Add support for COLORTERM

Fixes #1094

.editorconfig

@@ -0,0 +1,7 @@
+# See http://editorconfig.org
+
+# In Go files we indent with tabs but still 
+# set indent_size to control the GitHub web viewer.  
+[*.go]
+indent_size=4
+

.gitignore

@@ -1,3 +1,5 @@
+.DS_Store
+
 micro
 !cmd/micro
 binaries/
@@ -5,4 +7,3 @@ tmp.sh
 test/
 .idea/
 packages/
-cmd/micro/vendor

.gitmodules

@@ -0,0 +1,72 @@
+[submodule "cmd/micro/vendor/github.com/blang/semver"]
+	path = cmd/micro/vendor/github.com/blang/semver
+	url = https://github.com/blang/semver
+[submodule "cmd/micro/vendor/github.com/dustin/go-humanize"]
+	path = cmd/micro/vendor/github.com/dustin/go-humanize
+	url = https://github.com/dustin/go-humanize
+[submodule "cmd/micro/vendor/github.com/go-errors/errors"]
+	path = cmd/micro/vendor/github.com/go-errors/errors
+	url = https://github.com/go-errors/errors
+[submodule "cmd/micro/vendor/github.com/mattn/go-isatty"]
+	path = cmd/micro/vendor/github.com/mattn/go-isatty
+	url = https://github.com/mattn/go-isatty
+[submodule "cmd/micro/vendor/github.com/mattn/go-runewidth"]
+	path = cmd/micro/vendor/github.com/mattn/go-runewidth
+	url = https://github.com/mattn/go-runewidth
+[submodule "cmd/micro/vendor/github.com/mitchellh/go-homedir"]
+	path = cmd/micro/vendor/github.com/mitchellh/go-homedir
+	url = https://github.com/mitchellh/go-homedir
+[submodule "cmd/micro/vendor/github.com/sergi/go-diff"]
+	path = cmd/micro/vendor/github.com/sergi/go-diff
+	url = https://github.com/sergi/go-diff
+[submodule "cmd/micro/vendor/github.com/yuin/gopher-lua"]
+	path = cmd/micro/vendor/github.com/yuin/gopher-lua
+	url = https://github.com/yuin/gopher-lua
+[submodule "cmd/micro/vendor/golang.org/x/net"]
+	path = cmd/micro/vendor/golang.org/x/net
+	url = https://go.googlesource.com/net
+[submodule "cmd/micro/vendor/github.com/zyedidia/clipboard"]
+	path = cmd/micro/vendor/github.com/zyedidia/clipboard
+	url = https://github.com/zyedidia/clipboard
+[submodule "cmd/micro/vendor/github.com/zyedidia/glob"]
+	path = cmd/micro/vendor/github.com/zyedidia/glob
+	url = https://github.com/zyedidia/glob
+[submodule "cmd/micro/vendor/github.com/zyedidia/tcell"]
+	path = cmd/micro/vendor/github.com/zyedidia/tcell
+	url = https://github.com/zyedidia/tcell
+[submodule "cmd/micro/vendor/github.com/gdamore/encoding"]
+	path = cmd/micro/vendor/github.com/gdamore/encoding
+	url = https://github.com/gdamore/encoding
+[submodule "cmd/micro/vendor/golang.org/x/text"]
+	path = cmd/micro/vendor/golang.org/x/text
+	url = https://go.googlesource.com/text
+[submodule "cmd/micro/vendor/github.com/lucasb-eyer/go-colorful"]
+	path = cmd/micro/vendor/github.com/lucasb-eyer/go-colorful
+	url = https://github.com/lucasb-eyer/go-colorful
+[submodule "cmd/micro/vendor/layeh.com/gopher-luar"]
+	path = cmd/micro/vendor/layeh.com/gopher-luar
+	url = https://github.com/layeh/gopher-luar
+[submodule "cmd/micro/vendor/gopkg.in/yaml.v2"]
+	path = cmd/micro/vendor/gopkg.in/yaml.v2
+	url = https://gopkg.in/yaml.v2
+[submodule "cmd/micro/vendor/github.com/zyedidia/poller"]
+	path = cmd/micro/vendor/github.com/zyedidia/poller
+	url = https://github.com/zyedidia/poller
+[submodule "cmd/micro/vendor/github.com/flynn/json5"]
+	path = cmd/micro/vendor/github.com/flynn/json5
+	url = https://github.com/flynn/json5
+[submodule "cmd/micro/vendor/github.com/zyedidia/terminal"]
+	path = cmd/micro/vendor/github.com/zyedidia/terminal
+	url = https://github.com/zyedidia/terminal
+[submodule "cmd/micro/vendor/github.com/zyedidia/pty"]
+	path = cmd/micro/vendor/github.com/zyedidia/pty
+	url = https://github.com/zyedidia/pty
+[submodule "cmd/micro/vendor/github.com/smartystreets/goconvey"]
+	path = cmd/micro/vendor/github.com/smartystreets/goconvey
+	url = https://github.com/smartystreets/goconvey
+[submodule "cmd/micro/vendor/github.com/jtolds/gls"]
+	path = cmd/micro/vendor/github.com/jtolds/gls
+	url = https://github.com/jtolds/gls
+[submodule "cmd/micro/vendor/github.com/smartystreets/assertions"]
+	path = cmd/micro/vendor/github.com/smartystreets/assertions
+	url = https://github.com/smartystreets/assertions

LICENSE

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

LICENSE-THIRD-PARTY

@@ -58,7 +58,6 @@ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 THE SOFTWARE.
 
 
-
 github.com/gdamore/encoding/LICENSE
 ================
 
@@ -395,7 +394,9 @@ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 SOFTWARE.
 
 
-github.com/zyedidia/clipboard/LICENSE
+github.com/atotto/clipboard/LICENSE
+================
+github.com/zyedidia/clipboard/LICENSE (fork)
 ================
 
 Copyright (c) 2013 Ato Araki. All rights reserved.
@@ -427,7 +428,9 @@ THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 
-github.com/zyedidia/tcell/LICENSE
+github.com/gdamore/tcell/LICENSE
+================
+github.com/zyedidia/tcell/LICENSE (fork)
 ================
 
 
@@ -665,39 +668,6 @@ THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-
-golang.org/x/sys/LICENSE
-================
-
-Copyright (c) 2009 The Go Authors. All rights reserved.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are
-met:
-
-   * Redistributions of source code must retain the above copyright
-notice, this list of conditions and the following disclaimer.
-   * Redistributions in binary form must reproduce the above
-copyright notice, this list of conditions and the following disclaimer
-in the documentation and/or other materials provided with the
-distribution.
-   * Neither the name of Google Inc. nor the names of its
-contributors may be used to endorse or promote products derived from
-this software without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-
 golang.org/x/text/LICENSE
 ================
 
@@ -1106,3 +1076,311 @@ Exhibit B - "Incompatible With Secondary Licenses" Notice
 
   This Source Code Form is "Incompatible With Secondary Licenses", as
   defined by the Mozilla Public License, v. 2.0.
+
+github.com/flynn/json5/LICENSE
+================
+
+Decoder code based on package encoding/json from the Go language.
+
+Copyright (c) 2012 The Go Authors. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+   * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+   * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+   * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+
+Test data based on the parse cases from https://github.com/json5/json5
+
+Copyright (c) 2012-2016 Aseem Kishore, and others.
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+github.com/james4k/terminal/LICENSE
+================
+github.com/zyedidia/terminal/LICENSE (fork)
+================
+
+Copyright (C) 2013 James Gray
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without liitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and thismssion notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+github.com/kr/pty/License
+================
+github.com/zyedidia/pty/License (fork)
+================
+
+Copyright (c) 2011 Keith Rarick
+
+Permission is hereby granted, free of charge, to any person
+obtaining a copy of this software and associated
+documentation files (the "Software"), to deal in the
+Software without restriction, including without limitation
+the rights to use, copy, modify, merge, publish, distribute,
+sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall
+be included in all copies or substantial portions of the
+Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
+KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
+PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS
+OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+github.com/smartystreets/goconvey/LICENSE.md
+================
+
+Copyright (c) 2016 SmartyStreets, LLC
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+NOTE: Various optional and subordinate components carry their own licensing
+requirements and restrictions.  Use of those components is subject to the terms
+and conditions outlined the respective license of each component.
+
+github.com/smartystreets/assertions/LICENSE.md
+================
+
+Copyright (c) 2016 SmartyStreets, LLC
+
+Permission is hereby granted, free of charge, to any person obtaining a copy 
+of this software and associated documentation files (the "Software"), to deal 
+in the Software without restriction, including without limitation the rights 
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 
+copies of the Software, and to permit persons to whom the Software is 
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all 
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 
+SOFTWARE.
+
+NOTE: Various optional and subordinate components carry their own licensing
+requirements and restrictions.  Use of those components is subject to the terms
+and conditions outlined the respective license of each component.
+
+github.com/jtolds/gls/LICENSE
+================
+
+Copyright (c) 2013, Space Monkey, Inc.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+github.com/npat-efault/poller/LICENSE.txt
+================
+github.com/zyedidia/poller/LICENSE.txt (fork)
+================
+
+Copyright (c) 2014, Nick Patavalis (npat@efault.net)
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+* Redistributions of source code must retain the above copyright notice, this
+  list of conditions and the following disclaimer.
+
+* Redistributions in binary form must reproduce the above copyright notice,
+  this list of conditions and the following disclaimer in the documentation
+  and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+github.com/zyedidia/glob
+================
+
+Glob is licensed under the MIT "Expat" License:
+
+Copyright (c) 2016: Zachary Yedidia.
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+github.com/dustin/go-humanize/LICENSE
+================
+
+Copyright (c) 2005-2008  Dustin Sallings <dustin@spy.net>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+<http://www.opensource.org/licenses/mit-license.php>
+
+gopkg.in/yaml.v2/LICENSE
+================
+
+Copyright 2011-2016 Canonical Ltd.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+
+github.com/lucasb-eyer/go-colorful/LICENSE
+================
+
+Copyright (c) 2013 Lucas Beyer
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

Makefile

@@ -11,7 +11,7 @@ ADDITIONAL_GO_LINKER_FLAGS := $(shell GOOS=$(shell go env GOHOSTOS) \
 GOBIN ?= $(shell go env GOPATH)/bin
 
 # Builds micro after checking dependencies but without updating the runtime
-build: deps
+build: update
 	go build -ldflags "-s -w -X main.Version=$(VERSION) -X main.CommitHash=$(HASH) -X 'main.CompileDate=$(DATE)' $(ADDITIONAL_GO_LINKER_FLAGS)" ./cmd/micro
 
 # Builds micro after building the runtime and checking dependencies
@@ -22,7 +22,7 @@ build-quick:
 	go build -ldflags "-s -w -X main.Version=$(VERSION) -X main.CommitHash=$(HASH) -X 'main.CompileDate=$(DATE)' $(ADDITIONAL_GO_LINKER_FLAGS)" ./cmd/micro
 
 # Same as 'build' but installs to $GOBIN afterward
-install: deps
+install: update
 	go install -ldflags "-s -w -X main.Version=$(VERSION) -X main.CommitHash=$(HASH) -X 'main.CompileDate=$(DATE)' $(ADDITIONAL_GO_LINKER_FLAGS)" ./cmd/micro
 
 # Same as 'build-all' but installs to $GOBIN afterward
@@ -32,13 +32,9 @@ install-all: runtime install
 install-quick:
 	go install -ldflags "-s -w -X main.Version=$(VERSION) -X main.CommitHash=$(HASH) -X 'main.CompileDate=$(DATE)' $(ADDITIONAL_GO_LINKER_FLAGS)"  ./cmd/micro
 
-# Checks for dependencies
-deps:
-	go get -d ./cmd/micro
-
 update:
 	git pull
-	go get -u -d ./cmd/micro
+	git submodule update --init
 
 # Builds the runtime
 runtime:
@@ -47,7 +43,6 @@ runtime:
 	mv runtime.go cmd/micro
 
 test:
-	go get -d ./cmd/micro
 	go test ./cmd/micro
 
 clean:

README.md

@@ -4,6 +4,7 @@
 [![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)
 [![MIT License](https://img.shields.io/badge/license-MIT-blue.svg)](https://github.com/zyedidia/micro/blob/master/LICENSE)
+[![Snap Status](https://build.snapcraft.io/badge/zyedidia/micro.svg)](https://build.snapcraft.io/user/zyedidia/micro)
 
 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.
@@ -19,15 +20,33 @@ To see more screenshots of micro, showcasing all of the default colorschemes, se
 
 You can also check out the website for Micro at https://micro-editor.github.io.
 
+# 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)
+  - [Linux clipboard support](#linux-clipboard-support)
+  - [Colors and syntax highlighting](#colors-and-syntax-highlighting)
+  - [Plan9, Cygwin](#plan9-cygwin)
+- [Usage](#usage)
+- [Documentation and Help](#documentation-and-help)
+- [Contributing](#contributing)
+
+- - -
+
 # 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)
@@ -48,7 +67,7 @@ You can also check out the website for Micro at https://micro-editor.github.io.
 * Macros
 * Common editor things such as undo/redo, line numbers, Unicode support, softwrap...
 
-Although not yet implemented, I hope to add more features such as autocompletion ([#174](https://github.com/zyedidia/micro/issues/174)), and multiple cursors ([#5](https://github.com/zyedidia/micro/issues/5)) in the future.
+Although not yet implemented, I hope to add more features such as autocompletion ([#174](https://github.com/zyedidia/micro/issues/174)) or a tree view ([#249](https://github.com/zyedidia/micro/issues/249)) in the future.
 
 # Installation
 
@@ -67,7 +86,19 @@ 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`.
 
-### Package Managers
+### 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)).
+
+Then you can easily install micro:
+
+    $ curl https://getmic.ro | bash
+
+The script will install the micro binary to the current directory.
+
+See the [Github page](https://github.com/benweissmann/getmic.ro) for more information.
+
+### Package managers
 
 You can install micro using Homebrew on Mac:
 
@@ -75,39 +106,51 @@ You can install micro using Homebrew on Mac:
 brew install micro
 ```
 
-On Windows, you can install micro through Chocolatey:
+On Windows, you can install micro through [Chocolatey](https://chocolatey.org/) or [Scoop](https://github.com/lukesampson/scoop):
 
 ```
 choco install micro
 ```
 
+or
+
+```
+scoop install micro
+```
+
 On Linux, you can install micro through [snap](https://snapcraft.io/docs/core/install)
 
 ```
-snap install micro --beta
+snap install micro --classic
+```
+
+On OpenBSD, micro is available in the ports tree. It is also available as a binary package.
+
+```
+pkg_add -v micro
 ```
 
 ### Building from source
 
 If your operating system does not have a binary release, but does run Go, you can build from source.
 
-Make sure that you have Go version 1.5 or greater (Go 1.4 will work if your version supports CGO) and that your `GOPATH` env variable is set (I recommand setting it to `~/go` if you don't have one).
+Make sure that you have Go version 1.5 or greater (Go 1.4 will work if your version supports CGO) and that your `GOPATH` env variable is set (I recommend setting it to `~/go` if you don't have one).
 
 ```
-go get -d github.com/zyedidia/micro/...
+go get -d github.com/zyedidia/micro/cmd/micro
 cd $GOPATH/src/github.com/zyedidia/micro
 make install
 ```
 
-Please make sure that when you are working with micro's code, you are working on your `GOPATH`.
-
 The binary will then be installed to `$GOPATH/bin` (or your `$GOBIN`).
 
+Please make sure that when you are working with micro's code, you are working on your `GOPATH`.
+
 You can install directly with `go get` (`go get -u github.com/zyedidia/micro/cmd/micro`) but this isn't recommended because it doesn't build micro with version information which is useful for the plugin manager.
 
 ### MacOS terminal
 
-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. The newest versions also support true color.
+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.
 
 ### Linux clipboard support
 
@@ -135,11 +178,11 @@ 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.
 
-### Plan9, NaCl, Cygwin
+### Plan9, Cygwin
 
 Please note that 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, NaCl, and Cygwin (although this may change in the future).
+Plan9, and Cygwin (although this may change in the future). Micro also doesn't support NaCl (but NaCl is deprecated anyways).
 
 # Usage
 

assets/logo.svg

@@ -0,0 +1,63 @@
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+<!-- Created with Inkscape (http://www.inkscape.org/) -->
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+   xmlns:svg="http://www.w3.org/2000/svg"
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+   height="128"
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+   sodipodi:docname="logo.svg">
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+    <rdf:RDF>
+      <cc:Work
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+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
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+        <dc:title></dc:title>
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+     inkscape:pageshadow="2"
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+     id="path3362"
+     inkscape:connector-curvature="0" />
+</svg>

assets/packaging/micro.1

@@ -0,0 +1,73 @@
+.\" 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"
+.SH NAME
+micro \- A modern and intuitive terminal-based text editor
+.SH SYNOPSIS
+.B micro
+.RB [OPTIONS]
+[FILE]\&...
+
+.SH DESCRIPTION
+
+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.
+
+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).
+
+.SH OPTIONS
+.PP
+\-config-dir dir
+.RS 4
+Specify a custom location for the configuration directory
+.RE
+.PP
+\-startpos 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
+\-version
+.RS 4
+Show the version number and information
+.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.
+
+.SH NOTICE
+This manpage is intended only to serve as a quick guide to the invocation of 
+micro and is not intended to replace the full documentation included with micro
+which can be accessed from within micro. Micro tells you what key combination to
+press to get help in the lower right.
+
+.SH BUGS
+A comprehensive list of bugs will not be listed in this manpage. See the Github
+page at \fBhttps://github.com/zyedidia/micro/issues\fP for a list of known bugs
+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.

assets/packaging/micro.desktop

@@ -0,0 +1,15 @@
+[Desktop Entry]
+
+Name=Micro
+GenericName=Text Editor
+Comment=Edit text files in a terminal
+
+Icon=micro
+Type=Application
+Categories=terminal;TextEditor;
+Keywords=text;editor;syntax;terminal;
+
+Exec=micro %U
+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/Gopkg.lock

@@ -1,123 +0,0 @@
-# This file is autogenerated, do not edit; changes may be undone by the next 'dep ensure'.
-
-
-[[projects]]
-  branch = "master"
-  name = "github.com/blang/semver"
-  packages = ["."]
-  revision = "4a1e882c79dcf4ec00d2e29fac74b9c8938d5052"
-
-[[projects]]
-  branch = "master"
-  name = "github.com/dustin/go-humanize"
-  packages = ["."]
-  revision = "259d2a102b871d17f30e3cd9881a642961a1e486"
-
-[[projects]]
-  branch = "master"
-  name = "github.com/gdamore/encoding"
-  packages = ["."]
-  revision = "b23993cbb6353f0e6aa98d0ee318a34728f628b9"
-
-[[projects]]
-  branch = "master"
-  name = "github.com/go-errors/errors"
-  packages = ["."]
-  revision = "8fa88b06e5974e97fbf9899a7f86a344bfd1f105"
-
-[[projects]]
-  branch = "master"
-  name = "github.com/lucasb-eyer/go-colorful"
-  packages = ["."]
-  revision = "9c2852a141bf4711e4276f8f119c90d0f20a556c"
-
-[[projects]]
-  branch = "master"
-  name = "github.com/mattn/go-isatty"
-  packages = ["."]
-  revision = "fc9e8d8ef48496124e79ae0df75490096eccf6fe"
-
-[[projects]]
-  branch = "master"
-  name = "github.com/mattn/go-runewidth"
-  packages = ["."]
-  revision = "97311d9f7767e3d6f422ea06661bc2c7a19e8a5d"
-
-[[projects]]
-  branch = "master"
-  name = "github.com/mitchellh/go-homedir"
-  packages = ["."]
-  revision = "b8bc1bf767474819792c23f32d8286a45736f1c6"
-
-[[projects]]
-  branch = "master"
-  name = "github.com/sergi/go-diff"
-  packages = ["diffmatchpatch"]
-  revision = "feef008d51ad2b3778f85d387ccf91735543008d"
-
-[[projects]]
-  branch = "master"
-  name = "github.com/yuin/gopher-lua"
-  packages = [".","ast","parse","pm"]
-  revision = "b402f3114ec730d8bddb074a6c137309f561aa78"
-
-[[projects]]
-  branch = "master"
-  name = "github.com/zyedidia/clipboard"
-  packages = ["."]
-  revision = "adacf416cec40266b051e7bc096c52951f2725e9"
-
-[[projects]]
-  branch = "master"
-  name = "github.com/zyedidia/glob"
-  packages = ["."]
-  revision = "72567a468b2481490f359cdfb015231389e0bf9d"
-
-[[projects]]
-  branch = "master"
-  name = "github.com/zyedidia/json5"
-  packages = ["encoding/json5"]
-  revision = "2518f8beebde6814f2d30d566260480d2ded2f76"
-
-[[projects]]
-  branch = "master"
-  name = "github.com/zyedidia/tcell"
-  packages = [".","encoding"]
-  revision = "7095cc1c7f4173ae48314d80878e9985a0658889"
-
-[[projects]]
-  branch = "master"
-  name = "golang.org/x/net"
-  packages = ["context"]
-  revision = "007e530097ad7f954752df63046b4036f98ba6a6"
-
-[[projects]]
-  branch = "master"
-  name = "golang.org/x/sys"
-  packages = ["unix"]
-  revision = "d4feaf1a7e61e1d9e79e6c4e76c6349e9cab0a03"
-
-[[projects]]
-  branch = "master"
-  name = "golang.org/x/text"
-  packages = ["encoding","encoding/charmap","encoding/internal","encoding/internal/identifier","encoding/japanese","encoding/korean","encoding/simplifiedchinese","encoding/traditionalchinese","internal/gen","transform","unicode/cldr"]
-  revision = "506f9d5c962f284575e88337e7d9296d27e729d3"
-
-[[projects]]
-  branch = "v2"
-  name = "gopkg.in/yaml.v2"
-  packages = ["."]
-  revision = "a83829b6f1293c91addabc89d0571c246397bbf4"
-
-[[projects]]
-  branch = "master"
-  name = "layeh.com/gopher-luar"
-  packages = ["."]
-  revision = "80196fe2abc5682963fc7a5261f5a5d77509938b"
-
-[solve-meta]
-  analyzer-name = "dep"
-  analyzer-version = 1
-  inputs-digest = "aebc6aa50d78830f86e8964c1ebc1804c1f9603477ddba606717a972ca70d261"
-  solver-name = "gps-cdcl"
-  solver-version = 1

cmd/micro/Gopkg.toml

@@ -1,123 +0,0 @@
-
-## Gopkg.toml example (these lines may be deleted)
-
-## "metadata" defines metadata about the project that could be used by other independent
-## systems. The metadata defined here will be ignored by dep.
-# [metadata]
-# key1 = "value that convey data to other systems"
-# system1-data = "value that is used by a system"
-# system2-data = "value that is used by another system"
-
-## "required" lists a set of packages (not projects) that must be included in
-## Gopkg.lock. This list is merged with the set of packages imported by the current
-## project. Use it when your project needs a package it doesn't explicitly import -
-## including "main" packages.
-# required = ["github.com/user/thing/cmd/thing"]
-
-## "ignored" lists a set of packages (not projects) that are ignored when
-## dep statically analyzes source code. Ignored packages can be in this project,
-## or in a dependency.
-# ignored = ["github.com/user/project/badpkg"]
-
-## Constraints are rules for how directly imported projects
-## may be incorporated into the depgraph. They are respected by
-## dep whether coming from the Gopkg.toml of the current project or a dependency.
-# [[constraint]]
-## Required: the root import path of the project being constrained.
-# name = "github.com/user/project"
-#
-## Recommended: the version constraint to enforce for the project.
-## Only one of "branch", "version" or "revision" can be specified.
-# version = "1.0.0"
-# branch = "master"
-# revision = "abc123"
-#
-## Optional: an alternate location (URL or import path) for the project's source.
-# source = "https://github.com/myfork/package.git"
-#
-## "metadata" defines metadata about the dependency or override that could be used
-## by other independent systems. The metadata defined here will be ignored by dep.
-# [metadata]
-# key1 = "value that convey data to other systems"
-# system1-data = "value that is used by a system"
-# system2-data = "value that is used by another system"
-
-## Overrides have the same structure as [[constraint]], but supersede all
-## [[constraint]] declarations from all projects. Only [[override]] from
-## the current project's are applied.
-##
-## Overrides are a sledgehammer. Use them only as a last resort.
-# [[override]]
-## Required: the root import path of the project being constrained.
-# name = "github.com/user/project"
-#
-## Optional: specifying a version constraint override will cause all other
-## constraints on this project to be ignored; only the overridden constraint
-## need be satisfied.
-## Again, only one of "branch", "version" or "revision" can be specified.
-# version = "1.0.0"
-# branch = "master"
-# revision = "abc123"
-#
-## Optional: specifying an alternate source location as an override will
-## enforce that the alternate location is used for that project, regardless of
-## what source location any dependent projects specify.
-# source = "https://github.com/myfork/package.git"
-
-
-
-[[constraint]]
-  branch = "master"
-  name = "github.com/blang/semver"
-
-[[constraint]]
-  branch = "master"
-  name = "github.com/dustin/go-humanize"
-
-[[constraint]]
-  branch = "master"
-  name = "github.com/go-errors/errors"
-
-[[constraint]]
-  branch = "master"
-  name = "github.com/mattn/go-isatty"
-
-[[constraint]]
-  branch = "master"
-  name = "github.com/mattn/go-runewidth"
-
-[[constraint]]
-  branch = "master"
-  name = "github.com/mitchellh/go-homedir"
-
-[[constraint]]
-  branch = "master"
-  name = "github.com/sergi/go-diff"
-
-[[constraint]]
-  branch = "master"
-  name = "github.com/yuin/gopher-lua"
-
-[[constraint]]
-  branch = "master"
-  name = "github.com/zyedidia/clipboard"
-
-[[constraint]]
-  branch = "master"
-  name = "github.com/zyedidia/glob"
-
-[[constraint]]
-  branch = "master"
-  name = "github.com/zyedidia/json5"
-
-[[constraint]]
-  branch = "master"
-  name = "github.com/zyedidia/tcell"
-
-[[constraint]]
-  branch = "v2"
-  name = "gopkg.in/yaml.v2"
-
-[[constraint]]
-  branch = "master"
-  name = "layeh.com/gopher-luar"

cmd/micro/actions_other.go

@@ -1,9 +1,9 @@
-// +build !linux
+// +build plan9 nacl windows
 
 package main
 
 func (v *View) Suspend(usePlugin bool) bool {
-	messenger.Error("Suspend is only supported on Linux")
+	messenger.Error("Suspend is only supported on Posix")
 
 	return false
 }

cmd/micro/actions_posix.go

@@ -1,3 +1,5 @@
+// +build linux darwin dragonfly solaris openbsd netbsd freebsd
+
 package main
 
 import "syscall"
@@ -19,8 +21,7 @@ func (v *View) Suspend(usePlugin bool) bool {
 
 	// suspend the process
 	pid := syscall.Getpid()
-	tid := syscall.Gettid()
-	err := syscall.Tgkill(pid, tid, syscall.SIGSTOP)
+	err := syscall.Kill(pid, syscall.SIGSTOP)
 	if err != nil {
 		TermMessage(err)
 	}

cmd/micro/autocomplete.go

@@ -4,8 +4,6 @@ import (
 	"io/ioutil"
 	"os"
 	"strings"
-
-	"github.com/mitchellh/go-homedir"
 )
 
 var pluginCompletions []func(string) []string
@@ -22,13 +20,9 @@ func FileComplete(input string) (string, []string) {
 	var files []os.FileInfo
 	var err error
 	if len(dirs) > 1 {
-		home, _ := homedir.Dir()
-
 		directories := strings.Join(dirs[:len(dirs)-1], sep) + sep
 
-		if strings.HasPrefix(directories, "~") {
-			directories = strings.Replace(directories, "~", home, 1)
-		}
+		directories = ReplaceHome(directories)
 		files, err = ioutil.ReadDir(directories)
 	} else {
 		files, err = ioutil.ReadDir(".")
@@ -148,6 +142,63 @@ func OptionComplete(input string) (string, []string) {
 	return chosen, suggestions
 }
 
+// OptionValueComplete completes values for various options
+func OptionValueComplete(inputOpt, input string) (string, []string) {
+	inputOpt = strings.TrimSpace(inputOpt)
+	var suggestions []string
+	localSettings := DefaultLocalSettings()
+	var optionVal interface{}
+	for k, option := range globalSettings {
+		if k == inputOpt {
+			optionVal = option
+		}
+	}
+	for k, option := range localSettings {
+		if k == inputOpt {
+			optionVal = option
+		}
+	}
+
+	switch optionVal.(type) {
+	case bool:
+		if strings.HasPrefix("on", input) {
+			suggestions = append(suggestions, "on")
+		} else if strings.HasPrefix("true", input) {
+			suggestions = append(suggestions, "true")
+		}
+		if strings.HasPrefix("off", input) {
+			suggestions = append(suggestions, "off")
+		} else if strings.HasPrefix("false", input) {
+			suggestions = append(suggestions, "false")
+		}
+	case string:
+		switch inputOpt {
+		case "colorscheme":
+			_, suggestions = ColorschemeComplete(input)
+		case "fileformat":
+			if strings.HasPrefix("unix", input) {
+				suggestions = append(suggestions, "unix")
+			}
+			if strings.HasPrefix("dos", input) {
+				suggestions = append(suggestions, "dos")
+			}
+		case "sucmd":
+			if strings.HasPrefix("sudo", input) {
+				suggestions = append(suggestions, "sudo")
+			}
+			if strings.HasPrefix("doas", input) {
+				suggestions = append(suggestions, "doas")
+			}
+		}
+	}
+
+	var chosen string
+	if len(suggestions) == 1 {
+		chosen = suggestions[0]
+	}
+	return chosen, suggestions
+}
+
 // MakeCompletion registers a function from a plugin for autocomplete commands
 func MakeCompletion(function string) Completion {
 	pluginCompletions = append(pluginCompletions, LuaFunctionComplete(function))
@@ -169,6 +220,7 @@ func PluginComplete(complete Completion, input string) (chosen string, suggestio
 	return
 }
 
+// PluginCmdComplete completes with possible choices for the `> plugin` command
 func PluginCmdComplete(input string) (chosen string, suggestions []string) {
 	for _, cmd := range []string{"install", "remove", "search", "update", "list"} {
 		if strings.HasPrefix(cmd, input) {
@@ -182,6 +234,7 @@ func PluginCmdComplete(input string) (chosen string, suggestions []string) {
 	return chosen, suggestions
 }
 
+// PluginnameComplete completes with the names of loaded plugins
 func PluginNameComplete(input string) (chosen string, suggestions []string) {
 	for _, pp := range GetAllPluginPackages() {
 		if strings.HasPrefix(pp.Name, input) {

cmd/micro/bindings.go

@@ -1,101 +1,134 @@
 package main
 
 import (
+	"fmt"
 	"io/ioutil"
 	"os"
 	"strings"
+	"unicode"
 
-	"github.com/zyedidia/json5/encoding/json5"
+	"github.com/flynn/json5"
 	"github.com/zyedidia/tcell"
 )
 
+var bindingsStr map[string]string
 var bindings map[Key][]func(*View, bool) bool
+var mouseBindings map[Key][]func(*View, bool, *tcell.EventMouse) bool
 var helpBinding string
+var kmenuBinding string
+
+var mouseBindingActions = map[string]func(*View, bool, *tcell.EventMouse) bool{
+	"MousePress":       (*View).MousePress,
+	"MouseMultiCursor": (*View).MouseMultiCursor,
+}
 
 var bindingActions = map[string]func(*View, bool) bool{
-	"CursorUp":            (*View).CursorUp,
-	"CursorDown":          (*View).CursorDown,
-	"CursorPageUp":        (*View).CursorPageUp,
-	"CursorPageDown":      (*View).CursorPageDown,
-	"CursorLeft":          (*View).CursorLeft,
-	"CursorRight":         (*View).CursorRight,
-	"CursorStart":         (*View).CursorStart,
-	"CursorEnd":           (*View).CursorEnd,
-	"SelectToStart":       (*View).SelectToStart,
-	"SelectToEnd":         (*View).SelectToEnd,
-	"SelectUp":            (*View).SelectUp,
-	"SelectDown":          (*View).SelectDown,
-	"SelectLeft":          (*View).SelectLeft,
-	"SelectRight":         (*View).SelectRight,
-	"WordRight":           (*View).WordRight,
-	"WordLeft":            (*View).WordLeft,
-	"SelectWordRight":     (*View).SelectWordRight,
-	"SelectWordLeft":      (*View).SelectWordLeft,
-	"DeleteWordRight":     (*View).DeleteWordRight,
-	"DeleteWordLeft":      (*View).DeleteWordLeft,
-	"SelectToStartOfLine": (*View).SelectToStartOfLine,
-	"SelectToEndOfLine":   (*View).SelectToEndOfLine,
-	"InsertNewline":       (*View).InsertNewline,
-	"InsertSpace":         (*View).InsertSpace,
-	"Backspace":           (*View).Backspace,
-	"Delete":              (*View).Delete,
-	"InsertTab":           (*View).InsertTab,
-	"Save":                (*View).Save,
-	"SaveAll":             (*View).SaveAll,
-	"SaveAs":              (*View).SaveAs,
-	"Find":                (*View).Find,
-	"FindNext":            (*View).FindNext,
-	"FindPrevious":        (*View).FindPrevious,
-	"Center":              (*View).Center,
-	"Undo":                (*View).Undo,
-	"Redo":                (*View).Redo,
-	"Copy":                (*View).Copy,
-	"Cut":                 (*View).Cut,
-	"CutLine":             (*View).CutLine,
-	"DuplicateLine":       (*View).DuplicateLine,
-	"DeleteLine":          (*View).DeleteLine,
-	"MoveLinesUp":         (*View).MoveLinesUp,
-	"MoveLinesDown":       (*View).MoveLinesDown,
-	"IndentSelection":     (*View).IndentSelection,
-	"OutdentSelection":    (*View).OutdentSelection,
-	"OutdentLine":         (*View).OutdentLine,
-	"Paste":               (*View).Paste,
-	"PastePrimary":        (*View).PastePrimary,
-	"SelectAll":           (*View).SelectAll,
-	"OpenFile":            (*View).OpenFile,
-	"Start":               (*View).Start,
-	"End":                 (*View).End,
-	"PageUp":              (*View).PageUp,
-	"PageDown":            (*View).PageDown,
-	"HalfPageUp":          (*View).HalfPageUp,
-	"HalfPageDown":        (*View).HalfPageDown,
-	"StartOfLine":         (*View).StartOfLine,
-	"EndOfLine":           (*View).EndOfLine,
-	"ToggleHelp":          (*View).ToggleHelp,
-	"ToggleRuler":         (*View).ToggleRuler,
-	"JumpLine":            (*View).JumpLine,
-	"ClearStatus":         (*View).ClearStatus,
-	"ShellMode":           (*View).ShellMode,
-	"CommandMode":         (*View).CommandMode,
-	"Escape":              (*View).Escape,
-	"Quit":                (*View).Quit,
-	"QuitAll":             (*View).QuitAll,
-	"AddTab":              (*View).AddTab,
-	"PreviousTab":         (*View).PreviousTab,
-	"NextTab":             (*View).NextTab,
-	"NextSplit":           (*View).NextSplit,
-	"PreviousSplit":       (*View).PreviousSplit,
-	"Unsplit":             (*View).Unsplit,
-	"VSplit":              (*View).VSplitBinding,
-	"HSplit":              (*View).HSplitBinding,
-	"ToggleMacro":         (*View).ToggleMacro,
-	"PlayMacro":           (*View).PlayMacro,
-	"Suspend":             (*View).Suspend,
+	"CursorUp":               (*View).CursorUp,
+	"CursorDown":             (*View).CursorDown,
+	"CursorPageUp":           (*View).CursorPageUp,
+	"CursorPageDown":         (*View).CursorPageDown,
+	"CursorLeft":             (*View).CursorLeft,
+	"CursorRight":            (*View).CursorRight,
+	"CursorStart":            (*View).CursorStart,
+	"CursorEnd":              (*View).CursorEnd,
+	"SelectToStart":          (*View).SelectToStart,
+	"SelectToEnd":            (*View).SelectToEnd,
+	"SelectUp":               (*View).SelectUp,
+	"SelectDown":             (*View).SelectDown,
+	"SelectLeft":             (*View).SelectLeft,
+	"SelectRight":            (*View).SelectRight,
+	"WordRight":              (*View).WordRight,
+	"WordLeft":               (*View).WordLeft,
+	"SelectWordRight":        (*View).SelectWordRight,
+	"SelectWordLeft":         (*View).SelectWordLeft,
+	"DeleteWordRight":        (*View).DeleteWordRight,
+	"DeleteWordLeft":         (*View).DeleteWordLeft,
+	"SelectLine":             (*View).SelectLine,
+	"SelectToStartOfLine":    (*View).SelectToStartOfLine,
+	"SelectToEndOfLine":      (*View).SelectToEndOfLine,
+	"ParagraphPrevious":      (*View).ParagraphPrevious,
+	"ParagraphNext":          (*View).ParagraphNext,
+	"InsertNewline":          (*View).InsertNewline,
+	"InsertSpace":            (*View).InsertSpace,
+	"Backspace":              (*View).Backspace,
+	"Delete":                 (*View).Delete,
+	"InsertTab":              (*View).InsertTab,
+	"Save":                   (*View).Save,
+	"SaveAll":                (*View).SaveAll,
+	"SaveAs":                 (*View).SaveAs,
+	"Find":                   (*View).Find,
+	"FindNext":               (*View).FindNext,
+	"FindPrevious":           (*View).FindPrevious,
+	"Center":                 (*View).Center,
+	"Undo":                   (*View).Undo,
+	"Redo":                   (*View).Redo,
+	"Copy":                   (*View).Copy,
+	"Cut":                    (*View).Cut,
+	"CutLine":                (*View).CutLine,
+	"DuplicateLine":          (*View).DuplicateLine,
+	"DeleteLine":             (*View).DeleteLine,
+	"MoveLinesUp":            (*View).MoveLinesUp,
+	"MoveLinesDown":          (*View).MoveLinesDown,
+	"IndentSelection":        (*View).IndentSelection,
+	"OutdentSelection":       (*View).OutdentSelection,
+	"OutdentLine":            (*View).OutdentLine,
+	"Paste":                  (*View).Paste,
+	"PastePrimary":           (*View).PastePrimary,
+	"SelectAll":              (*View).SelectAll,
+	"OpenFile":               (*View).OpenFile,
+	"Start":                  (*View).Start,
+	"End":                    (*View).End,
+	"PageUp":                 (*View).PageUp,
+	"PageDown":               (*View).PageDown,
+	"HalfPageUp":             (*View).HalfPageUp,
+	"HalfPageDown":           (*View).HalfPageDown,
+	"StartOfLine":            (*View).StartOfLine,
+	"EndOfLine":              (*View).EndOfLine,
+	"ToggleHelp":             (*View).ToggleHelp,
+	"ToggleKeyMenu":          (*View).ToggleKeyMenu,
+	"ToggleRuler":            (*View).ToggleRuler,
+	"JumpLine":               (*View).JumpLine,
+	"ClearStatus":            (*View).ClearStatus,
+	"ShellMode":              (*View).ShellMode,
+	"CommandMode":            (*View).CommandMode,
+	"ToggleOverwriteMode":    (*View).ToggleOverwriteMode,
+	"Escape":                 (*View).Escape,
+	"Quit":                   (*View).Quit,
+	"QuitAll":                (*View).QuitAll,
+	"AddTab":                 (*View).AddTab,
+	"PreviousTab":            (*View).PreviousTab,
+	"NextTab":                (*View).NextTab,
+	"NextSplit":              (*View).NextSplit,
+	"PreviousSplit":          (*View).PreviousSplit,
+	"Unsplit":                (*View).Unsplit,
+	"VSplit":                 (*View).VSplitBinding,
+	"HSplit":                 (*View).HSplitBinding,
+	"ToggleMacro":            (*View).ToggleMacro,
+	"PlayMacro":              (*View).PlayMacro,
+	"Suspend":                (*View).Suspend,
+	"ScrollUp":               (*View).ScrollUpAction,
+	"ScrollDown":             (*View).ScrollDownAction,
+	"SpawnMultiCursor":       (*View).SpawnMultiCursor,
+	"SpawnMultiCursorSelect": (*View).SpawnMultiCursorSelect,
+	"RemoveMultiCursor":      (*View).RemoveMultiCursor,
+	"RemoveAllMultiCursors":  (*View).RemoveAllMultiCursors,
+	"SkipMultiCursor":        (*View).SkipMultiCursor,
+	"JumpToMatchingBrace":    (*View).JumpToMatchingBrace,
 
 	// This was changed to InsertNewline but I don't want to break backwards compatibility
 	"InsertEnter": (*View).InsertNewline,
 }
 
+var bindingMouse = map[string]tcell.ButtonMask{
+	"MouseLeft":       tcell.Button1,
+	"MouseMiddle":     tcell.Button2,
+	"MouseRight":      tcell.Button3,
+	"MouseWheelUp":    tcell.WheelUp,
+	"MouseWheelDown":  tcell.WheelDown,
+	"MouseWheelLeft":  tcell.WheelLeft,
+	"MouseWheelRight": tcell.WheelRight,
+}
+
 var bindingKeys = map[string]tcell.Key{
 	"Up":             tcell.KeyUp,
 	"Down":           tcell.KeyDown,
@@ -215,6 +248,8 @@ var bindingKeys = map[string]tcell.Key{
 	"CtrlRightSq":    tcell.KeyCtrlRightSq,
 	"CtrlCarat":      tcell.KeyCtrlCarat,
 	"CtrlUnderscore": tcell.KeyCtrlUnderscore,
+	"CtrlPageUp":     tcell.KeyCtrlPgUp,
+	"CtrlPageDown":   tcell.KeyCtrlPgDn,
 	"Tab":            tcell.KeyTab,
 	"Esc":            tcell.KeyEsc,
 	"Escape":         tcell.KeyEscape,
@@ -230,12 +265,16 @@ var bindingKeys = map[string]tcell.Key{
 type Key struct {
 	keyCode   tcell.Key
 	modifiers tcell.ModMask
+	buttons   tcell.ButtonMask
 	r         rune
+	escape    string
 }
 
 // InitBindings initializes the keybindings for micro
 func InitBindings() {
 	bindings = make(map[Key][]func(*View, bool) bool)
+	bindingsStr = make(map[string]string)
+	mouseBindings = make(map[Key][]func(*View, bool, *tcell.EventMouse) bool)
 
 	var parsed map[string]string
 	defaults := DefaultBindings()
@@ -286,21 +325,35 @@ modSearch:
 		case strings.HasPrefix(k, "Shift"):
 			k = k[5:]
 			modifiers |= tcell.ModShift
+		case strings.HasPrefix(k, "\x1b"):
+			return Key{
+				keyCode:   -1,
+				modifiers: modifiers,
+				buttons:   -1,
+				r:         0,
+				escape:    k,
+			}, true
 		default:
 			break modSearch
 		}
 	}
 
+	if len(k) == 0 {
+		return Key{buttons: -1}, false
+	}
+
 	// Control is handled specially, since some character codes in bindingKeys
 	// are different when Control is depressed. We should check for Control keys
 	// first.
 	if modifiers&tcell.ModCtrl != 0 {
 		// see if the key is in bindingKeys with the Ctrl prefix.
+		k = string(unicode.ToUpper(rune(k[0]))) + k[1:]
 		if code, ok := bindingKeys["Ctrl"+k]; ok {
 			// It is, we're done.
 			return Key{
 				keyCode:   code,
 				modifiers: modifiers,
+				buttons:   -1,
 				r:         0,
 			}, true
 		}
@@ -311,6 +364,16 @@ modSearch:
 		return Key{
 			keyCode:   code,
 			modifiers: modifiers,
+			buttons:   -1,
+			r:         0,
+		}, true
+	}
+
+	// See if we can find the key in bindingMouse
+	if code, ok := bindingMouse[k]; ok {
+		return Key{
+			modifiers: modifiers,
+			buttons:   code,
 			r:         0,
 		}, true
 	}
@@ -320,12 +383,13 @@ modSearch:
 		return Key{
 			keyCode:   tcell.KeyRune,
 			modifiers: modifiers,
+			buttons:   -1,
 			r:         rune(k[0]),
 		}, true
 	}
 
 	// We don't know what happened.
-	return Key{}, false
+	return Key{buttons: -1}, false
 }
 
 // findAction will find 'action' using string 'v'
@@ -339,6 +403,53 @@ func findAction(v string) (action func(*View, bool) bool) {
 	return action
 }
 
+func findMouseAction(v string) func(*View, bool, *tcell.EventMouse) bool {
+	action, ok := mouseBindingActions[v]
+	if !ok {
+		// If the user seems to be binding a function that doesn't exist
+		// We hope that it's a lua function that exists and bind it to that
+		action = LuaFunctionMouseBinding(v)
+	}
+	return action
+}
+
+// TryBindKey tries to bind a key by writing to configDir/bindings.json
+// This function is unused for now
+func TryBindKey(k, v string) {
+	filename := configDir + "/bindings.json"
+	if _, e := os.Stat(filename); e == nil {
+		input, err := ioutil.ReadFile(filename)
+		if err != nil {
+			TermMessage("Error reading bindings.json file: " + err.Error())
+			return
+		}
+
+		conflict := -1
+		lines := strings.Split(string(input), "\n")
+		for i, l := range lines {
+			parts := strings.Split(l, ":")
+			if len(parts) >= 2 {
+				if strings.Contains(parts[0], k) {
+					conflict = i
+					TermMessage("Warning: Keybinding conflict:", k, " has been overwritten")
+				}
+			}
+		}
+
+		binding := fmt.Sprintf("    \"%s\": \"%s\",", k, v)
+		if conflict == -1 {
+			lines = append([]string{lines[0], binding}, lines[conflict:]...)
+		} else {
+			lines = append(append(lines[:conflict], binding), lines[conflict+1:]...)
+		}
+		txt := strings.Join(lines, "\n")
+		err = ioutil.WriteFile(filename, []byte(txt), 0644)
+		if err != nil {
+			TermMessage("Error")
+		}
+	}
+}
+
 // BindKey takes a key and an action and binds the two together
 func BindKey(k, v string) {
 	key, ok := findKey(k)
@@ -349,25 +460,52 @@ func BindKey(k, v string) {
 	if v == "ToggleHelp" {
 		helpBinding = k
 	}
+	if v == "ToggleKeyMenu" {
+		kmenuBinding = k
+	}
 	if helpBinding == k && v != "ToggleHelp" {
 		helpBinding = ""
 	}
+	if kmenuBinding == k && v != "ToggleKeyMenu" {
+		kmenuBinding = ""
+	}
 
 	actionNames := strings.Split(v, ",")
 	if actionNames[0] == "UnbindKey" {
 		delete(bindings, key)
+		delete(mouseBindings, key)
+		delete(bindingsStr, k)
 		if len(actionNames) == 1 {
-			actionNames = make([]string, 0, 0)
-		} else {
-			actionNames = append(actionNames[:0], actionNames[1:]...)
+			return
 		}
+		actionNames = append(actionNames[:0], actionNames[1:]...)
 	}
 	actions := make([]func(*View, bool) bool, 0, len(actionNames))
+	mouseActions := make([]func(*View, bool, *tcell.EventMouse) bool, 0, len(actionNames))
 	for _, actionName := range actionNames {
-		actions = append(actions, findAction(actionName))
+		if strings.HasPrefix(actionName, "Mouse") {
+			mouseActions = append(mouseActions, findMouseAction(actionName))
+		} else if strings.HasPrefix(actionName, "command:") {
+			cmd := strings.SplitN(actionName, ":", 2)[1]
+			actions = append(actions, CommandAction(cmd))
+		} else if strings.HasPrefix(actionName, "command-edit:") {
+			cmd := strings.SplitN(actionName, ":", 2)[1]
+			actions = append(actions, CommandEditAction(cmd))
+		} else {
+			actions = append(actions, findAction(actionName))
+		}
 	}
 
-	bindings[key] = actions
+	if len(actions) > 0 {
+		// Can't have a binding be both mouse and normal
+		delete(mouseBindings, key)
+		bindings[key] = actions
+		bindingsStr[k] = v
+	} else if len(mouseActions) > 0 {
+		// Can't have a binding be both mouse and normal
+		delete(bindings, key)
+		mouseBindings[key] = mouseActions
+	}
 }
 
 // DefaultBindings returns a map containing micro's default keybindings
@@ -397,6 +535,8 @@ func DefaultBindings() map[string]string {
 		"CtrlDown":       "CursorEnd",
 		"CtrlShiftUp":    "SelectToStart",
 		"CtrlShiftDown":  "SelectToEnd",
+		"Alt-{":          "ParagraphPrevious",
+		"Alt-}":          "ParagraphNext",
 		"Enter":          "InsertNewline",
 		"CtrlH":          "Backspace",
 		"Backspace":      "Backspace",
@@ -426,7 +566,10 @@ func DefaultBindings() map[string]string {
 		"CtrlEnd":        "CursorEnd",
 		"PageUp":         "CursorPageUp",
 		"PageDown":       "CursorPageDown",
+		"CtrlPageUp":     "PreviousTab",
+		"CtrlPageDown":   "NextTab",
 		"CtrlG":          "ToggleHelp",
+		"Alt-g":          "ToggleKeyMenu",
 		"CtrlR":          "ToggleRuler",
 		"CtrlL":          "JumpLine",
 		"Delete":         "Delete",
@@ -436,22 +579,35 @@ func DefaultBindings() map[string]string {
 		"CtrlW":          "NextSplit",
 		"CtrlU":          "ToggleMacro",
 		"CtrlJ":          "PlayMacro",
+		"Insert":         "ToggleOverwriteMode",
 
 		// Emacs-style keybindings
 		"Alt-f": "WordRight",
 		"Alt-b": "WordLeft",
 		"Alt-a": "StartOfLine",
 		"Alt-e": "EndOfLine",
-		"Alt-p": "CursorUp",
-		"Alt-n": "CursorDown",
+		// "Alt-p": "CursorUp",
+		// "Alt-n": "CursorDown",
 
 		// Integration with file managers
-		"F1":  "ToggleHelp",
 		"F2":  "Save",
 		"F3":  "Find",
 		"F4":  "Quit",
 		"F7":  "Find",
 		"F10": "Quit",
 		"Esc": "Escape",
+
+		// Mouse bindings
+		"MouseWheelUp":   "ScrollUp",
+		"MouseWheelDown": "ScrollDown",
+		"MouseLeft":      "MousePress",
+		"MouseMiddle":    "PastePrimary",
+		"Ctrl-MouseLeft": "MouseMultiCursor",
+
+		"Alt-n": "SpawnMultiCursor",
+		"Alt-m": "SpawnMultiCursorSelect",
+		"Alt-p": "RemoveMultiCursor",
+		"Alt-c": "RemoveAllMultiCursors",
+		"Alt-x": "SkipMultiCursor",
 	}
 }

cmd/micro/buffer.go

@@ -2,7 +2,9 @@ package main
 
 import (
 	"bytes"
+	"crypto/md5"
 	"encoding/gob"
+	"errors"
 	"io"
 	"io/ioutil"
 	"os"
@@ -15,10 +17,16 @@ import (
 	"time"
 	"unicode/utf8"
 
-	"github.com/mitchellh/go-homedir"
 	"github.com/zyedidia/micro/cmd/micro/highlight"
 )
 
+var (
+	// 0 - no line type detected
+	// 1 - lf detected
+	// 2 - crlf detected
+	fileformat = 0
+)
+
 // Buffer stores the text for files that are loaded into the text editor
 // It uses a rope to efficiently store the string and contains some
 // simple functions for saving and wrapper functions for modifying the rope
@@ -28,7 +36,9 @@ type Buffer struct {
 	// This stores all the text in the buffer as an array of lines
 	*LineArray
 
-	Cursor Cursor
+	Cursor    Cursor
+	cursors   []*Cursor // for multiple cursors
+	curCursor int       // the current cursor
 
 	// Path to the file on disk
 	Path string
@@ -43,11 +53,15 @@ type Buffer struct {
 	// Stores the last modification time of the file the buffer is pointing to
 	ModTime time.Time
 
+	// NumLines is the number of lines in the buffer
 	NumLines int
 
 	syntaxDef   *highlight.Def
 	highlighter *highlight.Highlighter
 
+	// Hash of the original buffer -- empty if fastdirty is on
+	origHash [16]byte
+
 	// Buffer local settings
 	Settings map[string]interface{}
 }
@@ -60,15 +74,64 @@ type SerializedBuffer struct {
 	ModTime      time.Time
 }
 
+// NewBufferFromFile opens a new buffer using the given filepath
+// It will also automatically handle `~`, and line/column with filename:l:c
+// It will return an empty buffer if the filepath does not exist
+// and an error if the file is a directory
+func NewBufferFromFile(path string) (*Buffer, error) {
+	filename := GetPath(path)
+	filename = ReplaceHome(filename)
+	file, err := os.Open(filename)
+	fileInfo, _ := os.Stat(filename)
+
+	if err == nil && fileInfo.IsDir() {
+		return nil, errors.New(filename + " is a directory")
+	}
+
+	defer file.Close()
+
+	var buf *Buffer
+	if err != nil {
+		// File does not exist -- create an empty buffer with that name
+		buf = NewBufferFromString("", path)
+	} else {
+		buf = NewBuffer(file, FSize(file), path)
+	}
+
+	return buf, nil
+}
+
+// NewBufferFromString creates a new buffer containing the given
+// string
 func NewBufferFromString(text, path string) *Buffer {
 	return NewBuffer(strings.NewReader(text), int64(len(text)), path)
 }
 
 // NewBuffer creates a new buffer from a given reader with a given path
 func NewBuffer(reader io.Reader, size int64, path string) *Buffer {
+	startpos := Loc{0, 0}
+	startposErr := true
+	if strings.Contains(path, ":") {
+		var err error
+		split := strings.Split(path, ":")
+		path = split[0]
+		startpos.Y, err = strconv.Atoi(split[1])
+		if err != nil {
+			messenger.Error("Error opening file: ", err)
+		} else {
+			startposErr = false
+			if len(split) > 2 {
+				startpos.X, err = strconv.Atoi(split[2])
+				if err != nil {
+					messenger.Error("Error opening file: ", err)
+				}
+			}
+		}
+	}
+
 	if path != "" {
 		for _, tab := range tabs {
-			for _, view := range tab.views {
+			for _, view := range tab.Views {
 				if view.Buf.Path == path {
 					return view.Buf
 				}
@@ -86,6 +149,12 @@ func NewBuffer(reader io.Reader, size int64, path string) *Buffer {
 		}
 	}
 
+	if fileformat == 1 {
+		b.Settings["fileformat"] = "unix"
+	} else if fileformat == 2 {
+		b.Settings["fileformat"] = "dos"
+	}
+
 	absPath, _ := filepath.Abs(path)
 
 	b.Path = path
@@ -107,11 +176,18 @@ func NewBuffer(reader io.Reader, size int64, path string) *Buffer {
 	cursorStartX := 0
 	cursorStartY := 0
 	// If -startpos LINE,COL was passed, use start position LINE,COL
-	if len(*flagStartPos) > 0 {
+	if len(*flagStartPos) > 0 || !startposErr {
 		positions := strings.Split(*flagStartPos, ",")
-		if len(positions) == 2 {
-			lineNum, errPos1 := strconv.Atoi(positions[0])
-			colNum, errPos2 := strconv.Atoi(positions[1])
+		if len(positions) == 2 || !startposErr {
+			var lineNum, colNum int
+			var errPos1, errPos2 error
+			if !startposErr {
+				lineNum = startpos.Y
+				colNum = startpos.X
+			} else {
+				lineNum, errPos1 = strconv.Atoi(positions[0])
+				colNum, errPos2 = strconv.Atoi(positions[1])
+			}
 			if errPos1 == nil && errPos2 == nil {
 				cursorStartX = colNum
 				cursorStartY = lineNum - 1
@@ -140,10 +216,11 @@ func NewBuffer(reader io.Reader, size int64, path string) *Buffer {
 
 	InitLocalSettings(b)
 
-	if b.Settings["savecursor"].(bool) || b.Settings["saveundo"].(bool) {
+	if startposErr && len(*flagStartPos) == 0 && (b.Settings["savecursor"].(bool) || b.Settings["saveundo"].(bool)) {
 		// If either savecursor or saveundo is turned on, we need to load the serialized information
 		// from ~/.config/micro/buffers
 		file, err := os.Open(configDir + "/buffers/" + EscapePath(b.AbsPath))
+		defer file.Close()
 		if err == nil {
 			var buffer SerializedBuffer
 			decoder := gob.NewDecoder(file)
@@ -159,19 +236,31 @@ func NewBuffer(reader io.Reader, size int64, path string) *Buffer {
 			}
 
 			if b.Settings["saveundo"].(bool) {
-				// We should only use last time's eventhandler if the file wasn't by someone else in the meantime
+				// We should only use last time's eventhandler if the file wasn't modified by someone else in the meantime
 				if b.ModTime == buffer.ModTime {
 					b.EventHandler = buffer.EventHandler
 					b.EventHandler.buf = b
 				}
 			}
 		}
-		file.Close()
 	}
 
+	if !b.Settings["fastdirty"].(bool) {
+		if size > 50000 {
+			// If the file is larger than a megabyte fastdirty needs to be on
+			b.Settings["fastdirty"] = true
+		} else {
+			b.origHash = md5.Sum([]byte(b.String()))
+		}
+	}
+
+	b.cursors = []*Cursor{&b.Cursor}
+
 	return b
 }
 
+// GetName returns the name that should be displayed in the statusline
+// for this buffer
 func (b *Buffer) GetName() string {
 	if b.name == "" {
 		if b.Path == "" {
@@ -204,7 +293,7 @@ func (b *Buffer) UpdateRules() {
 			}
 
 			ft := b.Settings["filetype"].(string)
-			if ft == "Unknown" || ft == "" {
+			if (ft == "Unknown" || ft == "") && !rehighlight {
 				if highlight.MatchFiletype(ftdetect, b.Path, b.lines[0].data) {
 					header := new(highlight.Header)
 					header.FileType = file.FileType
@@ -217,7 +306,7 @@ func (b *Buffer) UpdateRules() {
 					rehighlight = true
 				}
 			} else {
-				if file.FileType == ft {
+				if file.FileType == ft && !rehighlight {
 					header := new(highlight.Header)
 					header.FileType = file.FileType
 					header.FtDetect = ftdetect
@@ -236,7 +325,6 @@ func (b *Buffer) UpdateRules() {
 	if b.syntaxDef != nil {
 		highlight.ResolveIncludes(b.syntaxDef, files)
 	}
-	files = nil
 
 	if b.highlighter == nil || rehighlight {
 		if b.syntaxDef != nil {
@@ -305,6 +393,41 @@ func (b *Buffer) Update() {
 	b.NumLines = len(b.lines)
 }
 
+// MergeCursors merges any cursors that are at the same position
+// into one cursor
+func (b *Buffer) MergeCursors() {
+	var cursors []*Cursor
+	for i := 0; i < len(b.cursors); i++ {
+		c1 := b.cursors[i]
+		if c1 != nil {
+			for j := 0; j < len(b.cursors); j++ {
+				c2 := b.cursors[j]
+				if c2 != nil && i != j && c1.Loc == c2.Loc {
+					b.cursors[j] = nil
+				}
+			}
+			cursors = append(cursors, c1)
+		}
+	}
+
+	b.cursors = cursors
+
+	for i := range b.cursors {
+		b.cursors[i].Num = i
+	}
+
+	if b.curCursor >= len(b.cursors) {
+		b.curCursor = len(b.cursors) - 1
+	}
+}
+
+// UpdateCursors updates all the cursors indicies
+func (b *Buffer) UpdateCursors() {
+	for i, c := range b.cursors {
+		c.Num = i
+	}
+}
+
 // Save saves the buffer to its default path
 func (b *Buffer) Save() error {
 	return b.SaveAs(b.Path)
@@ -328,7 +451,7 @@ func (b *Buffer) Serialize() error {
 				b.ModTime,
 			})
 		}
-		file.Close()
+		err = file.Close()
 		return err
 	}
 	return nil
@@ -337,7 +460,6 @@ func (b *Buffer) Serialize() error {
 // SaveAs saves the buffer to a specified path (filename), creating the file if it does not exist
 func (b *Buffer) SaveAs(filename string) error {
 	b.UpdateRules()
-	dir, _ := homedir.Dir()
 	if b.Settings["rmtrailingws"].(bool) {
 		r, _ := regexp.Compile(`[ \t]+$`)
 		for lineNum, line := range b.Lines(0, b.NumLines) {
@@ -356,17 +478,74 @@ func (b *Buffer) SaveAs(filename string) error {
 			b.Insert(end, "\n")
 		}
 	}
-	str := b.String()
-	data := []byte(str)
-	err := ioutil.WriteFile(filename, data, 0644)
-	if err == nil {
-		b.Path = strings.Replace(filename, "~", dir, 1)
-		b.IsModified = false
+
+	defer func() {
 		b.ModTime, _ = GetModTime(filename)
-		return b.Serialize()
+	}()
+
+	// Removes any tilde and replaces with the absolute path to home
+	var absFilename string = ReplaceHome(filename)
+
+	// Get the leading path to the file | "." is returned if there's no leading path provided
+	if dirname := filepath.Dir(absFilename); dirname != "." {
+		// Check if the parent dirs don't exist
+		if _, statErr := os.Stat(dirname); os.IsNotExist(statErr) {
+			// Prompt to make sure they want to create the dirs that are missing
+			if yes, canceled := messenger.YesNoPrompt("Parent folders \"" + dirname + "\" do not exist. Create them? (y,n)"); yes && !canceled {
+				// Create all leading dir(s) since they don't exist
+				if mkdirallErr := os.MkdirAll(dirname, os.ModePerm); mkdirallErr != nil {
+					// If there was an error creating the dirs
+					return mkdirallErr
+				}
+			} else {
+				// If they canceled the creation of leading dirs
+				return errors.New("Save aborted")
+			}
+		}
 	}
-	b.ModTime, _ = GetModTime(filename)
-	return err
+
+	f, err := os.OpenFile(absFilename, os.O_WRONLY|os.O_CREATE, 0644)
+	defer f.Close()
+	if err != nil {
+		return err
+	}
+	if err := f.Truncate(0); err != nil {
+		return err
+	}
+	useCrlf := b.Settings["fileformat"] == "dos"
+	size := 0
+	for i, l := range b.lines {
+		size += len(l.data)
+		if _, err := f.Write(l.data); err != nil {
+			return err
+		}
+		if i != len(b.lines)-1 {
+			if useCrlf {
+				size += 2
+				if _, err := f.Write([]byte{'\r', '\n'}); err != nil {
+					return err
+				}
+			} else {
+				size++
+				if _, err := f.Write([]byte{'\n'}); err != nil {
+					return err
+				}
+			}
+		}
+	}
+
+	if !b.Settings["fastdirty"].(bool) {
+		if size > 50000 {
+			// If the file is larger than a megabyte fastdirty needs to be on
+			b.Settings["fastdirty"] = true
+		} else {
+			b.origHash = md5.Sum([]byte(b.String()))
+		}
+	}
+
+	b.Path = filename
+	b.IsModified = false
+	return b.Serialize()
 }
 
 // SaveAsWithSudo is the same as SaveAs except it uses a neat trick
@@ -375,21 +554,13 @@ func (b *Buffer) SaveAsWithSudo(filename string) error {
 	b.UpdateRules()
 	b.Path = filename
 
-	// The user may have already used sudo in which case we won't need the password
-	// It's a bit nicer for them if they don't have to enter the password every time
-	_, err := RunShellCommand("sudo -v")
-	needPassword := err != nil
-
-	// If we need the password, we have to close the screen and ask using the shell
-	if needPassword {
-		// Shut down the screen because we're going to interact directly with the shell
-		screen.Fini()
-		screen = nil
-	}
+	// Shut down the screen because we're going to interact directly with the shell
+	screen.Fini()
+	screen = nil
 
 	// Set up everything for the command
-	cmd := exec.Command("sudo", "tee", filename)
-	cmd.Stdin = bytes.NewBufferString(b.String())
+	cmd := exec.Command(globalSettings["sucmd"].(string), "tee", filename)
+	cmd.Stdin = bytes.NewBufferString(b.SaveString(b.Settings["fileformat"] == "dos"))
 
 	// This is a trap for Ctrl-C so that it doesn't kill micro
 	// Instead we trap Ctrl-C to kill the program we're running
@@ -403,13 +574,10 @@ func (b *Buffer) SaveAsWithSudo(filename string) error {
 
 	// Start the command
 	cmd.Start()
-	err = cmd.Wait()
+	err := cmd.Wait()
 
-	// If we needed the password, we closed the screen, so we have to initialize it again
-	if needPassword {
-		// Start the screen back up
-		InitScreen()
-	}
+	// Start the screen back up
+	InitScreen()
 	if err == nil {
 		b.IsModified = false
 		b.ModTime, _ = GetModTime(filename)
@@ -418,6 +586,15 @@ func (b *Buffer) SaveAsWithSudo(filename string) error {
 	return err
 }
 
+// Modified returns if this buffer has been modified since
+// being opened
+func (b *Buffer) Modified() bool {
+	if b.Settings["fastdirty"].(bool) {
+		return b.IsModified
+	}
+	return b.origHash != md5.Sum([]byte(b.String()))
+}
+
 func (b *Buffer) insert(pos Loc, value []byte) {
 	b.IsModified = true
 	b.LineArray.insert(pos, value)
@@ -447,13 +624,29 @@ func (b *Buffer) End() Loc {
 
 // RuneAt returns the rune at a given location in the buffer
 func (b *Buffer) RuneAt(loc Loc) rune {
-	line := []rune(b.Line(loc.Y))
+	line := b.LineRunes(loc.Y)
 	if len(line) > 0 {
 		return line[loc.X]
 	}
 	return '\n'
 }
 
+// Line returns a single line as an array of runes
+func (b *Buffer) LineBytes(n int) []byte {
+	if n >= len(b.lines) {
+		return []byte{}
+	}
+	return b.lines[n].data
+}
+
+// Line returns a single line as an array of runes
+func (b *Buffer) LineRunes(n int) []rune {
+	if n >= len(b.lines) {
+		return []rune{}
+	}
+	return toRunes(b.lines[n].data)
+}
+
 // Line returns a single line
 func (b *Buffer) Line(n int) string {
 	if n >= len(b.lines) {
@@ -462,6 +655,7 @@ func (b *Buffer) Line(n int) string {
 	return string(b.lines[n].data)
 }
 
+// LinesNum returns the number of lines in the buffer
 func (b *Buffer) LinesNum() int {
 	return len(b.lines)
 }
@@ -533,3 +727,67 @@ func (b *Buffer) ClearMatches() {
 		b.SetState(i, nil)
 	}
 }
+
+func (b *Buffer) clearCursors() {
+	for i := 1; i < len(b.cursors); i++ {
+		b.cursors[i] = nil
+	}
+	b.cursors = b.cursors[:1]
+	b.UpdateCursors()
+	b.Cursor.ResetSelection()
+}
+
+var bracePairs = [][2]rune{
+	{'(', ')'},
+	{'{', '}'},
+	{'[', ']'},
+}
+
+// FindMatchingBrace returns the location in the buffer of the matching bracket
+// It is given a brace type containing the open and closing character, (for example
+// '{' and '}') as well as the location to match from
+func (b *Buffer) FindMatchingBrace(braceType [2]rune, start Loc) Loc {
+	curLine := b.LineRunes(start.Y)
+	startChar := curLine[start.X]
+	var i int
+	if startChar == braceType[0] {
+		for y := start.Y; y < b.NumLines; y++ {
+			l := b.LineRunes(y)
+			xInit := 0
+			if y == start.Y {
+				xInit = start.X
+			}
+			for x := xInit; x < len(l); x++ {
+				r := l[x]
+				if r == braceType[0] {
+					i++
+				} else if r == braceType[1] {
+					i--
+					if i == 0 {
+						return Loc{x, y}
+					}
+				}
+			}
+		}
+	} else if startChar == braceType[1] {
+		for y := start.Y; y >= 0; y-- {
+			l := []rune(string(b.lines[y].data))
+			xInit := len(l) - 1
+			if y == start.Y {
+				xInit = start.X
+			}
+			for x := xInit; x >= 0; x-- {
+				r := l[x]
+				if r == braceType[0] {
+					i--
+					if i == 0 {
+						return Loc{x, y}
+					}
+				} else if r == braceType[1] {
+					i++
+				}
+			}
+		}
+	}
+	return start
+}

cmd/micro/cellview.go

@@ -65,12 +65,36 @@ type CellView struct {
 }
 
 func (c *CellView) Draw(buf *Buffer, top, height, left, width int) {
+	if width <= 0 {
+		return
+	}
+
+	matchingBrace := Loc{-1, -1}
+	// bracePairs is defined in buffer.go
+	if buf.Settings["matchbrace"].(bool) {
+		for _, bp := range bracePairs {
+			curX := buf.Cursor.X
+			curLoc := buf.Cursor.Loc
+			if buf.Settings["matchbraceleft"].(bool) {
+				curX--
+				if curX > 0 {
+					curLoc = curLoc.Move(-1, buf)
+				}
+			}
+
+			r := buf.Cursor.RuneUnder(curX)
+			if r == bp[0] || r == bp[1] {
+				matchingBrace = buf.FindMatchingBrace(bp, curLoc)
+			}
+		}
+	}
+
 	tabsize := int(buf.Settings["tabsize"].(float64))
 	softwrap := buf.Settings["softwrap"].(bool)
 	indentrunes := []rune(buf.Settings["indentchar"].(string))
 	// if empty indentchar settings, use space
 	if indentrunes == nil || len(indentrunes) == 0 {
-		indentrunes = []rune(" ")
+		indentrunes = []rune{' '}
 	}
 	indentchar := indentrunes[0]
 
@@ -133,7 +157,13 @@ func (c *CellView) Draw(buf *Buffer, top, height, left, width int) {
 			char := line[colN]
 
 			if viewCol >= 0 {
-				c.lines[viewLine][viewCol] = &Char{Loc{viewCol, viewLine}, Loc{colN, lineN}, char, char, curStyle, 1}
+				st := curStyle
+				if colN == matchingBrace.X && lineN == matchingBrace.Y && !buf.Cursor.HasSelection() {
+					st = curStyle.Reverse(true)
+				}
+				if viewCol < len(c.lines[viewLine]) {
+					c.lines[viewLine][viewCol] = &Char{Loc{viewCol, viewLine}, Loc{colN, lineN}, char, char, st, 1}
+				}
 			}
 			if char == '\t' {
 				charWidth := tabsize - (viewCol+left)%tabsize
@@ -142,7 +172,8 @@ func (c *CellView) Draw(buf *Buffer, top, height, left, width int) {
 					c.lines[viewLine][viewCol].width = charWidth
 
 					indentStyle := curStyle
-					if group, ok := colorscheme["indent-char"]; ok {
+					ch := buf.Settings["indentchar"].(string)
+					if group, ok := colorscheme["indent-char"]; ok && !IsStrWhitespace(ch) && ch != "" {
 						indentStyle = group
 					}
 
@@ -151,7 +182,7 @@ func (c *CellView) Draw(buf *Buffer, top, height, left, width int) {
 
 				for i := 1; i < charWidth; i++ {
 					viewCol++
-					if viewCol >= 0 && viewCol < lineLength {
+					if viewCol >= 0 && viewCol < lineLength && viewCol < len(c.lines[viewLine]) {
 						c.lines[viewLine][viewCol] = &Char{Loc{viewCol, viewLine}, Loc{colN, lineN}, char, ' ', curStyle, 1}
 					}
 				}
@@ -163,7 +194,7 @@ func (c *CellView) Draw(buf *Buffer, top, height, left, width int) {
 				}
 				for i := 1; i < charWidth; i++ {
 					viewCol++
-					if viewCol >= 0 && viewCol < lineLength {
+					if viewCol >= 0 && viewCol < lineLength && viewCol < len(c.lines[viewLine]) {
 						c.lines[viewLine][viewCol] = &Char{Loc{viewCol, viewLine}, Loc{colN, lineN}, char, ' ', curStyle, 1}
 					}
 				}

cmd/micro/colorscheme.go

@@ -15,7 +15,7 @@ type Colorscheme map[string]tcell.Style
 // The current colorscheme
 var colorscheme Colorscheme
 
-// This takes in a syntax group and returns the colorscheme's style for that group
+// GetColor takes in a syntax group and returns the colorscheme's style for that group
 func GetColor(color string) tcell.Style {
 	st := defStyle
 	if color == "" {
@@ -54,7 +54,7 @@ func InitColorscheme() {
 		Foreground(tcell.ColorDefault).
 		Background(tcell.ColorDefault)
 	if screen != nil {
-		screen.SetStyle(defStyle)
+		// screen.SetStyle(defStyle)
 	}
 
 	LoadDefaultColorscheme()
@@ -109,7 +109,7 @@ func ParseColorscheme(text string) Colorscheme {
 				defStyle = style
 			}
 			if screen != nil {
-				screen.SetStyle(defStyle)
+				// screen.SetStyle(defStyle)
 			}
 		} else {
 			fmt.Println("Color-link statement is not valid:", line)
@@ -252,5 +252,9 @@ func GetColor256(color int) tcell.Color {
 		tcell.Color253, tcell.Color254, tcell.Color255,
 	}
 
-	return colors[color]
+	if color >= 0 && color < len(colors) {
+		return colors[color]
+	}
+
+	return tcell.ColorDefault
 }

cmd/micro/command.go

@@ -1,20 +1,17 @@
 package main
 
 import (
-	"bytes"
 	"fmt"
-	"io"
 	"os"
-	"os/exec"
-	"os/signal"
 	"path/filepath"
 	"regexp"
 	"runtime"
 	"strconv"
 	"strings"
+	"unicode/utf8"
 
 	humanize "github.com/dustin/go-humanize"
-	"github.com/mitchellh/go-homedir"
+	"github.com/zyedidia/micro/cmd/micro/shellwords"
 )
 
 // A Command contains a action (a function to call) as well as information about how to autocomplete the command
@@ -35,27 +32,32 @@ var commandActions map[string]func([]string)
 
 func init() {
 	commandActions = map[string]func([]string){
-		"Set":       Set,
-		"SetLocal":  SetLocal,
-		"Show":      Show,
-		"Run":       Run,
-		"Bind":      Bind,
-		"Quit":      Quit,
-		"Save":      Save,
-		"Replace":   Replace,
-		"VSplit":    VSplit,
-		"HSplit":    HSplit,
-		"Tab":       NewTab,
-		"Help":      Help,
-		"Eval":      Eval,
-		"ToggleLog": ToggleLog,
-		"Plugin":    PluginCmd,
-		"Reload":    Reload,
-		"Cd":        Cd,
-		"Pwd":       Pwd,
-		"Open":      Open,
-		"TabSwitch": TabSwitch,
-		"MemUsage":  MemUsage,
+		"Set":        Set,
+		"SetLocal":   SetLocal,
+		"Show":       Show,
+		"ShowKey":    ShowKey,
+		"Run":        Run,
+		"Bind":       Bind,
+		"Quit":       Quit,
+		"Save":       Save,
+		"Replace":    Replace,
+		"ReplaceAll": ReplaceAll,
+		"VSplit":     VSplit,
+		"HSplit":     HSplit,
+		"Tab":        NewTab,
+		"Help":       Help,
+		"Eval":       Eval,
+		"ToggleLog":  ToggleLog,
+		"Plugin":     PluginCmd,
+		"Reload":     Reload,
+		"Cd":         Cd,
+		"Pwd":        Pwd,
+		"Open":       Open,
+		"TabSwitch":  TabSwitch,
+		"Term":       Term,
+		"MemUsage":   MemUsage,
+		"Retab":      Retab,
+		"Raw":        Raw,
 	}
 }
 
@@ -89,27 +91,54 @@ func MakeCommand(name, function string, completions ...Completion) {
 // DefaultCommands returns a map containing micro's default commands
 func DefaultCommands() map[string]StrCommand {
 	return map[string]StrCommand{
-		"set":       {"Set", []Completion{OptionCompletion, NoCompletion}},
-		"setlocal":  {"SetLocal", []Completion{OptionCompletion, NoCompletion}},
-		"show":      {"Show", []Completion{OptionCompletion, NoCompletion}},
-		"bind":      {"Bind", []Completion{NoCompletion}},
-		"run":       {"Run", []Completion{NoCompletion}},
-		"quit":      {"Quit", []Completion{NoCompletion}},
-		"save":      {"Save", []Completion{NoCompletion}},
-		"replace":   {"Replace", []Completion{NoCompletion}},
-		"vsplit":    {"VSplit", []Completion{FileCompletion, NoCompletion}},
-		"hsplit":    {"HSplit", []Completion{FileCompletion, NoCompletion}},
-		"tab":       {"Tab", []Completion{FileCompletion, NoCompletion}},
-		"help":      {"Help", []Completion{HelpCompletion, NoCompletion}},
-		"eval":      {"Eval", []Completion{NoCompletion}},
-		"log":       {"ToggleLog", []Completion{NoCompletion}},
-		"plugin":    {"Plugin", []Completion{PluginCmdCompletion, PluginNameCompletion}},
-		"reload":    {"Reload", []Completion{NoCompletion}},
-		"cd":        {"Cd", []Completion{FileCompletion}},
-		"pwd":       {"Pwd", []Completion{NoCompletion}},
-		"open":      {"Open", []Completion{FileCompletion}},
-		"tabswitch": {"TabSwitch", []Completion{NoCompletion}},
-		"memusage":  {"MemUsage", []Completion{NoCompletion}},
+		"set":        {"Set", []Completion{OptionCompletion, OptionValueCompletion}},
+		"setlocal":   {"SetLocal", []Completion{OptionCompletion, OptionValueCompletion}},
+		"show":       {"Show", []Completion{OptionCompletion, NoCompletion}},
+		"showkey":    {"ShowKey", []Completion{NoCompletion}},
+		"bind":       {"Bind", []Completion{NoCompletion}},
+		"run":        {"Run", []Completion{NoCompletion}},
+		"quit":       {"Quit", []Completion{NoCompletion}},
+		"save":       {"Save", []Completion{NoCompletion}},
+		"replace":    {"Replace", []Completion{NoCompletion}},
+		"replaceall": {"ReplaceAll", []Completion{NoCompletion}},
+		"vsplit":     {"VSplit", []Completion{FileCompletion, NoCompletion}},
+		"hsplit":     {"HSplit", []Completion{FileCompletion, NoCompletion}},
+		"tab":        {"Tab", []Completion{FileCompletion, NoCompletion}},
+		"help":       {"Help", []Completion{HelpCompletion, NoCompletion}},
+		"eval":       {"Eval", []Completion{NoCompletion}},
+		"log":        {"ToggleLog", []Completion{NoCompletion}},
+		"plugin":     {"Plugin", []Completion{PluginCmdCompletion, PluginNameCompletion}},
+		"reload":     {"Reload", []Completion{NoCompletion}},
+		"cd":         {"Cd", []Completion{FileCompletion}},
+		"pwd":        {"Pwd", []Completion{NoCompletion}},
+		"open":       {"Open", []Completion{FileCompletion}},
+		"tabswitch":  {"TabSwitch", []Completion{NoCompletion}},
+		"term":       {"Term", []Completion{NoCompletion}},
+		"memusage":   {"MemUsage", []Completion{NoCompletion}},
+		"retab":      {"Retab", []Completion{NoCompletion}},
+		"raw":        {"Raw", []Completion{NoCompletion}},
+	}
+}
+
+// CommandEditAction returns a bindable function that opens a prompt with
+// the given string and executes the command when the user presses
+// enter
+func CommandEditAction(prompt string) func(*View, bool) bool {
+	return func(v *View, usePlugin bool) bool {
+		input, canceled := messenger.Prompt("> ", prompt, "Command", CommandCompletion)
+		if !canceled {
+			HandleCommand(input)
+		}
+		return false
+	}
+}
+
+// CommandAction returns a bindable function which executes the
+// given command
+func CommandAction(cmd string) func(*View, bool) bool {
+	return func(v *View, usePlugin bool) bool {
+		HandleCommand(cmd)
+		return false
 	}
 }
 
@@ -148,7 +177,7 @@ func PluginCmd(args []string) {
 					continue
 				}
 			}
-			if !IsSpaces(removed) {
+			if !IsSpaces([]byte(removed)) {
 				messenger.Message("Removed ", removed)
 			} else {
 				messenger.Error("The requested plugins do not exist")
@@ -196,6 +225,34 @@ func PluginCmd(args []string) {
 	}
 }
 
+// Retab changes all spaces to tabs or all tabs to spaces
+// depending on the user's settings
+func Retab(args []string) {
+	CurView().Retab(true)
+}
+
+// Raw opens a new raw view which displays the escape sequences micro
+// is receiving in real-time
+func Raw(args []string) {
+	buf := NewBufferFromString("", "Raw events")
+
+	view := NewView(buf)
+	view.Buf.Insert(view.Cursor.Loc, "Warning: Showing raw event escape codes\n")
+	view.Buf.Insert(view.Cursor.Loc, "Use CtrlQ to exit\n")
+	view.Type = vtRaw
+	tab := NewTabFromView(view)
+	tab.SetNum(len(tabs))
+	tabs = append(tabs, tab)
+	curTab = len(tabs) - 1
+	if len(tabs) == 2 {
+		for _, t := range tabs {
+			for _, v := range t.Views {
+				v.ToggleTabbar()
+			}
+		}
+	}
+}
+
 // TabSwitch switches to a given tab either by name or by number
 func TabSwitch(args []string) {
 	if len(args) > 0 {
@@ -205,7 +262,7 @@ func TabSwitch(args []string) {
 
 			found := false
 			for _, t := range tabs {
-				v := t.views[t.CurView]
+				v := t.Views[t.CurView]
 				if v.Buf.GetName() == args[0] {
 					curTab = v.TabNum
 					found = true
@@ -228,12 +285,19 @@ func TabSwitch(args []string) {
 // Cd changes the current working directory
 func Cd(args []string) {
 	if len(args) > 0 {
-		home, _ := homedir.Dir()
-		path := strings.Replace(args[0], "~", home, 1)
-		os.Chdir(path)
+		path := ReplaceHome(args[0])
+		err := os.Chdir(path)
+		if err != nil {
+			messenger.Error("Error with cd: ", err)
+			return
+		}
+		wd, _ := os.Getwd()
 		for _, tab := range tabs {
-			for _, view := range tab.views {
-				wd, _ := os.Getwd()
+			for _, view := range tab.Views {
+				if len(view.Buf.name) == 0 {
+					continue
+				}
+
 				view.Buf.Path, _ = MakeRelative(view.Buf.AbsPath, wd)
 				if p, _ := filepath.Abs(view.Buf.Path); !strings.Contains(p, wd) {
 					view.Buf.Path = view.Buf.AbsPath
@@ -272,7 +336,12 @@ func Open(args []string) {
 	if len(args) > 0 {
 		filename := args[0]
 		// the filename might or might not be quoted, so unquote first then join the strings.
-		filename = strings.Join(SplitCommandArgs(filename), " ")
+		args, err := shellwords.Split(filename)
+		if err != nil {
+			messenger.Error("Error parsing args ", err)
+			return
+		}
+		filename = strings.Join(args, " ")
 
 		CurView().Open(filename)
 	} else {
@@ -322,25 +391,10 @@ func VSplit(args []string) {
 	if len(args) == 0 {
 		CurView().VSplit(NewBufferFromString("", ""))
 	} else {
-		filename := args[0]
-		home, _ := homedir.Dir()
-		filename = strings.Replace(filename, "~", home, 1)
-		file, err := os.Open(filename)
-		fileInfo, _ := os.Stat(filename)
-
-		if err == nil && fileInfo.IsDir() {
-			messenger.Error(filename, " is a directory")
-			return
-		}
-
-		defer file.Close()
-
-		var buf *Buffer
+		buf, err := NewBufferFromFile(args[0])
 		if err != nil {
-			// File does not exist -- create an empty buffer with that name
-			buf = NewBufferFromString("", filename)
-		} else {
-			buf = NewBuffer(file, FSize(file), filename)
+			messenger.Error(err)
+			return
 		}
 		CurView().VSplit(buf)
 	}
@@ -352,25 +406,10 @@ func HSplit(args []string) {
 	if len(args) == 0 {
 		CurView().HSplit(NewBufferFromString("", ""))
 	} else {
-		filename := args[0]
-		home, _ := homedir.Dir()
-		filename = strings.Replace(filename, "~", home, 1)
-		file, err := os.Open(filename)
-		fileInfo, _ := os.Stat(filename)
-
-		if err == nil && fileInfo.IsDir() {
-			messenger.Error(filename, " is a directory")
-			return
-		}
-
-		defer file.Close()
-
-		var buf *Buffer
+		buf, err := NewBufferFromFile(args[0])
 		if err != nil {
-			// File does not exist -- create an empty buffer with that name
-			buf = NewBufferFromString("", filename)
-		} else {
-			buf = NewBuffer(file, FSize(file), filename)
+			messenger.Error(err)
+			return
 		}
 		CurView().HSplit(buf)
 	}
@@ -393,24 +432,10 @@ func NewTab(args []string) {
 	if len(args) == 0 {
 		CurView().AddTab(true)
 	} else {
-		filename := args[0]
-		home, _ := homedir.Dir()
-		filename = strings.Replace(filename, "~", home, 1)
-		file, err := os.Open(filename)
-		fileInfo, _ := os.Stat(filename)
-
-		if err == nil && fileInfo.IsDir() {
-			messenger.Error(filename, " is a directory")
-			return
-		}
-
-		defer file.Close()
-
-		var buf *Buffer
+		buf, err := NewBufferFromFile(args[0])
 		if err != nil {
-			buf = NewBufferFromString("", filename)
-		} else {
-			buf = NewBuffer(file, FSize(file), filename)
+			messenger.Error(err)
+			return
 		}
 
 		tab := NewTabFromView(NewView(buf))
@@ -419,7 +444,7 @@ func NewTab(args []string) {
 		curTab = len(tabs) - 1
 		if len(tabs) == 2 {
 			for _, t := range tabs {
-				for _, v := range t.views {
+				for _, v := range t.Views {
 					v.ToggleTabbar()
 				}
 			}
@@ -473,6 +498,20 @@ func Show(args []string) {
 	messenger.Message(option)
 }
 
+// ShowKey displays the action that a key is bound to
+func ShowKey(args []string) {
+	if len(args) < 1 {
+		messenger.Error("Please provide a key to show")
+		return
+	}
+
+	if action, ok := bindingsStr[args[0]]; ok {
+		messenger.Message(action)
+	} else {
+		messenger.Message(args[0], " has no binding")
+	}
+}
+
 // Bind creates a new keybinding
 func Bind(args []string) {
 	if len(args) < 2 {
@@ -485,7 +524,7 @@ func Bind(args []string) {
 // Run runs a shell command in the background
 func Run(args []string) {
 	// Run a shell command in the background (openTerm is false)
-	HandleShellCommand(JoinCommandArgs(args...), false, true)
+	HandleShellCommand(shellwords.Join(args...), false, true)
 }
 
 // Quit closes the main view
@@ -506,20 +545,37 @@ func Save(args []string) {
 
 // Replace runs search and replace
 func Replace(args []string) {
-	if len(args) < 2 {
+	if len(args) < 2 || len(args) > 4 {
 		// We need to find both a search and replace expression
 		messenger.Error("Invalid replace statement: " + strings.Join(args, " "))
 		return
 	}
 
-	var flags string
-	if len(args) == 3 {
-		// The user included some flags
-		flags = args[2]
+	all := false
+	noRegex := false
+
+	if len(args) > 2 {
+		for _, arg := range args[2:] {
+			switch arg {
+			case "-a":
+				all = true
+			case "-l":
+				noRegex = true
+			default:
+				messenger.Error("Invalid flag: " + arg)
+				return
+			}
+		}
 	}
 
 	search := string(args[0])
+
+	if noRegex {
+		search = regexp.QuoteMeta(search)
+	}
+
 	replace := string(args[1])
+	replaceBytes := []byte(replace)
 
 	regex, err := regexp.Compile("(?m)" + search)
 	if err != nil {
@@ -531,7 +587,25 @@ func Replace(args []string) {
 	view := CurView()
 
 	found := 0
-	if strings.Contains(flags, "c") {
+	replaceAll := func() {
+		var deltas []Delta
+		for i := 0; i < view.Buf.LinesNum(); i++ {
+			newText := regex.ReplaceAllFunc(view.Buf.lines[i].data, func(in []byte) []byte {
+				found++
+				return replaceBytes
+			})
+
+			from := Loc{0, i}
+			to := Loc{utf8.RuneCount(view.Buf.lines[i].data), i}
+
+			deltas = append(deltas, Delta{string(newText), from, to})
+		}
+		view.Buf.MultipleReplace(deltas)
+	}
+
+	if all {
+		replaceAll()
+	} else {
 		for {
 			// The 'check' flag was used
 			Search(search, view, true)
@@ -540,7 +614,7 @@ func Replace(args []string) {
 			}
 			view.Relocate()
 			RedrawAll()
-			choice, canceled := messenger.YesNoPrompt("Perform replacement? (y,n)")
+			choice, canceled := messenger.LetterPrompt("Perform replacement? (y,n,a)", 'y', 'n', 'a')
 			if canceled {
 				if view.Cursor.HasSelection() {
 					view.Cursor.Loc = view.Cursor.CurSelection[0]
@@ -548,42 +622,27 @@ func Replace(args []string) {
 				}
 				messenger.Reset()
 				break
-			}
-			if choice {
+			} else if choice == 'a' {
+				if view.Cursor.HasSelection() {
+					view.Cursor.Loc = view.Cursor.CurSelection[0]
+					view.Cursor.ResetSelection()
+				}
+				messenger.Reset()
+				replaceAll()
+				break
+			} else if choice == 'y' {
 				view.Cursor.DeleteSelection()
 				view.Buf.Insert(view.Cursor.Loc, replace)
 				view.Cursor.ResetSelection()
 				messenger.Reset()
 				found++
+			}
+			if view.Cursor.HasSelection() {
+				searchStart = view.Cursor.CurSelection[1]
 			} else {
-				if view.Cursor.HasSelection() {
-					searchStart = ToCharPos(view.Cursor.CurSelection[1], view.Buf)
-				} else {
-					searchStart = ToCharPos(view.Cursor.Loc, view.Buf)
-				}
-				continue
+				searchStart = view.Cursor.Loc
 			}
 		}
-	} else {
-		// var deltas []Delta
-		for i := 0; i < view.Buf.LinesNum(); i++ {
-			// view.Buf.lines[i].data = regex.ReplaceAll(view.Buf.lines[i].data, []byte(replace))
-			for {
-				m := regex.FindIndex(view.Buf.lines[i].data)
-
-				if m != nil {
-					from := Loc{m[0], i}
-					to := Loc{m[1], i}
-
-					// deltas = append(deltas, Delta{replace, from, to})
-					view.Buf.Replace(from, to, replace)
-					found++
-				} else {
-					break
-				}
-			}
-		}
-		// view.Buf.MultipleReplace(deltas)
 	}
 	view.Cursor.Relocate()
 
@@ -596,93 +655,33 @@ func Replace(args []string) {
 	}
 }
 
-// RunShellCommand executes a shell command and returns the output/error
-func RunShellCommand(input string) (string, error) {
-	inputCmd := SplitCommandArgs(input)[0]
-	args := SplitCommandArgs(input)[1:]
-
-	cmd := exec.Command(inputCmd, args...)
-	outputBytes := &bytes.Buffer{}
-	cmd.Stdout = outputBytes
-	cmd.Stderr = outputBytes
-	cmd.Start()
-	err := cmd.Wait() // wait for command to finish
-	outstring := outputBytes.String()
-	return outstring, err
+// ReplaceAll replaces search term all at once
+func ReplaceAll(args []string) {
+	// aliased to Replace command
+	Replace(append(args, "-a"))
 }
 
-// HandleShellCommand runs the shell command
-// The openTerm argument specifies whether a terminal should be opened (for viewing output
-// or interacting with stdin)
-func HandleShellCommand(input string, openTerm bool, waitToFinish bool) string {
-	inputCmd := SplitCommandArgs(input)[0]
-	if !openTerm {
-		// Simply run the command in the background and notify the user when it's done
-		messenger.Message("Running...")
-		go func() {
-			output, err := RunShellCommand(input)
-			totalLines := strings.Split(output, "\n")
-
-			if len(totalLines) < 3 {
-				if err == nil {
-					messenger.Message(inputCmd, " exited without error")
-				} else {
-					messenger.Message(inputCmd, " exited with error: ", err, ": ", output)
-				}
-			} else {
-				messenger.Message(output)
-			}
-			// We have to make sure to redraw
-			RedrawAll()
-		}()
+// Term opens a terminal in the current view
+func Term(args []string) {
+	var err error
+	if len(args) == 0 {
+		err = CurView().StartTerminal([]string{os.Getenv("SHELL"), "-i"}, true, false, "")
 	} else {
-		// Shut down the screen because we're going to interact directly with the shell
-		screen.Fini()
-		screen = nil
-
-		args := SplitCommandArgs(input)[1:]
-
-		// Set up everything for the command
-		var outputBuf bytes.Buffer
-		cmd := exec.Command(inputCmd, args...)
-		cmd.Stdin = os.Stdin
-		cmd.Stdout = io.MultiWriter(os.Stdout, &outputBuf)
-		cmd.Stderr = os.Stderr
-
-		// This is a trap for Ctrl-C so that it doesn't kill micro
-		// Instead we trap Ctrl-C to kill the program we're running
-		c := make(chan os.Signal, 1)
-		signal.Notify(c, os.Interrupt)
-		go func() {
-			for range c {
-				cmd.Process.Kill()
-			}
-		}()
-
-		cmd.Start()
-		err := cmd.Wait()
-
-		output := outputBuf.String()
-		if err != nil {
-			output = err.Error()
-		}
-
-		if waitToFinish {
-			// This is just so we don't return right away and let the user press enter to return
-			TermMessage("")
-		}
-
-		// Start the screen back up
-		InitScreen()
-
-		return output
+		err = CurView().StartTerminal(args, true, false, "")
+	}
+	if err != nil {
+		messenger.Error(err)
 	}
-	return ""
 }
 
 // HandleCommand handles input from the user
 func HandleCommand(input string) {
-	args := SplitCommandArgs(input)
+	args, err := shellwords.Split(input)
+	if err != nil {
+		messenger.Error("Error parsing args ", err)
+		return
+	}
+
 	inputCmd := args[0]
 
 	if _, ok := commands[inputCmd]; !ok {

cmd/micro/cursor.go

@@ -1,6 +1,8 @@
 package main
 
-import "github.com/zyedidia/clipboard"
+import (
+	"github.com/zyedidia/clipboard"
+)
 
 // The Cursor struct stores the location of the cursor in the view
 // The complicated part about the cursor is storing its location.
@@ -21,15 +23,27 @@ type Cursor struct {
 	// This is used for line and word selection where it is necessary
 	// to know what the original selection was
 	OrigSelection [2]Loc
+
+	// Which cursor index is this (for multiple cursors)
+	Num int
 }
 
-// Goto puts the cursor at the given cursor's location and gives the current cursor its selection too
+// Goto puts the cursor at the given cursor's location and gives
+// the current cursor its selection too
 func (c *Cursor) Goto(b Cursor) {
 	c.X, c.Y, c.LastVisualX = b.X, b.Y, b.LastVisualX
 	c.OrigSelection, c.CurSelection = b.OrigSelection, b.CurSelection
 }
 
-// CopySelection copies the user's selection to either "primary" or "clipboard"
+// GotoLoc puts the cursor at the given cursor's location and gives
+// the current cursor its selection too
+func (c *Cursor) GotoLoc(l Loc) {
+	c.X, c.Y = l.X, l.Y
+	c.LastVisualX = c.GetVisualX()
+}
+
+// CopySelection copies the user's selection to either "primary"
+// or "clipboard"
 func (c *Cursor) CopySelection(target string) {
 	if c.HasSelection() {
 		if target != "primary" || c.buf.Settings["useprimary"].(bool) {
@@ -146,7 +160,8 @@ func (c *Cursor) SelectWord() {
 	c.Loc = c.CurSelection[1]
 }
 
-// AddWordToSelection adds the word the cursor is currently on to the selection
+// AddWordToSelection adds the word the cursor is currently on
+// to the selection
 func (c *Cursor) AddWordToSelection() {
 	if c.Loc.GreaterThan(c.OrigSelection[0]) && c.Loc.LessThan(c.OrigSelection[1]) {
 		c.CurSelection = c.OrigSelection
@@ -178,7 +193,8 @@ func (c *Cursor) AddWordToSelection() {
 	c.Loc = c.CurSelection[1]
 }
 
-// SelectTo selects from the current cursor location to the given location
+// SelectTo selects from the current cursor location to the given
+// location
 func (c *Cursor) SelectTo(loc Loc) {
 	if loc.GreaterThan(c.OrigSelection[0]) {
 		c.SetSelectionStart(c.OrigSelection[0])
@@ -245,19 +261,19 @@ func (c *Cursor) UpN(amount int) {
 	proposedY := c.Y - amount
 	if proposedY < 0 {
 		proposedY = 0
+		c.LastVisualX = 0
 	} else if proposedY >= c.buf.NumLines {
 		proposedY = c.buf.NumLines - 1
 	}
-	if proposedY == c.Y {
-		return
+
+	runes := []rune(c.buf.Line(c.Y))
+	c.X = c.GetCharPosInLine(proposedY, c.LastVisualX)
+
+	if c.X > len(runes) || (amount < 0 && proposedY == c.Y) {
+		c.X = len(runes)
 	}
 
 	c.Y = proposedY
-	runes := []rune(c.buf.Line(c.Y))
-	c.X = c.GetCharPosInLine(c.Y, c.LastVisualX)
-	if c.X > len(runes) {
-		c.X = len(runes)
-	}
 }
 
 // DownN moves the cursor down N lines (if possible)
@@ -275,7 +291,8 @@ func (c *Cursor) Down() {
 	c.DownN(1)
 }
 
-// Left moves the cursor left one cell (if possible) or to the last line if it is at the beginning
+// Left moves the cursor left one cell (if possible) or to
+// the previous line if it is at the beginning
 func (c *Cursor) Left() {
 	if c.Loc == c.buf.Start() {
 		return
@@ -289,7 +306,8 @@ func (c *Cursor) Left() {
 	c.LastVisualX = c.GetVisualX()
 }
 
-// Right moves the cursor right one cell (if possible) or to the next line if it is at the end
+// Right moves the cursor right one cell (if possible) or
+// to the next line if it is at the end
 func (c *Cursor) Right() {
 	if c.Loc == c.buf.End() {
 		return
@@ -315,7 +333,21 @@ func (c *Cursor) Start() {
 	c.LastVisualX = c.GetVisualX()
 }
 
-// GetCharPosInLine gets the char position of a visual x y coordinate (this is necessary because tabs are 1 char but 4 visual spaces)
+// StartOfText moves the cursor to the first non-whitespace rune of 
+// the line it is on
+func (c *Cursor) StartOfText() {
+	c.Start()
+	for IsWhitespace(c.RuneUnder(c.X)) {
+		if c.X == Count(c.buf.Line(c.Y)) {
+			break
+		}
+		c.Right()
+	}
+}
+
+// GetCharPosInLine gets the char position of a visual x y
+// coordinate (this is necessary because tabs are 1 char but
+// 4 visual spaces)
 func (c *Cursor) GetCharPosInLine(lineNum, visualPos int) int {
 	// Get the tab size
 	tabSize := int(c.buf.Settings["tabsize"].(float64))
@@ -334,11 +366,25 @@ func (c *Cursor) GetCharPosInLine(lineNum, visualPos int) int {
 func (c *Cursor) GetVisualX() int {
 	runes := []rune(c.buf.Line(c.Y))
 	tabSize := int(c.buf.Settings["tabsize"].(float64))
+	if c.X > len(runes) {
+		c.X = len(runes) - 1
+	}
+
+	if c.X < 0 {
+		c.X = 0
+	}
+
 	return StringWidth(string(runes[:c.X]), tabSize)
 }
 
-// Relocate makes sure that the cursor is inside the bounds of the buffer
-// If it isn't, it moves it to be within the buffer's lines
+// StoreVisualX stores the current visual x value in the cursor
+func (c *Cursor) StoreVisualX() {
+	c.LastVisualX = c.GetVisualX()
+}
+
+// Relocate makes sure that the cursor is inside the bounds
+// of the buffer If it isn't, it moves it to be within the
+// buffer's lines
 func (c *Cursor) Relocate() {
 	if c.Y < 0 {
 		c.Y = 0

cmd/micro/eventhandler.go

@@ -28,6 +28,7 @@ type TextEvent struct {
 	Time      time.Time
 }
 
+// A Delta is a change to the buffer
 type Delta struct {
 	Text  string
 	Start Loc
@@ -48,6 +49,11 @@ func ExecuteTextEvent(t *TextEvent, buf *Buffer) {
 		for i, d := range t.Deltas {
 			t.Deltas[i].Text = buf.remove(d.Start, d.End)
 			buf.insert(d.Start, []byte(d.Text))
+			t.Deltas[i].Start = d.Start
+			t.Deltas[i].End = Loc{d.Start.X + Count(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]
 		}
 	}
 }
@@ -97,30 +103,65 @@ func (eh *EventHandler) ApplyDiff(new string) {
 // Insert creates an insert text event and executes it
 func (eh *EventHandler) Insert(start Loc, text string) {
 	e := &TextEvent{
-		C:         eh.buf.Cursor,
+		C:         *eh.buf.cursors[eh.buf.curCursor],
 		EventType: TextEventInsert,
-		Deltas:    []Delta{Delta{text, start, Loc{0, 0}}},
+		Deltas:    []Delta{{text, start, Loc{0, 0}}},
 		Time:      time.Now(),
 	}
 	eh.Execute(e)
 	e.Deltas[0].End = start.Move(Count(text), eh.buf)
+	end := e.Deltas[0].End
+
+	for _, c := range eh.buf.cursors {
+		move := func(loc Loc) Loc {
+			if start.Y != end.Y && loc.GreaterThan(start) {
+				loc.Y += end.Y - start.Y
+			} else if loc.Y == start.Y && loc.GreaterEqual(start) {
+				loc = loc.Move(Count(text), eh.buf)
+			}
+			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()
+	}
 }
 
 // Remove creates a remove text event and executes it
 func (eh *EventHandler) Remove(start, end Loc) {
 	e := &TextEvent{
-		C:         eh.buf.Cursor,
+		C:         *eh.buf.cursors[eh.buf.curCursor],
 		EventType: TextEventRemove,
-		Deltas:    []Delta{Delta{"", start, end}},
+		Deltas:    []Delta{{"", start, end}},
 		Time:      time.Now(),
 	}
 	eh.Execute(e)
+
+	for _, c := range eh.buf.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.Move(-Diff(start, end, eh.buf), eh.buf)
+			}
+			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()
+	}
 }
 
 // MultipleReplace creates an multiple insertions executes them
 func (eh *EventHandler) MultipleReplace(deltas []Delta) {
 	e := &TextEvent{
-		C:         eh.buf.Cursor,
+		C:         *eh.buf.cursors[eh.buf.curCursor],
 		EventType: TextEventReplace,
 		Deltas:    deltas,
 		Time:      time.Now(),
@@ -195,8 +236,12 @@ func (eh *EventHandler) UndoOneEvent() {
 
 	// Set the cursor in the right place
 	teCursor := t.C
-	t.C = eh.buf.Cursor
-	eh.buf.Cursor.Goto(teCursor)
+	if teCursor.Num >= 0 && teCursor.Num < len(eh.buf.cursors) {
+		t.C = *eh.buf.cursors[teCursor.Num]
+		eh.buf.cursors[teCursor.Num].Goto(teCursor)
+	} else {
+		teCursor.Num = -1
+	}
 
 	// Push it to the redo stack
 	eh.RedoStack.Push(t)
@@ -238,8 +283,12 @@ func (eh *EventHandler) RedoOneEvent() {
 	UndoTextEvent(t, eh.buf)
 
 	teCursor := t.C
-	t.C = eh.buf.Cursor
-	eh.buf.Cursor.Goto(teCursor)
+	if teCursor.Num >= 0 && teCursor.Num < len(eh.buf.cursors) {
+		t.C = *eh.buf.cursors[teCursor.Num]
+		eh.buf.cursors[teCursor.Num].Goto(teCursor)
+	} else {
+		teCursor.Num = -1
+	}
 
 	eh.UndoStack.Push(t)
 }

cmd/micro/highlight/ftdetect.go

@@ -2,7 +2,7 @@ package highlight
 
 import "regexp"
 
-// DetectFiletype will use the list of syntax definitions provided and the filename and first line of the file
+// MatchFiletype will use the list of syntax definitions provided and the filename and first line of the file
 // to determine the filetype of the file
 // It will return the corresponding syntax definition for the filetype
 func MatchFiletype(ftdetect [2]*regexp.Regexp, filename string, firstLine []byte) bool {

cmd/micro/highlight/highlighter.go

@@ -6,16 +6,50 @@ import (
 	"unicode/utf8"
 )
 
+func sliceStart(slc []byte, index int) []byte {
+	len := len(slc)
+	i := 0
+	totalSize := 0
+	for totalSize < len {
+		if i >= index {
+			return slc[totalSize:]
+		}
+
+		_, size := utf8.DecodeRune(slc[totalSize:])
+		totalSize += size
+		i++
+	}
+
+	return slc[totalSize:]
+}
+
+func sliceEnd(slc []byte, index int) []byte {
+	len := len(slc)
+	i := 0
+	totalSize := 0
+	for totalSize < len {
+		if i >= index {
+			return slc[:totalSize]
+		}
+
+		_, size := utf8.DecodeRune(slc[totalSize:])
+		totalSize += size
+		i++
+	}
+
+	return slc[:totalSize]
+}
+
 // RunePos returns the rune index of a given byte index
 // This could cause problems if the byte index is between code points
-func runePos(p int, str string) int {
+func runePos(p int, str []byte) int {
 	if p < 0 {
 		return 0
 	}
 	if p >= len(str) {
-		return utf8.RuneCountInString(str)
+		return utf8.RuneCount(str)
 	}
-	return utf8.RuneCountInString(str[:p])
+	return utf8.RuneCount(str[:p])
 }
 
 func combineLineMatch(src, dst LineMatch) LineMatch {
@@ -36,7 +70,7 @@ type State *region
 
 // LineStates is an interface for a buffer-like object which can also store the states and matches for every line
 type LineStates interface {
-	Line(n int) string
+	LineBytes(n int) []byte
 	LinesNum() int
 	State(lineN int) State
 	SetState(lineN int, s State)
@@ -60,7 +94,7 @@ func NewHighlighter(def *Def) *Highlighter {
 // color's group (represented as one byte)
 type LineMatch map[int]Group
 
-func findIndex(regex *regexp.Regexp, skip *regexp.Regexp, str []rune, canMatchStart, canMatchEnd bool) []int {
+func findIndex(regex *regexp.Regexp, skip *regexp.Regexp, str []byte, canMatchStart, canMatchEnd bool) []int {
 	regexStr := regex.String()
 	if strings.Contains(regexStr, "^") {
 		if !canMatchStart {
@@ -75,12 +109,12 @@ func findIndex(regex *regexp.Regexp, skip *regexp.Regexp, str []rune, canMatchSt
 
 	var strbytes []byte
 	if skip != nil {
-		strbytes = skip.ReplaceAllFunc([]byte(string(str)), func(match []byte) []byte {
+		strbytes = skip.ReplaceAllFunc(str, func(match []byte) []byte {
 			res := make([]byte, utf8.RuneCount(match))
 			return res
 		})
 	} else {
-		strbytes = []byte(string(str))
+		strbytes = str
 	}
 
 	match := regex.FindIndex(strbytes)
@@ -88,10 +122,10 @@ func findIndex(regex *regexp.Regexp, skip *regexp.Regexp, str []rune, canMatchSt
 		return nil
 	}
 	// return []int{match.Index, match.Index + match.Length}
-	return []int{runePos(match[0], string(str)), runePos(match[1], string(str))}
+	return []int{runePos(match[0], str), runePos(match[1], str)}
 }
 
-func findAllIndex(regex *regexp.Regexp, str []rune, canMatchStart, canMatchEnd bool) [][]int {
+func findAllIndex(regex *regexp.Regexp, str []byte, canMatchStart, canMatchEnd bool) [][]int {
 	regexStr := regex.String()
 	if strings.Contains(regexStr, "^") {
 		if !canMatchStart {
@@ -103,17 +137,16 @@ func findAllIndex(regex *regexp.Regexp, str []rune, canMatchStart, canMatchEnd b
 			return nil
 		}
 	}
-	matches := regex.FindAllIndex([]byte(string(str)), -1)
+	matches := regex.FindAllIndex(str, -1)
 	for i, m := range matches {
-		matches[i][0] = runePos(m[0], string(str))
-		matches[i][1] = runePos(m[1], string(str))
+		matches[i][0] = runePos(m[0], str)
+		matches[i][1] = runePos(m[1], str)
 	}
 	return matches
 }
 
-func (h *Highlighter) highlightRegion(highlights LineMatch, start int, canMatchEnd bool, lineNum int, line []rune, curRegion *region, statesOnly bool) LineMatch {
-	// highlights := make(LineMatch)
-
+func (h *Highlighter) highlightRegion(highlights LineMatch, start int, canMatchEnd bool, lineNum int, line []byte, curRegion *region, statesOnly bool) LineMatch {
+	lineLen := utf8.RuneCount(line)
 	if start == 0 {
 		if !statesOnly {
 			if _, ok := highlights[0]; !ok {
@@ -130,20 +163,20 @@ func (h *Highlighter) highlightRegion(highlights LineMatch, start int, canMatchE
 		if curRegion.parent == nil {
 			if !statesOnly {
 				highlights[start+loc[1]] = 0
-				h.highlightRegion(highlights, start, false, lineNum, line[:loc[0]], curRegion, statesOnly)
+				h.highlightRegion(highlights, start, false, lineNum, sliceEnd(line, loc[0]), curRegion, statesOnly)
 			}
-			h.highlightEmptyRegion(highlights, start+loc[1], canMatchEnd, lineNum, line[loc[1]:], statesOnly)
+			h.highlightEmptyRegion(highlights, start+loc[1], canMatchEnd, lineNum, sliceStart(line, loc[1]), statesOnly)
 			return highlights
 		}
 		if !statesOnly {
 			highlights[start+loc[1]] = curRegion.parent.group
-			h.highlightRegion(highlights, start, false, lineNum, line[:loc[0]], curRegion, statesOnly)
+			h.highlightRegion(highlights, start, false, lineNum, sliceEnd(line, loc[0]), curRegion, statesOnly)
 		}
-		h.highlightRegion(highlights, start+loc[1], canMatchEnd, lineNum, line[loc[1]:], curRegion.parent, statesOnly)
+		h.highlightRegion(highlights, start+loc[1], canMatchEnd, lineNum, sliceStart(line, loc[1]), curRegion.parent, statesOnly)
 		return highlights
 	}
 
-	if len(line) == 0 || statesOnly {
+	if lineLen == 0 || statesOnly {
 		if canMatchEnd {
 			h.lastRegion = curRegion
 		}
@@ -151,7 +184,7 @@ func (h *Highlighter) highlightRegion(highlights LineMatch, start int, canMatchE
 		return highlights
 	}
 
-	firstLoc := []int{len(line), 0}
+	firstLoc := []int{lineLen, 0}
 
 	var firstRegion *region
 	for _, r := range curRegion.rules.regions {
@@ -163,14 +196,14 @@ func (h *Highlighter) highlightRegion(highlights LineMatch, start int, canMatchE
 			}
 		}
 	}
-	if firstLoc[0] != len(line) {
+	if firstLoc[0] != lineLen {
 		highlights[start+firstLoc[0]] = firstRegion.limitGroup
-		h.highlightRegion(highlights, start, false, lineNum, line[:firstLoc[0]], curRegion, statesOnly)
-		h.highlightRegion(highlights, start+firstLoc[1], canMatchEnd, lineNum, line[firstLoc[1]:], firstRegion, statesOnly)
+		h.highlightRegion(highlights, start, false, lineNum, sliceEnd(line, firstLoc[0]), curRegion, statesOnly)
+		h.highlightRegion(highlights, start+firstLoc[1], canMatchEnd, lineNum, sliceStart(line, firstLoc[1]), firstRegion, statesOnly)
 		return highlights
 	}
 
-	fullHighlights := make([]Group, len([]rune(string(line))))
+	fullHighlights := make([]Group, lineLen)
 	for i := 0; i < len(fullHighlights); i++ {
 		fullHighlights[i] = curRegion.group
 	}
@@ -185,9 +218,7 @@ func (h *Highlighter) highlightRegion(highlights LineMatch, start int, canMatchE
 	}
 	for i, h := range fullHighlights {
 		if i == 0 || h != fullHighlights[i-1] {
-			// if _, ok := highlights[start+i]; !ok {
 			highlights[start+i] = h
-			// }
 		}
 	}
 
@@ -198,15 +229,16 @@ func (h *Highlighter) highlightRegion(highlights LineMatch, start int, canMatchE
 	return highlights
 }
 
-func (h *Highlighter) highlightEmptyRegion(highlights LineMatch, start int, canMatchEnd bool, lineNum int, line []rune, statesOnly bool) LineMatch {
-	if len(line) == 0 {
+func (h *Highlighter) highlightEmptyRegion(highlights LineMatch, start int, canMatchEnd bool, lineNum int, line []byte, statesOnly bool) LineMatch {
+	lineLen := utf8.RuneCount(line)
+	if lineLen == 0 {
 		if canMatchEnd {
 			h.lastRegion = nil
 		}
 		return highlights
 	}
 
-	firstLoc := []int{len(line), 0}
+	firstLoc := []int{lineLen, 0}
 	var firstRegion *region
 	for _, r := range h.Def.rules.regions {
 		loc := findIndex(r.start, nil, line, start == 0, canMatchEnd)
@@ -217,12 +249,12 @@ func (h *Highlighter) highlightEmptyRegion(highlights LineMatch, start int, canM
 			}
 		}
 	}
-	if firstLoc[0] != len(line) {
+	if firstLoc[0] != lineLen {
 		if !statesOnly {
 			highlights[start+firstLoc[0]] = firstRegion.limitGroup
 		}
-		h.highlightEmptyRegion(highlights, start, false, lineNum, line[:firstLoc[0]], statesOnly)
-		h.highlightRegion(highlights, start+firstLoc[1], canMatchEnd, lineNum, line[firstLoc[1]:], firstRegion, statesOnly)
+		h.highlightEmptyRegion(highlights, start, false, lineNum, sliceEnd(line, firstLoc[0]), statesOnly)
+		h.highlightRegion(highlights, start+firstLoc[1], canMatchEnd, lineNum, sliceStart(line, firstLoc[1]), firstRegion, statesOnly)
 		return highlights
 	}
 
@@ -267,7 +299,7 @@ func (h *Highlighter) HighlightString(input string) []LineMatch {
 	var lineMatches []LineMatch
 
 	for i := 0; i < len(lines); i++ {
-		line := []rune(lines[i])
+		line := []byte(lines[i])
 		highlights := make(LineMatch)
 
 		if i == 0 || h.lastRegion == nil {
@@ -283,7 +315,7 @@ func (h *Highlighter) HighlightString(input string) []LineMatch {
 // HighlightStates correctly sets all states for the buffer
 func (h *Highlighter) HighlightStates(input LineStates) {
 	for i := 0; i < input.LinesNum(); i++ {
-		line := []rune(input.Line(i))
+		line := input.LineBytes(i)
 		// highlights := make(LineMatch)
 
 		if i == 0 || h.lastRegion == nil {
@@ -307,7 +339,7 @@ func (h *Highlighter) HighlightMatches(input LineStates, startline, endline int)
 			break
 		}
 
-		line := []rune(input.Line(i))
+		line := input.LineBytes(i)
 		highlights := make(LineMatch)
 
 		var match LineMatch
@@ -331,7 +363,7 @@ func (h *Highlighter) ReHighlightStates(input LineStates, startline int) {
 		h.lastRegion = input.State(startline - 1)
 	}
 	for i := startline; i < input.LinesNum(); i++ {
-		line := []rune(input.Line(i))
+		line := input.LineBytes(i)
 		// highlights := make(LineMatch)
 
 		// var match LineMatch
@@ -353,7 +385,7 @@ func (h *Highlighter) ReHighlightStates(input LineStates, startline int) {
 
 // ReHighlightLine will rehighlight the state and match for a single line
 func (h *Highlighter) ReHighlightLine(input LineStates, lineN int) {
-	line := []rune(input.Line(lineN))
+	line := input.LineBytes(lineN)
 	highlights := make(LineMatch)
 
 	h.lastRegion = nil

cmd/micro/highlight/parser.go

@@ -1,6 +1,7 @@
 package highlight
 
 import (
+	"errors"
 	"fmt"
 	"regexp"
 
@@ -82,6 +83,16 @@ func init() {
 }
 
 func ParseFtDetect(file *File) (r [2]*regexp.Regexp, err error) {
+	defer func() {
+		if r := recover(); r != nil {
+			var ok bool
+			err, ok = r.(error)
+			if !ok {
+				err = fmt.Errorf("pkg: %v", r)
+			}
+		}
+	}()
+
 	rules := file.yamlSrc
 
 	loaded := 0
@@ -112,14 +123,22 @@ func ParseFtDetect(file *File) (r [2]*regexp.Regexp, err error) {
 		}
 	}
 
+	if loaded == 0 {
+		return r, errors.New("No detect regexes found")
+	}
+
 	return r, err
 }
 
 func ParseFile(input []byte) (f *File, err error) {
 	// This is just so if we have an error, we can exit cleanly and return the parse error to the user
 	defer func() {
-		if e := recover(); e != nil {
-			err = e.(error)
+		if r := recover(); r != nil {
+			var ok bool
+			err, ok = r.(error)
+			if !ok {
+				err = fmt.Errorf("pkg: %v", r)
+			}
 		}
 	}()
 
@@ -147,8 +166,12 @@ func ParseFile(input []byte) (f *File, err error) {
 func ParseDef(f *File, header *Header) (s *Def, err error) {
 	// This is just so if we have an error, we can exit cleanly and return the parse error to the user
 	defer func() {
-		if e := recover(); e != nil {
-			err = e.(error)
+		if r := recover(); r != nil {
+			var ok bool
+			err, ok = r.(error)
+			if !ok {
+				err = fmt.Errorf("pkg: %v", r)
+			}
 		}
 	}()
 
@@ -211,8 +234,17 @@ func resolveIncludesInRegion(files []*File, region *region) {
 	}
 }
 
-func parseRules(input []interface{}, curRegion *region) (*rules, error) {
-	rules := new(rules)
+func parseRules(input []interface{}, curRegion *region) (ru *rules, err error) {
+	defer func() {
+		if r := recover(); r != nil {
+			var ok bool
+			err, ok = r.(error)
+			if !ok {
+				err = fmt.Errorf("pkg: %v", r)
+			}
+		}
+	}()
+	ru = new(rules)
 
 	for _, v := range input {
 		rule := v.(map[interface{}]interface{})
@@ -222,7 +254,7 @@ func parseRules(input []interface{}, curRegion *region) (*rules, error) {
 			switch object := val.(type) {
 			case string:
 				if k == "include" {
-					rules.includes = append(rules.includes, object)
+					ru.includes = append(ru.includes, object)
 				} else {
 					// Pattern
 					r, err := regexp.Compile(object)
@@ -236,7 +268,7 @@ func parseRules(input []interface{}, curRegion *region) (*rules, error) {
 						Groups[groupStr] = numGroups
 					}
 					groupNum := Groups[groupStr]
-					rules.patterns = append(rules.patterns, &pattern{groupNum, r})
+					ru.patterns = append(ru.patterns, &pattern{groupNum, r})
 				}
 			case map[interface{}]interface{}:
 				// region
@@ -244,35 +276,43 @@ func parseRules(input []interface{}, curRegion *region) (*rules, error) {
 				if err != nil {
 					return nil, err
 				}
-				rules.regions = append(rules.regions, region)
+				ru.regions = append(ru.regions, region)
 			default:
 				return nil, fmt.Errorf("Bad type %T", object)
 			}
 		}
 	}
 
-	return rules, nil
+	return ru, nil
 }
 
-func parseRegion(group string, regionInfo map[interface{}]interface{}, prevRegion *region) (*region, error) {
-	var err error
+func parseRegion(group string, regionInfo map[interface{}]interface{}, prevRegion *region) (r *region, err error) {
+	defer func() {
+		if r := recover(); r != nil {
+			var ok bool
+			err, ok = r.(error)
+			if !ok {
+				err = fmt.Errorf("pkg: %v", r)
+			}
+		}
+	}()
 
-	region := new(region)
+	r = new(region)
 	if _, ok := Groups[group]; !ok {
 		numGroups++
 		Groups[group] = numGroups
 	}
 	groupNum := Groups[group]
-	region.group = groupNum
-	region.parent = prevRegion
+	r.group = groupNum
+	r.parent = prevRegion
 
-	region.start, err = regexp.Compile(regionInfo["start"].(string))
+	r.start, err = regexp.Compile(regionInfo["start"].(string))
 
 	if err != nil {
 		return nil, err
 	}
 
-	region.end, err = regexp.Compile(regionInfo["end"].(string))
+	r.end, err = regexp.Compile(regionInfo["end"].(string))
 
 	if err != nil {
 		return nil, err
@@ -280,7 +320,7 @@ func parseRegion(group string, regionInfo map[interface{}]interface{}, prevRegio
 
 	// skip is optional
 	if _, ok := regionInfo["skip"]; ok {
-		region.skip, err = regexp.Compile(regionInfo["skip"].(string))
+		r.skip, err = regexp.Compile(regionInfo["skip"].(string))
 
 		if err != nil {
 			return nil, err
@@ -295,20 +335,20 @@ func parseRegion(group string, regionInfo map[interface{}]interface{}, prevRegio
 			Groups[groupStr] = numGroups
 		}
 		groupNum := Groups[groupStr]
-		region.limitGroup = groupNum
+		r.limitGroup = groupNum
 
 		if err != nil {
 			return nil, err
 		}
 	} else {
-		region.limitGroup = region.group
+		r.limitGroup = r.group
 	}
 
-	region.rules, err = parseRules(regionInfo["rules"].([]interface{}), region)
+	r.rules, err = parseRules(regionInfo["rules"].([]interface{}), r)
 
 	if err != nil {
 		return nil, err
 	}
 
-	return region, nil
+	return r, nil
 }

cmd/micro/keymenu.go

@@ -0,0 +1,20 @@
+package main
+
+// DisplayKeyMenu displays the nano-style key menu at the bottom of the screen
+func DisplayKeyMenu() {
+	w, h := screen.Size()
+
+	bot := h - 3
+
+	display := []string{"^Q Quit, ^S Save, ^O Open, ^G Help, ^E Command Bar, ^K Cut Line", "^F Find, ^Z Undo, ^Y Redo, ^A Select All, ^D Duplicate Line, ^T New Tab"}
+
+	for y := 0; y < len(display); y++ {
+		for x := 0; x < w; x++ {
+			if x < len(display[y]) {
+				screen.SetContent(x, bot+y, rune(display[y][x]), nil, defStyle)
+			} else {
+				screen.SetContent(x, bot+y, ' ', nil, defStyle)
+			}
+		}
+	}
+}

cmd/micro/lineArray.go

@@ -29,6 +29,8 @@ func runeToByteIndex(n int, txt []byte) int {
 	return count
 }
 
+// A Line contains the data in bytes as well as a highlight state, match
+// and a flag for whether the highlighting needs to be updated
 type Line struct {
 	data []byte
 
@@ -43,10 +45,12 @@ type LineArray struct {
 	lines []Line
 }
 
+// Append efficiently appends lines together
+// It allocates an additional 10000 lines if the original estimate
+// is incorrect
 func Append(slice []Line, data ...Line) []Line {
 	l := len(slice)
 	if l+len(data) > cap(slice) { // reallocate
-		// Allocate double what's needed, for future growth.
 		newSlice := make([]Line, (l+len(data))+10000)
 		// The copy function is predeclared and works for any slice type.
 		copy(newSlice, slice)
@@ -71,11 +75,20 @@ func NewLineArray(size int64, reader io.Reader) *LineArray {
 	n := 0
 	for {
 		data, err := br.ReadBytes('\n')
+		if len(data) > 1 && data[len(data)-2] == '\r' {
+			data = append(data[:len(data)-2], '\n')
+			if fileformat == 0 {
+				fileformat = 2
+			}
+		} else if len(data) > 0 {
+			if fileformat == 0 {
+				fileformat = 1
+			}
+		}
 
 		if n >= 1000 && loaded >= 0 {
 			totalLinesNum := int(float64(size) * (float64(n) / float64(loaded)))
 			newSlice := make([]Line, len(la.lines), totalLinesNum+10000)
-			// The copy function is predeclared and works for any slice type.
 			copy(newSlice, la.lines)
 			la.lines = newSlice
 			loaded = -1
@@ -87,7 +100,7 @@ func NewLineArray(size int64, reader io.Reader) *LineArray {
 
 		if err != nil {
 			if err == io.EOF {
-				la.lines = Append(la.lines, Line{data[:len(data)], nil, nil, false})
+				la.lines = Append(la.lines, Line{data[:], nil, nil, false})
 				// la.lines = Append(la.lines, Line{data[:len(data)]})
 			}
 			// Last line was read
@@ -114,11 +127,28 @@ func (la *LineArray) String() string {
 	return str
 }
 
+// SaveString returns the string that should be written to disk when
+// the line array is saved
+// It is the same as string but uses crlf or lf line endings depending
+func (la *LineArray) SaveString(useCrlf bool) string {
+	str := ""
+	for i, l := range la.lines {
+		str += string(l.data)
+		if i != len(la.lines)-1 {
+			if useCrlf {
+				str += "\r"
+			}
+			str += "\n"
+		}
+	}
+	return str
+}
+
 // NewlineBelow adds a newline below the given line number
 func (la *LineArray) NewlineBelow(y int) {
-	la.lines = append(la.lines, Line{[]byte(" "), nil, nil, false})
+	la.lines = append(la.lines, Line{[]byte{' '}, nil, nil, false})
 	copy(la.lines[y+2:], la.lines[y+1:])
-	la.lines[y+1] = Line{[]byte(""), la.lines[y].state, nil, false}
+	la.lines[y+1] = Line{[]byte{}, la.lines[y].state, nil, false}
 }
 
 // inserts a byte array at a given location
@@ -216,18 +246,22 @@ func (la *LineArray) Substr(start, end Loc) string {
 	return str
 }
 
+// State gets the highlight state for the given line number
 func (la *LineArray) State(lineN int) highlight.State {
 	return la.lines[lineN].state
 }
 
+// SetState sets the highlight state at the given line number
 func (la *LineArray) SetState(lineN int, s highlight.State) {
 	la.lines[lineN].state = s
 }
 
+// SetMatch sets the match at the given line number
 func (la *LineArray) SetMatch(lineN int, m highlight.LineMatch) {
 	la.lines[lineN].match = m
 }
 
+// Match retrieves the match for the given line number
 func (la *LineArray) Match(lineN int) highlight.LineMatch {
 	return la.lines[lineN].match
 }

cmd/micro/loc.go

@@ -54,6 +54,29 @@ type Loc struct {
 	X, Y int
 }
 
+// Diff returns the distance between two locations
+func Diff(a, b Loc, buf *Buffer) int {
+	if a.Y == b.Y {
+		if a.X > b.X {
+			return a.X - b.X
+		}
+		return b.X - a.X
+	}
+
+	// Make sure a is guaranteed to be less than b
+	if b.LessThan(a) {
+		a, b = b, a
+	}
+
+	loc := 0
+	for i := a.Y + 1; i < b.Y; i++ {
+		// + 1 for the newline
+		loc += Count(buf.Line(i)) + 1
+	}
+	loc += Count(buf.Line(a.Y)) - a.X + b.X + 1
+	return loc
+}
+
 // LessThan returns true if b is smaller
 func (l Loc) LessThan(b Loc) bool {
 	if l.Y < b.Y {

cmd/micro/lua.go

@@ -0,0 +1,539 @@
+package main
+
+import (
+	"errors"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"math"
+	"math/rand"
+	"net"
+	"os"
+	"path"
+	"path/filepath"
+	"regexp"
+	"runtime"
+	"strings"
+	"time"
+
+	luar "layeh.com/gopher-luar"
+
+	lua "github.com/yuin/gopher-lua"
+)
+
+var L *lua.LState
+
+func init() {
+	L = lua.NewState()
+	L.SetGlobal("import", luar.New(L, Import))
+}
+
+// LoadFile loads a lua file
+func LoadFile(module string, file string, data string) error {
+	pluginDef := "local P = {};" + module + " = P;setmetatable(" + module + ", {__index = _G});setfenv(1, P);"
+
+	if fn, err := L.Load(strings.NewReader(pluginDef+data), file); err != nil {
+		return err
+	} else {
+		L.Push(fn)
+		return L.PCall(0, lua.MultRet, nil)
+	}
+}
+
+// Import allows a lua plugin to import a package
+func Import(pkg string) *lua.LTable {
+	switch pkg {
+	case "fmt":
+		return importFmt()
+	case "io":
+		return importIo()
+	case "io/ioutil", "ioutil":
+		return importIoUtil()
+	case "net":
+		return importNet()
+	case "math":
+		return importMath()
+	case "math/rand":
+		return importMathRand()
+	case "os":
+		return importOs()
+	case "runtime":
+		return importRuntime()
+	case "path":
+		return importPath()
+	case "filepath":
+		return importFilePath()
+	case "strings":
+		return importStrings()
+	case "regexp":
+		return importRegexp()
+	case "errors":
+		return importErrors()
+	case "time":
+		return importTime()
+	default:
+		return nil
+	}
+}
+
+func importFmt() *lua.LTable {
+	pkg := L.NewTable()
+
+	L.SetField(pkg, "tErrorf", luar.New(L, fmt.Errorf))
+	L.SetField(pkg, "Fprint", luar.New(L, fmt.Fprint))
+	L.SetField(pkg, "Fprintf", luar.New(L, fmt.Fprintf))
+	L.SetField(pkg, "Fprintln", luar.New(L, fmt.Fprintln))
+	L.SetField(pkg, "Fscan", luar.New(L, fmt.Fscan))
+	L.SetField(pkg, "Fscanf", luar.New(L, fmt.Fscanf))
+	L.SetField(pkg, "Fscanln", luar.New(L, fmt.Fscanln))
+	L.SetField(pkg, "Print", luar.New(L, fmt.Print))
+	L.SetField(pkg, "Printf", luar.New(L, fmt.Printf))
+	L.SetField(pkg, "Println", luar.New(L, fmt.Println))
+	L.SetField(pkg, "Scan", luar.New(L, fmt.Scan))
+	L.SetField(pkg, "Scanf", luar.New(L, fmt.Scanf))
+	L.SetField(pkg, "Scanln", luar.New(L, fmt.Scanln))
+	L.SetField(pkg, "Sprint", luar.New(L, fmt.Sprint))
+	L.SetField(pkg, "Sprintf", luar.New(L, fmt.Sprintf))
+	L.SetField(pkg, "Sprintln", luar.New(L, fmt.Sprintln))
+	L.SetField(pkg, "Sscan", luar.New(L, fmt.Sscan))
+	L.SetField(pkg, "Sscanf", luar.New(L, fmt.Sscanf))
+	L.SetField(pkg, "Sscanln", luar.New(L, fmt.Sscanln))
+
+	return pkg
+}
+
+func importIo() *lua.LTable {
+	pkg := L.NewTable()
+
+	L.SetField(pkg, "Copy", luar.New(L, io.Copy))
+	L.SetField(pkg, "CopyN", luar.New(L, io.CopyN))
+	L.SetField(pkg, "EOF", luar.New(L, io.EOF))
+	L.SetField(pkg, "ErrClosedPipe", luar.New(L, io.ErrClosedPipe))
+	L.SetField(pkg, "ErrNoProgress", luar.New(L, io.ErrNoProgress))
+	L.SetField(pkg, "ErrShortBuffer", luar.New(L, io.ErrShortBuffer))
+	L.SetField(pkg, "ErrShortWrite", luar.New(L, io.ErrShortWrite))
+	L.SetField(pkg, "ErrUnexpectedEOF", luar.New(L, io.ErrUnexpectedEOF))
+	L.SetField(pkg, "LimitReader", luar.New(L, io.LimitReader))
+	L.SetField(pkg, "MultiReader", luar.New(L, io.MultiReader))
+	L.SetField(pkg, "MultiWriter", luar.New(L, io.MultiWriter))
+	L.SetField(pkg, "NewSectionReader", luar.New(L, io.NewSectionReader))
+	L.SetField(pkg, "Pipe", luar.New(L, io.Pipe))
+	L.SetField(pkg, "ReadAtLeast", luar.New(L, io.ReadAtLeast))
+	L.SetField(pkg, "ReadFull", luar.New(L, io.ReadFull))
+	L.SetField(pkg, "TeeReader", luar.New(L, io.TeeReader))
+	L.SetField(pkg, "WriteString", luar.New(L, io.WriteString))
+
+	return pkg
+}
+
+func importIoUtil() *lua.LTable {
+	pkg := L.NewTable()
+
+	L.SetField(pkg, "ReadAll", luar.New(L, ioutil.ReadAll))
+	L.SetField(pkg, "ReadDir", luar.New(L, ioutil.ReadDir))
+	L.SetField(pkg, "ReadFile", luar.New(L, ioutil.ReadFile))
+	L.SetField(pkg, "WriteFile", luar.New(L, ioutil.WriteFile))
+
+	return pkg
+}
+
+func importNet() *lua.LTable {
+	pkg := L.NewTable()
+
+	L.SetField(pkg, "CIDRMask", luar.New(L, net.CIDRMask))
+	L.SetField(pkg, "Dial", luar.New(L, net.Dial))
+	L.SetField(pkg, "DialIP", luar.New(L, net.DialIP))
+	L.SetField(pkg, "DialTCP", luar.New(L, net.DialTCP))
+	L.SetField(pkg, "DialTimeout", luar.New(L, net.DialTimeout))
+	L.SetField(pkg, "DialUDP", luar.New(L, net.DialUDP))
+	L.SetField(pkg, "DialUnix", luar.New(L, net.DialUnix))
+	L.SetField(pkg, "ErrWriteToConnected", luar.New(L, net.ErrWriteToConnected))
+	L.SetField(pkg, "FileConn", luar.New(L, net.FileConn))
+	L.SetField(pkg, "FileListener", luar.New(L, net.FileListener))
+	L.SetField(pkg, "FilePacketConn", luar.New(L, net.FilePacketConn))
+	L.SetField(pkg, "FlagBroadcast", luar.New(L, net.FlagBroadcast))
+	L.SetField(pkg, "FlagLoopback", luar.New(L, net.FlagLoopback))
+	L.SetField(pkg, "FlagMulticast", luar.New(L, net.FlagMulticast))
+	L.SetField(pkg, "FlagPointToPoint", luar.New(L, net.FlagPointToPoint))
+	L.SetField(pkg, "FlagUp", luar.New(L, net.FlagUp))
+	L.SetField(pkg, "IPv4", luar.New(L, net.IPv4))
+	L.SetField(pkg, "IPv4Mask", luar.New(L, net.IPv4Mask))
+	L.SetField(pkg, "IPv4allrouter", luar.New(L, net.IPv4allrouter))
+	L.SetField(pkg, "IPv4allsys", luar.New(L, net.IPv4allsys))
+	L.SetField(pkg, "IPv4bcast", luar.New(L, net.IPv4bcast))
+	L.SetField(pkg, "IPv4len", luar.New(L, net.IPv4len))
+	L.SetField(pkg, "IPv4zero", luar.New(L, net.IPv4zero))
+	L.SetField(pkg, "IPv6interfacelocalallnodes", luar.New(L, net.IPv6interfacelocalallnodes))
+	L.SetField(pkg, "IPv6len", luar.New(L, net.IPv6len))
+	L.SetField(pkg, "IPv6linklocalallnodes", luar.New(L, net.IPv6linklocalallnodes))
+	L.SetField(pkg, "IPv6linklocalallrouters", luar.New(L, net.IPv6linklocalallrouters))
+	L.SetField(pkg, "IPv6loopback", luar.New(L, net.IPv6loopback))
+	L.SetField(pkg, "IPv6unspecified", luar.New(L, net.IPv6unspecified))
+	L.SetField(pkg, "IPv6zero", luar.New(L, net.IPv6zero))
+	L.SetField(pkg, "InterfaceAddrs", luar.New(L, net.InterfaceAddrs))
+	L.SetField(pkg, "InterfaceByIndex", luar.New(L, net.InterfaceByIndex))
+	L.SetField(pkg, "InterfaceByName", luar.New(L, net.InterfaceByName))
+	L.SetField(pkg, "Interfaces", luar.New(L, net.Interfaces))
+	L.SetField(pkg, "JoinHostPort", luar.New(L, net.JoinHostPort))
+	L.SetField(pkg, "Listen", luar.New(L, net.Listen))
+	L.SetField(pkg, "ListenIP", luar.New(L, net.ListenIP))
+	L.SetField(pkg, "ListenMulticastUDP", luar.New(L, net.ListenMulticastUDP))
+	L.SetField(pkg, "ListenPacket", luar.New(L, net.ListenPacket))
+	L.SetField(pkg, "ListenTCP", luar.New(L, net.ListenTCP))
+	L.SetField(pkg, "ListenUDP", luar.New(L, net.ListenUDP))
+	L.SetField(pkg, "ListenUnix", luar.New(L, net.ListenUnix))
+	L.SetField(pkg, "ListenUnixgram", luar.New(L, net.ListenUnixgram))
+	L.SetField(pkg, "LookupAddr", luar.New(L, net.LookupAddr))
+	L.SetField(pkg, "LookupCNAME", luar.New(L, net.LookupCNAME))
+	L.SetField(pkg, "LookupHost", luar.New(L, net.LookupHost))
+	L.SetField(pkg, "LookupIP", luar.New(L, net.LookupIP))
+	L.SetField(pkg, "LookupMX", luar.New(L, net.LookupMX))
+	L.SetField(pkg, "LookupNS", luar.New(L, net.LookupNS))
+	L.SetField(pkg, "LookupPort", luar.New(L, net.LookupPort))
+	L.SetField(pkg, "LookupSRV", luar.New(L, net.LookupSRV))
+	L.SetField(pkg, "LookupTXT", luar.New(L, net.LookupTXT))
+	L.SetField(pkg, "ParseCIDR", luar.New(L, net.ParseCIDR))
+	L.SetField(pkg, "ParseIP", luar.New(L, net.ParseIP))
+	L.SetField(pkg, "ParseMAC", luar.New(L, net.ParseMAC))
+	L.SetField(pkg, "Pipe", luar.New(L, net.Pipe))
+	L.SetField(pkg, "ResolveIPAddr", luar.New(L, net.ResolveIPAddr))
+	L.SetField(pkg, "ResolveTCPAddr", luar.New(L, net.ResolveTCPAddr))
+	L.SetField(pkg, "ResolveUDPAddr", luar.New(L, net.ResolveUDPAddr))
+	L.SetField(pkg, "ResolveUnixAddr", luar.New(L, net.ResolveUnixAddr))
+	L.SetField(pkg, "SplitHostPort", luar.New(L, net.SplitHostPort))
+
+	return pkg
+}
+
+func importMath() *lua.LTable {
+	pkg := L.NewTable()
+
+	L.SetField(pkg, "Abs", luar.New(L, math.Abs))
+	L.SetField(pkg, "Acos", luar.New(L, math.Acos))
+	L.SetField(pkg, "Acosh", luar.New(L, math.Acosh))
+	L.SetField(pkg, "Asin", luar.New(L, math.Asin))
+	L.SetField(pkg, "Asinh", luar.New(L, math.Asinh))
+	L.SetField(pkg, "Atan", luar.New(L, math.Atan))
+	L.SetField(pkg, "Atan2", luar.New(L, math.Atan2))
+	L.SetField(pkg, "Atanh", luar.New(L, math.Atanh))
+	L.SetField(pkg, "Cbrt", luar.New(L, math.Cbrt))
+	L.SetField(pkg, "Ceil", luar.New(L, math.Ceil))
+	L.SetField(pkg, "Copysign", luar.New(L, math.Copysign))
+	L.SetField(pkg, "Cos", luar.New(L, math.Cos))
+	L.SetField(pkg, "Cosh", luar.New(L, math.Cosh))
+	L.SetField(pkg, "Dim", luar.New(L, math.Dim))
+	L.SetField(pkg, "Erf", luar.New(L, math.Erf))
+	L.SetField(pkg, "Erfc", luar.New(L, math.Erfc))
+	L.SetField(pkg, "Exp", luar.New(L, math.Exp))
+	L.SetField(pkg, "Exp2", luar.New(L, math.Exp2))
+	L.SetField(pkg, "Expm1", luar.New(L, math.Expm1))
+	L.SetField(pkg, "Float32bits", luar.New(L, math.Float32bits))
+	L.SetField(pkg, "Float32frombits", luar.New(L, math.Float32frombits))
+	L.SetField(pkg, "Float64bits", luar.New(L, math.Float64bits))
+	L.SetField(pkg, "Float64frombits", luar.New(L, math.Float64frombits))
+	L.SetField(pkg, "Floor", luar.New(L, math.Floor))
+	L.SetField(pkg, "Frexp", luar.New(L, math.Frexp))
+	L.SetField(pkg, "Gamma", luar.New(L, math.Gamma))
+	L.SetField(pkg, "Hypot", luar.New(L, math.Hypot))
+	L.SetField(pkg, "Ilogb", luar.New(L, math.Ilogb))
+	L.SetField(pkg, "Inf", luar.New(L, math.Inf))
+	L.SetField(pkg, "IsInf", luar.New(L, math.IsInf))
+	L.SetField(pkg, "IsNaN", luar.New(L, math.IsNaN))
+	L.SetField(pkg, "J0", luar.New(L, math.J0))
+	L.SetField(pkg, "J1", luar.New(L, math.J1))
+	L.SetField(pkg, "Jn", luar.New(L, math.Jn))
+	L.SetField(pkg, "Ldexp", luar.New(L, math.Ldexp))
+	L.SetField(pkg, "Lgamma", luar.New(L, math.Lgamma))
+	L.SetField(pkg, "Log", luar.New(L, math.Log))
+	L.SetField(pkg, "Log10", luar.New(L, math.Log10))
+	L.SetField(pkg, "Log1p", luar.New(L, math.Log1p))
+	L.SetField(pkg, "Log2", luar.New(L, math.Log2))
+	L.SetField(pkg, "Logb", luar.New(L, math.Logb))
+	L.SetField(pkg, "Max", luar.New(L, math.Max))
+	L.SetField(pkg, "Min", luar.New(L, math.Min))
+	L.SetField(pkg, "Mod", luar.New(L, math.Mod))
+	L.SetField(pkg, "Modf", luar.New(L, math.Modf))
+	L.SetField(pkg, "NaN", luar.New(L, math.NaN))
+	L.SetField(pkg, "Nextafter", luar.New(L, math.Nextafter))
+	L.SetField(pkg, "Pow", luar.New(L, math.Pow))
+	L.SetField(pkg, "Pow10", luar.New(L, math.Pow10))
+	L.SetField(pkg, "Remainder", luar.New(L, math.Remainder))
+	L.SetField(pkg, "Signbit", luar.New(L, math.Signbit))
+	L.SetField(pkg, "Sin", luar.New(L, math.Sin))
+	L.SetField(pkg, "Sincos", luar.New(L, math.Sincos))
+	L.SetField(pkg, "Sinh", luar.New(L, math.Sinh))
+	L.SetField(pkg, "Sqrt", luar.New(L, math.Sqrt))
+	L.SetField(pkg, "Tan", luar.New(L, math.Tan))
+	L.SetField(pkg, "Tanh", luar.New(L, math.Tanh))
+	L.SetField(pkg, "Trunc", luar.New(L, math.Trunc))
+	L.SetField(pkg, "Y0", luar.New(L, math.Y0))
+	L.SetField(pkg, "Y1", luar.New(L, math.Y1))
+	L.SetField(pkg, "Yn", luar.New(L, math.Yn))
+
+	return pkg
+}
+
+func importMathRand() *lua.LTable {
+	pkg := L.NewTable()
+
+	L.SetField(pkg, "ExpFloat64", luar.New(L, rand.ExpFloat64))
+	L.SetField(pkg, "Float32", luar.New(L, rand.Float32))
+	L.SetField(pkg, "Float64", luar.New(L, rand.Float64))
+	L.SetField(pkg, "Int", luar.New(L, rand.Int))
+	L.SetField(pkg, "Int31", luar.New(L, rand.Int31))
+	L.SetField(pkg, "Int31n", luar.New(L, rand.Int31n))
+	L.SetField(pkg, "Int63", luar.New(L, rand.Int63))
+	L.SetField(pkg, "Int63n", luar.New(L, rand.Int63n))
+	L.SetField(pkg, "Intn", luar.New(L, rand.Intn))
+	L.SetField(pkg, "NormFloat64", luar.New(L, rand.NormFloat64))
+	L.SetField(pkg, "Perm", luar.New(L, rand.Perm))
+	L.SetField(pkg, "Seed", luar.New(L, rand.Seed))
+	L.SetField(pkg, "Uint32", luar.New(L, rand.Uint32))
+
+	return pkg
+}
+
+func importOs() *lua.LTable {
+	pkg := L.NewTable()
+
+	L.SetField(pkg, "Args", luar.New(L, os.Args))
+	L.SetField(pkg, "Chdir", luar.New(L, os.Chdir))
+	L.SetField(pkg, "Chmod", luar.New(L, os.Chmod))
+	L.SetField(pkg, "Chown", luar.New(L, os.Chown))
+	L.SetField(pkg, "Chtimes", luar.New(L, os.Chtimes))
+	L.SetField(pkg, "Clearenv", luar.New(L, os.Clearenv))
+	L.SetField(pkg, "Create", luar.New(L, os.Create))
+	L.SetField(pkg, "DevNull", luar.New(L, os.DevNull))
+	L.SetField(pkg, "Environ", luar.New(L, os.Environ))
+	L.SetField(pkg, "ErrExist", luar.New(L, os.ErrExist))
+	L.SetField(pkg, "ErrInvalid", luar.New(L, os.ErrInvalid))
+	L.SetField(pkg, "ErrNotExist", luar.New(L, os.ErrNotExist))
+	L.SetField(pkg, "ErrPermission", luar.New(L, os.ErrPermission))
+	L.SetField(pkg, "Exit", luar.New(L, os.Exit))
+	L.SetField(pkg, "Expand", luar.New(L, os.Expand))
+	L.SetField(pkg, "ExpandEnv", luar.New(L, os.ExpandEnv))
+	L.SetField(pkg, "FindProcess", luar.New(L, os.FindProcess))
+	L.SetField(pkg, "Getegid", luar.New(L, os.Getegid))
+	L.SetField(pkg, "Getenv", luar.New(L, os.Getenv))
+	L.SetField(pkg, "Geteuid", luar.New(L, os.Geteuid))
+	L.SetField(pkg, "Getgid", luar.New(L, os.Getgid))
+	L.SetField(pkg, "Getgroups", luar.New(L, os.Getgroups))
+	L.SetField(pkg, "Getpagesize", luar.New(L, os.Getpagesize))
+	L.SetField(pkg, "Getpid", luar.New(L, os.Getpid))
+	L.SetField(pkg, "Getuid", luar.New(L, os.Getuid))
+	L.SetField(pkg, "Getwd", luar.New(L, os.Getwd))
+	L.SetField(pkg, "Hostname", luar.New(L, os.Hostname))
+	L.SetField(pkg, "Interrupt", luar.New(L, os.Interrupt))
+	L.SetField(pkg, "IsExist", luar.New(L, os.IsExist))
+	L.SetField(pkg, "IsNotExist", luar.New(L, os.IsNotExist))
+	L.SetField(pkg, "IsPathSeparator", luar.New(L, os.IsPathSeparator))
+	L.SetField(pkg, "IsPermission", luar.New(L, os.IsPermission))
+	L.SetField(pkg, "Kill", luar.New(L, os.Kill))
+	L.SetField(pkg, "Lchown", luar.New(L, os.Lchown))
+	L.SetField(pkg, "Link", luar.New(L, os.Link))
+	L.SetField(pkg, "Lstat", luar.New(L, os.Lstat))
+	L.SetField(pkg, "Mkdir", luar.New(L, os.Mkdir))
+	L.SetField(pkg, "MkdirAll", luar.New(L, os.MkdirAll))
+	L.SetField(pkg, "ModeAppend", luar.New(L, os.ModeAppend))
+	L.SetField(pkg, "ModeCharDevice", luar.New(L, os.ModeCharDevice))
+	L.SetField(pkg, "ModeDevice", luar.New(L, os.ModeDevice))
+	L.SetField(pkg, "ModeDir", luar.New(L, os.ModeDir))
+	L.SetField(pkg, "ModeExclusive", luar.New(L, os.ModeExclusive))
+	L.SetField(pkg, "ModeNamedPipe", luar.New(L, os.ModeNamedPipe))
+	L.SetField(pkg, "ModePerm", luar.New(L, os.ModePerm))
+	L.SetField(pkg, "ModeSetgid", luar.New(L, os.ModeSetgid))
+	L.SetField(pkg, "ModeSetuid", luar.New(L, os.ModeSetuid))
+	L.SetField(pkg, "ModeSocket", luar.New(L, os.ModeSocket))
+	L.SetField(pkg, "ModeSticky", luar.New(L, os.ModeSticky))
+	L.SetField(pkg, "ModeSymlink", luar.New(L, os.ModeSymlink))
+	L.SetField(pkg, "ModeTemporary", luar.New(L, os.ModeTemporary))
+	L.SetField(pkg, "ModeType", luar.New(L, os.ModeType))
+	L.SetField(pkg, "NewFile", luar.New(L, os.NewFile))
+	L.SetField(pkg, "NewSyscallError", luar.New(L, os.NewSyscallError))
+	L.SetField(pkg, "O_APPEND", luar.New(L, os.O_APPEND))
+	L.SetField(pkg, "O_CREATE", luar.New(L, os.O_CREATE))
+	L.SetField(pkg, "O_EXCL", luar.New(L, os.O_EXCL))
+	L.SetField(pkg, "O_RDONLY", luar.New(L, os.O_RDONLY))
+	L.SetField(pkg, "O_RDWR", luar.New(L, os.O_RDWR))
+	L.SetField(pkg, "O_SYNC", luar.New(L, os.O_SYNC))
+	L.SetField(pkg, "O_TRUNC", luar.New(L, os.O_TRUNC))
+	L.SetField(pkg, "O_WRONLY", luar.New(L, os.O_WRONLY))
+	L.SetField(pkg, "Open", luar.New(L, os.Open))
+	L.SetField(pkg, "OpenFile", luar.New(L, os.OpenFile))
+	L.SetField(pkg, "PathListSeparator", luar.New(L, os.PathListSeparator))
+	L.SetField(pkg, "PathSeparator", luar.New(L, os.PathSeparator))
+	L.SetField(pkg, "Pipe", luar.New(L, os.Pipe))
+	L.SetField(pkg, "Readlink", luar.New(L, os.Readlink))
+	L.SetField(pkg, "Remove", luar.New(L, os.Remove))
+	L.SetField(pkg, "RemoveAll", luar.New(L, os.RemoveAll))
+	L.SetField(pkg, "Rename", luar.New(L, os.Rename))
+	L.SetField(pkg, "SEEK_CUR", luar.New(L, os.SEEK_CUR))
+	L.SetField(pkg, "SEEK_END", luar.New(L, os.SEEK_END))
+	L.SetField(pkg, "SEEK_SET", luar.New(L, os.SEEK_SET))
+	L.SetField(pkg, "SameFile", luar.New(L, os.SameFile))
+	L.SetField(pkg, "Setenv", luar.New(L, os.Setenv))
+	L.SetField(pkg, "StartProcess", luar.New(L, os.StartProcess))
+	L.SetField(pkg, "Stat", luar.New(L, os.Stat))
+	L.SetField(pkg, "Stderr", luar.New(L, os.Stderr))
+	L.SetField(pkg, "Stdin", luar.New(L, os.Stdin))
+	L.SetField(pkg, "Stdout", luar.New(L, os.Stdout))
+	L.SetField(pkg, "Symlink", luar.New(L, os.Symlink))
+	L.SetField(pkg, "TempDir", luar.New(L, os.TempDir))
+	L.SetField(pkg, "Truncate", luar.New(L, os.Truncate))
+
+	return pkg
+}
+
+func importRuntime() *lua.LTable {
+	pkg := L.NewTable()
+
+	L.SetField(pkg, "GC", luar.New(L, runtime.GC))
+	L.SetField(pkg, "GOARCH", luar.New(L, runtime.GOARCH))
+	L.SetField(pkg, "GOMAXPROCS", luar.New(L, runtime.GOMAXPROCS))
+	L.SetField(pkg, "GOOS", luar.New(L, runtime.GOOS))
+	L.SetField(pkg, "GOROOT", luar.New(L, runtime.GOROOT))
+
+	return pkg
+}
+
+func importPath() *lua.LTable {
+	pkg := L.NewTable()
+
+	L.SetField(pkg, "Base", luar.New(L, path.Base))
+	L.SetField(pkg, "Clean", luar.New(L, path.Clean))
+	L.SetField(pkg, "Dir", luar.New(L, path.Dir))
+	L.SetField(pkg, "ErrBadPattern", luar.New(L, path.ErrBadPattern))
+	L.SetField(pkg, "Ext", luar.New(L, path.Ext))
+	L.SetField(pkg, "IsAbs", luar.New(L, path.IsAbs))
+	L.SetField(pkg, "Join", luar.New(L, path.Join))
+	L.SetField(pkg, "Match", luar.New(L, path.Match))
+	L.SetField(pkg, "Split", luar.New(L, path.Split))
+
+	return pkg
+}
+
+func importFilePath() *lua.LTable {
+	pkg := L.NewTable()
+
+	L.SetField(pkg, "Join", luar.New(L, filepath.Join))
+	L.SetField(pkg, "Abs", luar.New(L, filepath.Abs))
+	L.SetField(pkg, "Base", luar.New(L, filepath.Base))
+	L.SetField(pkg, "Clean", luar.New(L, filepath.Clean))
+	L.SetField(pkg, "Dir", luar.New(L, filepath.Dir))
+	L.SetField(pkg, "EvalSymlinks", luar.New(L, filepath.EvalSymlinks))
+	L.SetField(pkg, "Ext", luar.New(L, filepath.Ext))
+	L.SetField(pkg, "FromSlash", luar.New(L, filepath.FromSlash))
+	L.SetField(pkg, "Glob", luar.New(L, filepath.Glob))
+	L.SetField(pkg, "HasPrefix", luar.New(L, filepath.HasPrefix))
+	L.SetField(pkg, "IsAbs", luar.New(L, filepath.IsAbs))
+	L.SetField(pkg, "Join", luar.New(L, filepath.Join))
+	L.SetField(pkg, "Match", luar.New(L, filepath.Match))
+	L.SetField(pkg, "Rel", luar.New(L, filepath.Rel))
+	L.SetField(pkg, "Split", luar.New(L, filepath.Split))
+	L.SetField(pkg, "SplitList", luar.New(L, filepath.SplitList))
+	L.SetField(pkg, "ToSlash", luar.New(L, filepath.ToSlash))
+	L.SetField(pkg, "VolumeName", luar.New(L, filepath.VolumeName))
+
+	return pkg
+}
+
+func importStrings() *lua.LTable {
+	pkg := L.NewTable()
+
+	L.SetField(pkg, "Contains", luar.New(L, strings.Contains))
+	L.SetField(pkg, "ContainsAny", luar.New(L, strings.ContainsAny))
+	L.SetField(pkg, "ContainsRune", luar.New(L, strings.ContainsRune))
+	L.SetField(pkg, "Count", luar.New(L, strings.Count))
+	L.SetField(pkg, "EqualFold", luar.New(L, strings.EqualFold))
+	L.SetField(pkg, "Fields", luar.New(L, strings.Fields))
+	L.SetField(pkg, "FieldsFunc", luar.New(L, strings.FieldsFunc))
+	L.SetField(pkg, "HasPrefix", luar.New(L, strings.HasPrefix))
+	L.SetField(pkg, "HasSuffix", luar.New(L, strings.HasSuffix))
+	L.SetField(pkg, "Index", luar.New(L, strings.Index))
+	L.SetField(pkg, "IndexAny", luar.New(L, strings.IndexAny))
+	L.SetField(pkg, "IndexByte", luar.New(L, strings.IndexByte))
+	L.SetField(pkg, "IndexFunc", luar.New(L, strings.IndexFunc))
+	L.SetField(pkg, "IndexRune", luar.New(L, strings.IndexRune))
+	L.SetField(pkg, "Join", luar.New(L, strings.Join))
+	L.SetField(pkg, "LastIndex", luar.New(L, strings.LastIndex))
+	L.SetField(pkg, "LastIndexAny", luar.New(L, strings.LastIndexAny))
+	L.SetField(pkg, "LastIndexFunc", luar.New(L, strings.LastIndexFunc))
+	L.SetField(pkg, "Map", luar.New(L, strings.Map))
+	L.SetField(pkg, "NewReader", luar.New(L, strings.NewReader))
+	L.SetField(pkg, "NewReplacer", luar.New(L, strings.NewReplacer))
+	L.SetField(pkg, "Repeat", luar.New(L, strings.Repeat))
+	L.SetField(pkg, "Replace", luar.New(L, strings.Replace))
+	L.SetField(pkg, "Split", luar.New(L, strings.Split))
+	L.SetField(pkg, "SplitAfter", luar.New(L, strings.SplitAfter))
+	L.SetField(pkg, "SplitAfterN", luar.New(L, strings.SplitAfterN))
+	L.SetField(pkg, "SplitN", luar.New(L, strings.SplitN))
+	L.SetField(pkg, "Title", luar.New(L, strings.Title))
+	L.SetField(pkg, "ToLower", luar.New(L, strings.ToLower))
+	L.SetField(pkg, "ToLowerSpecial", luar.New(L, strings.ToLowerSpecial))
+	L.SetField(pkg, "ToTitle", luar.New(L, strings.ToTitle))
+	L.SetField(pkg, "ToTitleSpecial", luar.New(L, strings.ToTitleSpecial))
+	L.SetField(pkg, "ToUpper", luar.New(L, strings.ToUpper))
+	L.SetField(pkg, "ToUpperSpecial", luar.New(L, strings.ToUpperSpecial))
+	L.SetField(pkg, "Trim", luar.New(L, strings.Trim))
+	L.SetField(pkg, "TrimFunc", luar.New(L, strings.TrimFunc))
+	L.SetField(pkg, "TrimLeft", luar.New(L, strings.TrimLeft))
+	L.SetField(pkg, "TrimLeftFunc", luar.New(L, strings.TrimLeftFunc))
+	L.SetField(pkg, "TrimPrefix", luar.New(L, strings.TrimPrefix))
+	L.SetField(pkg, "TrimRight", luar.New(L, strings.TrimRight))
+	L.SetField(pkg, "TrimRightFunc", luar.New(L, strings.TrimRightFunc))
+	L.SetField(pkg, "TrimSpace", luar.New(L, strings.TrimSpace))
+	L.SetField(pkg, "TrimSuffix", luar.New(L, strings.TrimSuffix))
+
+	return pkg
+}
+
+func importRegexp() *lua.LTable {
+	pkg := L.NewTable()
+
+	L.SetField(pkg, "Match", luar.New(L, regexp.Match))
+	L.SetField(pkg, "MatchReader", luar.New(L, regexp.MatchReader))
+	L.SetField(pkg, "MatchString", luar.New(L, regexp.MatchString))
+	L.SetField(pkg, "QuoteMeta", luar.New(L, regexp.QuoteMeta))
+	L.SetField(pkg, "Compile", luar.New(L, regexp.Compile))
+	L.SetField(pkg, "CompilePOSIX", luar.New(L, regexp.CompilePOSIX))
+	L.SetField(pkg, "MustCompile", luar.New(L, regexp.MustCompile))
+	L.SetField(pkg, "MustCompilePOSIX", luar.New(L, regexp.MustCompilePOSIX))
+
+	return pkg
+}
+
+func importErrors() *lua.LTable {
+	pkg := L.NewTable()
+
+	L.SetField(pkg, "New", luar.New(L, errors.New))
+
+	return pkg
+}
+
+func importTime() *lua.LTable {
+	pkg := L.NewTable()
+
+	L.SetField(pkg, "After", luar.New(L, time.After))
+	L.SetField(pkg, "Sleep", luar.New(L, time.Sleep))
+	L.SetField(pkg, "Tick", luar.New(L, time.Tick))
+	L.SetField(pkg, "Since", luar.New(L, time.Since))
+	L.SetField(pkg, "FixedZone", luar.New(L, time.FixedZone))
+	L.SetField(pkg, "LoadLocation", luar.New(L, time.LoadLocation))
+	L.SetField(pkg, "NewTicker", luar.New(L, time.NewTicker))
+	L.SetField(pkg, "Date", luar.New(L, time.Date))
+	L.SetField(pkg, "Now", luar.New(L, time.Now))
+	L.SetField(pkg, "Parse", luar.New(L, time.Parse))
+	L.SetField(pkg, "ParseDuration", luar.New(L, time.ParseDuration))
+	L.SetField(pkg, "ParseInLocation", luar.New(L, time.ParseInLocation))
+	L.SetField(pkg, "Unix", luar.New(L, time.Unix))
+	L.SetField(pkg, "AfterFunc", luar.New(L, time.AfterFunc))
+	L.SetField(pkg, "NewTimer", luar.New(L, time.NewTimer))
+	L.SetField(pkg, "Nanosecond", luar.New(L, time.Nanosecond))
+	L.SetField(pkg, "Microsecond", luar.New(L, time.Microsecond))
+	L.SetField(pkg, "Millisecond", luar.New(L, time.Millisecond))
+	L.SetField(pkg, "Second", luar.New(L, time.Second))
+	L.SetField(pkg, "Minute", luar.New(L, time.Minute))
+	L.SetField(pkg, "Hour", luar.New(L, time.Hour))
+
+	return pkg
+}

cmd/micro/messenger.go

@@ -3,11 +3,14 @@ package main
 import (
 	"bufio"
 	"bytes"
+	"encoding/gob"
 	"fmt"
 	"os"
 	"strconv"
 
+	"github.com/mattn/go-runewidth"
 	"github.com/zyedidia/clipboard"
+	"github.com/zyedidia/micro/cmd/micro/shellwords"
 	"github.com/zyedidia/tcell"
 )
 
@@ -69,9 +72,11 @@ type Messenger struct {
 	gutterMessage bool
 }
 
-func (m *Messenger) AddLog(msg string) {
+// AddLog sends a message to the log view
+func (m *Messenger) AddLog(msg ...interface{}) {
+	logMessage := fmt.Sprint(msg...)
 	buffer := m.getBuffer()
-	buffer.insert(buffer.End(), []byte(msg+"\n"))
+	buffer.insert(buffer.End(), []byte(logMessage+"\n"))
 	buffer.Cursor.Loc = buffer.End()
 	buffer.Cursor.Relocate()
 }
@@ -218,6 +223,7 @@ func (m *Messenger) LetterPrompt(prompt string, responses ...rune) (rune, bool)
 	}
 }
 
+// Completion represents a type of completion
 type Completion int
 
 const (
@@ -228,6 +234,7 @@ const (
 	OptionCompletion
 	PluginCmdCompletion
 	PluginNameCompletion
+	OptionValueCompletion
 )
 
 // Prompt sends the user a message and waits for a response to be typed in
@@ -254,6 +261,11 @@ func (m *Messenger) Prompt(prompt, placeholder, historyType string, completionTy
 		event := <-events
 
 		switch e := event.(type) {
+		case *tcell.EventResize:
+			for _, t := range tabs {
+				t.Resize()
+			}
+			RedrawAll()
 		case *tcell.EventKey:
 			switch e.Key() {
 			case tcell.KeyCtrlQ, tcell.KeyCtrlC, tcell.KeyEscape:
@@ -267,9 +279,16 @@ func (m *Messenger) Prompt(prompt, placeholder, historyType string, completionTy
 				response, canceled = m.response, false
 				m.history[historyType][len(m.history[historyType])-1] = response
 			case tcell.KeyTab:
-				args := SplitCommandArgs(m.response)
-				currentArgNum := len(args) - 1
-				currentArg := args[currentArgNum]
+				args, err := shellwords.Split(m.response)
+				if err != nil {
+					break
+				}
+				currentArg := ""
+				currentArgNum := 0
+				if len(args) > 0 {
+					currentArgNum = len(args) - 1
+					currentArg = args[currentArgNum]
+				}
 				var completionType Completion
 
 				if completionTypes[0] == CommandCompletion && currentArgNum > 0 {
@@ -293,6 +312,10 @@ func (m *Messenger) Prompt(prompt, placeholder, historyType string, completionTy
 					chosen, suggestions = HelpComplete(currentArg)
 				} else if completionType == OptionCompletion {
 					chosen, suggestions = OptionComplete(currentArg)
+				} else if completionType == OptionValueCompletion {
+					if currentArgNum-1 > 0 {
+						chosen, suggestions = OptionValueComplete(args[currentArgNum-1], currentArg)
+					}
 				} else if completionType == PluginCmdCompletion {
 					chosen, suggestions = PluginCmdComplete(currentArg)
 				} else if completionType == PluginNameCompletion {
@@ -305,8 +328,8 @@ func (m *Messenger) Prompt(prompt, placeholder, historyType string, completionTy
 					chosen = chosen + CommonSubstring(suggestions...)
 				}
 
-				if chosen != "" {
-					m.response = JoinCommandArgs(append(args[:len(args)-1], chosen)...)
+				if len(suggestions) != 0 && chosen != "" {
+					m.response = shellwords.Join(append(args[:len(args)-1], chosen)...)
 					m.cursorx = Count(m.response)
 				}
 			}
@@ -315,7 +338,7 @@ func (m *Messenger) Prompt(prompt, placeholder, historyType string, completionTy
 		m.HandleEvent(event, m.history[historyType])
 
 		m.Clear()
-		for _, v := range tabs[curTab].views {
+		for _, v := range tabs[curTab].Views {
 			v.Display()
 		}
 		DisplayTabs()
@@ -331,62 +354,160 @@ func (m *Messenger) Prompt(prompt, placeholder, historyType string, completionTy
 	return response, canceled
 }
 
+// UpHistory fetches the previous item in the history
+func (m *Messenger) UpHistory(history []string) {
+	if m.historyNum > 0 {
+		m.historyNum--
+		m.response = history[m.historyNum]
+		m.cursorx = Count(m.response)
+	}
+}
+
+// DownHistory fetches the next item in the history
+func (m *Messenger) DownHistory(history []string) {
+	if m.historyNum < len(history)-1 {
+		m.historyNum++
+		m.response = history[m.historyNum]
+		m.cursorx = Count(m.response)
+	}
+}
+
+// CursorLeft moves the cursor one character left
+func (m *Messenger) CursorLeft() {
+	if m.cursorx > 0 {
+		m.cursorx--
+	}
+}
+
+// CursorRight moves the cursor one character right
+func (m *Messenger) CursorRight() {
+	if m.cursorx < Count(m.response) {
+		m.cursorx++
+	}
+}
+
+// Start moves the cursor to the start of the line
+func (m *Messenger) Start() {
+	m.cursorx = 0
+}
+
+// End moves the cursor to the end of the line
+func (m *Messenger) End() {
+	m.cursorx = Count(m.response)
+}
+
+// Backspace deletes one character
+func (m *Messenger) Backspace() {
+	if m.cursorx > 0 {
+		m.response = string([]rune(m.response)[:m.cursorx-1]) + string([]rune(m.response)[m.cursorx:])
+		m.cursorx--
+	}
+}
+
+// Paste pastes the clipboard
+func (m *Messenger) Paste() {
+	clip, _ := clipboard.ReadAll("clipboard")
+	m.response = Insert(m.response, m.cursorx, clip)
+	m.cursorx += Count(clip)
+}
+
+// WordLeft moves the cursor one word to the left
+func (m *Messenger) WordLeft() {
+	response := []rune(m.response)
+	m.CursorLeft()
+	if m.cursorx <= 0 {
+		return
+	}
+	for IsWhitespace(response[m.cursorx]) {
+		if m.cursorx <= 0 {
+			return
+		}
+		m.CursorLeft()
+	}
+	m.CursorLeft()
+	for IsWordChar(string(response[m.cursorx])) {
+		if m.cursorx <= 0 {
+			return
+		}
+		m.CursorLeft()
+	}
+	m.CursorRight()
+}
+
+// WordRight moves the cursor one word to the right
+func (m *Messenger) WordRight() {
+	response := []rune(m.response)
+	if m.cursorx >= len(response) {
+		return
+	}
+	for IsWhitespace(response[m.cursorx]) {
+		m.CursorRight()
+		if m.cursorx >= len(response) {
+			m.CursorRight()
+			return
+		}
+	}
+	m.CursorRight()
+	if m.cursorx >= len(response) {
+		return
+	}
+	for IsWordChar(string(response[m.cursorx])) {
+		m.CursorRight()
+		if m.cursorx >= len(response) {
+			return
+		}
+	}
+}
+
+// DeleteWordLeft deletes one word to the left
+func (m *Messenger) DeleteWordLeft() {
+	m.WordLeft()
+	m.response = string([]rune(m.response)[:m.cursorx])
+}
+
 // HandleEvent handles an event for the prompter
 func (m *Messenger) HandleEvent(event tcell.Event, history []string) {
 	switch e := event.(type) {
 	case *tcell.EventKey:
-		if e.Key() != tcell.KeyRune || e.Modifiers() != 0 {
-			for key, actions := range bindings {
-				if e.Key() == key.keyCode {
-					if e.Key() == tcell.KeyRune {
-						if e.Rune() != key.r {
-							continue
-						}
-					}
-					if e.Modifiers() == key.modifiers {
-						for _, action := range actions {
-							funcName := FuncName(action)
-							switch funcName {
-							case "main.(*View).CursorUp":
-								if m.historyNum > 0 {
-									m.historyNum--
-									m.response = history[m.historyNum]
-									m.cursorx = Count(m.response)
-								}
-							case "main.(*View).CursorDown":
-								if m.historyNum < len(history)-1 {
-									m.historyNum++
-									m.response = history[m.historyNum]
-									m.cursorx = Count(m.response)
-								}
-							case "main.(*View).CursorLeft":
-								if m.cursorx > 0 {
-									m.cursorx--
-								}
-							case "main.(*View).CursorRight":
-								if m.cursorx < Count(m.response) {
-									m.cursorx++
-								}
-							case "main.(*View).CursorStart", "main.(*View).StartOfLine":
-								m.cursorx = 0
-							case "main.(*View).CursorEnd", "main.(*View).EndOfLine":
-								m.cursorx = Count(m.response)
-							case "main.(*View).Backspace":
-								if m.cursorx > 0 {
-									m.response = string([]rune(m.response)[:m.cursorx-1]) + string([]rune(m.response)[m.cursorx:])
-									m.cursorx--
-								}
-							case "main.(*View).Paste":
-								clip, _ := clipboard.ReadAll("clipboard")
-								m.response = Insert(m.response, m.cursorx, clip)
-								m.cursorx += Count(clip)
-							}
-						}
-					}
-				}
-			}
-		}
 		switch e.Key() {
+		case tcell.KeyCtrlA:
+			m.Start()
+		case tcell.KeyCtrlE:
+			m.End()
+		case tcell.KeyUp:
+			m.UpHistory(history)
+		case tcell.KeyDown:
+			m.DownHistory(history)
+		case tcell.KeyLeft:
+			if e.Modifiers() == tcell.ModCtrl {
+				m.Start()
+			} else if e.Modifiers() == tcell.ModAlt || e.Modifiers() == tcell.ModMeta {
+				m.WordLeft()
+			} else {
+				m.CursorLeft()
+			}
+		case tcell.KeyRight:
+			if e.Modifiers() == tcell.ModCtrl {
+				m.End()
+			} else if e.Modifiers() == tcell.ModAlt || e.Modifiers() == tcell.ModMeta {
+				m.WordRight()
+			} else {
+				m.CursorRight()
+			}
+		case tcell.KeyBackspace2, tcell.KeyBackspace:
+			if e.Modifiers() == tcell.ModCtrl || e.Modifiers() == tcell.ModAlt || e.Modifiers() == tcell.ModMeta {
+				m.DeleteWordLeft()
+			} else {
+				m.Backspace()
+			}
+		case tcell.KeyCtrlW:
+			m.DeleteWordLeft()
+		case tcell.KeyCtrlV:
+			m.Paste()
+		case tcell.KeyCtrlF:
+			m.WordRight()
+		case tcell.KeyCtrlB:
+			m.WordLeft()
 		case tcell.KeyRune:
 			m.response = Insert(m.response, m.cursorx, string(e.Rune()))
 			m.cursorx++
@@ -463,8 +584,10 @@ func (m *Messenger) Display() {
 	if m.hasMessage {
 		if m.hasPrompt || globalSettings["infobar"].(bool) {
 			runes := []rune(m.message + m.response)
+			posx := 0
 			for x := 0; x < len(runes); x++ {
-				screen.SetContent(x, h-1, runes[x], nil, m.style)
+				screen.SetContent(posx, h-1, runes[x], nil, m.style)
+				posx += runewidth.RuneWidth(runes[x])
 			}
 		}
 	}
@@ -475,6 +598,59 @@ func (m *Messenger) Display() {
 	}
 }
 
+// LoadHistory attempts to load user history from configDir/buffers/history
+// into the history map
+// The savehistory option must be on
+func (m *Messenger) LoadHistory() {
+	if GetGlobalOption("savehistory").(bool) {
+		file, err := os.Open(configDir + "/buffers/history")
+		defer file.Close()
+		var decodedMap map[string][]string
+		if err == nil {
+			decoder := gob.NewDecoder(file)
+			err = decoder.Decode(&decodedMap)
+
+			if err != nil {
+				m.Error("Error loading history:", err)
+				return
+			}
+		}
+
+		if decodedMap != nil {
+			m.history = decodedMap
+		} else {
+			m.history = make(map[string][]string)
+		}
+	} else {
+		m.history = make(map[string][]string)
+	}
+}
+
+// SaveHistory saves the user's command history to configDir/buffers/history
+// only if the savehistory option is on
+func (m *Messenger) SaveHistory() {
+	if GetGlobalOption("savehistory").(bool) {
+		// Don't save history past 100
+		for k, v := range m.history {
+			if len(v) > 100 {
+				m.history[k] = v[len(m.history[k])-100:]
+			}
+		}
+
+		file, err := os.Create(configDir + "/buffers/history")
+		defer file.Close()
+		if err == nil {
+			encoder := gob.NewEncoder(file)
+
+			err = encoder.Encode(m.history)
+			if err != nil {
+				m.Error("Error saving history:", err)
+				return
+			}
+		}
+	}
+}
+
 // A GutterMessage is a message displayed on the side of the editor
 type GutterMessage struct {
 	lineNum int

cmd/micro/micro.go

@@ -15,14 +15,13 @@ import (
 	"github.com/mitchellh/go-homedir"
 	"github.com/yuin/gopher-lua"
 	"github.com/zyedidia/clipboard"
+	"github.com/zyedidia/micro/cmd/micro/terminfo"
 	"github.com/zyedidia/tcell"
 	"github.com/zyedidia/tcell/encoding"
 	"layeh.com/gopher-luar"
 )
 
 const (
-	synLinesUp           = 75  // How many lines up to look to do syntax highlighting
-	synLinesDown         = 75  // How many lines down to look to do syntax highlighting
 	doubleClickThreshold = 400 // How many milliseconds to wait before a second click is not a double click
 	undoThreshold        = 500 // If two events are less than n milliseconds apart, undo both of them
 	autosaveTime         = 8   // Number of seconds to wait before autosaving
@@ -46,14 +45,12 @@ var (
 
 	// Version is the version number or commit hash
 	// These variables should be set by the linker when compiling
-	Version     = "0.0.0-unknown"
-	CommitHash  = "Unknown"
+	Version = "0.0.0-unknown"
+	// CommitHash is the commit this version was built on
+	CommitHash = "Unknown"
+	// CompileDate is the date this binary was compiled on
 	CompileDate = "Unknown"
 
-	// L is the lua state
-	// This is the VM that runs the plugins
-	L *lua.LState
-
 	// The list of views
 	tabs []*Tab
 	// This is the currently open tab
@@ -62,9 +59,17 @@ var (
 
 	// Channel of jobs running in the background
 	jobs chan JobFunction
+
 	// Event channel
 	events   chan tcell.Event
 	autosave chan bool
+
+	// Channels for the terminal emulator
+	updateterm chan bool
+	closeterm  chan int
+
+	// How many redraws have happened
+	numRedraw uint
 )
 
 // LoadInput determines which files should be loaded into buffers
@@ -91,30 +96,23 @@ func LoadInput() []*Buffer {
 		// Option 1
 		// We go through each file and load it
 		for i := 0; i < len(args); i++ {
-			filename = args[i]
+			if strings.HasPrefix(args[i], "+") {
+				if strings.Contains(args[i], ":") {
+					split := strings.Split(args[i], ":")
+					*flagStartPos = split[0][1:] + "," + split[1]
+				} else {
+					*flagStartPos = args[i][1:] + ",0"
+				}
+				continue
+			}
 
-			// Check that the file exists
-			var input *os.File
-			if _, e := os.Stat(filename); e == nil {
-				// If it exists we load it into a buffer
-				input, err = os.Open(filename)
-				stat, _ := input.Stat()
-				defer input.Close()
-				if err != nil {
-					TermMessage(err)
-					continue
-				}
-				if stat.IsDir() {
-					TermMessage("Cannot read", filename, "because it is a directory")
-					continue
-				}
+			buf, err := NewBufferFromFile(args[i])
+			if err != nil {
+				TermMessage(err)
+				continue
 			}
 			// If the file didn't exist, input will be empty, and we'll open an empty buffer
-			if input != nil {
-				buffers = append(buffers, NewBuffer(input, FSize(input), filename))
-			} else {
-				buffers = append(buffers, NewBufferFromString("", filename))
-			}
+			buffers = append(buffers, buf)
 		}
 	} else if !isatty.IsTerminal(os.Stdin.Fd()) {
 		// Option 2
@@ -149,6 +147,15 @@ func InitConfigDir() {
 	}
 	configDir = xdgHome + "/micro"
 
+	if len(*flagConfigDir) > 0 {
+		if _, err := os.Stat(*flagConfigDir); os.IsNotExist(err) {
+			TermMessage("Error: " + *flagConfigDir + " does not exist. Defaulting to " + configDir + ".")
+		} else {
+			configDir = *flagConfigDir
+			return
+		}
+	}
+
 	if _, err := os.Stat(xdgHome); os.IsNotExist(err) {
 		// If the xdgHome doesn't exist we should create it
 		err = os.Mkdir(xdgHome, os.ModePerm)
@@ -169,7 +176,20 @@ func InitConfigDir() {
 // InitScreen creates and initializes the tcell screen
 func InitScreen() {
 	// Should we enable true color?
-	truecolor := os.Getenv("MICRO_TRUECOLOR") == "1"
+	truecolor := false
+	colorterm := os.Getenv("COLORTERM")
+	if colorterm == "24bit" || colorterm == "truecolor" {
+		truecolor = true
+	}
+	microtc := os.Getenv("MICRO_TRUECOLOR")
+	if microtc == "1" {
+		truecolor = true
+	} else if microtc == "0" {
+		truecolor = false
+	}
+
+	tcelldb := os.Getenv("TCELLDB")
+	os.Setenv("TCELLDB", configDir+"/.tcelldb")
 
 	// In order to enable true color, we have to set the TERM to `xterm-truecolor` when
 	// initializing tcell, but after that, we can set the TERM back to whatever it was
@@ -182,12 +202,19 @@ func InitScreen() {
 	var err error
 	screen, err = tcell.NewScreen()
 	if err != nil {
-		fmt.Println(err)
 		if err == tcell.ErrTermNotFound {
-			fmt.Println("Micro does not recognize your terminal:", oldTerm)
-			fmt.Println("Please go to https://github.com/zyedidia/mkinfo to read about how to fix this problem (it should be easy to fix).")
+			terminfo.WriteDB(configDir + "/.tcelldb")
+			screen, err = tcell.NewScreen()
+			if err != nil {
+				fmt.Println(err)
+				fmt.Println("Fatal: Micro could not initialize a screen.")
+				os.Exit(1)
+			}
+		} else {
+			fmt.Println(err)
+			fmt.Println("Fatal: Micro could not initialize a screen.")
+			os.Exit(1)
 		}
-		os.Exit(1)
 	}
 	if err = screen.Init(); err != nil {
 		fmt.Println(err)
@@ -199,8 +226,13 @@ func InitScreen() {
 		os.Setenv("TERM", oldTerm)
 	}
 
-	screen.SetStyle(defStyle)
-	screen.EnableMouse()
+	if GetGlobalOption("mouse").(bool) {
+		screen.EnableMouse()
+	}
+
+	os.Setenv("TCELLDB", tcelldb)
+
+	// screen.SetStyle(defStyle)
 }
 
 // RedrawAll redraws everything -- all the views and the messenger
@@ -214,12 +246,20 @@ func RedrawAll() {
 		}
 	}
 
-	for _, v := range tabs[curTab].views {
+	for _, v := range tabs[curTab].Views {
 		v.Display()
 	}
 	DisplayTabs()
 	messenger.Display()
+	if globalSettings["keymenu"].(bool) {
+		DisplayKeyMenu()
+	}
 	screen.Show()
+
+	if numRedraw%50 == 0 {
+		runtime.GC()
+	}
+	numRedraw++
 }
 
 func LoadAll() {
@@ -238,21 +278,37 @@ func LoadAll() {
 	InitColorscheme()
 
 	for _, tab := range tabs {
-		for _, v := range tab.views {
+		for _, v := range tab.Views {
 			v.Buf.UpdateRules()
 		}
 	}
 }
 
-// Passing -version as a flag will have micro print out the version number
+// Command line flags
 var flagVersion = flag.Bool("version", false, "Show the version number and information")
 var flagStartPos = flag.String("startpos", "", "LINE,COL to start the cursor at when opening a buffer.")
+var flagConfigDir = flag.String("config-dir", "", "Specify a custom location for the configuration directory")
+var flagOptions = flag.Bool("options", false, "Show all option help")
 
 func main() {
 	flag.Usage = func() {
 		fmt.Println("Usage: micro [OPTIONS] [FILE]...")
-		fmt.Print("Micro's options can be set via command line arguments for quick adjustments. For real configuration, please use the bindings.json file (see 'help options').\n\n")
-		flag.PrintDefaults()
+		fmt.Println("-config-dir dir")
+		fmt.Println("    \tSpecify a custom location for the configuration directory")
+		fmt.Println("-startpos LINE,COL")
+		fmt.Println("+LINE:COL")
+		fmt.Println("    \tSpecify a line and column to start the cursor at when opening a buffer")
+		fmt.Println("    \tThis can also be done by opening file:LINE:COL")
+		fmt.Println("-options")
+		fmt.Println("    \tShow all option help")
+		fmt.Println("-version")
+		fmt.Println("    \tShow the version number and information")
+
+		fmt.Print("\nMicro's options can also be set via command line arguments for quick\nadjustments. For real configuration, please use the settings.json\nfile (see 'help options').\n\n")
+		fmt.Println("-option value")
+		fmt.Println("    \tSet `option` to `value` for this session")
+		fmt.Println("    \tFor example: `micro -syntax off file.c`")
+		fmt.Println("\nUse `micro -options` to see the full list of configuration options")
 	}
 
 	optionFlags := make(map[string]*string)
@@ -271,6 +327,15 @@ func main() {
 		os.Exit(0)
 	}
 
+	if *flagOptions {
+		// If -options was passed
+		for k, v := range DefaultGlobalSettings() {
+			fmt.Printf("-%s value\n", k)
+			fmt.Printf("    \tThe %s option. Default value: '%v'\n", k, v)
+		}
+		os.Exit(0)
+	}
+
 	// Start the Lua VM for running plugins
 	L = lua.NewState()
 	defer L.Close()
@@ -310,7 +375,7 @@ func main() {
 	// Create a new messenger
 	// This is used for sending the user messages in the bottom of the editor
 	messenger = new(Messenger)
-	messenger.history = make(map[string][]string)
+	messenger.LoadHistory()
 
 	// Now we load the input
 	buffers := LoadInput()
@@ -325,7 +390,7 @@ func main() {
 		tab.SetNum(len(tabs))
 		tabs = append(tabs, tab)
 		for _, t := range tabs {
-			for _, v := range t.views {
+			for _, v := range t.Views {
 				v.Center(false)
 			}
 
@@ -355,15 +420,23 @@ func main() {
 	L.SetGlobal("IsWordChar", luar.New(L, IsWordChar))
 	L.SetGlobal("HandleCommand", luar.New(L, HandleCommand))
 	L.SetGlobal("HandleShellCommand", luar.New(L, HandleShellCommand))
+	L.SetGlobal("ExecCommand", luar.New(L, ExecCommand))
+	L.SetGlobal("RunShellCommand", luar.New(L, RunShellCommand))
+	L.SetGlobal("RunBackgroundShell", luar.New(L, RunBackgroundShell))
+	L.SetGlobal("RunInteractiveShell", luar.New(L, RunInteractiveShell))
+	L.SetGlobal("TermEmuSupported", luar.New(L, TermEmuSupported))
+	L.SetGlobal("RunTermEmulator", luar.New(L, RunTermEmulator))
 	L.SetGlobal("GetLeadingWhitespace", luar.New(L, GetLeadingWhitespace))
 	L.SetGlobal("MakeCompletion", luar.New(L, MakeCompletion))
 	L.SetGlobal("NewBuffer", luar.New(L, NewBufferFromString))
+	L.SetGlobal("NewBufferFromFile", luar.New(L, NewBufferFromFile))
 	L.SetGlobal("RuneStr", luar.New(L, func(r rune) string {
 		return string(r)
 	}))
 	L.SetGlobal("Loc", luar.New(L, func(x, y int) Loc {
 		return Loc{x, y}
 	}))
+	L.SetGlobal("WorkingDirectory", luar.New(L, os.Getwd))
 	L.SetGlobal("JoinPaths", luar.New(L, filepath.Join))
 	L.SetGlobal("DirectoryName", luar.New(L, filepath.Dir))
 	L.SetGlobal("configDir", luar.New(L, configDir))
@@ -384,30 +457,33 @@ func main() {
 	L.SetGlobal("AddRuntimeFilesFromDirectory", luar.New(L, PluginAddRuntimeFilesFromDirectory))
 	L.SetGlobal("AddRuntimeFileFromMemory", luar.New(L, PluginAddRuntimeFileFromMemory))
 
+	// Access to Go stdlib
+	L.SetGlobal("import", luar.New(L, Import))
+
 	jobs = make(chan JobFunction, 100)
 	events = make(chan tcell.Event, 100)
 	autosave = make(chan bool)
+	updateterm = make(chan bool)
+	closeterm = make(chan int)
 
 	LoadPlugins()
 
 	for _, t := range tabs {
-		for _, v := range t.views {
-			for pl := range loadedPlugins {
-				_, err := Call(pl+".onViewOpen", v)
-				if err != nil && !strings.HasPrefix(err.Error(), "function does not exist") {
-					TermMessage(err)
-					continue
-				}
-			}
+		for _, v := range t.Views {
+			GlobalPluginCall("onViewOpen", v)
+			GlobalPluginCall("onBufferOpen", v.Buf)
 		}
 	}
 
 	InitColorscheme()
+	messenger.style = defStyle
 
 	// Here is the event loop which runs in a separate thread
 	go func() {
 		for {
-			events <- screen.PollEvent()
+			if screen != nil {
+				events <- screen.PollEvent()
+			}
 		}
 	}()
 
@@ -433,11 +509,19 @@ func main() {
 			f.function(f.output, f.args...)
 			continue
 		case <-autosave:
-			CurView().Save(true)
+			if CurView().Buf.Path != "" {
+				CurView().Save(true)
+			}
+		case <-updateterm:
+			continue
+		case vnum := <-closeterm:
+			tabs[curTab].Views[vnum].CloseTerminal()
 		case event = <-events:
 		}
 
 		for event != nil {
+			didAction := false
+
 			switch e := event.(type) {
 			case *tcell.EventResize:
 				for _, t := range tabs {
@@ -461,30 +545,44 @@ func main() {
 						if CurView().mouseReleased {
 							// We loop through each view in the current tab and make sure the current view
 							// is the one being clicked in
-							for _, v := range tabs[curTab].views {
+							for _, v := range tabs[curTab].Views {
 								if x >= v.x && x < v.x+v.Width && y >= v.y && y < v.y+v.Height {
 									tabs[curTab].CurView = v.Num
 								}
 							}
 						}
+					} else if e.Buttons() == tcell.WheelUp || e.Buttons() == tcell.WheelDown {
+						var view *View
+						x, y := e.Position()
+						for _, v := range tabs[curTab].Views {
+							if x >= v.x && x < v.x+v.Width && y >= v.y && y < v.y+v.Height {
+								view = tabs[curTab].Views[v.Num]
+							}
+						}
+						if view != nil {
+							view.HandleEvent(e)
+							didAction = true
+						}
 					}
 				}
 			}
 
-			// This function checks the mouse event for the possibility of changing the current tab
-			// If the tab was changed it returns true
-			if TabbarHandleMouseEvent(event) {
-				break
-			}
+			if !didAction {
+				// This function checks the mouse event for the possibility of changing the current tab
+				// If the tab was changed it returns true
+				if TabbarHandleMouseEvent(event) {
+					break
+				}
 
-			if searching {
-				// Since searching is done in real time, we need to redraw every time
-				// there is a new event in the search bar so we need a special function
-				// to run instead of the standard HandleEvent.
-				HandleSearchEvent(event, CurView())
-			} else {
-				// Send it to the view
-				CurView().HandleEvent(event)
+				if searching {
+					// Since searching is done in real time, we need to redraw every time
+					// there is a new event in the search bar so we need a special function
+					// to run instead of the standard HandleEvent.
+					HandleSearchEvent(event, CurView())
+				} else {
+					// Send it to the view
+					CurView().HandleEvent(event)
+				}
 			}
 
 			select {

cmd/micro/plugin.go

@@ -7,6 +7,7 @@ import (
 	"strings"
 
 	"github.com/yuin/gopher-lua"
+	"github.com/zyedidia/tcell"
 	"layeh.com/gopher-luar"
 )
 
@@ -60,6 +61,20 @@ func LuaFunctionBinding(function string) func(*View, bool) bool {
 	}
 }
 
+// LuaFunctionMouseBinding is a function generator which takes the name of a lua function
+// and creates a function that will call that lua function
+// Specifically it creates a function that can be called as a mouse binding because this is used
+// to bind mouse actions to lua functions
+func LuaFunctionMouseBinding(function string) func(*View, bool, *tcell.EventMouse) bool {
+	return func(v *View, _ bool, e *tcell.EventMouse) bool {
+		_, err := Call(function, e)
+		if err != nil {
+			TermMessage(err)
+		}
+		return false
+	}
+}
+
 func unpack(old []string) []interface{} {
 	new := make([]interface{}, len(old))
 	for i, v := range old {
@@ -103,10 +118,13 @@ func LuaFunctionComplete(function string) func(string) []string {
 	}
 }
 
+// LuaFunctionJob returns a function that will call the given lua function
+// structured as a job call i.e. the job output and arguments are provided
+// to the lua function
 func LuaFunctionJob(function string) func(string, ...string) {
 	return func(output string, args ...string) {
 		_, err := Call(function, unpack(append([]string{output}, args...))...)
-		if err != nil {
+		if err != nil && !strings.HasPrefix(err.Error(), "function does not exist") {
 			TermMessage(err)
 		}
 	}
@@ -119,11 +137,9 @@ func luaPluginName(name string) string {
 
 // LoadPlugins loads the pre-installed plugins and the plugins located in ~/.config/micro/plugins
 func LoadPlugins() {
-
 	loadedPlugins = make(map[string]string)
 
 	for _, plugin := range ListRuntimeFiles(RTPlugin) {
-
 		pluginName := plugin.Name()
 		if _, ok := loadedPlugins[pluginName]; ok {
 			continue
@@ -136,9 +152,8 @@ func LoadPlugins() {
 		}
 
 		pluginLuaName := luaPluginName(pluginName)
-		pluginDef := "\nlocal P = {}\n" + pluginLuaName + " = P\nsetmetatable(" + pluginLuaName + ", {__index = _G})\nsetfenv(1, P)\n"
 
-		if err := L.DoString(pluginDef + string(data)); err != nil {
+		if err := LoadFile(pluginLuaName, pluginLuaName, string(data)); err != nil {
 			TermMessage(err)
 			continue
 		}
@@ -148,11 +163,22 @@ func LoadPlugins() {
 	}
 
 	if _, err := os.Stat(configDir + "/init.lua"); err == nil {
-		pluginDef := "\nlocal P = {}\n" + "init" + " = P\nsetmetatable(" + "init" + ", {__index = _G})\nsetfenv(1, P)\n"
 		data, _ := ioutil.ReadFile(configDir + "/init.lua")
-		if err := L.DoString(pluginDef + string(data)); err != nil {
+		if err := LoadFile("init", configDir+"init.lua", string(data)); err != nil {
 			TermMessage(err)
 		}
 		loadedPlugins["init"] = "init"
 	}
 }
+
+// GlobalCall makes a call to a function in every plugin that is currently
+// loaded
+func GlobalPluginCall(function string, args ...interface{}) {
+	for pl := range loadedPlugins {
+		_, err := Call(pl+"."+function, args...)
+		if err != nil && !strings.HasPrefix(err.Error(), "function does not exist") {
+			TermMessage(err)
+			continue
+		}
+	}
+}

cmd/micro/pluginmanager.go

@@ -14,8 +14,8 @@ import (
 	"sync"
 
 	"github.com/blang/semver"
+	"github.com/flynn/json5"
 	"github.com/yuin/gopher-lua"
-	"github.com/zyedidia/json5/encoding/json5"
 )
 
 var (
@@ -422,6 +422,7 @@ func (pv *PluginVersion) DownloadAndInstall() error {
 		}
 	}
 
+	// Install files and directory's
 	for _, f := range z.File {
 		parts := strings.Split(f.Name, "/")
 		if allPrefixed {
@@ -434,6 +435,12 @@ func (pv *PluginVersion) DownloadAndInstall() error {
 				return err
 			}
 		} else {
+			basepath := filepath.Dir(targetName)
+
+			if err := os.MkdirAll(basepath, dirPerm); err != nil {
+				return err
+			}
+
 			content, err := f.Open()
 			if err != nil {
 				return err
@@ -534,7 +541,7 @@ func (pv PluginVersions) install() {
 			shouldInstall := true
 			if pv := currentlyInstalled.find(sel.pack.Name); pv != nil {
 				if pv.Version.NE(sel.Version) {
-					messenger.AddLog(fmt.Sprint("Uninstalling %q", sel.pack.Name))
+					messenger.AddLog("Uninstalling", sel.pack.Name)
 					UninstallPlugin(sel.pack.Name)
 				} else {
 					shouldInstall = false

cmd/micro/pluginmanager_test.go

@@ -1,10 +1,11 @@
 package main
 
 import (
-	"github.com/blang/semver"
 	"testing"
 
-	"github.com/zyedidia/json5/encoding/json5"
+	"github.com/blang/semver"
+
+	"github.com/flynn/json5"
 )
 
 func TestDependencyResolving(t *testing.T) {
@@ -35,7 +36,7 @@ func TestDependencyResolving(t *testing.T) {
 		if v == nil {
 			t.Errorf("Failed to resolve %s", name)
 		} else if expected.NE(v.Version) {
-			t.Errorf("%s resolved in wrong version got %s", name, v)
+			t.Errorf("%s resolved in wrong version %v", name, v)
 		}
 	}
 

cmd/micro/scrollbar.go

@@ -0,0 +1,20 @@
+package main
+
+// ScrollBar represents an optional scrollbar that can be used
+type ScrollBar struct {
+	view *View
+}
+
+// Display shows the scrollbar
+func (sb *ScrollBar) Display() {
+	style := defStyle.Reverse(true)
+	screen.SetContent(sb.view.x+sb.view.Width-1, sb.view.y+sb.pos(), ' ', nil, style)
+}
+
+func (sb *ScrollBar) pos() int {
+	numlines := sb.view.Buf.NumLines
+	h := sb.view.Height
+	filepercent := float32(sb.view.Topline) / float32(numlines)
+
+	return int(filepercent * float32(h))
+}

cmd/micro/search.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"regexp"
+	"strings"
 
 	"github.com/zyedidia/tcell"
 )
@@ -11,7 +12,7 @@ var (
 	lastSearch string
 
 	// Where should we start the search down from (or up from)
-	searchStart int
+	searchStart Loc
 
 	// Is there currently a search in progress
 	searching bool
@@ -43,7 +44,7 @@ func EndSearch() {
 	}
 }
 
-// exit the search mode, reset active search phrase, and clear status bar
+// ExitSearch exits the search mode, reset active search phrase, and clear status bar
 func ExitSearch(v *View) {
 	lastSearch = ""
 	searching = false
@@ -63,7 +64,12 @@ func HandleSearchEvent(event tcell.Event, v *View) {
 			// Exit the search mode
 			ExitSearch(v)
 			return
-		case tcell.KeyCtrlQ, tcell.KeyCtrlC, tcell.KeyEnter:
+		case tcell.KeyEnter:
+			// If the user has pressed Enter, they want this to be the lastSearch
+			lastSearch = messenger.response
+			EndSearch()
+			return
+		case tcell.KeyCtrlQ, tcell.KeyCtrlC:
 			// Done
 			EndSearch()
 			return
@@ -91,6 +97,66 @@ func HandleSearchEvent(event tcell.Event, v *View) {
 	return
 }
 
+func searchDown(r *regexp.Regexp, v *View, start, end Loc) bool {
+	for i := start.Y; i <= end.Y; i++ {
+		var l []byte
+		var charPos int
+		if i == start.Y {
+			runes := []rune(string(v.Buf.lines[i].data))
+			l = []byte(string(runes[start.X:]))
+			charPos = start.X
+
+			if strings.Contains(r.String(), "^") && start.X != 0 {
+				continue
+			}
+		} else {
+			l = v.Buf.lines[i].data
+		}
+
+		match := r.FindIndex(l)
+
+		if match != nil {
+			v.Cursor.SetSelectionStart(Loc{charPos + runePos(match[0], string(l)), i})
+			v.Cursor.SetSelectionEnd(Loc{charPos + runePos(match[1], string(l)), i})
+			v.Cursor.OrigSelection[0] = v.Cursor.CurSelection[0]
+			v.Cursor.OrigSelection[1] = v.Cursor.CurSelection[1]
+			v.Cursor.Loc = v.Cursor.CurSelection[1]
+
+			return true
+		}
+	}
+	return false
+}
+
+func searchUp(r *regexp.Regexp, v *View, start, end Loc) bool {
+	for i := start.Y; i >= end.Y; i-- {
+		var l []byte
+		if i == start.Y {
+			runes := []rune(string(v.Buf.lines[i].data))
+			l = []byte(string(runes[:start.X]))
+
+			if strings.Contains(r.String(), "$") && start.X != Count(string(l)) {
+				continue
+			}
+		} else {
+			l = v.Buf.lines[i].data
+		}
+
+		match := r.FindIndex(l)
+
+		if match != nil {
+			v.Cursor.SetSelectionStart(Loc{runePos(match[0], string(l)), i})
+			v.Cursor.SetSelectionEnd(Loc{runePos(match[1], string(l)), i})
+			v.Cursor.OrigSelection[0] = v.Cursor.CurSelection[0]
+			v.Cursor.OrigSelection[1] = v.Cursor.CurSelection[1]
+			v.Cursor.Loc = v.Cursor.CurSelection[1]
+
+			return true
+		}
+	}
+	return false
+}
+
 // Search searches in the view for the given regex. The down bool
 // specifies whether it should search down from the searchStart position
 // or up from there
@@ -98,15 +164,6 @@ func Search(searchStr string, v *View, down bool) {
 	if searchStr == "" {
 		return
 	}
-	var str string
-	var charPos int
-	text := v.Buf.String()
-	if down {
-		str = string([]rune(text)[searchStart:])
-		charPos = searchStart
-	} else {
-		str = string([]rune(text)[:searchStart])
-	}
 	r, err := regexp.Compile(searchStr)
 	if v.Buf.Settings["ignorecase"].(bool) {
 		r, err = regexp.Compile("(?i)" + searchStr)
@@ -114,37 +171,20 @@ func Search(searchStr string, v *View, down bool) {
 	if err != nil {
 		return
 	}
-	matches := r.FindAllStringIndex(str, -1)
-	var match []int
-	if matches == nil {
-		// Search the entire buffer now
-		matches = r.FindAllStringIndex(text, -1)
-		charPos = 0
-		if matches == nil {
-			v.Cursor.ResetSelection()
-			return
-		}
 
-		if !down {
-			match = matches[len(matches)-1]
-		} else {
-			match = matches[0]
+	var found bool
+	if down {
+		found = searchDown(r, v, searchStart, v.Buf.End())
+		if !found {
+			found = searchDown(r, v, v.Buf.Start(), searchStart)
 		}
-		str = text
-	}
-
-	if !down {
-		match = matches[len(matches)-1]
 	} else {
-		match = matches[0]
+		found = searchUp(r, v, searchStart, v.Buf.Start())
+		if !found {
+			found = searchUp(r, v, v.Buf.End(), searchStart)
+		}
 	}
-
-	if match[0] == match[1] {
-		return
+	if !found {
+		v.Cursor.ResetSelection()
 	}
-
-	v.Cursor.SetSelectionStart(FromCharPos(charPos+runePos(match[0], str), v.Buf))
-	v.Cursor.SetSelectionEnd(FromCharPos(charPos+runePos(match[1], str), v.Buf))
-	v.Cursor.Loc = v.Cursor.CurSelection[1]
-	lastSearch = searchStr
 }

cmd/micro/settings.go

@@ -1,6 +1,8 @@
 package main
 
 import (
+	"crypto/md5"
+	"encoding/json"
 	"errors"
 	"io/ioutil"
 	"os"
@@ -8,8 +10,8 @@ import (
 	"strconv"
 	"strings"
 
+	"github.com/flynn/json5"
 	"github.com/zyedidia/glob"
-	"github.com/zyedidia/json5/encoding/json5"
 )
 
 type optionValidator func(string, interface{}) error
@@ -17,6 +19,8 @@ type optionValidator func(string, interface{}) error
 // The options that the user can set
 var globalSettings map[string]interface{}
 
+var invalidSettings bool
+
 // Options with validators
 var optionValidators = map[string]optionValidator{
 	"tabsize":      validatePositiveValue,
@@ -24,10 +28,12 @@ var optionValidators = map[string]optionValidator{
 	"scrollspeed":  validateNonNegativeValue,
 	"colorscheme":  validateColorscheme,
 	"colorcolumn":  validateNonNegativeValue,
+	"fileformat":   validateLineEnding,
 }
 
 // InitGlobalSettings initializes the options map and sets all options to their default values
 func InitGlobalSettings() {
+	invalidSettings = false
 	defaults := DefaultGlobalSettings()
 	var parsed map[string]interface{}
 
@@ -38,12 +44,14 @@ func InitGlobalSettings() {
 		if !strings.HasPrefix(string(input), "null") {
 			if err != nil {
 				TermMessage("Error reading settings.json file: " + err.Error())
+				invalidSettings = true
 				return
 			}
 
 			err = json5.Unmarshal(input, &parsed)
 			if err != nil {
 				TermMessage("Error reading settings.json:", err.Error())
+				invalidSettings = true
 			}
 		} else {
 			writeSettings = true
@@ -71,6 +79,7 @@ func InitGlobalSettings() {
 // InitLocalSettings scans the json in settings.json and sets the options locally based
 // on whether the buffer matches the glob
 func InitLocalSettings(buf *Buffer) {
+	invalidSettings = false
 	var parsed map[string]interface{}
 
 	filename := configDir + "/settings.json"
@@ -78,26 +87,36 @@ func InitLocalSettings(buf *Buffer) {
 		input, err := ioutil.ReadFile(filename)
 		if err != nil {
 			TermMessage("Error reading settings.json file: " + err.Error())
+			invalidSettings = true
 			return
 		}
 
 		err = json5.Unmarshal(input, &parsed)
 		if err != nil {
 			TermMessage("Error reading settings.json:", err.Error())
+			invalidSettings = true
 		}
 	}
 
 	for k, v := range parsed {
 		if strings.HasPrefix(reflect.TypeOf(v).String(), "map") {
-			g, err := glob.Compile(k)
-			if err != nil {
-				TermMessage("Error with glob setting ", k, ": ", err)
-				continue
-			}
+			if strings.HasPrefix(k, "ft:") {
+				if buf.Settings["filetype"].(string) == k[3:] {
+					for k1, v1 := range v.(map[string]interface{}) {
+						buf.Settings[k1] = v1
+					}
+				}
+			} else {
+				g, err := glob.Compile(k)
+				if err != nil {
+					TermMessage("Error with glob setting ", k, ": ", err)
+					continue
+				}
 
-			if g.MatchString(buf.Path) {
-				for k1, v1 := range v.(map[string]interface{}) {
-					buf.Settings[k1] = v1
+				if g.MatchString(buf.Path) {
+					for k1, v1 := range v.(map[string]interface{}) {
+						buf.Settings[k1] = v1
+					}
 				}
 			}
 		}
@@ -106,6 +125,11 @@ func InitLocalSettings(buf *Buffer) {
 
 // WriteSettings writes the settings to the specified filename as JSON
 func WriteSettings(filename string) error {
+	if invalidSettings {
+		// Do not write the settings if there was an error when reading them
+		return nil
+	}
+
 	var err error
 	if _, e := os.Stat(configDir); e == nil {
 		parsed := make(map[string]interface{})
@@ -124,6 +148,7 @@ func WriteSettings(filename string) error {
 				err = json5.Unmarshal(input, &parsed)
 				if err != nil {
 					TermMessage("Error reading settings.json:", err.Error())
+					invalidSettings = true
 				}
 
 				for k, v := range parsed {
@@ -136,7 +161,7 @@ func WriteSettings(filename string) error {
 			}
 		}
 
-		txt, _ := json5.MarshalIndent(parsed, "", "    ")
+		txt, _ := json.MarshalIndent(parsed, "", "    ")
 		err = ioutil.WriteFile(filename, append(txt, '\n'), 0644)
 	}
 	return err
@@ -176,35 +201,44 @@ func GetOption(name string) interface{} {
 func DefaultGlobalSettings() map[string]interface{} {
 	return map[string]interface{}{
 		"autoindent":     true,
-		"keepautoindent": false,
 		"autosave":       false,
+		"basename":       false,
 		"colorcolumn":    float64(0),
 		"colorscheme":    "default",
 		"cursorline":     true,
 		"eofnewline":     false,
-		"rmtrailingws":   false,
+		"fastdirty":      true,
+		"fileformat":     "unix",
+		"hidehelp":       false,
 		"ignorecase":     false,
 		"indentchar":     " ",
 		"infobar":        true,
+		"keepautoindent": false,
+		"keymenu":        false,
+		"matchbrace":     false,
+		"matchbraceleft": false,
+		"mouse":          true,
+		"pluginchannels": []string{"https://raw.githubusercontent.com/micro-editor/plugin-channel/master/channel.json"},
+		"pluginrepos":    []string{},
+		"rmtrailingws":   false,
 		"ruler":          true,
 		"savecursor":     false,
+		"savehistory":    true,
 		"saveundo":       false,
-		"scrollspeed":    float64(2),
+		"scrollbar":      false,
 		"scrollmargin":   float64(3),
+		"scrollspeed":    float64(2),
 		"softwrap":       false,
-		"splitRight":     true,
-		"splitBottom":    true,
+		"splitbottom":    true,
+		"splitright":     true,
 		"statusline":     true,
+		"sucmd":          "sudo",
 		"syntax":         true,
 		"tabmovement":    false,
 		"tabsize":        float64(4),
 		"tabstospaces":   false,
 		"termtitle":      false,
-		"pluginchannels": []string{
-			"https://raw.githubusercontent.com/micro-editor/plugin-channel/master/channel.json",
-		},
-		"pluginrepos": []string{},
-		"useprimary":  true,
+		"useprimary":     true,
 	}
 }
 
@@ -213,23 +247,30 @@ func DefaultGlobalSettings() map[string]interface{} {
 func DefaultLocalSettings() map[string]interface{} {
 	return map[string]interface{}{
 		"autoindent":     true,
-		"keepautoindent": false,
 		"autosave":       false,
+		"basename":       false,
 		"colorcolumn":    float64(0),
 		"cursorline":     true,
 		"eofnewline":     false,
-		"rmtrailingws":   false,
+		"fastdirty":      true,
+		"fileformat":     "unix",
 		"filetype":       "Unknown",
+		"hidehelp":       false,
 		"ignorecase":     false,
 		"indentchar":     " ",
+		"keepautoindent": false,
+		"matchbrace":     false,
+		"matchbraceleft": false,
+		"rmtrailingws":   false,
 		"ruler":          true,
 		"savecursor":     false,
 		"saveundo":       false,
-		"scrollspeed":    float64(2),
+		"scrollbar":      false,
 		"scrollmargin":   float64(3),
+		"scrollspeed":    float64(2),
 		"softwrap":       false,
-		"splitRight":     true,
-		"splitBottom":    true,
+		"splitbottom":    true,
+		"splitright":     true,
 		"statusline":     true,
 		"syntax":         true,
 		"tabmovement":    false,
@@ -283,22 +324,32 @@ func SetOption(option, value string) error {
 		// LoadSyntaxFiles()
 		InitColorscheme()
 		for _, tab := range tabs {
-			for _, view := range tab.views {
+			for _, view := range tab.Views {
 				view.Buf.UpdateRules()
 			}
 		}
 	}
 
-	if option == "infobar" {
+	if option == "infobar" || option == "keymenu" {
 		for _, tab := range tabs {
 			tab.Resize()
 		}
 	}
 
-	if _, ok := CurView().Buf.Settings[option]; ok {
-		for _, tab := range tabs {
-			for _, view := range tab.views {
-				SetLocalOption(option, value, view)
+	if option == "mouse" {
+		if !nativeValue.(bool) {
+			screen.DisableMouse()
+		} else {
+			screen.EnableMouse()
+		}
+	}
+
+	if len(tabs) != 0 {
+		if _, ok := CurView().Buf.Settings[option]; ok {
+			for _, tab := range tabs {
+				for _, view := range tab.Views {
+					SetLocalOption(option, value, view)
+				}
 			}
 		}
 	}
@@ -338,6 +389,26 @@ func SetLocalOption(option, value string, view *View) error {
 		return err
 	}
 
+	if option == "fastdirty" {
+		// If it is being turned off, we have to hash every open buffer
+		var empty [16]byte
+		for _, tab := range tabs {
+			for _, v := range tab.Views {
+				if !nativeValue.(bool) {
+					if v.Buf.origHash == empty {
+						data, err := ioutil.ReadFile(v.Buf.AbsPath)
+						if err != nil {
+							data = []byte{}
+						}
+						v.Buf.origHash = md5.Sum(data)
+					}
+				} else {
+					v.Buf.IsModified = v.Buf.Modified()
+				}
+			}
+		}
+	}
+
 	buf.Settings[option] = nativeValue
 
 	if option == "statusline" {
@@ -350,11 +421,17 @@ func SetLocalOption(option, value string, view *View) error {
 		buf.UpdateRules()
 	}
 
+	if option == "fileformat" {
+		buf.IsModified = true
+	}
+
 	if option == "syntax" {
 		if !nativeValue.(bool) {
 			buf.ClearMatches()
 		} else {
-			buf.highlighter.HighlightStates(buf)
+			if buf.highlighter != nil {
+				buf.highlighter.HighlightStates(buf)
+			}
 		}
 	}
 
@@ -430,3 +507,17 @@ func validateColorscheme(option string, value interface{}) error {
 
 	return nil
 }
+
+func validateLineEnding(option string, value interface{}) error {
+	endingType, ok := value.(string)
+
+	if !ok {
+		return errors.New("Expected string type for file format")
+	}
+
+	if endingType != "unix" && endingType != "dos" {
+		return errors.New("File format must be either 'unix' or 'dos'")
+	}
+
+	return nil
+}

cmd/micro/shell.go

@@ -0,0 +1,129 @@
+package main
+
+import (
+	"bytes"
+	"io"
+	"os"
+	"os/exec"
+	"os/signal"
+	"strings"
+
+	"github.com/zyedidia/micro/cmd/micro/shellwords"
+)
+
+// ExecCommand executes a command using exec
+// It returns any output/errors
+func ExecCommand(name string, arg ...string) (string, error) {
+	var err error
+	cmd := exec.Command(name, arg...)
+	outputBytes := &bytes.Buffer{}
+	cmd.Stdout = outputBytes
+	cmd.Stderr = outputBytes
+	err = cmd.Start()
+	if err != nil {
+		return "", err
+	}
+	err = cmd.Wait() // wait for command to finish
+	outstring := outputBytes.String()
+	return outstring, err
+}
+
+// RunShellCommand executes a shell command and returns the output/error
+func RunShellCommand(input string) (string, error) {
+	args, err := shellwords.Split(input)
+	if err != nil {
+		return "", err
+	}
+	inputCmd := args[0]
+
+	return ExecCommand(inputCmd, args[1:]...)
+}
+
+func RunBackgroundShell(input string) {
+	args, err := shellwords.Split(input)
+	if err != nil {
+		messenger.Error(err)
+		return
+	}
+	inputCmd := args[0]
+	messenger.Message("Running...")
+	go func() {
+		output, err := RunShellCommand(input)
+		totalLines := strings.Split(output, "\n")
+
+		if len(totalLines) < 3 {
+			if err == nil {
+				messenger.Message(inputCmd, " exited without error")
+			} else {
+				messenger.Message(inputCmd, " exited with error: ", err, ": ", output)
+			}
+		} else {
+			messenger.Message(output)
+		}
+		// We have to make sure to redraw
+		RedrawAll()
+	}()
+}
+
+func RunInteractiveShell(input string, wait bool, getOutput bool) (string, error) {
+	args, err := shellwords.Split(input)
+	if err != nil {
+		return "", err
+	}
+	inputCmd := args[0]
+
+	// Shut down the screen because we're going to interact directly with the shell
+	screen.Fini()
+	screen = nil
+
+	args = args[1:]
+
+	// Set up everything for the command
+	outputBytes := &bytes.Buffer{}
+	cmd := exec.Command(inputCmd, args...)
+	cmd.Stdin = os.Stdin
+	if getOutput {
+		cmd.Stdout = io.MultiWriter(os.Stdout, outputBytes)
+	} else {
+		cmd.Stdout = os.Stdout
+	}
+	cmd.Stderr = os.Stderr
+
+	// This is a trap for Ctrl-C so that it doesn't kill micro
+	// Instead we trap Ctrl-C to kill the program we're running
+	c := make(chan os.Signal, 1)
+	signal.Notify(c, os.Interrupt)
+	go func() {
+		for range c {
+			cmd.Process.Kill()
+		}
+	}()
+
+	cmd.Start()
+	err = cmd.Wait()
+
+	output := outputBytes.String()
+
+	if wait {
+		// This is just so we don't return right away and let the user press enter to return
+		TermMessage("")
+	}
+
+	// Start the screen back up
+	InitScreen()
+
+	return output, err
+}
+
+// HandleShellCommand runs the shell command
+// The openTerm argument specifies whether a terminal should be opened (for viewing output
+// or interacting with stdin)
+func HandleShellCommand(input string, openTerm bool, waitToFinish bool) string {
+	if !openTerm {
+		RunBackgroundShell(input)
+		return ""
+	} else {
+		output, _ := RunInteractiveShell(input, waitToFinish, false)
+		return output
+	}
+}

cmd/micro/shell_supported.go

@@ -0,0 +1,18 @@
+// +build linux darwin dragonfly openbsd_amd64 freebsd
+
+package main
+
+import (
+	"github.com/zyedidia/micro/cmd/micro/shellwords"
+)
+
+const TermEmuSupported = true
+
+func RunTermEmulator(input string, wait bool, getOutput bool, callback string) error {
+	args, err := shellwords.Split(input)
+	if err != nil {
+		return err
+	}
+	err = CurView().StartTerminal(args, wait, getOutput, callback)
+	return err
+}

cmd/micro/shell_unsupported.go

@@ -0,0 +1,11 @@
+// +build !linux,!darwin,!freebsd,!dragonfly,!openbsd_amd64
+
+package main
+
+import "errors"
+
+const TermEmuSupported = false
+
+func RunTermEmulator(input string, wait bool, getOutput bool) error {
+	return errors.New("Unsupported operating system")
+}

cmd/micro/shellwords/LICENSE

@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2016 Stepets
+Copyright (c) 2017 Yasuhiro Matsumoto
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

cmd/micro/shellwords/README.md

@@ -0,0 +1,49 @@
+This is a modified version of `go-shellwords` for the micro editor.
+
+# go-shellwords
+
+[![Coverage Status](https://coveralls.io/repos/mattn/go-shellwords/badge.png?branch=master)](https://coveralls.io/r/mattn/go-shellwords?branch=master)
+[![Build Status](https://travis-ci.org/mattn/go-shellwords.svg?branch=master)](https://travis-ci.org/mattn/go-shellwords)
+
+Parse line as shell words.
+
+## Usage
+
+```go
+args, err := shellwords.Parse("./foo --bar=baz")
+// args should be ["./foo", "--bar=baz"]
+```
+
+```go
+os.Setenv("FOO", "bar")
+p := shellwords.NewParser()
+p.ParseEnv = true
+args, err := p.Parse("./foo $FOO")
+// args should be ["./foo", "bar"]
+```
+
+```go
+p := shellwords.NewParser()
+p.ParseBacktick = true
+args, err := p.Parse("./foo `echo $SHELL`")
+// args should be ["./foo", "/bin/bash"]
+```
+
+```go
+shellwords.ParseBacktick = true
+p := shellwords.NewParser()
+args, err := p.Parse("./foo `echo $SHELL`")
+// args should be ["./foo", "/bin/bash"]
+```
+
+# Thanks
+
+This is based on cpan module [Parse::CommandLine](https://metacpan.org/pod/Parse::CommandLine).
+
+# License
+
+under the MIT License: http://mattn.mit-license.org/2017
+
+# Author
+
+Yasuhiro Matsumoto (a.k.a mattn)

cmd/micro/shellwords/shellwords.go

@@ -0,0 +1,180 @@
+package shellwords
+
+import (
+	"bytes"
+	"errors"
+	"os"
+	"regexp"
+)
+
+var envRe = regexp.MustCompile(`\$({[a-zA-Z0-9_]+}|[a-zA-Z0-9_]+)`)
+
+func isSpace(r rune) bool {
+	switch r {
+	case ' ', '\t', '\r', '\n':
+		return true
+	}
+	return false
+}
+
+func replaceEnv(s string) string {
+	return envRe.ReplaceAllStringFunc(s, func(s string) string {
+		s = s[1:]
+		if s[0] == '{' {
+			s = s[1 : len(s)-1]
+		}
+		return os.Getenv(s)
+	})
+}
+
+type Parser struct {
+	Position int
+}
+
+func NewParser() *Parser {
+	return &Parser{0}
+}
+
+func (p *Parser) Parse(line string) ([]string, error) {
+	args := []string{}
+	buf := ""
+	var escaped, doubleQuoted, singleQuoted, backQuote, dollarQuote bool
+	backtick := ""
+
+	pos := -1
+	got := false
+
+loop:
+	for i, r := range line {
+		if escaped {
+			buf += string(r)
+			escaped = false
+			continue
+		}
+
+		if r == '\\' {
+			if singleQuoted {
+				buf += string(r)
+			} else {
+				escaped = true
+			}
+			continue
+		}
+
+		if isSpace(r) {
+			if singleQuoted || doubleQuoted || backQuote || dollarQuote {
+				buf += string(r)
+				backtick += string(r)
+			} else if got {
+				buf = replaceEnv(buf)
+				args = append(args, buf)
+				buf = ""
+				got = false
+			}
+			continue
+		}
+
+		switch r {
+		case '`':
+			if !singleQuoted && !doubleQuoted && !dollarQuote {
+				if backQuote {
+					out, err := shellRun(backtick)
+					if err != nil {
+						return nil, err
+					}
+					buf = out
+				}
+				backtick = ""
+				backQuote = !backQuote
+				continue
+				backtick = ""
+				backQuote = !backQuote
+			}
+		case ')':
+			if !singleQuoted && !doubleQuoted && !backQuote {
+				if dollarQuote {
+					out, err := shellRun(backtick)
+					if err != nil {
+						return nil, err
+					}
+					buf = out
+				}
+				backtick = ""
+				dollarQuote = !dollarQuote
+				continue
+				backtick = ""
+				dollarQuote = !dollarQuote
+			}
+		case '(':
+			if !singleQuoted && !doubleQuoted && !backQuote {
+				if !dollarQuote && len(buf) > 0 && buf == "$" {
+					dollarQuote = true
+					buf += "("
+					continue
+				} else {
+					return nil, errors.New("invalid command line string")
+				}
+			}
+		case '"':
+			if !singleQuoted && !dollarQuote {
+				doubleQuoted = !doubleQuoted
+				continue
+			}
+		case '\'':
+			if !doubleQuoted && !dollarQuote {
+				singleQuoted = !singleQuoted
+				continue
+			}
+		case ';', '&', '|', '<', '>':
+			if !(escaped || singleQuoted || doubleQuoted || backQuote) {
+				pos = i
+				break loop
+			}
+		}
+
+		got = true
+		buf += string(r)
+		if backQuote || dollarQuote {
+			backtick += string(r)
+		}
+	}
+
+	buf = replaceEnv(buf)
+	args = append(args, buf)
+
+	if escaped || singleQuoted || doubleQuoted || backQuote || dollarQuote {
+		return nil, errors.New("invalid command line string")
+	}
+
+	p.Position = pos
+
+	return args, nil
+}
+
+func Split(line string) ([]string, error) {
+	return NewParser().Parse(line)
+}
+
+func Join(args ...string) string {
+	var buf bytes.Buffer
+	for i, w := range args {
+		if i != 0 {
+			buf.WriteByte(' ')
+		}
+		if w == "" {
+			buf.WriteString("''")
+			continue
+		}
+
+		for _, b := range w {
+			switch b {
+			case ' ', '\t', '\r', '\n':
+				buf.WriteByte('\\')
+				buf.WriteString(string(b))
+			default:
+				buf.WriteString(string(b))
+			}
+		}
+	}
+	return buf.String()
+}

cmd/micro/shellwords/shellwords_test.go

@@ -0,0 +1,229 @@
+package shellwords
+
+import (
+	"os"
+	"reflect"
+	"testing"
+)
+
+var testcases = []struct {
+	line     string
+	expected []string
+}{
+	{`var --bar=baz`, []string{`var`, `--bar=baz`}},
+	{`var --bar="baz"`, []string{`var`, `--bar=baz`}},
+	{`var "--bar=baz"`, []string{`var`, `--bar=baz`}},
+	{`var "--bar='baz'"`, []string{`var`, `--bar='baz'`}},
+	{"var --bar=`baz`", []string{`var`, "--bar=`baz`"}},
+	{`var "--bar=\"baz'"`, []string{`var`, `--bar="baz'`}},
+	{`var "--bar=\'baz\'"`, []string{`var`, `--bar='baz'`}},
+	{`var --bar='\'`, []string{`var`, `--bar=\`}},
+	{`var "--bar baz"`, []string{`var`, `--bar baz`}},
+	{`var --"bar baz"`, []string{`var`, `--bar baz`}},
+	{`var  --"bar baz"`, []string{`var`, `--bar baz`}},
+}
+
+func TestSimple(t *testing.T) {
+	for _, testcase := range testcases {
+		args, err := Parse(testcase.line)
+		if err != nil {
+			t.Fatal(err)
+		}
+		if !reflect.DeepEqual(args, testcase.expected) {
+			t.Fatalf("Expected %#v, but %#v:", testcase.expected, args)
+		}
+	}
+}
+
+func TestError(t *testing.T) {
+	_, err := Parse("foo '")
+	if err == nil {
+		t.Fatal("Should be an error")
+	}
+	_, err = Parse(`foo "`)
+	if err == nil {
+		t.Fatal("Should be an error")
+	}
+
+	_, err = Parse("foo `")
+	if err == nil {
+		t.Fatal("Should be an error")
+	}
+}
+
+func TestLastSpace(t *testing.T) {
+	args, err := Parse("foo bar\\  ")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(args) != 2 {
+		t.Fatal("Should have two elements")
+	}
+	if args[0] != "foo" {
+		t.Fatal("1st element should be `foo`")
+	}
+	if args[1] != "bar " {
+		t.Fatal("1st element should be `bar `")
+	}
+}
+
+func TestBacktick(t *testing.T) {
+	goversion, err := shellRun("go version")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	parser := NewParser()
+	parser.ParseBacktick = true
+	args, err := parser.Parse("echo `go version`")
+	if err != nil {
+		t.Fatal(err)
+	}
+	expected := []string{"echo", goversion}
+	if !reflect.DeepEqual(args, expected) {
+		t.Fatalf("Expected %#v, but %#v:", expected, args)
+	}
+
+	args, err = parser.Parse(`echo $(echo foo)`)
+	if err != nil {
+		t.Fatal(err)
+	}
+	expected = []string{"echo", "foo"}
+	if !reflect.DeepEqual(args, expected) {
+		t.Fatalf("Expected %#v, but %#v:", expected, args)
+	}
+
+	parser.ParseBacktick = false
+	args, err = parser.Parse(`echo $(echo "foo")`)
+	expected = []string{"echo", `$(echo "foo")`}
+	if !reflect.DeepEqual(args, expected) {
+		t.Fatalf("Expected %#v, but %#v:", expected, args)
+	}
+	args, err = parser.Parse("echo $(`echo1)")
+	if err != nil {
+		t.Fatal(err)
+	}
+	expected = []string{"echo", "$(`echo1)"}
+	if !reflect.DeepEqual(args, expected) {
+		t.Fatalf("Expected %#v, but %#v:", expected, args)
+	}
+}
+
+func TestBacktickError(t *testing.T) {
+	parser := NewParser()
+	parser.ParseBacktick = true
+	_, err := parser.Parse("echo `go Version`")
+	if err == nil {
+		t.Fatal("Should be an error")
+	}
+	expected := "exit status 2:go: unknown subcommand \"Version\"\nRun 'go help' for usage.\n"
+	if expected != err.Error() {
+		t.Fatalf("Expected %q, but %q", expected, err.Error())
+	}
+	_, err = parser.Parse(`echo $(echo1)`)
+	if err == nil {
+		t.Fatal("Should be an error")
+	}
+	_, err = parser.Parse(`echo $(echo1`)
+	if err == nil {
+		t.Fatal("Should be an error")
+	}
+	_, err = parser.Parse(`echo $ (echo1`)
+	if err == nil {
+		t.Fatal("Should be an error")
+	}
+	_, err = parser.Parse(`echo (echo1`)
+	if err == nil {
+		t.Fatal("Should be an error")
+	}
+	_, err = parser.Parse(`echo )echo1`)
+	if err == nil {
+		t.Fatal("Should be an error")
+	}
+}
+
+func TestEnv(t *testing.T) {
+	os.Setenv("FOO", "bar")
+
+	parser := NewParser()
+	parser.ParseEnv = true
+	args, err := parser.Parse("echo $FOO")
+	if err != nil {
+		t.Fatal(err)
+	}
+	expected := []string{"echo", "bar"}
+	if !reflect.DeepEqual(args, expected) {
+		t.Fatalf("Expected %#v, but %#v:", expected, args)
+	}
+}
+
+func TestNoEnv(t *testing.T) {
+	parser := NewParser()
+	parser.ParseEnv = true
+	args, err := parser.Parse("echo $BAR")
+	if err != nil {
+		t.Fatal(err)
+	}
+	expected := []string{"echo", ""}
+	if !reflect.DeepEqual(args, expected) {
+		t.Fatalf("Expected %#v, but %#v:", expected, args)
+	}
+}
+
+func TestDupEnv(t *testing.T) {
+	os.Setenv("FOO", "bar")
+	os.Setenv("FOO_BAR", "baz")
+
+	parser := NewParser()
+	parser.ParseEnv = true
+	args, err := parser.Parse("echo $$FOO$")
+	if err != nil {
+		t.Fatal(err)
+	}
+	expected := []string{"echo", "$bar$"}
+	if !reflect.DeepEqual(args, expected) {
+		t.Fatalf("Expected %#v, but %#v:", expected, args)
+	}
+
+	args, err = parser.Parse("echo $${FOO_BAR}$")
+	if err != nil {
+		t.Fatal(err)
+	}
+	expected = []string{"echo", "$baz$"}
+	if !reflect.DeepEqual(args, expected) {
+		t.Fatalf("Expected %#v, but %#v:", expected, args)
+	}
+}
+
+func TestHaveMore(t *testing.T) {
+	parser := NewParser()
+	parser.ParseEnv = true
+
+	line := "echo foo; seq 1 10"
+	args, err := parser.Parse(line)
+	if err != nil {
+		t.Fatalf(err.Error())
+	}
+	expected := []string{"echo", "foo"}
+	if !reflect.DeepEqual(args, expected) {
+		t.Fatalf("Expected %#v, but %#v:", expected, args)
+	}
+
+	if parser.Position == 0 {
+		t.Fatalf("Commands should be remaining")
+	}
+
+	line = string([]rune(line)[parser.Position+1:])
+	args, err = parser.Parse(line)
+	if err != nil {
+		t.Fatalf(err.Error())
+	}
+	expected = []string{"seq", "1", "10"}
+	if !reflect.DeepEqual(args, expected) {
+		t.Fatalf("Expected %#v, but %#v:", expected, args)
+	}
+
+	if parser.Position > 0 {
+		t.Fatalf("Commands should not be remaining")
+	}
+}

cmd/micro/shellwords/util_posix.go

@@ -0,0 +1,22 @@
+// +build !windows
+
+package shellwords
+
+import (
+	"errors"
+	"os"
+	"os/exec"
+	"strings"
+)
+
+func shellRun(line string) (string, error) {
+	shell := os.Getenv("SHELL")
+	b, err := exec.Command(shell, "-c", line).Output()
+	if err != nil {
+		if eerr, ok := err.(*exec.ExitError); ok {
+			b = eerr.Stderr
+		}
+		return "", errors.New(err.Error() + ":" + string(b))
+	}
+	return strings.TrimSpace(string(b)), nil
+}

cmd/micro/shellwords/util_windows.go

@@ -0,0 +1,20 @@
+package shellwords
+
+import (
+	"errors"
+	"os"
+	"os/exec"
+	"strings"
+)
+
+func shellRun(line string) (string, error) {
+	shell := os.Getenv("COMSPEC")
+	b, err := exec.Command(shell, "/c", line).Output()
+	if err != nil {
+		if eerr, ok := err.(*exec.ExitError); ok {
+			b = eerr.Stderr
+		}
+		return "", errors.New(err.Error() + ":" + string(b))
+	}
+	return strings.TrimSpace(string(b)), nil
+}

cmd/micro/split_tree.go

@@ -70,9 +70,9 @@ func (l *LeafNode) VSplit(buf *Buffer, splitIndex int) {
 		copy(l.parent.children[splitIndex+1:], l.parent.children[splitIndex:])
 		l.parent.children[splitIndex] = NewLeafNode(newView, l.parent)
 
-		tab.views = append(tab.views, nil)
-		copy(tab.views[splitIndex+1:], tab.views[splitIndex:])
-		tab.views[splitIndex] = newView
+		tab.Views = append(tab.Views, nil)
+		copy(tab.Views[splitIndex+1:], tab.Views[splitIndex:])
+		tab.Views[splitIndex] = newView
 
 		tab.CurView = splitIndex
 	} else {
@@ -94,9 +94,9 @@ func (l *LeafNode) VSplit(buf *Buffer, splitIndex int) {
 		l.parent.children[search(l.parent.children, l)] = s
 		l.parent = s
 
-		tab.views = append(tab.views, nil)
-		copy(tab.views[splitIndex+1:], tab.views[splitIndex:])
-		tab.views[splitIndex] = newView
+		tab.Views = append(tab.Views, nil)
+		copy(tab.Views[splitIndex+1:], tab.Views[splitIndex:])
+		tab.Views[splitIndex] = newView
 
 		tab.CurView = splitIndex
 	}
@@ -123,9 +123,9 @@ func (l *LeafNode) HSplit(buf *Buffer, splitIndex int) {
 		copy(l.parent.children[splitIndex+1:], l.parent.children[splitIndex:])
 		l.parent.children[splitIndex] = NewLeafNode(newView, l.parent)
 
-		tab.views = append(tab.views, nil)
-		copy(tab.views[splitIndex+1:], tab.views[splitIndex:])
-		tab.views[splitIndex] = newView
+		tab.Views = append(tab.Views, nil)
+		copy(tab.Views[splitIndex+1:], tab.Views[splitIndex:])
+		tab.Views[splitIndex] = newView
 
 		tab.CurView = splitIndex
 	} else {
@@ -139,7 +139,7 @@ func (l *LeafNode) HSplit(buf *Buffer, splitIndex int) {
 		s.parent = l.parent
 		newView := NewView(buf)
 		newView.TabNum = l.parent.tabNum
-		newView.Num = len(tab.views)
+		newView.Num = len(tab.Views)
 		if splitIndex == 1 {
 			s.children = []Node{l, NewLeafNode(newView, s)}
 		} else {
@@ -148,9 +148,9 @@ func (l *LeafNode) HSplit(buf *Buffer, splitIndex int) {
 		l.parent.children[search(l.parent.children, l)] = s
 		l.parent = s
 
-		tab.views = append(tab.views, nil)
-		copy(tab.views[splitIndex+1:], tab.views[splitIndex:])
-		tab.views[splitIndex] = newView
+		tab.Views = append(tab.Views, nil)
+		copy(tab.Views[splitIndex+1:], tab.Views[splitIndex:])
+		tab.Views[splitIndex] = newView
 
 		tab.CurView = splitIndex
 	}
@@ -167,12 +167,12 @@ func (l *LeafNode) Delete() {
 	l.parent.children = l.parent.children[:len(l.parent.children)-1]
 
 	tab := tabs[l.parent.tabNum]
-	j := findView(tab.views, l.view)
-	copy(tab.views[j:], tab.views[j+1:])
-	tab.views[len(tab.views)-1] = nil // or the zero value of T
-	tab.views = tab.views[:len(tab.views)-1]
+	j := findView(tab.Views, l.view)
+	copy(tab.Views[j:], tab.Views[j+1:])
+	tab.Views[len(tab.Views)-1] = nil // or the zero value of T
+	tab.Views = tab.Views[:len(tab.Views)-1]
 
-	for i, v := range tab.views {
+	for i, v := range tab.Views {
 		v.Num = i
 	}
 	if tab.CurView > 0 {

cmd/micro/statusline.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"path"
 	"strconv"
 )
 
@@ -14,13 +15,20 @@ type Statusline struct {
 
 // Display draws the statusline to the screen
 func (sline *Statusline) Display() {
+	if messenger.hasPrompt && !GetGlobalOption("infobar").(bool) {
+		return
+	}
+
 	// We'll draw the line at the lowest line in the view
 	y := sline.view.Height + sline.view.y
 
 	file := sline.view.Buf.GetName()
+	if sline.view.Buf.Settings["basename"].(bool) {
+		file = path.Base(file)
+	}
 
 	// If the buffer is dirty (has been modified) write a little '+'
-	if sline.view.Buf.IsModified {
+	if sline.view.Buf.Modified() {
 		file += " +"
 	}
 
@@ -36,12 +44,28 @@ func (sline *Statusline) Display() {
 	// Add the filetype
 	file += " " + sline.view.Buf.FileType()
 
+	file += " " + sline.view.Buf.Settings["fileformat"].(string)
+
 	rightText := ""
-	if len(helpBinding) > 0 {
-		rightText = helpBinding + " for help "
-		if sline.view.Type == vtHelp {
-			rightText = helpBinding + " to close help "
+	if !sline.view.Buf.Settings["hidehelp"].(bool) {
+		if len(kmenuBinding) > 0 {
+			if globalSettings["keymenu"].(bool) {
+				rightText += kmenuBinding + ": hide bindings"
+			} else {
+				rightText += kmenuBinding + ": show bindings"
+			}
 		}
+		if len(helpBinding) > 0 {
+			if len(kmenuBinding) > 0 {
+				rightText += ", "
+			}
+			if sline.view.Type == vtHelp {
+				rightText += helpBinding + ": close help"
+			} else {
+				rightText += helpBinding + ": open help"
+			}
+		}
+		rightText += " "
 	}
 
 	statusLineStyle := defStyle.Reverse(true)
@@ -51,6 +75,12 @@ func (sline *Statusline) Display() {
 
 	// Maybe there is a unicode filename?
 	fileRunes := []rune(file)
+
+	if sline.view.Type == vtTerm {
+		fileRunes = []rune(sline.view.term.title)
+		rightText = ""
+	}
+
 	viewX := sline.view.x
 	if viewX != 0 {
 		screen.SetContent(viewX, y, ' ', nil, statusLineStyle)

cmd/micro/tab.go

@@ -8,11 +8,13 @@ import (
 
 var tabBarOffset int
 
+// A Tab holds an array of views and a splitTree to determine how the
+// views should be arranged
 type Tab struct {
 	// This contains all the views in this tab
 	// There is generally only one view per tab, but you can have
 	// multiple views with splits
-	views []*View
+	Views []*View
 	// This is the current view for this tab
 	CurView int
 
@@ -22,12 +24,12 @@ type Tab struct {
 // NewTabFromView creates a new tab and puts the given view in the tab
 func NewTabFromView(v *View) *Tab {
 	t := new(Tab)
-	t.views = append(t.views, v)
-	t.views[0].Num = 0
+	t.Views = append(t.Views, v)
+	t.Views[0].Num = 0
 
 	t.tree = new(SplitTree)
 	t.tree.kind = VerticalSplit
-	t.tree.children = []Node{NewLeafNode(t.views[0], t.tree)}
+	t.tree.children = []Node{NewLeafNode(t.Views[0], t.tree)}
 
 	w, h := screen.Size()
 	t.tree.width = w
@@ -36,6 +38,9 @@ func NewTabFromView(v *View) *Tab {
 	if globalSettings["infobar"].(bool) {
 		t.tree.height--
 	}
+	if globalSettings["keymenu"].(bool) {
+		t.tree.height -= 2
+	}
 
 	t.Resize()
 
@@ -45,15 +50,18 @@ func NewTabFromView(v *View) *Tab {
 // SetNum sets all this tab's views to have the correct tab number
 func (t *Tab) SetNum(num int) {
 	t.tree.tabNum = num
-	for _, v := range t.views {
+	for _, v := range t.Views {
 		v.TabNum = num
 	}
 }
 
+// Cleanup cleans up the tree (for example if views have closed)
 func (t *Tab) Cleanup() {
 	t.tree.Cleanup()
 }
 
+// Resize handles a resize event from the terminal and resizes
+// all child views correctly
 func (t *Tab) Resize() {
 	w, h := screen.Size()
 	t.tree.width = w
@@ -62,18 +70,24 @@ func (t *Tab) Resize() {
 	if globalSettings["infobar"].(bool) {
 		t.tree.height--
 	}
+	if globalSettings["keymenu"].(bool) {
+		t.tree.height -= 2
+	}
 
 	t.tree.ResizeSplits()
 
-	for i, v := range t.views {
+	for i, v := range t.Views {
 		v.Num = i
+		if v.Type == vtTerm {
+			v.term.Resize(v.Width, v.Height)
+		}
 	}
 }
 
 // CurView returns the current view
 func CurView() *View {
 	curTab := tabs[curTab]
-	return curTab.views[curTab.CurView]
+	return curTab.Views[curTab.CurView]
 }
 
 // TabbarString returns the string that should be displayed in the tabbar
@@ -89,9 +103,9 @@ func TabbarString() (string, map[int]int) {
 		} else {
 			str += " "
 		}
-		buf := t.views[t.CurView].Buf
+		buf := t.Views[t.CurView].Buf
 		str += buf.GetName()
-		if buf.IsModified {
+		if buf.Modified() {
 			str += " +"
 		}
 		if i == curTab {

cmd/micro/terminal.go

@@ -0,0 +1,228 @@
+package main
+
+import (
+	"bytes"
+	"fmt"
+	"os"
+	"os/exec"
+	"strconv"
+	"strings"
+
+	"github.com/zyedidia/clipboard"
+	"github.com/zyedidia/tcell"
+	"github.com/zyedidia/terminal"
+)
+
+const (
+	VTIdle    = iota // Waiting for a new command
+	VTRunning        // Currently running a command
+	VTDone           // Finished running a command
+)
+
+// A Terminal holds information for the terminal emulator
+type Terminal struct {
+	state     terminal.State
+	view      *View
+	vtOld     ViewType
+	term      *terminal.VT
+	title     string
+	status    int
+	selection [2]Loc
+	wait      bool
+	getOutput bool
+	output    *bytes.Buffer
+	callback  string
+}
+
+// HasSelection returns whether this terminal has a valid selection
+func (t *Terminal) HasSelection() bool {
+	return t.selection[0] != t.selection[1]
+}
+
+// GetSelection returns the selected text
+func (t *Terminal) GetSelection(width int) string {
+	start := t.selection[0]
+	end := t.selection[1]
+	if start.GreaterThan(end) {
+		start, end = end, start
+	}
+	var ret string
+	var l Loc
+	for y := start.Y; y <= end.Y; y++ {
+		for x := 0; x < width; x++ {
+			l.X, l.Y = x, y
+			if l.GreaterEqual(start) && l.LessThan(end) {
+				c, _, _ := t.state.Cell(x, y)
+				ret += string(c)
+			}
+		}
+	}
+	return ret
+}
+
+// Start begins a new command in this terminal with a given view
+func (t *Terminal) Start(execCmd []string, view *View, getOutput bool) error {
+	if len(execCmd) <= 0 {
+		return nil
+	}
+
+	cmd := exec.Command(execCmd[0], execCmd[1:]...)
+	t.output = nil
+	if getOutput {
+		t.output = bytes.NewBuffer([]byte{})
+	}
+	term, _, err := terminal.Start(&t.state, cmd, t.output)
+	if err != nil {
+		return err
+	}
+	t.term = term
+	t.view = view
+	t.getOutput = getOutput
+	t.vtOld = view.Type
+	t.status = VTRunning
+	t.title = execCmd[0] + ":" + strconv.Itoa(cmd.Process.Pid)
+
+	go func() {
+		for {
+			err := term.Parse()
+			if err != nil {
+				fmt.Fprintln(os.Stderr, "[Press enter to close]")
+				break
+			}
+			updateterm <- true
+		}
+		closeterm <- view.Num
+	}()
+
+	return nil
+}
+
+// Resize informs the terminal of a resize event
+func (t *Terminal) Resize(width, height int) {
+	t.term.Resize(width, height)
+}
+
+// HandleEvent handles a tcell event by forwarding it to the terminal emulator
+// If the event is a mouse event and the program running in the emulator
+// does not have mouse support, the emulator will support selections and
+// copy-paste
+func (t *Terminal) HandleEvent(event tcell.Event) {
+	if e, ok := event.(*tcell.EventKey); ok {
+		if t.status == VTDone {
+			switch e.Key() {
+			case tcell.KeyEscape, tcell.KeyCtrlQ, tcell.KeyEnter:
+				t.Close()
+				t.view.Type = vtDefault
+			default:
+			}
+		}
+		if e.Key() == tcell.KeyCtrlC && t.HasSelection() {
+			clipboard.WriteAll(t.GetSelection(t.view.Width), "clipboard")
+			messenger.Message("Copied selection to clipboard")
+		} else if t.status != VTDone {
+			t.WriteString(event.EscSeq())
+		}
+	} else if e, ok := event.(*tcell.EventMouse); !ok || t.state.Mode(terminal.ModeMouseMask) {
+		t.WriteString(event.EscSeq())
+	} else {
+		x, y := e.Position()
+		x -= t.view.x
+		y += t.view.y
+
+		if e.Buttons() == tcell.Button1 {
+			if !t.view.mouseReleased {
+				// drag
+				t.selection[1].X = x
+				t.selection[1].Y = y
+			} else {
+				t.selection[0].X = x
+				t.selection[0].Y = y
+				t.selection[1].X = x
+				t.selection[1].Y = y
+			}
+
+			t.view.mouseReleased = false
+		} else if e.Buttons() == tcell.ButtonNone {
+			if !t.view.mouseReleased {
+				t.selection[1].X = x
+				t.selection[1].Y = y
+			}
+			t.view.mouseReleased = true
+		}
+	}
+}
+
+// Stop stops execution of the terminal and sets the status
+// to VTDone
+func (t *Terminal) Stop() {
+	t.term.File().Close()
+	t.term.Close()
+	if t.wait {
+		t.status = VTDone
+	} else {
+		t.Close()
+		t.view.Type = t.vtOld
+	}
+}
+
+// Close sets the status to VTIdle indicating that the terminal
+// is ready for a new command to execute
+func (t *Terminal) Close() {
+	t.status = VTIdle
+	// call the lua function that the user has given as a callback
+	if t.getOutput {
+		_, err := Call(t.callback, t.output.String())
+		if err != nil && !strings.HasPrefix(err.Error(), "function does not exist") {
+			TermMessage(err)
+		}
+	}
+}
+
+// WriteString writes a given string to this terminal's pty
+func (t *Terminal) WriteString(str string) {
+	t.term.File().WriteString(str)
+}
+
+// Display displays this terminal in a view
+func (t *Terminal) Display() {
+	divider := 0
+	if t.view.x != 0 {
+		divider = 1
+		dividerStyle := defStyle
+		if style, ok := colorscheme["divider"]; ok {
+			dividerStyle = style
+		}
+		for i := 0; i < t.view.Height; i++ {
+			screen.SetContent(t.view.x, t.view.y+i, '|', nil, dividerStyle.Reverse(true))
+		}
+	}
+	t.state.Lock()
+	defer t.state.Unlock()
+
+	var l Loc
+	for y := 0; y < t.view.Height; y++ {
+		for x := 0; x < t.view.Width; x++ {
+			l.X, l.Y = x, y
+			c, f, b := t.state.Cell(x, y)
+
+			fg, bg := int(f), int(b)
+			if f == terminal.DefaultFG {
+				fg = int(tcell.ColorDefault)
+			}
+			if b == terminal.DefaultBG {
+				bg = int(tcell.ColorDefault)
+			}
+			st := tcell.StyleDefault.Foreground(GetColor256(int(fg))).Background(GetColor256(int(bg)))
+
+			if l.LessThan(t.selection[1]) && l.GreaterEqual(t.selection[0]) || l.LessThan(t.selection[0]) && l.GreaterEqual(t.selection[1]) {
+				st = st.Reverse(true)
+			}
+
+			screen.SetContent(t.view.x+x+divider, t.view.y+y, c, nil, st)
+		}
+	}
+	if t.state.CursorVisible() && tabs[curTab].CurView == t.view.Num {
+		curx, cury := t.state.Cursor()
+		screen.ShowCursor(curx+t.view.x+divider, cury+t.view.y)
+	}
+}

cmd/micro/terminfo/LICENSE.md

@@ -0,0 +1,203 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
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+      and distribution as defined by Sections 1 through 9 of this document.
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+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
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+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
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+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
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+      form, that is based on (or derived from) the Work and for which the
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+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
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+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
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+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
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+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
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+   4. Redistribution. You may reproduce and distribute copies of the
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+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
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+
+      (d) If the Work includes a "NOTICE" text file as part of its
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+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
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+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
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+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
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+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
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+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
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+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+

cmd/micro/terminfo/README.md

@@ -0,0 +1,6 @@
+# Terminfo parser
+
+This terminfo parser was written by the authors of [tcell](https://github.com/gdamore/tcell). We are using it here
+to compile the terminal database if the terminal entry is not found in set of precompiled terminals.
+
+The source for `mkinfo.go` is adapted from tcell's `mkinfo` tool to be more of a library.

cmd/micro/terminfo/mkinfo.go

@@ -0,0 +1,512 @@
+// Copyright 2017 The TCell Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use file except in compliance with the License.
+// You may obtain a copy of the license at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// This command is used to generate suitable configuration files in either
+// go syntax or in JSON.  It defaults to JSON output on stdout.  If no
+// term values are specified on the command line, then $TERM is used.
+//
+// Usage is like this:
+//
+// mkinfo [-init] [-go file.go] [-json file.json] [-quiet] [-nofatal] [<term>...]
+//
+// -gzip     specifies output should be compressed (json only)
+// -go       specifies Go output into the named file.  Use - for stdout.
+// -json     specifies JSON output in the named file.  Use - for stdout
+// -nofatal  indicates that errors loading definitions should not be fatal
+//
+
+package terminfo
+
+import (
+	"bytes"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"os"
+	"os/exec"
+	"regexp"
+	"strconv"
+	"strings"
+)
+
+type termcap struct {
+	name    string
+	desc    string
+	aliases []string
+	bools   map[string]bool
+	nums    map[string]int
+	strs    map[string]string
+}
+
+func (tc *termcap) getnum(s string) int {
+	return (tc.nums[s])
+}
+
+func (tc *termcap) getflag(s string) bool {
+	return (tc.bools[s])
+}
+
+func (tc *termcap) getstr(s string) string {
+	return (tc.strs[s])
+}
+
+const (
+	NONE = iota
+	CTRL
+	ESC
+)
+
+func unescape(s string) string {
+	// Various escapes are in \x format.  Control codes are
+	// encoded as ^M (carat followed by ASCII equivalent).
+	// Escapes are: \e, \E - escape
+	//  \0 NULL, \n \l \r \t \b \f \s for equivalent C escape.
+	buf := &bytes.Buffer{}
+	esc := NONE
+
+	for i := 0; i < len(s); i++ {
+		c := s[i]
+		switch esc {
+		case NONE:
+			switch c {
+			case '\\':
+				esc = ESC
+			case '^':
+				esc = CTRL
+			default:
+				buf.WriteByte(c)
+			}
+		case CTRL:
+			buf.WriteByte(c - 0x40)
+			esc = NONE
+		case ESC:
+			switch c {
+			case 'E', 'e':
+				buf.WriteByte(0x1b)
+			case '0', '1', '2', '3', '4', '5', '6', '7':
+				if i+2 < len(s) && s[i+1] >= '0' && s[i+1] <= '7' && s[i+2] >= '0' && s[i+2] <= '7' {
+					buf.WriteByte(((c - '0') * 64) + ((s[i+1] - '0') * 8) + (s[i+2] - '0'))
+					i = i + 2
+				} else if c == '0' {
+					buf.WriteByte(0)
+				}
+			case 'n':
+				buf.WriteByte('\n')
+			case 'r':
+				buf.WriteByte('\r')
+			case 't':
+				buf.WriteByte('\t')
+			case 'b':
+				buf.WriteByte('\b')
+			case 'f':
+				buf.WriteByte('\f')
+			case 's':
+				buf.WriteByte(' ')
+			case 'l':
+				panic("WTF: weird format: " + s)
+			default:
+				buf.WriteByte(c)
+			}
+			esc = NONE
+		}
+	}
+	return (buf.String())
+}
+
+func (tc *termcap) setupterm(name string) error {
+	cmd := exec.Command("infocmp", "-1", name)
+	output := &bytes.Buffer{}
+	cmd.Stdout = output
+
+	tc.strs = make(map[string]string)
+	tc.bools = make(map[string]bool)
+	tc.nums = make(map[string]int)
+
+	err := cmd.Run()
+	if err != nil {
+		return err
+	}
+
+	// Now parse the output.
+	// We get comment lines (starting with "#"), followed by
+	// a header line that looks like "<name>|<alias>|...|<desc>"
+	// then capabilities, one per line, starting with a tab and ending
+	// with a comma and newline.
+	lines := strings.Split(output.String(), "\n")
+	for len(lines) > 0 && strings.HasPrefix(lines[0], "#") {
+		lines = lines[1:]
+	}
+
+	// Ditch trailing empty last line
+	if lines[len(lines)-1] == "" {
+		lines = lines[:len(lines)-1]
+	}
+	header := lines[0]
+	if strings.HasSuffix(header, ",") {
+		header = header[:len(header)-1]
+	}
+	names := strings.Split(header, "|")
+	tc.name = names[0]
+	names = names[1:]
+	if len(names) > 0 {
+		tc.desc = names[len(names)-1]
+		names = names[:len(names)-1]
+	}
+	tc.aliases = names
+	for _, val := range lines[1:] {
+		if (!strings.HasPrefix(val, "\t")) ||
+			(!strings.HasSuffix(val, ",")) {
+			return (errors.New("malformed infocmp: " + val))
+		}
+
+		val = val[1:]
+		val = val[:len(val)-1]
+
+		if k := strings.SplitN(val, "=", 2); len(k) == 2 {
+			tc.strs[k[0]] = unescape(k[1])
+		} else if k := strings.SplitN(val, "#", 2); len(k) == 2 {
+			if u, err := strconv.ParseUint(k[1], 10, 0); err != nil {
+				return (err)
+			} else {
+				tc.nums[k[0]] = int(u)
+			}
+		} else {
+			tc.bools[val] = true
+		}
+	}
+	return nil
+}
+
+// This program is used to collect data from the system's terminfo library,
+// and write it into Go source code.  That is, we maintain our terminfo
+// capabilities encoded in the program.  It should never need to be run by
+// an end user, but developers can use this to add codes for additional
+// terminal types.
+//
+// If a terminal name ending with -truecolor is given, and we cannot find
+// one, we will try to fabricate one from either the -256color (if present)
+// or the unadorned base name, adding the XTerm specific 24-bit color
+// escapes.  We believe that all 24-bit capable terminals use the same
+// escape sequences, and terminfo has yet to evolve to support this.
+func getinfo(name string) (*Terminfo, string, error) {
+	var tc termcap
+	addTrueColor := false
+	if err := tc.setupterm(name); err != nil {
+		if strings.HasSuffix(name, "-truecolor") {
+			base := name[:len(name)-len("-truecolor")]
+			// Probably -256color is closest to what we want
+			if err = tc.setupterm(base + "-256color"); err != nil {
+				err = tc.setupterm(base)
+			}
+			if err == nil {
+				addTrueColor = true
+			}
+			tc.name = name
+		}
+		if err != nil {
+			return nil, "", err
+		}
+	}
+	t := &Terminfo{}
+	// If this is an alias record, then just emit the alias
+	t.Name = tc.name
+	if t.Name != name {
+		return t, "", nil
+	}
+	t.Aliases = tc.aliases
+	t.Colors = tc.getnum("colors")
+	t.Columns = tc.getnum("cols")
+	t.Lines = tc.getnum("lines")
+	t.Bell = tc.getstr("bel")
+	t.Clear = tc.getstr("clear")
+	t.EnterCA = tc.getstr("smcup")
+	t.ExitCA = tc.getstr("rmcup")
+	t.ShowCursor = tc.getstr("cnorm")
+	t.HideCursor = tc.getstr("civis")
+	t.AttrOff = tc.getstr("sgr0")
+	t.Underline = tc.getstr("smul")
+	t.Bold = tc.getstr("bold")
+	t.Blink = tc.getstr("blink")
+	t.Dim = tc.getstr("dim")
+	t.Reverse = tc.getstr("rev")
+	t.EnterKeypad = tc.getstr("smkx")
+	t.ExitKeypad = tc.getstr("rmkx")
+	t.SetFg = tc.getstr("setaf")
+	t.SetBg = tc.getstr("setab")
+	t.SetCursor = tc.getstr("cup")
+	t.CursorBack1 = tc.getstr("cub1")
+	t.CursorUp1 = tc.getstr("cuu1")
+	t.KeyF1 = tc.getstr("kf1")
+	t.KeyF2 = tc.getstr("kf2")
+	t.KeyF3 = tc.getstr("kf3")
+	t.KeyF4 = tc.getstr("kf4")
+	t.KeyF5 = tc.getstr("kf5")
+	t.KeyF6 = tc.getstr("kf6")
+	t.KeyF7 = tc.getstr("kf7")
+	t.KeyF8 = tc.getstr("kf8")
+	t.KeyF9 = tc.getstr("kf9")
+	t.KeyF10 = tc.getstr("kf10")
+	t.KeyF11 = tc.getstr("kf11")
+	t.KeyF12 = tc.getstr("kf12")
+	t.KeyF13 = tc.getstr("kf13")
+	t.KeyF14 = tc.getstr("kf14")
+	t.KeyF15 = tc.getstr("kf15")
+	t.KeyF16 = tc.getstr("kf16")
+	t.KeyF17 = tc.getstr("kf17")
+	t.KeyF18 = tc.getstr("kf18")
+	t.KeyF19 = tc.getstr("kf19")
+	t.KeyF20 = tc.getstr("kf20")
+	t.KeyF21 = tc.getstr("kf21")
+	t.KeyF22 = tc.getstr("kf22")
+	t.KeyF23 = tc.getstr("kf23")
+	t.KeyF24 = tc.getstr("kf24")
+	t.KeyF25 = tc.getstr("kf25")
+	t.KeyF26 = tc.getstr("kf26")
+	t.KeyF27 = tc.getstr("kf27")
+	t.KeyF28 = tc.getstr("kf28")
+	t.KeyF29 = tc.getstr("kf29")
+	t.KeyF30 = tc.getstr("kf30")
+	t.KeyF31 = tc.getstr("kf31")
+	t.KeyF32 = tc.getstr("kf32")
+	t.KeyF33 = tc.getstr("kf33")
+	t.KeyF34 = tc.getstr("kf34")
+	t.KeyF35 = tc.getstr("kf35")
+	t.KeyF36 = tc.getstr("kf36")
+	t.KeyF37 = tc.getstr("kf37")
+	t.KeyF38 = tc.getstr("kf38")
+	t.KeyF39 = tc.getstr("kf39")
+	t.KeyF40 = tc.getstr("kf40")
+	t.KeyF41 = tc.getstr("kf41")
+	t.KeyF42 = tc.getstr("kf42")
+	t.KeyF43 = tc.getstr("kf43")
+	t.KeyF44 = tc.getstr("kf44")
+	t.KeyF45 = tc.getstr("kf45")
+	t.KeyF46 = tc.getstr("kf46")
+	t.KeyF47 = tc.getstr("kf47")
+	t.KeyF48 = tc.getstr("kf48")
+	t.KeyF49 = tc.getstr("kf49")
+	t.KeyF50 = tc.getstr("kf50")
+	t.KeyF51 = tc.getstr("kf51")
+	t.KeyF52 = tc.getstr("kf52")
+	t.KeyF53 = tc.getstr("kf53")
+	t.KeyF54 = tc.getstr("kf54")
+	t.KeyF55 = tc.getstr("kf55")
+	t.KeyF56 = tc.getstr("kf56")
+	t.KeyF57 = tc.getstr("kf57")
+	t.KeyF58 = tc.getstr("kf58")
+	t.KeyF59 = tc.getstr("kf59")
+	t.KeyF60 = tc.getstr("kf60")
+	t.KeyF61 = tc.getstr("kf61")
+	t.KeyF62 = tc.getstr("kf62")
+	t.KeyF63 = tc.getstr("kf63")
+	t.KeyF64 = tc.getstr("kf64")
+	t.KeyInsert = tc.getstr("kich1")
+	t.KeyDelete = tc.getstr("kdch1")
+	t.KeyBackspace = tc.getstr("kbs")
+	t.KeyHome = tc.getstr("khome")
+	t.KeyEnd = tc.getstr("kend")
+	t.KeyUp = tc.getstr("kcuu1")
+	t.KeyDown = tc.getstr("kcud1")
+	t.KeyRight = tc.getstr("kcuf1")
+	t.KeyLeft = tc.getstr("kcub1")
+	t.KeyPgDn = tc.getstr("knp")
+	t.KeyPgUp = tc.getstr("kpp")
+	t.KeyBacktab = tc.getstr("kcbt")
+	t.KeyExit = tc.getstr("kext")
+	t.KeyCancel = tc.getstr("kcan")
+	t.KeyPrint = tc.getstr("kprt")
+	t.KeyHelp = tc.getstr("khlp")
+	t.KeyClear = tc.getstr("kclr")
+	t.AltChars = tc.getstr("acsc")
+	t.EnterAcs = tc.getstr("smacs")
+	t.ExitAcs = tc.getstr("rmacs")
+	t.EnableAcs = tc.getstr("enacs")
+	t.Mouse = tc.getstr("kmous")
+	t.KeyShfRight = tc.getstr("kRIT")
+	t.KeyShfLeft = tc.getstr("kLFT")
+	t.KeyShfHome = tc.getstr("kHOM")
+	t.KeyShfEnd = tc.getstr("kEND")
+
+	// Terminfo lacks descriptions for a bunch of modified keys,
+	// but modern XTerm and emulators often have them.  Let's add them,
+	// if the shifted right and left arrows are defined.
+	if t.KeyShfRight == "\x1b[1;2C" && t.KeyShfLeft == "\x1b[1;2D" {
+		t.KeyShfUp = "\x1b[1;2A"
+		t.KeyShfDown = "\x1b[1;2B"
+		t.KeyMetaUp = "\x1b[1;9A"
+		t.KeyMetaDown = "\x1b[1;9B"
+		t.KeyMetaRight = "\x1b[1;9C"
+		t.KeyMetaLeft = "\x1b[1;9D"
+		t.KeyAltUp = "\x1b[1;3A"
+		t.KeyAltDown = "\x1b[1;3B"
+		t.KeyAltRight = "\x1b[1;3C"
+		t.KeyAltLeft = "\x1b[1;3D"
+		t.KeyCtrlUp = "\x1b[1;5A"
+		t.KeyCtrlDown = "\x1b[1;5B"
+		t.KeyCtrlRight = "\x1b[1;5C"
+		t.KeyCtrlLeft = "\x1b[1;5D"
+		t.KeyAltShfUp = "\x1b[1;4A"
+		t.KeyAltShfDown = "\x1b[1;4B"
+		t.KeyAltShfRight = "\x1b[1;4C"
+		t.KeyAltShfLeft = "\x1b[1;4D"
+
+		t.KeyMetaShfUp = "\x1b[1;10A"
+		t.KeyMetaShfDown = "\x1b[1;10B"
+		t.KeyMetaShfRight = "\x1b[1;10C"
+		t.KeyMetaShfLeft = "\x1b[1;10D"
+
+		t.KeyCtrlShfUp = "\x1b[1;6A"
+		t.KeyCtrlShfDown = "\x1b[1;6B"
+		t.KeyCtrlShfRight = "\x1b[1;6C"
+		t.KeyCtrlShfLeft = "\x1b[1;6D"
+	}
+	// And also for Home and End
+	if t.KeyShfHome == "\x1b[1;2H" && t.KeyShfEnd == "\x1b[1;2F" {
+		t.KeyCtrlHome = "\x1b[1;5H"
+		t.KeyCtrlEnd = "\x1b[1;5F"
+		t.KeyAltHome = "\x1b[1;9H"
+		t.KeyAltEnd = "\x1b[1;9F"
+		t.KeyCtrlShfHome = "\x1b[1;6H"
+		t.KeyCtrlShfEnd = "\x1b[1;6F"
+		t.KeyAltShfHome = "\x1b[1;4H"
+		t.KeyAltShfEnd = "\x1b[1;4F"
+		t.KeyMetaShfHome = "\x1b[1;10H"
+		t.KeyMetaShfEnd = "\x1b[1;10F"
+	}
+
+	// And the same thing for rxvt and workalikes (Eterm, aterm, etc.)
+	// It seems that urxvt at least send ESC as ALT prefix for these,
+	// although some places seem to indicate a separate ALT key sesquence.
+	if t.KeyShfRight == "\x1b[c" && t.KeyShfLeft == "\x1b[d" {
+		t.KeyShfUp = "\x1b[a"
+		t.KeyShfDown = "\x1b[b"
+		t.KeyCtrlUp = "\x1b[Oa"
+		t.KeyCtrlDown = "\x1b[Ob"
+		t.KeyCtrlRight = "\x1b[Oc"
+		t.KeyCtrlLeft = "\x1b[Od"
+	}
+	if t.KeyShfHome == "\x1b[7$" && t.KeyShfEnd == "\x1b[8$" {
+		t.KeyCtrlHome = "\x1b[7^"
+		t.KeyCtrlEnd = "\x1b[8^"
+	}
+
+	// If the kmous entry is present, then we need to record the
+	// the codes to enter and exit mouse mode.  Sadly, this is not
+	// part of the terminfo databases anywhere that I've found, but
+	// is an extension.  The escape codes are documented in the XTerm
+	// manual, and all terminals that have kmous are expected to
+	// use these same codes, unless explicitly configured otherwise
+	// vi XM.  Note that in any event, we only known how to parse either
+	// x11 or SGR mouse events -- if your terminal doesn't support one
+	// of these two forms, you maybe out of luck.
+	t.MouseMode = tc.getstr("XM")
+	if t.Mouse != "" && t.MouseMode == "" {
+		// we anticipate that all xterm mouse tracking compatible
+		// terminals understand mouse tracking (1000), but we hope
+		// that those that don't understand any-event tracking (1003)
+		// will at least ignore it.  Likewise we hope that terminals
+		// that don't understand SGR reporting (1006) just ignore it.
+		t.MouseMode = "%?%p1%{1}%=%t%'h'%Pa%e%'l'%Pa%;" +
+			"\x1b[?1000%ga%c\x1b[?1002%ga%c\x1b[?1003%ga%c\x1b[?1006%ga%c"
+	}
+
+	// We only support colors in ANSI 8 or 256 color mode.
+	if t.Colors < 8 || t.SetFg == "" {
+		t.Colors = 0
+	}
+	if t.SetCursor == "" {
+		return nil, "", errors.New("terminal not cursor addressable")
+	}
+
+	// For padding, we lookup the pad char.  If that isn't present,
+	// and npc is *not* set, then we assume a null byte.
+	t.PadChar = tc.getstr("pad")
+	if t.PadChar == "" {
+		if !tc.getflag("npc") {
+			t.PadChar = "\u0000"
+		}
+	}
+
+	// For some terminals we fabricate a -truecolor entry, that may
+	// not exist in terminfo.
+	if addTrueColor {
+		t.SetFgRGB = "\x1b[38;2;%p1%d;%p2%d;%p3%dm"
+		t.SetBgRGB = "\x1b[48;2;%p1%d;%p2%d;%p3%dm"
+		t.SetFgBgRGB = "\x1b[38;2;%p1%d;%p2%d;%p3%d;" +
+			"48;2;%p4%d;%p5%d;%p6%dm"
+	}
+
+	// For terminals that use "standard" SGR sequences, lets combine the
+	// foreground and background together.
+	if strings.HasPrefix(t.SetFg, "\x1b[") &&
+		strings.HasPrefix(t.SetBg, "\x1b[") &&
+		strings.HasSuffix(t.SetFg, "m") &&
+		strings.HasSuffix(t.SetBg, "m") {
+		fg := t.SetFg[:len(t.SetFg)-1]
+		r := regexp.MustCompile("%p1")
+		bg := r.ReplaceAllString(t.SetBg[2:], "%p2")
+		t.SetFgBg = fg + ";" + bg
+	}
+
+	return t, tc.desc, nil
+}
+
+func WriteDB(filename string) error {
+	var e error
+	js := []byte{}
+	args := []string{os.Getenv("TERM")}
+
+	tdata := make(map[string]*Terminfo)
+	descs := make(map[string]string)
+
+	for _, term := range args {
+		if t, desc, e := getinfo(term); e != nil {
+			return e
+		} else {
+			tdata[term] = t
+			descs[term] = desc
+		}
+	}
+
+	if len(tdata) == 0 {
+		// No data.
+		return errors.New("No data")
+	}
+	o := os.Stdout
+	if o, e = os.Create(filename); e != nil {
+		return e
+	}
+	var w io.WriteCloser
+	w = o
+	for _, term := range args {
+		if t := tdata[term]; t != nil {
+			js, e = json.Marshal(t)
+			fmt.Fprintln(w, string(js))
+		}
+		// arguably if there is more than one term, this
+		// should be a javascript array, but that's not how
+		// we load it.  We marshal objects one at a time from
+		// the file.
+	}
+	if e != nil {
+		return e
+	}
+	w.Close()
+	if w != o {
+		o.Close()
+	}
+
+	return nil
+}

cmd/micro/terminfo/terminfo.go

@@ -0,0 +1,837 @@
+// Copyright 2017 The TCell Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use file except in compliance with the License.
+// You may obtain a copy of the license at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package terminfo
+
+import (
+	"bytes"
+	"compress/gzip"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"os"
+	"path"
+	"strconv"
+	"strings"
+	"sync"
+)
+
+var (
+	// ErrTermNotFound indicates that a suitable terminal entry could
+	// not be found.  This can result from either not having TERM set,
+	// or from the TERM failing to support certain minimal functionality,
+	// in particular absolute cursor addressability (the cup capability)
+	// is required.  For example, legacy "adm3" lacks this capability,
+	// whereas the slightly newer "adm3a" supports it.  This failure
+	// occurs most often with "dumb".
+	ErrTermNotFound = errors.New("terminal entry not found")
+)
+
+// Terminfo represents a terminfo entry.  Note that we use friendly names
+// in Go, but when we write out JSON, we use the same names as terminfo.
+// The name, aliases and smous, rmous fields do not come from terminfo directly.
+type Terminfo struct {
+	Name         string   `json:"name"`
+	Aliases      []string `json:"aliases,omitempty"`
+	Columns      int      `json:"cols,omitempty"`   // cols
+	Lines        int      `json:"lines,omitempty"`  // lines
+	Colors       int      `json:"colors,omitempty"` // colors
+	Bell         string   `json:"bell,omitempty"`   // bell
+	Clear        string   `json:"clear,omitempty"`  // clear
+	EnterCA      string   `json:"smcup,omitempty"`  // smcup
+	ExitCA       string   `json:"rmcup,omitempty"`  // rmcup
+	ShowCursor   string   `json:"cnorm,omitempty"`  // cnorm
+	HideCursor   string   `json:"civis,omitempty"`  // civis
+	AttrOff      string   `json:"sgr0,omitempty"`   // sgr0
+	Underline    string   `json:"smul,omitempty"`   // smul
+	Bold         string   `json:"bold,omitempty"`   // bold
+	Blink        string   `json:"blink,omitempty"`  // blink
+	Reverse      string   `json:"rev,omitempty"`    // rev
+	Dim          string   `json:"dim,omitempty"`    // dim
+	EnterKeypad  string   `json:"smkx,omitempty"`   // smkx
+	ExitKeypad   string   `json:"rmkx,omitempty"`   // rmkx
+	SetFg        string   `json:"setaf,omitempty"`  // setaf
+	SetBg        string   `json:"setbg,omitempty"`  // setab
+	SetCursor    string   `json:"cup,omitempty"`    // cup
+	CursorBack1  string   `json:"cub1,omitempty"`   // cub1
+	CursorUp1    string   `json:"cuu1,omitempty"`   // cuu1
+	PadChar      string   `json:"pad,omitempty"`    // pad
+	KeyBackspace string   `json:"kbs,omitempty"`    // kbs
+	KeyF1        string   `json:"kf1,omitempty"`    // kf1
+	KeyF2        string   `json:"kf2,omitempty"`    // kf2
+	KeyF3        string   `json:"kf3,omitempty"`    // kf3
+	KeyF4        string   `json:"kf4,omitempty"`    // kf4
+	KeyF5        string   `json:"kf5,omitempty"`    // kf5
+	KeyF6        string   `json:"kf6,omitempty"`    // kf6
+	KeyF7        string   `json:"kf7,omitempty"`    // kf7
+	KeyF8        string   `json:"kf8,omitempty"`    // kf8
+	KeyF9        string   `json:"kf9,omitempty"`    // kf9
+	KeyF10       string   `json:"kf10,omitempty"`   // kf10
+	KeyF11       string   `json:"kf11,omitempty"`   // kf11
+	KeyF12       string   `json:"kf12,omitempty"`   // kf12
+	KeyF13       string   `json:"kf13,omitempty"`   // kf13
+	KeyF14       string   `json:"kf14,omitempty"`   // kf14
+	KeyF15       string   `json:"kf15,omitempty"`   // kf15
+	KeyF16       string   `json:"kf16,omitempty"`   // kf16
+	KeyF17       string   `json:"kf17,omitempty"`   // kf17
+	KeyF18       string   `json:"kf18,omitempty"`   // kf18
+	KeyF19       string   `json:"kf19,omitempty"`   // kf19
+	KeyF20       string   `json:"kf20,omitempty"`   // kf20
+	KeyF21       string   `json:"kf21,omitempty"`   // kf21
+	KeyF22       string   `json:"kf22,omitempty"`   // kf22
+	KeyF23       string   `json:"kf23,omitempty"`   // kf23
+	KeyF24       string   `json:"kf24,omitempty"`   // kf24
+	KeyF25       string   `json:"kf25,omitempty"`   // kf25
+	KeyF26       string   `json:"kf26,omitempty"`   // kf26
+	KeyF27       string   `json:"kf27,omitempty"`   // kf27
+	KeyF28       string   `json:"kf28,omitempty"`   // kf28
+	KeyF29       string   `json:"kf29,omitempty"`   // kf29
+	KeyF30       string   `json:"kf30,omitempty"`   // kf30
+	KeyF31       string   `json:"kf31,omitempty"`   // kf31
+	KeyF32       string   `json:"kf32,omitempty"`   // kf32
+	KeyF33       string   `json:"kf33,omitempty"`   // kf33
+	KeyF34       string   `json:"kf34,omitempty"`   // kf34
+	KeyF35       string   `json:"kf35,omitempty"`   // kf35
+	KeyF36       string   `json:"kf36,omitempty"`   // kf36
+	KeyF37       string   `json:"kf37,omitempty"`   // kf37
+	KeyF38       string   `json:"kf38,omitempty"`   // kf38
+	KeyF39       string   `json:"kf39,omitempty"`   // kf39
+	KeyF40       string   `json:"kf40,omitempty"`   // kf40
+	KeyF41       string   `json:"kf41,omitempty"`   // kf41
+	KeyF42       string   `json:"kf42,omitempty"`   // kf42
+	KeyF43       string   `json:"kf43,omitempty"`   // kf43
+	KeyF44       string   `json:"kf44,omitempty"`   // kf44
+	KeyF45       string   `json:"kf45,omitempty"`   // kf45
+	KeyF46       string   `json:"kf46,omitempty"`   // kf46
+	KeyF47       string   `json:"kf47,omitempty"`   // kf47
+	KeyF48       string   `json:"kf48,omitempty"`   // kf48
+	KeyF49       string   `json:"kf49,omitempty"`   // kf49
+	KeyF50       string   `json:"kf50,omitempty"`   // kf50
+	KeyF51       string   `json:"kf51,omitempty"`   // kf51
+	KeyF52       string   `json:"kf52,omitempty"`   // kf52
+	KeyF53       string   `json:"kf53,omitempty"`   // kf53
+	KeyF54       string   `json:"kf54,omitempty"`   // kf54
+	KeyF55       string   `json:"kf55,omitempty"`   // kf55
+	KeyF56       string   `json:"kf56,omitempty"`   // kf56
+	KeyF57       string   `json:"kf57,omitempty"`   // kf57
+	KeyF58       string   `json:"kf58,omitempty"`   // kf58
+	KeyF59       string   `json:"kf59,omitempty"`   // kf59
+	KeyF60       string   `json:"kf60,omitempty"`   // kf60
+	KeyF61       string   `json:"kf61,omitempty"`   // kf61
+	KeyF62       string   `json:"kf62,omitempty"`   // kf62
+	KeyF63       string   `json:"kf63,omitempty"`   // kf63
+	KeyF64       string   `json:"kf64,omitempty"`   // kf64
+	KeyInsert    string   `json:"kich,omitempty"`   // kich1
+	KeyDelete    string   `json:"kdch,omitempty"`   // kdch1
+	KeyHome      string   `json:"khome,omitempty"`  // khome
+	KeyEnd       string   `json:"kend,omitempty"`   // kend
+	KeyHelp      string   `json:"khlp,omitempty"`   // khlp
+	KeyPgUp      string   `json:"kpp,omitempty"`    // kpp
+	KeyPgDn      string   `json:"knp,omitempty"`    // knp
+	KeyUp        string   `json:"kcuu1,omitempty"`  // kcuu1
+	KeyDown      string   `json:"kcud1,omitempty"`  // kcud1
+	KeyLeft      string   `json:"kcub1,omitempty"`  // kcub1
+	KeyRight     string   `json:"kcuf1,omitempty"`  // kcuf1
+	KeyBacktab   string   `json:"kcbt,omitempty"`   // kcbt
+	KeyExit      string   `json:"kext,omitempty"`   // kext
+	KeyClear     string   `json:"kclr,omitempty"`   // kclr
+	KeyPrint     string   `json:"kprt,omitempty"`   // kprt
+	KeyCancel    string   `json:"kcan,omitempty"`   // kcan
+	Mouse        string   `json:"kmous,omitempty"`  // kmous
+	MouseMode    string   `json:"XM,omitempty"`     // XM
+	AltChars     string   `json:"acsc,omitempty"`   // acsc
+	EnterAcs     string   `json:"smacs,omitempty"`  // smacs
+	ExitAcs      string   `json:"rmacs,omitempty"`  // rmacs
+	EnableAcs    string   `json:"enacs,omitempty"`  // enacs
+	KeyShfRight  string   `json:"kRIT,omitempty"`   // kRIT
+	KeyShfLeft   string   `json:"kLFT,omitempty"`   // kLFT
+	KeyShfHome   string   `json:"kHOM,omitempty"`   // kHOM
+	KeyShfEnd    string   `json:"kEND,omitempty"`   // kEND
+
+	// These are non-standard extensions to terminfo.  This includes
+	// true color support, and some additional keys.  Its kind of bizarre
+	// that shifted variants of left and right exist, but not up and down.
+	// Terminal support for these are going to vary amongst XTerm
+	// emulations, so don't depend too much on them in your application.
+
+	SetFgBg         string `json:"_setfgbg,omitempty"`    // setfgbg
+	SetFgBgRGB      string `json:"_setfgbgrgb,omitempty"` // setfgbgrgb
+	SetFgRGB        string `json:"_setfrgb,omitempty"`    // setfrgb
+	SetBgRGB        string `json:"_setbrgb,omitempty"`    // setbrgb
+	KeyShfUp        string `json:"_kscu1,omitempty"`      // shift-up
+	KeyShfDown      string `json:"_kscud1,omitempty"`     // shift-down
+	KeyCtrlUp       string `json:"_kccu1,omitempty"`      // ctrl-up
+	KeyCtrlDown     string `json:"_kccud1,omitempty"`     // ctrl-left
+	KeyCtrlRight    string `json:"_kccuf1,omitempty"`     // ctrl-right
+	KeyCtrlLeft     string `json:"_kccub1,omitempty"`     // ctrl-left
+	KeyMetaUp       string `json:"_kmcu1,omitempty"`      // meta-up
+	KeyMetaDown     string `json:"_kmcud1,omitempty"`     // meta-left
+	KeyMetaRight    string `json:"_kmcuf1,omitempty"`     // meta-right
+	KeyMetaLeft     string `json:"_kmcub1,omitempty"`     // meta-left
+	KeyAltUp        string `json:"_kacu1,omitempty"`      // alt-up
+	KeyAltDown      string `json:"_kacud1,omitempty"`     // alt-left
+	KeyAltRight     string `json:"_kacuf1,omitempty"`     // alt-right
+	KeyAltLeft      string `json:"_kacub1,omitempty"`     // alt-left
+	KeyCtrlHome     string `json:"_kchome,omitempty"`
+	KeyCtrlEnd      string `json:"_kcend,omitempty"`
+	KeyMetaHome     string `json:"_kmhome,omitempty"`
+	KeyMetaEnd      string `json:"_kmend,omitempty"`
+	KeyAltHome      string `json:"_kahome,omitempty"`
+	KeyAltEnd       string `json:"_kaend,omitempty"`
+	KeyAltShfUp     string `json:"_kascu1,omitempty"`
+	KeyAltShfDown   string `json:"_kascud1,omitempty"`
+	KeyAltShfLeft   string `json:"_kascub1,omitempty"`
+	KeyAltShfRight  string `json:"_kascuf1,omitempty"`
+	KeyMetaShfUp    string `json:"_kmscu1,omitempty"`
+	KeyMetaShfDown  string `json:"_kmscud1,omitempty"`
+	KeyMetaShfLeft  string `json:"_kmscub1,omitempty"`
+	KeyMetaShfRight string `json:"_kmscuf1,omitempty"`
+	KeyCtrlShfUp    string `json:"_kcscu1,omitempty"`
+	KeyCtrlShfDown  string `json:"_kcscud1,omitempty"`
+	KeyCtrlShfLeft  string `json:"_kcscub1,omitempty"`
+	KeyCtrlShfRight string `json:"_kcscuf1,omitempty"`
+	KeyCtrlShfHome  string `json:"_kcHOME,omitempty"`
+	KeyCtrlShfEnd   string `json:"_kcEND,omitempty"`
+	KeyAltShfHome   string `json:"_kaHOME,omitempty"`
+	KeyAltShfEnd    string `json:"_kaEND,omitempty"`
+	KeyMetaShfHome  string `json:"_kmHOME,omitempty"`
+	KeyMetaShfEnd   string `json:"_kmEND,omitempty"`
+}
+
+type stackElem struct {
+	s     string
+	i     int
+	isStr bool
+	isInt bool
+}
+
+type stack []stackElem
+
+func (st stack) Push(v string) stack {
+	e := stackElem{
+		s:     v,
+		isStr: true,
+	}
+	return append(st, e)
+}
+
+func (st stack) Pop() (string, stack) {
+	v := ""
+	if len(st) > 0 {
+		e := st[len(st)-1]
+		st = st[:len(st)-1]
+		if e.isStr {
+			v = e.s
+		} else {
+			v = strconv.Itoa(e.i)
+		}
+	}
+	return v, st
+}
+
+func (st stack) PopInt() (int, stack) {
+	if len(st) > 0 {
+		e := st[len(st)-1]
+		st = st[:len(st)-1]
+		if e.isInt {
+			return e.i, st
+		} else if e.isStr {
+			i, _ := strconv.Atoi(e.s)
+			return i, st
+		}
+	}
+	return 0, st
+}
+
+func (st stack) PopBool() (bool, stack) {
+	if len(st) > 0 {
+		e := st[len(st)-1]
+		st = st[:len(st)-1]
+		if e.isStr {
+			if e.s == "1" {
+				return true, st
+			}
+			return false, st
+		} else if e.i == 1 {
+			return true, st
+		} else {
+			return false, st
+		}
+	}
+	return false, st
+}
+
+func (st stack) PushInt(i int) stack {
+	e := stackElem{
+		i:     i,
+		isInt: true,
+	}
+	return append(st, e)
+}
+
+func (st stack) PushBool(i bool) stack {
+	if i {
+		return st.PushInt(1)
+	}
+	return st.PushInt(0)
+}
+
+func nextch(s string, index int) (byte, int) {
+	if index < len(s) {
+		return s[index], index + 1
+	}
+	return 0, index
+}
+
+// static vars
+var svars [26]string
+
+// paramsBuffer handles some persistent state for TParam.  Technically we
+// could probably dispense with this, but caching buffer arrays gives us
+// a nice little performance boost.  Furthermore, we know that TParam is
+// rarely (never?) called re-entrantly, so we can just reuse the same
+// buffers, making it thread-safe by stashing a lock.
+type paramsBuffer struct {
+	out bytes.Buffer
+	buf bytes.Buffer
+	lk  sync.Mutex
+}
+
+// Start initializes the params buffer with the initial string data.
+// It also locks the paramsBuffer.  The caller must call End() when
+// finished.
+func (pb *paramsBuffer) Start(s string) {
+	pb.lk.Lock()
+	pb.out.Reset()
+	pb.buf.Reset()
+	pb.buf.WriteString(s)
+}
+
+// End returns the final output from TParam, but it also releases the lock.
+func (pb *paramsBuffer) End() string {
+	s := pb.out.String()
+	pb.lk.Unlock()
+	return s
+}
+
+// NextCh returns the next input character to the expander.
+func (pb *paramsBuffer) NextCh() (byte, error) {
+	return pb.buf.ReadByte()
+}
+
+// PutCh "emits" (rather schedules for output) a single byte character.
+func (pb *paramsBuffer) PutCh(ch byte) {
+	pb.out.WriteByte(ch)
+}
+
+// PutString schedules a string for output.
+func (pb *paramsBuffer) PutString(s string) {
+	pb.out.WriteString(s)
+}
+
+var pb = &paramsBuffer{}
+
+// TParm takes a terminfo parameterized string, such as setaf or cup, and
+// evaluates the string, and returns the result with the parameter
+// applied.
+func (t *Terminfo) TParm(s string, p ...int) string {
+	var stk stack
+	var a, b string
+	var ai, bi int
+	var ab bool
+	var dvars [26]string
+	var params [9]int
+
+	pb.Start(s)
+
+	// make sure we always have 9 parameters -- makes it easier
+	// later to skip checks
+	for i := 0; i < len(params) && i < len(p); i++ {
+		params[i] = p[i]
+	}
+
+	nest := 0
+
+	for {
+
+		ch, err := pb.NextCh()
+		if err != nil {
+			break
+		}
+
+		if ch != '%' {
+			pb.PutCh(ch)
+			continue
+		}
+
+		ch, err = pb.NextCh()
+		if err != nil {
+			// XXX Error
+			break
+		}
+
+		switch ch {
+		case '%': // quoted %
+			pb.PutCh(ch)
+
+		case 'i': // increment both parameters (ANSI cup support)
+			params[0]++
+			params[1]++
+
+		case 'c', 's':
+			// NB: these, and 'd' below are special cased for
+			// efficiency.  They could be handled by the richer
+			// format support below, less efficiently.
+			a, stk = stk.Pop()
+			pb.PutString(a)
+
+		case 'd':
+			ai, stk = stk.PopInt()
+			pb.PutString(strconv.Itoa(ai))
+
+		case '0', '1', '2', '3', '4', 'x', 'X', 'o', ':':
+			// This is pretty suboptimal, but this is rarely used.
+			// None of the mainstream terminals use any of this,
+			// and it would surprise me if this code is ever
+			// executed outside of test cases.
+			f := "%"
+			if ch == ':' {
+				ch, _ = pb.NextCh()
+			}
+			f += string(ch)
+			for ch == '+' || ch == '-' || ch == '#' || ch == ' ' {
+				ch, _ = pb.NextCh()
+				f += string(ch)
+			}
+			for (ch >= '0' && ch <= '9') || ch == '.' {
+				ch, _ = pb.NextCh()
+				f += string(ch)
+			}
+			switch ch {
+			case 'd', 'x', 'X', 'o':
+				ai, stk = stk.PopInt()
+				pb.PutString(fmt.Sprintf(f, ai))
+			case 'c', 's':
+				a, stk = stk.Pop()
+				pb.PutString(fmt.Sprintf(f, a))
+			}
+
+		case 'p': // push parameter
+			ch, _ = pb.NextCh()
+			ai = int(ch - '1')
+			if ai >= 0 && ai < len(params) {
+				stk = stk.PushInt(params[ai])
+			} else {
+				stk = stk.PushInt(0)
+			}
+
+		case 'P': // pop & store variable
+			ch, _ = pb.NextCh()
+			if ch >= 'A' && ch <= 'Z' {
+				svars[int(ch-'A')], stk = stk.Pop()
+			} else if ch >= 'a' && ch <= 'z' {
+				dvars[int(ch-'a')], stk = stk.Pop()
+			}
+
+		case 'g': // recall & push variable
+			ch, _ = pb.NextCh()
+			if ch >= 'A' && ch <= 'Z' {
+				stk = stk.Push(svars[int(ch-'A')])
+			} else if ch >= 'a' && ch <= 'z' {
+				stk = stk.Push(dvars[int(ch-'a')])
+			}
+
+		case '\'': // push(char)
+			ch, _ = pb.NextCh()
+			pb.NextCh() // must be ' but we don't check
+			stk = stk.Push(string(ch))
+
+		case '{': // push(int)
+			ai = 0
+			ch, _ = pb.NextCh()
+			for ch >= '0' && ch <= '9' {
+				ai *= 10
+				ai += int(ch - '0')
+				ch, _ = pb.NextCh()
+			}
+			// ch must be '}' but no verification
+			stk = stk.PushInt(ai)
+
+		case 'l': // push(strlen(pop))
+			a, stk = stk.Pop()
+			stk = stk.PushInt(len(a))
+
+		case '+':
+			bi, stk = stk.PopInt()
+			ai, stk = stk.PopInt()
+			stk = stk.PushInt(ai + bi)
+
+		case '-':
+			bi, stk = stk.PopInt()
+			ai, stk = stk.PopInt()
+			stk = stk.PushInt(ai - bi)
+
+		case '*':
+			bi, stk = stk.PopInt()
+			ai, stk = stk.PopInt()
+			stk = stk.PushInt(ai * bi)
+
+		case '/':
+			bi, stk = stk.PopInt()
+			ai, stk = stk.PopInt()
+			if bi != 0 {
+				stk = stk.PushInt(ai / bi)
+			} else {
+				stk = stk.PushInt(0)
+			}
+
+		case 'm': // push(pop mod pop)
+			bi, stk = stk.PopInt()
+			ai, stk = stk.PopInt()
+			if bi != 0 {
+				stk = stk.PushInt(ai % bi)
+			} else {
+				stk = stk.PushInt(0)
+			}
+
+		case '&': // AND
+			bi, stk = stk.PopInt()
+			ai, stk = stk.PopInt()
+			stk = stk.PushInt(ai & bi)
+
+		case '|': // OR
+			bi, stk = stk.PopInt()
+			ai, stk = stk.PopInt()
+			stk = stk.PushInt(ai | bi)
+
+		case '^': // XOR
+			bi, stk = stk.PopInt()
+			ai, stk = stk.PopInt()
+			stk = stk.PushInt(ai ^ bi)
+
+		case '~': // bit complement
+			ai, stk = stk.PopInt()
+			stk = stk.PushInt(ai ^ -1)
+
+		case '!': // logical NOT
+			ai, stk = stk.PopInt()
+			stk = stk.PushBool(ai != 0)
+
+		case '=': // numeric compare or string compare
+			b, stk = stk.Pop()
+			a, stk = stk.Pop()
+			stk = stk.PushBool(a == b)
+
+		case '>': // greater than, numeric
+			bi, stk = stk.PopInt()
+			ai, stk = stk.PopInt()
+			stk = stk.PushBool(ai > bi)
+
+		case '<': // less than, numeric
+			bi, stk = stk.PopInt()
+			ai, stk = stk.PopInt()
+			stk = stk.PushBool(ai < bi)
+
+		case '?': // start conditional
+
+		case 't':
+			ab, stk = stk.PopBool()
+			if ab {
+				// just keep going
+				break
+			}
+			nest = 0
+		ifloop:
+			// this loop consumes everything until we hit our else,
+			// or the end of the conditional
+			for {
+				ch, err = pb.NextCh()
+				if err != nil {
+					break
+				}
+				if ch != '%' {
+					continue
+				}
+				ch, _ = pb.NextCh()
+				switch ch {
+				case ';':
+					if nest == 0 {
+						break ifloop
+					}
+					nest--
+				case '?':
+					nest++
+				case 'e':
+					if nest == 0 {
+						break ifloop
+					}
+				}
+			}
+
+		case 'e':
+			// if we got here, it means we didn't use the else
+			// in the 't' case above, and we should skip until
+			// the end of the conditional
+			nest = 0
+		elloop:
+			for {
+				ch, err = pb.NextCh()
+				if err != nil {
+					break
+				}
+				if ch != '%' {
+					continue
+				}
+				ch, _ = pb.NextCh()
+				switch ch {
+				case ';':
+					if nest == 0 {
+						break elloop
+					}
+					nest--
+				case '?':
+					nest++
+				}
+			}
+
+		case ';': // endif
+
+		}
+	}
+
+	return pb.End()
+}
+
+// TPuts emits the string to the writer, but expands inline padding
+// indications (of the form $<[delay]> where [delay] is msec) to
+// a suitable number of padding characters (usually null bytes) based
+// upon the supplied baud.  At high baud rates, more padding characters
+// will be inserted.  All Terminfo based strings should be emitted using
+// this function.
+func (t *Terminfo) TPuts(w io.Writer, s string, baud int) {
+	for {
+		beg := strings.Index(s, "$<")
+		if beg < 0 {
+			// Most strings don't need padding, which is good news!
+			io.WriteString(w, s)
+			return
+		}
+		io.WriteString(w, s[:beg])
+		s = s[beg+2:]
+		end := strings.Index(s, ">")
+		if end < 0 {
+			// unterminated.. just emit bytes unadulterated
+			io.WriteString(w, "$<"+s)
+			return
+		}
+		val := s[:end]
+		s = s[end+1:]
+		padus := 0
+		unit := 1000
+		dot := false
+	loop:
+		for i := range val {
+			switch val[i] {
+			case '0', '1', '2', '3', '4', '5', '6', '7', '8', '9':
+				padus *= 10
+				padus += int(val[i] - '0')
+				if dot {
+					unit *= 10
+				}
+			case '.':
+				if !dot {
+					dot = true
+				} else {
+					break loop
+				}
+			default:
+				break loop
+			}
+		}
+		cnt := int(((baud / 8) * padus) / unit)
+		for cnt > 0 {
+			io.WriteString(w, t.PadChar)
+			cnt--
+		}
+	}
+}
+
+// TGoto returns a string suitable for addressing the cursor at the given
+// row and column.  The origin 0, 0 is in the upper left corner of the screen.
+func (t *Terminfo) TGoto(col, row int) string {
+	return t.TParm(t.SetCursor, row, col)
+}
+
+// TColor returns a string corresponding to the given foreground and background
+// colors.  Either fg or bg can be set to -1 to elide.
+func (t *Terminfo) TColor(fi, bi int) string {
+	rv := ""
+	// As a special case, we map bright colors to lower versions if the
+	// color table only holds 8.  For the remaining 240 colors, the user
+	// is out of luck.  Someday we could create a mapping table, but its
+	// not worth it.
+	if t.Colors == 8 {
+		if fi > 7 && fi < 16 {
+			fi -= 8
+		}
+		if bi > 7 && bi < 16 {
+			bi -= 8
+		}
+	}
+	if t.Colors > fi && fi >= 0 {
+		rv += t.TParm(t.SetFg, fi)
+	}
+	if t.Colors > bi && bi >= 0 {
+		rv += t.TParm(t.SetBg, bi)
+	}
+	return rv
+}
+
+var (
+	dblock    sync.Mutex
+	terminfos = make(map[string]*Terminfo)
+	aliases   = make(map[string]string)
+)
+
+// AddTerminfo can be called to register a new Terminfo entry.
+func AddTerminfo(t *Terminfo) {
+	dblock.Lock()
+	terminfos[t.Name] = t
+	for _, x := range t.Aliases {
+		terminfos[x] = t
+	}
+	dblock.Unlock()
+}
+
+func loadFromFile(fname string, term string) (*Terminfo, error) {
+	var e error
+	var f io.Reader
+	if f, e = os.Open(fname); e != nil {
+		return nil, e
+	}
+	if strings.HasSuffix(fname, ".gz") {
+		if f, e = gzip.NewReader(f); e != nil {
+			return nil, e
+		}
+	}
+	d := json.NewDecoder(f)
+	for {
+		t := &Terminfo{}
+		if e := d.Decode(t); e != nil {
+			if e == io.EOF {
+				return nil, ErrTermNotFound
+			}
+			return nil, e
+		}
+		if t.SetCursor == "" {
+			// This must be an alias record, return it.
+			return t, nil
+		}
+		if t.Name == term {
+			return t, nil
+		}
+		for _, a := range t.Aliases {
+			if a == term {
+				return t, nil
+			}
+		}
+	}
+}
+
+// LookupTerminfo attempts to find a definition for the named $TERM.
+// It first looks in the builtin database, which should cover just about
+// everyone.  If it can't find one there, then it will attempt to read
+// one from the JSON file located in either $TCELLDB, $HOME/.tcelldb
+// or in this package's source directory as database.json).
+func LookupTerminfo(name string) (*Terminfo, error) {
+	if name == "" {
+		// else on windows: index out of bounds
+		// on the name[0] reference below
+		return nil, ErrTermNotFound
+	}
+
+	dblock.Lock()
+	t := terminfos[name]
+	dblock.Unlock()
+
+	if t == nil {
+
+		var files []string
+		letter := fmt.Sprintf("%02x", name[0])
+		gzfile := path.Join(letter, name+".gz")
+		jsfile := path.Join(letter, name)
+
+		// Build up the search path.  Old versions of tcell used a
+		// single database file, whereas the new ones locate them
+		// in JSON (optionally compressed) files.
+		//
+		// The search path looks like:
+		//
+		// $TCELLDB/x/xterm.gz
+		// $TCELLDB/x/xterm
+		// $TCELLDB
+		// $HOME/.tcelldb/x/xterm.gz
+		// $HOME/.tcelldb/x/xterm
+		// $HOME/.tcelldb
+		// $GOPATH/terminfo/database/x/xterm.gz
+		// $GOPATH/terminfo/database/x/xterm
+		//
+		if pth := os.Getenv("TCELLDB"); pth != "" {
+			files = append(files, path.Join(pth, gzfile))
+			files = append(files, path.Join(pth, jsfile))
+			files = append(files, pth)
+		}
+		if pth := os.Getenv("HOME"); pth != "" {
+			pth = path.Join(pth, ".tcelldb")
+			files = append(files, path.Join(pth, gzfile))
+			files = append(files, path.Join(pth, jsfile))
+			files = append(files, pth)
+		}
+
+		for _, pth := range strings.Split(os.Getenv("GOPATH"), string(os.PathListSeparator)) {
+			pth = path.Join(pth, "src", "github.com", "gdamore", "tcell", "terminfo", "database")
+			files = append(files, path.Join(pth, gzfile))
+			files = append(files, path.Join(pth, jsfile))
+		}
+
+		for _, fname := range files {
+			t, _ = loadFromFile(fname, name)
+			if t != nil {
+				break
+			}
+		}
+		if t != nil {
+			if t.Name != name {
+				// Check for a database loop (no infinite
+				// recursion).
+				dblock.Lock()
+				if aliases[name] != "" {
+					dblock.Unlock()
+					return nil, ErrTermNotFound
+				}
+				aliases[name] = t.Name
+				dblock.Unlock()
+				return LookupTerminfo(t.Name)
+			}
+			dblock.Lock()
+			terminfos[name] = t
+			dblock.Unlock()
+		}
+	}
+	if t == nil {
+		return nil, ErrTermNotFound
+	}
+	return t, nil
+}

cmd/micro/terminfo/terminfo_test.go

@@ -0,0 +1,194 @@
+// Copyright 2016 The TCell Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use file except in compliance with the License.
+// You may obtain a copy of the license at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package terminfo
+
+import (
+	"bytes"
+	"os"
+	"testing"
+
+	. "github.com/smartystreets/goconvey/convey"
+)
+
+// This terminfo entry is a stripped down version from
+// xterm-256color, but I've added some of my own entries.
+var testTerminfo = &Terminfo{
+	Name:      "simulation_test",
+	Columns:   80,
+	Lines:     24,
+	Colors:    256,
+	Bell:      "\a",
+	Blink:     "\x1b2ms$<2>",
+	Reverse:   "\x1b[7m",
+	SetFg:     "\x1b[%?%p1%{8}%<%t3%p1%d%e%p1%{16}%<%t9%p1%{8}%-%d%e38;5;%p1%d%;m",
+	SetBg:     "\x1b[%?%p1%{8}%<%t4%p1%d%e%p1%{16}%<%t10%p1%{8}%-%d%e48;5;%p1%d%;m",
+	AltChars:  "``aaffggiijjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~",
+	Mouse:     "\x1b[M",
+	MouseMode: "%?%p1%{1}%=%t%'h'%Pa%e%'l'%Pa%;\x1b[?1000%ga%c\x1b[?1003%ga%c\x1b[?1006%ga%c",
+	SetCursor: "\x1b[%i%p1%d;%p2%dH",
+	PadChar:   "\x00",
+}
+
+func TestTerminfo(t *testing.T) {
+
+	ti := testTerminfo
+
+	Convey("Terminfo parameter processing", t, func() {
+		// This tests %i, and basic parameter strings too
+		Convey("TGoto works", func() {
+			s := ti.TGoto(7, 9)
+			So(s, ShouldEqual, "\x1b[10;8H")
+		})
+
+		// This tests some conditionals
+		Convey("TParm extended formats work", func() {
+			s := ti.TParm("A[%p1%2.2X]B", 47)
+			So(s, ShouldEqual, "A[2F]B")
+		})
+
+		// This tests some conditionals
+		Convey("TParm colors work", func() {
+			s := ti.TParm(ti.SetFg, 7)
+			So(s, ShouldEqual, "\x1b[37m")
+
+			s = ti.TParm(ti.SetFg, 15)
+			So(s, ShouldEqual, "\x1b[97m")
+
+			s = ti.TParm(ti.SetFg, 200)
+			So(s, ShouldEqual, "\x1b[38;5;200m")
+		})
+
+		// This tests variables
+		Convey("TParm mouse mode works", func() {
+			s := ti.TParm(ti.MouseMode, 1)
+			So(s, ShouldEqual, "\x1b[?1000h\x1b[?1003h\x1b[?1006h")
+			s = ti.TParm(ti.MouseMode, 0)
+			So(s, ShouldEqual, "\x1b[?1000l\x1b[?1003l\x1b[?1006l")
+		})
+
+	})
+
+	Convey("Terminfo delay handling", t, func() {
+
+		Convey("19200 baud", func() {
+			buf := bytes.NewBuffer(nil)
+			ti.TPuts(buf, ti.Blink, 19200)
+			s := string(buf.Bytes())
+			So(s, ShouldEqual, "\x1b2ms\x00\x00\x00\x00")
+		})
+
+		Convey("50 baud", func() {
+			buf := bytes.NewBuffer(nil)
+			ti.TPuts(buf, ti.Blink, 50)
+			s := string(buf.Bytes())
+			So(s, ShouldEqual, "\x1b2ms")
+		})
+	})
+}
+
+func TestTerminfoDatabase(t *testing.T) {
+
+	Convey("Database Lookups work", t, func() {
+		Convey("Basic lookup works", func() {
+			os.Setenv("TCELLDB", "testdata/test1")
+			ti, err := LookupTerminfo("test1")
+			So(err, ShouldBeNil)
+			So(ti, ShouldNotBeNil)
+			So(ti.Columns, ShouldEqual, 80)
+
+			ti, err = LookupTerminfo("alias1")
+			So(err, ShouldBeNil)
+			So(ti, ShouldNotBeNil)
+			So(ti.Columns, ShouldEqual, 80)
+
+			os.Setenv("TCELLDB", "testdata")
+			ti, err = LookupTerminfo("test2")
+			So(err, ShouldBeNil)
+			So(ti, ShouldNotBeNil)
+			So(ti.Columns, ShouldEqual, 80)
+			So(len(ti.Aliases), ShouldEqual, 1)
+			So(ti.Aliases[0], ShouldEqual, "alias2")
+		})
+
+		Convey("Incorrect primary name works", func() {
+			os.Setenv("TCELLDB", "testdata")
+			ti, err := LookupTerminfo("test3")
+			So(err, ShouldNotBeNil)
+			So(ti, ShouldBeNil)
+		})
+
+		Convey("Loops fail", func() {
+			os.Setenv("TCELLDB", "testdata")
+			ti, err := LookupTerminfo("loop1")
+			So(ti, ShouldBeNil)
+			So(err, ShouldNotBeNil)
+		})
+
+		Convey("Gzip database works", func() {
+			os.Setenv("TCELLDB", "testdata")
+			ti, err := LookupTerminfo("test-gzip")
+			So(err, ShouldBeNil)
+			So(ti, ShouldNotBeNil)
+			So(ti.Columns, ShouldEqual, 80)
+		})
+
+		Convey("Gzip alias lookup works", func() {
+			os.Setenv("TCELLDB", "testdata")
+			ti, err := LookupTerminfo("alias-gzip")
+			So(err, ShouldBeNil)
+			So(ti, ShouldNotBeNil)
+			So(ti.Columns, ShouldEqual, 80)
+		})
+
+		Convey("Broken alias works", func() {
+			os.Setenv("TCELLDB", "testdata")
+			ti, err := LookupTerminfo("alias-none")
+			So(err, ShouldNotBeNil)
+			So(ti, ShouldBeNil)
+		})
+
+		Convey("Combined database works", func() {
+			os.Setenv("TCELLDB", "testdata/combined")
+			ti, err := LookupTerminfo("combined2")
+			So(err, ShouldBeNil)
+			So(ti, ShouldNotBeNil)
+			So(ti.Lines, ShouldEqual, 102)
+
+			ti, err = LookupTerminfo("alias-comb1")
+			So(err, ShouldBeNil)
+			So(ti, ShouldNotBeNil)
+			So(ti.Lines, ShouldEqual, 101)
+
+			ti, err = LookupTerminfo("combined3")
+			So(err, ShouldBeNil)
+			So(ti, ShouldNotBeNil)
+			So(ti.Lines, ShouldEqual, 103)
+
+			ti, err = LookupTerminfo("combined1")
+			So(err, ShouldBeNil)
+			So(ti, ShouldNotBeNil)
+			So(ti.Lines, ShouldEqual, 101)
+		})
+	})
+}
+
+func BenchmarkSetFgBg(b *testing.B) {
+	ti := testTerminfo
+
+	for i := 0; i < b.N; i++ {
+		ti.TParm(ti.SetFg, 100, 200)
+		ti.TParm(ti.SetBg, 100, 200)
+	}
+}

cmd/micro/util.go

@@ -1,8 +1,8 @@
 package main
 
 import (
-	"bytes"
 	"os"
+	"os/user"
 	"path/filepath"
 	"reflect"
 	"runtime"
@@ -23,6 +23,54 @@ func Count(s string) int {
 	return utf8.RuneCountInString(s)
 }
 
+// Convert byte array to rune array
+func toRunes(b []byte) []rune {
+	runes := make([]rune, 0, utf8.RuneCount(b))
+
+	for len(b) > 0 {
+		r, size := utf8.DecodeRune(b)
+		runes = append(runes, r)
+
+		b = b[size:]
+	}
+
+	return runes
+}
+
+func sliceStart(slc []byte, index int) []byte {
+	len := len(slc)
+	i := 0
+	totalSize := 0
+	for totalSize < len {
+		if i >= index {
+			return slc[totalSize:]
+		}
+
+		_, size := utf8.DecodeRune(slc[totalSize:])
+		totalSize += size
+		i++
+	}
+
+	return slc[totalSize:]
+}
+
+func sliceEnd(slc []byte, index int) []byte {
+	len := len(slc)
+	i := 0
+	totalSize := 0
+	for totalSize < len {
+		if i >= index {
+			return slc[:totalSize]
+		}
+
+		_, size := utf8.DecodeRune(slc[totalSize:])
+		totalSize += size
+		i++
+	}
+
+	return slc[:totalSize]
+}
+
 // NumOccurrences counts the number of occurrences of a byte in a string
 func NumOccurrences(s string, c byte) int {
 	var n int
@@ -36,11 +84,7 @@ func NumOccurrences(s string, c byte) int {
 
 // Spaces returns a string with n spaces
 func Spaces(n int) string {
-	var str string
-	for i := 0; i < n; i++ {
-		str += " "
-	}
-	return str
+	return strings.Repeat(" ", n)
 }
 
 // Min takes the min of two ints
@@ -59,6 +103,7 @@ func Max(a, b int) int {
 	return b
 }
 
+// FSize gets the size of a file
 func FSize(f *os.File) int64 {
 	fi, _ := f.Stat()
 	// get the size
@@ -133,7 +178,7 @@ func GetLeadingWhitespace(str string) string {
 }
 
 // IsSpaces checks if a given string is only spaces
-func IsSpaces(str string) bool {
+func IsSpaces(str []byte) bool {
 	for _, c := range str {
 		if c != ' ' {
 			return false
@@ -249,6 +294,7 @@ func lcs(a, b string) string {
 	return lcs
 }
 
+// CommonSubstring gets a common substring among the inputs
 func CommonSubstring(arr ...string) string {
 	commonStr := arr[0]
 
@@ -277,93 +323,44 @@ func ShortFuncName(i interface{}) string {
 	return strings.TrimPrefix(runtime.FuncForPC(reflect.ValueOf(i).Pointer()).Name(), "main.(*View).")
 }
 
-// SplitCommandArgs separates multiple command arguments which may be quoted.
-// The returned slice contains at least one string
-func SplitCommandArgs(input string) []string {
-	var result []string
-	var curQuote *bytes.Buffer
-
-	curArg := new(bytes.Buffer)
-	escape := false
-
-	finishQuote := func() {
-		if curQuote == nil {
-			return
-		}
-		str := curQuote.String()
-		if unquoted, err := strconv.Unquote(str); err == nil {
-			str = unquoted
-		}
-		curArg.WriteString(str)
-		curQuote = nil
+// ReplaceHome takes a path as input and replaces ~ at the start of the path with the user's
+// home directory. Does nothing if the path does not start with '~'.
+func ReplaceHome(path string) string {
+	if !strings.HasPrefix(path, "~") {
+		return path
 	}
 
-	appendResult := func() {
-		finishQuote()
-		escape = false
+	var userData *user.User
+	var err error
 
-		str := curArg.String()
-		result = append(result, str)
-		curArg.Reset()
-	}
-
-	for _, r := range input {
-		if r == ' ' && curQuote == nil {
-			appendResult()
-		} else {
-			runeHandled := false
-			appendRuneToBuff := func() {
-				if curQuote != nil {
-					curQuote.WriteRune(r)
-				} else {
-					curArg.WriteRune(r)
-				}
-				runeHandled = true
-			}
-
-			if r == '"' && curQuote == nil {
-				curQuote = new(bytes.Buffer)
-				appendRuneToBuff()
+	homeString := strings.Split(path, "/")[0]
+	if homeString == "~" {
+		userData, err = user.Current()
+		if err != nil {
+			messenger.Error("Could not find user: ", err)
+		}
+	} else {
+		userData, err = user.Lookup(homeString[1:])
+		if err != nil {
+			if messenger != nil {
+				messenger.Error("Could not find user: ", err)
 			} else {
-				if curQuote != nil && !escape {
-					if r == '"' {
-						appendRuneToBuff()
-						finishQuote()
-					} else if r == '\\' {
-						appendRuneToBuff()
-						escape = true
-						continue
-					}
-				}
+				TermMessage("Could not find user: ", err)
 			}
-			if !runeHandled {
-				appendRuneToBuff()
-			}
-		}
-
-		escape = false
-	}
-	appendResult()
-	return result
-}
-
-// JoinCommandArgs joins multiple command arguments and quote the strings if needed.
-func JoinCommandArgs(args ...string) string {
-	buf := new(bytes.Buffer)
-	first := true
-	for _, arg := range args {
-		if first {
-			first = false
-		} else {
-			buf.WriteRune(' ')
-		}
-		quoted := strconv.Quote(arg)
-		if quoted[1:len(quoted)-1] != arg || strings.ContainsRune(arg, ' ') {
-			buf.WriteString(quoted)
-		} else {
-			buf.WriteString(arg)
+			return ""
 		}
 	}
 
-	return buf.String()
+	home := userData.HomeDir
+
+	return strings.Replace(path, homeString, home, 1)
+}
+
+// GetPath returns a filename without everything following a `:`
+// This is used for opening files like util.go:10:5 to specify a line and column
+func GetPath(path string) string {
+	if strings.Contains(path, ":") {
+		path = strings.Split(path, ":")[0]
+	}
+	return path
 }

cmd/micro/util_test.go

@@ -1,7 +1,6 @@
 package main
 
 import (
-	"reflect"
 	"testing"
 )
 
@@ -67,56 +66,6 @@ func TestIsWordChar(t *testing.T) {
 	}
 }
 
-func TestJoinAndSplitCommandArgs(t *testing.T) {
-	tests := []struct {
-		Query  []string
-		Wanted string
-	}{
-		{[]string{`test case`}, `"test case"`},
-		{[]string{`quote "test"`}, `"quote \"test\""`},
-		{[]string{`slash\\\ test`}, `"slash\\\\\\ test"`},
-		{[]string{`path 1`, `path\" 2`}, `"path 1" "path\\\" 2"`},
-		{[]string{`foo`}, `foo`},
-		{[]string{`foo\"bar`}, `"foo\\\"bar"`},
-		{[]string{``}, ``},
-		{[]string{`"`}, `"\""`},
-		{[]string{`a`, ``}, `a `},
-		{[]string{``, ``, ``, ``}, `   `},
-		{[]string{"\n"}, `"\n"`},
-		{[]string{"foo\tbar"}, `"foo\tbar"`},
-	}
-
-	for i, test := range tests {
-		if result := JoinCommandArgs(test.Query...); test.Wanted != result {
-			t.Errorf("JoinCommandArgs failed at Test %d\nGot: %q", i, result)
-		}
-
-		if result := SplitCommandArgs(test.Wanted); !reflect.DeepEqual(test.Query, result) {
-			t.Errorf("SplitCommandArgs failed at Test %d\nGot: `%q`", i, result)
-		}
-	}
-
-	splitTests := []struct {
-		Query  string
-		Wanted []string
-	}{
-		{`"hallo""Welt"`, []string{`halloWelt`}},
-		{`"hallo" "Welt"`, []string{`hallo`, `Welt`}},
-		{`\"`, []string{`\"`}},
-		{`"foo`, []string{`"foo`}},
-		{`"foo"`, []string{`foo`}},
-		{`"\"`, []string{`"\"`}},
-		{`"C:\\"foo.txt`, []string{`C:\foo.txt`}},
-		{`"\n"new"\n"line`, []string{"\nnew\nline"}},
-	}
-
-	for i, test := range splitTests {
-		if result := SplitCommandArgs(test.Query); !reflect.DeepEqual(test.Wanted, result) {
-			t.Errorf("SplitCommandArgs failed at Split-Test %d\nGot: `%q`", i, result)
-		}
-	}
-}
-
 func TestStringWidth(t *testing.T) {
 	tabsize := 4
 	if w := StringWidth("1\t2", tabsize); w != 5 {

cmd/micro/view.go

@@ -1,19 +1,20 @@
 package main
 
 import (
-	"os"
+	"fmt"
+	"reflect"
 	"strconv"
 	"strings"
 	"time"
 
-	"github.com/mitchellh/go-homedir"
 	"github.com/zyedidia/tcell"
 )
 
+// The ViewType defines what kind of view this is
 type ViewType struct {
-	kind     int
-	readonly bool // The file cannot be edited
-	scratch  bool // The file cannot be saved
+	Kind     int
+	Readonly bool // The file cannot be edited
+	Scratch  bool // The file cannot be saved
 }
 
 var (
@@ -21,6 +22,8 @@ var (
 	vtHelp    = ViewType{1, true, true}
 	vtLog     = ViewType{2, true, true}
 	vtScratch = ViewType{3, false, true}
+	vtRaw     = ViewType{4, true, true}
+	vtTerm    = ViewType{5, true, true}
 )
 
 // The View struct stores information about a view into a buffer.
@@ -62,7 +65,7 @@ type View struct {
 	// The buffer
 	Buf *Buffer
 	// The statusline
-	sline Statusline
+	sline *Statusline
 
 	// Since tcell doesn't differentiate between a mouse release event
 	// and a mouse move event with no keys pressed, we need to keep
@@ -70,9 +73,12 @@ type View struct {
 	// mouse release events
 	mouseReleased bool
 
+	// We need to keep track of insert key press toggle
+	isOverwriteMode bool
 	// This stores when the last click was
 	// This is useful for detecting double and triple clicks
 	lastClickTime time.Time
+	lastLoc       Loc
 
 	// lastCutTime stores when the last ctrl+k was issued.
 	// It is used for clearing the clipboard to replace it with fresh cut lines.
@@ -88,9 +94,16 @@ type View struct {
 	// Same here, just to keep track for mouse move events
 	tripleClick bool
 
+	// The cellview used for displaying and syntax highlighting
 	cellview *CellView
 
 	splitNode *LeafNode
+
+	// The scrollbar
+	scrollbar *ScrollBar
+
+	// Virtual terminal
+	term *Terminal
 }
 
 // NewView returns a new fullscreen view
@@ -116,7 +129,11 @@ func NewViewWidthHeight(buf *Buffer, w, h int) *View {
 
 	v.messages = make(map[string][]GutterMessage)
 
-	v.sline = Statusline{
+	v.sline = &Statusline{
+		view: v,
+	}
+
+	v.scrollbar = &ScrollBar{
 		view: v,
 	}
 
@@ -124,6 +141,8 @@ func NewViewWidthHeight(buf *Buffer, w, h int) *View {
 		v.Height--
 	}
 
+	v.term = new(Terminal)
+
 	for pl := range loadedPlugins {
 		_, err := Call(pl+".onViewOpen", v)
 		if err != nil && !strings.HasPrefix(err.Error(), "function does not exist") {
@@ -144,6 +163,24 @@ func (v *View) ToggleStatusLine() {
 	}
 }
 
+// StartTerminal execs a command in this view
+func (v *View) StartTerminal(execCmd []string, wait bool, getOutput bool, luaCallback string) error {
+	err := v.term.Start(execCmd, v, getOutput)
+	v.term.wait = wait
+	v.term.callback = luaCallback
+	if err == nil {
+		v.term.Resize(v.Width, v.Height)
+		v.Type = vtTerm
+	}
+	return err
+}
+
+// CloseTerminal shuts down the tty running in this view
+// and returns it to the default view type
+func (v *View) CloseTerminal() {
+	v.term.Stop()
+}
+
 // ToggleTabbar creates an extra row for the tabbar if necessary
 func (v *View) ToggleTabbar() {
 	if len(tabs) > 1 {
@@ -169,7 +206,7 @@ func (v *View) paste(clip string) {
 	}
 	clip = strings.Replace(clip, "\n", "\n"+leadingWS, -1)
 	v.Buf.Insert(v.Cursor.Loc, clip)
-	v.Cursor.Loc = v.Cursor.Loc.Move(Count(clip), v.Buf)
+	// v.Cursor.Loc = v.Cursor.Loc.Move(Count(clip), v.Buf)
 	v.freshClip = false
 	messenger.Message("Pasted clipboard")
 }
@@ -198,7 +235,7 @@ func (v *View) ScrollDown(n int) {
 // If there are unsaved changes, the user will be asked if the view can be closed
 // causing them to lose the unsaved changes
 func (v *View) CanClose() bool {
-	if v.Type == vtDefault && v.Buf.IsModified {
+	if v.Type == vtDefault && v.Buf.Modified() {
 		var choice bool
 		var canceled bool
 		if v.Buf.Settings["autosave"].(bool) {
@@ -210,15 +247,12 @@ func (v *View) CanClose() bool {
 			//if char == 'y' {
 			if choice {
 				v.Save(true)
-				return true
-			} else {
-				return true
 			}
+		} else {
+			return false
 		}
-	} else {
-		return true
 	}
-	return false
+	return true
 }
 
 // OpenBuffer opens a new buffer in this view.
@@ -238,30 +272,21 @@ func (v *View) OpenBuffer(buf *Buffer) {
 	// Set mouseReleased to true because we assume the mouse is not being pressed when
 	// the editor is opened
 	v.mouseReleased = true
+	// Set isOverwriteMode to false, because we assume we are in the default mode when editor
+	// is opened
+	v.isOverwriteMode = false
 	v.lastClickTime = time.Time{}
+
+	GlobalPluginCall("onBufferOpen", v.Buf)
+	GlobalPluginCall("onViewOpen", v)
 }
 
 // Open opens the given file in the view
-func (v *View) Open(filename string) {
-	home, _ := homedir.Dir()
-	filename = strings.Replace(filename, "~", home, 1)
-	file, err := os.Open(filename)
-	fileInfo, _ := os.Stat(filename)
-
-	if err == nil && fileInfo.IsDir() {
-		messenger.Error(filename, " is a directory")
-		return
-	}
-
-	defer file.Close()
-
-	var buf *Buffer
+func (v *View) Open(path string) {
+	buf, err := NewBufferFromFile(path)
 	if err != nil {
-		messenger.Message(err.Error())
-		// File does not exist -- create an empty buffer with that name
-		buf = NewBufferFromString("", filename)
-	} else {
-		buf = NewBuffer(file, FSize(file), filename)
+		messenger.Error(err)
+		return
 	}
 	v.OpenBuffer(buf)
 }
@@ -285,7 +310,7 @@ func (v *View) ReOpen() {
 // HSplit opens a horizontal split with the given buffer
 func (v *View) HSplit(buf *Buffer) {
 	i := 0
-	if v.Buf.Settings["splitBottom"].(bool) {
+	if v.Buf.Settings["splitbottom"].(bool) {
 		i = 1
 	}
 	v.splitNode.HSplit(buf, v.Num+i)
@@ -294,7 +319,7 @@ func (v *View) HSplit(buf *Buffer) {
 // VSplit opens a vertical split with the given buffer
 func (v *View) VSplit(buf *Buffer) {
 	i := 0
-	if v.Buf.Settings["splitRight"].(bool) {
+	if v.Buf.Settings["splitright"].(bool) {
 		i = 1
 	}
 	v.splitNode.VSplit(buf, v.Num+i)
@@ -355,6 +380,10 @@ func (v *View) GetSoftWrapLocation(vx, vy int) (int, int) {
 	return 0, 0
 }
 
+// Bottomline returns the line number of the lowest line in the view
+// You might think that this is obviously just v.Topline + v.Height
+// but if softwrap is enabled things get complicated since one buffer
+// line can take up multiple lines in the view
 func (v *View) Bottomline() int {
 	if !v.Buf.Settings["softwrap"].(bool) {
 		return v.Topline + v.Height
@@ -407,7 +436,7 @@ func (v *View) Relocate() bool {
 	if cy > v.Topline+height-1-scrollmargin && cy < v.Buf.NumLines-scrollmargin {
 		v.Topline = cy - height + 1 + scrollmargin
 		ret = true
-	} else if cy >= v.Buf.NumLines-scrollmargin && cy > height {
+	} else if cy >= v.Buf.NumLines-scrollmargin && cy >= height {
 		v.Topline = v.Buf.NumLines - height
 		ret = true
 	}
@@ -426,6 +455,31 @@ func (v *View) Relocate() bool {
 	return ret
 }
 
+// GetMouseClickLocation gets the location in the buffer from a mouse click
+// on the screen
+func (v *View) GetMouseClickLocation(x, y int) (int, int) {
+	x -= v.lineNumOffset - v.leftCol + v.x
+	y += v.Topline - v.y
+
+	if y-v.Topline > v.Height-1 {
+		v.ScrollDown(1)
+		y = v.Height + v.Topline - 1
+	}
+	if y < 0 {
+		y = 0
+	}
+	if x < 0 {
+		x = 0
+	}
+
+	newX, newY := v.GetSoftWrapLocation(x, y)
+	if newX > Count(v.Buf.Line(newY)) {
+		newX = Count(v.Buf.Line(newY))
+	}
+
+	return newX, newY
+}
+
 // MoveToMouseClick moves the cursor to location x, y assuming x, y were given
 // by a mouse click
 func (v *View) MoveToMouseClick(x, y int) {
@@ -441,7 +495,6 @@ func (v *View) MoveToMouseClick(x, y int) {
 	}
 
 	x, y = v.GetSoftWrapLocation(x, y)
-	// x = v.Cursor.GetCharPosInLine(y, x)
 	if x > Count(v.Buf.Line(y)) {
 		x = Count(v.Buf.Line(y))
 	}
@@ -450,8 +503,69 @@ func (v *View) MoveToMouseClick(x, y int) {
 	v.Cursor.LastVisualX = v.Cursor.GetVisualX()
 }
 
+// Execute actions executes the supplied actions
+func (v *View) ExecuteActions(actions []func(*View, bool) bool) bool {
+	relocate := false
+	readonlyBindingsList := []string{"Delete", "Insert", "Backspace", "Cut", "Play", "Paste", "Move", "Add", "DuplicateLine", "Macro"}
+	for _, action := range actions {
+		readonlyBindingsResult := false
+		funcName := ShortFuncName(action)
+		curv := CurView()
+		if curv.Type.Readonly == true {
+			// check for readonly and if true only let key bindings get called if they do not change the contents.
+			for _, readonlyBindings := range readonlyBindingsList {
+				if strings.Contains(funcName, readonlyBindings) {
+					readonlyBindingsResult = true
+				}
+			}
+		}
+		if !readonlyBindingsResult {
+			// call the key binding
+			relocate = action(curv, true) || relocate
+			// Macro
+			if funcName != "ToggleMacro" && funcName != "PlayMacro" {
+				if recordingMacro {
+					curMacro = append(curMacro, action)
+				}
+			}
+		}
+	}
+
+	return relocate
+}
+
+// SetCursor sets the view's and buffer's cursor
+func (v *View) SetCursor(c *Cursor) bool {
+	if c == nil {
+		return false
+	}
+	v.Cursor = c
+	v.Buf.curCursor = c.Num
+
+	return true
+}
+
 // HandleEvent handles an event passed by the main loop
 func (v *View) HandleEvent(event tcell.Event) {
+	if v.Type == vtTerm {
+		v.term.HandleEvent(event)
+		return
+	}
+
+	if v.Type == vtRaw {
+		v.Buf.Insert(v.Cursor.Loc, reflect.TypeOf(event).String()[7:])
+		v.Buf.Insert(v.Cursor.Loc, fmt.Sprintf(": %q\n", event.EscSeq()))
+
+		switch e := event.(type) {
+		case *tcell.EventKey:
+			if e.Key() == tcell.KeyCtrlQ {
+				v.Quit(true)
+			}
+		}
+
+		return
+	}
+
 	// This bool determines whether the view is relocated at the end of the function
 	// By default it's true because most events should cause a relocate
 	relocate := true
@@ -459,149 +573,138 @@ func (v *View) HandleEvent(event tcell.Event) {
 	v.Buf.CheckModTime()
 
 	switch e := event.(type) {
-	case *tcell.EventKey:
-		// Check first if input is a key binding, if it is we 'eat' the input and don't insert a rune
-		isBinding := false
-		readonlyBindingsList := []string{"Delete", "Insert", "Backspace", "Cut", "Play", "Paste", "Move", "Add", "DuplicateLine", "Macro"}
-		if e.Key() != tcell.KeyRune || e.Modifiers() != 0 {
-			for key, actions := range bindings {
-				if e.Key() == key.keyCode {
-					if e.Key() == tcell.KeyRune {
-						if e.Rune() != key.r {
-							continue
+	case *tcell.EventRaw:
+		for key, actions := range bindings {
+			if key.keyCode == -1 {
+				if e.EscSeq() == key.escape {
+					for _, c := range v.Buf.cursors {
+						ok := v.SetCursor(c)
+						if !ok {
+							break
 						}
-					}
-					if e.Modifiers() == key.modifiers {
 						relocate = false
-						isBinding = true
-						for _, action := range actions {
-							readonlyBindingsResult := false
-							funcName := ShortFuncName(action)
-							if v.Type.readonly == true {
-								// check for readonly and if true only let key bindings get called if they do not change the contents.
-								for _, readonlyBindings := range readonlyBindingsList {
-									if strings.Contains(funcName, readonlyBindings) {
-										readonlyBindingsResult = true
-									}
-								}
-							}
-							if !readonlyBindingsResult {
-								// call the key binding
-								relocate = action(v, true) || relocate
-								// Macro
-								if funcName != "ToggleMacro" && funcName != "PlayMacro" {
-									if recordingMacro {
-										curMacro = append(curMacro, action)
-									}
-								}
-							}
-						}
-						break
+						relocate = v.ExecuteActions(actions) || relocate
 					}
+					v.SetCursor(&v.Buf.Cursor)
+					v.Buf.MergeCursors()
+					break
 				}
 			}
 		}
-		if !isBinding && e.Key() == tcell.KeyRune {
-			// Check viewtype if readonly don't insert a rune (readonly help and log view etc.)
-			if v.Type.readonly == false {
-				// Insert a character
-				if v.Cursor.HasSelection() {
-					v.Cursor.DeleteSelection()
-					v.Cursor.ResetSelection()
-				}
-				v.Buf.Insert(v.Cursor.Loc, string(e.Rune()))
-				v.Cursor.Right()
-
-				for pl := range loadedPlugins {
-					_, err := Call(pl+".onRune", string(e.Rune()), v)
-					if err != nil && !strings.HasPrefix(err.Error(), "function does not exist") {
-						TermMessage(err)
+	case *tcell.EventKey:
+		// Check first if input is a key binding, if it is we 'eat' the input and don't insert a rune
+		isBinding := false
+		for key, actions := range bindings {
+			if e.Key() == key.keyCode {
+				if e.Key() == tcell.KeyRune {
+					if e.Rune() != key.r {
+						continue
 					}
 				}
-
-				if recordingMacro {
-					curMacro = append(curMacro, e.Rune())
+				if e.Modifiers() == key.modifiers {
+					for _, c := range v.Buf.cursors {
+						ok := v.SetCursor(c)
+						if !ok {
+							break
+						}
+						relocate = false
+						isBinding = true
+						relocate = v.ExecuteActions(actions) || relocate
+					}
+					v.SetCursor(&v.Buf.Cursor)
+					v.Buf.MergeCursors()
+					break
 				}
 			}
 		}
+
+		if !isBinding && e.Key() == tcell.KeyRune {
+			// Check viewtype if readonly don't insert a rune (readonly help and log view etc.)
+			if v.Type.Readonly == false {
+				for _, c := range v.Buf.cursors {
+					v.SetCursor(c)
+
+					// Insert a character
+					if v.Cursor.HasSelection() {
+						v.Cursor.DeleteSelection()
+						v.Cursor.ResetSelection()
+					}
+
+					if v.isOverwriteMode {
+						next := v.Cursor.Loc
+						next.X++
+						v.Buf.Replace(v.Cursor.Loc, next, string(e.Rune()))
+					} else {
+						v.Buf.Insert(v.Cursor.Loc, string(e.Rune()))
+					}
+
+					for pl := range loadedPlugins {
+						_, err := Call(pl+".onRune", string(e.Rune()), v)
+						if err != nil && !strings.HasPrefix(err.Error(), "function does not exist") {
+							TermMessage(err)
+						}
+					}
+
+					if recordingMacro {
+						curMacro = append(curMacro, e.Rune())
+					}
+				}
+				v.SetCursor(&v.Buf.Cursor)
+			}
+		}
 	case *tcell.EventPaste:
 		// Check viewtype if readonly don't paste (readonly help and log view etc.)
-		if v.Type.readonly == false {
+		if v.Type.Readonly == false {
 			if !PreActionCall("Paste", v) {
 				break
 			}
 
-			v.paste(e.Text())
+			for _, c := range v.Buf.cursors {
+				v.SetCursor(c)
+				v.paste(e.Text())
+			}
+			v.SetCursor(&v.Buf.Cursor)
 
 			PostActionCall("Paste", v)
 		}
 	case *tcell.EventMouse:
-		x, y := e.Position()
-		x -= v.lineNumOffset - v.leftCol + v.x
-		y += v.Topline - v.y
 		// Don't relocate for mouse events
 		relocate = false
 
 		button := e.Buttons()
 
-		switch button {
-		case tcell.Button1:
-			// Left click
-			if v.mouseReleased {
-				v.MoveToMouseClick(x, y)
-				if time.Since(v.lastClickTime)/time.Millisecond < doubleClickThreshold {
-					if v.doubleClick {
-						// Triple click
-						v.lastClickTime = time.Now()
-
-						v.tripleClick = true
-						v.doubleClick = false
-
-						v.Cursor.SelectLine()
-						v.Cursor.CopySelection("primary")
-					} else {
-						// Double click
-						v.lastClickTime = time.Now()
-
-						v.doubleClick = true
-						v.tripleClick = false
-
-						v.Cursor.SelectWord()
-						v.Cursor.CopySelection("primary")
+		for key, actions := range bindings {
+			if button == key.buttons && e.Modifiers() == key.modifiers {
+				for _, c := range v.Buf.cursors {
+					ok := v.SetCursor(c)
+					if !ok {
+						break
 					}
-				} else {
-					v.doubleClick = false
-					v.tripleClick = false
-					v.lastClickTime = time.Now()
+					relocate = v.ExecuteActions(actions) || relocate
+				}
+				v.SetCursor(&v.Buf.Cursor)
+				v.Buf.MergeCursors()
+			}
+		}
 
-					v.Cursor.OrigSelection[0] = v.Cursor.Loc
-					v.Cursor.CurSelection[0] = v.Cursor.Loc
-					v.Cursor.CurSelection[1] = v.Cursor.Loc
-				}
-				v.mouseReleased = false
-			} else if !v.mouseReleased {
-				v.MoveToMouseClick(x, y)
-				if v.tripleClick {
-					v.Cursor.AddLineToSelection()
-				} else if v.doubleClick {
-					v.Cursor.AddWordToSelection()
-				} else {
-					v.Cursor.SetSelectionEnd(v.Cursor.Loc)
-					v.Cursor.CopySelection("primary")
+		for key, actions := range mouseBindings {
+			if button == key.buttons && e.Modifiers() == key.modifiers {
+				for _, action := range actions {
+					action(v, true, e)
 				}
 			}
-		case tcell.Button2:
-			// Check viewtype if readonly don't paste (readonly help and log view etc.)
-			if v.Type.readonly == false {
-				// Middle mouse button was clicked,
-				// We should paste primary
-				v.PastePrimary(true)
-			}
+		}
+
+		switch button {
 		case tcell.ButtonNone:
 			// Mouse event with no click
 			if !v.mouseReleased {
 				// Mouse was just released
 
+				x, y := e.Position()
+				x -= v.lineNumOffset - v.leftCol + v.x
+				y += v.Topline - v.y
+
 				// Relocating here isn't really necessary because the cursor will
 				// be in the right place from the last mouse event
 				// However, if we are running in a terminal that doesn't support mouse motion
@@ -615,14 +718,6 @@ func (v *View) HandleEvent(event tcell.Event) {
 				}
 				v.mouseReleased = true
 			}
-		case tcell.WheelUp:
-			// Scroll up
-			scrollspeed := int(v.Buf.Settings["scrollspeed"].(float64))
-			v.ScrollUp(scrollspeed)
-		case tcell.WheelDown:
-			// Scroll down
-			scrollspeed := int(v.Buf.Settings["scrollspeed"].(float64))
-			v.ScrollDown(scrollspeed)
 		}
 	}
 
@@ -637,6 +732,10 @@ func (v *View) HandleEvent(event tcell.Event) {
 	}
 }
 
+func (v *View) mainCursor() bool {
+	return v.Buf.curCursor == len(v.Buf.cursors)-1
+}
+
 // GutterMessage creates a message in this view's gutter
 func (v *View) GutterMessage(section string, lineN int, msg string, kind int) {
 	lineN--
@@ -685,13 +784,19 @@ func (v *View) openHelp(helpPage string) {
 	}
 }
 
+// DisplayView draws the view to the screen
 func (v *View) DisplayView() {
+	if v.Type == vtTerm {
+		v.term.Display()
+		return
+	}
+
 	if v.Buf.Settings["softwrap"].(bool) && v.leftCol != 0 {
 		v.leftCol = 0
 	}
 
-	if v.Type == vtLog {
-		// Log views should always follow the cursor...
+	if v.Type == vtLog || v.Type == vtRaw {
+		// Log or raw views should always follow the cursor...
 		v.Relocate()
 	}
 
@@ -755,11 +860,11 @@ func (v *View) DisplayView() {
 		}
 
 		colorcolumn := int(v.Buf.Settings["colorcolumn"].(float64))
-		if colorcolumn != 0 {
+		if colorcolumn != 0 && xOffset+colorcolumn-v.leftCol < v.Width {
 			style := GetColor("color-column")
 			fg, _, _ := style.Decompose()
 			st := defStyle.Background(fg)
-			screen.SetContent(xOffset+colorcolumn, yOffset+visualLineN, ' ', nil, st)
+			screen.SetContent(xOffset+colorcolumn-v.leftCol, yOffset+visualLineN, ' ', nil, st)
 		}
 
 		screenX = v.x
@@ -863,22 +968,20 @@ func (v *View) DisplayView() {
 				}
 
 				charLoc := char.realLoc
-				if v.Cursor.HasSelection() &&
-					(charLoc.GreaterEqual(v.Cursor.CurSelection[0]) && charLoc.LessThan(v.Cursor.CurSelection[1]) ||
-						charLoc.LessThan(v.Cursor.CurSelection[0]) && charLoc.GreaterEqual(v.Cursor.CurSelection[1])) {
-					// The current character is selected
-					lineStyle = defStyle.Reverse(true)
+				for _, c := range v.Buf.cursors {
+					v.SetCursor(c)
+					if v.Cursor.HasSelection() &&
+						(charLoc.GreaterEqual(v.Cursor.CurSelection[0]) && charLoc.LessThan(v.Cursor.CurSelection[1]) ||
+							charLoc.LessThan(v.Cursor.CurSelection[0]) && charLoc.GreaterEqual(v.Cursor.CurSelection[1])) {
+						// The current character is selected
+						lineStyle = defStyle.Reverse(true)
 
-					if style, ok := colorscheme["selection"]; ok {
-						lineStyle = style
+						if style, ok := colorscheme["selection"]; ok {
+							lineStyle = style
+						}
 					}
 				}
-
-				if tabs[curTab].CurView == v.Num && !v.Cursor.HasSelection() &&
-					v.Cursor.Y == char.realLoc.Y && v.Cursor.X == char.realLoc.X && !cursorSet {
-					screen.ShowCursor(xOffset+char.visualLoc.X, yOffset+char.visualLoc.Y)
-					cursorSet = true
-				}
+				v.SetCursor(&v.Buf.Cursor)
 
 				if v.Buf.Settings["cursorline"].(bool) && tabs[curTab].CurView == v.Num &&
 					!v.Cursor.HasSelection() && v.Cursor.Y == realLineN {
@@ -889,6 +992,16 @@ func (v *View) DisplayView() {
 
 				screen.SetContent(xOffset+char.visualLoc.X, yOffset+char.visualLoc.Y, char.drawChar, nil, lineStyle)
 
+				for i, c := range v.Buf.cursors {
+					v.SetCursor(c)
+					if tabs[curTab].CurView == v.Num && !v.Cursor.HasSelection() &&
+						v.Cursor.Y == char.realLoc.Y && v.Cursor.X == char.realLoc.X && (!cursorSet || i != 0) {
+						ShowMultiCursor(xOffset+char.visualLoc.X, yOffset+char.visualLoc.Y, i)
+						cursorSet = true
+					}
+				}
+				v.SetCursor(&v.Buf.Cursor)
+
 				lastChar = char
 			}
 		}
@@ -899,19 +1012,27 @@ func (v *View) DisplayView() {
 		var cx, cy int
 		if lastChar != nil {
 			lastX = xOffset + lastChar.visualLoc.X + lastChar.width
-			if tabs[curTab].CurView == v.Num && !v.Cursor.HasSelection() &&
-				v.Cursor.Y == lastChar.realLoc.Y && v.Cursor.X == lastChar.realLoc.X+1 {
-				screen.ShowCursor(lastX, yOffset+lastChar.visualLoc.Y)
-				cx, cy = lastX, yOffset+lastChar.visualLoc.Y
+			for i, c := range v.Buf.cursors {
+				v.SetCursor(c)
+				if tabs[curTab].CurView == v.Num && !v.Cursor.HasSelection() &&
+					v.Cursor.Y == lastChar.realLoc.Y && v.Cursor.X == lastChar.realLoc.X+1 {
+					ShowMultiCursor(lastX, yOffset+lastChar.visualLoc.Y, i)
+					cx, cy = lastX, yOffset+lastChar.visualLoc.Y
+				}
 			}
-			realLoc = Loc{lastChar.realLoc.X, realLineN}
+			v.SetCursor(&v.Buf.Cursor)
+			realLoc = Loc{lastChar.realLoc.X + 1, realLineN}
 			visualLoc = Loc{lastX - xOffset, lastChar.visualLoc.Y}
 		} else if len(line) == 0 {
-			if tabs[curTab].CurView == v.Num && !v.Cursor.HasSelection() &&
-				v.Cursor.Y == realLineN {
-				screen.ShowCursor(xOffset, yOffset+visualLineN)
-				cx, cy = xOffset, yOffset+visualLineN
+			for i, c := range v.Buf.cursors {
+				v.SetCursor(c)
+				if tabs[curTab].CurView == v.Num && !v.Cursor.HasSelection() &&
+					v.Cursor.Y == realLineN {
+					ShowMultiCursor(xOffset, yOffset+visualLineN, i)
+					cx, cy = xOffset, yOffset+visualLineN
+				}
 			}
+			v.SetCursor(&v.Buf.Cursor)
 			lastX = xOffset
 			realLoc = Loc{0, realLineN}
 			visualLoc = Loc{0, visualLineN}
@@ -931,7 +1052,7 @@ func (v *View) DisplayView() {
 
 		if v.Buf.Settings["cursorline"].(bool) && tabs[curTab].CurView == v.Num &&
 			!v.Cursor.HasSelection() && v.Cursor.Y == realLineN {
-			for i := lastX; i < xOffset+v.Width; i++ {
+			for i := lastX; i < xOffset+v.Width-v.lineNumOffset; i++ {
 				style := GetColor("cursor-line")
 				fg, _, _ := style.Decompose()
 				style = style.Background(fg)
@@ -953,6 +1074,18 @@ func (v *View) DisplayView() {
 	}
 }
 
+// ShowMultiCursor will display a cursor at a location
+// If i == 0 then the terminal cursor will be used
+// Otherwise a fake cursor will be drawn at the position
+func ShowMultiCursor(x, y, i int) {
+	if i == 0 {
+		screen.ShowCursor(x, y)
+	} else {
+		r, _, _, _ := screen.GetContent(x, y)
+		screen.SetContent(x, y, r, nil, defStyle.Reverse(true))
+	}
+}
+
 // Display renders the view, the cursor, and statusline
 func (v *View) Display() {
 	if globalSettings["termtitle"].(bool) {
@@ -964,6 +1097,11 @@ func (v *View) Display() {
 		screen.HideCursor()
 	}
 	_, screenH := screen.Size()
+
+	if v.Buf.Settings["scrollbar"].(bool) {
+		v.scrollbar.Display()
+	}
+
 	if v.Buf.Settings["statusline"].(bool) {
 		v.sline.Display()
 	} else if (v.y + v.Height) != screenH-1 {

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

@@ -1,27 +1,23 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <component>
-  <id>com.github.zyedidia.micro</id>
-  <name>Micro Text Editor</name>
-  <summary>A modern and intuitive terminal-based text editor</summary>
-  <url type="homepage">https://micro-editor.github.io</url>
-  <url type="bugtracker">https://github.com/zyedidia/micro</url>
-  <metadata_license>MIT</metadata_license>
-   <categories>
-     <category>Development</category>
-	 <category>TextEditor</category>
-   </categories>
-
-  <provides>
-​    <binary>micro</binary>
-​  </provides>
-​  <releases>
-​    <release version="1.2.0" date="2017-05-28" />
-​  </releases>
-​  <developer_name>Zachary Yedidia</developer_name>
-  <screenshots>
-​  <screenshot type="default">
-​    <caption>Micro Text Editor editing its source code.</caption>
-​    <image type="source">https://raw.githubusercontent.com/zyedidia/micro/master/assets/micro-solarized.png</image>
-​  </screenshot>
-​ </screenshots>
+	<id>com.github.zyedidia.micro</id>
+	<name>Micro Text Editor</name>
+	<summary>A modern and intuitive terminal-based text editor</summary>
+	<metadata_license>MIT</metadata_license>
+	<categories>
+		<category>Development</category>
+		<category>TextEditor</category>
+	</categories>
+	<provides>
+	​	<binary>micro</binary>
+	​</provides>
+	​<developer_name>Zachary Yedidia</developer_name>
+	<screenshots>
+	​	<screenshot type="default">
+	​		<caption>Micro Text Editor editing its source code.</caption>
+	​		<image type="source">https://raw.githubusercontent.com/zyedidia/micro/master/assets/micro-solarized.png</image>
+	​	</screenshot>
+	​</screenshots>
+	<url type="homepage">https://micro-editor.github.io</url>
+	<url type="bugtracker">https://github.com/zyedidia/micro/issues</url>
 ​</component>

runtime/colorschemes/darcula.micro

@@ -0,0 +1,27 @@
+color-link default "#CCCCCC,#242424"
+color-link comment "#707070,#242424"
+color-link identifier "#FFC66D,#242424"
+color-link constant "#7A9EC2,#242424"
+color-link constant.string "#6A8759,#242424"
+color-link constant.string.char "#6A8759,#242424"
+color-link statement "#CC8242,#242424"
+color-link symbol "#CCCCCC,#242424"
+color-link preproc "#CC8242,#242424"
+color-link type "#CC8242,#242424"
+color-link special "#CC8242,#242424"
+color-link underlined "#D33682,#242424"
+color-link error "bold #CB4B16,#242424"
+color-link todo "bold #D33682,#242424"
+color-link statusline "#242424,#CCCCCC"
+color-link tabbar "#242424,#CCCCCC"
+color-link indent-char "#4F4F4F,#242424"
+color-link line-number "#666666,#242424"
+color-link current-line-number "#666666,#242424"
+color-link gutter-error "#CB4B16,#242424"
+color-link gutter-warning "#E6DB74,#242424"
+color-link cursor-line "default,#2C2C2C"
+color-link color-column "default,#2C2C2C"
+#No extended types; Plain brackets.
+color-link type.extended "default"
+#color-link symbol.brackets "default"
+color-link symbol.tag "#AE81FF,#242424"

runtime/colorschemes/default.micro

@@ -1,4 +1,3 @@
-# This is the monokai colorscheme
 color-link default "#F8F8F2,#282828"
 color-link comment "#75715E,#282828"
 color-link identifier "#66D9EF,#282828"
@@ -14,7 +13,7 @@ color-link underlined "#D33682,#282828"
 color-link error "bold #CB4B16,#282828"
 color-link todo "bold #D33682,#282828"
 color-link statusline "#282828,#F8F8F2"
-color-link tabbar "#282828,#f8f8f2"
+color-link tabbar "#282828,#F8F8F2"
 color-link indent-char "#505050,#282828"
 color-link line-number "#AAAAAA,#323232"
 color-link current-line-number "#AAAAAA,#282828"
@@ -22,6 +21,7 @@ color-link gutter-error "#CB4B16,#282828"
 color-link gutter-warning "#E6DB74,#282828"
 color-link cursor-line "#323232"
 color-link color-column "#323232"
-#No extended types; plain brackets
+#No extended types; Plain brackets.
 color-link type.extended "default"
-color-link symbol.brackets "default"
+#color-link symbol.brackets "default"
+color-link symbol.tag "#AE81FF,#282828"

runtime/colorschemes/flamepoint-tc.micro

@@ -1,30 +0,0 @@
-#Flamepoint theme
-#By CaptainMcClellan
-color-link default ""
-color-link comment ""
-color-link constant ""
-color-link constant.bool ""
-color-link constant.bool.true ""
-color-link constant.bool.false ""
-color-link constant.number ""
-color-link constant.specialChar ""
-color-link constant.string ""
-color-link constant.string.url "underline"
-color-link identifier ""
-color-link identifier.var ""
-color-link preproc ""
-color-link special ""
-color-link statement ""
-color-link symbol ""
-color-link symbol.brackets ""
-color-link symbol.tag ""
-color-link type ""
-color-link type.keyword ""
-color-link error ""
-color-link todo ""
-color-link cursor-line "" 
-color-link statusline ""
-color-link tabbar ""
-color-link color-column ""
-color-link gutter-error ""
-color-link gutter-warning ""

runtime/colorschemes/funky-cactus-tc.micro

@@ -1 +0,0 @@
-#Funky Cactus theme in true colour.