
 
 type InfoKeyAction func(*InfoPane)
 
+var InfoBindings *KeyTree
+var InfoBufBindings *KeyTree
+
+func init() {
+	InfoBindings = NewKeyTree()
+	InfoBufBindings = NewKeyTree()
+}
+
+func InfoMapEvent(k Event, action string) {
+	config.Bindings["command"][k.Name()] = action
+
+	switch e := k.(type) {
+	case KeyEvent, KeySequenceEvent, RawEvent:
+		infoMapKey(e, action)
+	case MouseEvent:
+		infoMapMouse(e, action)
+	}
+}
+
+func infoMapKey(k Event, action string) {
+	if f, ok := InfoKeyActions[action]; ok {
+		InfoBindings.RegisterKeyBinding(k, InfoKeyActionGeneral(f))
+	} else if f, ok := BufKeyActions[action]; ok {
+		InfoBufBindings.RegisterKeyBinding(k, BufKeyActionGeneral(f))
+	}
+}
+
+func infoMapMouse(k MouseEvent, action string) {
+	// TODO: map mouse
+	if f, ok := BufMouseActions[action]; ok {
+		InfoBufBindings.RegisterMouseBinding(k, BufMouseActionGeneral(f))
+	} else {
+		infoMapKey(k, action)
+	}
+}
+
+func InfoKeyActionGeneral(a InfoKeyAction) PaneKeyAction {
+	return func(p Pane) bool {
+		a(p.(*InfoPane))
+		return true
+	}
+}
+
 type InfoPane struct {
 	*BufPane
 	*info.InfoBuf
 }
 
-func NewInfoPane(ib *info.InfoBuf, w display.BWindow) *InfoPane {
+func NewInfoPane(ib *info.InfoBuf, w display.BWindow, tab *Tab) *InfoPane {
 	ip := new(InfoPane)
 	ip.InfoBuf = ib
-	ip.BufPane = NewBufPane(ib.Buffer, w)
+	ip.BufPane = NewBufPane(ib.Buffer, w, tab)
+	ip.BufPane.bindings = InfoBufBindings
 
 	return ip
 }
@@ -28,7 +73,7 @@ func NewInfoPane(ib *info.InfoBuf, w display.BWindow) *InfoPane {
 func NewInfoBar() *InfoPane {
 	ib := info.NewBuffer()
 	w := display.NewInfoWindow(ib)
-	return NewInfoPane(ib, w)
+	return NewInfoPane(ib, w, nil)
 }
 
 func (h *InfoPane) Close() {
@@ -41,17 +86,17 @@ func (h *InfoPane) HandleEvent(event tcell.Event) {
 	case *tcell.EventKey:
 		ke := KeyEvent{
 			code: e.Key(),
-			mod:  e.Modifiers(),
+			mod:  metaToAlt(e.Modifiers()),
 			r:    e.Rune(),
 		}
 
 		done := h.DoKeyEvent(ke)
 		hasYN := h.HasYN
 		if e.Key() == tcell.KeyRune && hasYN {
-			if e.Rune() == 'y' && hasYN {
+			if (e.Rune() == 'y' || e.Rune() == 'Y') && hasYN {
 				h.YNResp = true
 				h.DonePrompt(false)
-			} else if e.Rune() == 'n' && hasYN {
+			} else if (e.Rune() == 'n' || e.Rune() == 'N') && hasYN {
 				h.YNResp = false
 				h.DonePrompt(false)
 			}
@@ -63,115 +108,71 @@ func (h *InfoPane) HandleEvent(event tcell.Event) {
 		if done && h.HasPrompt && !hasYN {
 			resp := string(h.LineBytes(0))
 			hist := h.History[h.PromptType]
-			hist[h.HistoryNum] = resp
+			if resp != hist[h.HistoryNum] {
+				h.HistoryNum = len(hist) - 1
+				hist[h.HistoryNum] = resp
+				h.HistorySearch = false
+			}
 			if h.EventCallback != nil {
 				h.EventCallback(resp)
 			}
 		}
-	case *tcell.EventMouse:
+	default:
 		h.BufPane.HandleEvent(event)
 	}
 }
 
+// DoKeyEvent executes a key event for the command bar, doing any overridden actions
 func (h *InfoPane) DoKeyEvent(e KeyEvent) bool {
-	done := false
-	if action, ok := BufKeyBindings[e]; ok {
-		estr := BufKeyStrings[e]
-		for _, s := range InfoNones {
-			if s == estr {
-				return false
-			}
-		}
-		for s, a := range InfoOverrides {
-			// TODO this is a hack and really we should have support
-			// for having binding overrides for different buffers
-			if strings.Contains(estr, s) {
-				done = true
-				a(h)
-				break
-			}
-		}
-		if !done {
-			done = action(h.BufPane)
+	action, more := InfoBindings.NextEvent(e, nil)
+	if action != nil && !more {
+		action(h)
+		InfoBindings.ResetEvents()
+
+		return true
+	} else if action == nil && !more {
+		InfoBindings.ResetEvents()
+		// return false //TODO:?
+	}
+
+	if !more {
+		action, more = InfoBufBindings.NextEvent(e, nil)
+		if action != nil && !more {
+			done := action(h.BufPane)
+			InfoBufBindings.ResetEvents()
+			return done
+		} else if action == nil && !more {
+			InfoBufBindings.ResetEvents()
 		}
 	}
-	return done
+
+	return more
 }
 
-// InfoNones is a list of actions that should have no effect when executed
-// by an infohandler
-var InfoNones = []string{
-	"Save",
-	"SaveAll",
-	"SaveAs",
-	"Find",
-	"FindNext",
-	"FindPrevious",
-	"Center",
-	"DuplicateLine",
-	"MoveLinesUp",
-	"MoveLinesDown",
-	"OpenFile",
-	"Start",
-	"End",
-	"PageUp",
-	"PageDown",
-	"SelectPageUp",
-	"SelectPageDown",
-	"HalfPageUp",
-	"HalfPageDown",
-	"ToggleHelp",
-	"ToggleKeyMenu",
-	"ToggleRuler",
-	"JumpLine",
-	"ClearStatus",
-	"ShellMode",
-	"CommandMode",
-	"AddTab",
-	"PreviousTab",
-	"NextTab",
-	"NextSplit",
-	"PreviousSplit",
-	"Unsplit",
-	"VSplit",
-	"HSplit",
-	"ToggleMacro",
-	"PlayMacro",
-	"Suspend",
-	"ScrollUp",
-	"ScrollDown",
-	"SpawnMultiCursor",
-	"SpawnMultiCursorSelect",
-	"RemoveMultiCursor",
-	"RemoveAllMultiCursors",
-	"SkipMultiCursor",
-}
-
-// InfoOverrides is the list of actions which have been overridden
-// by the infohandler
-var InfoOverrides = map[string]InfoKeyAction{
-	"CursorUp":      (*InfoPane).CursorUp,
-	"CursorDown":    (*InfoPane).CursorDown,
-	"InsertNewline": (*InfoPane).InsertNewline,
-	"Autocomplete":  (*InfoPane).Autocomplete,
-	"OutdentLine":   (*InfoPane).CycleBack,
-	"Escape":        (*InfoPane).Escape,
-	"Quit":          (*InfoPane).Quit,
-	"QuitAll":       (*InfoPane).QuitAll,
-}
-
-// CursorUp cycles history up
-func (h *InfoPane) CursorUp() {
+// HistoryUp cycles history up
+func (h *InfoPane) HistoryUp() {
 	h.UpHistory(h.History[h.PromptType])
 }
 
-// CursorDown cycles history down
-func (h *InfoPane) CursorDown() {
+// HistoryDown cycles history down
+func (h *InfoPane) HistoryDown() {
 	h.DownHistory(h.History[h.PromptType])
 }
 
+// HistorySearchUp fetches the previous history item beginning with the text
+// in the infobuffer before cursor
+func (h *InfoPane) HistorySearchUp() {
+	h.SearchUpHistory(h.History[h.PromptType])
+}
+
+// HistorySearchDown fetches the next history item beginning with the text
+// in the infobuffer before cursor
+func (h *InfoPane) HistorySearchDown() {
+	h.SearchDownHistory(h.History[h.PromptType])
+}
+
 // Autocomplete begins autocompletion
-func (h *InfoPane) Autocomplete() {
+func (h *InfoPane) CommandComplete() {
 	b := h.Buf
 	if b.HasSuggestions {
 		b.CycleAutocomplete(true)
@@ -185,42 +186,39 @@ func (h *InfoPane) Autocomplete() {
 	args := bytes.Split(l, []byte{' '})
 	cmd := string(args[0])
 
-	if len(args) == 1 {
-		b.Autocomplete(CommandComplete)
-	} else {
-		if action, ok := commands[cmd]; ok {
+	if h.PromptType == "Command" {
+		if len(args) == 1 {
+			b.Autocomplete(CommandComplete)
+		} else if action, ok := commands[cmd]; ok {
 			if action.completer != nil {
 				b.Autocomplete(action.completer)
 			}
 		}
+	} else {
+		// by default use filename autocompletion
+		b.Autocomplete(buffer.FileComplete)
 	}
 }
 
-// CycleBack cycles back in the autocomplete suggestion list
-func (h *InfoPane) CycleBack() {
-	if h.Buf.HasSuggestions {
-		h.Buf.CycleAutocomplete(false)
-	}
-}
-
-// InsertNewline completes the prompt
-func (h *InfoPane) InsertNewline() {
+// ExecuteCommand completes the prompt
+func (h *InfoPane) ExecuteCommand() {
 	if !h.HasYN {
 		h.DonePrompt(false)
 	}
 }
 
-// Quit cancels the prompt
-func (h *InfoPane) Quit() {
+// AbortCommand cancels the prompt
+func (h *InfoPane) AbortCommand() {
 	h.DonePrompt(true)
 }
 
-// QuitAll cancels the prompt
-func (h *InfoPane) QuitAll() {
-	h.DonePrompt(true)
-}
-
-// Escape cancels the prompt
-func (h *InfoPane) Escape() {
-	h.DonePrompt(true)
+// InfoKeyActions contains the list of all possible key actions the infopane could execute
+var InfoKeyActions = map[string]InfoKeyAction{
+	"HistoryUp":         (*InfoPane).HistoryUp,
+	"HistoryDown":       (*InfoPane).HistoryDown,
+	"HistorySearchUp":   (*InfoPane).HistorySearchUp,
+	"HistorySearchDown": (*InfoPane).HistorySearchDown,
+	"CommandComplete":   (*InfoPane).CommandComplete,
+	"ExecuteCommand":    (*InfoPane).ExecuteCommand,
+	"AbortCommand":      (*InfoPane).AbortCommand,
 }

internal/action/keytree.go

@@ -0,0 +1,261 @@
+package action
+
+import (
+	"bytes"
+
+	"github.com/zyedidia/tcell/v2"
+)
+
+type PaneKeyAction func(Pane) bool
+type PaneMouseAction func(Pane, *tcell.EventMouse) bool
+type PaneKeyAnyAction func(Pane, []KeyEvent) bool
+
+// A KeyTreeNode stores a single node in the KeyTree (trie). The
+// children are stored as a map, and any node may store a list of
+// actions (the list will be nil if no actions correspond to a certain
+// node)
+type KeyTreeNode struct {
+	children map[Event]*KeyTreeNode
+
+	// Only one of these actions may be active in the current
+	// mode, and only one will be returned. If multiple actions
+	// are active, it is undefined which one will be the one
+	// returned.
+	actions []TreeAction
+}
+
+func NewKeyTreeNode() *KeyTreeNode {
+	n := new(KeyTreeNode)
+	n.children = make(map[Event]*KeyTreeNode)
+	n.actions = []TreeAction{}
+	return n
+}
+
+// A TreeAction stores an action, and a set of mode constraints for
+// the action to be active.
+type TreeAction struct {
+	// only one of these can be non-nil
+	action PaneKeyAction
+	any    PaneKeyAnyAction
+	mouse  PaneMouseAction
+
+	modes []ModeConstraint
+}
+
+// A KeyTree is a data structure for storing keybindings. It maps
+// key events to actions, and maintains a set of currently enabled
+// modes, which affects the action that is returned for a key event.
+// The tree acts like a Trie for Events to handle sequence events.
+type KeyTree struct {
+	root  *KeyTreeNode
+	modes map[string]bool
+
+	cursor KeyTreeCursor
+}
+
+// A KeyTreeCursor keeps track of the current location within the
+// tree, and stores any information from previous events that may
+// be needed to execute the action (values of wildcard events or
+// mouse events)
+type KeyTreeCursor struct {
+	node *KeyTreeNode
+
+	recordedEvents []Event
+	wildcards      []KeyEvent
+	mouseInfo      *tcell.EventMouse
+}
+
+// MakeClosure uses the information stored in a key tree cursor to construct
+// a PaneKeyAction from a TreeAction (which may have a PaneKeyAction, PaneMouseAction,
+// or AnyAction)
+func (k *KeyTreeCursor) MakeClosure(a TreeAction) PaneKeyAction {
+	if a.action != nil {
+		return a.action
+	} else if a.any != nil {
+		return func(p Pane) bool {
+			return a.any(p, k.wildcards)
+		}
+	} else if a.mouse != nil {
+		return func(p Pane) bool {
+			return a.mouse(p, k.mouseInfo)
+		}
+	}
+
+	return nil
+}
+
+// NewKeyTree allocates and returns an empty key tree
+func NewKeyTree() *KeyTree {
+	root := NewKeyTreeNode()
+	tree := new(KeyTree)
+
+	tree.root = root
+	tree.modes = make(map[string]bool)
+	tree.cursor = KeyTreeCursor{
+		node:      root,
+		wildcards: []KeyEvent{},
+		mouseInfo: nil,
+	}
+
+	return tree
+}
+
+// A ModeConstraint specifies that an action can only be executed
+// while a certain mode is enabled or disabled.
+type ModeConstraint struct {
+	mode     string
+	disabled bool
+}
+
+// RegisterKeyBinding registers a PaneKeyAction with an Event.
+func (k *KeyTree) RegisterKeyBinding(e Event, a PaneKeyAction) {
+	k.registerBinding(e, TreeAction{
+		action: a,
+		any:    nil,
+		mouse:  nil,
+		modes:  nil,
+	})
+}
+
+// RegisterKeyAnyBinding registers a PaneKeyAnyAction with an Event.
+// The event should contain an "any" event.
+func (k *KeyTree) RegisterKeyAnyBinding(e Event, a PaneKeyAnyAction) {
+	k.registerBinding(e, TreeAction{
+		action: nil,
+		any:    a,
+		mouse:  nil,
+		modes:  nil,
+	})
+}
+
+// RegisterMouseBinding registers a PaneMouseAction with an Event.
+// The event should contain a mouse event.
+func (k *KeyTree) RegisterMouseBinding(e Event, a PaneMouseAction) {
+	k.registerBinding(e, TreeAction{
+		action: nil,
+		any:    nil,
+		mouse:  a,
+		modes:  nil,
+	})
+}
+
+func (k *KeyTree) registerBinding(e Event, a TreeAction) {
+	switch ev := e.(type) {
+	case KeyEvent, MouseEvent, RawEvent:
+		newNode, ok := k.root.children[e]
+		if !ok {
+			newNode = NewKeyTreeNode()
+			k.root.children[e] = newNode
+		}
+		// newNode.actions = append(newNode.actions, a)
+		newNode.actions = []TreeAction{a}
+	case KeySequenceEvent:
+		n := k.root
+		for _, key := range ev.keys {
+			newNode, ok := n.children[key]
+			if !ok {
+				newNode = NewKeyTreeNode()
+				n.children[key] = newNode
+			}
+
+			n = newNode
+		}
+		// n.actions = append(n.actions, a)
+		n.actions = []TreeAction{a}
+	}
+}
+
+// NextEvent returns the action for the current sequence where e is the next
+// event. Even if the action was registered as a PaneKeyAnyAction or PaneMouseAction,
+// it will be returned as a PaneKeyAction closure where the appropriate arguments
+// have been provided.
+// If no action is associated with the given Event, or mode constraints are not
+// met for that action, nil is returned.
+// A boolean is returned to indicate if there is a conflict with this action. A
+// conflict occurs when there is an active action for this event but there are
+// bindings associated with further sequences starting with this event. The
+// calling function can decide what to do about the conflict (e.g. use a
+// timeout).
+func (k *KeyTree) NextEvent(e Event, mouse *tcell.EventMouse) (PaneKeyAction, bool) {
+	n := k.cursor.node
+	c, ok := n.children[e]
+
+	if !ok {
+		return nil, false
+	}
+
+	more := len(c.children) > 0
+
+	k.cursor.node = c
+
+	k.cursor.recordedEvents = append(k.cursor.recordedEvents, e)
+
+	switch ev := e.(type) {
+	case KeyEvent:
+		if ev.any {
+			k.cursor.wildcards = append(k.cursor.wildcards, ev)
+		}
+	case MouseEvent:
+		k.cursor.mouseInfo = mouse
+	}
+
+	if len(c.actions) > 0 {
+		// check if actions are active
+		for _, a := range c.actions {
+			active := true
+			for _, mc := range a.modes {
+				// if any mode constraint is not met, the action is not active
+				hasMode := k.modes[mc.mode]
+				if hasMode != mc.disabled {
+					active = false
+				}
+			}
+
+			if active {
+				// the first active action to be found is returned
+				return k.cursor.MakeClosure(a), more
+			}
+		}
+	}
+
+	return nil, more
+}
+
+// ResetEvents sets the current sequence back to the initial value.
+func (k *KeyTree) ResetEvents() {
+	k.cursor.node = k.root
+	k.cursor.wildcards = []KeyEvent{}
+	k.cursor.recordedEvents = []Event{}
+	k.cursor.mouseInfo = nil
+}
+
+// RecordedEventsStr returns the list of recorded events as a string
+func (k *KeyTree) RecordedEventsStr() string {
+	buf := &bytes.Buffer{}
+	for _, e := range k.cursor.recordedEvents {
+		buf.WriteString(e.Name())
+	}
+	return buf.String()
+}
+
+// DeleteBinding removes any currently active actions associated with the
+// given event.
+func (k *KeyTree) DeleteBinding(e Event) {
+
+}
+
+// DeleteAllBindings removes all actions associated with the given event,
+// regardless of whether they are active or not.
+func (k *KeyTree) DeleteAllBindings(e Event) {
+
+}
+
+// SetMode enables or disabled a given mode
+func (k *KeyTree) SetMode(mode string, en bool) {
+	k.modes[mode] = en
+}
+
+// HasMode returns if the given mode is currently active
+func (k *KeyTree) HasMode(mode string) bool {
+	return k.modes[mode]
+}

internal/action/pane.go

@@ -1,9 +1,10 @@
 package action
 
 import (
-	"github.com/zyedidia/micro/internal/display"
+	"github.com/zyedidia/micro/v2/internal/display"
 )
 
+// A Pane is a general interface for a window in the editor.
 type Pane interface {
 	Handler
 	display.Window
@@ -11,4 +12,6 @@ type Pane interface {
 	SetID(i uint64)
 	Name() string
 	Close()
+	SetTab(t *Tab)
+	Tab() *Tab
 }

internal/action/rawpane.go

@@ -4,26 +4,26 @@ import (
 	"fmt"
 	"reflect"
 
-	"github.com/zyedidia/micro/internal/buffer"
-	"github.com/zyedidia/micro/internal/display"
-	"github.com/zyedidia/tcell"
+	"github.com/zyedidia/micro/v2/internal/buffer"
+	"github.com/zyedidia/micro/v2/internal/display"
+	"github.com/zyedidia/tcell/v2"
 )
 
 type RawPane struct {
 	*BufPane
 }
 
-func NewRawPaneFromWin(b *buffer.Buffer, win display.BWindow) *RawPane {
+func NewRawPaneFromWin(b *buffer.Buffer, win display.BWindow, tab *Tab) *RawPane {
 	rh := new(RawPane)
-	rh.BufPane = NewBufPane(b, win)
+	rh.BufPane = NewBufPane(b, win, tab)
 
 	return rh
 }
 
-func NewRawPane() *RawPane {
+func NewRawPane(tab *Tab) *RawPane {
 	b := buffer.NewBufferFromString("", "", buffer.BTRaw)
 	w := display.NewBufWindow(0, 0, 0, 0, b)
-	return NewRawPaneFromWin(b, w)
+	return NewRawPaneFromWin(b, w, tab)
 }
 
 func (h *RawPane) HandleEvent(event tcell.Event) {
@@ -35,6 +35,13 @@ func (h *RawPane) HandleEvent(event tcell.Event) {
 	}
 
 	h.Buf.Insert(h.Cursor.Loc, reflect.TypeOf(event).String()[7:])
+
+	e, err := ConstructEvent(event)
+	if err == nil {
+		h.Buf.Insert(h.Cursor.Loc, fmt.Sprintf(": %s", e.Name()))
+	}
+
 	h.Buf.Insert(h.Cursor.Loc, fmt.Sprintf(": %q\n", event.EscSeq()))
+
 	h.Relocate()
 }

internal/action/tab.go

@@ -1,12 +1,15 @@
 package action
 
 import (
-	"github.com/zyedidia/micro/internal/buffer"
-	"github.com/zyedidia/micro/internal/config"
-	"github.com/zyedidia/micro/internal/display"
-	"github.com/zyedidia/micro/internal/screen"
-	"github.com/zyedidia/micro/internal/views"
-	"github.com/zyedidia/tcell"
+	luar "layeh.com/gopher-luar"
+
+	"github.com/zyedidia/micro/v2/internal/buffer"
+	"github.com/zyedidia/micro/v2/internal/config"
+	"github.com/zyedidia/micro/v2/internal/display"
+	ulua "github.com/zyedidia/micro/v2/internal/lua"
+	"github.com/zyedidia/micro/v2/internal/screen"
+	"github.com/zyedidia/micro/v2/internal/views"
+	"github.com/zyedidia/tcell/v2"
 )
 
 // The TabList is a list of tabs and a window to display the tab bar
@@ -91,6 +94,7 @@ func (t *TabList) Resize() {
 		t.List[0].Node.Resize(w, h-iOffset)
 		t.List[0].Resize()
 	}
+	t.TabWindow.Resize(w, h)
 }
 
 // HandleEvent checks for a resize event or a mouse event on the tab bar
@@ -103,6 +107,13 @@ func (t *TabList) HandleEvent(event tcell.Event) {
 		mx, my := e.Position()
 		switch e.Buttons() {
 		case tcell.Button1:
+			if my == t.Y && mx == 0 {
+				t.Scroll(-4)
+				return
+			} else if my == t.Y && mx == t.Width-1 {
+				t.Scroll(4)
+				return
+			}
 			if len(t.List) > 1 {
 				ind := t.LocFromVisual(buffer.Loc{mx, my})
 				if ind != -1 {
@@ -140,7 +151,19 @@ func (t *TabList) Display() {
 var Tabs *TabList
 
 func InitTabs(bufs []*buffer.Buffer) {
-	Tabs = NewTabList(bufs)
+	multiopen := config.GetGlobalOption("multiopen").(string)
+	if multiopen == "tab" {
+		Tabs = NewTabList(bufs)
+	} else {
+		Tabs = NewTabList(bufs[:1])
+		for _, b := range bufs[1:] {
+			if multiopen == "vsplit" {
+				MainTab().CurPane().VSplitBuf(b)
+			} else {  // default hsplit
+				MainTab().CurPane().HSplitBuf(b)
+			}
+		}
+	}
 }
 
 func MainTab() *Tab {
@@ -158,6 +181,8 @@ type Tab struct {
 	active int
 
 	resizing *views.Node // node currently being resized
+	// captures whether the mouse is released
+	release bool
 }
 
 // NewTabFromBuffer creates a new tab from the given buffer
@@ -165,8 +190,9 @@ func NewTabFromBuffer(x, y, width, height int, b *buffer.Buffer) *Tab {
 	t := new(Tab)
 	t.Node = views.NewRoot(x, y, width, height)
 	t.UIWindow = display.NewUIWindow(t.Node)
+	t.release = true
 
-	e := NewBufPaneFromBuf(b)
+	e := NewBufPaneFromBuf(b, t)
 	e.SetID(t.ID())
 
 	t.Panes = append(t.Panes, e)
@@ -177,7 +203,8 @@ func NewTabFromPane(x, y, width, height int, pane Pane) *Tab {
 	t := new(Tab)
 	t.Node = views.NewRoot(x, y, width, height)
 	t.UIWindow = display.NewUIWindow(t.Node)
-
+	t.release = true
+	pane.SetTab(t)
 	pane.SetID(t.ID())
 
 	t.Panes = append(t.Panes, pane)
@@ -195,7 +222,8 @@ func (t *Tab) HandleEvent(event tcell.Event) {
 		mx, my := e.Position()
 		switch e.Buttons() {
 		case tcell.Button1:
-			resizeID := t.GetMouseSplitID(buffer.Loc{mx, my})
+			wasReleased := t.release
+			t.release = false
 			if t.resizing != nil {
 				var size int
 				if t.resizing.Kind == views.STVert {
@@ -208,21 +236,24 @@ func (t *Tab) HandleEvent(event tcell.Event) {
 				return
 			}
 
-			if resizeID != 0 {
-				t.resizing = t.GetNode(uint64(resizeID))
-				return
-			}
+			if wasReleased {
+				t.resizing = t.GetMouseSplitNode(buffer.Loc{mx, my})
+				if t.resizing != nil {
+					return
+				}
 
-			for i, p := range t.Panes {
-				v := p.GetView()
-				inpane := mx >= v.X && mx < v.X+v.Width && my >= v.Y && my < v.Y+v.Height
-				if inpane {
-					t.SetActive(i)
-					break
+				for i, p := range t.Panes {
+					v := p.GetView()
+					inpane := mx >= v.X && mx < v.X+v.Width && my >= v.Y && my < v.Y+v.Height
+					if inpane {
+						t.SetActive(i)
+						break
+					}
 				}
 			}
 		case tcell.ButtonNone:
 			t.resizing = nil
+			t.release = true
 		default:
 			for _, p := range t.Panes {
 				v := p.GetView()
@@ -248,6 +279,11 @@ func (t *Tab) SetActive(i int) {
 			p.SetActive(false)
 		}
 	}
+
+	err := config.RunPluginFn("onSetActive", luar.New(ulua.L, MainTab().CurPane()))
+	if err != nil {
+		screen.TermMessage(err)
+	}
 }
 
 // GetPane returns the pane with the given split index
@@ -283,6 +319,10 @@ func (t *Tab) Resize() {
 }
 
 // CurPane returns the currently active pane
-func (t *Tab) CurPane() Pane {
-	return t.Panes[t.active]
+func (t *Tab) CurPane() *BufPane {
+	p, ok := t.Panes[t.active].(*BufPane)
+	if !ok {
+		return nil
+	}
+	return p
 }

internal/action/terminal_supported.go

@@ -3,26 +3,42 @@
 package action
 
 import (
-	"github.com/zyedidia/micro/internal/shell"
-	"github.com/zyedidia/micro/pkg/shellwords"
+	shellquote "github.com/kballard/go-shellquote"
+	"github.com/zyedidia/micro/v2/internal/shell"
 )
 
+// TermEmuSupported is a constant that marks if the terminal emulator is supported
 const TermEmuSupported = true
 
-func RunTermEmulator(h *BufPane, input string, wait bool, getOutput bool, callback string, userargs []interface{}) error {
-	args, err := shellwords.Split(input)
+// RunTermEmulator starts a terminal emulator from a bufpane with the given input (command)
+// if wait is true it will wait for the user to exit by pressing enter once the executable has terminated
+// if getOutput is true it will redirect the stdout of the process to a pipe which will be passed to the
+// callback which is a function that takes a string and a list of optional user arguments
+func RunTermEmulator(h *BufPane, input string, wait bool, getOutput bool, callback func(out string, userargs []interface{}), userargs []interface{}) error {
+	args, err := shellquote.Split(input)
 	if err != nil {
 		return err
 	}
+	if len(args) == 0 {
+		return nil
+	}
 
 	t := new(shell.Terminal)
-	t.Start(args, getOutput, wait, callback, userargs)
+	err = t.Start(args, getOutput, wait, callback, userargs)
+	if err != nil {
+		return err
+	}
 
 	h.AddTab()
 	id := MainTab().Panes[0].ID()
 
 	v := h.GetView()
-	MainTab().Panes[0] = NewTermPane(v.X, v.Y, v.Width, v.Height, t, id)
+
+	tp, err := NewTermPane(v.X, v.Y, v.Width, v.Height, t, id, MainTab())
+	if err != nil {
+		return err
+	}
+	MainTab().Panes[0] = tp
 	MainTab().SetActive(0)
 
 	return nil

internal/action/terminal_unsupported.go

@@ -4,8 +4,10 @@ package action
 
 import "errors"
 
+// TermEmuSupported is a constant that marks if the terminal emulator is supported
 const TermEmuSupported = false
 
-func RunTermEmulator(input string, wait bool, getOutput bool, callback string, userargs []interface{}) error {
+// RunTermEmulator returns an error for unsupported systems (non-unix systems
+func RunTermEmulator(input string, wait bool, getOutput bool, callback func(out string, userargs []interface{}), userargs []interface{}) error {
 	return errors.New("Unsupported operating system")
 }

internal/action/termpane.go

@@ -1,31 +1,76 @@
 package action
 
 import (
+	"errors"
 	"runtime"
 
-	"github.com/zyedidia/clipboard"
-	"github.com/zyedidia/micro/internal/display"
-	"github.com/zyedidia/micro/internal/screen"
-	"github.com/zyedidia/micro/internal/shell"
-	"github.com/zyedidia/tcell"
+	"github.com/zyedidia/micro/v2/internal/clipboard"
+	"github.com/zyedidia/micro/v2/internal/config"
+	"github.com/zyedidia/micro/v2/internal/display"
+	"github.com/zyedidia/micro/v2/internal/screen"
+	"github.com/zyedidia/micro/v2/internal/shell"
+	"github.com/zyedidia/tcell/v2"
 	"github.com/zyedidia/terminal"
 )
 
+type TermKeyAction func(*TermPane)
+
+var TermBindings *KeyTree
+
+func init() {
+	TermBindings = NewKeyTree()
+}
+
+func TermKeyActionGeneral(a TermKeyAction) PaneKeyAction {
+	return func(p Pane) bool {
+		a(p.(*TermPane))
+		return true
+	}
+}
+
+func TermMapEvent(k Event, action string) {
+	config.Bindings["terminal"][k.Name()] = action
+
+	switch e := k.(type) {
+	case KeyEvent, KeySequenceEvent, RawEvent:
+		termMapKey(e, action)
+	case MouseEvent:
+		termMapMouse(e, action)
+	}
+}
+
+func termMapKey(k Event, action string) {
+	if f, ok := TermKeyActions[action]; ok {
+		TermBindings.RegisterKeyBinding(k, TermKeyActionGeneral(f))
+	}
+}
+
+func termMapMouse(k MouseEvent, action string) {
+	// TODO: map mouse
+	termMapKey(k, action)
+}
+
 type TermPane struct {
 	*shell.Terminal
 	display.Window
 
 	mouseReleased bool
 	id            uint64
+	tab           *Tab
 }
 
-func NewTermPane(x, y, w, h int, t *shell.Terminal, id uint64) *TermPane {
+func NewTermPane(x, y, w, h int, t *shell.Terminal, id uint64, tab *Tab) (*TermPane, error) {
+	if !TermEmuSupported {
+		return nil, errors.New("Terminal emulator is not supported on this system")
+	}
+
 	th := new(TermPane)
 	th.Terminal = t
 	th.id = id
 	th.mouseReleased = true
 	th.Window = display.NewTermWindow(x, y, w, h, t)
-	return th
+	th.tab = tab
+	return th, nil
 }
 
 func (t *TermPane) ID() uint64 {
@@ -36,8 +81,17 @@ func (t *TermPane) SetID(i uint64) {
 	t.id = i
 }
 
+func (t *TermPane) SetTab(tab *Tab) {
+	t.tab = tab
+}
+
+func (t *TermPane) Tab() *Tab {
+	return t.tab
+}
+
 func (t *TermPane) Close() {}
 
+// Quit closes this termpane
 func (t *TermPane) Quit() {
 	t.Close()
 	if len(MainTab().Panes) > 1 {
@@ -51,6 +105,7 @@ func (t *TermPane) Quit() {
 	}
 }
 
+// Unsplit removes this split
 func (t *TermPane) Unsplit() {
 	n := MainTab().GetNode(t.id)
 	n.Unsplit()
@@ -66,6 +121,26 @@ func (t *TermPane) Unsplit() {
 // copy-paste
 func (t *TermPane) HandleEvent(event tcell.Event) {
 	if e, ok := event.(*tcell.EventKey); ok {
+		ke := KeyEvent{
+			code: e.Key(),
+			mod:  metaToAlt(e.Modifiers()),
+			r:    e.Rune(),
+		}
+		action, more := TermBindings.NextEvent(ke, nil)
+
+		if !more {
+			if action != nil {
+				action(t)
+				TermBindings.ResetEvents()
+				return
+			}
+			TermBindings.ResetEvents()
+		}
+
+		if more {
+			return
+		}
+
 		if t.Status == shell.TTDone {
 			switch e.Key() {
 			case tcell.KeyEscape, tcell.KeyCtrlQ, tcell.KeyEnter:
@@ -75,13 +150,17 @@ func (t *TermPane) HandleEvent(event tcell.Event) {
 			}
 		}
 		if e.Key() == tcell.KeyCtrlC && t.HasSelection() {
-			clipboard.WriteAll(t.GetSelection(t.GetView().Width), "clipboard")
+			clipboard.Write(t.GetSelection(t.GetView().Width), clipboard.ClipboardReg)
 			InfoBar.Message("Copied selection to clipboard")
 		} else if t.Status != shell.TTDone {
 			t.WriteString(event.EscSeq())
 		}
+	} else if _, ok := event.(*tcell.EventPaste); ok {
+		if t.Status != shell.TTDone {
+			t.WriteString(event.EscSeq())
+		}
 	} else if e, ok := event.(*tcell.EventMouse); e != nil && (!ok || t.State.Mode(terminal.ModeMouseMask)) {
-		t.WriteString(event.EscSeq())
+		// t.WriteString(event.EscSeq())
 	} else if e != nil {
 		x, y := e.Position()
 		v := t.GetView()
@@ -115,6 +194,41 @@ func (t *TermPane) HandleEvent(event tcell.Event) {
 	}
 }
 
+// Exit closes the termpane
+func (t *TermPane) Exit() {
+	t.Terminal.Close()
+	t.Quit()
+}
+
+// CommandMode opens the termpane's command mode
+func (t *TermPane) CommandMode() {
+	InfoBar.Prompt("> ", "", "TerminalCommand", nil, func(resp string, canceled bool) {
+		if !canceled {
+			t.HandleCommand(resp)
+		}
+	})
+}
+
+// NextSplit moves to the next split
+func (t *TermPane) NextSplit() {
+	a := t.tab.active
+	if a < len(t.tab.Panes)-1 {
+		a++
+	} else {
+		a = 0
+	}
+
+	t.tab.SetActive(a)
+}
+
+// HandleCommand handles a command for the term pane
 func (t *TermPane) HandleCommand(input string) {
 	InfoBar.Error("Commands are unsupported in term for now")
 }
+
+// TermKeyActions contains the list of all possible key actions the termpane could execute
+var TermKeyActions = map[string]TermKeyAction{
+	"Exit":        (*TermPane).Exit,
+	"CommandMode": (*TermPane).CommandMode,
+	"NextSplit":   (*TermPane).NextSplit,
+}

internal/buffer/autocomplete.go

@@ -6,9 +6,8 @@ import (
 	"os"
 	"sort"
 	"strings"
-	"unicode/utf8"
 
-	"github.com/zyedidia/micro/internal/util"
+	"github.com/zyedidia/micro/v2/internal/util"
 )
 
 // A Completer is a function that takes a buffer and returns info
@@ -54,9 +53,7 @@ func (b *Buffer) CycleAutocomplete(forward bool) {
 	start := c.Loc
 	end := c.Loc
 	if prevSuggestion < len(b.Suggestions) && prevSuggestion >= 0 {
-		start = end.Move(-utf8.RuneCountInString(b.Completions[prevSuggestion]), b)
-	} else {
-		// end = start.Move(1, b)
+		start = end.Move(-util.CharacterCountInString(b.Completions[prevSuggestion]), b)
 	}
 
 	b.Replace(start, end, b.Completions[b.CurSuggestion])
@@ -72,17 +69,17 @@ func GetWord(b *Buffer) ([]byte, int) {
 	l := b.LineBytes(c.Y)
 	l = util.SliceStart(l, c.X)
 
-	if c.X == 0 || util.IsWhitespace(b.RuneAt(c.Loc)) {
+	if c.X == 0 || util.IsWhitespace(b.RuneAt(c.Loc.Move(-1, b))) {
 		return []byte{}, -1
 	}
 
-	if util.IsNonAlphaNumeric(b.RuneAt(c.Loc)) {
+	if util.IsNonAlphaNumeric(b.RuneAt(c.Loc.Move(-1, b))) {
 		return []byte{}, c.X
 	}
 
 	args := bytes.FieldsFunc(l, util.IsNonAlphaNumeric)
 	input := args[len(args)-1]
-	return input, c.X - utf8.RuneCount(input)
+	return input, c.X - util.CharacterCount(input)
 }
 
 // GetArg gets the most recent word (separated by ' ' only)
@@ -98,7 +95,7 @@ func GetArg(b *Buffer) (string, int) {
 		if i == len(args)-1 {
 			break
 		}
-		argstart += utf8.RuneCount(a) + 1
+		argstart += util.CharacterCount(a) + 1
 	}
 
 	return input, argstart
@@ -162,7 +159,7 @@ func BufferComplete(b *Buffer) ([]string, []string) {
 		return []string{}, []string{}
 	}
 
-	inputLen := utf8.RuneCount(input)
+	inputLen := util.CharacterCount(input)
 
 	suggestionsSet := make(map[string]struct{})
 
@@ -171,7 +168,7 @@ func BufferComplete(b *Buffer) ([]string, []string) {
 		l := b.LineBytes(i)
 		words := bytes.FieldsFunc(l, util.IsNonAlphaNumeric)
 		for _, w := range words {
-			if bytes.HasPrefix(w, input) && utf8.RuneCount(w) > inputLen {
+			if bytes.HasPrefix(w, input) && util.CharacterCount(w) > inputLen {
 				strw := string(w)
 				if _, ok := suggestionsSet[strw]; !ok {
 					suggestionsSet[strw] = struct{}{}
@@ -184,7 +181,7 @@ func BufferComplete(b *Buffer) ([]string, []string) {
 		l := b.LineBytes(i)
 		words := bytes.FieldsFunc(l, util.IsNonAlphaNumeric)
 		for _, w := range words {
-			if bytes.HasPrefix(w, input) && utf8.RuneCount(w) > inputLen {
+			if bytes.HasPrefix(w, input) && util.CharacterCount(w) > inputLen {
 				strw := string(w)
 				if _, ok := suggestionsSet[strw]; !ok {
 					suggestionsSet[strw] = struct{}{}

internal/buffer/backup.go

@@ -4,11 +4,13 @@ import (
 	"fmt"
 	"io"
 	"os"
+	"path/filepath"
+	"sync/atomic"
 	"time"
 
-	"github.com/zyedidia/micro/internal/config"
-	"github.com/zyedidia/micro/internal/screen"
-	"github.com/zyedidia/micro/internal/util"
+	"github.com/zyedidia/micro/v2/internal/config"
+	"github.com/zyedidia/micro/v2/internal/screen"
+	"github.com/zyedidia/micro/v2/internal/util"
 	"golang.org/x/text/encoding"
 )
 
@@ -24,32 +26,60 @@ The backup was created on %s, and the file is
   When the buffer is closed, the backup will be removed.
 * 'ignore' will ignore the backup, discarding its changes. The backup file
   will be removed.
+* 'abort' will abort the open operation, and instead open an empty buffer.
 
-Options: [r]ecover, [i]gnore: `
+Options: [r]ecover, [i]gnore, [a]bort: `
+
+var backupRequestChan chan *Buffer
+
+func backupThread() {
+	for {
+		time.Sleep(time.Second * 8)
+
+		for len(backupRequestChan) > 0 {
+			b := <-backupRequestChan
+			bfini := atomic.LoadInt32(&(b.fini)) != 0
+			if !bfini {
+				b.Backup()
+			}
+		}
+	}
+}
+
+func init() {
+	backupRequestChan = make(chan *Buffer, 10)
+
+	go backupThread()
+}
+
+func (b *Buffer) RequestBackup() {
+	if !b.requestedBackup {
+		select {
+		case backupRequestChan <- b:
+		default:
+			// channel is full
+		}
+		b.requestedBackup = true
+	}
+}
 
 // Backup saves the current buffer to ConfigDir/backups
-func (b *Buffer) Backup(checkTime bool) error {
-	if !b.Settings["backup"].(bool) || b.Path == "" {
+func (b *Buffer) Backup() error {
+	if !b.Settings["backup"].(bool) || b.Path == "" || b.Type != BTDefault {
 		return nil
 	}
 
-	if checkTime {
-		sub := time.Now().Sub(b.lastbackup)
-		if sub < time.Duration(backupTime)*time.Millisecond {
-			return nil
-		}
+	backupdir, err := util.ReplaceHome(b.Settings["backupdir"].(string))
+	if backupdir == "" || err != nil {
+		backupdir = filepath.Join(config.ConfigDir, "backups")
 	}
-
-	b.lastbackup = time.Now()
-
-	backupdir := config.ConfigDir + "/backups/"
 	if _, err := os.Stat(backupdir); os.IsNotExist(err) {
 		os.Mkdir(backupdir, os.ModePerm)
 	}
 
-	name := backupdir + util.EscapePath(b.AbsPath)
+	name := filepath.Join(backupdir, util.EscapePath(b.AbsPath))
 
-	err := overwriteFile(name, encoding.Nop, func(file io.Writer) (e error) {
+	err = overwriteFile(name, encoding.Nop, func(file io.Writer) (e error) {
 		if len(b.lines) == 0 {
 			return
 		}
@@ -71,45 +101,49 @@ func (b *Buffer) Backup(checkTime bool) error {
 			}
 		}
 		return
-	})
+	}, false)
+
+	b.requestedBackup = false
 
 	return err
 }
 
 // RemoveBackup removes any backup file associated with this buffer
 func (b *Buffer) RemoveBackup() {
-	if !b.Settings["backup"].(bool) || b.Path == "" {
+	if !b.Settings["backup"].(bool) || b.Settings["permbackup"].(bool) || b.Path == "" || b.Type != BTDefault {
 		return
 	}
-	f := config.ConfigDir + "/backups/" + util.EscapePath(b.AbsPath)
+	f := filepath.Join(config.ConfigDir, "backups", util.EscapePath(b.AbsPath))
 	os.Remove(f)
 }
 
 // ApplyBackup applies the corresponding backup file to this buffer (if one exists)
 // Returns true if a backup was applied
-func (b *Buffer) ApplyBackup(fsize int64) bool {
-	if b.Settings["backup"].(bool) && len(b.Path) > 0 {
-		backupfile := config.ConfigDir + "/backups/" + util.EscapePath(b.AbsPath)
+func (b *Buffer) ApplyBackup(fsize int64) (bool, bool) {
+	if b.Settings["backup"].(bool) && !b.Settings["permbackup"].(bool) && len(b.Path) > 0 && b.Type == BTDefault {
+		backupfile := filepath.Join(config.ConfigDir, "backups", util.EscapePath(b.AbsPath))
 		if info, err := os.Stat(backupfile); err == nil {
 			backup, err := os.Open(backupfile)
 			if err == nil {
 				defer backup.Close()
 				t := info.ModTime()
 				msg := fmt.Sprintf(backupMsg, t.Format("Mon Jan _2 at 15:04, 2006"), util.EscapePath(b.AbsPath))
-				choice := screen.TermPrompt(msg, []string{"r", "i", "recover", "ignore"}, true)
+				choice := screen.TermPrompt(msg, []string{"r", "i", "a", "recover", "ignore", "abort"}, true)
 
-				if choice%2 == 0 {
+				if choice%3 == 0 {
 					// recover
 					b.LineArray = NewLineArray(uint64(fsize), FFAuto, backup)
 					b.isModified = true
-					return true
-				} else if choice%2 == 1 {
+					return true, true
+				} else if choice%3 == 1 {
 					// delete
 					os.Remove(backupfile)
+				} else if choice%3 == 2 {
+					return false, false
 				}
 			}
 		}
 	}
 
-	return false
+	return false, true
 }

internal/buffer/buffer_test.go

@@ -0,0 +1,322 @@
+package buffer
+
+import (
+	"math/rand"
+	"strings"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	lua "github.com/yuin/gopher-lua"
+	"github.com/zyedidia/micro/v2/internal/config"
+	ulua "github.com/zyedidia/micro/v2/internal/lua"
+	"github.com/zyedidia/micro/v2/internal/util"
+)
+
+type operation struct {
+	start Loc
+	end   Loc
+	text  []string
+}
+
+func init() {
+	ulua.L = lua.NewState()
+	config.InitGlobalSettings()
+	config.GlobalSettings["backup"] = false
+	config.GlobalSettings["fastdirty"] = true
+}
+
+func check(t *testing.T, before []string, operations []operation, after []string) {
+	assert := assert.New(t)
+
+	b := NewBufferFromString(strings.Join(before, "\n"), "", BTDefault)
+
+	assert.NotEqual("", b.GetName())
+	assert.Equal(false, b.ExternallyModified())
+	assert.Equal(false, b.Modified())
+	assert.Equal(1, b.NumCursors())
+
+	checkText := func(lines []string) {
+		assert.Equal([]byte(strings.Join(lines, "\n")), b.Bytes())
+		assert.Equal(len(lines), b.LinesNum())
+		for i, s := range lines {
+			assert.Equal(s, b.Line(i))
+			assert.Equal([]byte(s), b.LineBytes(i))
+		}
+	}
+
+	checkText(before)
+
+	var cursors []*Cursor
+
+	for _, op := range operations {
+		cursor := NewCursor(b, op.start)
+		cursor.SetSelectionStart(op.start)
+		cursor.SetSelectionEnd(op.end)
+		b.AddCursor(cursor)
+		cursors = append(cursors, cursor)
+	}
+
+	assert.Equal(1+len(operations), b.NumCursors())
+
+	for i, op := range operations {
+		cursor := cursors[i]
+		b.SetCurCursor(cursor.Num)
+		cursor.DeleteSelection()
+		b.Insert(cursor.Loc, strings.Join(op.text, "\n"))
+	}
+
+	checkText(after)
+
+	// must have exactly two events per operation (delete and insert)
+	for range operations {
+		b.UndoOneEvent()
+		b.UndoOneEvent()
+	}
+
+	checkText(before)
+
+	for i, op := range operations {
+		cursor := cursors[i]
+		if op.start == op.end {
+			assert.Equal(op.start, cursor.Loc)
+		} else {
+			assert.Equal(op.start, cursor.CurSelection[0])
+			assert.Equal(op.end, cursor.CurSelection[1])
+		}
+	}
+
+	for range operations {
+		b.RedoOneEvent()
+		b.RedoOneEvent()
+	}
+
+	checkText(after)
+
+	b.Close()
+}
+
+const maxLineLength = 200
+
+var alphabet = []rune(" abcdeäم📚")
+
+func randomString(length int) string {
+	runes := make([]rune, length)
+	for i := range runes {
+		runes[i] = alphabet[rand.Intn(len(alphabet))]
+	}
+	return string(runes)
+}
+
+func randomText(nLines int) string {
+	lines := make([]string, nLines)
+	for i := range lines {
+		lines[i] = randomString(rand.Intn(maxLineLength + 1))
+	}
+	return strings.Join(lines, "\n")
+}
+
+func benchCreateAndClose(testingB *testing.B, nLines int) {
+	rand.Seed(int64(nLines))
+
+	text := randomText(nLines)
+
+	testingB.ResetTimer()
+
+	for i := 0; i < testingB.N; i++ {
+		b := NewBufferFromString(text, "", BTDefault)
+		b.Close()
+	}
+}
+
+func benchRead(testingB *testing.B, nLines int) {
+	rand.Seed(int64(nLines))
+
+	b := NewBufferFromString(randomText(nLines), "", BTDefault)
+
+	testingB.ResetTimer()
+
+	for i := 0; i < testingB.N; i++ {
+		b.Bytes()
+		for j := 0; j < b.LinesNum(); j++ {
+			b.Line(j)
+			b.LineBytes(j)
+		}
+	}
+
+	testingB.StopTimer()
+
+	b.Close()
+}
+
+func benchEdit(testingB *testing.B, nLines, nCursors int) {
+	rand.Seed(int64(nLines + nCursors))
+
+	b := NewBufferFromString(randomText(nLines), "", BTDefault)
+
+	regionSize := nLines / nCursors
+
+	operations := make([]operation, nCursors)
+	for i := range operations {
+		startLine := (i * regionSize) + rand.Intn(regionSize-5)
+		startColumn := rand.Intn(util.CharacterCountInString(b.Line(startLine)) + 1)
+		endLine := startLine + 1 + rand.Intn(5)
+		endColumn := rand.Intn(util.CharacterCountInString(b.Line(endLine)) + 1)
+
+		operations[i] = operation{
+			start: Loc{startColumn, startLine},
+			end:   Loc{endColumn, endLine},
+			text:  []string{randomText(2 + rand.Intn(4))},
+		}
+	}
+
+	testingB.ResetTimer()
+
+	for i := 0; i < testingB.N; i++ {
+		b.SetCursors([]*Cursor{})
+
+		var cursors []*Cursor
+
+		for _, op := range operations {
+			cursor := NewCursor(b, op.start)
+			cursor.SetSelectionStart(op.start)
+			cursor.SetSelectionEnd(op.end)
+			b.AddCursor(cursor)
+			cursors = append(cursors, cursor)
+		}
+
+		for j, op := range operations {
+			cursor := cursors[j]
+			b.SetCurCursor(cursor.Num)
+			cursor.DeleteSelection()
+			b.Insert(cursor.Loc, op.text[0])
+		}
+
+		for b.UndoStack.Peek() != nil {
+			b.UndoOneEvent()
+		}
+	}
+
+	testingB.StopTimer()
+
+	b.Close()
+}
+
+func BenchmarkCreateAndClose10Lines(b *testing.B) {
+	benchCreateAndClose(b, 10)
+}
+
+func BenchmarkCreateAndClose100Lines(b *testing.B) {
+	benchCreateAndClose(b, 100)
+}
+
+func BenchmarkCreateAndClose1000Lines(b *testing.B) {
+	benchCreateAndClose(b, 1000)
+}
+
+func BenchmarkCreateAndClose10000Lines(b *testing.B) {
+	benchCreateAndClose(b, 10000)
+}
+
+func BenchmarkCreateAndClose100000Lines(b *testing.B) {
+	benchCreateAndClose(b, 100000)
+}
+
+func BenchmarkCreateAndClose1000000Lines(b *testing.B) {
+	benchCreateAndClose(b, 1000000)
+}
+
+func BenchmarkRead10Lines(b *testing.B) {
+	benchRead(b, 10)
+}
+
+func BenchmarkRead100Lines(b *testing.B) {
+	benchRead(b, 100)
+}
+
+func BenchmarkRead1000Lines(b *testing.B) {
+	benchRead(b, 1000)
+}
+
+func BenchmarkRead10000Lines(b *testing.B) {
+	benchRead(b, 10000)
+}
+
+func BenchmarkRead100000Lines(b *testing.B) {
+	benchRead(b, 100000)
+}
+
+func BenchmarkRead1000000Lines(b *testing.B) {
+	benchRead(b, 1000000)
+}
+
+func BenchmarkEdit10Lines1Cursor(b *testing.B) {
+	benchEdit(b, 10, 1)
+}
+
+func BenchmarkEdit100Lines1Cursor(b *testing.B) {
+	benchEdit(b, 100, 1)
+}
+
+func BenchmarkEdit100Lines10Cursors(b *testing.B) {
+	benchEdit(b, 100, 10)
+}
+
+func BenchmarkEdit1000Lines1Cursor(b *testing.B) {
+	benchEdit(b, 1000, 1)
+}
+
+func BenchmarkEdit1000Lines10Cursors(b *testing.B) {
+	benchEdit(b, 1000, 10)
+}
+
+func BenchmarkEdit1000Lines100Cursors(b *testing.B) {
+	benchEdit(b, 1000, 100)
+}
+
+func BenchmarkEdit10000Lines1Cursor(b *testing.B) {
+	benchEdit(b, 10000, 1)
+}
+
+func BenchmarkEdit10000Lines10Cursors(b *testing.B) {
+	benchEdit(b, 10000, 10)
+}
+
+func BenchmarkEdit10000Lines100Cursors(b *testing.B) {
+	benchEdit(b, 10000, 100)
+}
+
+func BenchmarkEdit10000Lines1000Cursors(b *testing.B) {
+	benchEdit(b, 10000, 1000)
+}
+
+func BenchmarkEdit100000Lines1Cursor(b *testing.B) {
+	benchEdit(b, 100000, 1)
+}
+
+func BenchmarkEdit100000Lines10Cursors(b *testing.B) {
+	benchEdit(b, 100000, 10)
+}
+
+func BenchmarkEdit100000Lines100Cursors(b *testing.B) {
+	benchEdit(b, 100000, 100)
+}
+
+func BenchmarkEdit100000Lines1000Cursors(b *testing.B) {
+	benchEdit(b, 100000, 1000)
+}
+
+func BenchmarkEdit1000000Lines1Cursor(b *testing.B) {
+	benchEdit(b, 1000000, 1)
+}
+
+func BenchmarkEdit1000000Lines10Cursors(b *testing.B) {
+	benchEdit(b, 1000000, 10)
+}
+
+func BenchmarkEdit1000000Lines100Cursors(b *testing.B) {
+	benchEdit(b, 1000000, 100)
+}
+
+func BenchmarkEdit1000000Lines1000Cursors(b *testing.B) {
+	benchEdit(b, 1000000, 1000)
+}

internal/buffer/cursor.go

@@ -1,15 +1,13 @@
 package buffer
 
 import (
-	"unicode/utf8"
-
-	"github.com/zyedidia/clipboard"
-	"github.com/zyedidia/micro/internal/util"
+	"github.com/zyedidia/micro/v2/internal/clipboard"
+	"github.com/zyedidia/micro/v2/internal/util"
 )
 
 // InBounds returns whether the given location is a valid character position in the given buffer
 func InBounds(pos Loc, buf *Buffer) bool {
-	if pos.Y < 0 || pos.Y >= len(buf.lines) || pos.X < 0 || pos.X > utf8.RuneCount(buf.LineBytes(pos.Y)) {
+	if pos.Y < 0 || pos.Y >= len(buf.lines) || pos.X < 0 || pos.X > util.CharacterCount(buf.LineBytes(pos.Y)) {
 		return false
 	}
 
@@ -69,6 +67,10 @@ func (c *Cursor) GotoLoc(l Loc) {
 
 // GetVisualX returns the x value of the cursor in visual spaces
 func (c *Cursor) GetVisualX() int {
+	if c.buf.GetVisualX != nil {
+		return c.buf.GetVisualX(c.Loc)
+	}
+
 	if c.X <= 0 {
 		c.X = 0
 		return 0
@@ -76,9 +78,6 @@ func (c *Cursor) GetVisualX() int {
 
 	bytes := c.buf.LineBytes(c.Y)
 	tabsize := int(c.buf.Settings["tabsize"].(float64))
-	if c.X > utf8.RuneCount(bytes) {
-		c.X = utf8.RuneCount(bytes) - 1
-	}
 
 	return util.StringWidth(bytes, c.X, tabsize)
 }
@@ -102,25 +101,38 @@ func (c *Cursor) Start() {
 func (c *Cursor) StartOfText() {
 	c.Start()
 	for util.IsWhitespace(c.RuneUnder(c.X)) {
-		if c.X == utf8.RuneCount(c.buf.LineBytes(c.Y)) {
+		if c.X == util.CharacterCount(c.buf.LineBytes(c.Y)) {
 			break
 		}
 		c.Right()
 	}
 }
 
+// IsStartOfText returns whether the cursor is at the first
+// non-whitespace rune of the line it is on
+func (c *Cursor) IsStartOfText() bool {
+	x := 0
+	for util.IsWhitespace(c.RuneUnder(x)) {
+		if x == util.CharacterCount(c.buf.LineBytes(c.Y)) {
+			break
+		}
+		x++
+	}
+	return c.X == x
+}
+
 // End moves the cursor to the end of the line it is on
 func (c *Cursor) End() {
-	c.X = utf8.RuneCount(c.buf.LineBytes(c.Y))
+	c.X = util.CharacterCount(c.buf.LineBytes(c.Y))
 	c.LastVisualX = c.GetVisualX()
 }
 
 // CopySelection copies the user's selection to either "primary"
 // or "clipboard"
-func (c *Cursor) CopySelection(target string) {
+func (c *Cursor) CopySelection(target clipboard.Register) {
 	if c.HasSelection() {
-		if target != "primary" || c.buf.Settings["useprimary"].(bool) {
-			clipboard.WriteAll(string(c.GetSelection()), target)
+		if target != clipboard.PrimaryReg || c.buf.Settings["useprimary"].(bool) {
+			clipboard.WriteMulti(string(c.GetSelection()), target, c.Num, c.buf.NumCursors())
 		}
 	}
 }
@@ -229,8 +241,14 @@ func (c *Cursor) UpN(amount int) {
 	bytes := c.buf.LineBytes(proposedY)
 	c.X = c.GetCharPosInLine(bytes, c.LastVisualX)
 
-	if c.X > utf8.RuneCount(bytes) || (amount < 0 && proposedY == c.Y) {
-		c.X = utf8.RuneCount(bytes)
+	if c.X > util.CharacterCount(bytes) || (amount < 0 && proposedY == c.Y) {
+		c.X = util.CharacterCount(bytes)
+		c.StoreVisualX()
+	}
+
+	if c.X < 0 || (amount > 0 && proposedY == c.Y) {
+		c.X = 0
+		c.StoreVisualX()
 	}
 
 	c.Y = proposedY
@@ -272,7 +290,7 @@ func (c *Cursor) Right() {
 	if c.Loc == c.buf.End() {
 		return
 	}
-	if c.X < utf8.RuneCount(c.buf.LineBytes(c.Y)) {
+	if c.X < util.CharacterCount(c.buf.LineBytes(c.Y)) {
 		c.X++
 	} else {
 		c.Down()
@@ -293,8 +311,8 @@ func (c *Cursor) Relocate() {
 
 	if c.X < 0 {
 		c.X = 0
-	} else if c.X > utf8.RuneCount(c.buf.LineBytes(c.Y)) {
-		c.X = utf8.RuneCount(c.buf.LineBytes(c.Y))
+	} else if c.X > util.CharacterCount(c.buf.LineBytes(c.Y)) {
+		c.X = util.CharacterCount(c.buf.LineBytes(c.Y))
 	}
 }
 
@@ -320,7 +338,7 @@ func (c *Cursor) SelectWord() {
 	c.SetSelectionStart(Loc{backward, c.Y})
 	c.OrigSelection[0] = c.CurSelection[0]
 
-	lineLen := utf8.RuneCount(c.buf.LineBytes(c.Y)) - 1
+	lineLen := util.CharacterCount(c.buf.LineBytes(c.Y)) - 1
 	for forward < lineLen && util.IsWordChar(c.RuneUnder(forward+1)) {
 		forward++
 	}
@@ -352,7 +370,7 @@ func (c *Cursor) AddWordToSelection() {
 	if c.Loc.GreaterThan(c.OrigSelection[1]) {
 		forward := c.X
 
-		lineLen := utf8.RuneCount(c.buf.LineBytes(c.Y)) - 1
+		lineLen := util.CharacterCount(c.buf.LineBytes(c.Y)) - 1
 		for forward < lineLen && util.IsWordChar(c.RuneUnder(forward+1)) {
 			forward++
 		}
@@ -379,7 +397,7 @@ func (c *Cursor) SelectTo(loc Loc) {
 // WordRight moves the cursor one word to the right
 func (c *Cursor) WordRight() {
 	for util.IsWhitespace(c.RuneUnder(c.X)) {
-		if c.X == utf8.RuneCount(c.buf.LineBytes(c.Y)) {
+		if c.X == util.CharacterCount(c.buf.LineBytes(c.Y)) {
 			c.Right()
 			return
 		}
@@ -387,7 +405,7 @@ func (c *Cursor) WordRight() {
 	}
 	c.Right()
 	for util.IsWordChar(c.RuneUnder(c.X)) {
-		if c.X == utf8.RuneCount(c.buf.LineBytes(c.Y)) {
+		if c.X == util.CharacterCount(c.buf.LineBytes(c.Y)) {
 			return
 		}
 		c.Right()
@@ -416,14 +434,14 @@ func (c *Cursor) WordLeft() {
 // RuneUnder returns the rune under the given x position
 func (c *Cursor) RuneUnder(x int) rune {
 	line := c.buf.LineBytes(c.Y)
-	if len(line) == 0 || x >= utf8.RuneCount(line) {
+	if len(line) == 0 || x >= util.CharacterCount(line) {
 		return '\n'
 	} else if x < 0 {
 		x = 0
 	}
 	i := 0
 	for len(line) > 0 {
-		r, size := utf8.DecodeRune(line)
+		r, _, size := util.DecodeCharacter(line)
 		line = line[size:]
 
 		if i == x {

internal/buffer/eventhandler.go

@@ -1,10 +1,15 @@
 package buffer
 
 import (
+	"bytes"
 	"time"
-	"unicode/utf8"
 
 	dmp "github.com/sergi/go-diff/diffmatchpatch"
+	"github.com/zyedidia/micro/v2/internal/config"
+	ulua "github.com/zyedidia/micro/v2/internal/lua"
+	"github.com/zyedidia/micro/v2/internal/screen"
+	"github.com/zyedidia/micro/v2/internal/util"
+	luar "layeh.com/gopher-luar"
 )
 
 const (
@@ -17,7 +22,7 @@ const (
 	// TextEventReplace represents a replace event
 	TextEventReplace = 0
 
-	undoThreshold = 500 // If two events are less than n milliseconds apart, undo both of them
+	undoThreshold = 1000 // If two events are less than n milliseconds apart, undo both of them
 )
 
 // TextEvent holds data for a manipulation on some text that can be undone
@@ -36,6 +41,73 @@ type Delta struct {
 	End   Loc
 }
 
+// DoTextEvent runs a text event
+func (eh *EventHandler) DoTextEvent(t *TextEvent, useUndo bool) {
+	oldl := eh.buf.LinesNum()
+
+	if useUndo {
+		eh.Execute(t)
+	} else {
+		ExecuteTextEvent(t, eh.buf)
+	}
+
+	if len(t.Deltas) != 1 {
+		return
+	}
+
+	text := t.Deltas[0].Text
+	start := t.Deltas[0].Start
+	lastnl := -1
+	var endX int
+	var textX int
+	if t.EventType == TextEventInsert {
+		linecount := eh.buf.LinesNum() - oldl
+		textcount := util.CharacterCount(text)
+		lastnl = bytes.LastIndex(text, []byte{'\n'})
+		if lastnl >= 0 {
+			endX = util.CharacterCount(text[lastnl+1:])
+			textX = endX
+		} else {
+			endX = start.X + textcount
+			textX = textcount
+		}
+		t.Deltas[0].End = clamp(Loc{endX, start.Y + linecount}, eh.buf.LineArray)
+	}
+	end := t.Deltas[0].End
+
+	for _, c := range eh.cursors {
+		move := func(loc Loc) Loc {
+			if t.EventType == TextEventInsert {
+				if start.Y != loc.Y && loc.GreaterThan(start) {
+					loc.Y += end.Y - start.Y
+				} else if loc.Y == start.Y && loc.GreaterEqual(start) {
+					loc.Y += end.Y - start.Y
+					if lastnl >= 0 {
+						loc.X += textX - start.X
+					} else {
+						loc.X += textX
+					}
+				}
+				return loc
+			} else {
+				if loc.Y != end.Y && loc.GreaterThan(end) {
+					loc.Y -= end.Y - start.Y
+				} else if loc.Y == end.Y && loc.GreaterEqual(end) {
+					loc = loc.MoveLA(-DiffLA(start, end, eh.buf.LineArray), eh.buf.LineArray)
+				}
+				return loc
+			}
+		}
+		c.Loc = move(c.Loc)
+		c.CurSelection[0] = move(c.CurSelection[0])
+		c.CurSelection[1] = move(c.CurSelection[1])
+		c.OrigSelection[0] = move(c.OrigSelection[0])
+		c.OrigSelection[1] = move(c.OrigSelection[1])
+		c.Relocate()
+		c.LastVisualX = c.GetVisualX()
+	}
+}
+
 // ExecuteTextEvent runs a text event
 func ExecuteTextEvent(t *TextEvent, buf *SharedBuffer) {
 	if t.EventType == TextEventInsert {
@@ -51,7 +123,7 @@ func ExecuteTextEvent(t *TextEvent, buf *SharedBuffer) {
 			t.Deltas[i].Text = buf.remove(d.Start, d.End)
 			buf.insert(d.Start, d.Text)
 			t.Deltas[i].Start = d.Start
-			t.Deltas[i].End = Loc{d.Start.X + utf8.RuneCount(d.Text), d.Start.Y}
+			t.Deltas[i].End = Loc{d.Start.X + util.CharacterCount(d.Text), d.Start.Y}
 		}
 		for i, j := 0, len(t.Deltas)-1; i < j; i, j = i+1, j-1 {
 			t.Deltas[i], t.Deltas[j] = t.Deltas[j], t.Deltas[i]
@@ -60,9 +132,9 @@ func ExecuteTextEvent(t *TextEvent, buf *SharedBuffer) {
 }
 
 // UndoTextEvent undoes a text event
-func UndoTextEvent(t *TextEvent, buf *SharedBuffer) {
+func (eh *EventHandler) UndoTextEvent(t *TextEvent) {
 	t.EventType = -t.EventType
-	ExecuteTextEvent(t, buf)
+	eh.DoTextEvent(t, false)
 }
 
 // EventHandler executes text manipulations and allows undoing and redoing
@@ -94,12 +166,12 @@ func (eh *EventHandler) ApplyDiff(new string) {
 	loc := eh.buf.Start()
 	for _, d := range diff {
 		if d.Type == dmp.DiffDelete {
-			eh.Remove(loc, loc.MoveLA(utf8.RuneCountInString(d.Text), eh.buf.LineArray))
+			eh.Remove(loc, loc.MoveLA(util.CharacterCountInString(d.Text), eh.buf.LineArray))
 		} else {
 			if d.Type == dmp.DiffInsert {
 				eh.Insert(loc, d.Text)
 			}
-			loc = loc.MoveLA(utf8.RuneCountInString(d.Text), eh.buf.LineArray)
+			loc = loc.MoveLA(util.CharacterCountInString(d.Text), eh.buf.LineArray)
 		}
 	}
 }
@@ -107,60 +179,38 @@ func (eh *EventHandler) ApplyDiff(new string) {
 // Insert creates an insert text event and executes it
 func (eh *EventHandler) Insert(start Loc, textStr string) {
 	text := []byte(textStr)
+	eh.InsertBytes(start, text)
+}
+
+// InsertBytes creates an insert text event and executes it
+func (eh *EventHandler) InsertBytes(start Loc, text []byte) {
+	if len(text) == 0 {
+		return
+	}
+	start = clamp(start, eh.buf.LineArray)
 	e := &TextEvent{
 		C:         *eh.cursors[eh.active],
 		EventType: TextEventInsert,
 		Deltas:    []Delta{{text, start, Loc{0, 0}}},
 		Time:      time.Now(),
 	}
-	eh.Execute(e)
-	e.Deltas[0].End = start.MoveLA(utf8.RuneCount(text), eh.buf.LineArray)
-	end := e.Deltas[0].End
-
-	for _, c := range eh.cursors {
-		move := func(loc Loc) Loc {
-			if start.Y != end.Y && loc.GreaterThan(start) {
-				loc.Y += end.Y - start.Y
-			} else if loc.Y == start.Y && loc.GreaterEqual(start) {
-				loc = loc.MoveLA(utf8.RuneCount(text), eh.buf.LineArray)
-			}
-			return loc
-		}
-		c.Loc = move(c.Loc)
-		c.CurSelection[0] = move(c.CurSelection[0])
-		c.CurSelection[1] = move(c.CurSelection[1])
-		c.OrigSelection[0] = move(c.OrigSelection[0])
-		c.OrigSelection[1] = move(c.OrigSelection[1])
-		c.LastVisualX = c.GetVisualX()
-	}
+	eh.DoTextEvent(e, true)
 }
 
 // Remove creates a remove text event and executes it
 func (eh *EventHandler) Remove(start, end Loc) {
+	if start == end {
+		return
+	}
+	start = clamp(start, eh.buf.LineArray)
+	end = clamp(end, eh.buf.LineArray)
 	e := &TextEvent{
 		C:         *eh.cursors[eh.active],
 		EventType: TextEventRemove,
 		Deltas:    []Delta{{[]byte{}, start, end}},
 		Time:      time.Now(),
 	}
-	eh.Execute(e)
-
-	for _, c := range eh.cursors {
-		move := func(loc Loc) Loc {
-			if start.Y != end.Y && loc.GreaterThan(end) {
-				loc.Y -= end.Y - start.Y
-			} else if loc.Y == end.Y && loc.GreaterEqual(end) {
-				loc = loc.MoveLA(-DiffLA(start, end, eh.buf.LineArray), eh.buf.LineArray)
-			}
-			return loc
-		}
-		c.Loc = move(c.Loc)
-		c.CurSelection[0] = move(c.CurSelection[0])
-		c.CurSelection[1] = move(c.CurSelection[1])
-		c.OrigSelection[0] = move(c.OrigSelection[0])
-		c.OrigSelection[1] = move(c.OrigSelection[1])
-		c.LastVisualX = c.GetVisualX()
-	}
+	eh.DoTextEvent(e, true)
 }
 
 // MultipleReplace creates an multiple insertions executes them
@@ -187,16 +237,14 @@ func (eh *EventHandler) Execute(t *TextEvent) {
 	}
 	eh.UndoStack.Push(t)
 
-	// TODO: Call plugins on text events
-	// for pl := range loadedPlugins {
-	// 	ret, err := Call(pl+".onBeforeTextEvent", t)
-	// 	if err != nil && !strings.HasPrefix(err.Error(), "function does not exist") {
-	// 		screen.TermMessage(err)
-	// 	}
-	// 	if val, ok := ret.(lua.LBool); ok && val == lua.LFalse {
-	// 		return
-	// 	}
-	// }
+	b, err := config.RunPluginFnBool(nil, "onBeforeTextEvent", luar.New(ulua.L, eh.buf), luar.New(ulua.L, t))
+	if err != nil {
+		screen.TermMessage(err)
+	}
+
+	if !b {
+		return
+	}
 
 	ExecuteTextEvent(t, eh.buf)
 }
@@ -209,8 +257,7 @@ func (eh *EventHandler) Undo() {
 	}
 
 	startTime := t.Time.UnixNano() / int64(time.Millisecond)
-
-	eh.UndoOneEvent()
+	endTime := startTime - (startTime % undoThreshold)
 
 	for {
 		t = eh.UndoStack.Peek()
@@ -218,10 +265,9 @@ func (eh *EventHandler) Undo() {
 			return
 		}
 
-		if startTime-(t.Time.UnixNano()/int64(time.Millisecond)) > undoThreshold {
+		if t.Time.UnixNano()/int64(time.Millisecond) < endTime {
 			return
 		}
-		startTime = t.Time.UnixNano() / int64(time.Millisecond)
 
 		eh.UndoOneEvent()
 	}
@@ -235,10 +281,9 @@ func (eh *EventHandler) UndoOneEvent() {
 	if t == nil {
 		return
 	}
-
 	// Undo it
 	// Modifies the text event
-	UndoTextEvent(t, eh.buf)
+	eh.UndoTextEvent(t)
 
 	// Set the cursor in the right place
 	teCursor := t.C
@@ -261,8 +306,7 @@ func (eh *EventHandler) Redo() {
 	}
 
 	startTime := t.Time.UnixNano() / int64(time.Millisecond)
-
-	eh.RedoOneEvent()
+	endTime := startTime - (startTime % undoThreshold) + undoThreshold
 
 	for {
 		t = eh.RedoStack.Peek()
@@ -270,7 +314,7 @@ func (eh *EventHandler) Redo() {
 			return
 		}
 
-		if (t.Time.UnixNano()/int64(time.Millisecond))-startTime > undoThreshold {
+		if t.Time.UnixNano()/int64(time.Millisecond) > endTime {
 			return
 		}
 
@@ -285,9 +329,6 @@ func (eh *EventHandler) RedoOneEvent() {
 		return
 	}
 
-	// Modifies the text event
-	UndoTextEvent(t, eh.buf)
-
 	teCursor := t.C
 	if teCursor.Num >= 0 && teCursor.Num < len(eh.cursors) {
 		t.C = *eh.cursors[teCursor.Num]
@@ -296,5 +337,8 @@ func (eh *EventHandler) RedoOneEvent() {
 		teCursor.Num = -1
 	}
 
+	// Modifies the text event
+	eh.UndoTextEvent(t)
+
 	eh.UndoStack.Push(t)
 }

internal/buffer/line_array.go

@@ -2,10 +2,12 @@ package buffer
 
 import (
 	"bufio"
+	"bytes"
 	"io"
-	"unicode/utf8"
+	"sync"
 
-	"github.com/zyedidia/micro/pkg/highlight"
+	"github.com/zyedidia/micro/v2/internal/util"
+	"github.com/zyedidia/micro/v2/pkg/highlight"
 )
 
 // Finds the byte index of the nth rune in a byte slice
@@ -17,7 +19,7 @@ func runeToByteIndex(n int, txt []byte) int {
 	count := 0
 	i := 0
 	for len(txt) > 0 {
-		_, size := utf8.DecodeRune(txt)
+		_, _, size := util.DecodeCharacter(txt)
 
 		txt = txt[size:]
 		count += size
@@ -30,6 +32,15 @@ func runeToByteIndex(n int, txt []byte) int {
 	return count
 }
 
+// A searchState contains the search match info for a single line
+type searchState struct {
+	search     string
+	useRegex   bool
+	ignorecase bool
+	match      [][2]int
+	done       bool
+}
+
 // A Line contains the data in bytes as well as a highlight state, match
 // and a flag for whether the highlighting needs to be updated
 type Line struct {
@@ -38,6 +49,15 @@ type Line struct {
 	state       highlight.State
 	match       highlight.LineMatch
 	rehighlight bool
+	lock        sync.Mutex
+
+	// The search states for the line, used for highlighting of search matches,
+	// separately from the syntax highlighting.
+	// A map is used because the line array may be shared between multiple buffers
+	// (multiple instances of the same file opened in different edit panes)
+	// which have distinct searches, so in the general case there are multiple
+	// searches per a line, one search per a Buffer containing this line.
+	search map[*Buffer]*searchState
 }
 
 const (
@@ -84,6 +104,8 @@ func NewLineArray(size uint64, endings FileFormat, reader io.Reader) *LineArray
 	br := bufio.NewReader(reader)
 	var loaded int
 
+	la.Endings = endings
+
 	n := 0
 	for {
 		data, err := br.ReadBytes('\n')
@@ -124,12 +146,22 @@ func NewLineArray(size uint64, endings FileFormat, reader io.Reader) *LineArray
 
 		if err != nil {
 			if err == io.EOF {
-				la.lines = Append(la.lines, Line{data[:], nil, nil, false})
+				la.lines = Append(la.lines, Line{
+					data:        data,
+					state:       nil,
+					match:       nil,
+					rehighlight: false,
+				})
 			}
 			// Last line was read
 			break
 		} else {
-			la.lines = Append(la.lines, Line{data[:dlen-1], nil, nil, false})
+			la.lines = Append(la.lines, Line{
+				data:        data[:dlen-1],
+				state:       nil,
+				match:       nil,
+				rehighlight: false,
+			})
 		}
 		n++
 	}
@@ -140,34 +172,51 @@ func NewLineArray(size uint64, endings FileFormat, reader io.Reader) *LineArray
 // Bytes returns the string that should be written to disk when
 // the line array is saved
 func (la *LineArray) Bytes() []byte {
-	str := make([]byte, 0, la.initsize+1000) // initsize should provide a good estimate
+	b := new(bytes.Buffer)
+	// initsize should provide a good estimate
+	b.Grow(int(la.initsize + 4096))
 	for i, l := range la.lines {
-		str = append(str, l.data...)
+		b.Write(l.data)
 		if i != len(la.lines)-1 {
 			if la.Endings == FFDos {
-				str = append(str, '\r')
+				b.WriteByte('\r')
 			}
-			str = append(str, '\n')
+			b.WriteByte('\n')
 		}
 	}
-	return str
+	return b.Bytes()
 }
 
 // newlineBelow adds a newline below the given line number
 func (la *LineArray) newlineBelow(y int) {
-	la.lines = append(la.lines, Line{[]byte{' '}, nil, nil, false})
+	la.lines = append(la.lines, Line{
+		data:        []byte{' '},
+		state:       nil,
+		match:       nil,
+		rehighlight: false,
+	})
 	copy(la.lines[y+2:], la.lines[y+1:])
-	la.lines[y+1] = Line{[]byte{}, la.lines[y].state, nil, false}
+	la.lines[y+1] = Line{
+		data:        []byte{},
+		state:       la.lines[y].state,
+		match:       nil,
+		rehighlight: false,
+	}
 }
 
 // Inserts a byte array at a given location
 func (la *LineArray) insert(pos Loc, value []byte) {
 	x, y := runeToByteIndex(pos.X, la.lines[pos.Y].data), pos.Y
 	for i := 0; i < len(value); i++ {
-		if value[i] == '\n' {
+		if value[i] == '\n' || (value[i] == '\r' && i < len(value)-1 && value[i+1] == '\n') {
 			la.split(Loc{x, y})
 			x = 0
 			y++
+
+			if value[i] == '\r' {
+				i++
+			}
+
 			continue
 		}
 		la.insertByte(Loc{x, y}, value[i])
@@ -208,9 +257,7 @@ func (la *LineArray) remove(start, end Loc) []byte {
 	if start.Y == end.Y {
 		la.lines[start.Y].data = append(la.lines[start.Y].data[:startX], la.lines[start.Y].data[endX:]...)
 	} else {
-		for i := start.Y + 1; i <= end.Y-1; i++ {
-			la.deleteLine(start.Y + 1)
-		}
+		la.deleteLines(start.Y+1, end.Y-1)
 		la.deleteToEnd(Loc{startX, start.Y})
 		la.deleteFromStart(Loc{endX - 1, start.Y + 1})
 		la.joinLines(start.Y, start.Y+1)
@@ -233,6 +280,10 @@ func (la *LineArray) deleteLine(y int) {
 	la.lines = la.lines[:y+copy(la.lines[y:], la.lines[y+1:])]
 }
 
+func (la *LineArray) deleteLines(y1, y2 int) {
+	la.lines = la.lines[:y1+copy(la.lines[y1:], la.lines[y2+1:])]
+}
+
 // DeleteByte deletes the byte at a position
 func (la *LineArray) deleteByte(pos Loc) {
 	la.lines[pos.Y].data = la.lines[pos.Y].data[:pos.X+copy(la.lines[pos.Y].data[pos.X:], la.lines[pos.Y].data[pos.X+1:])]
@@ -272,7 +323,7 @@ func (la *LineArray) Start() Loc {
 // End returns the location of the last character in the buffer
 func (la *LineArray) End() Loc {
 	numlines := len(la.lines)
-	return Loc{utf8.RuneCount(la.lines[numlines-1].data), numlines - 1}
+	return Loc{util.CharacterCount(la.lines[numlines-1].data), numlines - 1}
 }
 
 // LineBytes returns line n as an array of bytes
@@ -285,28 +336,116 @@ func (la *LineArray) LineBytes(n int) []byte {
 
 // State gets the highlight state for the given line number
 func (la *LineArray) State(lineN int) highlight.State {
+	la.lines[lineN].lock.Lock()
+	defer la.lines[lineN].lock.Unlock()
 	return la.lines[lineN].state
 }
 
 // SetState sets the highlight state at the given line number
 func (la *LineArray) SetState(lineN int, s highlight.State) {
+	la.lines[lineN].lock.Lock()
+	defer la.lines[lineN].lock.Unlock()
 	la.lines[lineN].state = s
 }
 
 // SetMatch sets the match at the given line number
 func (la *LineArray) SetMatch(lineN int, m highlight.LineMatch) {
+	la.lines[lineN].lock.Lock()
+	defer la.lines[lineN].lock.Unlock()
 	la.lines[lineN].match = m
 }
 
 // Match retrieves the match for the given line number
 func (la *LineArray) Match(lineN int) highlight.LineMatch {
+	la.lines[lineN].lock.Lock()
+	defer la.lines[lineN].lock.Unlock()
 	return la.lines[lineN].match
 }
 
 func (la *LineArray) Rehighlight(lineN int) bool {
+	la.lines[lineN].lock.Lock()
+	defer la.lines[lineN].lock.Unlock()
 	return la.lines[lineN].rehighlight
 }
 
 func (la *LineArray) SetRehighlight(lineN int, on bool) {
+	la.lines[lineN].lock.Lock()
+	defer la.lines[lineN].lock.Unlock()
 	la.lines[lineN].rehighlight = on
 }
+
+// SearchMatch returns true if the location `pos` is within a match
+// of the last search for the buffer `b`.
+// It is used for efficient highlighting of search matches (separately
+// from the syntax highlighting).
+// SearchMatch searches for the matches if it is called first time
+// for the given line or if the line was modified. Otherwise the
+// previously found matches are used.
+//
+// The buffer `b` needs to be passed because the line array may be shared
+// between multiple buffers (multiple instances of the same file opened
+// in different edit panes) which have distinct searches, so SearchMatch
+// needs to know which search to match against.
+func (la *LineArray) SearchMatch(b *Buffer, pos Loc) bool {
+	if b.LastSearch == "" {
+		return false
+	}
+
+	lineN := pos.Y
+	if la.lines[lineN].search == nil {
+		la.lines[lineN].search = make(map[*Buffer]*searchState)
+	}
+	s, ok := la.lines[lineN].search[b]
+	if !ok {
+		// Note: here is a small harmless leak: when the buffer `b` is closed,
+		// `s` is not deleted from the map. It means that the buffer
+		// will not be garbage-collected until the line array is garbage-collected,
+		// i.e. until all the buffers sharing this file are closed.
+		s = new(searchState)
+		la.lines[lineN].search[b] = s
+	}
+	if !ok || s.search != b.LastSearch || s.useRegex != b.LastSearchRegex ||
+		s.ignorecase != b.Settings["ignorecase"].(bool) {
+		s.search = b.LastSearch
+		s.useRegex = b.LastSearchRegex
+		s.ignorecase = b.Settings["ignorecase"].(bool)
+		s.done = false
+	}
+
+	if !s.done {
+		s.match = nil
+		start := Loc{0, lineN}
+		end := Loc{util.CharacterCount(la.lines[lineN].data), lineN}
+		for start.X < end.X {
+			m, found, _ := b.FindNext(b.LastSearch, start, end, start, true, b.LastSearchRegex)
+			if !found {
+				break
+			}
+			s.match = append(s.match, [2]int{m[0].X, m[1].X})
+
+			start.X = m[1].X
+			if m[1].X == m[0].X {
+				start.X = m[1].X + 1
+			}
+		}
+
+		s.done = true
+	}
+
+	for _, m := range s.match {
+		if pos.X >= m[0] && pos.X < m[1] {
+			return true
+		}
+	}
+	return false
+}
+
+// invalidateSearchMatches marks search matches for the given line as outdated.
+// It is called when the line is modified.
+func (la *LineArray) invalidateSearchMatches(lineN int) {
+	if la.lines[lineN].search != nil {
+		for _, s := range la.lines[lineN].search {
+			s.done = false
+		}
+	}
+}

internal/buffer/line_array_test.go

@@ -46,14 +46,15 @@ func TestInsert(t *testing.T) {
 
 	assert.Equal(t, []byte("Uppen Sevarne staþe, foobar sel þar him þuhte,"), sub1)
 
-	la.insert(Loc{25, 2}, []byte("ಮಣ್ಣಾಗಿ"))
+	la.insert(Loc{25, 2}, []byte("H̼̥̯͇͙̕͘͞e̸̦̞̠̣̰͙̼̥̦̼̖̬͕͕̰̯̫͇̕ĺ̜̠̩̯̯͙̼̭̠͕̮̞͜l̶͓̫̞̮͈͞ͅo̸͔͙̳̠͈̮̼̳͙̥̲͜͠"))
+
 	sub2 := la.Substr(Loc{0, 2}, Loc{60, 2})
-	assert.Equal(t, []byte("He wonede at Ernleȝe at æಮಣ್ಣಾಗಿðelen are chirechen,"), sub2)
+	assert.Equal(t, []byte("He wonede at Ernleȝe at æH̼̥̯͇͙̕͘͞e̸̦̞̠̣̰͙̼̥̦̼̖̬͕͕̰̯̫͇̕ĺ̜̠̩̯̯͙̼̭̠͕̮̞͜l̶͓̫̞̮͈͞ͅo̸͔͙̳̠͈̮̼̳͙̥̲͜͠ðelen are chirechen,"), sub2)
 }
 
 func TestRemove(t *testing.T) {
 	la.remove(Loc{20, 3}, Loc{27, 3})
-	la.remove(Loc{25, 2}, Loc{32, 2})
+	la.remove(Loc{25, 2}, Loc{30, 2})
 
 	bytes := la.Bytes()
 	assert.Equal(t, unicode_txt, string(bytes))

internal/buffer/loc.go

@@ -1,9 +1,7 @@
 package buffer
 
 import (
-	"unicode/utf8"
-
-	"github.com/zyedidia/micro/internal/util"
+	"github.com/zyedidia/micro/v2/internal/util"
 )
 
 // Loc stores a location
@@ -68,9 +66,9 @@ func DiffLA(a, b Loc, buf *LineArray) int {
 	loc := 0
 	for i := a.Y + 1; i < b.Y; i++ {
 		// + 1 for the newline
-		loc += utf8.RuneCount(buf.LineBytes(i)) + 1
+		loc += util.CharacterCount(buf.LineBytes(i)) + 1
 	}
-	loc += utf8.RuneCount(buf.LineBytes(a.Y)) - a.X + b.X + 1
+	loc += util.CharacterCount(buf.LineBytes(a.Y)) - a.X + b.X + 1
 	return loc
 }
 
@@ -80,7 +78,7 @@ func (l Loc) right(buf *LineArray) Loc {
 		return Loc{l.X + 1, l.Y}
 	}
 	var res Loc
-	if l.X < utf8.RuneCount(buf.LineBytes(l.Y)) {
+	if l.X < util.CharacterCount(buf.LineBytes(l.Y)) {
 		res = Loc{l.X + 1, l.Y}
 	} else {
 		res = Loc{0, l.Y + 1}
@@ -97,12 +95,12 @@ func (l Loc) left(buf *LineArray) Loc {
 	if l.X > 0 {
 		res = Loc{l.X - 1, l.Y}
 	} else {
-		res = Loc{utf8.RuneCount(buf.LineBytes(l.Y - 1)), l.Y - 1}
+		res = Loc{util.CharacterCount(buf.LineBytes(l.Y - 1)), l.Y - 1}
 	}
 	return res
 }
 
-// Move moves the cursor n characters to the left or right
+// MoveLA moves the cursor n characters to the left or right
 // It moves the cursor left if n is negative
 func (l Loc) MoveLA(n int, buf *LineArray) Loc {
 	if n > 0 {
@@ -117,9 +115,12 @@ func (l Loc) MoveLA(n int, buf *LineArray) Loc {
 	return l
 }
 
-func (l Loc) Diff(a, b Loc, buf *Buffer) int {
-	return DiffLA(a, b, buf.LineArray)
+// Diff returns the difference between two locs
+func (l Loc) Diff(b Loc, buf *Buffer) int {
+	return DiffLA(l, b, buf.LineArray)
 }
+
+// Move moves a loc n characters
 func (l Loc) Move(n int, buf *Buffer) Loc {
 	return l.MoveLA(n, buf.LineArray)
 }
@@ -135,3 +136,13 @@ func ByteOffset(pos Loc, buf *Buffer) int {
 	loc += len(buf.Line(y)[:x])
 	return loc
 }
+
+// clamps a loc within a buffer
+func clamp(pos Loc, la *LineArray) Loc {
+	if pos.GreaterEqual(la.End()) {
+		return la.End()
+	} else if pos.LessThan(la.Start()) {
+		return la.Start()
+	}
+	return pos
+}

internal/buffer/message.go

@@ -1,8 +1,8 @@
 package buffer
 
 import (
-	"github.com/zyedidia/micro/internal/config"
-	"github.com/zyedidia/tcell"
+	"github.com/zyedidia/micro/v2/internal/config"
+	"github.com/zyedidia/tcell/v2"
 )
 
 type MsgType int
@@ -13,13 +13,19 @@ const (
 	MTError
 )
 
+// Message represents the information for a gutter message
 type Message struct {
-	Msg        string
+	// The Msg iteslf
+	Msg string
+	// Start and End locations for the message
 	Start, End Loc
-	Kind       MsgType
-	Owner      string
+	// The Kind stores the message type
+	Kind MsgType
+	// The Owner of the message
+	Owner string
 }
 
+// NewMessage creates a new gutter message
 func NewMessage(owner string, msg string, start, end Loc, kind MsgType) *Message {
 	return &Message{
 		Msg:   msg,
@@ -30,6 +36,7 @@ func NewMessage(owner string, msg string, start, end Loc, kind MsgType) *Message
 	}
 }
 
+// NewMessageAtLine creates a new gutter message at a given line
 func NewMessageAtLine(owner string, msg string, line int, kind MsgType) *Message {
 	start := Loc{-1, line - 1}
 	end := start
@@ -75,3 +82,13 @@ func (b *Buffer) ClearMessages(owner string) {
 func (b *Buffer) ClearAllMessages() {
 	b.Messages = make([]*Message, 0)
 }
+
+type Messager interface {
+	Message(msg ...interface{})
+}
+
+var prompt Messager
+
+func SetMessager(m Messager) {
+	prompt = m
+}

internal/buffer/save.go

@@ -1,6 +1,7 @@
 package buffer
 
 import (
+	"bufio"
 	"bytes"
 	"errors"
 	"io"
@@ -8,12 +9,12 @@ import (
 	"os/exec"
 	"os/signal"
 	"path/filepath"
+	"runtime"
 	"unicode"
-	"unicode/utf8"
 
-	"github.com/zyedidia/micro/internal/config"
-	"github.com/zyedidia/micro/internal/screen"
-	"github.com/zyedidia/micro/internal/util"
+	"github.com/zyedidia/micro/v2/internal/config"
+	"github.com/zyedidia/micro/v2/internal/screen"
+	"github.com/zyedidia/micro/v2/internal/util"
 	"golang.org/x/text/encoding"
 	"golang.org/x/text/encoding/htmlindex"
 	"golang.org/x/text/transform"
@@ -26,70 +27,64 @@ const LargeFileThreshold = 50000
 // overwriteFile opens the given file for writing, truncating if one exists, and then calls
 // the supplied function with the file as io.Writer object, also making sure the file is
 // closed afterwards.
-func overwriteFile(name string, enc encoding.Encoding, fn func(io.Writer) error) (err error) {
-	var file *os.File
+func overwriteFile(name string, enc encoding.Encoding, fn func(io.Writer) error, withSudo bool) (err error) {
+	var writeCloser io.WriteCloser
+	var screenb bool
+	var cmd *exec.Cmd
 
-	if file, err = os.OpenFile(name, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0644); err != nil {
-		return
-	}
+	if withSudo {
+		cmd = exec.Command(config.GlobalSettings["sucmd"].(string), "dd", "bs=4k", "of="+name)
 
-	defer func() {
-		if e := file.Close(); e != nil && err == nil {
-			err = e
+		if writeCloser, err = cmd.StdinPipe(); err != nil {
+			return
 		}
-	}()
 
-	w := transform.NewWriter(file, enc.NewEncoder())
-	// w := bufio.NewWriter(file)
-
-	if err = fn(w); err != nil {
-		return
-	}
-
-	// err = w.Flush()
-	return
-}
-
-// overwriteFileAsRoot executes dd as root and then calls the supplied function
-// with dd's standard input as an io.Writer object. Dd opens the given file for writing,
-// truncating it if it exists, and writes what it receives on its standard input to the file.
-func overwriteFileAsRoot(name string, enc encoding.Encoding, fn func(io.Writer) error) (err error) {
-	cmd := exec.Command(config.GlobalSettings["sucmd"].(string), "dd", "status=none", "bs=4K", "of="+name)
-	var stdin io.WriteCloser
-
-	screenb := screen.TempFini()
-
-	// This is a trap for Ctrl-C so that it doesn't kill micro
-	// Instead we trap Ctrl-C to kill the program we're running
-	c := make(chan os.Signal, 1)
-	signal.Notify(c, os.Interrupt)
-	go func() {
-		for range c {
+		c := make(chan os.Signal, 1)
+		signal.Notify(c, os.Interrupt)
+		go func() {
+			<-c
 			cmd.Process.Kill()
+		}()
+
+		screenb = screen.TempFini()
+		// need to start the process now, otherwise when we flush the file
+		// contents to its stdin it might hang because the kernel's pipe size
+		// is too small to handle the full file contents all at once
+		if e := cmd.Start(); e != nil && err == nil {
+			return err
 		}
-	}()
-
-	if stdin, err = cmd.StdinPipe(); err != nil {
+	} else if writeCloser, err = os.OpenFile(name, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0644); err != nil {
 		return
 	}
 
-	if err = cmd.Start(); err != nil {
-		return
+	w := bufio.NewWriter(transform.NewWriter(writeCloser, enc.NewEncoder()))
+	err = fn(w)
+
+	if err2 := w.Flush(); err2 != nil && err == nil {
+		err = err2
+	}
+	// Call Sync() on the file to make sure the content is safely on disk.
+	// Does not work with sudo as we don't have direct access to the file.
+	if !withSudo {
+		f := writeCloser.(*os.File)
+		if err2 := f.Sync(); err2 != nil && err == nil {
+			err = err2
+		}
+	}
+	if err2 := writeCloser.Close(); err2 != nil && err == nil {
+		err = err2
 	}
 
-	e := fn(stdin)
-
-	if err = stdin.Close(); err != nil {
-		return
+	if withSudo {
+		// wait for dd to finish and restart the screen if we used sudo
+		err := cmd.Wait()
+		if err != nil {
+			return err
+		}
+		screen.TempStart(screenb)
 	}
 
-	if err = cmd.Wait(); err != nil {
-		return
-	}
-
-	screen.TempStart(screenb)
-
-	return e
+	return
 }
 
 // Save saves the buffer to its default path
@@ -118,13 +113,15 @@ func (b *Buffer) saveToFile(filename string, withSudo bool) error {
 	if b.Type.Scratch {
 		return errors.New("Cannot save scratch buffer")
 	}
+	if withSudo && runtime.GOOS == "windows" {
+		return errors.New("Save with sudo not supported on Windows")
+	}
 
-	b.UpdateRules()
 	if b.Settings["rmtrailingws"].(bool) {
 		for i, l := range b.lines {
-			leftover := utf8.RuneCount(bytes.TrimRightFunc(l.data, unicode.IsSpace))
+			leftover := util.CharacterCount(bytes.TrimRightFunc(l.data, unicode.IsSpace))
 
-			linelen := utf8.RuneCount(l.data)
+			linelen := util.CharacterCount(l.data)
 			b.Remove(Loc{leftover, i}, Loc{linelen, i})
 		}
 
@@ -134,7 +131,7 @@ func (b *Buffer) saveToFile(filename string, withSudo bool) error {
 	if b.Settings["eofnewline"].(bool) {
 		end := b.End()
 		if b.RuneAt(Loc{end.X - 1, end.Y}) != '\n' {
-			b.Insert(end, "\n")
+			b.insert(end, []byte{'\n'})
 		}
 	}
 
@@ -201,13 +198,7 @@ func (b *Buffer) saveToFile(filename string, withSudo bool) error {
 		return
 	}
 
-	if withSudo {
-		err = overwriteFileAsRoot(absFilename, enc, fwriter)
-	} else {
-		err = overwriteFile(absFilename, enc, fwriter)
-	}
-
-	if err != nil {
+	if err = overwriteFile(absFilename, enc, fwriter, withSudo); err != nil {
 		return err
 	}
 
@@ -224,5 +215,6 @@ func (b *Buffer) saveToFile(filename string, withSudo bool) error {
 	absPath, _ := filepath.Abs(filename)
 	b.AbsPath = absPath
 	b.isModified = false
+	b.UpdateRules()
 	return err
 }

internal/buffer/search.go

@@ -2,12 +2,18 @@ package buffer
 
 import (
 	"regexp"
-	"unicode/utf8"
 
-	"github.com/zyedidia/micro/internal/util"
+	"github.com/zyedidia/micro/v2/internal/util"
 )
 
 func (b *Buffer) findDown(r *regexp.Regexp, start, end Loc) ([2]Loc, bool) {
+	lastcn := util.CharacterCount(b.LineBytes(b.LinesNum() - 1))
+	if start.Y > b.LinesNum()-1 {
+		start.X = lastcn - 1
+	}
+	if end.Y > b.LinesNum()-1 {
+		end.X = lastcn
+	}
 	start.Y = util.Clamp(start.Y, 0, b.LinesNum()-1)
 	end.Y = util.Clamp(end.Y, 0, b.LinesNum()-1)
 
@@ -20,19 +26,19 @@ func (b *Buffer) findDown(r *regexp.Regexp, start, end Loc) ([2]Loc, bool) {
 		charpos := 0
 
 		if i == start.Y && start.Y == end.Y {
-			nchars := utf8.RuneCount(l)
+			nchars := util.CharacterCount(l)
 			start.X = util.Clamp(start.X, 0, nchars)
 			end.X = util.Clamp(end.X, 0, nchars)
 			l = util.SliceStart(l, end.X)
 			l = util.SliceEnd(l, start.X)
 			charpos = start.X
 		} else if i == start.Y {
-			nchars := utf8.RuneCount(l)
+			nchars := util.CharacterCount(l)
 			start.X = util.Clamp(start.X, 0, nchars)
 			l = util.SliceEnd(l, start.X)
 			charpos = start.X
 		} else if i == end.Y {
-			nchars := utf8.RuneCount(l)
+			nchars := util.CharacterCount(l)
 			end.X = util.Clamp(end.X, 0, nchars)
 			l = util.SliceStart(l, end.X)
 		}
@@ -49,6 +55,13 @@ func (b *Buffer) findDown(r *regexp.Regexp, start, end Loc) ([2]Loc, bool) {
 }
 
 func (b *Buffer) findUp(r *regexp.Regexp, start, end Loc) ([2]Loc, bool) {
+	lastcn := util.CharacterCount(b.LineBytes(b.LinesNum() - 1))
+	if start.Y > b.LinesNum()-1 {
+		start.X = lastcn - 1
+	}
+	if end.Y > b.LinesNum()-1 {
+		end.X = lastcn
+	}
 	start.Y = util.Clamp(start.Y, 0, b.LinesNum()-1)
 	end.Y = util.Clamp(end.Y, 0, b.LinesNum()-1)
 
@@ -61,26 +74,27 @@ func (b *Buffer) findUp(r *regexp.Regexp, start, end Loc) ([2]Loc, bool) {
 		charpos := 0
 
 		if i == start.Y && start.Y == end.Y {
-			nchars := utf8.RuneCount(l)
+			nchars := util.CharacterCount(l)
 			start.X = util.Clamp(start.X, 0, nchars)
 			end.X = util.Clamp(end.X, 0, nchars)
 			l = util.SliceStart(l, end.X)
 			l = util.SliceEnd(l, start.X)
 			charpos = start.X
 		} else if i == start.Y {
-			nchars := utf8.RuneCount(l)
+			nchars := util.CharacterCount(l)
 			start.X = util.Clamp(start.X, 0, nchars)
 			l = util.SliceEnd(l, start.X)
 			charpos = start.X
 		} else if i == end.Y {
-			nchars := utf8.RuneCount(l)
+			nchars := util.CharacterCount(l)
 			end.X = util.Clamp(end.X, 0, nchars)
 			l = util.SliceStart(l, end.X)
 		}
 
-		match := r.FindIndex(l)
+		allMatches := r.FindAllIndex(l, -1)
 
-		if match != nil {
+		if allMatches != nil {
+			match := allMatches[len(allMatches)-1]
 			start := Loc{charpos + util.RunePos(l, match[0]), i}
 			end := Loc{charpos + util.RunePos(l, match[1]), i}
 			return [2]Loc{start, end}, true
@@ -120,24 +134,27 @@ func (b *Buffer) FindNext(s string, start, end, from Loc, down bool, useRegex bo
 	if down {
 		l, found = b.findDown(r, from, end)
 		if !found {
-			l, found = b.findDown(r, start, from)
+			l, found = b.findDown(r, start, end)
 		}
 	} else {
 		l, found = b.findUp(r, from, start)
 		if !found {
-			l, found = b.findUp(r, end, from)
+			l, found = b.findUp(r, end, start)
 		}
 	}
 	return l, found, nil
 }
 
 // ReplaceRegex replaces all occurrences of 'search' with 'replace' in the given area
-// and returns the number of replacements made
-func (b *Buffer) ReplaceRegex(start, end Loc, search *regexp.Regexp, replace []byte) int {
+// and returns the number of replacements made and the number of runes
+// added or removed on the last line of the range
+func (b *Buffer) ReplaceRegex(start, end Loc, search *regexp.Regexp, replace []byte) (int, int) {
 	if start.GreaterThan(end) {
 		start, end = end, start
 	}
 
+	netrunes := 0
+
 	found := 0
 	var deltas []Delta
 	for i := start.Y; i <= end.Y; i++ {
@@ -155,16 +172,23 @@ func (b *Buffer) ReplaceRegex(start, end Loc, search *regexp.Regexp, replace []b
 			l = util.SliceStart(l, end.X)
 		}
 		newText := search.ReplaceAllFunc(l, func(in []byte) []byte {
+			result := []byte{}
+			for _, submatches := range search.FindAllSubmatchIndex(in, -1) {
+				result = search.Expand(result, replace, in, submatches)
+			}
 			found++
-			return replace
+			if i == end.Y {
+				netrunes += util.CharacterCount(result) - util.CharacterCount(in)
+			}
+			return result
 		})
 
 		from := Loc{charpos, i}
-		to := Loc{charpos + utf8.RuneCount(l), i}
+		to := Loc{charpos + util.CharacterCount(l), i}
 
 		deltas = append(deltas, Delta{newText, from, to})
 	}
 	b.MultipleReplace(deltas)
 
-	return found
+	return found, netrunes
 }

internal/buffer/serialize.go

@@ -5,12 +5,13 @@ import (
 	"errors"
 	"io"
 	"os"
+	"path/filepath"
 	"time"
 
 	"golang.org/x/text/encoding"
 
-	"github.com/zyedidia/micro/internal/config"
-	"github.com/zyedidia/micro/internal/util"
+	"github.com/zyedidia/micro/v2/internal/config"
+	"github.com/zyedidia/micro/v2/internal/util"
 )
 
 // The SerializedBuffer holds the types that get serialized when a buffer is saved
@@ -30,7 +31,7 @@ func (b *Buffer) Serialize() error {
 		return nil
 	}
 
-	name := config.ConfigDir + "/buffers/" + util.EscapePath(b.AbsPath)
+	name := filepath.Join(config.ConfigDir, "buffers", util.EscapePath(b.AbsPath))
 
 	return overwriteFile(name, encoding.Nop, func(file io.Writer) error {
 		err := gob.NewEncoder(file).Encode(SerializedBuffer{
@@ -39,23 +40,24 @@ func (b *Buffer) Serialize() error {
 			b.ModTime,
 		})
 		return err
-	})
+	}, false)
 }
 
+// Unserialize loads the buffer info from config.ConfigDir/buffers
 func (b *Buffer) Unserialize() error {
 	// If either savecursor or saveundo is turned on, we need to load the serialized information
 	// from ~/.config/micro/buffers
 	if b.Path == "" {
 		return nil
 	}
-	file, err := os.Open(config.ConfigDir + "/buffers/" + util.EscapePath(b.AbsPath))
-	defer file.Close()
+	file, err := os.Open(filepath.Join(config.ConfigDir, "buffers", util.EscapePath(b.AbsPath)))
 	if err == nil {
+		defer file.Close()
 		var buffer SerializedBuffer
 		decoder := gob.NewDecoder(file)
 		err = decoder.Decode(&buffer)
 		if err != nil {
-			return errors.New(err.Error() + "\nYou may want to remove the files in ~/.config/micro/buffers (these files store the information for the 'saveundo' and 'savecursor' options) if this problem persists.")
+			return errors.New(err.Error() + "\nYou may want to remove the files in ~/.config/micro/buffers (these files\nstore the information for the 'saveundo' and 'savecursor' options) if\nthis problem persists.\nThis may be caused by upgrading to version 2.0, and removing the 'buffers'\ndirectory will reset the cursor and undo history and solve the problem.")
 		}
 		if b.Settings["savecursor"].(bool) {
 			b.StartCursor = buffer.Cursor

internal/buffer/settings.go

@@ -1,8 +1,8 @@
 package buffer
 
 import (
-	"github.com/zyedidia/micro/internal/config"
-	"github.com/zyedidia/micro/internal/screen"
+	"github.com/zyedidia/micro/v2/internal/config"
+	"github.com/zyedidia/micro/v2/internal/screen"
 )
 
 func (b *Buffer) SetOptionNative(option string, nativeValue interface{}) error {
@@ -10,14 +10,26 @@ func (b *Buffer) SetOptionNative(option string, nativeValue interface{}) error {
 
 	if option == "fastdirty" {
 		if !nativeValue.(bool) {
-			e := calcHash(b, &b.origHash)
-			if e == ErrFileTooLarge {
-				b.Settings["fastdirty"] = false
+			if !b.Modified() {
+				e := calcHash(b, &b.origHash)
+				if e == ErrFileTooLarge {
+					b.Settings["fastdirty"] = false
+				}
 			}
 		}
 	} else if option == "statusline" {
 		screen.Redraw()
 	} else if option == "filetype" {
+		config.InitRuntimeFiles()
+		err := config.ReadSettings()
+		if err != nil {
+			screen.TermMessage(err)
+		}
+		err = config.InitGlobalSettings()
+		if err != nil {
+			screen.TermMessage(err)
+		}
+		config.InitLocalSettings(b.Settings, b.Path)
 		b.UpdateRules()
 	} else if option == "fileformat" {
 		switch b.Settings["fileformat"].(string) {
@@ -35,8 +47,37 @@ func (b *Buffer) SetOptionNative(option string, nativeValue interface{}) error {
 		}
 	} else if option == "encoding" {
 		b.isModified = true
-	} else if option == "readonly" {
+	} else if option == "readonly" && b.Type.Kind == BTDefault.Kind {
 		b.Type.Readonly = nativeValue.(bool)
+	} else if option == "hlsearch" {
+		for _, buf := range OpenBuffers {
+			if b.SharedBuffer == buf.SharedBuffer {
+				buf.HighlightSearch = nativeValue.(bool)
+			}
+		}
+	} else {
+		for _, pl := range config.Plugins {
+			if option == pl.Name {
+				if nativeValue.(bool) {
+					if !pl.Loaded {
+						pl.Load()
+					}
+					_, err := pl.Call("init")
+					if err != nil && err != config.ErrNoSuchFunction {
+						screen.TermMessage(err)
+					}
+				} else if !nativeValue.(bool) && pl.Loaded {
+					_, err := pl.Call("deinit")
+					if err != nil && err != config.ErrNoSuchFunction {
+						screen.TermMessage(err)
+					}
+				}
+			}
+		}
+ 	}
+
+	if b.OptionCallback != nil {
+		b.OptionCallback(option, nativeValue)
 	}
 
 	return nil

internal/clipboard/clipboard.go

@@ -0,0 +1,163 @@
+package clipboard
+
+import (
+	"errors"
+
+	"github.com/zyedidia/clipper"
+)
+
+type Method int
+
+const (
+	// External relies on external tools for accessing the clipboard
+	// These include xclip, xsel, wl-clipboard for linux, pbcopy/pbpaste on Mac,
+	// and Syscalls on Windows.
+	External Method = iota
+	// Terminal uses the terminal to manage the clipboard via OSC 52. Many
+	// terminals do not support OSC 52, in which case this method won't work.
+	Terminal
+	// Internal just manages the clipboard with an internal buffer and doesn't
+	// attempt to interface with the system clipboard
+	Internal
+)
+
+// CurrentMethod is the method used to store clipboard information
+var CurrentMethod Method = Internal
+
+// A Register is a buffer used to store text. The system clipboard has the 'clipboard'
+// and 'primary' (linux-only) registers, but other registers may be used internal to micro.
+type Register int
+
+const (
+	// ClipboardReg is the main system clipboard
+	ClipboardReg Register = -1
+	// PrimaryReg is the system primary clipboard (linux only)
+	PrimaryReg = -2
+)
+
+var clipboard clipper.Clipboard
+
+// Initialize attempts to initialize the clipboard using the given method
+func Initialize(m Method) error {
+	var err error
+	switch m {
+	case External:
+		clips := make([]clipper.Clipboard, 0, len(clipper.Clipboards)+1)
+		clips = append(clips, &clipper.Custom{
+			Name: "micro-clip",
+		})
+		clips = append(clips, clipper.Clipboards...)
+		clipboard, err = clipper.GetClipboard(clips...)
+	}
+	if err != nil {
+		CurrentMethod = Internal
+	}
+	return err
+}
+
+// SetMethod changes the clipboard access method
+func SetMethod(m string) Method {
+	switch m {
+	case "internal":
+		CurrentMethod = Internal
+	case "external":
+		CurrentMethod = External
+	case "terminal":
+		CurrentMethod = Terminal
+	}
+	return CurrentMethod
+}
+
+// Read reads from a clipboard register
+func Read(r Register) (string, error) {
+	return read(r, CurrentMethod)
+}
+
+// Write writes text to a clipboard register
+func Write(text string, r Register) error {
+	return write(text, r, CurrentMethod)
+}
+
+// ReadMulti reads text from a clipboard register for a certain multi-cursor
+func ReadMulti(r Register, num, ncursors int) (string, error) {
+	clip, err := Read(r)
+	if err != nil {
+		return "", err
+	}
+	if ValidMulti(r, clip, ncursors) {
+		return multi.getText(r, num), nil
+	}
+	return clip, nil
+}
+
+// WriteMulti writes text to a clipboard register for a certain multi-cursor
+func WriteMulti(text string, r Register, num int, ncursors int) error {
+	return writeMulti(text, r, num, ncursors, CurrentMethod)
+}
+
+// ValidMulti checks if the internal multi-clipboard is valid and up-to-date
+// with the system clipboard
+func ValidMulti(r Register, clip string, ncursors int) bool {
+	return multi.isValid(r, clip, ncursors)
+}
+
+func writeMulti(text string, r Register, num int, ncursors int, m Method) error {
+	multi.writeText(text, r, num, ncursors)
+	return write(multi.getAllText(r), r, m)
+}
+
+func read(r Register, m Method) (string, error) {
+	switch m {
+	case External:
+		switch r {
+		case ClipboardReg:
+			b, e := clipboard.ReadAll(clipper.RegClipboard)
+			return string(b), e
+		case PrimaryReg:
+			b, e := clipboard.ReadAll(clipper.RegPrimary)
+			return string(b), e
+		default:
+			return internal.read(r), nil
+		}
+	case Internal:
+		return internal.read(r), nil
+	case Terminal:
+		switch r {
+		case ClipboardReg:
+			// terminal paste works by sending an esc sequence to the
+			// terminal to trigger a paste event
+			return terminal.read("clipboard")
+		case PrimaryReg:
+			return terminal.read("primary")
+		default:
+			return internal.read(r), nil
+		}
+	}
+	return "", errors.New("Invalid clipboard method")
+}
+
+func write(text string, r Register, m Method) error {
+	switch m {
+	case External:
+		switch r {
+		case ClipboardReg:
+			return clipboard.WriteAll(clipper.RegClipboard, []byte(text))
+		case PrimaryReg:
+			return clipboard.WriteAll(clipper.RegPrimary, []byte(text))
+		default:
+			internal.write(text, r)
+		}
+	case Internal:
+		internal.write(text, r)
+	case Terminal:
+		switch r {
+		case ClipboardReg:
+			return terminal.write(text, "c")
+		case PrimaryReg:
+			return terminal.write(text, "p")
+		default:
+			internal.write(text, r)
+		}
+	}
+	return nil
+}

internal/clipboard/internal.go

@@ -0,0 +1,17 @@
+package clipboard
+
+type internalClipboard map[Register]string
+
+var internal internalClipboard
+
+func init() {
+	internal = make(internalClipboard)
+}
+
+func (c internalClipboard) read(r Register) string {
+	return c[r]
+}
+
+func (c internalClipboard) write(text string, r Register) {
+	c[r] = text
+}

internal/clipboard/multi.go

@@ -0,0 +1,63 @@
+package clipboard
+
+import (
+	"bytes"
+)
+
+// For storing multi cursor clipboard contents
+type multiClipboard map[Register][]string
+
+var multi multiClipboard
+
+func (c multiClipboard) getAllText(r Register) string {
+	content := c[r]
+	if content == nil {
+		return ""
+	}
+
+	buf := &bytes.Buffer{}
+	for _, s := range content {
+		buf.WriteString(s)
+	}
+	return buf.String()
+}
+
+func (c multiClipboard) getText(r Register, num int) string {
+	content := c[r]
+	if content == nil || len(content) <= num {
+		return ""
+	}
+
+	return content[num]
+}
+
+// isValid checks if the text stored in this multi-clipboard is the same as the
+// text stored in the system clipboard (provided as an argument), and therefore
+// if it is safe to use the multi-clipboard for pasting instead of the system
+// clipboard.
+func (c multiClipboard) isValid(r Register, clipboard string, ncursors int) bool {
+	content := c[r]
+	if content == nil || len(content) != ncursors {
+		return false
+	}
+
+	return clipboard == c.getAllText(r)
+}
+
+func (c multiClipboard) writeText(text string, r Register, num int, ncursors int) {
+	content := c[r]
+	if content == nil || len(content) != ncursors {
+		content = make([]string, ncursors, ncursors)
+		c[r] = content
+	}
+
+	if num >= ncursors {
+		return
+	}
+
+	content[num] = text
+}
+
+func init() {
+	multi = make(multiClipboard)
+}

internal/clipboard/terminal.go

@@ -0,0 +1,33 @@
+package clipboard
+
+import (
+	"errors"
+	"time"
+
+	"github.com/zyedidia/micro/v2/internal/screen"
+	"github.com/zyedidia/tcell/v2"
+)
+
+type terminalClipboard struct{}
+
+var terminal terminalClipboard
+
+func (t terminalClipboard) read(reg string) (string, error) {
+	screen.Screen.GetClipboard(reg)
+	// wait at most 200ms for response
+	for {
+		select {
+		case event := <-screen.Events:
+			e, ok := event.(*tcell.EventPaste)
+			if ok {
+				return e.Text(), nil
+			}
+		case <-time.After(200 * time.Millisecond):
+			return "", errors.New("No clipboard received from terminal")
+		}
+	}
+}
+
+func (t terminalClipboard) write(text, reg string) error {
+	return screen.Screen.SetClipboard(text, reg)
+}

internal/config/autosave.go

@@ -31,14 +31,13 @@ func GetAutoTime() int {
 func StartAutoSave() {
 	go func() {
 		for {
-			if autotime < 1 {
-				break
-			}
-			time.Sleep(time.Duration(autotime) * time.Second)
-			// it's possible autotime was changed while sleeping
-			if autotime < 1 {
+			autolock.Lock()
+			a := autotime
+			autolock.Unlock()
+			if a < 1 {
 				break
 			}
+			time.Sleep(time.Duration(a) * time.Second)
 			Autosave <- true
 		}
 	}()

internal/config/colorscheme.go

@@ -6,13 +6,13 @@ import (
 	"strconv"
 	"strings"
 
-	"github.com/zyedidia/tcell"
+	"github.com/zyedidia/tcell/v2"
 )
 
-// Micro's default style
+// DefStyle is Micro's default style
 var DefStyle tcell.Style = tcell.StyleDefault
 
-// The current colorscheme
+// Colorscheme is the current colorscheme
 var Colorscheme map[string]tcell.Style
 
 // GetColor takes in a syntax group and returns the colorscheme's style for that group
@@ -117,16 +117,11 @@ func ParseColorscheme(text string) (map[string]tcell.Style, error) {
 
 // StringToStyle returns a style from a string
 // The strings must be in the format "extra foregroundcolor,backgroundcolor"
-// The 'extra' can be bold, reverse, or underline
+// The 'extra' can be bold, reverse, italic or underline
 func StringToStyle(str string) tcell.Style {
 	var fg, bg string
 	spaceSplit := strings.Split(str, " ")
-	var split []string
-	if len(spaceSplit) > 1 {
-		split = strings.Split(spaceSplit[1], ",")
-	} else {
-		split = strings.Split(str, ",")
-	}
+	split := strings.Split(spaceSplit[len(spaceSplit)-1], ",")
 	if len(split) > 1 {
 		fg, bg = split[0], split[1]
 	} else {
@@ -136,21 +131,31 @@ func StringToStyle(str string) tcell.Style {
 	bg = strings.TrimSpace(bg)
 
 	var fgColor, bgColor tcell.Color
-	if fg == "" {
+	var ok bool
+	if fg == "" || fg == "default" {
 		fgColor, _, _ = DefStyle.Decompose()
 	} else {
-		fgColor = StringToColor(fg)
+		fgColor, ok = StringToColor(fg)
+		if !ok {
+			fgColor, _, _ = DefStyle.Decompose()
+		}
 	}
-	if bg == "" {
+	if bg == "" || bg == "default" {
 		_, bgColor, _ = DefStyle.Decompose()
 	} else {
-		bgColor = StringToColor(bg)
+		bgColor, ok = StringToColor(bg)
+		if !ok {
+			_, bgColor, _ = DefStyle.Decompose()
+		}
 	}
 
 	style := DefStyle.Foreground(fgColor).Background(bgColor)
 	if strings.Contains(str, "bold") {
 		style = style.Bold(true)
 	}
+	if strings.Contains(str, "italic") {
+		style = style.Italic(true)
+	}
 	if strings.Contains(str, "reverse") {
 		style = style.Reverse(true)
 	}
@@ -162,95 +167,59 @@ func StringToStyle(str string) tcell.Style {
 
 // StringToColor returns a tcell color from a string representation of a color
 // We accept either bright... or light... to mean the brighter version of a color
-func StringToColor(str string) tcell.Color {
+func StringToColor(str string) (tcell.Color, bool) {
 	switch str {
 	case "black":
-		return tcell.ColorBlack
+		return tcell.ColorBlack, true
 	case "red":
-		return tcell.ColorMaroon
+		return tcell.ColorMaroon, true
 	case "green":
-		return tcell.ColorGreen
+		return tcell.ColorGreen, true
 	case "yellow":
-		return tcell.ColorOlive
+		return tcell.ColorOlive, true
 	case "blue":
-		return tcell.ColorNavy
+		return tcell.ColorNavy, true
 	case "magenta":
-		return tcell.ColorPurple
+		return tcell.ColorPurple, true
 	case "cyan":
-		return tcell.ColorTeal
+		return tcell.ColorTeal, true
 	case "white":
-		return tcell.ColorSilver
+		return tcell.ColorSilver, true
 	case "brightblack", "lightblack":
-		return tcell.ColorGray
+		return tcell.ColorGray, true
 	case "brightred", "lightred":
-		return tcell.ColorRed
+		return tcell.ColorRed, true
 	case "brightgreen", "lightgreen":
-		return tcell.ColorLime
+		return tcell.ColorLime, true
 	case "brightyellow", "lightyellow":
-		return tcell.ColorYellow
+		return tcell.ColorYellow, true
 	case "brightblue", "lightblue":
-		return tcell.ColorBlue
+		return tcell.ColorBlue, true
 	case "brightmagenta", "lightmagenta":
-		return tcell.ColorFuchsia
+		return tcell.ColorFuchsia, true
 	case "brightcyan", "lightcyan":
-		return tcell.ColorAqua
+		return tcell.ColorAqua, true
 	case "brightwhite", "lightwhite":
-		return tcell.ColorWhite
+		return tcell.ColorWhite, true
 	case "default":
-		return tcell.ColorDefault
+		return tcell.ColorDefault, true
 	default:
 		// Check if this is a 256 color
 		if num, err := strconv.Atoi(str); err == nil {
-			return GetColor256(num)
+			return GetColor256(num), true
 		}
-		// Probably a truecolor hex value
-		return tcell.GetColor(str)
+		// Check if this is a truecolor hex value
+		if len(str) == 7 && str[0] == '#' {
+			return tcell.GetColor(str), true
+		}
+		return tcell.ColorDefault, false
 	}
 }
 
 // GetColor256 returns the tcell color for a number between 0 and 255
 func GetColor256(color int) tcell.Color {
-	colors := []tcell.Color{tcell.ColorBlack, tcell.ColorMaroon, tcell.ColorGreen,
-		tcell.ColorOlive, tcell.ColorNavy, tcell.ColorPurple,
-		tcell.ColorTeal, tcell.ColorSilver, tcell.ColorGray,
-		tcell.ColorRed, tcell.ColorLime, tcell.ColorYellow,
-		tcell.ColorBlue, tcell.ColorFuchsia, tcell.ColorAqua,
-		tcell.ColorWhite, tcell.Color16, tcell.Color17, tcell.Color18, tcell.Color19, tcell.Color20,
-		tcell.Color21, tcell.Color22, tcell.Color23, tcell.Color24, tcell.Color25, tcell.Color26, tcell.Color27, tcell.Color28,
-		tcell.Color29, tcell.Color30, tcell.Color31, tcell.Color32, tcell.Color33, tcell.Color34, tcell.Color35, tcell.Color36,
-		tcell.Color37, tcell.Color38, tcell.Color39, tcell.Color40, tcell.Color41, tcell.Color42, tcell.Color43, tcell.Color44,
-		tcell.Color45, tcell.Color46, tcell.Color47, tcell.Color48, tcell.Color49, tcell.Color50, tcell.Color51, tcell.Color52,
-		tcell.Color53, tcell.Color54, tcell.Color55, tcell.Color56, tcell.Color57, tcell.Color58, tcell.Color59, tcell.Color60,
-		tcell.Color61, tcell.Color62, tcell.Color63, tcell.Color64, tcell.Color65, tcell.Color66, tcell.Color67, tcell.Color68,
-		tcell.Color69, tcell.Color70, tcell.Color71, tcell.Color72, tcell.Color73, tcell.Color74, tcell.Color75, tcell.Color76,
-		tcell.Color77, tcell.Color78, tcell.Color79, tcell.Color80, tcell.Color81, tcell.Color82, tcell.Color83, tcell.Color84,
-		tcell.Color85, tcell.Color86, tcell.Color87, tcell.Color88, tcell.Color89, tcell.Color90, tcell.Color91, tcell.Color92,
-		tcell.Color93, tcell.Color94, tcell.Color95, tcell.Color96, tcell.Color97, tcell.Color98, tcell.Color99, tcell.Color100,
-		tcell.Color101, tcell.Color102, tcell.Color103, tcell.Color104, tcell.Color105, tcell.Color106, tcell.Color107, tcell.Color108,
-		tcell.Color109, tcell.Color110, tcell.Color111, tcell.Color112, tcell.Color113, tcell.Color114, tcell.Color115, tcell.Color116,
-		tcell.Color117, tcell.Color118, tcell.Color119, tcell.Color120, tcell.Color121, tcell.Color122, tcell.Color123, tcell.Color124,
-		tcell.Color125, tcell.Color126, tcell.Color127, tcell.Color128, tcell.Color129, tcell.Color130, tcell.Color131, tcell.Color132,
-		tcell.Color133, tcell.Color134, tcell.Color135, tcell.Color136, tcell.Color137, tcell.Color138, tcell.Color139, tcell.Color140,
-		tcell.Color141, tcell.Color142, tcell.Color143, tcell.Color144, tcell.Color145, tcell.Color146, tcell.Color147, tcell.Color148,
-		tcell.Color149, tcell.Color150, tcell.Color151, tcell.Color152, tcell.Color153, tcell.Color154, tcell.Color155, tcell.Color156,
-		tcell.Color157, tcell.Color158, tcell.Color159, tcell.Color160, tcell.Color161, tcell.Color162, tcell.Color163, tcell.Color164,
-		tcell.Color165, tcell.Color166, tcell.Color167, tcell.Color168, tcell.Color169, tcell.Color170, tcell.Color171, tcell.Color172,
-		tcell.Color173, tcell.Color174, tcell.Color175, tcell.Color176, tcell.Color177, tcell.Color178, tcell.Color179, tcell.Color180,
-		tcell.Color181, tcell.Color182, tcell.Color183, tcell.Color184, tcell.Color185, tcell.Color186, tcell.Color187, tcell.Color188,
-		tcell.Color189, tcell.Color190, tcell.Color191, tcell.Color192, tcell.Color193, tcell.Color194, tcell.Color195, tcell.Color196,
-		tcell.Color197, tcell.Color198, tcell.Color199, tcell.Color200, tcell.Color201, tcell.Color202, tcell.Color203, tcell.Color204,
-		tcell.Color205, tcell.Color206, tcell.Color207, tcell.Color208, tcell.Color209, tcell.Color210, tcell.Color211, tcell.Color212,
-		tcell.Color213, tcell.Color214, tcell.Color215, tcell.Color216, tcell.Color217, tcell.Color218, tcell.Color219, tcell.Color220,
-		tcell.Color221, tcell.Color222, tcell.Color223, tcell.Color224, tcell.Color225, tcell.Color226, tcell.Color227, tcell.Color228,
-		tcell.Color229, tcell.Color230, tcell.Color231, tcell.Color232, tcell.Color233, tcell.Color234, tcell.Color235, tcell.Color236,
-		tcell.Color237, tcell.Color238, tcell.Color239, tcell.Color240, tcell.Color241, tcell.Color242, tcell.Color243, tcell.Color244,
-		tcell.Color245, tcell.Color246, tcell.Color247, tcell.Color248, tcell.Color249, tcell.Color250, tcell.Color251, tcell.Color252,
-		tcell.Color253, tcell.Color254, tcell.Color255,
+	if color == 0 {
+		return tcell.ColorDefault
 	}
-
-	if color >= 0 && color < len(colors) {
-		return colors[color]
-	}
-
-	return tcell.ColorDefault
+	return tcell.PaletteColor(color)
 }

internal/config/colorscheme_test.go

@@ -4,7 +4,7 @@ import (
 	"testing"
 
 	"github.com/stretchr/testify/assert"
-	"github.com/zyedidia/tcell"
+	"github.com/zyedidia/tcell/v2"
 )
 
 func TestSimpleStringToStyle(t *testing.T) {
@@ -26,6 +26,18 @@ func TestAttributeStringToStyle(t *testing.T) {
 	assert.NotEqual(t, 0, attr&tcell.AttrBold)
 }
 
+func TestMultiAttributesStringToStyle(t *testing.T) {
+	s := StringToStyle("bold italic underline cyan,brightcyan")
+
+	fg, bg, attr := s.Decompose()
+
+	assert.Equal(t, tcell.ColorTeal, fg)
+	assert.Equal(t, tcell.ColorAqua, bg)
+	assert.NotEqual(t, 0, attr&tcell.AttrBold)
+	assert.NotEqual(t, 0, attr&tcell.AttrItalic)
+	assert.NotEqual(t, 0, attr&tcell.AttrUnderline)
+}
+
 func TestColor256StringToStyle(t *testing.T) {
 	s := StringToStyle("128,60")
 

internal/config/config.go

@@ -3,6 +3,7 @@ package config
 import (
 	"errors"
 	"os"
+	"path/filepath"
 
 	homedir "github.com/mitchellh/go-homedir"
 )
@@ -24,10 +25,10 @@ func InitConfigDir(flagConfigDir string) error {
 			if err != nil {
 				return errors.New("Error finding your home directory\nCan't load config files: " + err.Error())
 			}
-			xdgHome = home + "/.config"
+			xdgHome = filepath.Join(home, ".config")
 		}
 
-		microHome = xdgHome + "/micro"
+		microHome = filepath.Join(xdgHome, "micro")
 	}
 	ConfigDir = microHome
 

internal/config/globals.go

@@ -4,4 +4,12 @@ const (
 	DoubleClickThreshold = 400 // How many milliseconds to wait before a second click is not a double click
 )
 
-var Bindings map[string]string
+var Bindings map[string]map[string]string
+
+func init() {
+	Bindings = map[string]map[string]string{
+		"command":  make(map[string]string),
+		"buffer":   make(map[string]string),
+		"terminal": make(map[string]string),
+	}
+}

internal/config/plugin.go

@@ -2,11 +2,13 @@ package config
 
 import (
 	"errors"
+	"log"
 
 	lua "github.com/yuin/gopher-lua"
-	ulua "github.com/zyedidia/micro/internal/lua"
+	ulua "github.com/zyedidia/micro/v2/internal/lua"
 )
 
+// ErrNoSuchFunction is returned when Call is executed on a function that does not exist
 var ErrNoSuchFunction = errors.New("No such function exists")
 
 // LoadAllPlugins loads all detected plugins (in runtime/plugins and ConfigDir/plugins)
@@ -26,7 +28,7 @@ func LoadAllPlugins() error {
 func RunPluginFn(fn string, args ...lua.LValue) error {
 	var reterr error
 	for _, p := range Plugins {
-		if !p.IsEnabled() {
+		if !p.IsLoaded() {
 			continue
 		}
 		_, err := p.Call(fn, args...)
@@ -40,11 +42,11 @@ func RunPluginFn(fn string, args ...lua.LValue) error {
 // RunPluginFnBool runs a function in all plugins and returns
 // false if any one of them returned false
 // also returns an error if any of the plugins had an error
-func RunPluginFnBool(fn string, args ...lua.LValue) (bool, error) {
+func RunPluginFnBool(settings map[string]interface{}, fn string, args ...lua.LValue) (bool, error) {
 	var reterr error
 	retbool := true
 	for _, p := range Plugins {
-		if !p.IsEnabled() {
+		if !p.IsLoaded() || (settings != nil && settings[p.Name] == false) {
 			continue
 		}
 		val, err := p.Call(fn, args...)
@@ -55,38 +57,40 @@ func RunPluginFnBool(fn string, args ...lua.LValue) (bool, error) {
 			reterr = errors.New("Plugin " + p.Name + ": " + err.Error())
 			continue
 		}
-		if v, ok := val.(lua.LBool); !ok {
-			reterr = errors.New(p.Name + "." + fn + " should return a boolean")
-		} else {
+		if v, ok := val.(lua.LBool); ok {
 			retbool = retbool && bool(v)
 		}
 	}
 	return retbool, reterr
 }
 
+// Plugin stores information about the source files/info for a plugin
 type Plugin struct {
 	DirName string        // name of plugin folder
 	Name    string        // name of plugin
 	Info    *PluginInfo   // json file containing info
 	Srcs    []RuntimeFile // lua files
 	Loaded  bool
-	Default bool // pre-installed plugin
+	Default bool          // pre-installed plugin
 }
 
-func (p *Plugin) IsEnabled() bool {
+// IsLoaded returns if a plugin is enabled
+func (p *Plugin) IsLoaded() bool {
 	if v, ok := GlobalSettings[p.Name]; ok {
 		return v.(bool) && p.Loaded
 	}
 	return true
 }
 
+// Plugins is a list of all detected plugins (enabled or disabled)
 var Plugins []*Plugin
 
+// Load creates an option for the plugin and runs all source files
 func (p *Plugin) Load() error {
+	if v, ok := GlobalSettings[p.Name]; ok && !v.(bool) {
+		return nil
+	}
 	for _, f := range p.Srcs {
-		if v, ok := GlobalSettings[p.Name]; ok && !v.(bool) {
-			return nil
-		}
 		dat, err := f.Data()
 		if err != nil {
 			return err
@@ -95,14 +99,19 @@ func (p *Plugin) Load() error {
 		if err != nil {
 			return err
 		}
-		p.Loaded = true
-		RegisterGlobalOption(p.Name, true)
 	}
+	p.Loaded = true
+	RegisterCommonOption(p.Name, true)
 	return nil
 }
 
+// Call calls a given function in this plugin
 func (p *Plugin) Call(fn string, args ...lua.LValue) (lua.LValue, error) {
 	plug := ulua.L.GetGlobal(p.Name)
+	if plug == lua.LNil {
+		log.Println("Plugin does not exist:", p.Name, "at", p.DirName, ":", p)
+		return nil, nil
+	}
 	luafn := ulua.L.GetField(plug, fn)
 	if luafn == lua.LNil {
 		return nil, ErrNoSuchFunction
@@ -120,7 +129,23 @@ func (p *Plugin) Call(fn string, args ...lua.LValue) (lua.LValue, error) {
 	return ret, nil
 }
 
+// FindPlugin returns the plugin with the given name
 func FindPlugin(name string) *Plugin {
+	var pl *Plugin
+	for _, p := range Plugins {
+		if !p.IsLoaded() {
+			continue
+		}
+		if p.Name == name {
+			pl = p
+			break
+		}
+	}
+	return pl
+}
+
+// FindAnyPlugin does not require the plugin to be enabled
+func FindAnyPlugin(name string) *Plugin {
 	var pl *Plugin
 	for _, p := range Plugins {
 		if p.Name == name {

internal/config/plugin_installer.go

@@ -0,0 +1,710 @@
+package config
+
+import (
+	"archive/zip"
+	"bytes"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"net/http"
+	"os"
+	"path/filepath"
+	"sort"
+	"strings"
+	"sync"
+
+	"github.com/blang/semver"
+	lua "github.com/yuin/gopher-lua"
+	"github.com/zyedidia/json5"
+	ulua "github.com/zyedidia/micro/v2/internal/lua"
+	"github.com/zyedidia/micro/v2/internal/util"
+)
+
+var (
+	allPluginPackages PluginPackages
+)
+
+// CorePluginName is a plugin dependency name for the micro core.
+const CorePluginName = "micro"
+
+// PluginChannel contains an url to a json list of PluginRepository
+type PluginChannel string
+
+// PluginChannels is a slice of PluginChannel
+type PluginChannels []PluginChannel
+
+// PluginRepository contains an url to json file containing PluginPackages
+type PluginRepository string
+
+// PluginPackage contains the meta-data of a plugin and all available versions
+type PluginPackage struct {
+	Name        string
+	Description string
+	Author      string
+	Tags        []string
+	Versions    PluginVersions
+}
+
+// PluginPackages is a list of PluginPackage instances.
+type PluginPackages []*PluginPackage
+
+// PluginVersion descripes a version of a PluginPackage. Containing a version, download url and also dependencies.
+type PluginVersion struct {
+	pack    *PluginPackage
+	Version semver.Version
+	Url     string
+	Require PluginDependencies
+}
+
+func (pv *PluginVersion) Pack() *PluginPackage {
+	return pv.pack
+}
+
+// PluginVersions is a slice of PluginVersion
+type PluginVersions []*PluginVersion
+
+// PluginDependency descripes a dependency to another plugin or micro itself.
+type PluginDependency struct {
+	Name  string
+	Range semver.Range
+}
+
+// PluginDependencies is a slice of PluginDependency
+type PluginDependencies []*PluginDependency
+
+func (pp *PluginPackage) String() string {
+	buf := new(bytes.Buffer)
+	buf.WriteString("Plugin: ")
+	buf.WriteString(pp.Name)
+	buf.WriteRune('\n')
+	if pp.Author != "" {
+		buf.WriteString("Author: ")
+		buf.WriteString(pp.Author)
+		buf.WriteRune('\n')
+	}
+	if pp.Description != "" {
+		buf.WriteRune('\n')
+		buf.WriteString(pp.Description)
+	}
+	return buf.String()
+}
+
+func fetchAllSources(count int, fetcher func(i int) PluginPackages) PluginPackages {
+	wgQuery := new(sync.WaitGroup)
+	wgQuery.Add(count)
+
+	results := make(chan PluginPackages)
+
+	wgDone := new(sync.WaitGroup)
+	wgDone.Add(1)
+	var packages PluginPackages
+	for i := 0; i < count; i++ {
+		go func(i int) {
+			results <- fetcher(i)
+			wgQuery.Done()
+		}(i)
+	}
+	go func() {
+		packages = make(PluginPackages, 0)
+		for res := range results {
+			packages = append(packages, res...)
+		}
+		wgDone.Done()
+	}()
+	wgQuery.Wait()
+	close(results)
+	wgDone.Wait()
+	return packages
+}
+
+// Fetch retrieves all available PluginPackages from the given channels
+func (pc PluginChannels) Fetch(out io.Writer) PluginPackages {
+	return fetchAllSources(len(pc), func(i int) PluginPackages {
+		return pc[i].Fetch(out)
+	})
+}
+
+// Fetch retrieves all available PluginPackages from the given channel
+func (pc PluginChannel) Fetch(out io.Writer) PluginPackages {
+	resp, err := http.Get(string(pc))
+	if err != nil {
+		fmt.Fprintln(out, "Failed to query plugin channel:\n", err)
+		return PluginPackages{}
+	}
+	defer resp.Body.Close()
+	decoder := json5.NewDecoder(resp.Body)
+
+	var repositories []PluginRepository
+	if err := decoder.Decode(&repositories); err != nil {
+		fmt.Fprintln(out, "Failed to decode channel data:\n", err)
+		return PluginPackages{}
+	}
+	return fetchAllSources(len(repositories), func(i int) PluginPackages {
+		return repositories[i].Fetch(out)
+	})
+}
+
+// Fetch retrieves all available PluginPackages from the given repository
+func (pr PluginRepository) Fetch(out io.Writer) PluginPackages {
+	resp, err := http.Get(string(pr))
+	if err != nil {
+		fmt.Fprintln(out, "Failed to query plugin repository:\n", err)
+		return PluginPackages{}
+	}
+	defer resp.Body.Close()
+	decoder := json5.NewDecoder(resp.Body)
+
+	var plugins PluginPackages
+	if err := decoder.Decode(&plugins); err != nil {
+		fmt.Fprintln(out, "Failed to decode repository data:\n", err)
+		return PluginPackages{}
+	}
+	if len(plugins) > 0 {
+		return PluginPackages{plugins[0]}
+	}
+	return nil
+	// return plugins
+}
+
+// UnmarshalJSON unmarshals raw json to a PluginVersion
+func (pv *PluginVersion) UnmarshalJSON(data []byte) error {
+	var values struct {
+		Version semver.Version
+		Url     string
+		Require map[string]string
+	}
+
+	if err := json5.Unmarshal(data, &values); err != nil {
+		return err
+	}
+	pv.Version = values.Version
+	pv.Url = values.Url
+	pv.Require = make(PluginDependencies, 0)
+
+	for k, v := range values.Require {
+		// don't add the dependency if it's the core and
+		// we have a unknown version number.
+		// in that case just accept that dependency (which equals to not adding it.)
+		if k != CorePluginName || !isUnknownCoreVersion() {
+			if vRange, err := semver.ParseRange(v); err == nil {
+				pv.Require = append(pv.Require, &PluginDependency{k, vRange})
+			}
+		}
+	}
+	return nil
+}
+
+// UnmarshalJSON unmarshals raw json to a PluginPackage
+func (pp *PluginPackage) UnmarshalJSON(data []byte) error {
+	var values struct {
+		Name        string
+		Description string
+		Author      string
+		Tags        []string
+		Versions    PluginVersions
+	}
+	if err := json5.Unmarshal(data, &values); err != nil {
+		return err
+	}
+	pp.Name = values.Name
+	pp.Description = values.Description
+	pp.Author = values.Author
+	pp.Tags = values.Tags
+	pp.Versions = values.Versions
+	for _, v := range pp.Versions {
+		v.pack = pp
+	}
+	return nil
+}
+
+// GetAllPluginPackages gets all PluginPackages which may be available.
+func GetAllPluginPackages(out io.Writer) PluginPackages {
+	if allPluginPackages == nil {
+		getOption := func(name string) []string {
+			data := GetGlobalOption(name)
+			if strs, ok := data.([]string); ok {
+				return strs
+			}
+			if ifs, ok := data.([]interface{}); ok {
+				result := make([]string, len(ifs))
+				for i, urlIf := range ifs {
+					if url, ok := urlIf.(string); ok {
+						result[i] = url
+					} else {
+						return nil
+					}
+				}
+				return result
+			}
+			return nil
+		}
+
+		channels := PluginChannels{}
+		for _, url := range getOption("pluginchannels") {
+			channels = append(channels, PluginChannel(url))
+		}
+		repos := []PluginRepository{}
+		for _, url := range getOption("pluginrepos") {
+			repos = append(repos, PluginRepository(url))
+		}
+		allPluginPackages = fetchAllSources(len(repos)+1, func(i int) PluginPackages {
+			if i == 0 {
+				return channels.Fetch(out)
+			}
+			return repos[i-1].Fetch(out)
+		})
+	}
+	return allPluginPackages
+}
+
+func (pv PluginVersions) find(ppName string) *PluginVersion {
+	for _, v := range pv {
+		if v.pack.Name == ppName {
+			return v
+		}
+	}
+	return nil
+}
+
+// Len returns the number of pluginversions in this slice
+func (pv PluginVersions) Len() int {
+	return len(pv)
+}
+
+// Swap two entries of the slice
+func (pv PluginVersions) Swap(i, j int) {
+	pv[i], pv[j] = pv[j], pv[i]
+}
+
+// Less returns true if the version at position i is greater then the version at position j (used for sorting)
+func (pv PluginVersions) Less(i, j int) bool {
+	return pv[i].Version.GT(pv[j].Version)
+}
+
+// Match returns true if the package matches a given search text
+func (pp PluginPackage) Match(text string) bool {
+	text = strings.ToLower(text)
+	for _, t := range pp.Tags {
+		if strings.ToLower(t) == text {
+			return true
+		}
+	}
+	if strings.Contains(strings.ToLower(pp.Name), text) {
+		return true
+	}
+
+	if strings.Contains(strings.ToLower(pp.Description), text) {
+		return true
+	}
+
+	return false
+}
+
+// IsInstallable returns true if the package can be installed.
+func (pp PluginPackage) IsInstallable(out io.Writer) error {
+	_, err := GetAllPluginPackages(out).Resolve(GetInstalledVersions(true), PluginDependencies{
+		&PluginDependency{
+			Name:  pp.Name,
+			Range: semver.Range(func(v semver.Version) bool { return true }),
+		}})
+	return err
+}
+
+// SearchPlugin retrieves a list of all PluginPackages which match the given search text and
+// could be or are already installed
+func SearchPlugin(out io.Writer, texts []string) (plugins PluginPackages) {
+	plugins = make(PluginPackages, 0)
+
+pluginLoop:
+	for _, pp := range GetAllPluginPackages(out) {
+		for _, text := range texts {
+			if !pp.Match(text) {
+				continue pluginLoop
+			}
+		}
+
+		if err := pp.IsInstallable(out); err == nil {
+			plugins = append(plugins, pp)
+		}
+	}
+	return
+}
+
+func isUnknownCoreVersion() bool {
+	_, err := semver.ParseTolerant(util.Version)
+	return err != nil
+}
+
+func newStaticPluginVersion(name, version string) *PluginVersion {
+	vers, err := semver.ParseTolerant(version)
+
+	if err != nil {
+		if vers, err = semver.ParseTolerant("0.0.0-" + version); err != nil {
+			vers = semver.MustParse("0.0.0-unknown")
+		}
+	}
+	pl := &PluginPackage{
+		Name: name,
+	}
+	pv := &PluginVersion{
+		pack:    pl,
+		Version: vers,
+	}
+	pl.Versions = PluginVersions{pv}
+	return pv
+}
+
+// GetInstalledVersions returns a list of all currently installed plugins including an entry for
+// micro itself. This can be used to resolve dependencies.
+func GetInstalledVersions(withCore bool) PluginVersions {
+	result := PluginVersions{}
+	if withCore {
+		result = append(result, newStaticPluginVersion(CorePluginName, util.Version))
+	}
+
+	for _, p := range Plugins {
+		if !p.IsLoaded() {
+			continue
+		}
+		version := GetInstalledPluginVersion(p.Name)
+		if pv := newStaticPluginVersion(p.Name, version); pv != nil {
+			result = append(result, pv)
+		}
+	}
+
+	return result
+}
+
+// GetInstalledPluginVersion returns the string of the exported VERSION variable of a loaded plugin
+func GetInstalledPluginVersion(name string) string {
+	plugin := ulua.L.GetGlobal(name)
+	if plugin != lua.LNil {
+		version := ulua.L.GetField(plugin, "VERSION")
+		if str, ok := version.(lua.LString); ok {
+			return string(str)
+
+		}
+	}
+	return ""
+}
+
+// DownloadAndInstall downloads and installs the given plugin and version
+func (pv *PluginVersion) DownloadAndInstall(out io.Writer) error {
+	fmt.Fprintf(out, "Downloading %q (%s) from %q\n", pv.pack.Name, pv.Version, pv.Url)
+	resp, err := http.Get(pv.Url)
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+	data, err := ioutil.ReadAll(resp.Body)
+	if err != nil {
+		return err
+	}
+	zipbuf := bytes.NewReader(data)
+	z, err := zip.NewReader(zipbuf, zipbuf.Size())
+	if err != nil {
+		return err
+	}
+	targetDir := filepath.Join(ConfigDir, "plug", pv.pack.Name)
+	dirPerm := os.FileMode(0755)
+	if err = os.MkdirAll(targetDir, dirPerm); err != nil {
+		return err
+	}
+
+	// Check if all files in zip are in the same directory.
+	// this might be the case if the plugin zip contains the whole plugin dir
+	// instead of its content.
+	var prefix string
+	allPrefixed := false
+	for i, f := range z.File {
+		parts := strings.Split(f.Name, "/")
+		if i == 0 {
+			prefix = parts[0]
+		} else if parts[0] != prefix {
+			allPrefixed = false
+			break
+		} else {
+			// switch to true since we have at least a second file
+			allPrefixed = true
+		}
+	}
+
+	// Install files and directory's
+	for _, f := range z.File {
+		parts := strings.Split(f.Name, "/")
+		if allPrefixed {
+			parts = parts[1:]
+		}
+
+		targetName := filepath.Join(targetDir, filepath.Join(parts...))
+		if f.FileInfo().IsDir() {
+			if err := os.MkdirAll(targetName, dirPerm); err != nil {
+				return err
+			}
+		} else {
+			basepath := filepath.Dir(targetName)
+
+			if err := os.MkdirAll(basepath, dirPerm); err != nil {
+				return err
+			}
+
+			content, err := f.Open()
+			if err != nil {
+				return err
+			}
+			defer content.Close()
+			target, err := os.Create(targetName)
+			if err != nil {
+				return err
+			}
+			defer target.Close()
+			if _, err = io.Copy(target, content); err != nil {
+				return err
+			}
+		}
+	}
+	return nil
+}
+
+func (pl PluginPackages) Get(name string) *PluginPackage {
+	for _, p := range pl {
+		if p.Name == name {
+			return p
+		}
+	}
+	return nil
+}
+
+func (pl PluginPackages) GetAllVersions(name string) PluginVersions {
+	result := make(PluginVersions, 0)
+	p := pl.Get(name)
+	if p != nil {
+		result = append(result, p.Versions...)
+	}
+	return result
+}
+
+func (req PluginDependencies) Join(other PluginDependencies) PluginDependencies {
+	m := make(map[string]*PluginDependency)
+	for _, r := range req {
+		m[r.Name] = r
+	}
+	for _, o := range other {
+		cur, ok := m[o.Name]
+		if ok {
+			m[o.Name] = &PluginDependency{
+				o.Name,
+				o.Range.AND(cur.Range),
+			}
+		} else {
+			m[o.Name] = o
+		}
+	}
+	result := make(PluginDependencies, 0, len(m))
+	for _, v := range m {
+		result = append(result, v)
+	}
+	return result
+}
+
+// Resolve resolves dependencies between different plugins
+func (all PluginPackages) Resolve(selectedVersions PluginVersions, open PluginDependencies) (PluginVersions, error) {
+	if len(open) == 0 {
+		return selectedVersions, nil
+	}
+	currentRequirement, stillOpen := open[0], open[1:]
+	if currentRequirement != nil {
+		if selVersion := selectedVersions.find(currentRequirement.Name); selVersion != nil {
+			if currentRequirement.Range(selVersion.Version) {
+				return all.Resolve(selectedVersions, stillOpen)
+			}
+			return nil, fmt.Errorf("unable to find a matching version for \"%s\"", currentRequirement.Name)
+		}
+		availableVersions := all.GetAllVersions(currentRequirement.Name)
+		sort.Sort(availableVersions)
+
+		for _, version := range availableVersions {
+			if currentRequirement.Range(version.Version) {
+				resolved, err := all.Resolve(append(selectedVersions, version), stillOpen.Join(version.Require))
+
+				if err == nil {
+					return resolved, nil
+				}
+			}
+		}
+		return nil, fmt.Errorf("unable to find a matching version for \"%s\"", currentRequirement.Name)
+	}
+	return selectedVersions, nil
+}
+
+func (pv PluginVersions) install(out io.Writer) {
+	anyInstalled := false
+	currentlyInstalled := GetInstalledVersions(true)
+
+	for _, sel := range pv {
+		if sel.pack.Name != CorePluginName {
+			shouldInstall := true
+			if pv := currentlyInstalled.find(sel.pack.Name); pv != nil {
+				if pv.Version.NE(sel.Version) {
+					fmt.Fprintln(out, "Uninstalling", sel.pack.Name)
+					UninstallPlugin(out, sel.pack.Name)
+				} else {
+					shouldInstall = false
+				}
+			}
+
+			if shouldInstall {
+				if err := sel.DownloadAndInstall(out); err != nil {
+					fmt.Fprintln(out, err)
+					return
+				}
+				anyInstalled = true
+			}
+		}
+	}
+	if anyInstalled {
+		fmt.Fprintln(out, "One or more plugins installed.")
+	} else {
+		fmt.Fprintln(out, "Nothing to install / update")
+	}
+}
+
+// UninstallPlugin deletes the plugin folder of the given plugin
+func UninstallPlugin(out io.Writer, name string) {
+	for _, p := range Plugins {
+		if !p.IsLoaded() {
+			continue
+		}
+		if p.Name == name {
+			p.Loaded = false
+			if err := os.RemoveAll(filepath.Join(ConfigDir, "plug", p.DirName)); err != nil {
+				fmt.Fprintln(out, err)
+				return
+			}
+			break
+		}
+	}
+}
+
+// Install installs the plugin
+func (pl PluginPackage) Install(out io.Writer) {
+	selected, err := GetAllPluginPackages(out).Resolve(GetInstalledVersions(true), PluginDependencies{
+		&PluginDependency{
+			Name:  pl.Name,
+			Range: semver.Range(func(v semver.Version) bool { return true }),
+		}})
+	if err != nil {
+		fmt.Fprintln(out, err)
+		return
+	}
+	selected.install(out)
+}
+
+// UpdatePlugins updates the given plugins
+func UpdatePlugins(out io.Writer, plugins []string) {
+	// if no plugins are specified, update all installed plugins.
+	if len(plugins) == 0 {
+		for _, p := range Plugins {
+			if !p.IsLoaded() || p.Default {
+				continue
+			}
+			plugins = append(plugins, p.Name)
+		}
+	}
+
+	fmt.Fprintln(out, "Checking for plugin updates")
+	microVersion := PluginVersions{
+		newStaticPluginVersion(CorePluginName, util.Version),
+	}
+
+	var updates = make(PluginDependencies, 0)
+	for _, name := range plugins {
+		pv := GetInstalledPluginVersion(name)
+		r, err := semver.ParseRange(">=" + pv) // Try to get newer versions.
+		if err == nil {
+			updates = append(updates, &PluginDependency{
+				Name:  name,
+				Range: r,
+			})
+		}
+	}
+
+	selected, err := GetAllPluginPackages(out).Resolve(microVersion, updates)
+	if err != nil {
+		fmt.Fprintln(out, err)
+		return
+	}
+	selected.install(out)
+}
+
+func PluginCommand(out io.Writer, cmd string, args []string) {
+	switch cmd {
+	case "install":
+		installedVersions := GetInstalledVersions(false)
+		for _, plugin := range args {
+			pp := GetAllPluginPackages(out).Get(plugin)
+			if pp == nil {
+				fmt.Fprintln(out, "Unknown plugin \""+plugin+"\"")
+			} else if err := pp.IsInstallable(out); err != nil {
+				fmt.Fprintln(out, "Error installing ", plugin, ": ", err)
+			} else {
+				for _, installed := range installedVersions {
+					if pp.Name == installed.Pack().Name {
+						if pp.Versions[0].Version.Compare(installed.Version) == 1 {
+							fmt.Fprintln(out, pp.Name, " is already installed but out-of-date: use 'plugin update ", pp.Name, "' to update")
+						} else {
+							fmt.Fprintln(out, pp.Name, " is already installed")
+						}
+					}
+				}
+				pp.Install(out)
+			}
+		}
+
+	case "remove":
+		removed := ""
+		for _, plugin := range args {
+			// check if the plugin exists.
+			for _, p := range Plugins {
+				if p.Name == plugin && p.Default {
+					fmt.Fprintln(out, "Default plugins cannot be removed, but can be disabled via settings.")
+					continue
+				}
+				if p.Name == plugin {
+					UninstallPlugin(out, plugin)
+					removed += plugin + " "
+					continue
+				}
+			}
+		}
+		if removed != "" {
+			fmt.Fprintln(out, "Removed ", removed)
+		} else {
+			fmt.Fprintln(out, "No plugins removed")
+		}
+	case "update":
+		UpdatePlugins(out, args)
+	case "list":
+		plugins := GetInstalledVersions(false)
+		fmt.Fprintln(out, "The following plugins are currently installed:")
+		for _, p := range plugins {
+			fmt.Fprintf(out, "%s (%s)\n", p.Pack().Name, p.Version)
+		}
+	case "search":
+		plugins := SearchPlugin(out, args)
+		fmt.Fprintln(out, len(plugins), " plugins found")
+		for _, p := range plugins {
+			fmt.Fprintln(out, "----------------")
+			fmt.Fprintln(out, p.String())
+		}
+		fmt.Fprintln(out, "----------------")
+	case "available":
+		packages := GetAllPluginPackages(out)
+		fmt.Fprintln(out, "Available Plugins:")
+		for _, pkg := range packages {
+			fmt.Fprintln(out, pkg.Name)
+		}
+	default:
+		fmt.Fprintln(out, "Invalid plugin command")
+	}
+}

internal/config/plugin_installer_test.go

@@ -0,0 +1,56 @@
+package config
+
+import (
+	"testing"
+
+	"github.com/blang/semver"
+
+	"github.com/zyedidia/json5"
+)
+
+func TestDependencyResolving(t *testing.T) {
+	js := `
+[{
+  "Name": "Foo",
+  "Versions": [{ "Version": "1.0.0" }, { "Version": "1.5.0" },{ "Version": "2.0.0" }]
+}, {
+  "Name": "Bar",
+  "Versions": [{ "Version": "1.0.0", "Require": {"Foo": ">1.0.0 <2.0.0"} }]
+}, {
+  "Name": "Unresolvable",
+  "Versions": [{ "Version": "1.0.0", "Require": {"Foo": "<=1.0.0", "Bar": ">0.0.0"} }]
+	}]
+`
+	var all PluginPackages
+	err := json5.Unmarshal([]byte(js), &all)
+	if err != nil {
+		t.Error(err)
+	}
+	selected, err := all.Resolve(PluginVersions{}, PluginDependencies{
+		&PluginDependency{"Bar", semver.MustParseRange(">=1.0.0")},
+	})
+
+	check := func(name, version string) {
+		v := selected.find(name)
+		expected := semver.MustParse(version)
+		if v == nil {
+			t.Errorf("Failed to resolve %s", name)
+		} else if expected.NE(v.Version) {
+			t.Errorf("%s resolved in wrong version %v", name, v)
+		}
+	}
+
+	if err != nil {
+		t.Error(err)
+	} else {
+		check("Foo", "1.5.0")
+		check("Bar", "1.0.0")
+	}
+
+	selected, err = all.Resolve(PluginVersions{}, PluginDependencies{
+		&PluginDependency{"Unresolvable", semver.MustParseRange(">0.0.0")},
+	})
+	if err == nil {
+		t.Error("Unresolvable package resolved:", selected)
+	}
+}

internal/config/plugin_manager.go

@@ -7,12 +7,9 @@ import (
 )
 
 var (
-	ErrMissingName    = errors.New("Missing or empty name field")
-	ErrMissingDesc    = errors.New("Missing or empty description field")
-	ErrMissingSite    = errors.New("Missing or empty website field")
-	ErrMissingInstall = errors.New("Missing or empty install field")
-	ErrMissingVstr    = errors.New("Missing or empty versions field")
-	ErrMissingRequire = errors.New("Missing or empty require field")
+	ErrMissingName = errors.New("Missing or empty name field")
+	ErrMissingDesc = errors.New("Missing or empty description field")
+	ErrMissingSite = errors.New("Missing or empty website field")
 )
 
 // PluginInfo contains all the needed info about a plugin
@@ -27,19 +24,16 @@ var (
 // Vstr: version
 // Require: list of dependencies and requirements
 type PluginInfo struct {
-	Name    string   `json:"name"`
-	Desc    string   `json:"description"`
-	Site    string   `json:"website"`
-	Install string   `json:"install"`
-	Vstr    string   `json:"version"`
-	Require []string `json:"require"`
+	Name string `json:"Name"`
+	Desc string `json:"Description"`
+	Site string `json:"Website"`
 }
 
 // NewPluginInfo parses a JSON input into a valid PluginInfo struct
 // Returns an error if there are any missing fields or any invalid fields
 // There are no optional fields in a plugin info json file
 func NewPluginInfo(data []byte) (*PluginInfo, error) {
-	var info PluginInfo
+	var info []PluginInfo
 
 	dec := json.NewDecoder(bytes.NewReader(data))
 	// dec.DisallowUnknownFields() // Force errors
@@ -48,19 +42,5 @@ func NewPluginInfo(data []byte) (*PluginInfo, error) {
 		return nil, err
 	}
 
-	// if len(info.Name) == 0 {
-	// 	return nil, ErrMissingName
-	// } else if len(info.Desc) == 0 {
-	// 	return nil, ErrMissingDesc
-	// } else if len(info.Site) == 0 {
-	// 	return nil, ErrMissingSite
-	// } else if len(info.Install) == 0 {
-	// 	return nil, ErrMissingInstall
-	// } else if len(info.Vstr) == 0 {
-	// 	return nil, ErrMissingVstr
-	// } else if len(info.Require) == 0 {
-	// 	return nil, ErrMissingRequire
-	// }
-
-	return &info, nil
+	return &info[0], nil
 }

internal/config/rtfiles.go

@@ -9,6 +9,8 @@ import (
 	"path/filepath"
 	"regexp"
 	"strings"
+
+	rt "github.com/zyedidia/micro/v2/runtime"
 )
 
 const (
@@ -17,10 +19,13 @@ const (
 	RTHelp         = 2
 	RTPlugin       = 3
 	RTSyntaxHeader = 4
-	NumTypes       = 5 // How many filetypes are there
 )
 
-type RTFiletype byte
+var (
+	NumTypes = 5 // How many filetypes are there
+)
+
+type RTFiletype int
 
 // RuntimeFile allows the program to read runtime data like colorschemes or syntax files
 type RuntimeFile interface {
@@ -31,8 +36,21 @@ type RuntimeFile interface {
 }
 
 // allFiles contains all available files, mapped by filetype
-var allFiles [NumTypes][]RuntimeFile
-var realFiles [NumTypes][]RuntimeFile
+var allFiles [][]RuntimeFile
+var realFiles [][]RuntimeFile
+
+func init() {
+	allFiles = make([][]RuntimeFile, NumTypes)
+	realFiles = make([][]RuntimeFile, NumTypes)
+}
+
+// NewRTFiletype creates a new RTFiletype
+func NewRTFiletype() int {
+	NumTypes++
+	allFiles = append(allFiles, []RuntimeFile{})
+	realFiles = append(realFiles, []RuntimeFile{})
+	return NumTypes - 1
+}
 
 // some file on filesystem
 type realFile string
@@ -74,7 +92,7 @@ func (af assetFile) Name() string {
 }
 
 func (af assetFile) Data() ([]byte, error) {
-	return Asset(string(af))
+	return rt.Asset(string(af))
 }
 
 func (nf namedFile) Name() string {
@@ -107,7 +125,7 @@ func AddRuntimeFilesFromDirectory(fileType RTFiletype, directory, pattern string
 // AddRuntimeFilesFromAssets registers each file from the given asset-directory for
 // the filetype which matches the file-pattern
 func AddRuntimeFilesFromAssets(fileType RTFiletype, directory, pattern string) {
-	files, err := AssetDir(directory)
+	files, err := rt.AssetDir(directory)
 	if err != nil {
 		return
 	}
@@ -168,26 +186,30 @@ func InitRuntimeFiles() {
 	isID := regexp.MustCompile(`^[_A-Za-z0-9]+$`).MatchString
 
 	for _, d := range files {
-		if d.IsDir() {
-			srcs, _ := ioutil.ReadDir(filepath.Join(plugdir, d.Name()))
+		plugpath := filepath.Join(plugdir, d.Name())
+		if stat, err := os.Stat(plugpath); err == nil && stat.IsDir() {
+			srcs, _ := ioutil.ReadDir(plugpath)
 			p := new(Plugin)
 			p.Name = d.Name()
 			p.DirName = d.Name()
 			for _, f := range srcs {
 				if strings.HasSuffix(f.Name(), ".lua") {
 					p.Srcs = append(p.Srcs, realFile(filepath.Join(plugdir, d.Name(), f.Name())))
-				} else if f.Name() == "info.json" {
-					data, err := ioutil.ReadFile(filepath.Join(plugdir, d.Name(), "info.json"))
+				} else if strings.HasSuffix(f.Name(), ".json") {
+					data, err := ioutil.ReadFile(filepath.Join(plugdir, d.Name(), f.Name()))
+					if err != nil {
+						continue
+					}
+					p.Info, err = NewPluginInfo(data)
 					if err != nil {
 						continue
 					}
-					p.Info, _ = NewPluginInfo(data)
 					p.Name = p.Info.Name
 				}
 			}
 
-			if !isID(p.Name) {
-				log.Println("Invalid plugin name", p.Name)
+			if !isID(p.Name) || len(p.Srcs) <= 0 {
+				log.Println(p.Name, "is not a plugin")
 				continue
 			}
 			Plugins = append(Plugins, p)
@@ -195,9 +217,9 @@ func InitRuntimeFiles() {
 	}
 
 	plugdir = filepath.Join("runtime", "plugins")
-	if files, err := AssetDir(plugdir); err == nil {
+	if files, err := rt.AssetDir(plugdir); err == nil {
 		for _, d := range files {
-			if srcs, err := AssetDir(filepath.Join(plugdir, d)); err == nil {
+			if srcs, err := rt.AssetDir(filepath.Join(plugdir, d)); err == nil {
 				p := new(Plugin)
 				p.Name = d
 				p.DirName = d
@@ -205,17 +227,20 @@ func InitRuntimeFiles() {
 				for _, f := range srcs {
 					if strings.HasSuffix(f, ".lua") {
 						p.Srcs = append(p.Srcs, assetFile(filepath.Join(plugdir, d, f)))
-					} else if f == "info.json" {
-						data, err := Asset(filepath.Join(plugdir, d, "info.json"))
+					} else if strings.HasSuffix(f, ".json") {
+						data, err := rt.Asset(filepath.Join(plugdir, d, f))
+						if err != nil {
+							continue
+						}
+						p.Info, err = NewPluginInfo(data)
 						if err != nil {
 							continue
 						}
-						p.Info, _ = NewPluginInfo(data)
 						p.Name = p.Info.Name
 					}
 				}
-				if !isID(p.Name) {
-					log.Println("Invalid plugin name", p.Name)
+				if !isID(p.Name) || len(p.Srcs) <= 0 {
+					log.Println(p.Name, "is not a plugin")
 					continue
 				}
 				Plugins = append(Plugins, p)
@@ -253,7 +278,7 @@ func PluginAddRuntimeFile(plugin string, filetype RTFiletype, filePath string) e
 	pldir := pl.DirName
 	fullpath := filepath.Join(ConfigDir, "plug", pldir, filePath)
 	if _, err := os.Stat(fullpath); err == nil {
-		AddRuntimeFile(filetype, realFile(fullpath))
+		AddRealRuntimeFile(filetype, realFile(fullpath))
 	} else {
 		fullpath = path.Join("runtime", "plugins", pldir, filePath)
 		AddRuntimeFile(filetype, assetFile(fullpath))
@@ -280,5 +305,5 @@ func PluginAddRuntimeFilesFromDirectory(plugin string, filetype RTFiletype, dire
 
 // PluginAddRuntimeFileFromMemory adds a file to the runtime files for a plugin from a given string
 func PluginAddRuntimeFileFromMemory(filetype RTFiletype, filename, data string) {
-	AddRuntimeFile(filetype, memoryFile{filename, []byte(data)})
+	AddRealRuntimeFile(filetype, memoryFile{filename, []byte(data)})
 }

internal/config/settings.go

@@ -3,15 +3,17 @@ package config
 import (
 	"encoding/json"
 	"errors"
+	"fmt"
 	"io/ioutil"
 	"os"
+	"path/filepath"
 	"reflect"
 	"strconv"
 	"strings"
 
-	"github.com/flynn/json5"
 	"github.com/zyedidia/glob"
-	"github.com/zyedidia/micro/internal/util"
+	"github.com/zyedidia/json5"
+	"github.com/zyedidia/micro/v2/internal/util"
 	"golang.org/x/text/encoding/htmlindex"
 )
 
@@ -25,16 +27,23 @@ var (
 	GlobalSettings map[string]interface{}
 
 	// This is the raw parsed json
-	parsedSettings map[string]interface{}
+	parsedSettings     map[string]interface{}
+	settingsParseError bool
+
+	// ModifiedSettings is a map of settings which should be written to disk
+	// because they have been modified by the user in this session
+	ModifiedSettings map[string]bool
 )
 
 func init() {
+	ModifiedSettings = make(map[string]bool)
 	parsedSettings = make(map[string]interface{})
 }
 
 // Options with validators
 var optionValidators = map[string]optionValidator{
-	// "autosave":     validateNonNegativeValue,
+	"autosave":     validateNonNegativeValue,
+	"clipboard":    validateClipboard,
 	"tabsize":      validatePositiveValue,
 	"scrollmargin": validateNonNegativeValue,
 	"scrollspeed":  validateNonNegativeValue,
@@ -42,36 +51,68 @@ var optionValidators = map[string]optionValidator{
 	"colorcolumn":  validateNonNegativeValue,
 	"fileformat":   validateLineEnding,
 	"encoding":     validateEncoding,
+	"multiopen":    validateMultiOpen,
 }
 
 func ReadSettings() error {
-	filename := ConfigDir + "/settings.json"
+	filename := filepath.Join(ConfigDir, "settings.json")
 	if _, e := os.Stat(filename); e == nil {
 		input, err := ioutil.ReadFile(filename)
 		if err != nil {
+			settingsParseError = true
 			return errors.New("Error reading settings.json file: " + err.Error())
 		}
 		if !strings.HasPrefix(string(input), "null") {
 			// Unmarshal the input into the parsed map
 			err = json5.Unmarshal(input, &parsedSettings)
 			if err != nil {
+				settingsParseError = true
 				return errors.New("Error reading settings.json: " + err.Error())
 			}
+
+			// check if autosave is a boolean and convert it to float if so
+			if v, ok := parsedSettings["autosave"]; ok {
+				s, ok := v.(bool)
+				if ok {
+					if s {
+						parsedSettings["autosave"] = 8.0
+					} else {
+						parsedSettings["autosave"] = 0.0
+					}
+				}
+			}
 		}
 	}
 	return nil
 }
 
+func verifySetting(option string, value reflect.Type, def reflect.Type) bool {
+	var interfaceArr []interface{}
+	switch option {
+	case "pluginrepos", "pluginchannels":
+		return value.AssignableTo(reflect.TypeOf(interfaceArr))
+	default:
+		return def.AssignableTo(value)
+	}
+}
+
 // InitGlobalSettings initializes the options map and sets all options to their default values
 // Must be called after ReadSettings
-func InitGlobalSettings() {
+func InitGlobalSettings() error {
+	var err error
 	GlobalSettings = DefaultGlobalSettings()
 
 	for k, v := range parsedSettings {
 		if !strings.HasPrefix(reflect.TypeOf(v).String(), "map") {
+			if _, ok := GlobalSettings[k]; ok && !verifySetting(k, reflect.TypeOf(v), reflect.TypeOf(GlobalSettings[k])) {
+				err = fmt.Errorf("Global Error: setting '%s' has incorrect type (%s), using default value: %v (%s)", k, reflect.TypeOf(v), GlobalSettings[k], reflect.TypeOf(GlobalSettings[k]))
+				continue
+			}
+
 			GlobalSettings[k] = v
 		}
 	}
+	return err
 }
 
 // InitLocalSettings scans the json in settings.json and sets the options locally based
@@ -84,6 +125,10 @@ func InitLocalSettings(settings map[string]interface{}, path string) error {
 			if strings.HasPrefix(k, "ft:") {
 				if settings["filetype"].(string) == k[3:] {
 					for k1, v1 := range v.(map[string]interface{}) {
+						if _, ok := settings[k1]; ok && !verifySetting(k1, reflect.TypeOf(v1), reflect.TypeOf(settings[k1])) {
+							parseError = fmt.Errorf("Error: setting '%s' has incorrect type (%s), using default value: %v (%s)", k, reflect.TypeOf(v1), settings[k1], reflect.TypeOf(settings[k1]))
+							continue
+						}
 						settings[k1] = v1
 					}
 				}
@@ -96,6 +141,10 @@ func InitLocalSettings(settings map[string]interface{}, path string) error {
 
 				if g.MatchString(path) {
 					for k1, v1 := range v.(map[string]interface{}) {
+						if _, ok := settings[k1]; ok && !verifySetting(k1, reflect.TypeOf(v1), reflect.TypeOf(settings[k1])) {
+							parseError = fmt.Errorf("Error: setting '%s' has incorrect type (%s), using default value: %v (%s)", k, reflect.TypeOf(v1), settings[k1], reflect.TypeOf(settings[k1]))
+							continue
+						}
 						settings[k1] = v1
 					}
 				}
@@ -107,10 +156,35 @@ func InitLocalSettings(settings map[string]interface{}, path string) error {
 
 // WriteSettings writes the settings to the specified filename as JSON
 func WriteSettings(filename string) error {
+	if settingsParseError {
+		// Don't write settings if there was a parse error
+		// because this will delete the settings.json if it
+		// is invalid. Instead we should allow the user to fix
+		// it manually.
+		return nil
+	}
+
 	var err error
 	if _, e := os.Stat(ConfigDir); e == nil {
+		defaults := DefaultGlobalSettings()
+
+		// remove any options froms parsedSettings that have since been marked as default
+		for k, v := range parsedSettings {
+			if !strings.HasPrefix(reflect.TypeOf(v).String(), "map") {
+				cur, okcur := GlobalSettings[k]
+				if def, ok := defaults[k]; ok && okcur && reflect.DeepEqual(cur, def) {
+					delete(parsedSettings, k)
+				}
+			}
+		}
+
+		// add any options to parsedSettings that have since been marked as non-default
 		for k, v := range GlobalSettings {
-			parsedSettings[k] = v
+			if def, ok := defaults[k]; !ok || !reflect.DeepEqual(v, def) {
+				if _, wr := ModifiedSettings[k]; wr {
+					parsedSettings[k] = v
+				}
+			}
 		}
 
 		txt, _ := json.MarshalIndent(parsedSettings, "", "    ")
@@ -119,12 +193,55 @@ func WriteSettings(filename string) error {
 	return err
 }
 
-// RegisterCommonOption creates a new option. This is meant to be called by plugins to add options.
+// OverwriteSettings writes the current settings to settings.json and
+// resets any user configuration of local settings present in settings.json
+func OverwriteSettings(filename string) error {
+	settings := make(map[string]interface{})
+
+	var err error
+	if _, e := os.Stat(ConfigDir); e == nil {
+		defaults := DefaultGlobalSettings()
+		for k, v := range GlobalSettings {
+			if def, ok := defaults[k]; !ok || !reflect.DeepEqual(v, def) {
+				if _, wr := ModifiedSettings[k]; wr {
+					settings[k] = v
+				}
+			}
+		}
+
+		txt, _ := json.MarshalIndent(settings, "", "    ")
+		err = ioutil.WriteFile(filename, append(txt, '\n'), 0644)
+	}
+	return err
+}
+
+// RegisterCommonOptionPlug creates a new option (called pl.name). This is meant to be called by plugins to add options.
+func RegisterCommonOptionPlug(pl string, name string, defaultvalue interface{}) error {
+	name = pl + "." + name
+	if _, ok := GlobalSettings[name]; !ok {
+		defaultCommonSettings[name] = defaultvalue
+		GlobalSettings[name] = defaultvalue
+		err := WriteSettings(filepath.Join(ConfigDir, "settings.json"))
+		if err != nil {
+			return errors.New("Error writing settings.json file: " + err.Error())
+		}
+	} else {
+		defaultCommonSettings[name] = defaultvalue
+	}
+	return nil
+}
+
+// RegisterGlobalOptionPlug creates a new global-only option (named pl.name)
+func RegisterGlobalOptionPlug(pl string, name string, defaultvalue interface{}) error {
+	return RegisterGlobalOption(pl+"."+name, defaultvalue)
+}
+
+// RegisterCommonOption creates a new option
 func RegisterCommonOption(name string, defaultvalue interface{}) error {
 	if v, ok := GlobalSettings[name]; !ok {
 		defaultCommonSettings[name] = defaultvalue
 		GlobalSettings[name] = defaultvalue
-		err := WriteSettings(ConfigDir + "/settings.json")
+		err := WriteSettings(filepath.Join(ConfigDir, "settings.json"))
 		if err != nil {
 			return errors.New("Error writing settings.json file: " + err.Error())
 		}
@@ -134,16 +251,17 @@ func RegisterCommonOption(name string, defaultvalue interface{}) error {
 	return nil
 }
 
+// RegisterGlobalOption creates a new global-only option
 func RegisterGlobalOption(name string, defaultvalue interface{}) error {
 	if v, ok := GlobalSettings[name]; !ok {
-		defaultGlobalSettings[name] = defaultvalue
+		DefaultGlobalOnlySettings[name] = defaultvalue
 		GlobalSettings[name] = defaultvalue
-		err := WriteSettings(ConfigDir + "/settings.json")
+		err := WriteSettings(filepath.Join(ConfigDir, "settings.json"))
 		if err != nil {
 			return errors.New("Error writing settings.json file: " + err.Error())
 		}
 	} else {
-		defaultGlobalSettings[name] = v
+		DefaultGlobalOnlySettings[name] = v
 	}
 	return nil
 }
@@ -155,23 +273,30 @@ func GetGlobalOption(name string) interface{} {
 
 var defaultCommonSettings = map[string]interface{}{
 	"autoindent":     true,
+	"autosu":         false,
 	"backup":         true,
+	"backupdir":      "",
 	"basename":       false,
 	"colorcolumn":    float64(0),
 	"cursorline":     true,
+	"diffgutter":     false,
 	"encoding":       "utf-8",
-	"eofnewline":     false,
-	"fastdirty":      true,
+	"eofnewline":     true,
+	"fastdirty":      false,
 	"fileformat":     "unix",
 	"filetype":       "unknown",
-	"ignorecase":     false,
+	"hlsearch":       false,
+	"incsearch":      true,
+	"ignorecase":     true,
 	"indentchar":     " ",
 	"keepautoindent": false,
 	"matchbrace":     true,
 	"mkparents":      false,
+	"permbackup":     false,
 	"readonly":       false,
 	"rmtrailingws":   false,
 	"ruler":          true,
+	"relativeruler":  false,
 	"savecursor":     false,
 	"saveundo":       false,
 	"scrollbar":      false,
@@ -181,7 +306,7 @@ var defaultCommonSettings = map[string]interface{}{
 	"softwrap":       false,
 	"splitbottom":    true,
 	"splitright":     true,
-	"statusformatl":  "$(filename) $(modified)($(line),$(col)) | ft:$(opt:filetype) | $(opt:fileformat) | $(opt:encoding)",
+	"statusformatl":  "$(filename) $(modified)($(line),$(col)) $(status.paste)| ft:$(opt:filetype) | $(opt:fileformat) | $(opt:encoding)",
 	"statusformatr":  "$(bind:ToggleKeyMenu): bindings, $(bind:ToggleHelp): help",
 	"statusline":     true,
 	"syntax":         true,
@@ -189,6 +314,7 @@ var defaultCommonSettings = map[string]interface{}{
 	"tabsize":        float64(4),
 	"tabstospaces":   false,
 	"useprimary":     true,
+	"wordwrap":       false,
 }
 
 func GetInfoBarOffset() int {
@@ -212,15 +338,35 @@ func DefaultCommonSettings() map[string]interface{} {
 	return commonsettings
 }
 
-var defaultGlobalSettings = map[string]interface{}{
-	// "autosave":    float64(0),
-	"colorscheme": "default",
-	"infobar":     true,
-	"keymenu":     false,
-	"mouse":       true,
-	"savehistory": true,
-	"sucmd":       "sudo",
-	"termtitle":   false,
+// a list of settings that should only be globally modified and their
+// default values
+var DefaultGlobalOnlySettings = map[string]interface{}{
+	"autosave":       float64(0),
+	"clipboard":      "external",
+	"colorscheme":    "default",
+	"divchars":       "|-",
+	"divreverse":     true,
+	"fakecursor":     false,
+	"infobar":        true,
+	"keymenu":        false,
+	"mouse":          true,
+	"multiopen":      "tab",
+	"parsecursor":    false,
+	"paste":          false,
+	"pluginchannels": []string{"https://raw.githubusercontent.com/micro-editor/plugin-channel/master/channel.json"},
+	"pluginrepos":    []string{},
+	"savehistory":    true,
+	"scrollbarchar":  "|",
+	"sucmd":          "sudo",
+	"tabhighlight":   false,
+	"tabreverse":     true,
+	"xterm":          false,
+}
+
+// a list of settings that should never be globally modified
+var LocalSettings = []string{
+	"filetype",
+	"readonly",
 }
 
 // DefaultGlobalSettings returns the default global settings for micro
@@ -230,7 +376,7 @@ func DefaultGlobalSettings() map[string]interface{} {
 	for k, v := range defaultCommonSettings {
 		globalsettings[k] = v
 	}
-	for k, v := range defaultGlobalSettings {
+	for k, v := range DefaultGlobalOnlySettings {
 		globalsettings[k] = v
 	}
 	return globalsettings
@@ -243,12 +389,13 @@ func DefaultAllSettings() map[string]interface{} {
 	for k, v := range defaultCommonSettings {
 		allsettings[k] = v
 	}
-	for k, v := range defaultGlobalSettings {
+	for k, v := range DefaultGlobalOnlySettings {
 		allsettings[k] = v
 	}
 	return allsettings
 }
 
+// GetNativeValue parses and validates a value for a given option
 func GetNativeValue(option string, realValue interface{}, value string) (interface{}, error) {
 	var native interface{}
 	kind := reflect.TypeOf(realValue).Kind()
@@ -329,6 +476,22 @@ func validateColorscheme(option string, value interface{}) error {
 	return nil
 }
 
+func validateClipboard(option string, value interface{}) error {
+	val, ok := value.(string)
+
+	if !ok {
+		return errors.New("Expected string type for clipboard")
+	}
+
+	switch val {
+	case "internal", "external", "terminal":
+	default:
+		return errors.New(option + " must be 'internal', 'external', or 'terminal'")
+	}
+
+	return nil
+}
+
 func validateLineEnding(option string, value interface{}) error {
 	endingType, ok := value.(string)
 
@@ -347,3 +510,19 @@ func validateEncoding(option string, value interface{}) error {
 	_, err := htmlindex.Get(value.(string))
 	return err
 }
+
+func validateMultiOpen(option string, value interface{}) error {
+	val, ok := value.(string)
+
+	if !ok {
+		return errors.New("Expected string type for multiopen")
+	}
+
+	switch val {
+	case "tab", "hsplit", "vsplit":
+	default:
+		return errors.New(option + " must be 'tab', 'hsplit', or 'vsplit'")
+	}
+
+	return nil
+}

internal/display/infowindow.go

@@ -1,20 +1,20 @@
 package display
 
 import (
-	"unicode/utf8"
-
 	runewidth "github.com/mattn/go-runewidth"
-	"github.com/zyedidia/micro/internal/buffer"
-	"github.com/zyedidia/micro/internal/config"
-	"github.com/zyedidia/micro/internal/info"
-	"github.com/zyedidia/micro/internal/screen"
-	"github.com/zyedidia/micro/internal/util"
-	"github.com/zyedidia/tcell"
+	"github.com/zyedidia/micro/v2/internal/buffer"
+	"github.com/zyedidia/micro/v2/internal/config"
+	"github.com/zyedidia/micro/v2/internal/info"
+	"github.com/zyedidia/micro/v2/internal/screen"
+	"github.com/zyedidia/micro/v2/internal/util"
+	"github.com/zyedidia/tcell/v2"
 )
 
 type InfoWindow struct {
 	*info.InfoBuf
 	*View
+
+	hscroll int
 }
 
 func (i *InfoWindow) errStyle() tcell.Style {
@@ -68,13 +68,30 @@ func (i *InfoWindow) IsActive() bool   { return true }
 func (i *InfoWindow) LocFromVisual(vloc buffer.Loc) buffer.Loc {
 	c := i.Buffer.GetActiveCursor()
 	l := i.Buffer.LineBytes(0)
-	n := utf8.RuneCountInString(i.Msg)
+	n := util.CharacterCountInString(i.Msg)
 	return buffer.Loc{c.GetCharPosInLine(l, vloc.X-n), 0}
 }
 
+func (i *InfoWindow) BufView() View {
+	return View{
+		X:         0,
+		Y:         i.Y,
+		Width:     i.Width,
+		Height:    1,
+		StartLine: SLoc{0, 0},
+		StartCol:  0,
+	}
+}
+
+func (i *InfoWindow) Scroll(s SLoc, n int) SLoc        { return s }
+func (i *InfoWindow) Diff(s1, s2 SLoc) int             { return 0 }
+func (i *InfoWindow) SLocFromLoc(loc buffer.Loc) SLoc  { return SLoc{0, 0} }
+func (i *InfoWindow) VLocFromLoc(loc buffer.Loc) VLoc  { return VLoc{SLoc{0, 0}, loc.X} }
+func (i *InfoWindow) LocFromVLoc(vloc VLoc) buffer.Loc { return buffer.Loc{vloc.VisualX, 0} }
+
 func (i *InfoWindow) Clear() {
 	for x := 0; x < i.Width; x++ {
-		screen.Screen.SetContent(x, i.Y, ' ', nil, i.defStyle())
+		screen.SetContent(x, i.Y, ' ', nil, i.defStyle())
 	}
 }
 
@@ -84,13 +101,13 @@ func (i *InfoWindow) displayBuffer() {
 	activeC := b.GetActiveCursor()
 
 	blocX := 0
-	vlocX := utf8.RuneCountInString(i.Msg)
+	vlocX := util.CharacterCountInString(i.Msg)
 
 	tabsize := 4
 	line, nColsBeforeStart, bslice := util.SliceVisualEnd(line, blocX, tabsize)
 	blocX = bslice
 
-	draw := func(r rune, style tcell.Style) {
+	draw := func(r rune, combc []rune, style tcell.Style) {
 		if nColsBeforeStart <= 0 {
 			bloc := buffer.Loc{X: blocX, Y: 0}
 			if activeC.HasSelection() &&
@@ -110,8 +127,9 @@ func (i *InfoWindow) displayBuffer() {
 				c := r
 				if j > 0 {
 					c = ' '
+					combc = nil
 				}
-				screen.Screen.SetContent(vlocX, i.Y, c, nil, style)
+				screen.SetContent(vlocX, i.Y, c, combc, style)
 			}
 			vlocX++
 		}
@@ -120,13 +138,11 @@ func (i *InfoWindow) displayBuffer() {
 
 	totalwidth := blocX - nColsBeforeStart
 	for len(line) > 0 {
-		if activeC.X == blocX {
-			screen.Screen.ShowCursor(vlocX, i.Y)
-		}
+		curVX := vlocX
+		curBX := blocX
+		r, combc, size := util.DecodeCharacter(line)
 
-		r, size := utf8.DecodeRune(line)
-
-		draw(r, i.defStyle())
+		draw(r, combc, i.defStyle())
 
 		width := 0
 
@@ -146,16 +162,19 @@ func (i *InfoWindow) displayBuffer() {
 		// Draw any extra characters either spaces for tabs or @ for incomplete wide runes
 		if width > 1 {
 			for j := 1; j < width; j++ {
-				draw(char, i.defStyle())
+				draw(char, nil, i.defStyle())
 			}
 		}
+		if activeC.X == curBX {
+			screen.ShowCursor(curVX, i.Y)
+		}
 		totalwidth += width
 		if vlocX >= i.Width {
 			break
 		}
 	}
 	if activeC.X == blocX {
-		screen.Screen.ShowCursor(vlocX, i.Y)
+		screen.ShowCursor(vlocX, i.Y)
 	}
 }
 
@@ -167,21 +186,52 @@ func (i *InfoWindow) displayKeyMenu() {
 	for y := 0; y < len(keydisplay); y++ {
 		for x := 0; x < i.Width; x++ {
 			if x < len(keydisplay[y]) {
-				screen.Screen.SetContent(x, i.Y-len(keydisplay)+y, rune(keydisplay[y][x]), nil, i.defStyle())
+				screen.SetContent(x, i.Y-len(keydisplay)+y, rune(keydisplay[y][x]), nil, i.defStyle())
 			} else {
-				screen.Screen.SetContent(x, i.Y-len(keydisplay)+y, ' ', nil, i.defStyle())
+				screen.SetContent(x, i.Y-len(keydisplay)+y, ' ', nil, i.defStyle())
 			}
 		}
 	}
 }
 
-func (i *InfoWindow) Display() {
+func (i *InfoWindow) totalSize() int {
+	sum := 0
+	for _, n := range i.Suggestions {
+		sum += runewidth.StringWidth(n) + 1
+	}
+	return sum
+}
+
+func (i *InfoWindow) scrollToSuggestion() {
 	x := 0
-	if config.GetGlobalOption("keymenu").(bool) {
-		i.displayKeyMenu()
+	s := i.totalSize()
+
+	for j, n := range i.Suggestions {
+		c := util.CharacterCountInString(n)
+		if j == i.CurSuggestion {
+			if x+c >= i.hscroll+i.Width {
+				i.hscroll = util.Clamp(x+c+1-i.Width, 0, s-i.Width)
+			} else if x < i.hscroll {
+				i.hscroll = util.Clamp(x-1, 0, s-i.Width)
+			}
+			break
+		}
+		x += c + 1
 	}
 
+	if s-i.Width <= 0 {
+		i.hscroll = 0
+	}
+}
+
+func (i *InfoWindow) Display() {
 	if i.HasPrompt || config.GlobalSettings["infobar"].(bool) {
+		i.Clear()
+		x := 0
+		if config.GetGlobalOption("keymenu").(bool) {
+			i.displayKeyMenu()
+		}
+
 		if !i.HasPrompt && !i.HasMessage && !i.HasError {
 			return
 		}
@@ -194,7 +244,7 @@ func (i *InfoWindow) Display() {
 
 		display := i.Msg
 		for _, c := range display {
-			screen.Screen.SetContent(x, i.Y, c, nil, style)
+			screen.SetContent(x, i.Y, c, nil, style)
 			x += runewidth.RuneWidth(c)
 		}
 
@@ -204,37 +254,58 @@ func (i *InfoWindow) Display() {
 	}
 
 	if i.HasSuggestions && len(i.Suggestions) > 1 {
+		i.scrollToSuggestion()
+
+		x := -i.hscroll
+		done := false
+
 		statusLineStyle := config.DefStyle.Reverse(true)
-		if style, ok := config.Colorscheme["statusline"]; ok {
+		if style, ok := config.Colorscheme["statusline.suggestions"]; ok {
+			statusLineStyle = style
+		} else if style, ok := config.Colorscheme["statusline"]; ok {
 			statusLineStyle = style
 		}
 		keymenuOffset := 0
 		if config.GetGlobalOption("keymenu").(bool) {
 			keymenuOffset = len(keydisplay)
 		}
-		x := 0
+
+		draw := func(r rune, s tcell.Style) {
+			y := i.Y - keymenuOffset - 1
+			rw := runewidth.RuneWidth(r)
+			for j := 0; j < rw; j++ {
+				c := r
+				if j > 0 {
+					c = ' '
+				}
+
+				if x == i.Width-1 && !done {
+					screen.SetContent(i.Width-1, y, '>', nil, s)
+					x++
+					break
+				} else if x == 0 && i.hscroll > 0 {
+					screen.SetContent(0, y, '<', nil, s)
+				} else if x >= 0 && x < i.Width {
+					screen.SetContent(x, y, c, nil, s)
+				}
+				x++
+			}
+		}
+
 		for j, s := range i.Suggestions {
 			style := statusLineStyle
 			if i.CurSuggestion == j {
 				style = style.Reverse(true)
 			}
 			for _, r := range s {
-				screen.Screen.SetContent(x, i.Y-keymenuOffset-1, r, nil, style)
-				x++
-				if x >= i.Width {
-					return
-				}
-			}
-			screen.Screen.SetContent(x, i.Y-keymenuOffset-1, ' ', nil, statusLineStyle)
-			x++
-			if x >= i.Width {
-				return
+				draw(r, style)
+				// screen.SetContent(x, i.Y-keymenuOffset-1, r, nil, style)
 			}
+			draw(' ', statusLineStyle)
 		}
 
 		for x < i.Width {
-			screen.Screen.SetContent(x, i.Y-keymenuOffset-1, ' ', nil, statusLineStyle)
-			x++
+			draw(' ', statusLineStyle)
 		}
 	}
 }

internal/display/softwrap.go

@@ -0,0 +1,348 @@
+package display
+
+import (
+	runewidth "github.com/mattn/go-runewidth"
+	"github.com/zyedidia/micro/v2/internal/buffer"
+	"github.com/zyedidia/micro/v2/internal/util"
+)
+
+// SLoc represents a vertical scrolling location, i.e. a location of a visual line
+// in the buffer. When softwrap is enabled, a buffer line may be displayed as
+// multiple visual lines (rows). So SLoc stores a number of a line in the buffer
+// and a number of a row within this line.
+type SLoc struct {
+	Line, Row int
+}
+
+// LessThan returns true if s is less b
+func (s SLoc) LessThan(b SLoc) bool {
+	if s.Line < b.Line {
+		return true
+	}
+	return s.Line == b.Line && s.Row < b.Row
+}
+
+// GreaterThan returns true if s is bigger than b
+func (s SLoc) GreaterThan(b SLoc) bool {
+	if s.Line > b.Line {
+		return true
+	}
+	return s.Line == b.Line && s.Row > b.Row
+}
+
+// LessEqual returns true if s is less than or equal to b
+func (s SLoc) LessEqual(b SLoc) bool {
+	if s.Line < b.Line {
+		return true
+	}
+	if s.Line == b.Line && s.Row < b.Row {
+		return true
+	}
+	return s == b
+}
+
+// GreaterEqual returns true if s is bigger than or equal to b
+func (s SLoc) GreaterEqual(b SLoc) bool {
+	if s.Line > b.Line {
+		return true
+	}
+	if s.Line == b.Line && s.Row > b.Row {
+		return true
+	}
+	return s == b
+}
+
+// VLoc represents a location in the buffer as a visual location in the
+// linewrapped buffer.
+type VLoc struct {
+	SLoc
+	VisualX int
+}
+
+type SoftWrap interface {
+	Scroll(s SLoc, n int) SLoc
+	Diff(s1, s2 SLoc) int
+	SLocFromLoc(loc buffer.Loc) SLoc
+	VLocFromLoc(loc buffer.Loc) VLoc
+	LocFromVLoc(vloc VLoc) buffer.Loc
+}
+
+func (w *BufWindow) getVLocFromLoc(loc buffer.Loc) VLoc {
+	vloc := VLoc{SLoc: SLoc{loc.Y, 0}, VisualX: 0}
+
+	if loc.X <= 0 {
+		return vloc
+	}
+
+	if w.bufWidth <= 0 {
+		return vloc
+	}
+
+	wordwrap := w.Buf.Settings["wordwrap"].(bool)
+	tabsize := util.IntOpt(w.Buf.Settings["tabsize"])
+
+	line := w.Buf.LineBytes(loc.Y)
+	x := 0
+	totalwidth := 0
+
+	wordwidth := 0
+	wordoffset := 0
+
+	for len(line) > 0 {
+		r, _, size := util.DecodeCharacter(line)
+		line = line[size:]
+
+		width := 0
+		switch r {
+		case '\t':
+			ts := tabsize - (totalwidth % tabsize)
+			width = util.Min(ts, w.bufWidth-vloc.VisualX)
+			totalwidth += ts
+		default:
+			width = runewidth.RuneWidth(r)
+			totalwidth += width
+		}
+
+		wordwidth += width
+
+		// Collect a complete word to know its width.
+		// If wordwrap is off, every single character is a complete "word".
+		if wordwrap {
+			if !util.IsWhitespace(r) && len(line) > 0 && wordwidth < w.bufWidth {
+				if x < loc.X {
+					wordoffset += width
+					x++
+				}
+				continue
+			}
+		}
+
+		// If a word (or just a wide rune) does not fit in the window
+		if vloc.VisualX+wordwidth > w.bufWidth && vloc.VisualX > 0 {
+			vloc.Row++
+			vloc.VisualX = 0
+		}
+
+		if x == loc.X {
+			vloc.VisualX += wordoffset
+			return vloc
+		}
+		x++
+
+		vloc.VisualX += wordwidth
+
+		wordwidth = 0
+		wordoffset = 0
+
+		if vloc.VisualX >= w.bufWidth {
+			vloc.Row++
+			vloc.VisualX = 0
+		}
+	}
+	return vloc
+}
+
+func (w *BufWindow) getLocFromVLoc(svloc VLoc) buffer.Loc {
+	loc := buffer.Loc{X: 0, Y: svloc.Line}
+
+	if w.bufWidth <= 0 {
+		return loc
+	}
+
+	wordwrap := w.Buf.Settings["wordwrap"].(bool)
+	tabsize := util.IntOpt(w.Buf.Settings["tabsize"])
+
+	line := w.Buf.LineBytes(svloc.Line)
+	vloc := VLoc{SLoc: SLoc{svloc.Line, 0}, VisualX: 0}
+
+	totalwidth := 0
+
+	var widths []int
+	if wordwrap {
+		widths = make([]int, 0, w.bufWidth)
+	} else {
+		widths = make([]int, 0, 1)
+	}
+	wordwidth := 0
+
+	for len(line) > 0 {
+		r, _, size := util.DecodeCharacter(line)
+		line = line[size:]
+
+		width := 0
+		switch r {
+		case '\t':
+			ts := tabsize - (totalwidth % tabsize)
+			width = util.Min(ts, w.bufWidth-vloc.VisualX)
+			totalwidth += ts
+		default:
+			width = runewidth.RuneWidth(r)
+			totalwidth += width
+		}
+
+		widths = append(widths, width)
+		wordwidth += width
+
+		// Collect a complete word to know its width.
+		// If wordwrap is off, every single character is a complete "word".
+		if wordwrap {
+			if !util.IsWhitespace(r) && len(line) > 0 && wordwidth < w.bufWidth {
+				continue
+			}
+		}
+
+		// If a word (or just a wide rune) does not fit in the window
+		if vloc.VisualX+wordwidth > w.bufWidth && vloc.VisualX > 0 {
+			if vloc.Row == svloc.Row {
+				if wordwrap {
+					// it's a word, not a wide rune
+					loc.X--
+				}
+				return loc
+			}
+			vloc.Row++
+			vloc.VisualX = 0
+		}
+
+		for i := range widths {
+			vloc.VisualX += widths[i]
+			if vloc.Row == svloc.Row && vloc.VisualX > svloc.VisualX {
+				return loc
+			}
+			loc.X++
+		}
+
+		widths = widths[:0]
+		wordwidth = 0
+
+		if vloc.VisualX >= w.bufWidth {
+			vloc.Row++
+			vloc.VisualX = 0
+		}
+	}
+	return loc
+}
+
+func (w *BufWindow) getRowCount(line int) int {
+	eol := buffer.Loc{X: util.CharacterCount(w.Buf.LineBytes(line)), Y: line}
+	return w.getVLocFromLoc(eol).Row + 1
+}
+
+func (w *BufWindow) scrollUp(s SLoc, n int) SLoc {
+	for n > 0 {
+		if n <= s.Row {
+			s.Row -= n
+			n = 0
+		} else if s.Line > 0 {
+			s.Line--
+			n -= s.Row + 1
+			s.Row = w.getRowCount(s.Line) - 1
+		} else {
+			s.Row = 0
+			break
+		}
+	}
+	return s
+}
+
+func (w *BufWindow) scrollDown(s SLoc, n int) SLoc {
+	for n > 0 {
+		rc := w.getRowCount(s.Line)
+		if n < rc-s.Row {
+			s.Row += n
+			n = 0
+		} else if s.Line < w.Buf.LinesNum()-1 {
+			s.Line++
+			n -= rc - s.Row
+			s.Row = 0
+		} else {
+			s.Row = rc - 1
+			break
+		}
+	}
+	return s
+}
+
+func (w *BufWindow) scroll(s SLoc, n int) SLoc {
+	if n < 0 {
+		return w.scrollUp(s, -n)
+	}
+	return w.scrollDown(s, n)
+}
+
+func (w *BufWindow) diff(s1, s2 SLoc) int {
+	n := 0
+	for s1.LessThan(s2) {
+		if s1.Line < s2.Line {
+			n += w.getRowCount(s1.Line) - s1.Row
+			s1.Line++
+			s1.Row = 0
+		} else {
+			n += s2.Row - s1.Row
+			s1.Row = s2.Row
+		}
+	}
+	return n
+}
+
+// Scroll returns the location which is n visual lines below the location s
+// i.e. the result of scrolling n lines down. n can be negative,
+// which means scrolling up. The returned location is guaranteed to be
+// within the buffer boundaries.
+func (w *BufWindow) Scroll(s SLoc, n int) SLoc {
+	if !w.Buf.Settings["softwrap"].(bool) {
+		s.Line += n
+		if s.Line < 0 {
+			s.Line = 0
+		}
+		if s.Line > w.Buf.LinesNum()-1 {
+			s.Line = w.Buf.LinesNum() - 1
+		}
+		return s
+	}
+	return w.scroll(s, n)
+}
+
+// Diff returns the difference (the vertical distance) between two SLocs.
+func (w *BufWindow) Diff(s1, s2 SLoc) int {
+	if !w.Buf.Settings["softwrap"].(bool) {
+		return s2.Line - s1.Line
+	}
+	if s1.GreaterThan(s2) {
+		return -w.diff(s2, s1)
+	}
+	return w.diff(s1, s2)
+}
+
+// SLocFromLoc takes a position in the buffer and returns the location
+// of the visual line containing this position.
+func (w *BufWindow) SLocFromLoc(loc buffer.Loc) SLoc {
+	if !w.Buf.Settings["softwrap"].(bool) {
+		return SLoc{loc.Y, 0}
+	}
+	return w.getVLocFromLoc(loc).SLoc
+}
+
+// VLocFromLoc takes a position in the buffer and returns the corresponding
+// visual location in the linewrapped buffer.
+func (w *BufWindow) VLocFromLoc(loc buffer.Loc) VLoc {
+	if !w.Buf.Settings["softwrap"].(bool) {
+		tabsize := util.IntOpt(w.Buf.Settings["tabsize"])
+
+		visualx := util.StringWidth(w.Buf.LineBytes(loc.Y), loc.X, tabsize)
+		return VLoc{SLoc{loc.Y, 0}, visualx}
+	}
+	return w.getVLocFromLoc(loc)
+}
+
+// LocFromVLoc takes a visual location in the linewrapped buffer and returns
+// the position in the buffer corresponding to this visual location.
+func (w *BufWindow) LocFromVLoc(vloc VLoc) buffer.Loc {
+	if !w.Buf.Settings["softwrap"].(bool) {
+		tabsize := util.IntOpt(w.Buf.Settings["tabsize"])
+
+		x := util.GetCharPosInLine(w.Buf.LineBytes(vloc.Line), vloc.VisualX, tabsize)
+		return buffer.Loc{x, vloc.Line}
+	}
+	return w.getLocFromVLoc(vloc)
+}

internal/display/statusline.go

@@ -3,21 +3,19 @@ package display
 import (
 	"bytes"
 	"fmt"
-	"path"
 	"regexp"
 	"strconv"
 	"strings"
-	"unicode/utf8"
 
 	luar "layeh.com/gopher-luar"
 
 	runewidth "github.com/mattn/go-runewidth"
 	lua "github.com/yuin/gopher-lua"
-	"github.com/zyedidia/micro/internal/buffer"
-	"github.com/zyedidia/micro/internal/config"
-	ulua "github.com/zyedidia/micro/internal/lua"
-	"github.com/zyedidia/micro/internal/screen"
-	"github.com/zyedidia/micro/internal/util"
+	"github.com/zyedidia/micro/v2/internal/buffer"
+	"github.com/zyedidia/micro/v2/internal/config"
+	ulua "github.com/zyedidia/micro/v2/internal/lua"
+	"github.com/zyedidia/micro/v2/internal/screen"
+	"github.com/zyedidia/micro/v2/internal/util"
 )
 
 // StatusLine represents the information line at the bottom
@@ -32,9 +30,6 @@ type StatusLine struct {
 
 var statusInfo = map[string]func(*buffer.Buffer) string{
 	"filename": func(b *buffer.Buffer) string {
-		if b.Settings["basename"].(bool) {
-			return path.Base(b.GetName())
-		}
 		return b.GetName()
 	},
 	"line": func(b *buffer.Buffer) string {
@@ -47,8 +42,17 @@ var statusInfo = map[string]func(*buffer.Buffer) string{
 		if b.Modified() {
 			return "+ "
 		}
+		if b.Type.Readonly {
+			return "[ro] "
+		}
 		return ""
 	},
+	"lines": func(b *buffer.Buffer) string {
+		return strconv.Itoa(b.LinesNum())
+	},
+	"percentage": func(b *buffer.Buffer) string {
+		return strconv.Itoa((b.GetActiveCursor().Y + 1) * 100 / b.LinesNum())
+	},
 }
 
 func SetStatusInfoFnLua(fn string) {
@@ -62,7 +66,7 @@ func SetStatusInfoFnLua(fn string) {
 		return
 	}
 	statusInfo[fn] = func(b *buffer.Buffer) string {
-		if pl == nil || !pl.IsEnabled() {
+		if pl == nil || !pl.IsLoaded() {
 			return ""
 		}
 		val, err := pl.Call(plFn, luar.New(ulua.L, b))
@@ -100,16 +104,16 @@ func (s *StatusLine) Display() {
 	// We'll draw the line at the lowest line in the window
 	y := s.win.Height + s.win.Y - 1
 
+	winX := s.win.X
+
 	b := s.win.Buf
 	// autocomplete suggestions (for the buffer, not for the infowindow)
 	if b.HasSuggestions && len(b.Suggestions) > 1 {
 		statusLineStyle := config.DefStyle.Reverse(true)
-		if style, ok := config.Colorscheme["statusline"]; ok {
+		if style, ok := config.Colorscheme["statusline.suggestions"]; ok {
+			statusLineStyle = style
+		} else if style, ok := config.Colorscheme["statusline"]; ok {
 			statusLineStyle = style
-		}
-		keymenuOffset := 0
-		if config.GetGlobalOption("keymenu").(bool) {
-			keymenuOffset = len(keydisplay)
 		}
 		x := 0
 		for j, sug := range b.Suggestions {
@@ -118,13 +122,13 @@ func (s *StatusLine) Display() {
 				style = style.Reverse(true)
 			}
 			for _, r := range sug {
-				screen.Screen.SetContent(x, y-keymenuOffset, r, nil, style)
+				screen.SetContent(winX+x, y, r, nil, style)
 				x++
 				if x >= s.win.Width {
 					return
 				}
 			}
-			screen.Screen.SetContent(x, y-keymenuOffset, ' ', nil, statusLineStyle)
+			screen.SetContent(winX+x, y, ' ', nil, statusLineStyle)
 			x++
 			if x >= s.win.Width {
 				return
@@ -132,7 +136,7 @@ func (s *StatusLine) Display() {
 		}
 
 		for x < s.win.Width {
-			screen.Screen.SetContent(x, y-keymenuOffset, ' ', nil, statusLineStyle)
+			screen.SetContent(winX+x, y, ' ', nil, statusLineStyle)
 			x++
 		}
 		return
@@ -145,7 +149,7 @@ func (s *StatusLine) Display() {
 			return []byte(fmt.Sprint(s.FindOpt(string(option))))
 		} else if bytes.HasPrefix(name, []byte("bind")) {
 			binding := string(name[5:])
-			for k, v := range config.Bindings {
+			for k, v := range config.Bindings["buffer"] {
 				if v == binding {
 					return []byte(k)
 				}
@@ -165,41 +169,50 @@ func (s *StatusLine) Display() {
 	rightText = formatParser.ReplaceAllFunc(rightText, formatter)
 
 	statusLineStyle := config.DefStyle.Reverse(true)
-	if style, ok := config.Colorscheme["statusline"]; ok {
-		statusLineStyle = style
+	if s.win.IsActive() {
+		if style, ok := config.Colorscheme["statusline"]; ok {
+			statusLineStyle = style
+		}
+	} else {
+		if style, ok := config.Colorscheme["statusline.inactive"]; ok {
+			statusLineStyle = style
+		} else if style, ok := config.Colorscheme["statusline"]; ok {
+			statusLineStyle = style
+		}
 	}
 
-	leftLen := util.StringWidth(leftText, utf8.RuneCount(leftText), 1)
-	rightLen := util.StringWidth(rightText, utf8.RuneCount(rightText), 1)
+	leftLen := util.StringWidth(leftText, util.CharacterCount(leftText), 1)
+	rightLen := util.StringWidth(rightText, util.CharacterCount(rightText), 1)
 
-	winX := s.win.X
 	for x := 0; x < s.win.Width; x++ {
 		if x < leftLen {
-			r, size := utf8.DecodeRune(leftText)
+			r, combc, size := util.DecodeCharacter(leftText)
 			leftText = leftText[size:]
 			rw := runewidth.RuneWidth(r)
 			for j := 0; j < rw; j++ {
 				c := r
 				if j > 0 {
 					c = ' '
+					combc = nil
 					x++
 				}
-				screen.Screen.SetContent(winX+x, y, c, nil, statusLineStyle)
+				screen.SetContent(winX+x, y, c, combc, statusLineStyle)
 			}
 		} else if x >= s.win.Width-rightLen && x < rightLen+s.win.Width-rightLen {
-			r, size := utf8.DecodeRune(rightText)
+			r, combc, size := util.DecodeCharacter(rightText)
 			rightText = rightText[size:]
 			rw := runewidth.RuneWidth(r)
 			for j := 0; j < rw; j++ {
 				c := r
 				if j > 0 {
 					c = ' '
+					combc = nil
 					x++
 				}
-				screen.Screen.SetContent(winX+x, y, c, nil, statusLineStyle)
+				screen.SetContent(winX+x, y, c, combc, statusLineStyle)
 			}
 		} else {
-			screen.Screen.SetContent(winX+x, y, ' ', nil, statusLineStyle)
+			screen.SetContent(winX+x, y, ' ', nil, statusLineStyle)
 		}
 	}
 }

internal/display/tabwindow.go

@@ -1,42 +1,45 @@
 package display
 
 import (
-	"unicode/utf8"
-
 	runewidth "github.com/mattn/go-runewidth"
-	"github.com/zyedidia/micro/internal/buffer"
-	"github.com/zyedidia/micro/internal/config"
-	"github.com/zyedidia/micro/internal/screen"
-	"github.com/zyedidia/micro/internal/util"
+	"github.com/zyedidia/tcell/v2"
+	"github.com/zyedidia/micro/v2/internal/buffer"
+	"github.com/zyedidia/micro/v2/internal/config"
+	"github.com/zyedidia/micro/v2/internal/screen"
+	"github.com/zyedidia/micro/v2/internal/util"
 )
 
 type TabWindow struct {
 	Names   []string
 	active  int
 	Y       int
-	width   int
+	Width   int
 	hscroll int
 }
 
 func NewTabWindow(w int, y int) *TabWindow {
 	tw := new(TabWindow)
-	tw.width = w
+	tw.Width = w
 	tw.Y = y
 	return tw
 }
 
+func (w *TabWindow) Resize(width, height int) {
+	w.Width = width
+}
+
 func (w *TabWindow) LocFromVisual(vloc buffer.Loc) int {
 	x := -w.hscroll
 
 	for i, n := range w.Names {
 		x++
-		s := utf8.RuneCountInString(n)
+		s := util.CharacterCountInString(n)
 		if vloc.Y == w.Y && vloc.X < x+s {
 			return i
 		}
 		x += s
 		x += 3
-		if x >= w.width {
+		if x >= w.Width {
 			break
 		}
 	}
@@ -45,13 +48,18 @@ func (w *TabWindow) LocFromVisual(vloc buffer.Loc) int {
 
 func (w *TabWindow) Scroll(amt int) {
 	w.hscroll += amt
-	w.hscroll = util.Clamp(w.hscroll, 0, w.TotalSize()-w.width)
+	s := w.TotalSize()
+	w.hscroll = util.Clamp(w.hscroll, 0, s-w.Width)
+
+	if s-w.Width <= 0 {
+		w.hscroll = 0
+	}
 }
 
 func (w *TabWindow) TotalSize() int {
 	sum := 2
 	for _, n := range w.Names {
-		sum += utf8.RuneCountInString(n) + 4
+		sum += runewidth.StringWidth(n) + 4
 	}
 	return sum - 4
 }
@@ -64,25 +72,54 @@ func (w *TabWindow) SetActive(a int) {
 	w.active = a
 	x := 2
 	s := w.TotalSize()
+
 	for i, n := range w.Names {
-		c := utf8.RuneCountInString(n)
+		c := util.CharacterCountInString(n)
 		if i == a {
-			if x+c >= w.hscroll+w.width {
-				w.hscroll = util.Clamp(x+c+1-w.width, 0, s-w.width)
+			if x+c >= w.hscroll+w.Width {
+				w.hscroll = util.Clamp(x+c+1-w.Width, 0, s-w.Width)
 			} else if x < w.hscroll {
-				w.hscroll = util.Clamp(x-4, 0, s-w.width)
+				w.hscroll = util.Clamp(x-4, 0, s-w.Width)
 			}
 			break
 		}
 		x += c + 4
 	}
+
+	if s-w.Width <= 0 {
+		w.hscroll = 0
+	}
 }
 
 func (w *TabWindow) Display() {
 	x := -w.hscroll
 	done := false
 
-	draw := func(r rune, n int) {
+	globalTabReverse := config.GetGlobalOption("tabreverse").(bool)
+	globalTabHighlight := config.GetGlobalOption("tabhighlight").(bool)
+
+	// xor of reverse and tab highlight to get tab character (as in filename and surrounding characters) reverse state
+	tabCharHighlight := (globalTabReverse || globalTabHighlight) && !(globalTabReverse && globalTabHighlight)
+
+	reverseStyles := func(reverse bool) (tcell.Style, tcell.Style) {
+		tabBarStyle := config.DefStyle.Reverse(reverse)
+		if style, ok := config.Colorscheme["tabbar"]; ok {
+			tabBarStyle = style
+		}
+		tabBarActiveStyle := tabBarStyle
+		if style, ok := config.Colorscheme["tabbar.active"]; ok {
+			tabBarActiveStyle = style
+		}
+		return tabBarStyle, tabBarActiveStyle
+	}
+	
+	draw := func(r rune, n int, active bool, reversed bool) {
+		tabBarStyle, tabBarActiveStyle := reverseStyles(reversed)
+		
+		style := tabBarStyle
+		if active {
+			style = tabBarActiveStyle
+		}
 		for i := 0; i < n; i++ {
 			rw := runewidth.RuneWidth(r)
 			for j := 0; j < rw; j++ {
@@ -90,14 +127,14 @@ func (w *TabWindow) Display() {
 				if j > 0 {
 					c = ' '
 				}
-				if x == w.width-1 && !done {
-					screen.Screen.SetContent(w.width-1, w.Y, '>', nil, config.DefStyle.Reverse(true))
+				if x == w.Width-1 && !done {
+					screen.SetContent(w.Width-1, w.Y, '>', nil, tabBarStyle)
 					x++
 					break
 				} else if x == 0 && w.hscroll > 0 {
-					screen.Screen.SetContent(0, w.Y, '<', nil, config.DefStyle.Reverse(true))
-				} else if x >= 0 && x < w.width {
-					screen.Screen.SetContent(x, w.Y, c, nil, config.DefStyle.Reverse(true))
+					screen.SetContent(0, w.Y, '<', nil, tabBarStyle)
+				} else if x >= 0 && x < w.Width {
+					screen.SetContent(x, w.Y, c, nil, style)
 				}
 				x++
 			}
@@ -106,28 +143,33 @@ func (w *TabWindow) Display() {
 
 	for i, n := range w.Names {
 		if i == w.active {
-			draw('[', 1)
+			draw('[', 1, true, tabCharHighlight)
 		} else {
-			draw(' ', 1)
+			draw(' ', 1, false, tabCharHighlight)
 		}
+		
 		for _, c := range n {
-			draw(c, 1)
+			draw(c, 1, i == w.active, tabCharHighlight)
 		}
+		
 		if i == len(w.Names)-1 {
 			done = true
 		}
+		
 		if i == w.active {
-			draw(']', 1)
-			draw(' ', 2)
+			draw(']', 1, true, tabCharHighlight)
+			draw(' ', 2, true, globalTabReverse)
 		} else {
-			draw(' ', 3)
+			draw(' ', 1, false, tabCharHighlight)
+			draw(' ', 2, false, globalTabReverse)
 		}
-		if x >= w.width {
+		
+		if x >= w.Width {
 			break
 		}
 	}
 
-	if x < w.width {
-		draw(' ', w.width-x)
+	if x < w.Width {
+		draw(' ', w.Width-x, false, globalTabReverse)
 	}
 }

internal/display/termwindow.go

@@ -1,13 +1,12 @@
 package display
 
 import (
-	"unicode/utf8"
-
-	"github.com/zyedidia/micro/internal/buffer"
-	"github.com/zyedidia/micro/internal/config"
-	"github.com/zyedidia/micro/internal/screen"
-	"github.com/zyedidia/micro/internal/shell"
-	"github.com/zyedidia/tcell"
+	"github.com/zyedidia/micro/v2/internal/buffer"
+	"github.com/zyedidia/micro/v2/internal/config"
+	"github.com/zyedidia/micro/v2/internal/screen"
+	"github.com/zyedidia/micro/v2/internal/shell"
+	"github.com/zyedidia/micro/v2/internal/util"
+	"github.com/zyedidia/tcell/v2"
 	"github.com/zyedidia/terminal"
 )
 
@@ -51,7 +50,7 @@ func (w *TermWindow) LocFromVisual(vloc buffer.Loc) buffer.Loc {
 func (w *TermWindow) Clear() {
 	for y := 0; y < w.Height; y++ {
 		for x := 0; x < w.Width; x++ {
-			screen.Screen.SetContent(w.X+x, w.Y+y, ' ', nil, config.DefStyle)
+			screen.SetContent(w.X+x, w.Y+y, ' ', nil, config.DefStyle)
 		}
 	}
 }
@@ -82,13 +81,13 @@ func (w *TermWindow) Display() {
 			if b == terminal.DefaultBG {
 				bg = int(tcell.ColorDefault)
 			}
-			st := tcell.StyleDefault.Foreground(config.GetColor256(int(fg))).Background(config.GetColor256(int(bg)))
+			st := tcell.StyleDefault.Foreground(config.GetColor256(fg)).Background(config.GetColor256(bg))
 
 			if l.LessThan(w.Selection[1]) && l.GreaterEqual(w.Selection[0]) || l.LessThan(w.Selection[0]) && l.GreaterEqual(w.Selection[1]) {
 				st = st.Reverse(true)
 			}
 
-			screen.Screen.SetContent(w.X+x, w.Y+y, c, nil, st)
+			screen.SetContent(w.X+x, w.Y+y, c, nil, st)
 		}
 	}
 	if config.GetGlobalOption("statusline").(bool) {
@@ -98,19 +97,19 @@ func (w *TermWindow) Display() {
 		}
 
 		text := []byte(w.Name())
-		textLen := utf8.RuneCount(text)
+		textLen := util.CharacterCount(text)
 		for x := 0; x < w.Width; x++ {
 			if x < textLen {
-				r, size := utf8.DecodeRune(text)
+				r, combc, size := util.DecodeCharacter(text)
 				text = text[size:]
-				screen.Screen.SetContent(w.X+x, w.Y+w.Height, r, nil, statusLineStyle)
+				screen.SetContent(w.X+x, w.Y+w.Height, r, combc, statusLineStyle)
 			} else {
-				screen.Screen.SetContent(w.X+x, w.Y+w.Height, ' ', nil, statusLineStyle)
+				screen.SetContent(w.X+x, w.Y+w.Height, ' ', nil, statusLineStyle)
 			}
 		}
 	}
 	if w.State.CursorVisible() && w.active {
 		curx, cury := w.State.Cursor()
-		screen.Screen.ShowCursor(curx+w.X, cury+w.Y)
+		screen.ShowCursor(curx+w.X, cury+w.Y)
 	}
 }

internal/display/uiwindow.go

@@ -1,10 +1,11 @@
 package display
 
 import (
-	"github.com/zyedidia/micro/internal/buffer"
-	"github.com/zyedidia/micro/internal/config"
-	"github.com/zyedidia/micro/internal/screen"
-	"github.com/zyedidia/micro/internal/views"
+	"github.com/zyedidia/micro/v2/internal/buffer"
+	"github.com/zyedidia/micro/v2/internal/config"
+	"github.com/zyedidia/micro/v2/internal/screen"
+	"github.com/zyedidia/micro/v2/internal/util"
+	"github.com/zyedidia/micro/v2/internal/views"
 )
 
 type UIWindow struct {
@@ -24,16 +25,27 @@ func (w *UIWindow) drawNode(n *views.Node) {
 		dividerStyle = style
 	}
 
+	divchars := config.GetGlobalOption("divchars").(string)
+	if util.CharacterCountInString(divchars) != 2 {
+		divchars = "|-"
+	}
+
+	divchar, combc, _ := util.DecodeCharacterInString(divchars)
+
+	divreverse := config.GetGlobalOption("divreverse").(bool)
+	if divreverse {
+		dividerStyle = dividerStyle.Reverse(true)
+	}
+
 	for i, c := range cs {
-		if c.IsLeaf() && c.Kind == views.STVert {
+		if c.Kind == views.STVert {
 			if i != len(cs)-1 {
 				for h := 0; h < c.H; h++ {
-					screen.Screen.SetContent(c.X+c.W, c.Y+h, '|', nil, dividerStyle.Reverse(true))
+					screen.SetContent(c.X+c.W, c.Y+h, divchar, combc, dividerStyle)
 				}
 			}
-		} else {
-			w.drawNode(c)
 		}
+		w.drawNode(c)
 	}
 }
 
@@ -41,32 +53,32 @@ func (w *UIWindow) Display() {
 	w.drawNode(w.root)
 }
 
-func (w *UIWindow) GetMouseSplitID(vloc buffer.Loc) uint64 {
-	var mouseLoc func(*views.Node) uint64
-	mouseLoc = func(n *views.Node) uint64 {
+func (w *UIWindow) GetMouseSplitNode(vloc buffer.Loc) *views.Node {
+	var mouseLoc func(*views.Node) *views.Node
+	mouseLoc = func(n *views.Node) *views.Node {
 		cs := n.Children()
 		for i, c := range cs {
 			if c.Kind == views.STVert {
 				if i != len(cs)-1 {
 					if vloc.X == c.X+c.W && vloc.Y >= c.Y && vloc.Y < c.Y+c.H {
-						return c.ID()
+						return c
 					}
 				}
 			} else if c.Kind == views.STHoriz {
 				if i != len(cs)-1 {
 					if vloc.Y == c.Y+c.H-1 && vloc.X >= c.X && vloc.X < c.X+c.W {
-						return c.ID()
+						return c
 					}
 				}
 			}
 		}
 		for _, c := range cs {
 			m := mouseLoc(c)
-			if m != 0 {
+			if m != nil {
 				return m
 			}
 		}
-		return 0
+		return nil
 	}
 	return mouseLoc(w.root)
 }

internal/display/window.go

@@ -1,17 +1,20 @@
 package display
 
 import (
-	"github.com/zyedidia/micro/internal/buffer"
+	"github.com/zyedidia/micro/v2/internal/buffer"
 )
 
 type View struct {
 	X, Y          int // X,Y location of the view
 	Width, Height int // Width and height of the view
 
-	// Start line and start column of the view (vertical/horizontal scroll)
+	// Start line of the view (for vertical scroll)
+	StartLine SLoc
+
+	// Start column of the view (for horizontal scroll)
 	// note that since the starting column of every line is different if the view
 	// is scrolled, StartCol is a visual index (will be the same for every line)
-	StartLine, StartCol int
+	StartCol int
 }
 
 type Window interface {
@@ -28,5 +31,7 @@ type Window interface {
 
 type BWindow interface {
 	Window
+	SoftWrap
 	SetBuffer(b *buffer.Buffer)
+	BufView() View
 }

internal/info/history.go

@@ -3,8 +3,11 @@ package info
 import (
 	"encoding/gob"
 	"os"
+	"path/filepath"
+	"strings"
 
-	"github.com/zyedidia/micro/internal/config"
+	"github.com/zyedidia/micro/v2/internal/config"
+	"github.com/zyedidia/micro/v2/internal/util"
 )
 
 // LoadHistory attempts to load user history from configDir/buffers/history
@@ -12,10 +15,10 @@ import (
 // The savehistory option must be on
 func (i *InfoBuf) LoadHistory() {
 	if config.GetGlobalOption("savehistory").(bool) {
-		file, err := os.Open(config.ConfigDir + "/buffers/history")
-		defer file.Close()
+		file, err := os.Open(filepath.Join(config.ConfigDir, "buffers", "history"))
 		var decodedMap map[string][]string
 		if err == nil {
+			defer file.Close()
 			decoder := gob.NewDecoder(file)
 			err = decoder.Decode(&decodedMap)
 
@@ -46,9 +49,9 @@ func (i *InfoBuf) SaveHistory() {
 			}
 		}
 
-		file, err := os.Create(config.ConfigDir + "/buffers/history")
-		defer file.Close()
+		file, err := os.Create(filepath.Join(config.ConfigDir, "buffers", "history"))
 		if err == nil {
+			defer file.Close()
 			encoder := gob.NewEncoder(file)
 
 			err = encoder.Encode(i.History)
@@ -60,6 +63,30 @@ func (i *InfoBuf) SaveHistory() {
 	}
 }
 
+// AddToHistory adds a new item to the history for the prompt type `ptype`.
+// This function is not used by micro itself. It is useful for plugins
+// which add their own items to the history, bypassing the infobar command line.
+func (i *InfoBuf) AddToHistory(ptype string, item string) {
+	if i.HasPrompt && i.PromptType == ptype {
+		return
+	}
+
+	if _, ok := i.History[ptype]; !ok {
+		i.History[ptype] = []string{item}
+	} else {
+		i.History[ptype] = append(i.History[ptype], item)
+
+		// avoid duplicates
+		h := i.History[ptype]
+		for j := len(h) - 2; j >= 0; j-- {
+			if h[j] == h[len(h)-1] {
+				i.History[ptype] = append(h[:j], h[j+1:]...)
+				break
+			}
+		}
+	}
+}
+
 // UpHistory fetches the previous item in the history
 func (i *InfoBuf) UpHistory(history []string) {
 	if i.HistoryNum > 0 && i.HasPrompt && !i.HasYN {
@@ -77,3 +104,51 @@ func (i *InfoBuf) DownHistory(history []string) {
 		i.Buffer.GetActiveCursor().GotoLoc(i.End())
 	}
 }
+
+// SearchUpHistory fetches the previous item in the history
+// beginning with the text in the infobuffer before cursor
+func (i *InfoBuf) SearchUpHistory(history []string) {
+	if i.HistoryNum > 0 && i.HasPrompt && !i.HasYN {
+		i.searchHistory(history, false)
+	}
+}
+
+// SearchDownHistory fetches the next item in the history
+// beginning with the text in the infobuffer before cursor
+func (i *InfoBuf) SearchDownHistory(history []string) {
+	if i.HistoryNum < len(history)-1 && i.HasPrompt && !i.HasYN {
+		i.searchHistory(history, true)
+	}
+}
+
+func (i *InfoBuf) searchHistory(history []string, down bool) {
+	line := string(i.LineBytes(0))
+	c := i.Buffer.GetActiveCursor()
+
+	if !i.HistorySearch || !strings.HasPrefix(line, i.HistorySearchPrefix) {
+		i.HistorySearch = true
+		i.HistorySearchPrefix = util.SliceStartStr(line, c.X)
+	}
+
+	found := -1
+	if down {
+		for j := i.HistoryNum + 1; j < len(history); j++ {
+			if strings.HasPrefix(history[j], i.HistorySearchPrefix) {
+				found = j
+				break
+			}
+		}
+	} else {
+		for j := i.HistoryNum - 1; j >= 0; j-- {
+			if strings.HasPrefix(history[j], i.HistorySearchPrefix) {
+				found = j
+				break
+			}
+		}
+	}
+	if found != -1 {
+		i.HistoryNum = found
+		i.Replace(i.Start(), i.End(), history[found])
+		c.GotoLoc(i.End())
+	}
+}

internal/info/infobuffer.go

@@ -2,14 +2,8 @@ package info
 
 import (
 	"fmt"
-	"strings"
 
-	"github.com/zyedidia/micro/internal/buffer"
-	luar "layeh.com/gopher-luar"
-
-	"github.com/zyedidia/micro/internal/config"
-	ulua "github.com/zyedidia/micro/internal/lua"
-	"github.com/zyedidia/micro/internal/screen"
+	"github.com/zyedidia/micro/v2/internal/buffer"
 )
 
 // The InfoBuf displays messages and other info at the bottom of the screen.
@@ -31,6 +25,10 @@ type InfoBuf struct {
 	// It's a map of history type -> history array
 	History    map[string][]string
 	HistoryNum int
+	// HistorySearch indicates whether we are searching for history items
+	// beginning with HistorySearchPrefix
+	HistorySearch       bool
+	HistorySearchPrefix string
 
 	// Is the current message a message from the gutter
 	HasGutter bool
@@ -60,7 +58,7 @@ func (i *InfoBuf) Close() {
 func (i *InfoBuf) Message(msg ...interface{}) {
 	// only display a new message if there isn't an active prompt
 	// this is to prevent overwriting an existing prompt to the user
-	if i.HasPrompt == false {
+	if !i.HasPrompt {
 		displayMessage := fmt.Sprint(msg...)
 		// if there is no active prompt then style and display the message as normal
 		i.Msg = displayMessage
@@ -84,7 +82,7 @@ func (i *InfoBuf) ClearGutter() {
 func (i *InfoBuf) Error(msg ...interface{}) {
 	// only display a new message if there isn't an active prompt
 	// this is to prevent overwriting an existing prompt to the user
-	if i.HasPrompt == false {
+	if !i.HasPrompt {
 		// if there is no active prompt then style and display the message as normal
 		i.Msg = fmt.Sprint(msg...)
 		i.HasMessage, i.HasError = false, true
@@ -108,6 +106,7 @@ func (i *InfoBuf) Prompt(prompt string, msg string, ptype string, eventcb func(s
 		i.History[ptype] = append(i.History[ptype], "")
 	}
 	i.HistoryNum = len(i.History[ptype]) - 1
+	i.HistorySearch = false
 
 	i.PromptType = ptype
 	i.Msg = prompt
@@ -134,63 +133,6 @@ func (i *InfoBuf) YNPrompt(prompt string, donecb func(bool, bool)) {
 	i.YNCallback = donecb
 }
 
-// PlugPrompt provides a plugin interface for calling "Prompt" with the appropriate Lua callbacks
-func (i *InfoBuf) PlugPrompt(prompt string, msg string, ptype string, eventcb string, donecb string) {
-	eventLuaFn := strings.Split(eventcb, ".")
-	doneLuaFn := strings.Split(donecb, ".")
-	var luaEventcb func(string)
-	var luaDonecb func(string, bool)
-
-	if len(eventLuaFn) == 2 {
-		plName, plFn := doneLuaFn[0], doneLuaFn[1]
-		pl := config.FindPlugin(plName)
-		if pl != nil {
-			luaEventcb = func(resp string) {
-				_, err := pl.Call(plFn, luar.New(ulua.L, resp))
-				if err != nil && err != config.ErrNoSuchFunction {
-					screen.TermMessage(err)
-				}
-			}
-		}
-	}
-
-	if len(doneLuaFn) == 2 {
-		plName, plFn := doneLuaFn[0], doneLuaFn[1]
-		pl := config.FindPlugin(plName)
-		if pl != nil {
-			luaDonecb = func(resp string, canceled bool) {
-				_, err := pl.Call(plFn, luar.New(ulua.L, resp), luar.New(ulua.L, canceled))
-				if err != nil && err != config.ErrNoSuchFunction {
-					screen.TermMessage(err)
-				}
-			}
-		}
-	}
-
-	i.Prompt(prompt, msg, ptype, luaEventcb, luaDonecb)
-}
-
-// PlugYNPrompt provides a plugin interface for calling "YNPrompt" with the appropriate Lua callbacks
-func (i *InfoBuf) PlugYNPrompt(prompt string, donecb string) {
-	doneLuaFn := strings.Split(donecb, ".")
-	var luaDonecb func(bool, bool)
-
-	if len(doneLuaFn) == 2 {
-		plName, plFn := doneLuaFn[0], doneLuaFn[1]
-		pl := config.FindPlugin(plName)
-		if pl != nil {
-			luaDonecb = func(resp bool, canceled bool) {
-				_, err := pl.Call(plFn, luar.New(ulua.L, resp), luar.New(ulua.L, canceled))
-				if err != nil && err != config.ErrNoSuchFunction {
-					screen.TermMessage(err)
-				}
-			}
-		}
-	}
-
-	i.YNPrompt(prompt, luaDonecb)
-}
-
 // DonePrompt finishes the current prompt and indicates whether or not it was canceled
 func (i *InfoBuf) DonePrompt(canceled bool) {
 	hadYN := i.HasYN
@@ -200,18 +142,27 @@ func (i *InfoBuf) DonePrompt(canceled bool) {
 	if !hadYN {
 		if i.PromptCallback != nil {
 			if canceled {
+				i.Replace(i.Start(), i.End(), "")
 				i.PromptCallback("", true)
 				h := i.History[i.PromptType]
 				i.History[i.PromptType] = h[:len(h)-1]
 			} else {
 				resp := string(i.LineBytes(0))
+				i.Replace(i.Start(), i.End(), "")
 				i.PromptCallback(resp, false)
 				h := i.History[i.PromptType]
 				h[len(h)-1] = resp
+
+				// avoid duplicates
+				for j := len(h) - 2; j >= 0; j-- {
+					if h[j] == h[len(h)-1] {
+						i.History[i.PromptType] = append(h[:j], h[j+1:]...)
+						break
+					}
+				}
 			}
-			i.PromptCallback = nil
+			// i.PromptCallback = nil
 		}
-		i.Replace(i.Start(), i.End(), "")
 	}
 	if i.YNCallback != nil && hadYN {
 		i.YNCallback(i.YNResp, canceled)

internal/lua/lua.go

@@ -1,6 +1,7 @@
 package lua
 
 import (
+	"archive/zip"
 	"bytes"
 	"errors"
 	"fmt"
@@ -9,20 +10,24 @@ import (
 	"math"
 	"math/rand"
 	"net"
+	"net/http"
 	"os"
 	"path"
 	"path/filepath"
 	"regexp"
 	"runtime"
 	"strings"
+	"sync"
 	"time"
 	"unicode/utf8"
 
+	humanize "github.com/dustin/go-humanize"
 	lua "github.com/yuin/gopher-lua"
 	luar "layeh.com/gopher-luar"
 )
 
 var L *lua.LState
+var Lock sync.Mutex
 
 // LoadFile loads a lua file
 func LoadFile(module string, file string, data []byte) error {
@@ -69,6 +74,12 @@ func Import(pkg string) *lua.LTable {
 		return importTime()
 	case "unicode/utf8", "utf8":
 		return importUtf8()
+	case "humanize":
+		return importHumanize()
+	case "net/http", "http":
+		return importHTTP()
+	case "archive/zip":
+		return importArchiveZip()
 	default:
 		return nil
 	}
@@ -365,9 +376,9 @@ func importOs() *lua.LTable {
 	L.SetField(pkg, "Remove", luar.New(L, os.Remove))
 	L.SetField(pkg, "RemoveAll", luar.New(L, os.RemoveAll))
 	L.SetField(pkg, "Rename", luar.New(L, os.Rename))
-	L.SetField(pkg, "SEEK_CUR", luar.New(L, os.SEEK_CUR))
-	L.SetField(pkg, "SEEK_END", luar.New(L, os.SEEK_END))
-	L.SetField(pkg, "SEEK_SET", luar.New(L, os.SEEK_SET))
+	L.SetField(pkg, "SEEK_CUR", luar.New(L, io.SeekCurrent))
+	L.SetField(pkg, "SEEK_END", luar.New(L, io.SeekEnd))
+	L.SetField(pkg, "SEEK_SET", luar.New(L, io.SeekStart))
 	L.SetField(pkg, "SameFile", luar.New(L, os.SameFile))
 	L.SetField(pkg, "Setenv", luar.New(L, os.Setenv))
 	L.SetField(pkg, "StartProcess", luar.New(L, os.StartProcess))
@@ -378,6 +389,7 @@ func importOs() *lua.LTable {
 	L.SetField(pkg, "Symlink", luar.New(L, os.Symlink))
 	L.SetField(pkg, "TempDir", luar.New(L, os.TempDir))
 	L.SetField(pkg, "Truncate", luar.New(L, os.Truncate))
+	L.SetField(pkg, "UserHomeDir", luar.New(L, os.UserHomeDir))
 
 	return pkg
 }
@@ -556,3 +568,31 @@ func importUtf8() *lua.LTable {
 
 	return pkg
 }
+
+func importHumanize() *lua.LTable {
+	pkg := L.NewTable()
+
+	L.SetField(pkg, "Bytes", luar.New(L, humanize.Bytes))
+	L.SetField(pkg, "Ordinal", luar.New(L, humanize.Ordinal))
+
+	return pkg
+}
+
+func importHTTP() *lua.LTable {
+	pkg := L.NewTable()
+
+	L.SetField(pkg, "Get", luar.New(L, http.Get))
+	L.SetField(pkg, "Post", luar.New(L, http.Post))
+
+	return pkg
+}
+
+func importArchiveZip() *lua.LTable {
+	pkg := L.NewTable()
+
+	L.SetField(pkg, "OpenReader", luar.New(L, zip.OpenReader))
+	L.SetField(pkg, "NewReader", luar.New(L, zip.NewReader))
+	L.SetField(pkg, "NewWriter", luar.New(L, zip.NewWriter))
+
+	return pkg
+}

internal/screen/screen.go

@@ -1,13 +1,14 @@
 package screen
 
 import (
-	"fmt"
+	"errors"
+	"log"
 	"os"
 	"sync"
 
-	"github.com/zyedidia/micro/internal/config"
-	"github.com/zyedidia/micro/pkg/terminfo"
-	"github.com/zyedidia/tcell"
+	"github.com/zyedidia/micro/v2/internal/config"
+	"github.com/zyedidia/micro/v2/internal/util"
+	"github.com/zyedidia/tcell/v2"
 )
 
 // Screen is the tcell screen we use to draw to the terminal
@@ -17,19 +18,103 @@ import (
 // screen. TODO: maybe we should worry about polling and drawing at the
 // same time too.
 var Screen tcell.Screen
-var lock sync.Mutex
-var DrawChan chan bool
 
+// Events is the channel of tcell events
+var Events chan (tcell.Event)
+
+// The lock is necessary since the screen is polled on a separate thread
+var lock sync.Mutex
+
+// drawChan is a channel that will cause the screen to redraw when
+// written to even if no event user event has occurred
+var drawChan chan bool
+
+// Lock locks the screen lock
 func Lock() {
 	lock.Lock()
 }
 
+// Unlock unlocks the screen lock
 func Unlock() {
 	lock.Unlock()
 }
 
+// Redraw schedules a redraw with the draw channel
 func Redraw() {
-	DrawChan <- true
+	select {
+	case drawChan <- true:
+	default:
+		// channel is full
+	}
+}
+
+// DrawChan returns the draw channel
+func DrawChan() chan bool {
+	return drawChan
+}
+
+type screenCell struct {
+	x, y  int
+	r     rune
+	combc []rune
+	style tcell.Style
+}
+
+var lastCursor screenCell
+
+// ShowFakeCursor displays a cursor at the given position by modifying the
+// style of the given column instead of actually using the terminal cursor
+// This can be useful in certain terminals such as the windows console where
+// modifying the cursor location is slow and frequent modifications cause flashing
+// This keeps track of the most recent fake cursor location and resets it when
+// a new fake cursor location is specified
+func ShowFakeCursor(x, y int) {
+	r, combc, style, _ := Screen.GetContent(x, y)
+	Screen.SetContent(lastCursor.x, lastCursor.y, lastCursor.r, lastCursor.combc, lastCursor.style)
+	Screen.SetContent(x, y, r, combc, config.DefStyle.Reverse(true))
+
+	lastCursor.x, lastCursor.y = x, y
+	lastCursor.r = r
+	lastCursor.combc = combc
+	lastCursor.style = style
+}
+
+func UseFake() bool {
+	return util.FakeCursor || config.GetGlobalOption("fakecursor").(bool)
+}
+
+// ShowFakeCursorMulti is the same as ShowFakeCursor except it does not
+// reset previous locations of the cursor
+// Fake cursors are also necessary to display multiple cursors
+func ShowFakeCursorMulti(x, y int) {
+	r, _, _, _ := Screen.GetContent(x, y)
+	Screen.SetContent(x, y, r, nil, config.DefStyle.Reverse(true))
+}
+
+// ShowCursor puts the cursor at the given location using a fake cursor
+// if enabled or using the terminal cursor otherwise
+// By default only the windows console will use a fake cursor
+func ShowCursor(x, y int) {
+	if UseFake() {
+		ShowFakeCursor(x, y)
+	} else {
+		Screen.ShowCursor(x, y)
+	}
+}
+
+// SetContent sets a cell at a point on the screen and makes sure that it is
+// synced with the last cursor location
+func SetContent(x, y int, mainc rune, combc []rune, style tcell.Style) {
+	if !Screen.CanDisplay(mainc, true) {
+		mainc = '<27>'
+	}
+
+	Screen.SetContent(x, y, mainc, combc, style)
+	if UseFake() && lastCursor.x == x && lastCursor.y == y {
+		lastCursor.r = mainc
+		lastCursor.style = style
+		lastCursor.combc = combc
+	}
 }
 
 // TempFini shuts the screen down temporarily
@@ -53,52 +138,48 @@ func TempStart(screenWasNil bool) {
 }
 
 // Init creates and initializes the tcell screen
-func Init() {
-	DrawChan = make(chan bool, 8)
+func Init() error {
+	drawChan = make(chan bool, 8)
 
 	// Should we enable true color?
 	truecolor := os.Getenv("MICRO_TRUECOLOR") == "1"
 
-	tcelldb := os.Getenv("TCELLDB")
-	os.Setenv("TCELLDB", config.ConfigDir+"/.tcelldb")
+	if !truecolor {
+		os.Setenv("TCELL_TRUECOLOR", "disable")
+	}
 
-	// In order to enable true color, we have to set the TERM to `xterm-truecolor` when
-	// initializing tcell, but after that, we can set the TERM back to whatever it was
-	oldTerm := os.Getenv("TERM")
-	if truecolor {
-		os.Setenv("TERM", "xterm-truecolor")
+	var oldTerm string
+	modifiedTerm := false
+	setXterm := func() {
+		oldTerm = os.Getenv("TERM")
+		os.Setenv("TERM", "xterm-256color")
+		modifiedTerm = true
+	}
+
+	if config.GetGlobalOption("xterm").(bool) {
+		setXterm()
 	}
 
 	// Initilize tcell
 	var err error
 	Screen, err = tcell.NewScreen()
 	if err != nil {
-		if err == tcell.ErrTermNotFound {
-			err = terminfo.WriteDB(config.ConfigDir + "/.tcelldb")
-			if err != nil {
-				fmt.Println(err)
-				fmt.Println("Fatal: Micro could not create terminal database file", config.ConfigDir+"/.tcelldb")
-				os.Exit(1)
-			}
-			Screen, err = tcell.NewScreen()
-			if err != nil {
-				fmt.Println(err)
-				fmt.Println("Fatal: Micro could not initialize a Screen.")
-				os.Exit(1)
-			}
-		} else {
-			fmt.Println(err)
-			fmt.Println("Fatal: Micro could not initialize a Screen.")
-			os.Exit(1)
+		log.Println("Warning: during screen initialization:", err)
+		log.Println("Falling back to TERM=xterm-256color")
+		setXterm()
+		Screen, err = tcell.NewScreen()
+		if err != nil {
+			return err
 		}
 	}
 	if err = Screen.Init(); err != nil {
-		fmt.Println(err)
-		os.Exit(1)
+		return err
 	}
 
-	// Now we can put the TERM back to what it was before
-	if truecolor {
+	Screen.SetPaste(config.GetGlobalOption("paste").(bool))
+
+	// restore TERM
+	if modifiedTerm {
 		os.Setenv("TERM", oldTerm)
 	}
 
@@ -106,5 +187,29 @@ func Init() {
 		Screen.EnableMouse()
 	}
 
-	os.Setenv("TCELLDB", tcelldb)
+	return nil
+}
+
+// InitSimScreen initializes a simulation screen for testing purposes
+func InitSimScreen() (tcell.SimulationScreen, error) {
+	drawChan = make(chan bool, 8)
+
+	// Initilize tcell
+	var err error
+	s := tcell.NewSimulationScreen("")
+	if s == nil {
+		return nil, errors.New("Failed to get a simulation screen")
+	}
+	if err = s.Init(); err != nil {
+		return nil, err
+	}
+
+	s.SetSize(80, 24)
+	Screen = s
+
+	if config.GetGlobalOption("mouse").(bool) {
+		Screen.EnableMouse()
+	}
+
+	return s, nil
 }

internal/shell/job.go

@@ -4,14 +4,6 @@ import (
 	"bytes"
 	"io"
 	"os/exec"
-	"strings"
-
-	luar "layeh.com/gopher-luar"
-
-	lua "github.com/yuin/gopher-lua"
-	"github.com/zyedidia/micro/internal/config"
-	ulua "github.com/zyedidia/micro/internal/lua"
-	"github.com/zyedidia/micro/internal/screen"
 )
 
 var Jobs chan JobFunction
@@ -32,7 +24,7 @@ func init() {
 // JobFunction is a representation of a job (this data structure is what is loaded
 // into the jobs channel)
 type JobFunction struct {
-	Function func(string, ...interface{})
+	Function func(string, []interface{})
 	Output   string
 	Args     []interface{}
 }
@@ -41,10 +33,16 @@ type JobFunction struct {
 type CallbackFile struct {
 	io.Writer
 
-	callback func(string, ...interface{})
+	callback func(string, []interface{})
 	args     []interface{}
 }
 
+// Job stores the executing command for the job, and the stdin pipe
+type Job struct {
+	*exec.Cmd
+	Stdin io.WriteCloser
+}
+
 func (f *CallbackFile) Write(data []byte) (int, error) {
 	// This is either stderr or stdout
 	// In either case we create a new job function callback and put it in the jobs channel
@@ -55,70 +53,44 @@ func (f *CallbackFile) Write(data []byte) (int, error) {
 
 // JobStart starts a shell command in the background with the given callbacks
 // It returns an *exec.Cmd as the job id
-func JobStart(cmd string, onStdout, onStderr, onExit string, userargs ...interface{}) *exec.Cmd {
+func JobStart(cmd string, onStdout, onStderr, onExit func(string, []interface{}), userargs ...interface{}) *Job {
 	return JobSpawn("sh", []string{"-c", cmd}, onStdout, onStderr, onExit, userargs...)
 }
 
 // JobSpawn starts a process with args in the background with the given callbacks
 // It returns an *exec.Cmd as the job id
-func JobSpawn(cmdName string, cmdArgs []string, onStdout, onStderr, onExit string, userargs ...interface{}) *exec.Cmd {
+func JobSpawn(cmdName string, cmdArgs []string, onStdout, onStderr, onExit func(string, []interface{}), userargs ...interface{}) *Job {
 	// Set up everything correctly if the functions have been provided
 	proc := exec.Command(cmdName, cmdArgs...)
 	var outbuf bytes.Buffer
-	if onStdout != "" {
-		proc.Stdout = &CallbackFile{&outbuf, luaFunctionJob(onStdout), userargs}
+	if onStdout != nil {
+		proc.Stdout = &CallbackFile{&outbuf, onStdout, userargs}
 	} else {
 		proc.Stdout = &outbuf
 	}
-	if onStderr != "" {
-		proc.Stderr = &CallbackFile{&outbuf, luaFunctionJob(onStderr), userargs}
+	if onStderr != nil {
+		proc.Stderr = &CallbackFile{&outbuf, onStderr, userargs}
 	} else {
 		proc.Stderr = &outbuf
 	}
+	stdin, _ := proc.StdinPipe()
 
 	go func() {
 		// Run the process in the background and create the onExit callback
 		proc.Run()
-		jobFunc := JobFunction{luaFunctionJob(onExit), string(outbuf.Bytes()), userargs}
+		jobFunc := JobFunction{onExit, outbuf.String(), userargs}
 		Jobs <- jobFunc
 	}()
 
-	return proc
+	return &Job{proc, stdin}
 }
 
 // JobStop kills a job
-func JobStop(cmd *exec.Cmd) {
-	cmd.Process.Kill()
+func JobStop(j *Job) {
+	j.Process.Kill()
 }
 
 // JobSend sends the given data into the job's stdin stream
-func JobSend(cmd *exec.Cmd, data string) {
-	stdin, err := cmd.StdinPipe()
-	if err != nil {
-		return
-	}
-
-	stdin.Write([]byte(data))
-}
-
-// luaFunctionJob returns a function that will call the given lua function
-// structured as a job call i.e. the job output and arguments are provided
-// to the lua function
-func luaFunctionJob(fn string) func(string, ...interface{}) {
-	luaFn := strings.Split(fn, ".")
-	if len(luaFn) <= 1 {
-		return nil
-	}
-	plName, plFn := luaFn[0], luaFn[1]
-	pl := config.FindPlugin(plName)
-	if pl == nil {
-		return nil
-	}
-	return func(output string, args ...interface{}) {
-		luaArgs := []lua.LValue{luar.New(ulua.L, output), luar.New(ulua.L, args)}
-		_, err := pl.Call(plFn, luaArgs...)
-		if err != nil && err != config.ErrNoSuchFunction {
-			screen.TermMessage(err)
-		}
-	}
+func JobSend(j *Job, data string) {
+	j.Stdin.Write([]byte(data))
 }

internal/shell/shell.go

@@ -2,15 +2,15 @@ package shell
 
 import (
 	"bytes"
+	"errors"
 	"fmt"
 	"io"
 	"os"
 	"os/exec"
 	"os/signal"
-	"strings"
 
-	"github.com/zyedidia/micro/internal/screen"
-	"github.com/zyedidia/micro/pkg/shellwords"
+	shellquote "github.com/kballard/go-shellquote"
+	"github.com/zyedidia/micro/v2/internal/screen"
 )
 
 // ExecCommand executes a command using exec
@@ -32,10 +32,13 @@ func ExecCommand(name string, arg ...string) (string, error) {
 
 // RunCommand executes a shell command and returns the output/error
 func RunCommand(input string) (string, error) {
-	args, err := shellwords.Split(input)
+	args, err := shellquote.Split(input)
 	if err != nil {
 		return "", err
 	}
+	if len(args) == 0 {
+		return "", errors.New("No arguments")
+	}
 	inputCmd := args[0]
 
 	return ExecCommand(inputCmd, args[1:]...)
@@ -45,22 +48,20 @@ func RunCommand(input string) (string, error) {
 // It returns a function which will run the command and returns a string
 // message result
 func RunBackgroundShell(input string) (func() string, error) {
-	args, err := shellwords.Split(input)
+	args, err := shellquote.Split(input)
 	if err != nil {
 		return nil, err
 	}
+	if len(args) == 0 {
+		return nil, errors.New("No arguments")
+	}
 	inputCmd := args[0]
 	return func() string {
 		output, err := RunCommand(input)
-		totalLines := strings.Split(output, "\n")
 
 		str := output
-		if len(totalLines) < 3 {
-			if err == nil {
-				str = fmt.Sprint(inputCmd, " exited without error")
-			} else {
-				str = fmt.Sprint(inputCmd, " exited with error: ", err, ": ", output)
-			}
+		if err != nil {
+			str = fmt.Sprint(inputCmd, " exited with error: ", err, ": ", output)
 		}
 		return str
 	}, nil
@@ -68,10 +69,13 @@ func RunBackgroundShell(input string) (func() string, error) {
 
 // RunInteractiveShell runs a shellcommand interactively
 func RunInteractiveShell(input string, wait bool, getOutput bool) (string, error) {
-	args, err := shellwords.Split(input)
+	args, err := shellquote.Split(input)
 	if err != nil {
 		return "", err
 	}
+	if len(args) == 0 {
+		return "", errors.New("No arguments")
+	}
 	inputCmd := args[0]
 
 	// Shut down the screen because we're going to interact directly with the shell

internal/shell/terminal.go

@@ -2,19 +2,12 @@ package shell
 
 import (
 	"bytes"
-	"fmt"
-	"os"
 	"os/exec"
 	"strconv"
-	"strings"
 
-	lua "github.com/yuin/gopher-lua"
-	"github.com/zyedidia/micro/internal/buffer"
-	"github.com/zyedidia/micro/internal/config"
-	ulua "github.com/zyedidia/micro/internal/lua"
-	"github.com/zyedidia/micro/internal/screen"
+	"github.com/zyedidia/micro/v2/internal/buffer"
+	"github.com/zyedidia/micro/v2/internal/screen"
 	"github.com/zyedidia/terminal"
-	luar "layeh.com/gopher-luar"
 )
 
 type TermType int
@@ -76,7 +69,7 @@ func (t *Terminal) GetSelection(width int) string {
 }
 
 // Start begins a new command in this terminal with a given view
-func (t *Terminal) Start(execCmd []string, getOutput bool, wait bool, callback string, userargs []interface{}) error {
+func (t *Terminal) Start(execCmd []string, getOutput bool, wait bool, callback func(out string, userargs []interface{}), userargs []interface{}) error {
 	if len(execCmd) <= 0 {
 		return nil
 	}
@@ -86,7 +79,8 @@ func (t *Terminal) Start(execCmd []string, getOutput bool, wait bool, callback s
 	if getOutput {
 		t.output = bytes.NewBuffer([]byte{})
 	}
-	Term, _, err := terminal.Start(&t.State, cmd, t.output)
+	cmd.Stdout = t.output
+	Term, _, err := terminal.Start(&t.State, cmd)
 	if err != nil {
 		return err
 	}
@@ -95,27 +89,16 @@ func (t *Terminal) Start(execCmd []string, getOutput bool, wait bool, callback s
 	t.Status = TTRunning
 	t.title = execCmd[0] + ":" + strconv.Itoa(cmd.Process.Pid)
 	t.wait = wait
-
-	luaFn := strings.Split(callback, ".")
-	if len(luaFn) >= 2 {
-		plName, plFn := luaFn[0], luaFn[1]
-		pl := config.FindPlugin(plName)
-		if pl != nil {
-			t.callback = func(out string) {
-				luaArgs := []lua.LValue{luar.New(ulua.L, out), luar.New(ulua.L, userargs)}
-				_, err := pl.Call(plFn, luaArgs...)
-				if err != nil {
-					screen.TermMessage(err)
-				}
-			}
-		}
+	t.callback = func(out string) {
+		callback(out, userargs)
 	}
 
 	go func() {
 		for {
 			err := Term.Parse()
 			if err != nil {
-				fmt.Fprintln(os.Stderr, "[Press enter to close]")
+				Term.Write([]byte("Press enter to close"))
+				screen.Redraw()
 				break
 			}
 			screen.Redraw()
@@ -146,7 +129,13 @@ func (t *Terminal) Close() {
 	// call the lua function that the user has given as a callback
 	if t.getOutput {
 		if t.callback != nil {
-			t.callback(t.output.String())
+			Jobs <- JobFunction{
+				Function: func(out string, args []interface{}) {
+					t.callback(out)
+				},
+				Output: t.output.String(),
+				Args:   nil,
+			}
 		}
 	}
 }

internal/util/lua.go

@@ -1,13 +1,11 @@
 package util
 
-import (
-	"unicode/utf8"
-)
-
+// LuaRuneAt is a helper function for lua plugins to return the rune
+// at an index within a string
 func LuaRuneAt(str string, runeidx int) string {
 	i := 0
 	for len(str) > 0 {
-		r, size := utf8.DecodeRuneInString(str)
+		r, _, size := DecodeCharacterInString(str)
 
 		str = str[size:]
 
@@ -20,10 +18,11 @@ func LuaRuneAt(str string, runeidx int) string {
 	return ""
 }
 
+// LuaGetLeadingWhitespace returns the leading whitespace of a string (used by lua plugins)
 func LuaGetLeadingWhitespace(s string) string {
 	ws := []byte{}
 	for len(s) > 0 {
-		r, size := utf8.DecodeRuneInString(s)
+		r, _, size := DecodeCharacterInString(s)
 		if r == ' ' || r == '\t' {
 			ws = append(ws, byte(r))
 		} else {
@@ -35,7 +34,8 @@ func LuaGetLeadingWhitespace(s string) string {
 	return string(ws)
 }
 
+// LuaIsWordChar returns true if the first rune in a string is a word character
 func LuaIsWordChar(s string) bool {
-	r, _ := utf8.DecodeRuneInString(s)
+	r, _, _ := DecodeCharacterInString(s)
 	return IsWordChar(r)
 }

internal/util/unicode.go

@@ -0,0 +1,96 @@
+package util
+
+import (
+	"unicode"
+	"unicode/utf8"
+)
+
+// Unicode is annoying. A "code point" (rune in Go-speak) may need up to
+// 4 bytes to represent it. In general, a code point will represent a
+// complete character, but this is not always the case. A character with
+// accents may be made up of multiple code points (the code point for the
+// original character, and additional code points for each accent/marking).
+// The functions below are meant to help deal with these additional "combining"
+// code points. In underlying operations (search, replace, etc...), micro will
+// treat a character with combining code points as just the original code point.
+// For rendering, micro will display the combining characters. It's not perfect
+// but it's pretty good.
+
+var minMark = rune(unicode.Mark.R16[0].Lo)
+
+func isMark(r rune) bool {
+	// Fast path
+	if r < minMark {
+		return false
+	}
+	return unicode.In(r, unicode.Mark)
+}
+
+// DecodeCharacter returns the next character from an array of bytes
+// A character is a rune along with any accompanying combining runes
+func DecodeCharacter(b []byte) (rune, []rune, int) {
+	r, size := utf8.DecodeRune(b)
+	b = b[size:]
+	c, s := utf8.DecodeRune(b)
+
+	var combc []rune
+	for isMark(c) {
+		combc = append(combc, c)
+		size += s
+
+		b = b[s:]
+		c, s = utf8.DecodeRune(b)
+	}
+
+	return r, combc, size
+}
+
+// DecodeCharacterInString returns the next character from a string
+// A character is a rune along with any accompanying combining runes
+func DecodeCharacterInString(str string) (rune, []rune, int) {
+	r, size := utf8.DecodeRuneInString(str)
+	str = str[size:]
+	c, s := utf8.DecodeRuneInString(str)
+
+	var combc []rune
+	for isMark(c) {
+		combc = append(combc, c)
+		size += s
+
+		str = str[s:]
+		c, s = utf8.DecodeRuneInString(str)
+	}
+
+	return r, combc, size
+}
+
+// CharacterCount returns the number of characters in a byte array
+// Similar to utf8.RuneCount but for unicode characters
+func CharacterCount(b []byte) int {
+	s := 0
+
+	for len(b) > 0 {
+		r, size := utf8.DecodeRune(b)
+		if !isMark(r) {
+			s++
+		}
+
+		b = b[size:]
+	}
+
+	return s
+}
+
+// CharacterCount returns the number of characters in a string
+// Similar to utf8.RuneCountInString but for unicode characters
+func CharacterCountInString(str string) int {
+	s := 0
+
+	for _, r := range str {
+		if !isMark(r) {
+			s++
+		}
+	}
+
+	return s
+}

internal/util/util.go

@@ -1,17 +1,21 @@
 package util
 
 import (
+	"archive/zip"
+	"bytes"
 	"errors"
 	"fmt"
+	"io"
+	"net/http"
 	"os"
 	"os/user"
 	"path/filepath"
 	"regexp"
+	"runtime"
 	"strconv"
 	"strings"
 	"time"
 	"unicode"
-	"unicode/utf8"
 
 	"github.com/blang/semver"
 	runewidth "github.com/mattn/go-runewidth"
@@ -22,14 +26,20 @@ var (
 
 	// Version is the version number or commit hash
 	Version = "0.0.0-unknown"
-	// Semantic version
+	// SemVersion is the Semantic version
 	SemVersion semver.Version
 	// CommitHash is the commit this version was built on
 	CommitHash = "Unknown"
 	// CompileDate is the date this binary was compiled on
 	CompileDate = "Unknown"
 	// Debug logging
-	Debug = "ON"
+	Debug = "OFF"
+	// FakeCursor is used to disable the terminal cursor and have micro
+	// draw its own (enabled for windows consoles where the cursor is slow)
+	FakeCursor = false
+
+	// Stdout is a buffer that is written to stdout when micro closes
+	Stdout *bytes.Buffer
 )
 
 func init() {
@@ -38,6 +48,12 @@ func init() {
 	if err != nil {
 		fmt.Println("Invalid version: ", Version, err)
 	}
+
+	_, wt := os.LookupEnv("WT_SESSION")
+	if runtime.GOOS == "windows" && !wt {
+		FakeCursor = true
+	}
+	Stdout = new(bytes.Buffer)
 }
 
 // SliceEnd returns a byte slice where the index is a rune index
@@ -51,7 +67,7 @@ func SliceEnd(slc []byte, index int) []byte {
 			return slc[totalSize:]
 		}
 
-		_, size := utf8.DecodeRune(slc[totalSize:])
+		_, _, size := DecodeCharacter(slc[totalSize:])
 		totalSize += size
 		i++
 	}
@@ -69,7 +85,7 @@ func SliceEndStr(str string, index int) string {
 			return str[totalSize:]
 		}
 
-		_, size := utf8.DecodeRuneInString(str[totalSize:])
+		_, _, size := DecodeCharacterInString(str[totalSize:])
 		totalSize += size
 		i++
 	}
@@ -88,7 +104,7 @@ func SliceStart(slc []byte, index int) []byte {
 			return slc[:totalSize]
 		}
 
-		_, size := utf8.DecodeRune(slc[totalSize:])
+		_, _, size := DecodeCharacter(slc[totalSize:])
 		totalSize += size
 		i++
 	}
@@ -106,7 +122,7 @@ func SliceStartStr(str string, index int) string {
 			return str[:totalSize]
 		}
 
-		_, size := utf8.DecodeRuneInString(str[totalSize:])
+		_, _, size := DecodeCharacterInString(str[totalSize:])
 		totalSize += size
 		i++
 	}
@@ -122,7 +138,7 @@ func SliceVisualEnd(b []byte, n, tabsize int) ([]byte, int, int) {
 	width := 0
 	i := 0
 	for len(b) > 0 {
-		r, size := utf8.DecodeRune(b)
+		r, _, size := DecodeCharacter(b)
 
 		w := 0
 		switch r {
@@ -159,7 +175,7 @@ func StringWidth(b []byte, n, tabsize int) int {
 	i := 0
 	width := 0
 	for len(b) > 0 {
-		r, size := utf8.DecodeRune(b)
+		r, _, size := DecodeCharacter(b)
 		b = b[size:]
 
 		switch r {
@@ -252,7 +268,7 @@ func IsBytesWhitespace(b []byte) bool {
 // RunePos returns the rune index of a given byte index
 // Make sure the byte index is not between code points
 func RunePos(b []byte, i int) int {
-	return utf8.RuneCount(b[:i])
+	return CharacterCount(b[:i])
 }
 
 // MakeRelative will attempt to make a relative path between path and base
@@ -267,7 +283,6 @@ func MakeRelative(path, base string) (string, error) {
 	return path, nil
 }
 
-// TODO: consider changing because of snap segfault
 // ReplaceHome takes a path as input and replaces ~ at the start of the path with the user's
 // home directory. Does nothing if the path does not start with '~'.
 func ReplaceHome(path string) (string, error) {
@@ -325,14 +340,18 @@ func GetModTime(path string) (time.Time, error) {
 // EscapePath replaces every path separator in a given path with a %
 func EscapePath(path string) string {
 	path = filepath.ToSlash(path)
-	return strings.Replace(path, "/", "%", -1)
+	if runtime.GOOS == "windows" {
+		// ':' is not valid in a path name on Windows but is ok on Unix
+		path = strings.ReplaceAll(path, ":", "%")
+	}
+	return strings.ReplaceAll(path, "/", "%")
 }
 
 // GetLeadingWhitespace returns the leading whitespace of the given byte array
 func GetLeadingWhitespace(b []byte) []byte {
 	ws := []byte{}
 	for len(b) > 0 {
-		r, size := utf8.DecodeRune(b)
+		r, _, size := DecodeCharacter(b)
 		if r == ' ' || r == '\t' {
 			ws = append(ws, byte(r))
 		} else {
@@ -358,7 +377,7 @@ func GetCharPosInLine(b []byte, visualPos int, tabsize int) int {
 	i := 0     // char pos
 	width := 0 // string visual width
 	for len(b) > 0 {
-		r, size := utf8.DecodeRune(b)
+		r, _, size := DecodeCharacter(b)
 		b = b[size:]
 
 		switch r {
@@ -403,10 +422,88 @@ func Clamp(val, min, max int) int {
 	return val
 }
 
+// IsNonAlphaNumeric returns if the rune is not a number of letter or underscore.
 func IsNonAlphaNumeric(c rune) bool {
-	return !unicode.IsLetter(c) && !unicode.IsNumber(c)
+	return !unicode.IsLetter(c) && !unicode.IsNumber(c) && c != '_'
 }
 
-func ParseSpecial(s string) string {
-	return strings.Replace(s, "\\t", "\t", -1)
+// IsAutocomplete returns whether a character should begin an autocompletion.
+func IsAutocomplete(c rune) bool {
+	return c == '.' || !IsNonAlphaNumeric(c)
+}
+
+// ParseSpecial replaces escaped ts with '\t'.
+func ParseSpecial(s string) string {
+	return strings.ReplaceAll(s, "\\t", "\t")
+}
+
+// String converts a byte array to a string (for lua plugins)
+func String(s []byte) string {
+	return string(s)
+}
+
+// Unzip unzips a file to given folder
+func Unzip(src, dest string) error {
+	r, err := zip.OpenReader(src)
+	if err != nil {
+		return err
+	}
+	defer r.Close()
+
+	os.MkdirAll(dest, 0755)
+
+	// Closure to address file descriptors issue with all the deferred .Close() methods
+	extractAndWriteFile := func(f *zip.File) error {
+		rc, err := f.Open()
+		if err != nil {
+			return err
+		}
+		defer rc.Close()
+
+		path := filepath.Join(dest, f.Name)
+
+		// Check for ZipSlip (Directory traversal)
+		if !strings.HasPrefix(path, filepath.Clean(dest)+string(os.PathSeparator)) {
+			return fmt.Errorf("illegal file path: %s", path)
+		}
+
+		if f.FileInfo().IsDir() {
+			os.MkdirAll(path, f.Mode())
+		} else {
+			os.MkdirAll(filepath.Dir(path), f.Mode())
+			f, err := os.OpenFile(path, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, f.Mode())
+			if err != nil {
+				return err
+			}
+			defer f.Close()
+
+			_, err = io.Copy(f, rc)
+			if err != nil {
+				return err
+			}
+		}
+		return nil
+	}
+
+	for _, f := range r.File {
+		err := extractAndWriteFile(f)
+		if err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+// HttpRequest returns a new http.Client for making custom requests (for lua plugins)
+func HttpRequest(method string, url string, headers []string) (resp *http.Response, err error) {
+	client := http.Client{}
+	req, err := http.NewRequest(method, url, nil)
+	if err != nil {
+		return nil, err
+	}
+	for i := 0; i < len(headers); i += 2 {
+		req.Header.Add(headers[i], headers[i+1])
+	}
+	return client.Do(req)
 }

internal/views/splits.go

@@ -456,9 +456,9 @@ func (n *Node) unsplit(i int, h bool) {
 
 // Unsplit deletes this split and resizes everything
 // else accordingly
-func (n *Node) Unsplit() {
-	if !n.IsLeaf() {
-		return
+func (n *Node) Unsplit() bool {
+	if !n.IsLeaf() || n.parent == nil {
+		return false
 	}
 	ind := 0
 	for i, c := range n.parent.children {
@@ -473,8 +473,9 @@ func (n *Node) Unsplit() {
 	}
 
 	if n.parent.IsLeaf() {
-		n.parent.Unsplit()
+		return n.parent.Unsplit()
 	}
+	return true
 }
 
 // String returns the string form of the node and all children (used for debugging)

pkg/highlight/highlighter.go

@@ -3,7 +3,6 @@ package highlight
 import (
 	"regexp"
 	"strings"
-	"unicode/utf8"
 )
 
 func sliceStart(slc []byte, index int) []byte {
@@ -15,7 +14,7 @@ func sliceStart(slc []byte, index int) []byte {
 			return slc[totalSize:]
 		}
 
-		_, size := utf8.DecodeRune(slc[totalSize:])
+		_, _, size := DecodeCharacter(slc[totalSize:])
 		totalSize += size
 		i++
 	}
@@ -32,7 +31,7 @@ func sliceEnd(slc []byte, index int) []byte {
 			return slc[:totalSize]
 		}
 
-		_, size := utf8.DecodeRune(slc[totalSize:])
+		_, _, size := DecodeCharacter(slc[totalSize:])
 		totalSize += size
 		i++
 	}
@@ -47,9 +46,9 @@ func runePos(p int, str []byte) int {
 		return 0
 	}
 	if p >= len(str) {
-		return utf8.RuneCount(str)
+		return CharacterCount(str)
 	}
-	return utf8.RuneCount(str[:p])
+	return CharacterCount(str[:p])
 }
 
 func combineLineMatch(src, dst LineMatch) LineMatch {
@@ -68,6 +67,9 @@ func combineLineMatch(src, dst LineMatch) LineMatch {
 // A State represents the region at the end of a line
 type State *region
 
+// EmptyDef is an empty definition.
+var EmptyDef = Def{nil, &rules{}}
+
 // LineStates is an interface for a buffer-like object which can also store the states and matches for every line
 type LineStates interface {
 	LineBytes(n int) []byte
@@ -94,23 +96,11 @@ func NewHighlighter(def *Def) *Highlighter {
 // color's group (represented as one byte)
 type LineMatch map[int]Group
 
-func findIndex(regex *regexp.Regexp, skip *regexp.Regexp, str []byte, canMatchStart, canMatchEnd bool) []int {
-	regexStr := regex.String()
-	if strings.Contains(regexStr, "^") {
-		if !canMatchStart {
-			return nil
-		}
-	}
-	if strings.Contains(regexStr, "$") {
-		if !canMatchEnd {
-			return nil
-		}
-	}
-
+func findIndex(regex *regexp.Regexp, skip *regexp.Regexp, str []byte) []int {
 	var strbytes []byte
 	if skip != nil {
 		strbytes = skip.ReplaceAllFunc(str, func(match []byte) []byte {
-			res := make([]byte, utf8.RuneCount(match))
+			res := make([]byte, CharacterCount(match))
 			return res
 		})
 	} else {
@@ -125,18 +115,7 @@ func findIndex(regex *regexp.Regexp, skip *regexp.Regexp, str []byte, canMatchSt
 	return []int{runePos(match[0], str), runePos(match[1], str)}
 }
 
-func findAllIndex(regex *regexp.Regexp, str []byte, canMatchStart, canMatchEnd bool) [][]int {
-	regexStr := regex.String()
-	if strings.Contains(regexStr, "^") {
-		if !canMatchStart {
-			return nil
-		}
-	}
-	if strings.Contains(regexStr, "$") {
-		if !canMatchEnd {
-			return nil
-		}
-	}
+func findAllIndex(regex *regexp.Regexp, str []byte) [][]int {
 	matches := regex.FindAllIndex(str, -1)
 	for i, m := range matches {
 		matches[i][0] = runePos(m[0], str)
@@ -146,7 +125,7 @@ func findAllIndex(regex *regexp.Regexp, str []byte, canMatchStart, canMatchEnd b
 }
 
 func (h *Highlighter) highlightRegion(highlights LineMatch, start int, canMatchEnd bool, lineNum int, line []byte, curRegion *region, statesOnly bool) LineMatch {
-	lineLen := utf8.RuneCount(line)
+	lineLen := CharacterCount(line)
 	if start == 0 {
 		if !statesOnly {
 			if _, ok := highlights[0]; !ok {
@@ -155,7 +134,65 @@ func (h *Highlighter) highlightRegion(highlights LineMatch, start int, canMatchE
 		}
 	}
 
-	loc := findIndex(curRegion.end, curRegion.skip, line, start == 0, canMatchEnd)
+	var firstRegion *region
+	firstLoc := []int{lineLen, 0}
+	searchNesting := true
+	endLoc := findIndex(curRegion.end, curRegion.skip, line)
+	if endLoc != nil {
+		if start == endLoc[0] {
+			searchNesting = false
+		} else {
+			firstLoc = endLoc
+		}
+	}
+	if searchNesting {
+		for _, r := range curRegion.rules.regions {
+			loc := findIndex(r.start, r.skip, line)
+			if loc != nil {
+				if loc[0] < firstLoc[0] {
+					firstLoc = loc
+					firstRegion = r
+				}
+			}
+		}
+	}
+	if firstRegion != nil && firstLoc[0] != lineLen {
+		if !statesOnly {
+			highlights[start+firstLoc[0]] = firstRegion.limitGroup
+		}
+		h.highlightEmptyRegion(highlights, start+firstLoc[1], canMatchEnd, lineNum, sliceStart(line, firstLoc[1]), statesOnly)
+		h.highlightRegion(highlights, start+firstLoc[1], canMatchEnd, lineNum, sliceStart(line, firstLoc[1]), firstRegion, statesOnly)
+		return highlights
+	}
+
+	if !statesOnly {
+		fullHighlights := make([]Group, lineLen)
+		for i := 0; i < len(fullHighlights); i++ {
+			fullHighlights[i] = curRegion.group
+		}
+
+		if searchNesting {
+			for _, p := range curRegion.rules.patterns {
+				if curRegion.group == curRegion.limitGroup || p.group == curRegion.limitGroup {
+					matches := findAllIndex(p.regex, line)
+					for _, m := range matches {
+						if ((endLoc == nil) || (m[0] < endLoc[0])) {
+							for i := m[0]; i < m[1]; i++ {
+								fullHighlights[i] = p.group
+							}
+						}
+					}
+				}
+			}
+		}
+		for i, h := range fullHighlights {
+			if i == 0 || h != fullHighlights[i-1] {
+				highlights[start+i] = h
+			}
+		}
+	}
+
+	loc := endLoc
 	if loc != nil {
 		if !statesOnly {
 			highlights[start+loc[0]] = curRegion.limitGroup
@@ -163,65 +200,17 @@ func (h *Highlighter) highlightRegion(highlights LineMatch, start int, canMatchE
 		if curRegion.parent == nil {
 			if !statesOnly {
 				highlights[start+loc[1]] = 0
-				h.highlightRegion(highlights, start, false, lineNum, sliceEnd(line, loc[0]), curRegion, statesOnly)
 			}
 			h.highlightEmptyRegion(highlights, start+loc[1], canMatchEnd, lineNum, sliceStart(line, loc[1]), statesOnly)
 			return highlights
 		}
 		if !statesOnly {
 			highlights[start+loc[1]] = curRegion.parent.group
-			h.highlightRegion(highlights, start, false, lineNum, sliceEnd(line, loc[0]), curRegion, statesOnly)
 		}
 		h.highlightRegion(highlights, start+loc[1], canMatchEnd, lineNum, sliceStart(line, loc[1]), curRegion.parent, statesOnly)
 		return highlights
 	}
 
-	if lineLen == 0 || statesOnly {
-		if canMatchEnd {
-			h.lastRegion = curRegion
-		}
-
-		return highlights
-	}
-
-	firstLoc := []int{lineLen, 0}
-
-	var firstRegion *region
-	for _, r := range curRegion.rules.regions {
-		loc := findIndex(r.start, nil, line, start == 0, canMatchEnd)
-		if loc != nil {
-			if loc[0] < firstLoc[0] {
-				firstLoc = loc
-				firstRegion = r
-			}
-		}
-	}
-	if firstLoc[0] != lineLen {
-		highlights[start+firstLoc[0]] = firstRegion.limitGroup
-		h.highlightRegion(highlights, start, false, lineNum, sliceEnd(line, firstLoc[0]), curRegion, statesOnly)
-		h.highlightRegion(highlights, start+firstLoc[1], canMatchEnd, lineNum, sliceStart(line, firstLoc[1]), firstRegion, statesOnly)
-		return highlights
-	}
-
-	fullHighlights := make([]Group, lineLen)
-	for i := 0; i < len(fullHighlights); i++ {
-		fullHighlights[i] = curRegion.group
-	}
-
-	for _, p := range curRegion.rules.patterns {
-		matches := findAllIndex(p.regex, line, start == 0, canMatchEnd)
-		for _, m := range matches {
-			for i := m[0]; i < m[1]; i++ {
-				fullHighlights[i] = p.group
-			}
-		}
-	}
-	for i, h := range fullHighlights {
-		if i == 0 || h != fullHighlights[i-1] {
-			highlights[start+i] = h
-		}
-	}
-
 	if canMatchEnd {
 		h.lastRegion = curRegion
 	}
@@ -230,7 +219,7 @@ func (h *Highlighter) highlightRegion(highlights LineMatch, start int, canMatchE
 }
 
 func (h *Highlighter) highlightEmptyRegion(highlights LineMatch, start int, canMatchEnd bool, lineNum int, line []byte, statesOnly bool) LineMatch {
-	lineLen := utf8.RuneCount(line)
+	lineLen := CharacterCount(line)
 	if lineLen == 0 {
 		if canMatchEnd {
 			h.lastRegion = nil
@@ -238,10 +227,10 @@ func (h *Highlighter) highlightEmptyRegion(highlights LineMatch, start int, canM
 		return highlights
 	}
 
-	firstLoc := []int{lineLen, 0}
 	var firstRegion *region
+	firstLoc := []int{lineLen, 0}
 	for _, r := range h.Def.rules.regions {
-		loc := findIndex(r.start, nil, line, start == 0, canMatchEnd)
+		loc := findIndex(r.start, r.skip, line)
 		if loc != nil {
 			if loc[0] < firstLoc[0] {
 				firstLoc = loc
@@ -249,7 +238,7 @@ func (h *Highlighter) highlightEmptyRegion(highlights LineMatch, start int, canM
 			}
 		}
 	}
-	if firstLoc[0] != lineLen {
+	if firstRegion != nil && firstLoc[0] != lineLen {
 		if !statesOnly {
 			highlights[start+firstLoc[0]] = firstRegion.limitGroup
 		}
@@ -268,7 +257,7 @@ func (h *Highlighter) highlightEmptyRegion(highlights LineMatch, start int, canM
 
 	fullHighlights := make([]Group, len(line))
 	for _, p := range h.Def.rules.patterns {
-		matches := findAllIndex(p.regex, line, start == 0, canMatchEnd)
+		matches := findAllIndex(p.regex, line)
 		for _, m := range matches {
 			for i := m[0]; i < m[1]; i++ {
 				fullHighlights[i] = p.group
@@ -330,11 +319,11 @@ func (h *Highlighter) HighlightStates(input LineStates) {
 	}
 }
 
-// HighlightMatches sets the matches for each line in between startline and endline
+// HighlightMatches sets the matches for each line from startline to endline
 // It sets all other matches in the buffer to nil to conserve memory
 // This assumes that all the states are set correctly
 func (h *Highlighter) HighlightMatches(input LineStates, startline, endline int) {
-	for i := startline; i < endline; i++ {
+	for i := startline; i <= endline; i++ {
 		if i >= input.LinesNum() {
 			break
 		}
@@ -354,8 +343,9 @@ func (h *Highlighter) HighlightMatches(input LineStates, startline, endline int)
 }
 
 // ReHighlightStates will scan down from `startline` and set the appropriate end of line state
-// for each line until it comes across the same state in two consecutive lines
-func (h *Highlighter) ReHighlightStates(input LineStates, startline int) {
+// for each line until it comes across a line whose state does not change
+// returns the number of the final line
+func (h *Highlighter) ReHighlightStates(input LineStates, startline int) int {
 	// lines := input.LineData()
 
 	h.lastRegion = nil
@@ -378,9 +368,11 @@ func (h *Highlighter) ReHighlightStates(input LineStates, startline int) {
 		input.SetState(i, curState)
 
 		if curState == lastState {
-			break
+			return i
 		}
 	}
+
+	return input.LinesNum() - 1
 }
 
 // ReHighlightLine will rehighlight the state and match for a single line

pkg/highlight/unicode.go

@@ -0,0 +1,85 @@
+package highlight
+
+import (
+	"unicode"
+	"unicode/utf8"
+)
+
+var minMark = rune(unicode.Mark.R16[0].Lo)
+
+func isMark(r rune) bool {
+	// Fast path
+	if r < minMark {
+		return false
+	}
+	return unicode.In(r, unicode.Mark)
+}
+
+// DecodeCharacter returns the next character from an array of bytes
+// A character is a rune along with any accompanying combining runes
+func DecodeCharacter(b []byte) (rune, []rune, int) {
+	r, size := utf8.DecodeRune(b)
+	b = b[size:]
+	c, s := utf8.DecodeRune(b)
+
+	var combc []rune
+	for isMark(c) {
+		combc = append(combc, c)
+		size += s
+
+		b = b[s:]
+		c, s = utf8.DecodeRune(b)
+	}
+
+	return r, combc, size
+}
+
+// DecodeCharacterInString returns the next character from a string
+// A character is a rune along with any accompanying combining runes
+func DecodeCharacterInString(str string) (rune, []rune, int) {
+	r, size := utf8.DecodeRuneInString(str)
+	str = str[size:]
+	c, s := utf8.DecodeRuneInString(str)
+
+	var combc []rune
+	for isMark(c) {
+		combc = append(combc, c)
+		size += s
+
+		str = str[s:]
+		c, s = utf8.DecodeRuneInString(str)
+	}
+
+	return r, combc, size
+}
+
+// CharacterCount returns the number of characters in a byte array
+// Similar to utf8.RuneCount but for unicode characters
+func CharacterCount(b []byte) int {
+	s := 0
+
+	for len(b) > 0 {
+		r, size := utf8.DecodeRune(b)
+		if !isMark(r) {
+			s++
+		}
+
+		b = b[size:]
+	}
+
+	return s
+}
+
+// CharacterCount returns the number of characters in a string
+// Similar to utf8.RuneCountInString but for unicode characters
+func CharacterCountInString(str string) int {
+	s := 0
+
+	for _, r := range str {
+		if !isMark(r) {
+			s++
+		}
+	}
+
+	return s
+}