Disable fake cursor for Windows Terminal

Ref #1900

.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:

.gitignore

@@ -11,8 +11,10 @@ todo.txt
 test.txt
 log.txt
 *.old
+benchmark_results*
 tools/build-version
 tools/build-date
 tools/info-plist
 tools/bindata
+tools/vscode-tests/
 *.hdr

.travis.yml

@@ -1,9 +1,11 @@
 language: go
 go:
-    - "1.11.x"
+    - "1.13.x"
 os:
     - linux
     - osx
+    - windows
 script:
-    - env GO111MODULE=on make build
-    - env GO111MODULE=on make test
+    - go build ./cmd/micro
+    - go test ./internal/...
+    - go test ./cmd/...

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

Makefile

@@ -6,23 +6,29 @@ 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 "$(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 -ldflags "-s -w $(GOVARS) $(ADDITIONAL_GO_LINKER_FLAGS)" ./cmd/micro
+	go build -trimpath -ldflags "-s -w $(GOVARS) $(ADDITIONAL_GO_LINKER_FLAGS)" ./cmd/micro
 
 build-dbg:
-	go build -ldflags "-s -w $(ADDITIONAL_GO_LINKER_FLAGS)" ./cmd/micro
+	go build -trimpath -ldflags "-s -w $(ADDITIONAL_GO_LINKER_FLAGS) $(DEBUGVAR)" ./cmd/micro
+
+build-tags: fetch-tags
+	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
 
 # Builds micro without checking for dependencies
 build-quick:
-	go build -ldflags "-s -w $(GOVARS) $(ADDITIONAL_GO_LINKER_FLAGS)" ./cmd/micro
+	go build -trimpath -ldflags "-s -w $(GOVARS) $(ADDITIONAL_GO_LINKER_FLAGS)" ./cmd/micro
 
 # Same as 'build' but installs to $GOBIN afterward
 install:
@@ -35,17 +41,48 @@ install-all: runtime install
 install-quick:
 	go install -ldflags "-s -w $(GOVARS) $(ADDITIONAL_GO_LINKER_FLAGS)"  ./cmd/micro
 
+fetch-tags:
+	git fetch --tags
+
 # Builds the runtime
 runtime:
 	git submodule update --init
+	rm -f runtime/syntax/*.hdr
 	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

@@ -1,97 +1,105 @@
-# ![Micro](./assets/logo.png)
+<img alt="micro logo" src="./assets/micro-logo.svg" width="500px"/>
 
 [![Build Status](https://travis-ci.org/zyedidia/micro.svg?branch=master)](https://travis-ci.org/zyedidia/micro)
 [![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)
+[![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://build.snapcraft.io/badge/zyedidia/micro.svg)](https://build.snapcraft.io/user/zyedidia/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](http://zbyedidia.webfactional.com/micro/screenshots.html).
  
 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)
   - [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, Mingw](#plan9-cygwin-mingw)
+  - [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 Mingw/Cygwin is not (see below)
-* Plugin system (plugins are written in Lua)
-* Persistent undo
-* Automatic linting and error notifications
-* Syntax highlighting (for over [120 languages](runtime/syntax)!)
-* Colorscheme 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 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, …
 
-# 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).
 
+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.
+
+A desktop entry file and man page can be found in the [assets/packaging](https://github.com/zyedidia/micro/tree/master/assets/packaging) directory.
+
 ### Prebuilt binaries
 
 All you need to install micro is one file, the binary itself. It's as simple as that!
 
 Download the binary from the [releases](https://github.com/zyedidia/micro/releases) page.
 
-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.
-
-If you'd like to see more information after installing micro, run `micro -version`.
-
 ### Installation 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)).
+There is a script which can install micro for you by downloading the latest prebuilt binary. You can find it at <https://getmic.ro>.
 
-Then you can easily install micro:
+You can easily install micro by running
 
-    $ curl https://getmic.ro | bash
+```bash
+curl https://getmic.ro | bash
+```
 
-The script will install the micro binary to the current directory.
+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.
 
-See the [Github page](https://github.com/benweissmann/getmic.ro) for more information.
+To uninstall micro, simply remove the binary, and the configuration directory at `~/.config/micro`.
 
 ### Package managers
 
@@ -101,22 +109,36 @@ You can install micro using Homebrew on Mac:
 brew install micro
 ```
 
-On Debian Linux, you can install micro through [snap](https://snapcraft.io/docs/core/install)
+**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)
 
 ```
 snap install micro --classic
 ```
 
-Homebrew and snap are the two "officially" maintained package manager distributions of micro.
+**Note for Linux:** for interfacing with the local system clipboard, `xclip` or `xsel`
+must be installed. Please see the section on [Linux clipboard support](https://github.com/zyedidia/micro#linux-clipboard-support)
+further below.
 
-Micro is also available through other package managers on Linux such as AUR, Nix, and package managers
-for other operating systems:
+Micro is also available through other package managers on Linux such as apt, dnf, AUR, Nix, and package managers
+for other operating systems. These packages are not guaranteed to be up-to-date.
 
-* 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`
+* Linux: Available in distro-specific package managers.
+    * `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.
+    * `dnf install micro` (Fedora).
+    * `yay -S micro` (Arch Linux).
+    * `eopkg install micro` (Solus).
+    * 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`
 
 ### Building from source
 
@@ -137,55 +159,67 @@ anywhere you like (for example `/usr/local/bin`).
 The command `make install` will install the binary to `$GOPATH/bin` or `$GOBIN`.
 
 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, and doesn't disable debug mode.
+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
+
+```
+CGO_ENABLED=0 make build
+```
+
+### 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>.
 
 ### Linux clipboard support
 
-On Linux, clipboard support requires the 'xclip' or 'xsel' commands to be installed.
+On Linux, clipboard support requires:
 
-For Ubuntu:
+- On X11, the `xclip` or `xsel` commands (for Ubuntu: `sudo apt install xclip`)
+- On Wayland, the `wl-clipboard` command
 
-```sh
-sudo apt-get install xclip
-```
-
-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.
+If you don't have these commands, micro will use an internal clipboard for copy and paste, but it won't work with external applications.
 
 ### 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 colors. 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 older 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. However, if you are on a recent version of Windows 10, the default
-`cmd.exe` should do fine.
+Many of the Windows terminals don't support more than 16 colors, which means
+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, Mingw
+### Cygwin, Mingw, Plan9
 
-These platforms are unfortunately not supported.
+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
@@ -197,22 +231,22 @@ 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
+## Contributing
 
 If you find any bugs, please report them! I am also happy to accept pull requests from anyone.
 
@@ -220,3 +254,5 @@ 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).
+
+Sometimes I am unresponsive, and I apologize! If that happens, please ping me.

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+     d="M 51.6,0 C 23.1,0 0,23.1 0,51.6 c 0,28.5 23.1,51.6 51.6,51.6 28.5,0 51.6,-23.1 51.6,-51.6 C 103.2,23.1 80.1,0 51.6,0 Z m 24.5,58.6 c -0.5,2 -1.3,3.6 -2.4,4.9 -1,1.3 -2,2.1 -3.1,2.5 -1.1,0.4 -2.2,0.6 -3.4,0.6 -1.2,0 -2.2,-0.2 -3,-0.7 C 63.4,65.5 62.8,64.8 62.3,64 61.8,63.2 61.5,62.2 61.3,61.1 61.1,60 61,58.8 61,57.5 c 0,-0.5 0,-1 0.1,-1.7 0.1,-0.7 0.2,-1.6 0.3,-1.6 l -0.2,0 c -1.6,4 -3.8,6.9 -6.6,9.2 -2.8,2.3 -5.9,3.4 -9.3,3.4 -2.3,0 -4.2,-0.9 -5.5,-2.6 -1.4,-1.7 -2.1,-4.3 -2.1,-7.7 0,-0.5 0,-1 0.1,-1.6 0.1,-0.5 0.1,-0.7 0.2,-1.7 l -0.7,0 c -0.9,2 -1.7,4.8 -2.3,7.3 -0.6,2.5 -1.1,4.8 -1.4,6.9 -0.4,2.1 -0.6,4 -0.8,5.6 -0.2,1.6 -0.3,2.7 -0.4,3.3 0.1,0.5 0.2,1 0.3,1.6 0.2,0.6 0.3,1.2 0.5,1.7 0.2,0.5 0.3,1.1 0.4,1.6 0.1,0.5 0.2,0.9 0.2,1.2 0,1.4 -0.3,2.5 -0.9,3.2 -0.6,0.7 -1.3,1.1 -2,1.1 -0.9,0 -1.7,-0.3 -2.3,-0.8 -0.7,-0.6 -1,-1.5 -1,-2.7 0,-1.7 0.3,-3.9 0.9,-6.5 0.6,-2.6 1.5,-5.9 2.6,-9.8 0.6,-1.8 1.1,-3.6 1.7,-5.4 0.6,-1.8 1.1,-3.5 1.6,-5 0.5,-1.5 0.9,-2.9 1.3,-4.1 0.4,-1.2 0.6,-2.1 0.7,-2.8 0.1,-0.3 0.2,-1 0.3,-2 0.1,-1 0.2,-2.1 0.4,-3.4 0.2,-1.3 0.3,-2.7 0.5,-4.1 0.2,-1.5 0.4,-2.8 0.5,-4 0.2,-0.9 0.3,-1.9 0.5,-3 0.2,-1.1 0.5,-2.2 0.9,-3.1 0.4,-1 1,-1.8 1.7,-2.5 0.7,-0.7 1.6,-1 2.7,-1 1.2,0 2,0.4 2.4,1.1 0.4,0.7 0.6,1.6 0.5,2.6 -0.1,1 -0.2,2.1 -0.5,3.2 -0.3,1.1 -0.6,2.1 -0.9,2.9 -0.8,2.5 -1.6,4.8 -2.5,6.7 -0.9,1.9 -1.7,4 -2.4,6.2 -0.6,1.5 -0.8,2.9 -0.8,4.1 0,2.2 0.7,3.8 2,5 1.4,1.2 3,1.7 4.9,1.7 1.5,0 3,-0.5 4.4,-1.6 1.4,-1.1 2.7,-2.4 3.9,-3.9 1.2,-1.5 2.2,-3.1 3,-4.9 0.8,-1.7 1.4,-3.3 1.8,-4.6 0.1,-0.2 0.2,-0.6 0.3,-1.4 0.2,-0.8 0.3,-1.7 0.5,-2.7 0.2,-1 0.4,-2 0.6,-3.1 0.2,-1.1 0.4,-2 0.5,-2.7 0.2,-0.8 0.3,-1.6 0.5,-2.6 0.2,-1 0.5,-1.9 0.9,-2.8 0.4,-0.9 1,-1.6 1.6,-2.2 0.7,-0.6 1.5,-0.9 2.6,-0.9 1.3,0 2.1,0.4 2.6,1.1 0.4,0.7 0.6,1.6 0.6,2.6 -0.1,1 -0.2,2 -0.5,3 -0.3,1 -0.5,1.8 -0.7,2.4 -0.8,2.5 -1.6,4.7 -2.4,6.7 -0.8,2 -1.5,3.8 -2.2,5.2 -0.6,1.5 -1.1,2.6 -1.5,3.5 -0.4,0.9 -0.6,1.5 -0.6,1.8 0,2.6 0.6,4.5 1.7,5.6 1.1,1.1 2.3,1.7 3.6,1.7 2.2,0 3.9,-0.7 5.2,-2 1.3,-1.4 2.3,-3.9 2.9,-6.9 l 0.8,0 c 0.2,2.9 -0.1,5.3 -0.6,7.3 z"
+     id="path15"
+     inkscape:connector-curvature="0"
+     style="fill:#2e3192" /></svg>

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 +6,10 @@ 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
 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

@@ -10,8 +10,8 @@ import (
 	"sort"
 	"strings"
 
-	"github.com/zyedidia/micro/internal/buffer"
-	"github.com/zyedidia/micro/internal/config"
+	"github.com/zyedidia/micro/v2/internal/buffer"
+	"github.com/zyedidia/micro/v2/internal/config"
 )
 
 func shouldContinue() bool {
@@ -41,6 +41,9 @@ func CleanConfig() {
 		return
 	}
 
+	fmt.Println("Cleaning default settings")
+	config.WriteSettings(filepath.Join(config.ConfigDir, "settings.json"))
+
 	// detect unused options
 	var unusedOptions []string
 	defaultSettings := config.DefaultAllSettings()
@@ -94,14 +97,13 @@ func CleanConfig() {
 			file, e := os.Open(fname)
 
 			if e == nil {
-				defer file.Close()
-
 				decoder := gob.NewDecoder(file)
 				err = decoder.Decode(&buffer)
 
 				if err != nil && f.Name() != "history" {
 					badFiles = append(badFiles, fname)
 				}
+				file.Close()
 			}
 		}
 
@@ -111,15 +113,21 @@ func CleanConfig() {
 			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++
 				}
 
-				fmt.Println("Removed badly formatted files")
+				if removed == 0 {
+					fmt.Println("Failed to remove files")
+				} else {
+					fmt.Printf("Removed %d badly formatted files\n", removed)
+				}
 				fmt.Print("\n\n")
 			}
 		}

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
@@ -12,7 +12,7 @@ type NullWriter struct{}
 
 // Write is empty
 func (NullWriter) Write(data []byte) (n int, err error) {
-	return 0, nil
+	return len(data), nil
 }
 
 // InitLog sets up the debug log system for micro if it has been enabled by compile-time variables

cmd/micro/initlua.go

@@ -6,14 +6,15 @@ 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"
+	"github.com/zyedidia/micro/v2/internal/lsp"
+	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() {
@@ -34,6 +35,8 @@ func LuaImport(pkg string) *lua.LTable {
 		return luaImportMicroConfig()
 	case "micro/util":
 		return luaImportMicroUtil()
+	case "micro/lsp":
+		return luaImportMicroLsp()
 	default:
 		return ulua.Import(pkg)
 	}
@@ -53,6 +56,10 @@ func luaImportMicro() *lua.LTable {
 	ulua.L.SetField(pkg, "CurTab", luar.New(ulua.L, func() *action.Tab {
 		return 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
 }
@@ -83,6 +90,7 @@ func luaImportMicroConfig() *lua.LTable {
 	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
 }
@@ -141,9 +149,17 @@ func luaImportMicroUtil() *lua.LTable {
 	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, "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
 }
+func luaImportMicroLsp() *lua.LTable {
+	pkg := ulua.L.NewTable()
+
+	ulua.L.SetField(pkg, "GetLanguage", luar.New(ulua.L, lsp.GetLanguage))
+
+	return pkg
+}

cmd/micro/micro.go

@@ -5,24 +5,31 @@ import (
 	"fmt"
 	"io/ioutil"
 	"os"
+	"os/signal"
+	"regexp"
 	"runtime"
 	"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"
+	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"
+	"github.com/zyedidia/micro/v2/internal/lsp"
+	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"
 )
 
 var (
 	// Event channel
-	events   chan tcell.Event
 	autosave chan bool
 
 	// Command line flags
@@ -42,7 +49,8 @@ func InitFlags() {
 		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("-options")
 		fmt.Println("    \tShow all option help")
@@ -128,7 +136,7 @@ func DoPluginFlags() {
 
 // 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
@@ -143,14 +151,47 @@ 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
@@ -167,17 +208,24 @@ 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)
+	defer func() {
+		lsp.ShutdownAllServers()
+
+		if util.Stdout.Len() > 0 {
+			fmt.Fprint(os.Stdout, util.Stdout.String())
+		}
+		os.Exit(0)
+	}()
 
 	// runtime.SetCPUProfileRate(400)
 	// f, _ := os.Create("micro.prof")
@@ -200,7 +248,15 @@ func main() {
 	if err != nil {
 		screen.TermMessage(err)
 	}
-	config.InitGlobalSettings()
+	err = config.InitGlobalSettings()
+	if err != nil {
+		screen.TermMessage(err)
+	}
+
+	err = lsp.Init()
+	if err != nil {
+		screen.TermMessage(err)
+	}
 
 	// flag options
 	for k, v := range optionFlags {
@@ -216,18 +272,36 @@ func main() {
 
 	DoPluginFlags()
 
-	screen.Init()
+	err = screen.Init()
+	if err != nil {
+		fmt.Println(err)
+		fmt.Println("Fatal: Micro could not initialize a Screen.")
+		os.Exit(1)
+	}
+
+	c := make(chan os.Signal, 1)
+	signal.Notify(c, os.Kill, syscall.SIGTERM)
+
+	go func() {
+		<-c
+		if screen.Screen != nil {
+			screen.Screen.Fini()
+		}
+		os.Exit(0)
+	}()
+
+	m := clipboard.SetMethod(config.GetGlobalOption("clipboard").(string))
+	clipErr := clipboard.Initialize(m)
 
-	// 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()
+			if screen.Screen != nil {
+				screen.Screen.Fini()
+			}
 			fmt.Println("Micro encountered an error:", err)
 			// backup all open buffers
 			for _, b := range buffer.OpenBuffers {
-				b.Backup(false)
+				b.Backup()
 			}
 			// Print the stack trace too
 			fmt.Print(errors.Wrap(err, 2).ErrorStack())
@@ -248,7 +322,13 @@ func main() {
 		screen.TermMessage(err)
 	}
 
-	b := LoadInput()
+	err = config.RunPluginFn("preinit")
+	if err != nil {
+		screen.TermMessage(err)
+	}
+
+	args := flag.Args()
+	b := LoadInput(args)
 
 	if len(b) == 0 {
 		// No buffers to open
@@ -264,7 +344,16 @@ func main() {
 		screen.TermMessage(err)
 	}
 
-	events = make(chan tcell.Event)
+	err = config.RunPluginFn("postinit")
+	if err != nil {
+		screen.TermMessage(err)
+	}
+
+	if clipErr != nil {
+		action.InfoBar.Error(clipErr, " or change 'clipboard' option")
+	}
+
+	screen.Events = make(chan tcell.Event)
 
 	// Here is the event loop which runs in a separate thread
 	go func() {
@@ -273,59 +362,85 @@ 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
+	for len(screen.DrawChan()) > 0 {
+		<-screen.DrawChan()
 	}
 
-	var event tcell.Event
-
 	// wait for initial resize event
 	select {
-	case event = <-events:
+	case event := <-screen.Events:
 		action.Tabs.HandleEvent(event)
 	case <-time.After(10 * time.Millisecond):
 		// time out after 10ms
 	}
 
+	// Since this loop is very slow (waits for user input every time) it's
+	// okay to be inefficient and run it via a function every time
+	// We do this so we can recover from panics without crashing the editor
 	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()
-
-		event = nil
-
-		// 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
+
+	// recover from errors without crashing the editor
+	defer func() {
+		if err := recover(); err != nil {
+			if e, ok := err.(*lua.ApiError); ok {
+				screen.TermMessage("Lua API error:", e)
+			} else {
+				screen.TermMessage("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")
+			}
+		}
+	}()
+	// 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()
+	action.InfoBar.Message("")
+
+	// 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()
+		}
+	}
+
+	ulua.Lock.Lock()
+	if action.InfoBar.HasPrompt {
+		action.InfoBar.HandleEvent(event)
+	} else {
+		action.Tabs.HandleEvent(event)
+	}
+	ulua.Lock.Unlock()
+}

cmd/micro/micro_test.go

@@ -0,0 +1,341 @@
+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"
+)
+
+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())
+			os.Exit(1)
+		}
+	}()
+
+	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)
+		os.Exit(1)
+	}
+
+	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)?

go.mod

@@ -1,4 +1,4 @@
-module github.com/zyedidia/micro
+module github.com/zyedidia/micro/v2
 
 require (
 	github.com/blang/semver v3.5.1+incompatible
@@ -8,19 +8,27 @@ require (
 	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/robertkrimen/otto v0.0.0-20191219234010-c382bd3c16ff
 	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/clipboard v1.0.3
 	github.com/zyedidia/glob v0.0.0-20170209203856-dd4023a66dc3
 	github.com/zyedidia/highlight v0.0.0-20170330143449-201131ce5cf5
 	github.com/zyedidia/json5 v0.0.0-20200102012142-2da050b1a98d
 	github.com/zyedidia/pty v2.0.0+incompatible // indirect
-	github.com/zyedidia/tcell v1.4.2
+	github.com/zyedidia/tcell v1.4.10
 	github.com/zyedidia/terminal v0.0.0-20180726154117-533c623e2415
+	go.lsp.dev/protocol v0.8.0
+	go.lsp.dev/uri v0.3.0
 	golang.org/x/text v0.3.2
+	gopkg.in/sourcemap.v1 v1.0.5 // indirect
 	gopkg.in/yaml.v2 v2.2.7
 	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/p-e-w/go-runewidth v0.0.10-0.20200613030200-3e1705c5c059
+
 go 1.11

go.sum

@@ -1,47 +1,145 @@
+cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+cloud.google.com/go v0.31.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+cloud.google.com/go v0.37.0/go.mod h1:TS1dMSSfndXH133OKGwekG838Om/cQT0BUHV3HcBgoo=
+dmitri.shuralyov.com/app/changes v0.0.0-20180602232624-0a106ad413e3/go.mod h1:Yl+fi1br7+Rr3LqpNJf1/uxUdtRUV+Tnj0o93V2B9MU=
+dmitri.shuralyov.com/html/belt v0.0.0-20180602232347-f7d459c86be0/go.mod h1:JLBrvjyP0v+ecvNYvCpyZgu5/xkfAUhi6wJj28eUfSU=
+dmitri.shuralyov.com/service/change v0.0.0-20181023043359-a85b471d5412/go.mod h1:a1inKt/atXimZ4Mv927x+r7UpyzRUf4emIoiiSC2TN4=
+dmitri.shuralyov.com/state v0.0.0-20180228185332-28bcc343414c/go.mod h1:0PRwlb0D6DFvNNtx+9ybjezNCa8XF0xaYcETyp6rHWU=
+git.apache.org/thrift.git v0.0.0-20180902110319-2566ecd5d999/go.mod h1:fPE2ZNJGynbRyZ4dJvy6G277gSllfV2HJqblrnkyeyg=
+github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ=
+github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
+github.com/anmitsu/go-shlex v0.0.0-20161002113705-648efa622239/go.mod h1:2FmKhYUyUczH0OGQWaF5ceTx0UBShxjsH6f8oGKYe2c=
+github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
 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/bradfitz/go-smtpd v0.0.0-20170404230938-deb6d6237625/go.mod h1:HYsPBTaaSFSlLx/70C2HPIMNZpVV8+vt/A+FMnYP11g=
+github.com/buger/jsonparser v0.0.0-20181115193947-bf1c66bbce23/go.mod h1:bbYlZJ7hK1yFx9hf58LP0zeX7UjIGs20ufpu3evjr+s=
 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/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
+github.com/coreos/go-systemd v0.0.0-20181012123002-c6f51f82210d/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4=
 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/go-shlex v0.0.0-20150515145356-3f9db97f8568/go.mod h1:xEzjJPgXI435gkrCt3MPfRiAkVrwSbHsst4LCFVfpJc=
+github.com/francoispqt/gojay v1.2.13 h1:d2m3sFjloqoIUQU3TsHBgj6qg/BVGlTBeHDUmyJnXKk=
+github.com/francoispqt/gojay v1.2.13/go.mod h1:ehT5mTG4ua4581f1++1WLG0vPdaA9HaiDsoyrBGkyDY=
+github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
 github.com/gdamore/encoding v1.0.0 h1:+7OoQ1Bc6eTm5niUzBa0Ctsh6JbMW6Ra+YNuAtDBdko=
 github.com/gdamore/encoding v1.0.0/go.mod h1:alR0ol34c49FCSBLjhosxzcPHQbf2trDkoo5dl+VrEg=
+github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
+github.com/gliderlabs/ssh v0.1.1/go.mod h1:U7qILu1NlMHj9FlMhZLlkCdDnU1DBEAqr0aevW3Awn0=
 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/kballard/go-shellquote v0.0.0-20180428030007-95032a82bc51 h1:Z9n2FFNUXsshfwJMBgNA0RU6/i7WVaAegv3PtuIHPMs=
-github.com/kballard/go-shellquote v0.0.0-20180428030007-95032a82bc51/go.mod h1:CzGEWj7cYgsdH8dAjBGEr58BoE7ScuLd+fwFZ44+/x8=
+github.com/gogo/protobuf v1.1.1/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ=
+github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
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+sourcegraph.com/sourcegraph/go-diff v0.5.0/go.mod h1:kuch7UrkMzY0X+p9CRK03kfuPQ2zzQcaEFbx8wA8rck=
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internal/action/actions.go

@@ -5,16 +5,17 @@ import (
 	"runtime"
 	"strings"
 	"time"
-	"unicode/utf8"
 
 	shellquote "github.com/kballard/go-shellquote"
-	"github.com/zyedidia/clipboard"
-	"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/micro/v2/internal/buffer"
+	"github.com/zyedidia/micro/v2/internal/clipboard"
+	"github.com/zyedidia/micro/v2/internal/config"
+	"github.com/zyedidia/micro/v2/internal/lsp"
+	"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"
+	"go.lsp.dev/protocol"
 )
 
 // ScrollUp is not an action
@@ -60,7 +61,7 @@ func (h *BufPane) MousePress(e *tcell.EventMouse) bool {
 				h.doubleClick = false
 
 				h.Cursor.SelectLine()
-				h.Cursor.CopySelection("primary")
+				h.Cursor.CopySelection(clipboard.PrimaryReg)
 			} else {
 				// Double click
 				h.lastClickTime = time.Now()
@@ -69,7 +70,7 @@ func (h *BufPane) MousePress(e *tcell.EventMouse) bool {
 				h.tripleClick = false
 
 				h.Cursor.SelectWord()
-				h.Cursor.CopySelection("primary")
+				h.Cursor.CopySelection(clipboard.PrimaryReg)
 			}
 		} else {
 			h.doubleClick = false
@@ -93,6 +94,7 @@ func (h *BufPane) MousePress(e *tcell.EventMouse) bool {
 
 	h.Cursor.StoreVisualX()
 	h.lastLoc = mouseLoc
+	h.Relocate()
 	return true
 }
 
@@ -175,7 +177,7 @@ func (h *BufPane) CursorRight() bool {
 		if tabstospaces && tabmovement {
 			tabsize := int(h.Buf.Settings["tabsize"].(float64))
 			line := h.Buf.LineBytes(h.Cursor.Y)
-			if h.Cursor.X+tabsize < utf8.RuneCount(line) && util.IsSpaces(line[h.Cursor.X:h.Cursor.X+tabsize]) && util.IsBytesWhitespace(line[0:h.Cursor.X]) {
+			if h.Cursor.X+tabsize < util.CharacterCount(line) && util.IsSpaces(line[h.Cursor.X:h.Cursor.X+tabsize]) && util.IsBytesWhitespace(line[0:h.Cursor.X]) {
 				for i := 0; i < tabsize; i++ {
 					h.Cursor.Right()
 				}
@@ -283,7 +285,7 @@ func (h *BufPane) SelectWordLeft() bool {
 	return true
 }
 
-// StartOfLine moves the cursor to the start of the text of the line
+// StartOfText moves the cursor to the start of the text of the line
 func (h *BufPane) StartOfText() bool {
 	h.Cursor.Deselect(true)
 	h.Cursor.StartOfText()
@@ -291,6 +293,19 @@ func (h *BufPane) StartOfText() bool {
 	return true
 }
 
+// StartOfTextToggle toggles the cursor between the start of the text of the line
+// and the start of the line
+func (h *BufPane) StartOfTextToggle() bool {
+	h.Cursor.Deselect(true)
+	if h.Cursor.IsStartOfText() {
+		h.Cursor.Start()
+	} else {
+		h.Cursor.StartOfText()
+	}
+	h.Relocate()
+	return true
+}
+
 // StartOfLine moves the cursor to the start of the line
 func (h *BufPane) StartOfLine() bool {
 	h.Cursor.Deselect(true)
@@ -325,6 +340,22 @@ func (h *BufPane) SelectToStartOfText() bool {
 	return true
 }
 
+// SelectToStartOfTextToggle toggles the selection between the start of the text
+// on the current line and the start of the line
+func (h *BufPane) SelectToStartOfTextToggle() bool {
+	if !h.Cursor.HasSelection() {
+		h.Cursor.OrigSelection[0] = h.Cursor.Loc
+	}
+	if h.Cursor.IsStartOfText() {
+		h.Cursor.Start()
+	} else {
+		h.Cursor.StartOfText()
+	}
+	h.Cursor.SelectTo(h.Cursor.Loc)
+	h.Relocate()
+	return true
+}
+
 // SelectToStartOfLine selects to the start of the current line
 func (h *BufPane) SelectToStartOfLine() bool {
 	if !h.Cursor.HasSelection() {
@@ -396,6 +427,7 @@ func (h *BufPane) CursorStart() bool {
 	h.Cursor.Deselect(true)
 	h.Cursor.X = 0
 	h.Cursor.Y = 0
+	h.Cursor.StoreVisualX()
 	h.Relocate()
 	return true
 }
@@ -456,7 +488,7 @@ func (h *BufPane) InsertNewline() bool {
 		// Remove the whitespaces if keepautoindent setting is off
 		if util.IsSpacesOrTabs(h.Buf.LineBytes(h.Cursor.Y-1)) && !h.Buf.Settings["keepautoindent"].(bool) {
 			line := h.Buf.LineBytes(h.Cursor.Y - 1)
-			h.Buf.Remove(buffer.Loc{X: 0, Y: h.Cursor.Y - 1}, buffer.Loc{X: utf8.RuneCount(line), Y: h.Cursor.Y - 1})
+			h.Buf.Remove(buffer.Loc{X: 0, Y: h.Cursor.Y - 1}, buffer.Loc{X: util.CharacterCount(line), Y: h.Cursor.Y - 1})
 		}
 	}
 	h.Cursor.LastVisualX = h.Cursor.GetVisualX()
@@ -481,7 +513,7 @@ func (h *BufPane) Backspace() bool {
 		// tab (tabSize number of spaces)
 		lineStart := util.SliceStart(h.Buf.LineBytes(h.Cursor.Y), h.Cursor.X)
 		tabSize := int(h.Buf.Settings["tabsize"].(float64))
-		if h.Buf.Settings["tabstospaces"].(bool) && util.IsSpaces(lineStart) && len(lineStart) != 0 && utf8.RuneCount(lineStart)%tabSize == 0 {
+		if h.Buf.Settings["tabstospaces"].(bool) && util.IsSpaces(lineStart) && len(lineStart) != 0 && util.CharacterCount(lineStart)%tabSize == 0 {
 			loc := h.Cursor.Loc
 			h.Buf.Remove(loc.Move(-tabSize, h.Buf), loc)
 		} else {
@@ -566,6 +598,20 @@ func (h *BufPane) IndentSelection() bool {
 	return false
 }
 
+// IndentLine moves the current line forward one indentation
+func (h *BufPane) IndentLine() bool {
+	if h.Cursor.HasSelection() {
+		return false
+	}
+
+	tabsize := int(h.Buf.Settings["tabsize"].(float64))
+	indentstr := h.Buf.IndentString(tabsize)
+	h.Buf.Insert(buffer.Loc{X: 0, Y: h.Cursor.Y}, indentstr)
+	h.Buf.RelocateCursors()
+	h.Relocate()
+	return true
+}
+
 // OutdentLine moves the current line back one indentation
 func (h *BufPane) OutdentLine() bool {
 	if h.Cursor.HasSelection() {
@@ -620,11 +666,30 @@ func (h *BufPane) Autocomplete() bool {
 		return false
 	}
 
+	// if there is an existing completion, always cycle it
 	if b.HasSuggestions {
-		b.CycleAutocomplete(true)
+		h.cycleAutocomplete(true)
 		return true
 	}
-	return b.Autocomplete(buffer.BufferComplete)
+
+	// don't start a new completion unless the correct conditions are met
+	if h.Cursor.X == 0 {
+		return false
+	}
+	r := h.Cursor.RuneUnder(h.Cursor.X)
+	prev := h.Cursor.RuneUnder(h.Cursor.X - 1)
+	if !util.IsAutocomplete(prev) || !util.IsNonAlphaNumeric(r) {
+		// don't autocomplete if cursor is on alpha numeric character (middle of a word)
+		return false
+	}
+	ret := true
+	if !b.Autocomplete(buffer.LSPComplete) {
+		ret = b.Autocomplete(buffer.BufferComplete)
+	}
+	if ret {
+		h.displayCompletionDoc()
+	}
+	return true
 }
 
 // CycleAutocompleteBack cycles back in the autocomplete suggestion list
@@ -634,12 +699,24 @@ func (h *BufPane) CycleAutocompleteBack() bool {
 	}
 
 	if h.Buf.HasSuggestions {
-		h.Buf.CycleAutocomplete(false)
+		h.cycleAutocomplete(false)
 		return true
 	}
 	return false
 }
 
+func (h *BufPane) cycleAutocomplete(forward bool) {
+	h.Buf.CycleAutocomplete(forward)
+	h.displayCompletionDoc()
+}
+
+func (h *BufPane) displayCompletionDoc() {
+	c := h.Buf.CurCompletion
+	if c >= 0 && c < len(h.Buf.Completions) {
+		InfoBar.Message(h.Buf.Completions[c].Doc)
+	}
+}
+
 // InsertTab inserts a tab or spaces
 func (h *BufPane) InsertTab() bool {
 	b := h.Buf
@@ -659,23 +736,28 @@ func (h *BufPane) SaveAll() bool {
 	return true
 }
 
-// Save the buffer to disk
-func (h *BufPane) Save() bool {
+// SaveCB performs a save and does a callback at the very end (after all prompts have been resolved)
+func (h *BufPane) SaveCB(action string, callback func()) bool {
 	// If this is an empty buffer, ask for a filename
 	if h.Buf.Path == "" {
-		h.SaveAs()
+		h.SaveAsCB(action, callback)
 	} else {
-		noPrompt := h.saveBufToFile(h.Buf.Path, "Save")
+		noPrompt := h.saveBufToFile(h.Buf.Path, action, callback)
 		if noPrompt {
 			return true
 		}
 	}
-
 	return false
 }
 
-// SaveAs saves the buffer to disk with the given name
-func (h *BufPane) SaveAs() bool {
+// Save the buffer to disk
+func (h *BufPane) Save() bool {
+	return h.SaveCB("Save", nil)
+}
+
+// SaveAsCB performs a save as and does a callback at the very end (after all prompts have been resolved)
+// The callback is only called if the save was successful
+func (h *BufPane) SaveAsCB(action string, callback func()) bool {
 	InfoBar.Prompt("Filename: ", "", "Save", nil, func(resp string, canceled bool) {
 		if !canceled {
 			// the filename might or might not be quoted, so unquote first then join the strings.
@@ -689,35 +771,51 @@ func (h *BufPane) SaveAs() bool {
 				return
 			}
 			filename := strings.Join(args, " ")
-			noPrompt := h.saveBufToFile(filename, "SaveAs")
+			noPrompt := h.saveBufToFile(filename, action, callback)
 			if noPrompt {
-				h.completeAction("SaveAs")
+				h.completeAction(action)
 			}
 		}
 	})
 	return false
 }
 
+// SaveAs saves the buffer to disk with the given name
+func (h *BufPane) SaveAs() bool {
+	return h.SaveAsCB("SaveAs", nil)
+}
+
 // This function saves the buffer to `filename` and changes the buffer's path and name
 // to `filename` if the save is successful
-func (h *BufPane) saveBufToFile(filename string, action string) bool {
+// The callback is only called if the save was successful
+func (h *BufPane) saveBufToFile(filename string, action string, callback func()) bool {
 	err := h.Buf.SaveAs(filename)
 	if err != nil {
 		if strings.HasSuffix(err.Error(), "permission denied") {
-			InfoBar.YNPrompt("Permission denied. Do you want to save this file using sudo? (y,n)", func(yes, canceled bool) {
-				if yes && !canceled {
-					err = h.Buf.SaveAsWithSudo(filename)
-					if err != nil {
-						InfoBar.Error(err)
-					} else {
-						h.Buf.Path = filename
-						h.Buf.SetName(filename)
-						InfoBar.Message("Saved " + filename)
+			saveWithSudo := func() {
+				err = h.Buf.SaveAsWithSudo(filename)
+				if err != nil {
+					InfoBar.Error(err)
+				} else {
+					h.Buf.Path = filename
+					h.Buf.SetName(filename)
+					InfoBar.Message("Saved " + filename)
+					if callback != nil {
+						callback()
 					}
-					h.completeAction(action)
 				}
-			})
-			return false
+			}
+			if h.Buf.Settings["autosu"].(bool) {
+				saveWithSudo()
+			} else {
+				InfoBar.YNPrompt("Permission denied. Do you want to save this file using sudo? (y,n)", func(yes, canceled bool) {
+					if yes && !canceled {
+						saveWithSudo()
+						h.completeAction(action)
+					}
+				})
+				return false
+			}
 		} else {
 			InfoBar.Error(err)
 		}
@@ -725,16 +823,56 @@ func (h *BufPane) saveBufToFile(filename string, action string) bool {
 		h.Buf.Path = filename
 		h.Buf.SetName(filename)
 		InfoBar.Message("Saved " + filename)
+		if callback != nil {
+			callback()
+		}
 	}
 	return true
 }
 
 // Find opens a prompt and searches forward for the input
 func (h *BufPane) Find() bool {
+	return h.find(true)
+}
+
+// FindLiteral is the same as Find() but does not support regular expressions
+func (h *BufPane) FindLiteral() bool {
+	return h.find(false)
+}
+
+// Search searches for a given string/regex in the buffer and selects the next
+// match if a match is found
+// This function affects lastSearch and lastSearchRegex (saved searches) for
+// use with FindNext and FindPrevious
+func (h *BufPane) Search(str string, useRegex bool, searchDown bool) error {
+	match, found, err := h.Buf.FindNext(str, h.Buf.Start(), h.Buf.End(), h.Cursor.Loc, searchDown, useRegex)
+	if err != nil {
+		return err
+	}
+	if found {
+		h.Cursor.SetSelectionStart(match[0])
+		h.Cursor.SetSelectionEnd(match[1])
+		h.Cursor.OrigSelection[0] = h.Cursor.CurSelection[0]
+		h.Cursor.OrigSelection[1] = h.Cursor.CurSelection[1]
+		h.Cursor.GotoLoc(h.Cursor.CurSelection[1])
+		h.lastSearch = str
+		h.lastSearchRegex = useRegex
+		h.Relocate()
+	} else {
+		h.Cursor.ResetSelection()
+	}
+	return nil
+}
+
+func (h *BufPane) find(useRegex bool) bool {
 	h.searchOrig = h.Cursor.Loc
-	InfoBar.Prompt("Find: ", "", "Find", func(resp string) {
+	prompt := "Find: "
+	if useRegex {
+		prompt = "Find (regex): "
+	}
+	InfoBar.Prompt(prompt, "", "Find", func(resp string) {
 		// Event callback
-		match, found, _ := h.Buf.FindNext(resp, h.Buf.Start(), h.Buf.End(), h.searchOrig, true, true)
+		match, found, _ := h.Buf.FindNext(resp, h.Buf.Start(), h.Buf.End(), h.searchOrig, true, useRegex)
 		if found {
 			h.Cursor.SetSelectionStart(match[0])
 			h.Cursor.SetSelectionEnd(match[1])
@@ -749,7 +887,7 @@ func (h *BufPane) Find() bool {
 	}, func(resp string, canceled bool) {
 		// Finished callback
 		if !canceled {
-			match, found, err := h.Buf.FindNext(resp, h.Buf.Start(), h.Buf.End(), h.searchOrig, true, true)
+			match, found, err := h.Buf.FindNext(resp, h.Buf.Start(), h.Buf.End(), h.searchOrig, true, useRegex)
 			if err != nil {
 				InfoBar.Error(err)
 			}
@@ -760,6 +898,7 @@ func (h *BufPane) Find() bool {
 				h.Cursor.OrigSelection[1] = h.Cursor.CurSelection[1]
 				h.Cursor.GotoLoc(h.Cursor.CurSelection[1])
 				h.lastSearch = resp
+				h.lastSearchRegex = useRegex
 			} else {
 				h.Cursor.ResetSelection()
 				InfoBar.Message("No matches found")
@@ -783,7 +922,7 @@ func (h *BufPane) FindNext() bool {
 	if h.Cursor.HasSelection() {
 		searchLoc = h.Cursor.CurSelection[1]
 	}
-	match, found, err := h.Buf.FindNext(h.lastSearch, h.Buf.Start(), h.Buf.End(), searchLoc, true, true)
+	match, found, err := h.Buf.FindNext(h.lastSearch, h.Buf.Start(), h.Buf.End(), searchLoc, true, h.lastSearchRegex)
 	if err != nil {
 		InfoBar.Error(err)
 	}
@@ -810,7 +949,7 @@ func (h *BufPane) FindPrevious() bool {
 	if h.Cursor.HasSelection() {
 		searchLoc = h.Cursor.CurSelection[0]
 	}
-	match, found, err := h.Buf.FindNext(h.lastSearch, h.Buf.Start(), h.Buf.End(), searchLoc, false, true)
+	match, found, err := h.Buf.FindNext(h.lastSearch, h.Buf.Start(), h.Buf.End(), searchLoc, false, h.lastSearchRegex)
 	if err != nil {
 		InfoBar.Error(err)
 	}
@@ -846,18 +985,29 @@ func (h *BufPane) Redo() bool {
 // Copy the selection to the system clipboard
 func (h *BufPane) Copy() bool {
 	if h.Cursor.HasSelection() {
-		h.Cursor.CopySelection("clipboard")
+		h.Cursor.CopySelection(clipboard.ClipboardReg)
 		h.freshClip = true
-		if clipboard.Unsupported {
-			InfoBar.Message("Copied selection (install xclip for external clipboard)")
-		} else {
-			InfoBar.Message("Copied selection")
-		}
+		InfoBar.Message("Copied selection")
 	}
 	h.Relocate()
 	return true
 }
 
+// Copy the current line to the clipboard
+func (h *BufPane) CopyLine() bool {
+	if h.Cursor.HasSelection() {
+		return false
+	} else {
+		h.Cursor.SelectLine()
+		h.Cursor.CopySelection(clipboard.ClipboardReg)
+		h.freshClip = true
+		InfoBar.Message("Copied line")
+	}
+	h.Cursor.Deselect(true)
+	h.Relocate()
+	return true
+}
+
 // CutLine cuts the current line to the clipboard
 func (h *BufPane) CutLine() bool {
 	h.Cursor.SelectLine()
@@ -866,10 +1016,10 @@ func (h *BufPane) CutLine() bool {
 	}
 	if h.freshClip == true {
 		if h.Cursor.HasSelection() {
-			if clip, err := clipboard.ReadAll("clipboard"); err != nil {
-				// messenger.Error(err)
+			if clip, err := clipboard.Read(clipboard.ClipboardReg); err != nil {
+				InfoBar.Error(err)
 			} else {
-				clipboard.WriteAll(clip+string(h.Cursor.GetSelection()), "clipboard")
+				clipboard.WriteMulti(clip+string(h.Cursor.GetSelection()), clipboard.ClipboardReg, h.Cursor.Num, h.Buf.NumCursors())
 			}
 		}
 	} else if time.Since(h.lastCutTime)/time.Second > 10*time.Second || h.freshClip == false {
@@ -887,7 +1037,7 @@ func (h *BufPane) CutLine() bool {
 // Cut the selection to the system clipboard
 func (h *BufPane) Cut() bool {
 	if h.Cursor.HasSelection() {
-		h.Cursor.CopySelection("clipboard")
+		h.Cursor.CopySelection(clipboard.ClipboardReg)
 		h.Cursor.DeleteSelection()
 		h.Cursor.ResetSelection()
 		h.freshClip = true
@@ -937,15 +1087,26 @@ func (h *BufPane) MoveLinesUp() bool {
 		}
 		start := h.Cursor.CurSelection[0].Y
 		end := h.Cursor.CurSelection[1].Y
+		sel := 1
 		if start > end {
 			end, start = start, end
+			sel = 0
+		}
+
+		compensate := false
+		if h.Cursor.CurSelection[sel].X != 0 {
+			end++
+		} else {
+			compensate = true
 		}
 
 		h.Buf.MoveLinesUp(
 			start,
 			end,
 		)
-		h.Cursor.CurSelection[1].Y -= 1
+		if compensate {
+			h.Cursor.CurSelection[sel].Y -= 1
+		}
 	} else {
 		if h.Cursor.Loc.Y == 0 {
 			InfoBar.Message("Cannot move further up")
@@ -970,8 +1131,14 @@ func (h *BufPane) MoveLinesDown() bool {
 		}
 		start := h.Cursor.CurSelection[0].Y
 		end := h.Cursor.CurSelection[1].Y
+		sel := 1
 		if start > end {
 			end, start = start, end
+			sel = 0
+		}
+
+		if h.Cursor.CurSelection[sel].X != 0 {
+			end++
 		}
 
 		h.Buf.MoveLinesDown(
@@ -996,16 +1163,24 @@ func (h *BufPane) MoveLinesDown() bool {
 // Paste whatever is in the system clipboard into the buffer
 // Delete and paste if the user has a selection
 func (h *BufPane) Paste() bool {
-	clip, _ := clipboard.ReadAll("clipboard")
-	h.paste(clip)
+	clip, err := clipboard.ReadMulti(clipboard.ClipboardReg, h.Cursor.Num, h.Buf.NumCursors())
+	if err != nil {
+		InfoBar.Error(err)
+	} else {
+		h.paste(clip)
+	}
 	h.Relocate()
 	return true
 }
 
 // PastePrimary pastes from the primary clipboard (only use on linux)
 func (h *BufPane) PastePrimary() bool {
-	clip, _ := clipboard.ReadAll("primary")
-	h.paste(clip)
+	clip, err := clipboard.ReadMulti(clipboard.PrimaryReg, h.Cursor.Num, h.Buf.NumCursors())
+	if err != nil {
+		InfoBar.Error(err)
+	} else {
+		h.paste(clip)
+	}
 	h.Relocate()
 	return true
 }
@@ -1026,11 +1201,7 @@ func (h *BufPane) paste(clip string) {
 	h.Buf.Insert(h.Cursor.Loc, clip)
 	// h.Cursor.Loc = h.Cursor.Loc.Move(Count(clip), h.Buf)
 	h.freshClip = false
-	if clipboard.Unsupported {
-		InfoBar.Message("Pasted clipboard (install xclip for external clipboard)")
-	} else {
-		InfoBar.Message("Pasted clipboard")
-	}
+	InfoBar.Message("Pasted clipboard")
 }
 
 // JumpToMatchingBrace moves the cursor to the matching brace if it is
@@ -1040,11 +1211,15 @@ func (h *BufPane) JumpToMatchingBrace() bool {
 		r := h.Cursor.RuneUnder(h.Cursor.X)
 		rl := h.Cursor.RuneUnder(h.Cursor.X - 1)
 		if r == bp[0] || r == bp[1] || rl == bp[0] || rl == bp[1] {
-			matchingBrace, left := h.Buf.FindMatchingBrace(bp, h.Cursor.Loc)
-			if left {
-				h.Cursor.GotoLoc(matchingBrace)
+			matchingBrace, left, found := h.Buf.FindMatchingBrace(bp, h.Cursor.Loc)
+			if found {
+				if left {
+					h.Cursor.GotoLoc(matchingBrace)
+				} else {
+					h.Cursor.GotoLoc(matchingBrace.Move(1, h.Buf))
+				}
 			} else {
-				h.Cursor.GotoLoc(matchingBrace.Move(1, h.Buf))
+				return false
 			}
 		}
 	}
@@ -1074,6 +1249,16 @@ func (h *BufPane) OpenFile() bool {
 	return true
 }
 
+// OpenFile opens a new file in the buffer
+func (h *BufPane) JumpLine() bool {
+	InfoBar.Prompt("> ", "goto ", "Command", nil, func(resp string, canceled bool) {
+		if !canceled {
+			h.HandleCommand(resp)
+		}
+	})
+	return true
+}
+
 // Start moves the viewport to the start of the buffer
 func (h *BufPane) Start() bool {
 	v := h.GetView()
@@ -1195,6 +1380,21 @@ func (h *BufPane) HalfPageDown() bool {
 	return true
 }
 
+// ToggleDiffGutter turns the diff gutter off and on
+func (h *BufPane) ToggleDiffGutter() bool {
+	if !h.Buf.Settings["diffgutter"].(bool) {
+		h.Buf.Settings["diffgutter"] = true
+		h.Buf.UpdateDiff(func(synchronous bool) {
+			screen.Redraw()
+		})
+		InfoBar.Message("Enabled diff gutter")
+	} else {
+		h.Buf.Settings["diffgutter"] = false
+		InfoBar.Message("Disabled diff gutter")
+	}
+	return true
+}
+
 // ToggleRuler turns line numbers off and on
 func (h *BufPane) ToggleRuler() bool {
 	if !h.Buf.Settings["ruler"].(bool) {
@@ -1263,6 +1463,18 @@ func (h *BufPane) Escape() bool {
 	return true
 }
 
+// Deselect deselects on the current cursor
+func (h *BufPane) Deselect() bool {
+	h.Cursor.Deselect(true)
+	return true
+}
+
+// ClearInfo clears the infobar
+func (h *BufPane) ClearInfo() bool {
+	InfoBar.Message("")
+	return true
+}
+
 // Quit this will close the current tab or view that is open
 func (h *BufPane) Quit() bool {
 	quit := func() {
@@ -1280,15 +1492,17 @@ func (h *BufPane) Quit() bool {
 	if h.Buf.Modified() {
 		if config.GlobalSettings["autosave"].(float64) > 0 {
 			// autosave on means we automatically save when quitting
-			h.Save()
-			quit()
+			h.SaveCB("Quit", func() {
+				quit()
+			})
 		} else {
 			InfoBar.YNPrompt("Save changes to "+h.Buf.GetName()+" before closing? (y,n,esc)", func(yes, canceled bool) {
 				if !canceled && !yes {
 					quit()
 				} else if !canceled && yes {
-					h.Save()
-					quit()
+					h.SaveCB("Quit", func() {
+						quit()
+					})
 				}
 			})
 		}
@@ -1344,8 +1558,9 @@ func (h *BufPane) AddTab() bool {
 
 // PreviousTab switches to the previous tab in the tab list
 func (h *BufPane) PreviousTab() bool {
-	a := Tabs.Active()
-	Tabs.SetActive(util.Clamp(a-1, 0, len(Tabs.List)-1))
+	tabsLen := len(Tabs.List)
+	a := Tabs.Active() + tabsLen
+	Tabs.SetActive((a - 1) % tabsLen)
 
 	return true
 }
@@ -1353,7 +1568,8 @@ func (h *BufPane) PreviousTab() bool {
 // NextTab switches to the next tab in the tab list
 func (h *BufPane) NextTab() bool {
 	a := Tabs.Active()
-	Tabs.SetActive(util.Clamp(a+1, 0, len(Tabs.List)-1))
+	Tabs.SetActive((a + 1) % len(Tabs.List))
+
 	return true
 }
 
@@ -1505,7 +1721,7 @@ func (h *BufPane) SpawnMultiCursorUp() bool {
 	return true
 }
 
-// SpawnMultiCursorUp creates additional cursor, at the same X (if possible), one Y more.
+// SpawnMultiCursorDown creates additional cursor, at the same X (if possible), one Y more.
 func (h *BufPane) SpawnMultiCursorDown() bool {
 	if h.Cursor.Y+1 == h.Buf.LinesNum() {
 		return false
@@ -1621,6 +1837,52 @@ func (h *BufPane) RemoveAllMultiCursors() bool {
 	return true
 }
 
+// SemanticInfo returns information about the identifier the cursor is on and
+// displays the information in the infobar
+// The information is fetched using the LSP server (must be enabled)
+func (h *BufPane) SemanticInfo() bool {
+	info, err := h.Buf.Server.Hover(h.Buf.AbsPath, lsp.Position(h.Cursor.X, h.Cursor.Y))
+
+	if err != nil {
+		InfoBar.Error(err)
+		return false
+	}
+
+	info = strings.Split(info, "\n")[0]
+
+	InfoBar.Message(info)
+	return true
+}
+
+// AutoFormat automatically formats the document using LSP
+func (h *BufPane) AutoFormat() bool {
+	var err error
+	var edits []protocol.TextEdit
+
+	if h.Cursor.HasSelection() {
+		edits, err = h.Buf.Server.DocumentRangeFormat(h.Buf.AbsPath, protocol.Range{
+			Start: lsp.Position(h.Cursor.CurSelection[0].X, h.Cursor.CurSelection[0].Y),
+			End:   lsp.Position(h.Cursor.CurSelection[1].X, h.Cursor.CurSelection[1].Y),
+		}, protocol.FormattingOptions{
+			InsertSpaces: h.Buf.Settings["tabstospaces"].(bool),
+			TabSize:      h.Buf.Settings["tabsize"].(float64),
+		})
+	} else {
+		edits, err = h.Buf.Server.DocumentFormat(h.Buf.AbsPath, protocol.FormattingOptions{
+			InsertSpaces: h.Buf.Settings["tabstospaces"].(bool),
+			TabSize:      h.Buf.Settings["tabsize"].(float64),
+		})
+	}
+
+	if err != nil {
+		InfoBar.Error(err)
+		return false
+	}
+
+	h.Buf.ApplyEdits(edits)
+	return true
+}
+
 // None is an action that does nothing
 func (h *BufPane) None() bool {
 	return true

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

@@ -5,22 +5,36 @@ import (
 	"errors"
 	"io/ioutil"
 	"os"
+	"path/filepath"
+	"regexp"
 	"strings"
 	"unicode"
 
 	"github.com/zyedidia/json5"
-	"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"
 	"github.com/zyedidia/tcell"
 )
 
+var Binder = map[string]func(e Event, action string){
+	"info":     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 +48,87 @@ 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 := Binder[k]
+			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)
-	}
+	config.Bindings[event.Name()] = v
 
-	config.Bindings[k] = v
+	bind(event, 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
@@ -152,13 +219,31 @@ 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
 
-	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 +255,14 @@ 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 +279,7 @@ 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)
@@ -207,7 +292,8 @@ func UnbindKey(k string) error {
 	var e error
 	var parsed map[string]string
 
-	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 +305,13 @@ 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
@@ -233,10 +319,11 @@ func UnbindKey(k string) error {
 			}
 		}
 
-		defaults := DefaultBindings()
+		defaults := DefaultBindings("buffer")
 		if a, ok := defaults[k]; ok {
-			BindKey(k, a)
+			BindKey(k, a, Binder["buffer"])
 		} else if _, ok := config.Bindings[k]; ok {
+			BufUnmap(key)
 			delete(config.Bindings, k)
 		}
 

internal/action/bufpane.go

@@ -7,25 +7,34 @@ 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/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/tcell"
 )
 
 type BufKeyAction func(*BufPane) bool
 type BufMouseAction func(*BufPane, *tcell.EventMouse) bool
 
-var BufKeyBindings map[Event]BufKeyAction
-var BufKeyStrings map[Event]string
-var BufMouseBindings map[MouseEvent]BufMouseAction
+var BufBindings *KeyTree
+
+func BufKeyActionGeneral(a BufKeyAction) PaneKeyAction {
+	return func(p Pane) bool {
+		return a(p.(*BufPane))
+	}
+}
+
+func BufMouseActionGeneral(a BufMouseAction) PaneMouseAction {
+	return func(p Pane, me *tcell.EventMouse) bool {
+		return a(p.(*BufPane), me)
+	}
+}
 
 func init() {
-	BufKeyBindings = make(map[Event]BufKeyAction)
-	BufKeyStrings = make(map[Event]string)
-	BufMouseBindings = make(map[MouseEvent]BufMouseAction)
+	BufBindings = NewKeyTree()
 }
 
 func LuaAction(fn string) func(*BufPane) bool {
@@ -51,9 +60,17 @@ 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) {
+	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
@@ -103,39 +120,60 @@ func BufMapKey(k Event, action string) {
 			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
@@ -144,9 +182,13 @@ 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
@@ -176,7 +218,8 @@ type BufPane struct {
 	tripleClick bool
 
 	// Last search stores the last successful search for FindNext and FindPrev
-	lastSearch string
+	lastSearch      string
+	lastSearchRegex bool
 	// Should the current multiple cursor selection search based on word or
 	// based on selection (false for selection, true for word)
 	multiWord bool
@@ -267,13 +310,20 @@ func (h *BufPane) SetID(i uint64) {
 }
 
 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 {
@@ -308,7 +358,7 @@ 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:
@@ -333,10 +383,11 @@ 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
 			}
 		}
@@ -368,13 +419,26 @@ func (h *BufPane) HandleEvent(event tcell.Event) {
 	}
 }
 
+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 {
@@ -408,22 +472,34 @@ 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
@@ -452,6 +528,7 @@ func (h *BufPane) DoRuneInsert(r rune) {
 		if recording_macro {
 			curmacro = append(curmacro, r)
 		}
+		h.Relocate()
 		h.PluginCBRune("onRune", r)
 	}
 }
@@ -505,104 +582,115 @@ 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,
-	"SelectToStartOfText":    (*BufPane).SelectToStartOfText,
-	"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,
-	"CycleAutocompleteBack":  (*BufPane).CycleAutocompleteBack,
-	"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,
-	"StartOfText":            (*BufPane).StartOfText,
-	"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,
-	"SpawnMultiCursorUp":     (*BufPane).SpawnMultiCursorUp,
-	"SpawnMultiCursorDown":   (*BufPane).SpawnMultiCursorDown,
-	"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,
+	"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,
+	"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,
+	"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,
+	"SemanticInfo":              (*BufPane).SemanticInfo,
+	"AutoFormat":                (*BufPane).AutoFormat,
+	"None":                      (*BufPane).None,
 
 	// This was changed to InsertNewline but I don't want to break backwards compatibility
 	"InsertEnter": (*BufPane).InsertNewline,
@@ -619,53 +707,58 @@ 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,
-	"SelectToStartOfText": 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,
-	"StartOfText":         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

@@ -10,14 +10,14 @@ import (
 	"regexp"
 	"strconv"
 	"strings"
-	"unicode/utf8"
 
 	shellquote "github.com/kballard/go-shellquote"
-	"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/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
@@ -56,6 +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},
@@ -106,7 +107,7 @@ func (h *BufPane) PluginCmd(args []string) {
 	}
 
 	if h.Buf.Type != buffer.BTLog {
-		OpenLogBuf(h)
+		h.OpenLogBuf()
 	}
 
 	config.PluginCommand(buffer.LogBuf, args[0], args[1:])
@@ -155,6 +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 {
@@ -272,7 +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()
 	}
@@ -289,7 +340,10 @@ func ReloadConfig() {
 	if err != nil {
 		screen.TermMessage(err)
 	}
-	config.InitGlobalSettings()
+	err = config.InitGlobalSettings()
+	if err != nil {
+		screen.TermMessage(err)
+	}
 	InitBindings()
 	InitCommands()
 
@@ -427,6 +481,7 @@ func SetGlobalOptionNative(option string, nativeValue interface{}) error {
 
 	if !local {
 		config.GlobalSettings[option] = nativeValue
+		config.ModifiedSettings[option] = true
 
 		if option == "colorscheme" {
 			// LoadSyntaxFiles()
@@ -451,6 +506,12 @@ func SetGlobalOptionNative(option string, nativeValue interface{}) error {
 			}
 		} 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 {
 			for _, pl := range config.Plugins {
 				if option == pl.Name {
@@ -475,7 +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 {
@@ -580,7 +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[event.Name()]; ok {
 		InfoBar.Message(action)
 	} else {
 		InfoBar.Message(args[0], " has no binding")
@@ -651,8 +717,11 @@ 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)))
+			col = util.Clamp(col-1, 0, util.CharacterCount(h.Buf.LineBytes(line)))
 			h.Cursor.GotoLoc(buffer.Loc{col, line})
 		} else {
 			line, err := strconv.Atoi(args[0])
@@ -660,6 +729,9 @@ 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)
 			h.Cursor.GotoLoc(buffer.Loc{0, line})
 		}
@@ -732,23 +804,23 @@ 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, !noRegex)
 			if err != nil {
 				InfoBar.Error(err)
 				return
@@ -756,45 +828,58 @@ 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.Cursor.GotoLoc(locs[0])
+
+			h.Relocate()
 
 			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.X += util.CharacterCount(replace)
 				} 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
@@ -807,6 +892,11 @@ func (h *BufPane) ReplaceAllCmd(args []string) {
 func (h *BufPane) TermCmd(args []string) {
 	ps := h.tab.Panes
 
+	if !TermEmuSupported {
+		InfoBar.Error("Terminal emulator not supported on this system")
+		return
+	}
+
 	if len(args) == 0 {
 		sh := os.Getenv("SHELL")
 		if sh == "" {
@@ -818,7 +908,11 @@ func (h *BufPane) TermCmd(args []string) {
 
 	term := func(i int, newtab bool) {
 		t := new(shell.Terminal)
-		t.Start(args, false, true, nil, nil)
+		err := t.Start(args, false, true, nil, nil)
+		if err != nil {
+			InfoBar.Error(err)
+			return
+		}
 
 		id := h.ID()
 		if newtab {
@@ -830,7 +924,12 @@ func (h *BufPane) TermCmd(args []string) {
 		}
 
 		v := h.GetView()
-		MainTab().Panes[i] = NewTermPane(v.X, v.Y, v.Width, v.Height, t, id, MainTab())
+		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)
 	}
 

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 "info":
+		return infodefaults
+	case "buffer":
+		return bufdefaults
+	case "terminal":
+		return termdefaults
+	default:
+		return map[string]string{}
+	}
+}

internal/action/defaults_darwin.go

@@ -1,107 +1,179 @@
 package action
 
-// 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":       "StartOfText",
-		"CtrlRight":      "EndOfLine",
-		"CtrlShiftLeft":  "SelectToStartOfText",
-		"ShiftHome":      "SelectToStartOfText",
-		"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":        "CycleAutocompleteBack|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":           "StartOfText",
-		"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",
+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",
+	"Ctrl-n":         "FindNext",
+	"Ctrl-p":         "FindPrevious",
+	"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",
+	// 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",
+	// Integration with file managers
+	"F2":  "Save",
+	"F3":  "Find",
+	"F4":  "Quit",
+	"F7":  "Find",
+	"F10": "Quit",
+	"Esc": "Escape,Deselect,ClearInfo,RemoveAllMultiCursors",
 
-		// Mouse bindings
-		"MouseWheelUp":   "ScrollUp",
-		"MouseWheelDown": "ScrollDown",
-		"MouseLeft":      "MousePress",
-		"MouseMiddle":    "PastePrimary",
-		"Ctrl-MouseLeft": "MouseMultiCursor",
+	// 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",
-	}
+	"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

@@ -2,108 +2,181 @@
 
 package action
 
-// 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",
-		"CtrlLeft":       "WordLeft",
-		"CtrlRight":      "WordRight",
-		"AltUp":          "MoveLinesUp",
-		"AltDown":        "MoveLinesDown",
-		"CtrlShiftRight": "SelectWordRight",
-		"CtrlShiftLeft":  "SelectWordLeft",
-		"AltLeft":        "StartOfText",
-		"AltRight":       "EndOfLine",
-		"AltShiftLeft":   "SelectToStartOfText",
-		"ShiftHome":      "SelectToStartOfText",
-		"AltShiftRight":  "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":        "CycleAutocompleteBack|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":           "StartOfText",
-		"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",
+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",
+	"Ctrl-n":         "FindNext",
+	"Ctrl-p":         "FindPrevious",
+	"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",
+	"Alt-i":          "SemanticInfo",
+	"Insert":         "ToggleOverwriteMode",
 
-		// Emacs-style keybindings
-		"Alt-f": "WordRight",
-		"Alt-b": "WordLeft",
-		"Alt-a": "StartOfText",
-		"Alt-e": "EndOfLine",
-		// "Alt-p": "CursorUp",
-		// "Alt-n": "CursorDown",
+	// 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",
+	// Integration with file managers
+	"F2":  "Save",
+	"F3":  "Find",
+	"F4":  "Quit",
+	"F7":  "Find",
+	"F10": "Quit",
+	"Esc": "Escape,Deselect,ClearInfo,RemoveAllMultiCursors",
 
-		// Mouse bindings
-		"MouseWheelUp":   "ScrollUp",
-		"MouseWheelDown": "ScrollDown",
-		"MouseLeft":      "MousePress",
-		"MouseMiddle":    "PastePrimary",
-		"Ctrl-MouseLeft": "MouseMultiCursor",
+	// 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",
-	}
+	"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 (
+	"bytes"
+	"errors"
+	"fmt"
+	"strings"
+
 	"github.com/zyedidia/tcell"
 )
 
-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 +33,63 @@ type KeyEvent struct {
 	code tcell.Key
 	mod  tcell.ModMask
 	r    rune
+	any  bool
+}
+
+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 +99,54 @@ 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:  e.Modifiers(),
+			r:    e.Rune(),
+		}, nil
+	case *tcell.EventRaw:
+		return RawEvent{
+			esc: e.EscSeq(),
+		}, nil
+	case *tcell.EventMouse:
+		return MouseEvent{
+			btn: e.Buttons(),
+			mod: 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

@@ -1,19 +1,22 @@
 package action
 
-import "github.com/zyedidia/micro/internal/buffer"
+import "github.com/zyedidia/micro/v2/internal/buffer"
 
 var InfoBar *InfoPane
 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 {
@@ -28,7 +31,10 @@ func WriteLog(s string) {
 	}
 }
 
-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()
 

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
@@ -15,7 +15,7 @@ import (
 // for example with `vsplit filename`.
 
 // CommandComplete autocompletes commands
-func CommandComplete(b *buffer.Buffer) ([]string, []string) {
+func CommandComplete(b *buffer.Buffer) []buffer.Completion {
 	c := b.GetActiveCursor()
 	input, argstart := buffer.GetArg(b)
 
@@ -32,11 +32,11 @@ func CommandComplete(b *buffer.Buffer) ([]string, []string) {
 		completions[i] = util.SliceEndStr(suggestions[i], c.X-argstart)
 	}
 
-	return completions, suggestions
+	return buffer.ConvertCompletions(completions, suggestions, c)
 }
 
 // HelpComplete autocompletes help topics
-func HelpComplete(b *buffer.Buffer) ([]string, []string) {
+func HelpComplete(b *buffer.Buffer) []buffer.Completion {
 	c := b.GetActiveCursor()
 	input, argstart := buffer.GetArg(b)
 
@@ -54,7 +54,7 @@ func HelpComplete(b *buffer.Buffer) ([]string, []string) {
 	for i := range suggestions {
 		completions[i] = util.SliceEndStr(suggestions[i], c.X-argstart)
 	}
-	return completions, suggestions
+	return buffer.ConvertCompletions(completions, suggestions, c)
 }
 
 // colorschemeComplete tab-completes names of colorschemes.
@@ -87,7 +87,7 @@ func contains(s []string, e string) bool {
 }
 
 // OptionComplete autocompletes options
-func OptionComplete(b *buffer.Buffer) ([]string, []string) {
+func OptionComplete(b *buffer.Buffer) []buffer.Completion {
 	c := b.GetActiveCursor()
 	input, argstart := buffer.GetArg(b)
 
@@ -97,22 +97,17 @@ func OptionComplete(b *buffer.Buffer) ([]string, []string) {
 			suggestions = append(suggestions, option)
 		}
 	}
-	// for option := range localSettings {
-	// 	if strings.HasPrefix(option, input) && !contains(suggestions, option) {
-	// 		suggestions = append(suggestions, option)
-	// 	}
-	// }
 
 	sort.Strings(suggestions)
 	completions := make([]string, len(suggestions))
 	for i := range suggestions {
 		completions[i] = util.SliceEndStr(suggestions[i], c.X-argstart)
 	}
-	return completions, suggestions
+	return buffer.ConvertCompletions(completions, suggestions, c)
 }
 
 // OptionValueComplete completes values for various options
-func OptionValueComplete(b *buffer.Buffer) ([]string, []string) {
+func OptionValueComplete(b *buffer.Buffer) []buffer.Completion {
 	c := b.GetActiveCursor()
 	l := b.LineBytes(c.Y)
 	l = util.SliceStart(l, c.X)
@@ -128,12 +123,6 @@ func OptionValueComplete(b *buffer.Buffer) ([]string, []string) {
 				break
 			}
 		}
-		// for option := range localSettings {
-		// 	if option == string(args[len(args)-2]) {
-		// 		completeValue = true
-		// 		break
-		// 	}
-		// }
 	}
 	if !completeValue {
 		return OptionComplete(b)
@@ -150,11 +139,6 @@ func OptionValueComplete(b *buffer.Buffer) ([]string, []string) {
 			optionVal = option
 		}
 	}
-	// for k, option := range localSettings {
-	// 	if k == inputOpt {
-	// 		optionVal = option
-	// 	}
-	// }
 
 	switch optionVal.(type) {
 	case bool:
@@ -186,6 +170,16 @@ 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)
@@ -194,11 +188,11 @@ func OptionValueComplete(b *buffer.Buffer) ([]string, []string) {
 	for i := range suggestions {
 		completions[i] = util.SliceEndStr(suggestions[i], c.X-argstart)
 	}
-	return completions, suggestions
+	return buffer.ConvertCompletions(completions, suggestions, c)
 }
 
 // PluginCmdComplete autocompletes the plugin command
-func PluginCmdComplete(b *buffer.Buffer) ([]string, []string) {
+func PluginCmdComplete(b *buffer.Buffer) []buffer.Completion {
 	c := b.GetActiveCursor()
 	input, argstart := buffer.GetArg(b)
 
@@ -214,11 +208,11 @@ func PluginCmdComplete(b *buffer.Buffer) ([]string, []string) {
 	for i := range suggestions {
 		completions[i] = util.SliceEndStr(suggestions[i], c.X-argstart)
 	}
-	return completions, suggestions
+	return buffer.ConvertCompletions(completions, suggestions, c)
 }
 
 // PluginComplete completes values for the plugin command
-func PluginComplete(b *buffer.Buffer) ([]string, []string) {
+func PluginComplete(b *buffer.Buffer) []buffer.Completion {
 	c := b.GetActiveCursor()
 	l := b.LineBytes(c.Y)
 	l = util.SliceStart(l, c.X)
@@ -250,7 +244,7 @@ func PluginComplete(b *buffer.Buffer) ([]string, []string) {
 	for i := range suggestions {
 		completions[i] = util.SliceEndStr(suggestions[i], c.X-argstart)
 	}
-	return completions, suggestions
+	return buffer.ConvertCompletions(completions, suggestions, c)
 }
 
 // PluginNameComplete completes with the names of loaded plugins

internal/action/infopane.go

@@ -2,16 +2,57 @@ 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/micro/v2/internal/buffer"
+	"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"
 )
 
 type InfoKeyAction func(*InfoPane)
 
+var InfoBindings *KeyTree
+var InfoBufBindings *KeyTree
+
+func init() {
+	InfoBindings = NewKeyTree()
+	InfoBufBindings = NewKeyTree()
+}
+
+func InfoMapEvent(k Event, action string) {
+	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
@@ -21,6 +62,7 @@ func NewInfoPane(ib *info.InfoBuf, w display.BWindow, tab *Tab) *InfoPane {
 	ip := new(InfoPane)
 	ip.InfoBuf = ib
 	ip.BufPane = NewBufPane(ib.Buffer, w, tab)
+	ip.BufPane.bindings = InfoBufBindings
 
 	return ip
 }
@@ -68,110 +110,50 @@ func (h *InfoPane) HandleEvent(event tcell.Event) {
 				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.HasPrefix(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,
-	"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])
 }
 
 // Autocomplete begins autocompletion
-func (h *InfoPane) Autocomplete() {
+func (h *InfoPane) CommandComplete() {
 	b := h.Buf
 	if b.HasSuggestions {
 		b.CycleAutocomplete(true)
@@ -185,35 +167,37 @@ 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)
 	}
 }
 
-// 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,
+	"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"
+)
+
+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
+}
+
+// CurrentEventsStr 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

@@ -1,7 +1,7 @@
 package action
 
 import (
-	"github.com/zyedidia/micro/internal/display"
+	"github.com/zyedidia/micro/v2/internal/display"
 )
 
 type Pane interface {

internal/action/rawpane.go

@@ -4,8 +4,8 @@ import (
 	"fmt"
 	"reflect"
 
-	"github.com/zyedidia/micro/internal/buffer"
-	"github.com/zyedidia/micro/internal/display"
+	"github.com/zyedidia/micro/v2/internal/buffer"
+	"github.com/zyedidia/micro/v2/internal/display"
 	"github.com/zyedidia/tcell"
 )
 
@@ -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

@@ -1,11 +1,11 @@
 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/micro/v2/internal/buffer"
+	"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/views"
 	"github.com/zyedidia/tcell"
 )
 
@@ -104,6 +104,13 @@ 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 {
@@ -159,6 +166,8 @@ 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
@@ -166,6 +175,7 @@ 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, t)
 	e.SetID(t.ID())
@@ -178,6 +188,7 @@ 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())
 
@@ -196,6 +207,8 @@ func (t *Tab) HandleEvent(event tcell.Event) {
 		mx, my := e.Position()
 		switch e.Buttons() {
 		case tcell.Button1:
+			wasReleased := t.release
+			t.release = false
 			if t.resizing != nil {
 				var size int
 				if t.resizing.Kind == views.STVert {
@@ -208,22 +221,24 @@ func (t *Tab) HandleEvent(event tcell.Event) {
 				return
 			}
 
-			resizeID := t.GetMouseSplitID(buffer.Loc{mx, my})
-			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()

internal/action/terminal_supported.go

@@ -4,7 +4,7 @@ package action
 
 import (
 	shellquote "github.com/kballard/go-shellquote"
-	"github.com/zyedidia/micro/internal/shell"
+	"github.com/zyedidia/micro/v2/internal/shell"
 )
 
 // TermEmuSupported is a constant that marks if the terminal emulator is supported
@@ -24,13 +24,21 @@ func RunTermEmulator(h *BufPane, input string, wait bool, getOutput bool, callba
 	}
 
 	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, MainTab())
+
+	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/termpane.go

@@ -1,16 +1,52 @@
 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/micro/v2/internal/clipboard"
+	"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"
 	"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) {
+	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
@@ -20,14 +56,18 @@ type TermPane struct {
 	tab           *Tab
 }
 
-func NewTermPane(x, y, w, h int, t *shell.Terminal, id uint64, tab *Tab) *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)
 	th.tab = tab
-	return th
+	return th, nil
 }
 
 func (t *TermPane) ID() uint64 {
@@ -48,6 +88,7 @@ func (t *TermPane) Tab() *Tab {
 
 func (t *TermPane) Close() {}
 
+// Quit closes this termpane
 func (t *TermPane) Quit() {
 	t.Close()
 	if len(MainTab().Panes) > 1 {
@@ -61,6 +102,7 @@ func (t *TermPane) Quit() {
 	}
 }
 
+// Unsplit removes this split
 func (t *TermPane) Unsplit() {
 	n := MainTab().GetNode(t.id)
 	n.Unsplit()
@@ -76,6 +118,26 @@ 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:  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:
@@ -85,7 +147,7 @@ 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())
@@ -129,6 +191,41 @@ 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 +6,10 @@ import (
 	"os"
 	"sort"
 	"strings"
-	"unicode/utf8"
 
-	"github.com/zyedidia/micro/internal/util"
+	"github.com/zyedidia/micro/v2/internal/lsp"
+	"github.com/zyedidia/micro/v2/internal/util"
+	"go.lsp.dev/protocol"
 )
 
 // A Completer is a function that takes a buffer and returns info
@@ -18,49 +19,61 @@ import (
 // the current cursor location if selected as well as a list of
 // suggestion names which can be displayed in an autocomplete box or
 // other UI element
-type Completer func(*Buffer) ([]string, []string)
-
-func (b *Buffer) GetSuggestions() {
+type Completer func(*Buffer) []Completion
 
+type Completion struct {
+	Edits       []Delta
+	Label       string
+	CommitChars []rune
+	Kind        string
+	Filter      string
+	Detail      string
+	Doc         string
 }
 
 // Autocomplete starts the autocomplete process
 func (b *Buffer) Autocomplete(c Completer) bool {
-	b.Completions, b.Suggestions = c(b)
-	if len(b.Completions) != len(b.Suggestions) || len(b.Completions) == 0 {
+	b.Completions = c(b)
+	if len(b.Completions) == 0 {
 		return false
 	}
-	b.CurSuggestion = -1
+	b.CurCompletion = -1
 	b.CycleAutocomplete(true)
 	return true
 }
 
 // CycleAutocomplete moves to the next suggestion
 func (b *Buffer) CycleAutocomplete(forward bool) {
-	prevSuggestion := b.CurSuggestion
+	prevCompletion := b.CurCompletion
 
 	if forward {
-		b.CurSuggestion++
+		b.CurCompletion++
 	} else {
-		b.CurSuggestion--
+		b.CurCompletion--
 	}
-	if b.CurSuggestion >= len(b.Suggestions) {
-		b.CurSuggestion = 0
-	} else if b.CurSuggestion < 0 {
-		b.CurSuggestion = len(b.Suggestions) - 1
+	if b.CurCompletion >= len(b.Completions) {
+		b.CurCompletion = 0
+	} else if b.CurCompletion < 0 {
+		b.CurCompletion = len(b.Completions) - 1
 	}
 
-	c := b.GetActiveCursor()
-	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)
+	// undo prev completion
+	if prevCompletion != -1 {
+		prev := b.Completions[prevCompletion]
+		for i := 0; i < len(prev.Edits); i++ {
+			if len(prev.Edits[i].Text) != 0 {
+				b.UndoOneEvent()
+			}
+			if !prev.Edits[i].Start.Equal(prev.Edits[i].End) {
+				b.UndoOneEvent()
+			}
+		}
 	}
 
-	b.Replace(start, end, b.Completions[b.CurSuggestion])
-	if len(b.Suggestions) > 1 {
+	// apply current completion
+	comp := b.Completions[b.CurCompletion]
+	b.ApplyDeltas(comp.Edits)
+	if len(b.Completions) > 1 {
 		b.HasSuggestions = true
 	}
 }
@@ -82,7 +95,7 @@ func GetWord(b *Buffer) ([]byte, int) {
 
 	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)
@@ -98,14 +111,14 @@ 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
 }
 
 // FileComplete autocompletes filenames
-func FileComplete(b *Buffer) ([]string, []string) {
+func FileComplete(b *Buffer) []Completion {
 	c := b.GetActiveCursor()
 	input, argstart := GetArg(b)
 
@@ -124,7 +137,7 @@ func FileComplete(b *Buffer) ([]string, []string) {
 	}
 
 	if err != nil {
-		return nil, nil
+		return nil
 	}
 
 	var suggestions []string
@@ -150,19 +163,19 @@ func FileComplete(b *Buffer) ([]string, []string) {
 		completions[i] = util.SliceEndStr(complete, c.X-argstart)
 	}
 
-	return completions, suggestions
+	return ConvertCompletions(completions, suggestions, c)
 }
 
 // BufferComplete autocompletes based on previous words in the buffer
-func BufferComplete(b *Buffer) ([]string, []string) {
+func BufferComplete(b *Buffer) []Completion {
 	c := b.GetActiveCursor()
 	input, argstart := GetWord(b)
 
 	if argstart == -1 {
-		return []string{}, []string{}
+		return nil
 	}
 
-	inputLen := utf8.RuneCount(input)
+	inputLen := util.CharacterCount(input)
 
 	suggestionsSet := make(map[string]struct{})
 
@@ -171,7 +184,7 @@ 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 +197,7 @@ 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{}{}
@@ -202,5 +215,97 @@ func BufferComplete(b *Buffer) ([]string, []string) {
 		completions[i] = util.SliceEndStr(suggestions[i], c.X-argstart)
 	}
 
-	return completions, suggestions
+	return ConvertCompletions(completions, suggestions, c)
+}
+
+func LSPComplete(b *Buffer) []Completion {
+	if !b.HasLSP() {
+		return nil
+	}
+
+	c := b.GetActiveCursor()
+	pos := lsp.Position(c.X, c.Y)
+	items, err := b.Server.Completion(b.AbsPath, pos)
+	if err != nil {
+		return nil
+	}
+
+	completions := make([]Completion, len(items))
+
+	for i, item := range items {
+		completions[i] = Completion{
+			Label:  item.Label,
+			Detail: item.Detail,
+			Kind:   toKindStr(item.Kind),
+			Doc:    getDoc(item.Documentation),
+		}
+
+		if item.TextEdit != nil && len(item.TextEdit.NewText) > 0 {
+			completions[i].Edits = []Delta{Delta{
+				Text:  []byte(item.TextEdit.NewText),
+				Start: toLoc(item.TextEdit.Range.Start),
+				End:   toLoc(item.TextEdit.Range.End),
+			}}
+			// for _, e := range item.AdditionalTextEdits {
+			// 	d := Delta{
+			// 		Text:  []byte(e.NewText),
+			// 		Start: toLoc(e.Range.Start),
+			// 		End:   toLoc(e.Range.End),
+			// 	}
+			// 	completions[i].Edits = append(completions[i].Edits, d)
+			// }
+		} else {
+			var t string
+			if len(item.InsertText) > 0 {
+				t = item.InsertText
+			} else {
+				t = item.Label
+			}
+			_, argstart := GetWord(b)
+			str := util.SliceEnd([]byte(t), c.X-argstart)
+			completions[i].Edits = []Delta{Delta{
+				Text:  str,
+				Start: Loc{c.X, c.Y},
+				End:   Loc{c.X, c.Y},
+			}}
+		}
+	}
+
+	return completions
+}
+
+// ConvertCompletions converts a list of insert text with suggestion labels
+// to an array of completion objects ready for autocompletion
+func ConvertCompletions(completions, suggestions []string, c *Cursor) []Completion {
+	comp := make([]Completion, len(completions))
+
+	for i := 0; i < len(completions); i++ {
+		comp[i] = Completion{
+			Label: suggestions[i],
+		}
+		comp[i].Edits = []Delta{Delta{
+			Text:  []byte(completions[i]),
+			Start: Loc{c.X, c.Y},
+			End:   Loc{c.X, c.Y},
+		}}
+	}
+	return comp
+}
+
+func toKindStr(k protocol.CompletionItemKind) string {
+	s := k.String()
+	return strings.ToLower(string(s[0]))
+}
+
+// returns documentation from a string | MarkupContent item
+func getDoc(documentation interface{}) string {
+	var doc string
+	switch s := documentation.(type) {
+	case string:
+		doc = s
+	case protocol.MarkupContent:
+		doc = s.Value
+	}
+
+	return strings.Split(doc, "\n")[0]
 }

internal/buffer/backup.go

@@ -4,11 +4,12 @@ import (
 	"fmt"
 	"io"
 	"os"
+	"path/filepath"
 	"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"
 )
 
@@ -27,29 +28,53 @@ The backup was created on %s, and the file is
 
 Options: [r]ecover, [i]gnore: `
 
+var backupRequestChan chan *Buffer
+
+func backupThread() {
+	for {
+		time.Sleep(time.Second * 8)
+
+		for len(backupRequestChan) > 0 {
+			b := <-backupRequestChan
+			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 {
+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 len(backupdir) == 0 || 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
 		}
@@ -73,23 +98,25 @@ 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 == "" || b.Type != BTDefault {
+	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 && b.Type == BTDefault {
-		backupfile := config.ConfigDir + "/backups/" + util.EscapePath(b.AbsPath)
+	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 {

internal/buffer/buffer.go

@@ -1,30 +1,35 @@
 package buffer
 
 import (
+	"bufio"
 	"bytes"
 	"crypto/md5"
 	"errors"
+	"fmt"
 	"io"
 	"io/ioutil"
-	"log"
 	"os"
+	"path"
+	gopath "path"
 	"path/filepath"
+	"sort"
 	"strconv"
 	"strings"
 	"sync"
 	"time"
-	"unicode/utf8"
 
-	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/internal/util"
-	"github.com/zyedidia/micro/pkg/highlight"
+	dmp "github.com/sergi/go-diff/diffmatchpatch"
+	"github.com/zyedidia/micro/v2/internal/config"
+	"github.com/zyedidia/micro/v2/internal/lsp"
+	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/micro/v2/pkg/highlight"
+	lspt "go.lsp.dev/protocol"
 	"golang.org/x/text/encoding/htmlindex"
 	"golang.org/x/text/encoding/unicode"
 	"golang.org/x/text/transform"
+	luar "layeh.com/gopher-luar"
 )
 
 const backupTime = 8000
@@ -58,6 +63,9 @@ var (
 	BTRaw = BufType{4, false, true, false}
 	// BTInfo is a buffer for inputting information
 	BTInfo = BufType{5, false, true, false}
+	// BTStdout is a buffer that only writes to stdout
+	// when closed
+	BTStdout = BufType{6, false, true, true}
 
 	// ErrFileTooLarge is returned when the file is too large to hash
 	// (fastdirty is automatically enabled)
@@ -73,13 +81,53 @@ type SharedBuffer struct {
 	// Type of the buffer (e.g. help, raw, scratch etc..)
 	Type BufType
 
+	// Path to the file on disk
+	Path string
+	// Absolute path to the file on disk
+	AbsPath string
+	// Name of the buffer on the status line
+	name string
+
+	toStdout bool
+
+	// Settings customized by the user
+	Settings map[string]interface{}
+
+	Completions   []Completion
+	CurCompletion int
+
+	Messages []*Message
+
+	updateDiffTimer   *time.Timer
+	diffBase          []byte
+	diffBaseLineCount int
+	diffLock          sync.RWMutex
+	diff              map[int]DiffStatus
+
+	requestedBackup bool
+
+	// ReloadDisabled allows the user to disable reloads if they
+	// are viewing a file that is constantly changing
+	ReloadDisabled bool
+
 	isModified bool
 	// Whether or not suggestions can be autocompleted must be shared because
 	// it changes based on how the buffer has changed
 	HasSuggestions bool
 
-	// Modifications is the list of modified regions for syntax highlighting
-	Modifications []Loc
+	// The Highlighter struct actually performs the highlighting
+	Highlighter *highlight.Highlighter
+	// SyntaxDef represents the syntax highlighting definition being used
+	// This stores the highlighting rules and filetype detection info
+	SyntaxDef *highlight.Def
+
+	ModifiedThisFrame bool
+
+	// Hash of the original buffer -- empty if fastdirty is on
+	origHash [md5.Size]byte
+
+	Server  *lsp.Server
+	version uint64
 }
 
 func (b *SharedBuffer) insert(pos Loc, value []byte) {
@@ -87,17 +135,74 @@ func (b *SharedBuffer) insert(pos Loc, value []byte) {
 	b.HasSuggestions = false
 	b.LineArray.insert(pos, value)
 
-	// b.Modifications is cleared every screen redraw so it's
-	// ok to append duplicates
-	b.Modifications = append(b.Modifications, Loc{pos.Y, pos.Y + bytes.Count(value, []byte{'\n'})})
+	inslines := bytes.Count(value, []byte{'\n'})
+	b.MarkModified(pos.Y, pos.Y+inslines)
+
+	b.lspDidChange(pos, pos, string(value))
 }
 func (b *SharedBuffer) remove(start, end Loc) []byte {
 	b.isModified = true
 	b.HasSuggestions = false
-	b.Modifications = append(b.Modifications, Loc{start.Y, start.Y})
-	return b.LineArray.remove(start, end)
+	defer b.MarkModified(start.Y, end.Y)
+	sub := b.LineArray.remove(start, end)
+	b.lspDidChange(start, end, "")
+	return sub
 }
 
+func (b *SharedBuffer) lspDidChange(start, end Loc, text string) {
+	b.version++
+	// TODO: convert to UTF16 codepoints
+	change := lspt.TextDocumentContentChangeEvent{
+		Range: &lspt.Range{
+			Start: lsp.Position(start.X, start.Y),
+			End:   lsp.Position(end.X, end.Y),
+		},
+		Text: text,
+	}
+
+	if b.HasLSP() {
+		b.Server.DidChange(b.AbsPath, b.version, []lspt.TextDocumentContentChangeEvent{change})
+	}
+}
+
+// HasLSP returns whether this buffer is communicating with an LSP server
+func (b *SharedBuffer) HasLSP() bool {
+	return b.Server != nil && b.Server.Active
+}
+
+// MarkModified marks the buffer as modified for this frame
+// and performs rehighlighting if syntax highlighting is enabled
+func (b *SharedBuffer) MarkModified(start, end int) {
+	b.ModifiedThisFrame = true
+
+	if !b.Settings["syntax"].(bool) || b.SyntaxDef == nil {
+		return
+	}
+
+	start = util.Clamp(start, 0, len(b.lines)-1)
+	end = util.Clamp(end, 0, len(b.lines)-1)
+
+	l := -1
+	for i := start; i <= end; i++ {
+		l = util.Max(b.Highlighter.ReHighlightStates(b, i), l)
+	}
+	b.Highlighter.HighlightMatches(b, start, l)
+}
+
+// DisableReload disables future reloads of this sharedbuffer
+func (b *SharedBuffer) DisableReload() {
+	b.ReloadDisabled = true
+}
+
+const (
+	DSUnchanged    = 0
+	DSAdded        = 1
+	DSModified     = 2
+	DSDeletedAbove = 3
+)
+
+type DiffStatus byte
+
 // Buffer stores the main information about a currently open file including
 // the actual text (in a LineArray), the undo/redo stack (in an EventHandler)
 // all the cursors, the syntax highlighting info, the settings for the buffer
@@ -112,45 +217,24 @@ type Buffer struct {
 	cursors     []*Cursor
 	curCursor   int
 	StartCursor Loc
-
-	// Path to the file on disk
-	Path string
-	// Absolute path to the file on disk
-	AbsPath string
-	// Name of the buffer on the status line
-	name string
-
-	// SyntaxDef represents the syntax highlighting definition being used
-	// This stores the highlighting rules and filetype detection info
-	SyntaxDef *highlight.Def
-	// The Highlighter struct actually performs the highlighting
-	Highlighter   *highlight.Highlighter
-	HighlightLock sync.Mutex
-
-	// Hash of the original buffer -- empty if fastdirty is on
-	origHash [md5.Size]byte
-
-	// Settings customized by the user
-	Settings map[string]interface{}
-
-	Suggestions   []string
-	Completions   []string
-	CurSuggestion int
-
-	Messages []*Message
-
-	// counts the number of edits
-	// resets every backupTime edits
-	lastbackup time.Time
 }
 
-// NewBufferFromFile opens a new buffer using the given path
-// It will also automatically handle `~`, and line/column with filename:l:c
-// It will return an empty buffer if the path does not exist
-// and an error if the file is a directory
-func NewBufferFromFile(path string, btype BufType) (*Buffer, error) {
+// NewBufferFromFileAtLoc opens a new buffer with a given cursor location
+// If cursorLoc is {-1, -1} the location does not overwrite what the cursor location
+// would otherwise be (start of file, or saved cursor position if `savecursor` is
+// enabled)
+func NewBufferFromFileAtLoc(path string, btype BufType, cursorLoc Loc) (*Buffer, error) {
 	var err error
-	filename, cursorPos := util.GetPathAndCursorPosition(path)
+	filename := path
+	if config.GetGlobalOption("parsecursor").(bool) && cursorLoc.X == -1 && cursorLoc.Y == -1 {
+		var cursorPos []string
+		filename, cursorPos = util.GetPathAndCursorPosition(filename)
+		cursorLoc, err = ParseCursorLocation(cursorPos)
+		if err != nil {
+			cursorLoc = Loc{-1, -1}
+		}
+	}
+
 	filename, err = util.ReplaceHome(filename)
 	if err != nil {
 		return nil, err
@@ -165,11 +249,6 @@ func NewBufferFromFile(path string, btype BufType) (*Buffer, error) {
 
 	defer file.Close()
 
-	cursorLoc, cursorerr := ParseCursorLocation(cursorPos)
-	if cursorerr != nil {
-		cursorLoc = Loc{-1, -1}
-	}
-
 	var buf *Buffer
 	if err != nil {
 		// File does not exist -- create an empty buffer with that name
@@ -181,6 +260,19 @@ func NewBufferFromFile(path string, btype BufType) (*Buffer, error) {
 	return buf, nil
 }
 
+// NewBufferFromFile opens a new buffer using the given path
+// It will also automatically handle `~`, and line/column with filename:l:c
+// It will return an empty buffer if the path does not exist
+// and an error if the file is a directory
+func NewBufferFromFile(path string, btype BufType) (*Buffer, error) {
+	return NewBufferFromFileAtLoc(path, btype, Loc{-1, -1})
+}
+
+// NewBufferFromStringAtLoc creates a new buffer containing the given string with a cursor loc
+func NewBufferFromStringAtLoc(text, path string, btype BufType, cursorLoc Loc) *Buffer {
+	return NewBuffer(strings.NewReader(text), int64(len(text)), path, cursorLoc, btype)
+}
+
 // NewBufferFromString creates a new buffer containing the given string
 func NewBufferFromString(text, path string, btype BufType) *Buffer {
 	return NewBuffer(strings.NewReader(text), int64(len(text)), path, Loc{-1, -1}, btype)
@@ -196,22 +288,6 @@ func NewBuffer(r io.Reader, size int64, path string, startcursor Loc, btype BufT
 
 	b := new(Buffer)
 
-	b.Settings = config.DefaultCommonSettings()
-	for k, v := range config.GlobalSettings {
-		if _, ok := b.Settings[k]; ok {
-			b.Settings[k] = v
-		}
-	}
-	config.InitLocalSettings(b.Settings, path)
-
-	enc, err := htmlindex.Get(b.Settings["encoding"].(string))
-	if err != nil {
-		enc = unicode.UTF8
-		b.Settings["encoding"] = "utf-8"
-	}
-
-	reader := transform.NewReader(r, enc.NewDecoder())
-
 	found := false
 	if len(path) > 0 {
 		for _, buf := range OpenBuffers {
@@ -223,28 +299,59 @@ func NewBuffer(r io.Reader, size int64, path string, startcursor Loc, btype BufT
 		}
 	}
 
-	b.Path = path
-	b.AbsPath = absPath
-
+	hasBackup := false
 	if !found {
 		b.SharedBuffer = new(SharedBuffer)
 		b.Type = btype
 
-		hasBackup := b.ApplyBackup(size)
+		b.AbsPath = absPath
+		b.Path = path
+
+		b.Settings = config.DefaultCommonSettings()
+		for k, v := range config.GlobalSettings {
+			if _, ok := config.DefaultGlobalOnlySettings[k]; !ok {
+				// make sure setting is not global-only
+				b.Settings[k] = v
+			}
+		}
+		config.InitLocalSettings(b.Settings, path)
+
+		enc, err := htmlindex.Get(b.Settings["encoding"].(string))
+		if err != nil {
+			enc = unicode.UTF8
+			b.Settings["encoding"] = "utf-8"
+		}
+
+		hasBackup = b.ApplyBackup(size)
 
 		if !hasBackup {
-			b.LineArray = NewLineArray(uint64(size), FFAuto, reader)
+			reader := bufio.NewReader(transform.NewReader(r, enc.NewDecoder()))
+
+			var ff FileFormat = FFAuto
+
+			if size == 0 {
+				// for empty files, use the fileformat setting instead of
+				// autodetection
+				switch b.Settings["fileformat"] {
+				case "unix":
+					ff = FFUnix
+				case "dos":
+					ff = FFDos
+				}
+			}
+
+			b.LineArray = NewLineArray(uint64(size), ff, reader)
 		}
 		b.EventHandler = NewEventHandler(b.SharedBuffer, b.cursors)
+
+		// The last time this file was modified
+		b.UpdateModTime()
 	}
 
 	if b.Settings["readonly"].(bool) && b.Type == BTDefault {
 		b.Type.Readonly = true
 	}
 
-	// The last time this file was modified
-	b.UpdateModTime()
-
 	switch b.Endings {
 	case FFUnix:
 		b.Settings["fileformat"] = "unix"
@@ -253,10 +360,11 @@ func NewBuffer(r io.Reader, size int64, path string, startcursor Loc, btype BufT
 	}
 
 	b.UpdateRules()
+	// init local settings again now that we know the filetype
 	config.InitLocalSettings(b.Settings, b.Path)
 
-	if _, err := os.Stat(config.ConfigDir + "/buffers/"); os.IsNotExist(err) {
-		os.Mkdir(config.ConfigDir+"/buffers/", os.ModePerm)
+	if _, err := os.Stat(filepath.Join(config.ConfigDir, "buffers")); os.IsNotExist(err) {
+		os.Mkdir(filepath.Join(config.ConfigDir, "buffers"), os.ModePerm)
 	}
 
 	if startcursor.X != -1 && startcursor.Y != -1 {
@@ -273,27 +381,58 @@ func NewBuffer(r io.Reader, size int64, path string, startcursor Loc, btype BufT
 	b.AddCursor(NewCursor(b, b.StartCursor))
 	b.GetActiveCursor().Relocate()
 
-	if !b.Settings["fastdirty"].(bool) {
+	if !b.Settings["fastdirty"].(bool) && !found {
 		if size > LargeFileThreshold {
 			// If the file is larger than LargeFileThreshold fastdirty needs to be on
 			b.Settings["fastdirty"] = true
-		} else {
+		} else if !hasBackup {
+			// since applying a backup does not save the applied backup to disk, we should
+			// not calculate the original hash based on the backup data
 			calcHash(b, &b.origHash)
 		}
 	}
 
-	err = config.RunPluginFn("onBufferOpen", luar.New(ulua.L, b))
+	err := config.RunPluginFn("onBufferOpen", luar.New(ulua.L, b))
 	if err != nil {
 		screen.TermMessage(err)
 	}
 
-	b.Modifications = make([]Loc, 0, 10)
-
 	OpenBuffers = append(OpenBuffers, b)
 
+	if !found {
+		if btype == BTDefault && b.Settings["lsp"].(bool) {
+			b.lspInit()
+		}
+	}
+
 	return b
 }
 
+// initializes an LSP server if possible, or calls didOpen on an existing
+// LSP server in this workspace
+func (b *Buffer) lspInit() {
+	ft := lsp.Filetype(b.Settings["filetype"].(string))
+	l, ok := lsp.GetLanguage(ft)
+	if ok && l.Installed() {
+		b.Server = lsp.GetServer(l, gopath.Dir(b.AbsPath))
+		if b.Server == nil {
+			var err error
+			b.Server, err = lsp.StartServer(l)
+			if err == nil {
+				d, _ := os.Getwd()
+				b.Server.Initialize(d)
+			}
+		}
+		if b.HasLSP() {
+			bytes := b.Bytes()
+			if len(bytes) == 0 {
+				bytes = []byte{'\n'}
+			}
+			b.Server.DidOpen(b.AbsPath, ft, string(bytes), b.version)
+		}
+	}
+}
+
 // Close removes this buffer from the list of open buffers
 func (b *Buffer) Close() {
 	for i, buf := range OpenBuffers {
@@ -314,18 +453,30 @@ func (b *Buffer) Fini() {
 		b.Serialize()
 	}
 	b.RemoveBackup()
+
+	if b.Type == BTStdout {
+		fmt.Fprint(util.Stdout, string(b.Bytes()))
+	}
+
+	if b.HasLSP() {
+		b.Server.DidClose(b.AbsPath)
+	}
 }
 
 // GetName returns the name that should be displayed in the statusline
 // for this buffer
 func (b *Buffer) GetName() string {
-	if b.name == "" {
+	name := b.name
+	if name == "" {
 		if b.Path == "" {
 			return "No name"
 		}
-		return b.Path
+		name = b.Path
 	}
-	return b.name
+	if b.Settings["basename"].(bool) {
+		return path.Base(name)
+	}
+	return name
 }
 
 //SetName changes the name for this buffer
@@ -340,7 +491,8 @@ func (b *Buffer) Insert(start Loc, text string) {
 		b.EventHandler.active = b.curCursor
 		b.EventHandler.Insert(start, text)
 
-		go b.Backup(true)
+		b.RequestBackup()
+		b.RelocateCursors()
 	}
 }
 
@@ -351,18 +503,70 @@ func (b *Buffer) Remove(start, end Loc) {
 		b.EventHandler.active = b.curCursor
 		b.EventHandler.Remove(start, end)
 
-		go b.Backup(true)
+		b.RequestBackup()
+		b.RelocateCursors()
 	}
 }
 
-// ClearModifications clears the list of modified lines in this buffer
-// The list of modified lines is used for syntax highlighting so that
-// we can selectively highlight only the necessary lines
-// This function should be called every time this buffer is drawn to
-// the screen
-func (b *Buffer) ClearModifications() {
-	// clear slice without resetting the cap
-	b.Modifications = b.Modifications[:0]
+// ApplyEdit performs a LSP text edit on the buffer
+func (b *Buffer) ApplyEdit(e lspt.TextEdit) {
+	if len(e.NewText) == 0 {
+		// deletion
+		b.Remove(toLoc(e.Range.Start), toLoc(e.Range.End))
+	} else {
+		// insert/replace
+		b.Replace(toLoc(e.Range.Start), toLoc(e.Range.End), e.NewText)
+	}
+}
+
+func (b *Buffer) ApplyEdits(edits []lspt.TextEdit) {
+	if !b.Type.Readonly {
+		locs := make([]struct {
+			t          string
+			start, end Loc
+		}, len(edits))
+		for i, e := range edits {
+			locs[i] = struct {
+				t          string
+				start, end Loc
+			}{
+				t:     e.NewText,
+				start: toLoc(e.Range.Start),
+				end:   toLoc(e.Range.End),
+			}
+		}
+		// Since edit ranges are guaranteed by LSP to never overlap we can sort
+		// by last edit first and apply each edit in order
+		// Perhaps in the future we should make this more robust to a non-conforming
+		// server that sends overlapping ranges
+		sort.Slice(locs, func(i, j int) bool {
+			return locs[i].start.GreaterThan(locs[j].start)
+		})
+		for _, d := range locs {
+			if len(d.t) == 0 {
+				b.Remove(d.start, d.end)
+			} else {
+				b.Replace(d.start, d.end, d.t)
+			}
+		}
+		b.RelocateCursors()
+	}
+}
+
+func (b *Buffer) ApplyDeltas(deltas []Delta) {
+	if !b.Type.Readonly {
+		sort.Slice(deltas, func(i, j int) bool {
+			return deltas[i].Start.GreaterThan(deltas[j].Start)
+		})
+		for _, d := range deltas {
+			if len(d.Text) == 0 {
+				b.Remove(d.Start, d.End)
+			} else {
+				b.ReplaceBytes(d.Start, d.End, d.Text)
+			}
+		}
+		b.RelocateCursors()
+	}
 }
 
 // FileType returns the buffer's filetype
@@ -398,7 +602,7 @@ func (b *Buffer) ReOpen() error {
 		return err
 	}
 
-	reader := transform.NewReader(file, enc.NewDecoder())
+	reader := bufio.NewReader(transform.NewReader(file, enc.NewDecoder()))
 	data, err := ioutil.ReadAll(reader)
 	txt := string(data)
 
@@ -408,6 +612,9 @@ func (b *Buffer) ReOpen() error {
 	b.EventHandler.ApplyDiff(txt)
 
 	err = b.UpdateModTime()
+	if !b.Settings["fastdirty"].(bool) {
+		calcHash(b, &b.origHash)
+	}
 	b.isModified = false
 	b.RelocateCursors()
 	return err
@@ -426,7 +633,7 @@ func (b *Buffer) RuneAt(loc Loc) rune {
 	if len(line) > 0 {
 		i := 0
 		for len(line) > 0 {
-			r, size := utf8.DecodeRune(line)
+			r, _, size := util.DecodeCharacter(line)
 			line = line[size:]
 			i++
 
@@ -455,6 +662,22 @@ func (b *Buffer) Modified() bool {
 	return buff != b.origHash
 }
 
+// Size returns the number of bytes in the current buffer
+func (b *Buffer) Size() int {
+	nb := 0
+	for i := 0; i < b.LinesNum(); i++ {
+		nb += len(b.LineBytes(i))
+
+		if i != b.LinesNum()-1 {
+			if b.Endings == FFDos {
+				nb++ // carriage return
+			}
+			nb++ // newline
+		}
+	}
+	return nb
+}
+
 // calcHash calculates md5 hash of all lines in the buffer
 func calcHash(b *Buffer, out *[md5.Size]byte) error {
 	h := md5.New()
@@ -500,7 +723,37 @@ func (b *Buffer) UpdateRules() {
 		return
 	}
 	syntaxFile := ""
+	foundDef := false
 	var header *highlight.Header
+	// search for the syntax file in the user's custom syntax files
+	for _, f := range config.ListRealRuntimeFiles(config.RTSyntax) {
+		data, err := f.Data()
+		if err != nil {
+			screen.TermMessage("Error loading syntax file " + f.Name() + ": " + err.Error())
+			continue
+		}
+
+		header, err = highlight.MakeHeaderYaml(data)
+		file, err := highlight.ParseFile(data)
+		if err != nil {
+			screen.TermMessage("Error parsing syntax file " + f.Name() + ": " + err.Error())
+			continue
+		}
+
+		if ((ft == "unknown" || ft == "") && highlight.MatchFiletype(header.FtDetect, b.Path, b.lines[0].data)) || header.FileType == ft {
+			syndef, err := highlight.ParseDef(file, header)
+			if err != nil {
+				screen.TermMessage("Error parsing syntax file " + f.Name() + ": " + err.Error())
+				continue
+			}
+			b.SyntaxDef = syndef
+			syntaxFile = f.Name()
+			foundDef = true
+			break
+		}
+	}
+
+	// search in the default syntax files
 	for _, f := range config.ListRuntimeFiles(config.RTSyntaxHeader) {
 		data, err := f.Data()
 		if err != nil {
@@ -525,34 +778,8 @@ func (b *Buffer) UpdateRules() {
 		}
 	}
 
-	if syntaxFile == "" {
-		// search for the syntax file in the user's custom syntax files
-		for _, f := range config.ListRealRuntimeFiles(config.RTSyntax) {
-			log.Println("real runtime file", f.Name())
-			data, err := f.Data()
-			if err != nil {
-				screen.TermMessage("Error loading syntax file " + f.Name() + ": " + err.Error())
-				continue
-			}
-
-			header, err = highlight.MakeHeaderYaml(data)
-			file, err := highlight.ParseFile(data)
-			if err != nil {
-				screen.TermMessage("Error parsing syntax file " + f.Name() + ": " + err.Error())
-				continue
-			}
-
-			if ((ft == "unknown" || ft == "") && highlight.MatchFiletype(header.FtDetect, b.Path, b.lines[0].data)) || header.FileType == ft {
-				syndef, err := highlight.ParseDef(file, header)
-				if err != nil {
-					screen.TermMessage("Error parsing syntax file " + f.Name() + ": " + err.Error())
-					continue
-				}
-				b.SyntaxDef = syndef
-				break
-			}
-		}
-	} else {
+	if syntaxFile != "" && !foundDef {
+		// we found a syntax file using a syntax header file
 		for _, f := range config.ListRuntimeFiles(config.RTSyntax) {
 			if f.Name() == syntaxFile {
 				data, err := f.Data()
@@ -627,7 +854,7 @@ func (b *Buffer) UpdateRules() {
 			go func() {
 				b.Highlighter.HighlightStates(b)
 				b.Highlighter.HighlightMatches(b, 0, b.End().Y)
-				screen.DrawChan <- true
+				screen.Redraw()
 			}()
 		}
 	}
@@ -755,19 +982,18 @@ func (b *Buffer) MoveLinesUp(start int, end int) {
 	}
 	l := string(b.LineBytes(start - 1))
 	if end == len(b.lines) {
-		b.Insert(
+		b.insert(
 			Loc{
-				utf8.RuneCount(b.lines[end-1].data),
+				util.CharacterCount(b.lines[end-1].data),
 				end - 1,
 			},
-			"\n"+l,
-		)
-	} else {
-		b.Insert(
-			Loc{0, end},
-			l+"\n",
+			[]byte{'\n'},
 		)
 	}
+	b.Insert(
+		Loc{0, end},
+		l+"\n",
+	)
 	b.Remove(
 		Loc{0, start - 1},
 		Loc{0, start},
@@ -776,7 +1002,7 @@ func (b *Buffer) MoveLinesUp(start int, end int) {
 
 // MoveLinesDown moves the range of lines down one row
 func (b *Buffer) MoveLinesDown(start int, end int) {
-	if start < 0 || start >= end || end >= len(b.lines)-1 {
+	if start < 0 || start >= end || end >= len(b.lines) {
 		return
 	}
 	l := string(b.LineBytes(end))
@@ -804,7 +1030,7 @@ var BracePairs = [][2]rune{
 // returns the location of the matching brace
 // if the boolean returned is true then the original matching brace is one character left
 // of the starting location
-func (b *Buffer) FindMatchingBrace(braceType [2]rune, start Loc) (Loc, bool) {
+func (b *Buffer) FindMatchingBrace(braceType [2]rune, start Loc) (Loc, bool, bool) {
 	curLine := []rune(string(b.LineBytes(start.Y)))
 	startChar := ' '
 	if start.X >= 0 && start.X < len(curLine) {
@@ -834,9 +1060,9 @@ func (b *Buffer) FindMatchingBrace(braceType [2]rune, start Loc) (Loc, bool) {
 					i--
 					if i == 0 {
 						if startChar == braceType[0] {
-							return Loc{x, y}, false
+							return Loc{x, y}, false, true
 						}
-						return Loc{x, y}, true
+						return Loc{x, y}, true, true
 					}
 				}
 			}
@@ -858,9 +1084,9 @@ func (b *Buffer) FindMatchingBrace(braceType [2]rune, start Loc) (Loc, bool) {
 					i--
 					if i == 0 {
 						if leftChar == braceType[1] {
-							return Loc{x, y}, true
+							return Loc{x, y}, true, true
 						}
-						return Loc{x, y}, false
+						return Loc{x, y}, false, true
 					}
 				} else if r == braceType[1] {
 					i++
@@ -868,7 +1094,7 @@ func (b *Buffer) FindMatchingBrace(braceType [2]rune, start Loc) (Loc, bool) {
 			}
 		}
 	}
-	return start, true
+	return start, true, false
 }
 
 // Retab changes all tabs to spaces or vice versa
@@ -891,6 +1117,7 @@ func (b *Buffer) Retab() {
 
 		l = bytes.TrimLeft(l, " \t")
 		b.lines[i].data = append(ws, l...)
+		b.MarkModified(i, i)
 		dirty = true
 	}
 
@@ -932,6 +1159,101 @@ func (b *Buffer) Write(bytes []byte) (n int, err error) {
 	return len(bytes), nil
 }
 
+func (b *Buffer) updateDiffSync() {
+	b.diffLock.Lock()
+	defer b.diffLock.Unlock()
+
+	b.diff = make(map[int]DiffStatus)
+
+	if b.diffBase == nil {
+		return
+	}
+
+	differ := dmp.New()
+	baseRunes, bufferRunes, _ := differ.DiffLinesToRunes(string(b.diffBase), string(b.Bytes()))
+	diffs := differ.DiffMainRunes(baseRunes, bufferRunes, false)
+	lineN := 0
+
+	for _, diff := range diffs {
+		lineCount := len([]rune(diff.Text))
+
+		switch diff.Type {
+		case dmp.DiffEqual:
+			lineN += lineCount
+		case dmp.DiffInsert:
+			var status DiffStatus
+			if b.diff[lineN] == DSDeletedAbove {
+				status = DSModified
+			} else {
+				status = DSAdded
+			}
+			for i := 0; i < lineCount; i++ {
+				b.diff[lineN] = status
+				lineN++
+			}
+		case dmp.DiffDelete:
+			b.diff[lineN] = DSDeletedAbove
+		}
+	}
+}
+
+// UpdateDiff computes the diff between the diff base and the buffer content.
+// The update may be performed synchronously or asynchronously.
+// UpdateDiff calls the supplied callback when the update is complete.
+// The argument passed to the callback is set to true if and only if
+// the update was performed synchronously.
+// If an asynchronous update is already pending when UpdateDiff is called,
+// UpdateDiff does not schedule another update, in which case the callback
+// is not called.
+func (b *Buffer) UpdateDiff(callback func(bool)) {
+	if b.updateDiffTimer != nil {
+		return
+	}
+
+	lineCount := b.LinesNum()
+	if b.diffBaseLineCount > lineCount {
+		lineCount = b.diffBaseLineCount
+	}
+
+	if lineCount < 1000 {
+		b.updateDiffSync()
+		callback(true)
+	} else if lineCount < 30000 {
+		b.updateDiffTimer = time.AfterFunc(500*time.Millisecond, func() {
+			b.updateDiffTimer = nil
+			b.updateDiffSync()
+			callback(false)
+		})
+	} else {
+		// Don't compute diffs for very large files
+		b.diffLock.Lock()
+		b.diff = make(map[int]DiffStatus)
+		b.diffLock.Unlock()
+		callback(true)
+	}
+}
+
+// SetDiffBase sets the text that is used as the base for diffing the buffer content
+func (b *Buffer) SetDiffBase(diffBase []byte) {
+	b.diffBase = diffBase
+	if diffBase == nil {
+		b.diffBaseLineCount = 0
+	} else {
+		b.diffBaseLineCount = strings.Count(string(diffBase), "\n")
+	}
+	b.UpdateDiff(func(synchronous bool) {
+		screen.Redraw()
+	})
+}
+
+// DiffStatus returns the diff status for a line in the buffer
+func (b *Buffer) DiffStatus(lineN int) DiffStatus {
+	b.diffLock.RLock()
+	defer b.diffLock.RUnlock()
+	// Note that the zero value for DiffStatus is equal to DSUnchanged
+	return b.diff[lineN]
+}
+
 // WriteLog writes a string to the log buffer
 func WriteLog(s string) {
 	LogBuf.EventHandler.Insert(LogBuf.End(), s)

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
 	}
 
@@ -76,9 +74,6 @@ 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 +97,38 @@ 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 +237,14 @@ 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 +286,7 @@ 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 +307,8 @@ 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 +334,7 @@ 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 +366,7 @@ 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 +393,7 @@ 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 +401,7 @@ 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 +430,14 @@ 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

@@ -4,12 +4,12 @@ import (
 	"bytes"
 	"log"
 	"time"
-	"unicode/utf8"
 
 	dmp "github.com/sergi/go-diff/diffmatchpatch"
-	"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/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"
 )
 
@@ -42,6 +42,74 @@ 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 {
+		log.Println("Multiple deltas not supported")
+		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 {
@@ -57,7 +125,7 @@ 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]
@@ -66,9 +134,9 @@ 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
@@ -100,12 +168,12 @@ 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)
 		}
 	}
 }
@@ -118,78 +186,33 @@ func (eh *EventHandler) Insert(start Loc, textStr string) {
 
 // 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(),
 	}
-	// oldl := eh.buf.LinesNum()
-	eh.Execute(e)
-	// linecount := eh.buf.LinesNum() - oldl
-	textcount := utf8.RuneCount(text)
-	lastnl := bytes.LastIndex(text, []byte{'\n'})
-	var endX int
-	var textX int
-	if lastnl >= 0 {
-		endX = utf8.RuneCount(text[lastnl:])
-		textX = endX
-	} else {
-		// endX = start.X + textcount
-		textX = textcount
-	}
-
-	e.Deltas[0].End = start.MoveLA(textcount, eh.buf.LineArray)
-	// e.Deltas[0].End = clamp(Loc{endX, start.Y + linecount}, eh.buf.LineArray)
-	end := e.Deltas[0].End
-
-	for _, c := range eh.cursors {
-		move := func(loc Loc) Loc {
-			log.Println("move", 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.Y += end.Y - start.Y
-				loc.X += textX
-			}
-			return loc
-		}
-		c.Loc = move(c.Loc)
-		c.Relocate()
-		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
@@ -209,6 +232,12 @@ func (eh *EventHandler) Replace(start, end Loc, replace string) {
 	eh.Insert(start, replace)
 }
 
+// ReplaceBytes deletes from start to end and replaces it with the given string
+func (eh *EventHandler) ReplaceBytes(start, end Loc, replace []byte) {
+	eh.Remove(start, end)
+	eh.InsertBytes(start, replace)
+}
+
 // Execute a textevent and add it to the undo stack
 func (eh *EventHandler) Execute(t *TextEvent) {
 	if eh.RedoStack.Len() > 0 {
@@ -260,10 +289,9 @@ 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
@@ -309,9 +337,6 @@ 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]
@@ -320,5 +345,8 @@ func (eh *EventHandler) RedoOneEvent() {
 		teCursor.Num = -1
 	}
 
+	// Modifies the text event
+	eh.UndoTextEvent(t)
+
 	eh.UndoStack.Push(t)
 }

internal/buffer/line_array.go

@@ -2,11 +2,12 @@ package buffer
 
 import (
 	"bufio"
+	"bytes"
 	"io"
 	"sync"
-	"unicode/utf8"
 
-	"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
@@ -18,7 +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
@@ -86,6 +87,8 @@ 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')
@@ -152,17 +155,19 @@ 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
@@ -186,10 +191,15 @@ func (la *LineArray) newlineBelow(y int) {
 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])
@@ -230,9 +240,7 @@ 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)
@@ -255,6 +263,10 @@ 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:])]
@@ -294,7 +306,7 @@ 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

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 +1,8 @@
 package buffer
 
 import (
-	"unicode/utf8"
-
-	"github.com/zyedidia/micro/internal/util"
+	"github.com/zyedidia/micro/v2/internal/util"
+	"go.lsp.dev/protocol"
 )
 
 // Loc stores a location
@@ -49,6 +48,11 @@ func (l Loc) LessEqual(b Loc) bool {
 	return l == b
 }
 
+// Equal returns true if two locs are equal
+func (l Loc) Equal(b Loc) bool {
+	return l.Y == b.Y && l.X == b.X
+}
+
 // The following functions require a buffer to know where newlines are
 
 // Diff returns the distance between two locations
@@ -68,9 +72,9 @@ 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 +84,7 @@ 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 +101,12 @@ 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 +121,12 @@ 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)
 }
@@ -139,9 +146,16 @@ func ByteOffset(pos Loc, buf *Buffer) int {
 // clamps a loc within a buffer
 func clamp(pos Loc, la *LineArray) Loc {
 	if pos.GreaterEqual(la.End()) {
-		return la.End().MoveLA(-1, la)
+		return la.End()
 	} else if pos.LessThan(la.Start()) {
 		return la.Start()
 	}
 	return pos
 }
+
+func toLoc(r protocol.Position) Loc {
+	return Loc{
+		X: int(r.Character),
+		Y: int(r.Line),
+	}
+}

internal/buffer/message.go

@@ -1,7 +1,7 @@
 package buffer
 
 import (
-	"github.com/zyedidia/micro/internal/config"
+	"github.com/zyedidia/micro/v2/internal/config"
 	"github.com/zyedidia/tcell"
 )
 

internal/buffer/save.go

@@ -1,6 +1,7 @@
 package buffer
 
 import (
+	"bufio"
 	"bytes"
 	"errors"
 	"io"
@@ -10,11 +11,10 @@ import (
 	"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"
@@ -55,8 +55,9 @@ func overwriteFile(name string, enc encoding.Encoding, fn func(io.Writer) error,
 		return
 	}
 
-	w := transform.NewWriter(writeCloser, enc.NewEncoder())
+	w := bufio.NewWriter(transform.NewWriter(writeCloser, enc.NewEncoder()))
 	err = fn(w)
+	w.Flush()
 
 	if e := writeCloser.Close(); e != nil && err == nil {
 		err = e
@@ -95,12 +96,11 @@ func (b *Buffer) saveToFile(filename string, withSudo bool) error {
 		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})
 		}
 
@@ -109,8 +109,8 @@ 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")
+		if b.RuneAt(Loc{end.X, end.Y}) != '\n' {
+			b.insert(end, []byte{'\n'})
 		}
 	}
 
@@ -194,5 +194,11 @@ func (b *Buffer) saveToFile(filename string, withSudo bool) error {
 	absPath, _ := filepath.Abs(filename)
 	b.AbsPath = absPath
 	b.isModified = false
+	b.UpdateRules()
+
+	if b.HasLSP() {
+		b.Server.DidSave(b.AbsPath)
+	}
+
 	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)
 
@@ -61,19 +74,19 @@ 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)
 		}
@@ -120,24 +133,27 @@ 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 +171,23 @@ 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

@@ -10,8 +10,8 @@ import (
 
 	"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
@@ -31,7 +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{

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 {
@@ -10,9 +10,11 @@ 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" {
@@ -37,6 +39,12 @@ func (b *Buffer) SetOptionNative(option string, nativeValue interface{}) error {
 		b.isModified = true
 	} else if option == "readonly" && b.Type.Kind == BTDefault.Kind {
 		b.Type.Readonly = nativeValue.(bool)
+	} else if option == "lsp" && b.Type.Kind == BTDefault.Kind {
+		if nativeValue.(bool) && !b.HasLSP() {
+			b.lspInit()
+		} else if b.HasLSP() {
+			b.Server.Shutdown()
+		}
 	}
 
 	return nil

internal/clipboard/clipboard.go

@@ -0,0 +1,151 @@
+package clipboard
+
+import (
+	"errors"
+
+	"github.com/zyedidia/clipboard"
+)
+
+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
+)
+
+// Initialize attempts to initialize the clipboard using the given method
+func Initialize(m Method) error {
+	var err error
+	switch m {
+	case External:
+		err = clipboard.Initialize()
+	}
+	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:
+			return clipboard.ReadAll("clipboard")
+		case PrimaryReg:
+			return clipboard.ReadAll("primary")
+		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(text, "clipboard")
+		case PrimaryReg:
+			return clipboard.WriteAll(text, "primary")
+		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"
+)
+
+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/colorscheme.go

@@ -117,16 +117,12 @@ 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 {
@@ -151,6 +147,9 @@ func StringToStyle(str string) tcell.Style {
 	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)
 	}

internal/config/colorscheme_test.go

@@ -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

@@ -5,3 +5,7 @@ const (
 )
 
 var Bindings map[string]string
+
+func init() {
+	Bindings = make(map[string]string)
+}

internal/config/plugin.go

@@ -5,7 +5,7 @@ import (
 	"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

internal/config/plugin_installer.go

@@ -16,8 +16,8 @@ import (
 	"github.com/blang/semver"
 	lua "github.com/yuin/gopher-lua"
 	"github.com/zyedidia/json5"
-	ulua "github.com/zyedidia/micro/internal/lua"
-	"github.com/zyedidia/micro/internal/util"
+	ulua "github.com/zyedidia/micro/v2/internal/lua"
+	"github.com/zyedidia/micro/v2/internal/util"
 )
 
 var (
@@ -607,7 +607,7 @@ 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.IsEnabled() {
+			if !p.IsEnabled() || p.Default {
 				continue
 			}
 			plugins = append(plugins, p.Name)

internal/config/rtfiles.go

@@ -199,7 +199,6 @@ func InitRuntimeFiles() {
 					}
 					p.Info, err = NewPluginInfo(data)
 					if err != nil {
-						log.Println(err)
 						continue
 					}
 					p.Name = p.Info.Name
@@ -232,7 +231,6 @@ func InitRuntimeFiles() {
 						}
 						p.Info, err = NewPluginInfo(data)
 						if err != nil {
-							log.Println(err)
 							continue
 						}
 						p.Name = p.Info.Name

internal/config/settings.go

@@ -3,6 +3,7 @@ package config
 import (
 	"encoding/json"
 	"errors"
+	"fmt"
 	"io/ioutil"
 	"os"
 	"path/filepath"
@@ -12,7 +13,7 @@ import (
 
 	"github.com/zyedidia/glob"
 	"github.com/zyedidia/json5"
-	"github.com/zyedidia/micro/internal/util"
+	"github.com/zyedidia/micro/v2/internal/util"
 	"golang.org/x/text/encoding/htmlindex"
 )
 
@@ -26,16 +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,
+	"clipboard":    validateClipboard,
 	"tabsize":      validatePositiveValue,
 	"scrollmargin": validateNonNegativeValue,
 	"scrollspeed":  validateNonNegativeValue,
@@ -50,12 +58,14 @@ func ReadSettings() error {
 	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())
 			}
 
@@ -75,16 +85,33 @@ func ReadSettings() error {
 	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 = errors.New(fmt.Sprintf("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
@@ -97,6 +124,10 @@ 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 = errors.New(fmt.Sprintf("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
 					}
 				}
@@ -109,6 +140,10 @@ 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 = errors.New(fmt.Sprintf("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
 					}
 				}
@@ -120,10 +155,35 @@ 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, "", "    ")
@@ -132,10 +192,23 @@ func WriteSettings(filename string) error {
 	return err
 }
 
+// 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 {
-		txt, _ := json.MarshalIndent(GlobalSettings, "", "    ")
+		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
@@ -144,15 +217,15 @@ func OverwriteSettings(filename string) error {
 // 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 v, ok := GlobalSettings[name]; !ok {
+	if _, ok := GlobalSettings[name]; !ok {
 		defaultCommonSettings[name] = defaultvalue
 		GlobalSettings[name] = defaultvalue
-		err := WriteSettings(filepath.Join(ConfigDir, "/settings.json"))
+		err := WriteSettings(filepath.Join(ConfigDir, "settings.json"))
 		if err != nil {
 			return errors.New("Error writing settings.json file: " + err.Error())
 		}
 	} else {
-		defaultCommonSettings[name] = v
+		defaultCommonSettings[name] = defaultvalue
 	}
 	return nil
 }
@@ -165,14 +238,14 @@ func RegisterGlobalOptionPlug(pl string, name string, defaultvalue interface{})
 // 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(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
 }
@@ -184,23 +257,29 @@ 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,
 	"indentchar":     " ",
 	"keepautoindent": false,
+	"lsp":            true,
 	"matchbrace":     true,
 	"mkparents":      false,
+	"permbackup":     false,
 	"readonly":       false,
 	"rmtrailingws":   false,
 	"ruler":          true,
+	"relativeruler":  false,
 	"savecursor":     false,
 	"saveundo":       false,
 	"scrollbar":      false,
@@ -243,17 +322,22 @@ func DefaultCommonSettings() map[string]interface{} {
 
 // a list of settings that should only be globally modified and their
 // default values
-var defaultGlobalSettings = map[string]interface{}{
+var DefaultGlobalOnlySettings = map[string]interface{}{
 	"autosave":       float64(0),
+	"clipboard":      "external",
 	"colorscheme":    "default",
+	"divchars":       "|-",
+	"divreverse":     true,
 	"infobar":        true,
 	"keymenu":        false,
 	"mouse":          true,
+	"parsecursor":    false,
 	"paste":          false,
 	"savehistory":    true,
 	"sucmd":          "sudo",
 	"pluginchannels": []string{"https://raw.githubusercontent.com/micro-editor/plugin-channel/master/channel.json"},
 	"pluginrepos":    []string{},
+	"xterm":          false,
 }
 
 // a list of settings that should never be globally modified
@@ -269,7 +353,7 @@ 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
@@ -282,7 +366,7 @@ 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
@@ -369,6 +453,22 @@ 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)
 

internal/display/bufwindow.go

@@ -2,13 +2,12 @@ package display
 
 import (
 	"strconv"
-	"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/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/tcell"
 )
 
@@ -18,7 +17,8 @@ type BufWindow struct {
 	*View
 
 	// Buffer being shown in this window
-	Buf *buffer.Buffer
+	Buf         *buffer.Buffer
+	completeBox buffer.Loc
 
 	active bool
 
@@ -73,9 +73,9 @@ func (w *BufWindow) getStartInfo(n, lineN int) ([]byte, int, int, *tcell.Style)
 	curStyle := config.DefStyle
 	var s *tcell.Style
 	for len(b) > 0 {
-		r, size := utf8.DecodeRune(b)
+		r, _, size := util.DecodeCharacter(b)
 
-		curStyle, found := w.getStyle(curStyle, bloc, r)
+		curStyle, found := w.getStyle(curStyle, bloc)
 		if found {
 			s = &curStyle
 		}
@@ -136,9 +136,6 @@ func (w *BufWindow) Relocate() bool {
 	if w.drawStatus {
 		h--
 	}
-	if b.LinesNum() <= h {
-		height = w.Height
-	}
 	ret := false
 	activeC := w.Buf.GetActiveCursor()
 	cy := activeC.Y
@@ -212,6 +209,9 @@ func (w *BufWindow) LocFromVisual(svloc buffer.Loc) buffer.Loc {
 		if hasMessage {
 			vloc.X += 2
 		}
+		if b.Settings["diffgutter"].(bool) {
+			vloc.X++
+		}
 		if b.Settings["ruler"].(bool) {
 			vloc.X += maxLineNumLength + 1
 		}
@@ -237,7 +237,7 @@ func (w *BufWindow) LocFromVisual(svloc buffer.Loc) buffer.Loc {
 				return bloc
 			}
 
-			r, size := utf8.DecodeRune(line)
+			r, _, size := util.DecodeCharacter(line)
 			draw()
 			width := 0
 
@@ -272,11 +272,7 @@ func (w *BufWindow) LocFromVisual(svloc buffer.Loc) buffer.Loc {
 					if vloc.Y >= bufHeight {
 						break
 					}
-					vloc.X = 0
-					// This will draw an empty line number because the current line is wrapped
-					if b.Settings["ruler"].(bool) {
-						vloc.X += maxLineNumLength + 1
-					}
+					vloc.X = w.gutterOffset
 				}
 			}
 		}
@@ -311,8 +307,43 @@ func (w *BufWindow) drawGutter(vloc *buffer.Loc, bloc *buffer.Loc) {
 	vloc.X++
 }
 
+func (w *BufWindow) drawDiffGutter(backgroundStyle tcell.Style, softwrapped bool, vloc *buffer.Loc, bloc *buffer.Loc) {
+	symbol := ' '
+	styleName := ""
+
+	switch w.Buf.DiffStatus(bloc.Y) {
+	case buffer.DSAdded:
+		symbol = '\u258C' // Left half block
+		styleName = "diff-added"
+	case buffer.DSModified:
+		symbol = '\u258C' // Left half block
+		styleName = "diff-modified"
+	case buffer.DSDeletedAbove:
+		if !softwrapped {
+			symbol = '\u2594' // Upper one eighth block
+			styleName = "diff-deleted"
+		}
+	}
+
+	style := backgroundStyle
+	if s, ok := config.Colorscheme[styleName]; ok {
+		foreground, _, _ := s.Decompose()
+		style = style.Foreground(foreground)
+	}
+
+	screen.SetContent(w.X+vloc.X, w.Y+vloc.Y, symbol, nil, style)
+	vloc.X++
+}
+
 func (w *BufWindow) drawLineNum(lineNumStyle tcell.Style, softwrapped bool, maxLineNumLength int, vloc *buffer.Loc, bloc *buffer.Loc) {
-	lineNum := strconv.Itoa(bloc.Y + 1)
+	cursorLine := w.Buf.GetActiveCursor().Loc.Y
+	var lineInt int
+	if w.Buf.Settings["relativeruler"] == false || cursorLine == bloc.Y {
+		lineInt = bloc.Y + 1
+	} else {
+		lineInt = bloc.Y - cursorLine
+	}
+	lineNum := strconv.Itoa(util.Abs(lineInt))
 
 	// Write the spaces before the line number if necessary
 	for i := 0; i < maxLineNumLength-len(lineNum); i++ {
@@ -336,7 +367,7 @@ func (w *BufWindow) drawLineNum(lineNumStyle tcell.Style, softwrapped bool, maxL
 
 // getStyle returns the highlight style for the given character position
 // If there is no change to the current highlight style it just returns that
-func (w *BufWindow) getStyle(style tcell.Style, bloc buffer.Loc, r rune) (tcell.Style, bool) {
+func (w *BufWindow) getStyle(style tcell.Style, bloc buffer.Loc) (tcell.Style, bool) {
 	if group, ok := w.Buf.Match(bloc.Y)[bloc.X]; ok {
 		s := config.GetColor(group.String())
 		return s, true
@@ -373,15 +404,22 @@ func (w *BufWindow) displayBuffer() {
 		bufWidth--
 	}
 
-	if b.Settings["syntax"].(bool) && b.SyntaxDef != nil {
-		for _, r := range b.Modifications {
-			final := -1
-			for i := r.X; i <= r.Y; i++ {
-				final = util.Max(b.Highlighter.ReHighlightStates(b, i), final)
-			}
-			b.Highlighter.HighlightMatches(b, r.X, final+1)
+	if b.ModifiedThisFrame {
+		if b.Settings["diffgutter"].(bool) {
+			b.UpdateDiff(func(synchronous bool) {
+				// If the diff was updated asynchronously, the outer call to
+				// displayBuffer might already be completed and we need to
+				// schedule a redraw in order to display the new diff.
+				// Note that this cannot lead to an infinite recursion
+				// because the modifications were cleared above so there won't
+				// be another call to UpdateDiff when displayBuffer is called
+				// during the redraw.
+				if !synchronous {
+					screen.Redraw()
+				}
+			})
 		}
-		b.ClearModifications()
+		b.ModifiedThisFrame = false
 	}
 
 	var matchingBraces []buffer.Loc
@@ -398,12 +436,14 @@ func (w *BufWindow) displayBuffer() {
 				r := c.RuneUnder(curX)
 				rl := c.RuneUnder(curX - 1)
 				if r == bp[0] || r == bp[1] || rl == bp[0] || rl == bp[1] {
-					mb, left := b.FindMatchingBrace(bp, curLoc)
-					matchingBraces = append(matchingBraces, mb)
-					if !left {
-						matchingBraces = append(matchingBraces, curLoc)
-					} else {
-						matchingBraces = append(matchingBraces, curLoc.Move(-1, b))
+					mb, left, found := b.FindMatchingBrace(bp, curLoc)
+					if found {
+						matchingBraces = append(matchingBraces, mb)
+						if !left {
+							matchingBraces = append(matchingBraces, curLoc)
+						} else {
+							matchingBraces = append(matchingBraces, curLoc.Move(-1, b))
+						}
 					}
 				}
 			}
@@ -444,18 +484,28 @@ func (w *BufWindow) displayBuffer() {
 	for vloc.Y = 0; vloc.Y < bufHeight; vloc.Y++ {
 		vloc.X = 0
 
+		currentLine := false
+		for _, c := range cursors {
+			if bloc.Y == c.Y && w.active {
+				currentLine = true
+				break
+			}
+		}
+
+		s := lineNumStyle
+		if currentLine {
+			s = curNumStyle
+		}
+
 		if hasMessage {
 			w.drawGutter(&vloc, &bloc)
 		}
 
+		if b.Settings["diffgutter"].(bool) {
+			w.drawDiffGutter(s, false, &vloc, &bloc)
+		}
+
 		if b.Settings["ruler"].(bool) {
-			s := lineNumStyle
-			for _, c := range cursors {
-				if bloc.Y == c.Y && w.active {
-					s = curNumStyle
-					break
-				}
-			}
 			w.drawLineNum(s, false, maxLineNumLength, &vloc, &bloc)
 		}
 
@@ -467,8 +517,15 @@ func (w *BufWindow) displayBuffer() {
 		}
 		bloc.X = bslice
 
-		draw := func(r rune, style tcell.Style, showcursor bool) {
+		draw := func(r rune, combc []rune, style tcell.Style, showcursor bool) {
 			if nColsBeforeStart <= 0 {
+				_, origBg, _ := style.Decompose()
+				_, defBg, _ := config.DefStyle.Decompose()
+
+				// syntax highlighting with non-default background takes precedence
+				// over cursor-line and color-column
+				dontOverrideBackground := origBg != defBg
+
 				for _, c := range cursors {
 					if c.HasSelection() &&
 						(bloc.GreaterEqual(c.CurSelection[0]) && bloc.LessThan(c.CurSelection[1]) ||
@@ -481,7 +538,7 @@ func (w *BufWindow) displayBuffer() {
 						}
 					}
 
-					if b.Settings["cursorline"].(bool) && w.active &&
+					if b.Settings["cursorline"].(bool) && w.active && !dontOverrideBackground &&
 						!c.HasSelection() && c.Y == bloc.Y {
 						if s, ok := config.Colorscheme["cursor-line"]; ok {
 							fg, _, _ := s.Decompose()
@@ -513,7 +570,7 @@ func (w *BufWindow) displayBuffer() {
 				}
 
 				if s, ok := config.Colorscheme["color-column"]; ok {
-					if colorcolumn != 0 && vloc.X-w.gutterOffset == colorcolumn {
+					if colorcolumn != 0 && vloc.X-w.gutterOffset+w.StartCol == colorcolumn && !dontOverrideBackground {
 						fg, _, _ := s.Decompose()
 						style = style.Background(fg)
 					}
@@ -525,7 +582,14 @@ func (w *BufWindow) displayBuffer() {
 					}
 				}
 
-				screen.SetContent(w.X+vloc.X, w.Y+vloc.Y, r, nil, style)
+				screen.SetContent(w.X+vloc.X, w.Y+vloc.Y, r, combc, style)
+
+				if w.Buf.HasSuggestions && len(w.Buf.Completions) > 0 {
+					compl := w.Buf.Completions[0].Edits[0].Start
+					if bloc.X == compl.X && bloc.Y == compl.Y {
+						w.completeBox = buffer.Loc{w.X + vloc.X, w.Y + vloc.Y}
+					}
+				}
 
 				if showcursor {
 					for _, c := range cursors {
@@ -541,10 +605,11 @@ func (w *BufWindow) displayBuffer() {
 
 		totalwidth := w.StartCol - nColsBeforeStart
 		for len(line) > 0 {
-			r, size := utf8.DecodeRune(line)
-			curStyle, _ = w.getStyle(curStyle, bloc, r)
+			r, combc, size := util.DecodeCharacter(line)
 
-			draw(r, curStyle, true)
+			curStyle, _ = w.getStyle(curStyle, bloc)
+
+			draw(r, combc, curStyle, true)
 
 			width := 0
 
@@ -561,7 +626,7 @@ func (w *BufWindow) displayBuffer() {
 			// Draw any extra characters either spaces for tabs or @ for incomplete wide runes
 			if width > 1 {
 				for i := 1; i < width; i++ {
-					draw(char, curStyle, false)
+					draw(char, nil, curStyle, false)
 				}
 			}
 			bloc.X++
@@ -579,6 +644,13 @@ func (w *BufWindow) displayBuffer() {
 						break
 					}
 					vloc.X = 0
+					if hasMessage {
+						w.drawGutter(&vloc, &bloc)
+					}
+					if b.Settings["diffgutter"].(bool) {
+						w.drawDiffGutter(lineNumStyle, true, &vloc, &bloc)
+					}
+
 					// This will draw an empty line number because the current line is wrapped
 					if b.Settings["ruler"].(bool) {
 						w.drawLineNum(lineNumStyle, true, maxLineNumLength, &vloc, &bloc)
@@ -600,7 +672,7 @@ func (w *BufWindow) displayBuffer() {
 		for i := vloc.X; i < bufWidth; i++ {
 			curStyle := style
 			if s, ok := config.Colorscheme["color-column"]; ok {
-				if colorcolumn != 0 && i-w.gutterOffset == colorcolumn {
+				if colorcolumn != 0 && i-w.gutterOffset+w.StartCol == colorcolumn {
 					fg, _, _ := s.Decompose()
 					curStyle = style.Background(fg)
 				}
@@ -609,7 +681,8 @@ func (w *BufWindow) displayBuffer() {
 		}
 
 		if vloc.X != bufWidth {
-			draw(' ', curStyle, true)
+			// Display newline within a selection
+			draw(' ', nil, config.DefStyle, true)
 		}
 
 		bloc.X = w.StartCol
@@ -632,8 +705,27 @@ func (w *BufWindow) displayStatusLine() {
 		w.sline.Display()
 	} else if w.Y+w.Height != infoY {
 		w.drawStatus = true
+
+		divchars := config.GetGlobalOption("divchars").(string)
+		if util.CharacterCountInString(divchars) != 2 {
+			divchars = "|-"
+		}
+
+		_, _, size := util.DecodeCharacterInString(divchars)
+		divchar, combc, _ := util.DecodeCharacterInString(divchars[size:])
+
+		dividerStyle := config.DefStyle
+		if style, ok := config.Colorscheme["divider"]; ok {
+			dividerStyle = style
+		}
+
+		divreverse := config.GetGlobalOption("divreverse").(bool)
+		if divreverse {
+			dividerStyle = dividerStyle.Reverse(true)
+		}
+
 		for x := w.X; x < w.X+w.Width; x++ {
-			screen.SetContent(x, w.Y+w.Height-1, '-', nil, config.DefStyle.Reverse(true))
+			screen.SetContent(x, w.Y+w.Height-1, divchar, combc, dividerStyle)
 		}
 	} else {
 		w.drawStatus = false
@@ -658,9 +750,60 @@ func (w *BufWindow) displayScrollBar() {
 	}
 }
 
+func (w *BufWindow) displayCompleteBox() {
+	if !w.Buf.HasSuggestions || w.Buf.NumCursors() > 1 {
+		return
+	}
+
+	labelw := 0
+	detailw := 0
+	kindw := 0
+	for _, comp := range w.Buf.Completions {
+		charcount := util.CharacterCountInString(comp.Label)
+		if charcount > labelw {
+			labelw = charcount
+		}
+		charcount = util.CharacterCountInString(comp.Detail)
+		if charcount > detailw {
+			detailw = charcount
+		}
+		charcount = util.CharacterCountInString(comp.Kind)
+		if charcount > kindw {
+			kindw = charcount
+		}
+	}
+	labelw++
+	kindw++
+
+	display := func(s string, width, x, y int, cur bool) {
+		for j := 0; j < width; j++ {
+			r := ' '
+			var combc []rune
+			var size int
+			if len(s) > 0 {
+				r, combc, size = util.DecodeCharacterInString(s)
+				s = s[size:]
+			}
+			st := config.DefStyle.Reverse(true)
+			if cur {
+				st = st.Reverse(false)
+			}
+			screen.SetContent(w.completeBox.X+x+j, w.completeBox.Y+y, r, combc, st)
+		}
+	}
+
+	for i, comp := range w.Buf.Completions {
+		cur := i == w.Buf.CurCompletion
+		display(comp.Label+" ", labelw, 0, i+1, cur)
+		display(comp.Kind+" ", kindw, labelw, i+1, cur)
+		display(comp.Detail, detailw, labelw+kindw, i+1, cur)
+	}
+}
+
 // Display displays the buffer and the statusline
 func (w *BufWindow) Display() {
 	w.displayStatusLine()
 	w.displayScrollBar()
 	w.displayBuffer()
+	w.displayCompleteBox()
 }

internal/display/infowindow.go

@@ -1,14 +1,12 @@
 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/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"
 )
 
@@ -70,7 +68,7 @@ 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}
 }
 
@@ -86,13 +84,13 @@ 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() &&
@@ -112,8 +110,9 @@ func (i *InfoWindow) displayBuffer() {
 				c := r
 				if j > 0 {
 					c = ' '
+					combc = nil
 				}
-				screen.SetContent(vlocX, i.Y, c, nil, style)
+				screen.SetContent(vlocX, i.Y, c, combc, style)
 			}
 			vlocX++
 		}
@@ -122,13 +121,11 @@ func (i *InfoWindow) displayBuffer() {
 
 	totalwidth := blocX - nColsBeforeStart
 	for len(line) > 0 {
-		if activeC.X == blocX {
-			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
 
@@ -148,9 +145,12 @@ 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
@@ -179,8 +179,8 @@ func (i *InfoWindow) displayKeyMenu() {
 
 func (i *InfoWindow) totalSize() int {
 	sum := 0
-	for _, n := range i.Suggestions {
-		sum += runewidth.StringWidth(n) + 1
+	for _, n := range i.Completions {
+		sum += runewidth.StringWidth(n.Label) + 1
 	}
 	return sum
 }
@@ -189,9 +189,9 @@ func (i *InfoWindow) scrollToSuggestion() {
 	x := 0
 	s := i.totalSize()
 
-	for j, n := range i.Suggestions {
-		c := utf8.RuneCountInString(n)
-		if j == i.CurSuggestion {
+	for j, n := range i.Completions {
+		c := util.CharacterCountInString(n.Label)
+		if j == i.CurCompletion {
 			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 {
@@ -208,12 +208,13 @@ func (i *InfoWindow) scrollToSuggestion() {
 }
 
 func (i *InfoWindow) Display() {
-	x := 0
-	if config.GetGlobalOption("keymenu").(bool) {
-		i.displayKeyMenu()
-	}
-
 	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
 		}
@@ -235,7 +236,7 @@ func (i *InfoWindow) Display() {
 		}
 	}
 
-	if i.HasSuggestions && len(i.Suggestions) > 1 {
+	if i.HasSuggestions && len(i.Completions) > 1 {
 		i.scrollToSuggestion()
 
 		x := -i.hscroll
@@ -272,12 +273,12 @@ func (i *InfoWindow) Display() {
 			}
 		}
 
-		for j, s := range i.Suggestions {
+		for j, s := range i.Completions {
 			style := statusLineStyle
-			if i.CurSuggestion == j {
+			if i.CurCompletion == j {
 				style = style.Reverse(true)
 			}
-			for _, r := range s {
+			for _, r := range s.Label {
 				draw(r, style)
 				// screen.SetContent(x, i.Y-keymenuOffset-1, r, nil, style)
 			}

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 {
@@ -103,44 +98,6 @@ func (s *StatusLine) Display() {
 	// We'll draw the line at the lowest line in the window
 	y := s.win.Height + s.win.Y - 1
 
-	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 {
-			statusLineStyle = style
-		}
-		keymenuOffset := 0
-		if config.GetGlobalOption("keymenu").(bool) {
-			keymenuOffset = len(keydisplay)
-		}
-		x := 0
-		for j, sug := range b.Suggestions {
-			style := statusLineStyle
-			if b.CurSuggestion == j {
-				style = style.Reverse(true)
-			}
-			for _, r := range sug {
-				screen.SetContent(x, y-keymenuOffset, r, nil, style)
-				x++
-				if x >= s.win.Width {
-					return
-				}
-			}
-			screen.SetContent(x, y-keymenuOffset, ' ', nil, statusLineStyle)
-			x++
-			if x >= s.win.Width {
-				return
-			}
-		}
-
-		for x < s.win.Width {
-			screen.SetContent(x, y-keymenuOffset, ' ', nil, statusLineStyle)
-			x++
-		}
-		return
-	}
-
 	formatter := func(match []byte) []byte {
 		name := match[2 : len(match)-1]
 		if bytes.HasPrefix(name, []byte("opt")) {
@@ -172,34 +129,36 @@ func (s *StatusLine) Display() {
 		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.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.SetContent(winX+x, y, c, nil, statusLineStyle)
+				screen.SetContent(winX+x, y, c, combc, statusLineStyle)
 			}
 		} else {
 			screen.SetContent(winX+x, y, ' ', nil, statusLineStyle)

internal/display/tabwindow.go

@@ -1,32 +1,30 @@
 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/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
+	w.Width = width
 }
 
 func (w *TabWindow) LocFromVisual(vloc buffer.Loc) int {
@@ -34,13 +32,13 @@ func (w *TabWindow) LocFromVisual(vloc buffer.Loc) int {
 
 	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
 		}
 	}
@@ -50,9 +48,9 @@ func (w *TabWindow) LocFromVisual(vloc buffer.Loc) int {
 func (w *TabWindow) Scroll(amt int) {
 	w.hscroll += amt
 	s := w.TotalSize()
-	w.hscroll = util.Clamp(w.hscroll, 0, s-w.width)
+	w.hscroll = util.Clamp(w.hscroll, 0, s-w.Width)
 
-	if s-w.width <= 0 {
+	if s-w.Width <= 0 {
 		w.hscroll = 0
 	}
 }
@@ -75,19 +73,19 @@ func (w *TabWindow) SetActive(a int) {
 	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 {
+	if s-w.Width <= 0 {
 		w.hscroll = 0
 	}
 }
@@ -96,6 +94,11 @@ func (w *TabWindow) Display() {
 	x := -w.hscroll
 	done := false
 
+	tabBarStyle := config.DefStyle.Reverse(true)
+	if style, ok := config.Colorscheme["tabbar"]; ok {
+		tabBarStyle = style
+	}
+
 	draw := func(r rune, n int) {
 		for i := 0; i < n; i++ {
 			rw := runewidth.RuneWidth(r)
@@ -104,14 +107,14 @@ func (w *TabWindow) Display() {
 				if j > 0 {
 					c = ' '
 				}
-				if x == w.width-1 && !done {
-					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.SetContent(0, w.Y, '<', nil, config.DefStyle.Reverse(true))
-				} else if x >= 0 && x < w.width {
-					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, tabBarStyle)
 				}
 				x++
 			}
@@ -136,12 +139,12 @@ func (w *TabWindow) Display() {
 		} else {
 			draw(' ', 3)
 		}
-		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)
 	}
 }

internal/display/termwindow.go

@@ -1,12 +1,11 @@
 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/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"
 	"github.com/zyedidia/terminal"
 )
@@ -98,12 +97,12 @@ 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.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.SetContent(w.X+x, w.Y+w.Height, ' ', nil, statusLineStyle)
 			}

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.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

@@ -1,7 +1,7 @@
 package display
 
 import (
-	"github.com/zyedidia/micro/internal/buffer"
+	"github.com/zyedidia/micro/v2/internal/buffer"
 )
 
 type View struct {

internal/info/history.go

@@ -3,8 +3,9 @@ package info
 import (
 	"encoding/gob"
 	"os"
+	"path/filepath"
 
-	"github.com/zyedidia/micro/internal/config"
+	"github.com/zyedidia/micro/v2/internal/config"
 )
 
 // LoadHistory attempts to load user history from configDir/buffers/history
@@ -12,7 +13,7 @@ import (
 // The savehistory option must be on
 func (i *InfoBuf) LoadHistory() {
 	if config.GetGlobalOption("savehistory").(bool) {
-		file, err := os.Open(config.ConfigDir + "/buffers/history")
+		file, err := os.Open(filepath.Join(config.ConfigDir, "buffers", "history"))
 		defer file.Close()
 		var decodedMap map[string][]string
 		if err == nil {
@@ -46,7 +47,7 @@ func (i *InfoBuf) SaveHistory() {
 			}
 		}
 
-		file, err := os.Create(config.ConfigDir + "/buffers/history")
+		file, err := os.Create(filepath.Join(config.ConfigDir, "buffers", "history"))
 		defer file.Close()
 		if err == nil {
 			encoder := gob.NewEncoder(file)

internal/info/infobuffer.go

@@ -3,7 +3,7 @@ package info
 import (
 	"fmt"
 
-	"github.com/zyedidia/micro/internal/buffer"
+	"github.com/zyedidia/micro/v2/internal/buffer"
 )
 
 // The InfoBuf displays messages and other info at the bottom of the screen.
@@ -146,7 +146,7 @@ func (i *InfoBuf) DonePrompt(canceled bool) {
 				h := i.History[i.PromptType]
 				h[len(h)-1] = resp
 			}
-			i.PromptCallback = nil
+			// i.PromptCallback = nil
 		}
 		i.Replace(i.Start(), i.End(), "")
 	}

internal/lsp/install.go

@@ -0,0 +1,94 @@
+package lsp
+
+import (
+	"errors"
+	"io"
+	"io/ioutil"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strings"
+
+	"github.com/zyedidia/micro/v2/internal/config"
+	"gopkg.in/yaml.v2"
+)
+
+var ErrManualInstall = errors.New("Requires manual installation")
+
+type Config struct {
+	Languages map[string]Language `yaml:"language"`
+}
+
+type Language struct {
+	Command string     `yaml:"command"`
+	Args    []string   `yaml:"args"`
+	Install [][]string `yaml:"install"`
+}
+
+var conf *Config
+
+func GetLanguage(lang string) (Language, bool) {
+	if conf != nil {
+		l, ok := conf.Languages[lang]
+		return l, ok
+	}
+	return Language{}, false
+}
+
+func Init() error {
+	var servers []byte
+	var err error
+
+	filename := filepath.Join(config.ConfigDir, "lsp.yaml")
+	if _, e := os.Stat(filename); e == nil {
+		servers, err = ioutil.ReadFile(filename)
+		if err != nil {
+			servers = servers_internal
+		}
+	} else {
+		err = ioutil.WriteFile(filename, servers_internal, 0644)
+		servers = servers_internal
+	}
+
+	conf, err = LoadConfig(servers)
+	return err
+}
+
+func LoadConfig(data []byte) (*Config, error) {
+	var conf Config
+	if err := yaml.Unmarshal(data, &conf); err != nil {
+		return nil, err
+	}
+
+	return &conf, nil
+}
+
+func (l Language) Installed() bool {
+	_, err := exec.LookPath(l.Command)
+	if err != nil {
+		return false
+	}
+
+	return true
+}
+
+func (l Language) DoInstall(w io.Writer) error {
+	if l.Installed() {
+		return nil
+	}
+
+	if len(l.Install) == 0 {
+		return ErrManualInstall
+	}
+
+	for _, c := range l.Install {
+		io.WriteString(w, strings.Join(c, " ")+"\n")
+		cmd := exec.Command(c[0], c[1:]...)
+		err := cmd.Run()
+		if err != nil {
+			return err
+		}
+	}
+
+	return nil
+}

internal/lsp/languages.go

@@ -0,0 +1,20 @@
+package lsp
+
+// mappings for when micro filetypes don't match LSP language identifiers
+var languages = map[string]string{
+	"batch":           "bat",
+	"c++":             "cpp",
+	"git-rebase-todo": "git-rebase",
+	"html4":           "html",
+	"html5":           "html",
+	"python2":         "python",
+	"shell":           "shellscript",
+	// "tex": "latex",
+}
+
+func Filetype(ft string) string {
+	if l, ok := languages[ft]; ok {
+		return l
+	}
+	return ft
+}

internal/lsp/notifications.go

@@ -0,0 +1,58 @@
+package lsp
+
+import (
+	lsp "go.lsp.dev/protocol"
+	"go.lsp.dev/uri"
+)
+
+func (s *Server) DidOpen(filename, language, text string, version uint64) {
+	doc := lsp.TextDocumentItem{
+		URI:        uri.File(filename),
+		LanguageID: lsp.LanguageIdentifier(language),
+		Version:    float64(version), // not sure why this is a float on go.lsp.dev
+		Text:       text,
+	}
+
+	params := lsp.DidOpenTextDocumentParams{
+		TextDocument: doc,
+	}
+
+	go s.sendNotification(lsp.MethodTextDocumentDidOpen, params)
+}
+
+func (s *Server) DidSave(filename string) {
+	doc := lsp.TextDocumentIdentifier{
+		URI: uri.File(filename),
+	}
+
+	params := lsp.DidSaveTextDocumentParams{
+		TextDocument: doc,
+	}
+	go s.sendNotification(lsp.MethodTextDocumentDidSave, params)
+}
+
+func (s *Server) DidChange(filename string, version uint64, changes []lsp.TextDocumentContentChangeEvent) {
+	doc := lsp.VersionedTextDocumentIdentifier{
+		TextDocumentIdentifier: lsp.TextDocumentIdentifier{
+			URI: uri.File(filename),
+		},
+		Version: &version,
+	}
+
+	params := lsp.DidChangeTextDocumentParams{
+		TextDocument:   doc,
+		ContentChanges: changes,
+	}
+	go s.sendNotification(lsp.MethodTextDocumentDidChange, params)
+}
+
+func (s *Server) DidClose(filename string) {
+	doc := lsp.TextDocumentIdentifier{
+		URI: uri.File(filename),
+	}
+
+	params := lsp.DidCloseTextDocumentParams{
+		TextDocument: doc,
+	}
+	go s.sendNotification(lsp.MethodTextDocumentDidClose, params)
+}

internal/lsp/requests.go

@@ -0,0 +1,198 @@
+package lsp
+
+import (
+	"encoding/json"
+	"errors"
+
+	lsp "go.lsp.dev/protocol"
+	"go.lsp.dev/uri"
+)
+
+var ErrNotSupported = errors.New("Operation not supported by language server")
+
+type RPCCompletion struct {
+	RPCVersion string             `json:"jsonrpc"`
+	ID         int                `json:"id"`
+	Result     lsp.CompletionList `json:"result"`
+}
+
+type RPCCompletionAlternate struct {
+	RPCVersion string               `json:"jsonrpc"`
+	ID         int                  `json:"id"`
+	Result     []lsp.CompletionItem `json:"result"`
+}
+
+type RPCHover struct {
+	RPCVersion string    `json:"jsonrpc"`
+	ID         int       `json:"id"`
+	Result     lsp.Hover `json:"result"`
+}
+
+type RPCFormat struct {
+	RPCVersion string         `json:"jsonrpc"`
+	ID         int            `json:"id"`
+	Result     []lsp.TextEdit `json:"result"`
+}
+
+type hoverAlternate struct {
+	// Contents is the hover's content
+	Contents []interface{} `json:"contents"`
+
+	// Range an optional range is a range inside a text document
+	// that is used to visualize a hover, e.g. by changing the background color.
+	Range lsp.Range `json:"range,omitempty"`
+}
+
+type RPCHoverAlternate struct {
+	RPCVersion string         `json:"jsonrpc"`
+	ID         int            `json:"id"`
+	Result     hoverAlternate `json:"result"`
+}
+
+func Position(x, y int) lsp.Position {
+	return lsp.Position{
+		Line:      float64(y),
+		Character: float64(x),
+	}
+}
+
+func (s *Server) DocumentFormat(filename string, options lsp.FormattingOptions) ([]lsp.TextEdit, error) {
+	if !s.capabilities.DocumentFormattingProvider {
+		return nil, ErrNotSupported
+	}
+	doc := lsp.TextDocumentIdentifier{
+		URI: uri.File(filename),
+	}
+
+	params := lsp.DocumentFormattingParams{
+		Options:      options,
+		TextDocument: doc,
+	}
+
+	resp, err := s.sendRequest(lsp.MethodTextDocumentFormatting, params)
+	if err != nil {
+		return nil, err
+	}
+
+	var r RPCFormat
+	err = json.Unmarshal(resp, &r)
+	if err != nil {
+		return nil, err
+	}
+
+	return r.Result, nil
+}
+
+func (s *Server) DocumentRangeFormat(filename string, r lsp.Range, options lsp.FormattingOptions) ([]lsp.TextEdit, error) {
+	if !s.capabilities.DocumentRangeFormattingProvider {
+		return nil, ErrNotSupported
+	}
+
+	doc := lsp.TextDocumentIdentifier{
+		URI: uri.File(filename),
+	}
+
+	params := lsp.DocumentRangeFormattingParams{
+		Options:      options,
+		Range:        r,
+		TextDocument: doc,
+	}
+
+	resp, err := s.sendRequest(lsp.MethodTextDocumentFormatting, params)
+	if err != nil {
+		return nil, err
+	}
+
+	var rpc RPCFormat
+	err = json.Unmarshal(resp, &rpc)
+	if err != nil {
+		return nil, err
+	}
+
+	return rpc.Result, nil
+}
+
+func (s *Server) Completion(filename string, pos lsp.Position) ([]lsp.CompletionItem, error) {
+	if s.capabilities.CompletionProvider == nil {
+		return nil, ErrNotSupported
+	}
+
+	cc := lsp.CompletionContext{
+		TriggerKind: lsp.Invoked,
+	}
+
+	docpos := lsp.TextDocumentPositionParams{
+		TextDocument: lsp.TextDocumentIdentifier{
+			URI: uri.File(filename),
+		},
+		Position: pos,
+	}
+
+	params := lsp.CompletionParams{
+		TextDocumentPositionParams: docpos,
+		Context:                    &cc,
+	}
+	resp, err := s.sendRequest(lsp.MethodTextDocumentCompletion, params)
+	if err != nil {
+		return nil, err
+	}
+
+	var r RPCCompletion
+	err = json.Unmarshal(resp, &r)
+	if err == nil {
+		return r.Result.Items, nil
+	}
+	var ra RPCCompletionAlternate
+	err = json.Unmarshal(resp, &ra)
+	if err != nil {
+		return nil, err
+	}
+	return ra.Result, nil
+}
+
+func (s *Server) CompletionResolve() {
+
+}
+
+func (s *Server) Hover(filename string, pos lsp.Position) (string, error) {
+	if !s.capabilities.HoverProvider {
+		return "", ErrNotSupported
+	}
+
+	params := lsp.TextDocumentPositionParams{
+		TextDocument: lsp.TextDocumentIdentifier{
+			URI: uri.File(filename),
+		},
+		Position: pos,
+	}
+
+	resp, err := s.sendRequest(lsp.MethodTextDocumentHover, params)
+	if err != nil {
+		return "", err
+	}
+
+	var r RPCHover
+	err = json.Unmarshal(resp, &r)
+	if err == nil {
+		return r.Result.Contents.Value, nil
+	}
+
+	var ra RPCHoverAlternate
+	err = json.Unmarshal(resp, &ra)
+	if err != nil {
+		return "", err
+	}
+
+	for _, c := range ra.Result.Contents {
+		switch t := c.(type) {
+		case string:
+			return t, nil
+		case map[string]interface{}:
+			s, ok := t["value"].(string)
+			if ok {
+				return s, nil
+			}
+		}
+	}
+	return "", nil
+}

internal/lsp/server.go

@@ -0,0 +1,322 @@
+package lsp
+
+import (
+	"bufio"
+	"encoding/json"
+	"errors"
+	"io"
+	"log"
+	"os"
+	"os/exec"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+
+	lsp "go.lsp.dev/protocol"
+	"go.lsp.dev/uri"
+)
+
+var activeServers map[string]*Server
+var slock sync.Mutex
+
+func init() {
+	activeServers = make(map[string]*Server)
+}
+
+func GetServer(l Language, dir string) *Server {
+	s, ok := activeServers[l.Command+"-"+dir]
+	if ok && s.Active {
+		return s
+	}
+	return nil
+}
+
+func ShutdownAllServers() {
+	for _, s := range activeServers {
+		if s.Active {
+			s.Shutdown()
+		}
+	}
+}
+
+type Server struct {
+	cmd          *exec.Cmd
+	stdin        io.WriteCloser
+	stdout       *bufio.Reader
+	language     *Language
+	capabilities lsp.ServerCapabilities
+	root         string
+	lock         sync.Mutex
+	Active       bool
+	requestID    int
+	responses    map[int]chan ([]byte)
+}
+
+type RPCRequest struct {
+	RPCVersion string      `json:"jsonrpc"`
+	ID         int         `json:"id"`
+	Method     string      `json:"method"`
+	Params     interface{} `json:"params"`
+}
+
+type RPCNotification struct {
+	RPCVersion string      `json:"jsonrpc"`
+	Method     string      `json:"method"`
+	Params     interface{} `json:"params"`
+}
+
+type RPCInit struct {
+	RPCVersion string               `json:"jsonrpc"`
+	ID         int                  `json:"id"`
+	Result     lsp.InitializeResult `json:"result"`
+}
+
+type RPCResult struct {
+	RPCVersion string `json:"jsonrpc"`
+	ID         int    `json:"id,omitempty"`
+	Method     string `json:"method,omitempty"`
+}
+
+func StartServer(l Language) (*Server, error) {
+	s := new(Server)
+
+	c := exec.Command(l.Command, l.Args...)
+
+	c.Stderr = log.Writer()
+
+	stdin, err := c.StdinPipe()
+	if err != nil {
+		log.Println("[micro-lsp]", err)
+		return nil, err
+	}
+
+	stdout, err := c.StdoutPipe()
+	if err != nil {
+		log.Println("[micro-lsp]", err)
+		return nil, err
+	}
+
+	err = c.Start()
+	if err != nil {
+		log.Println("[micro-lsp]", err)
+		return nil, err
+	}
+
+	s.cmd = c
+	s.stdin = stdin
+	s.stdout = bufio.NewReader(stdout)
+	s.language = &l
+	s.responses = make(map[int]chan []byte)
+
+	return s, nil
+}
+
+// Initialize performs the LSP initialization handshake
+// The directory must be an absolute path
+func (s *Server) Initialize(directory string) {
+	params := lsp.InitializeParams{
+		ProcessID: float64(os.Getpid()),
+		RootURI:   uri.File(directory),
+		Capabilities: lsp.ClientCapabilities{
+			Workspace: &lsp.WorkspaceClientCapabilities{
+				WorkspaceEdit: &lsp.WorkspaceClientCapabilitiesWorkspaceEdit{
+					DocumentChanges:    true,
+					ResourceOperations: []string{"create", "rename", "delete"},
+				},
+				ApplyEdit: true,
+			},
+			TextDocument: &lsp.TextDocumentClientCapabilities{
+				Formatting: &lsp.TextDocumentClientCapabilitiesFormatting{
+					DynamicRegistration: false,
+				},
+				Completion: &lsp.TextDocumentClientCapabilitiesCompletion{
+					DynamicRegistration: false,
+					CompletionItem: &lsp.TextDocumentClientCapabilitiesCompletionItem{
+						SnippetSupport:          false,
+						CommitCharactersSupport: false,
+						DocumentationFormat:     []lsp.MarkupKind{lsp.PlainText},
+						DeprecatedSupport:       false,
+						PreselectSupport:        false,
+					},
+					ContextSupport: false,
+				},
+				Hover: &lsp.TextDocumentClientCapabilitiesHover{
+					DynamicRegistration: false,
+					ContentFormat:       []lsp.MarkupKind{lsp.PlainText},
+				},
+			},
+		},
+	}
+
+	activeServers[s.language.Command+"-"+directory] = s
+	s.Active = true
+	s.root = directory
+
+	go s.receive()
+
+	s.lock.Lock()
+	go func() {
+		resp, err := s.sendRequest(lsp.MethodInitialize, params)
+		if err != nil {
+			log.Println("[micro-lsp]", err)
+			s.Active = false
+			s.lock.Unlock()
+			return
+		}
+
+		// todo parse capabilities
+		log.Println("[micro-lsp] <<<", string(resp))
+
+		var r RPCInit
+		json.Unmarshal(resp, &r)
+
+		s.lock.Unlock()
+		err = s.sendNotification(lsp.MethodInitialized, struct{}{})
+		if err != nil {
+			log.Println("[micro-lsp]", err)
+		}
+
+		s.capabilities = r.Result.Capabilities
+	}()
+}
+
+func (s *Server) Shutdown() {
+	s.sendRequest(lsp.MethodShutdown, nil)
+	s.sendNotification(lsp.MethodExit, nil)
+	s.Active = false
+}
+
+func (s *Server) receive() {
+	for s.Active {
+		resp, err := s.receiveMessage()
+		if err == io.EOF {
+			log.Println("Received EOF, shutting down")
+			s.Active = false
+			return
+		}
+		if err != nil {
+			log.Println("[micro-lsp,error]", err)
+			continue
+		}
+		log.Println("[micro-lsp] <<<", string(resp))
+
+		var r RPCResult
+		err = json.Unmarshal(resp, &r)
+		if err != nil {
+			log.Println("[micro-lsp]", err)
+			continue
+		}
+
+		switch r.Method {
+		case lsp.MethodWindowLogMessage:
+			// TODO
+		case lsp.MethodTextDocumentPublishDiagnostics:
+			// TODO
+		case "":
+			// Response
+			if _, ok := s.responses[r.ID]; ok {
+				log.Println("[micro-lsp] Got response for", r.ID)
+				s.responses[r.ID] <- resp
+			}
+		}
+	}
+}
+
+func (s *Server) receiveMessage() ([]byte, error) {
+	n := -1
+	for {
+		b, err := s.stdout.ReadBytes('\n')
+		if err != nil {
+			return nil, err
+		}
+		headerline := strings.TrimSpace(string(b))
+		if len(headerline) == 0 {
+			break
+		}
+		if strings.HasPrefix(headerline, "Content-Length:") {
+			split := strings.Split(headerline, ":")
+			if len(split) <= 1 {
+				break
+			}
+			n, err = strconv.Atoi(strings.TrimSpace(split[1]))
+			if err != nil {
+				return nil, err
+			}
+		}
+	}
+
+	if n <= 0 {
+		return []byte{}, nil
+	}
+
+	bytes := make([]byte, n)
+	_, err := io.ReadFull(s.stdout, bytes)
+	if err != nil {
+		log.Println("[micro-lsp]", err)
+	}
+	return bytes, err
+}
+
+func (s *Server) sendNotification(method string, params interface{}) error {
+	m := RPCNotification{
+		RPCVersion: "2.0",
+		Method:     method,
+		Params:     params,
+	}
+
+	s.lock.Lock()
+	go s.sendMessageUnlock(m)
+	return nil
+}
+
+func (s *Server) sendRequest(method string, params interface{}) ([]byte, error) {
+	id := s.requestID
+	s.requestID++
+	r := make(chan []byte)
+	s.responses[id] = r
+
+	m := RPCRequest{
+		RPCVersion: "2.0",
+		ID:         id,
+		Method:     method,
+		Params:     params,
+	}
+
+	err := s.sendMessage(m)
+	if err != nil {
+		return nil, err
+	}
+
+	var bytes []byte
+	select {
+	case bytes = <-r:
+	case <-time.After(5 * time.Second):
+		err = errors.New("Request timed out")
+	}
+	delete(s.responses, id)
+
+	return bytes, err
+}
+
+func (s *Server) sendMessage(m interface{}) error {
+	msg, err := json.Marshal(m)
+	if err != nil {
+		return err
+	}
+
+	log.Println("[micro-lsp] >>>", string(msg))
+
+	// encode header and proper line endings
+	msg = append(msg, '\r', '\n')
+	header := []byte("Content-Length: " + strconv.Itoa(len(msg)) + "\r\n\r\n")
+	msg = append(header, msg...)
+
+	_, err = s.stdin.Write(msg)
+	return err
+}
+
+func (s *Server) sendMessageUnlock(m interface{}) error {
+	defer s.lock.Unlock()
+	return s.sendMessage(m)
+}

internal/lsp/servers_yaml.go

@@ -0,0 +1,67 @@
+package lsp
+
+var servers_internal = []byte(`language:
+  rust:
+    command: rls
+    install: [["rustup", "update"], ["rustup", "component", "add", "rls", "rust-analysis", "rust-src"]]
+  javascript:
+    command: typescript-language-server
+    args: ["--stdio"]
+    install: [["npm", "install", "-g", "typescript-language-server"]]
+  typescript:
+    command: typescript-language-server
+    args: ["--stdio"]
+    install: [["npm", "install", "-g", "typescript-language-server"]]
+  html:
+    command: html-languageserver
+    args: ["--stdio"]
+    install: [["npm", "install", "-g", "vscode-html-languageserver-bin"]]
+  ocaml:
+    command: ocaml-language-server
+    args: ["--stdio"]
+    install: [["npm", "install", "-g", "ocaml-language-server"]]
+  python:
+    command: pyls
+    install: [["pip", "install", "python-language-server"]]
+  c:
+    command: clangd
+    args: []
+  cpp:
+    command: clangd
+    args: []
+  haskell:
+    command: hie
+    args: ["--lsp"]
+  go:
+    command: gopls
+    args: ["serve"]
+    install: [["go", "get", "-u", "golang.org/x/tools/gopls"]]
+  dart:
+    command: dart_language_server
+    install: [["pub", "global", "activate", "dart_language_server"]]
+  ruby:
+    command: solargraph
+    args: ["stdio"]
+    install: [["gem", "install", "solargraph"]]
+  css:
+    command: css-languageserver
+    args: ["--stdio"]
+    install: [["npm", "install", "-g", "vscode-css-languageserver-bin"]]
+  scss:
+    command: css-languageserver
+    args: ["--stdio"]
+    install: [["npm", "install", "-g", "vscode-css-languageserver-bin"]]
+  viml:
+    command: vim-language-server
+    args: ["--stdio"]
+    install: [["npm", "install", "-g", "vim-language-server"]]
+  purescript:
+    command: purescript-language-server
+    args: ["--stdio"]
+    install: [["npm", "install", "-g", "purescript-language-server"]]
+  verilog:
+    command: svls
+    install: [["cargo", "install", "svls"]]
+  d:
+    command: serve-d
+`)

internal/lua/lua.go

@@ -15,14 +15,17 @@ import (
 	"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 +72,8 @@ func Import(pkg string) *lua.LTable {
 		return importTime()
 	case "unicode/utf8", "utf8":
 		return importUtf8()
+	case "humanize":
+		return importHumanize()
 	default:
 		return nil
 	}
@@ -556,3 +561,12 @@ 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
+}

internal/screen/screen.go

@@ -1,12 +1,12 @@
 package screen
 
 import (
-	"fmt"
+	"errors"
 	"os"
 	"sync"
 
-	"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"
 	"github.com/zyedidia/tcell"
 )
 
@@ -18,12 +18,15 @@ import (
 // same time too.
 var Screen tcell.Screen
 
+// 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
+// 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
+var drawChan chan bool
 
 // Lock locks the screen lock
 func Lock() {
@@ -37,7 +40,16 @@ func 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 {
@@ -88,6 +100,10 @@ func ShowCursor(x, y int) {
 // 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 util.FakeCursor && lastCursor.x == x && lastCursor.y == y {
 		lastCursor.r = mainc
@@ -117,8 +133,8 @@ 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"
@@ -127,20 +143,56 @@ func Init() {
 		os.Setenv("TCELL_TRUECOLOR", "disable")
 	}
 
+	var oldTerm string
+	if config.GetGlobalOption("xterm").(bool) {
+		oldTerm = os.Getenv("TERM")
+		os.Setenv("TERM", "xterm-256color")
+	}
+
 	// Initilize tcell
 	var err error
 	Screen, err = tcell.NewScreen()
 	if err != nil {
-		fmt.Println(err)
-		fmt.Println("Fatal: Micro could not initialize a Screen.")
-		os.Exit(1)
+		return err
 	}
 	if err = Screen.Init(); err != nil {
-		fmt.Println(err)
-		os.Exit(1)
+		return err
+	}
+
+	Screen.SetPaste(config.GetGlobalOption("paste").(bool))
+
+	// restore TERM
+	if config.GetGlobalOption("xterm").(bool) {
+		os.Setenv("TERM", oldTerm)
 	}
 
 	if config.GetGlobalOption("mouse").(bool) {
 		Screen.EnableMouse()
 	}
+
+	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

@@ -37,6 +37,12 @@ type CallbackFile struct {
 	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
@@ -47,13 +53,13 @@ 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 func(string, []interface{}), 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 func(string, []interface{}), 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
@@ -67,6 +73,7 @@ func JobSpawn(cmdName string, cmdArgs []string, onStdout, onStderr, onExit func(
 	} else {
 		proc.Stderr = &outbuf
 	}
+	stdin, _ := proc.StdinPipe()
 
 	go func() {
 		// Run the process in the background and create the onExit callback
@@ -75,20 +82,15 @@ func JobSpawn(cmdName string, cmdArgs []string, onStdout, onStderr, onExit func(
 		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))
+func JobSend(j *Job, data string) {
+	j.Stdin.Write([]byte(data))
 }

internal/shell/shell.go

@@ -11,7 +11,7 @@ import (
 	"strings"
 
 	shellquote "github.com/kballard/go-shellquote"
-	"github.com/zyedidia/micro/internal/screen"
+	"github.com/zyedidia/micro/v2/internal/screen"
 )
 
 // ExecCommand executes a command using exec

internal/shell/terminal.go

@@ -5,8 +5,8 @@ import (
 	"os/exec"
 	"strconv"
 
-	"github.com/zyedidia/micro/internal/buffer"
-	"github.com/zyedidia/micro/internal/screen"
+	"github.com/zyedidia/micro/v2/internal/buffer"
+	"github.com/zyedidia/micro/v2/internal/screen"
 	"github.com/zyedidia/terminal"
 )
 

internal/util/lua.go

@@ -1,15 +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:]
 
@@ -26,7 +22,7 @@ func LuaRuneAt(str string, runeidx int) string {
 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 {
@@ -40,6 +36,6 @@ func LuaGetLeadingWhitespace(s string) string {
 
 // 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

@@ -1,6 +1,7 @@
 package util
 
 import (
+	"bytes"
 	"errors"
 	"fmt"
 	"os"
@@ -12,7 +13,6 @@ import (
 	"strings"
 	"time"
 	"unicode"
-	"unicode/utf8"
 
 	"github.com/blang/semver"
 	runewidth "github.com/mattn/go-runewidth"
@@ -30,10 +30,13 @@ var (
 	// 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() {
@@ -43,9 +46,11 @@ func init() {
 		fmt.Println("Invalid version: ", Version, err)
 	}
 
-	if runtime.GOOS == "windows" {
+	_, 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
@@ -59,7 +64,7 @@ func SliceEnd(slc []byte, index int) []byte {
 			return slc[totalSize:]
 		}
 
-		_, size := utf8.DecodeRune(slc[totalSize:])
+		_, _, size := DecodeCharacter(slc[totalSize:])
 		totalSize += size
 		i++
 	}
@@ -77,7 +82,7 @@ func SliceEndStr(str string, index int) string {
 			return str[totalSize:]
 		}
 
-		_, size := utf8.DecodeRuneInString(str[totalSize:])
+		_, _, size := DecodeCharacterInString(str[totalSize:])
 		totalSize += size
 		i++
 	}
@@ -96,7 +101,7 @@ func SliceStart(slc []byte, index int) []byte {
 			return slc[:totalSize]
 		}
 
-		_, size := utf8.DecodeRune(slc[totalSize:])
+		_, _, size := DecodeCharacter(slc[totalSize:])
 		totalSize += size
 		i++
 	}
@@ -114,7 +119,7 @@ func SliceStartStr(str string, index int) string {
 			return str[:totalSize]
 		}
 
-		_, size := utf8.DecodeRuneInString(str[totalSize:])
+		_, _, size := DecodeCharacterInString(str[totalSize:])
 		totalSize += size
 		i++
 	}
@@ -130,7 +135,7 @@ 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 {
@@ -167,7 +172,7 @@ 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 {
@@ -260,7 +265,7 @@ 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
@@ -332,6 +337,10 @@ 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)
+	if runtime.GOOS == "windows" {
+		// ':' is not valid in a path name on Windows but is ok on Unix
+		path = strings.Replace(path, ":", "%", -1)
+	}
 	return strings.Replace(path, "/", "%", -1)
 }
 
@@ -339,7 +348,7 @@ func EscapePath(path string) string {
 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 {
@@ -365,7 +374,7 @@ 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 {
@@ -411,7 +420,11 @@ func Clamp(val, min, max int) int {
 }
 
 func IsNonAlphaNumeric(c rune) bool {
-	return !unicode.IsLetter(c) && !unicode.IsNumber(c)
+	return !unicode.IsLetter(c) && !unicode.IsNumber(c) && c != '_'
+}
+
+func IsAutocomplete(c rune) bool {
+	return !unicode.IsSpace(c) || !IsNonAlphaNumeric(c)
 }
 
 func ParseSpecial(s string) string {

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 {
@@ -112,7 +111,7 @@ func findIndex(regex *regexp.Regexp, skip *regexp.Regexp, str []byte, canMatchSt
 	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 {
@@ -148,7 +147,7 @@ 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 {
@@ -236,7 +235,7 @@ 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
@@ -336,11 +335,11 @@ 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
 		}

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
+}

runtime/colorschemes/atom-dark.micro

@@ -16,6 +16,9 @@ color-link tabbar "#1D1F21,#C5C8C6"
 color-link indent-char "#505050,#1D1F21"
 color-link line-number "#656866,#232526"
 color-link current-line-number "#656866,#1D1F21"
+color-link diff-added "#00AF00"
+color-link diff-modified "#FFAF00"
+color-link diff-deleted "#D70000"
 color-link gutter-error "#FF4444,#1D1F21"
 color-link gutter-warning "#EEEE77,#1D1F21"
 color-link cursor-line "#2D2F31"

runtime/colorschemes/bubblegum.micro

@@ -14,6 +14,9 @@ color-link underlined "underline 241,231"
 color-link todo "246,231"
 color-link statusline "241,254"
 color-link tabbar "241,254"
+color-link diff-added "34"
+color-link diff-modified "214"
+color-link diff-deleted "160"
 color-link gutter-error "197,231"
 color-link gutter-warning "134,231"
 color-link line-number "246,254"

runtime/colorschemes/cmc-16.micro

@@ -33,6 +33,9 @@ color-link statusline "white,blue"
 color-link tabbar "white,blue"
 color-link current-line-number "red"
 color-link current-line-number.scroller "red"
+color-link diff-added "green"
+color-link diff-modified "yellow"
+color-link diff-deleted "red"
 color-link gutter-error ",red"
 color-link gutter-warning "red"
 color-link color-column "cyan"

runtime/colorschemes/cmc-tc.micro

@@ -28,9 +28,12 @@ color-link statusline "#aaaaaa,#8a496b"
 color-link tabbar "#aaaaaa,#8a496b"
 color-link current-line-number "bold #e34234,#424549"
 color-link current-line-number.scroller "red"
+color-link diff-added "#00AF00"
+color-link diff-modified "#FFAF00"
+color-link diff-deleted "#D70000"
 color-link gutter-error ",#e34234"
 color-link gutter-warning "#e34234"
 color-link color-column "#f26522"
 color-link constant.bool "bold #55ffff"
 color-link constant.bool.true "bold #85ff85"
-color-link constant.bool.false "bold #ff8585"
+color-link constant.bool.false "bold #ff8585"

runtime/colorschemes/darcula.micro

@@ -17,6 +17,9 @@ color-link tabbar "#242424,#CCCCCC"
 color-link indent-char "#4F4F4F,#242424"
 color-link line-number "#666666,#2C2C2C"
 color-link current-line-number "#666666,#242424"
+color-link diff-added "#00AF00"
+color-link diff-modified "#FFAF00"
+color-link diff-deleted "#D70000"
 color-link gutter-error "#CB4B16,#242424"
 color-link gutter-warning "#E6DB74,#242424"
 color-link cursor-line "#2C2C2C"

runtime/colorschemes/default.micro

@@ -17,6 +17,9 @@ color-link tabbar "#282828,#F8F8F2"
 color-link indent-char "#505050,#282828"
 color-link line-number "#AAAAAA,#323232"
 color-link current-line-number "#AAAAAA,#282828"
+color-link diff-added "#00AF00"
+color-link diff-modified "#FFAF00"
+color-link diff-deleted "#D70000"
 color-link gutter-error "#CB4B16,#282828"
 color-link gutter-warning "#E6DB74,#282828"
 color-link cursor-line "#323232"

runtime/colorschemes/dukedark-tc.micro

@@ -0,0 +1,34 @@
+color-link color-column "#001e28"
+color-link comment "#608b4e,#001e28"
+color-link constant.bool "#fd971f,#001e28"
+color-link constant "#fd971f,#001e28"
+color-link constant.string "#a0f000,#001e28"
+color-link constant.string.char "#a0f000,#001e28"
+color-link constant.string.url "#a0f000,#001e28"
+color-link current-line-number "bold #fd971f,#001e28"
+color-link cursor-line "#001923"
+color-link default "#ffffff,#001e28"
+color-link diff-added "#00c8a0,#001e28"
+color-link diff-modified "#fd971f,#001e28"
+color-link diff-deleted "#cb4b16,#001e28"
+color-link divider "#001e28,#d0d0d0"
+color-link error "#cb4b16,#001e28"
+color-link gutter-error "#cb4b16,#001e28"
+color-link gutter-warning "#fce94f,#001e28"
+color-link identifier "#00c8a0,#001e28"
+color-link identifier.class "#00c8a0,#001e28"
+color-link indent-char "#a0a0a0,#001e28"
+color-link line-number "#a0a0a0,#001923"
+color-link preproc "bold #5aaae6,#001e28"
+color-link special "#a6e22e,#001e28"
+color-link statement "bold #5aaae6,#001e28"
+color-link statusline "#ffffff,#0078c8"
+color-link symbol "#00c8a0,#001e28"
+color-link symbol.brackets "#ffffff,#001e28"
+color-link symbol.tag "bold #5aaae6,#001e28"
+color-link tabbar "#001e28,#ffffff"
+color-link todo "#fce94f,#001e28"
+color-link type "bold #3cc83c,#001e28"
+color-link type.keyword "bold #5aaae6,#001e28"
+color-link type.extended "#ffffff,#001e28"
+color-link underlined "#608b4e,#001e28"

runtime/colorschemes/dukelight-tc.micro

@@ -0,0 +1,34 @@
+color-link color-column "#f0f0f0"
+color-link comment "#3f7f5f,#f0f0f0"
+color-link constant.bool "#641e00,#f0f0f0"
+color-link constant "#641e00,#f0f0f0"
+color-link constant.string "#0000ff,#f0f0f0"
+color-link constant.string.char "#0000ff,#f0f0f0"
+color-link constant.string.url "#0000ff,#f0f0f0"
+color-link current-line-number "bold #004080,#f0f0f0"
+color-link cursor-line "#e6e6e6"
+color-link default "#000000,#f0f0f0"
+color-link diff-added "#008040,#f0f0f0"
+color-link diff-modified "#641e00,#f0f0f0"
+color-link diff-deleted "#500000,#f0f0f0"
+color-link divider "#f0f0f0,#004080"
+color-link error "#500000,#f0f0f0"
+color-link gutter-error "#500000,#f0f0f0"
+color-link gutter-warning "#dcc800,#f0f0f0"
+color-link identifier "bold #0078a0,#f0f0f0"
+color-link identifier.class "bold #0078a0,#f0f0f0"
+color-link indent-char "#404040,#f0f0f0"
+color-link line-number "#404040,#e6e6e6"
+color-link preproc "bold #780050,#f0f0f0"
+color-link special "bold #0078a0,#f0f0f0"
+color-link statement "bold #780050,#f0f0f0"
+color-link statusline "#ffffff,#0078c8"
+color-link symbol "bold #0078a0,#f0f0f0"
+color-link symbol.brackets "#000000,#f0f0f0"
+color-link symbol.tag "bold #780050,#f0f0f0"
+color-link tabbar "#f0f0f0,#004080"
+color-link todo "#dcc800,#f0f0f0"
+color-link type "bold #004080,#f0f0f0"
+color-link type.keyword "bold #780050,#f0f0f0"
+color-link type.extended "#000000,#f0f0f0"
+color-link underlined "#3f7f5f,#f0f0f0"

runtime/colorschemes/dukeubuntu-tc.micro

@@ -0,0 +1,34 @@
+color-link color-column "#2d0023"
+color-link comment "#886484,#2d0023"
+color-link constant.bool "#fd971f,#2d0023"
+color-link constant "#fd971f,#2d0023"
+color-link constant.string "#a0f000,#2d0023"
+color-link constant.string.char "#a0f000,#2d0023"
+color-link constant.string.url "#a0f000,#2d0023"
+color-link current-line-number "bold #fd971f,#2d0023"
+color-link cursor-line "#230019"
+color-link default "#ffffff,#2d0023"
+color-link diff-added "#00c8a0,#2d0023"
+color-link diff-modified "#fd971f,#2d0023"
+color-link diff-deleted "#cb4b16,#2d0023"
+color-link divider "#2d0023,#d0d0d0"
+color-link error "#cb4b16,#2d0023"
+color-link gutter-error "#cb4b16,#2d0023"
+color-link gutter-warning "#fce94f,#2d0023"
+color-link identifier "#00c8a0,#2d0023"
+color-link identifier.class "#00c8a0,#2d0023"
+color-link indent-char "#a0a0a0,#2d0023"
+color-link line-number "#a0a0a0,#230019"
+color-link preproc "bold #5aaae6,#2d0023"
+color-link special "#a6e22e,#2d0023"
+color-link statement "bold #5aaae6,#2d0023"
+color-link statusline "#ffffff,#0078c8"
+color-link symbol "#00c8a0,#2d0023"
+color-link symbol.brackets "#ffffff,#2d0023"
+color-link symbol.tag "bold #5aaae6,#2d0023"
+color-link tabbar "#2d0023,#ffffff"
+color-link todo "#fce94f,#2d0023"
+color-link type "bold #3cc83c,#2d0023"
+color-link type.keyword "bold #5aaae6,#2d0023"
+color-link type.extended "#ffffff,#2d0023"
+color-link underlined "#886484,#2d0023"