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--- a/.gitattributes
+++ b/.gitattributes
@ -0,0 +1,12 @@
+.* export-ignore
+/CODE_OF_CONDUCT.md export-ignore
+/CONTRIBUTING.md export-ignore
+/Dockerfile export-ignore
+/ISSUE_TEMPLATE.md export-ignore
+/Makefile export-ignore
+/PULL_REQUEST_TEMPLATE.md export-ignore
+/README.md export-ignore
+/custom-checks export-ignore
+/img export-ignore
+/run-tests export-ignore
+/test export-ignore
--- a/.gitignore
+++ b/.gitignore
@ -0,0 +1,5 @@
+/init.vim
+/doc/tags
+.*
+*.obj
+tags
--- a/.travis.yml
+++ b/.travis.yml
@ -0,0 +1,7 @@
+---
+sudo: required
+services:
+    - docker
+language: python
+script: |
+    ./run-tests
--- a/CODE_OF_CONDUCT.md
+++ b/CODE_OF_CONDUCT.md
@ -0,0 +1,3 @@
+Codes of conduct are totally unnecessary and dumb.
+
+Just don't be a jerk and have fun.
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@ -0,0 +1,173 @@
+# Contributing to ALE
+
+1. [Guidelines](#guidelines)
+2. [Creating Issues](#issues)
+3. [Creating Pull Requests](#pull-requests)
+    1. [Adding a New Linter](#adding-a-new-linter)
+    2. [Adding New Options](#adding-new-options)
+4. [Writing Documentation](#writing-documentation)
+    1. [Documenting New Linters](#documenting-new-linters)
+    2. [Editing the Online Documentation](#editing-online-documentation)
+    3. [Documenting Linter Options](#documenting-linter-options)
+5. [In Case of Busses](#in-case-of-busses)
+
+<a name="guidelines"></a>
+
+## 1. Guidelines
+
+Have fun, and work on whatever floats your boat. Take It Easy :tm:.
+
+Don't forget to **write documentation** for whatever it is you are doing.
+See the ["Writing Documentation"](#writing-documentation) section.
+
+Remember to write Vader tests for most of the code you write. You can look at
+existing Vader tests in the `test` directory for examples.
+
+When writing code, follow the [Google Vimscript Style
+Guide](https://google.github.io/styleguide/vimscriptguide.xml), and run `vint
+-s` on your files to check for most of what the guide mentions and more. If you
+install this plugin (ALE) and install [Vint](https://github.com/Kuniwak/vint), it
+will check your code while you type.
+
+<a name="issues"></a>
+
+## 2. Creating Issues
+
+Before creating any issues, please look through the current list of issues and
+pull requests, and ensure that the issue hasn't already been reported. If an
+issue has already been reported, but you have some new insight, please add
+a comment to the existing issue.
+
+Please read the FAQ in the README before creating any issues. A feature
+you desire may already exist and be documented, or the FAQ might explain
+how to solve a problem you have already.
+
+Please try and describe any issues reported with as much detail as you can
+provide about your Vim version, the linter you were trying to run, your
+operating system, or any other information you think might be helpful.
+
+Please describe your issue in clear, grammatically correct, and easy to
+understand English. You are more likely to see an issue resolved if others
+can understand you.
+
+<a name="pull-requests"></a>
+
+## 3. Creating Pull Requests
+
+For code you write, make sure to credit yourself at the top of files you add,
+and probably those you modify. You can write some comments at the top of your
+VIM files.
+
+```vim
+" Author: John Smith <john.smith@gmail.com>
+" Description: This file adds support for awesomelinter for the best language ever.
+```
+
+If you want to credit multiple authors, you can comma separate them.
+
+```vim
+" Author: John Smith <john.smith@gmail.com>, Jane Doe <https://jane-doe.info>
+```
+
+<a name="adding-a-new-linter"></a>
+
+### 3.i. Adding a New Linter
+
+If you add a new linter, look for existing handlers first in the
+[handlers](autoload/ale/handlers) directory. One of the handlers there may
+already be able to handle your lines of output. If you find that your new
+linter replicates an existing error handler, consider pulling it up into the
+[handlers](autoload/ale/handlers) directory, and use the generic handler in
+both places.
+
+When you add a linter, make sure the language for the linter and the linter
+itself are present in the table in the [README.md](README.md) file and in the
+Vim [help file](doc/ale.txt). The programs and linters should be sorted
+alphabetically in the table and list.
+
+<a name="adding-new-options"></a>
+
+### 3.ii. Adding New Options
+
+If you add new options to the plugin, make sure to document those new options
+in the [README.md](README.md) file, and also in the [help file](doc/ale.txt).
+Follow the format of other options in each. Global options should appear in the
+README file, and in the relevant section in the help file. Options specific
+to a particular linter should appear in the section for that linter.
+
+Linter options for customizing general argument lists should be named
+`g:ale_<filetype>_<linter>_options`, so that all linters can have similar
+global variable names.
+
+Any options for linters should be set to some default value so it is always
+easy to see what the default is with `:echo g:ale...`.
+
+<a name="writing-documentation"></a>
+
+## 4. Writing Documentation
+
+If you are adding new linters, changing the API, adding new options, etc., you
+_must_ write some documentation describing it in the `doc/ale.txt` file.  New
+linters _must_ be added to the `README.md` file too, so other users can get a
+quick overview of the supported tools.
+
+<a name="documenting-new-linters"></a>
+
+### 4.i Documenting New Linters
+
+If you add a new linter to the project, edit the table in the `README.md` file,
+and edit the list of linters at the top of the `doc/ale.txt` file. The linters
+should be sorted vertically in lexicographic (alphabetical) order by the
+programming language name or filetype, and the tools for each language should
+be sorted in lexicographic order horizontally. Sorting in this manner is a fair
+manner of presenting all of the information in an easy to scan way, without
+giving some unfair preference to any particular tool or language.
+
+<a name="editing-online-documentation"></a>
+
+### 4.ii Editing the Online Documentation
+
+The "online documentation" file used for this project lives in `doc/ale.txt`.
+This is the file used for generating `:help` text inside Vim itself. There are
+some guidlines to follow for this file.
+
+1. Keep all text within a column size of 79 characters, inclusive.
+2. Open a section with 79 `=` or `-` characters, for headings and subheadings.
+3. Sections should have a _single_ blank line before or after.
+4. Between descriptions of variables/functions/commands, use _two_ blank lines.
+5. Up-indent the description of a variable/function/command by two spaces.
+6. Place tags at the ends of lines, with the final characters on column 79.
+   All of the tags should line up perfectly on the same column as you scan
+   down through the document.
+7. Keep the table of contents balanced so the longest tag link ends on column
+   79, and so all links line up perfectly on their first character, on the
+   left.
+
+<a name="documenting-linter-options"></a>
+
+### 4.iii Documenting Linter Options
+
+For documenting new linter options, please add a new sub-section under the
+"Linter Specific Options" section describing all of the global options added
+for each linter, and what the default values of the options are. All global
+options for linters should be set to some default value. This will allow users
+to look up the default value easily by typing `:echo g:ale_...`.
+
+<a name="in-case-of-busses"></a>
+
+## 5. In Case of Busses
+
+Should the principal author of the ALE project and all collaborators with the
+required access needed to properly administrate the project on GitHub or any
+other website either perish or disappear, whether by tragic traffic accident
+or government adduction, etc., action should be taken to ensure that the
+project continues. If no one is left to administer the project where it is
+hosted, please fork the project and nominate someone capable to administer it.
+Preferably, in such an event, a single fork of the project will replace the
+original, and life will go on, except the life of whoever vanished, because
+then they will probably be dead.
+
+Should w0rp suddenly disappear, then he was probably killed in a traffic
+accident, or the government finally decided to kill him and make it look like
+suicide. In the latter event, please subvert said government and restore
+order to the universe, and ensure peace for mankind.
--- a/18
+++ b/18
@ -0,0 +1,18 @@
+FROM tweekmonster/vim-testbed:latest
+
+RUN install_vim -tag v8.0.0027 -build \
+                -tag neovim:v0.1.7 -build
+
+ENV PACKAGES="\
+    bash \
+    git \
+    python \
+    py-pip \
+"
+RUN apk --update add $PACKAGES && \
+    rm -rf /var/cache/apk/* /tmp/* /var/tmp/*
+
+RUN pip install vim-vint==0.3.9
+
+RUN git clone https://github.com/junegunn/vader.vim vader && \
+    cd vader && git checkout c6243dd81c98350df4dec608fa972df98fa2a3af
--- a/ISSUE_TEMPLATE.md
+++ b/ISSUE_TEMPLATE.md
@ -0,0 +1,8 @@
+<!--
+For bugs, paste output from your clipboard after running :ALEInfoToClipboard
+here. If that doesn't work for some reason, try running :ALEInfo and copying
+the output from that here instead. If everything is broken, run around in
+circles and scream.
+
+Whatever the case, describe the your issue here.
+-->
--- a/22
+++ b/22
@ -0,0 +1,22 @@
+Copyright (c) 2016-2017, w0rp <devw0rp@gmail.com>
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this
+   list of conditions and the following disclaimer.
+2. 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 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.
--- a/PULL_REQUEST_TEMPLATE.md
+++ b/PULL_REQUEST_TEMPLATE.md
@ -0,0 +1,21 @@
+<!--
+READ THIS: Before creating a pull request, please consider the following first.
+
+* The most important thing you can do is write tests. Code without tests
+  probably doesn't work, and will almost certainly stop working later on. Pull
+  requests without tests probably won't be accepted, although there are some
+  exceptions.
+* Read the Contributing guide linked above first.
+* If you are adding a new linter, remember to update the README.md file and
+  doc/ale.txt first.
+* If you add or modify a function for converting error lines into loclist items
+  that ALE can work with, please add Vader tests for them. Look at existing
+  tests in the test/handler directory, etc.
+* If you add or modify a function for computing a command line string for
+  running a command, please add Vader tests for that.
+* Generally try and cover anything with Vader tests, although some things just
+  can't be tested with Vader, or at least they can be hard to test. Consider
+  breaking up your code so that some parts can be tested, and generally open up
+  a discussion about it.
+* Have fun!
+-->
--- a/README.md
+++ b/README.md
@ -0,0 +1,559 @@
+# Asynchronous Lint Engine [![Build Status](https://travis-ci.org/w0rp/ale.svg?branch=master)](https://travis-ci.org/w0rp/ale)
+
+![ALE Logo by Mark Grealish - https://www.bhalash.com/](img/logo.jpg?raw=true)
+
+ALE (Asynchronous Lint Engine) is a plugin for providing linting in NeoVim
+and Vim 8 while you edit your text files.
+
+![linting example](img/example.gif?raw=true)
+
+ALE makes use of NeoVim and Vim 8 job control functions and timers to
+run linters on the contents of text buffers and return errors as
+text is changed in Vim. This allows for displaying warnings and
+errors in files being edited in Vim before files have been saved
+back to a filesystem.
+
+In other words, this plugin allows you to lint while you type.
+
+In addition to linting support, ALE offers some support for fixing code with
+formatting tools, and completion via Language Server Protocol servers, or
+servers with similar enough protocols, like `tsserver`.
+
+## Table of Contents
+
+1. [Supported Languages and Tools](#supported-languages)
+2. [Usage](#usage)
+    1. [Linting](#usage-linting)
+    2. [Fixing](#usage-fixing)
+    3. [Completion](#usage-completion)
+3. [Installation](#installation)
+    1. [Installation with Vim package management](#standard-installation)
+    2. [Installation with Pathogen](#installation-with-pathogen)
+    3. [Installation with Vundle](#installation-with-vundle)
+4. [Contributing](#contributing)
+5. [FAQ](#faq)
+    1. [How do I disable particular linters?](#faq-disable-linters)
+    2. [How can I keep the sign gutter open?](#faq-keep-signs)
+    3. [How can I change the signs ALE uses?](#faq-change-signs)
+    4. [How can I show errors or warnings in my statusline?](#faq-statusline)
+    5. [How can I change the format for echo messages?](#faq-echo-format)
+    6. [How can I execute some code when ALE stops linting?](#faq-autocmd)
+    7. [How can I navigate between errors quickly?](#faq-navigation)
+    8. [How can I run linters only when I save files?](#faq-lint-on-save)
+    9. [How can I use the quickfix list instead of the loclist?](#faq-quickfix)
+    10. [How can I check JSX files with both stylelint and eslint?](#faq-jsx-stylelint-eslint)
+    11. [Will this plugin eat all of my laptop battery power?](#faq-my-battery-is-sad)
+
+<a name="supported-languages"></a>
+
+## 1. Supported Languages and Tools
+
+This plugin supports the following languages and tools. All available
+tools will be run in combination, so they can be complementary.
+
+<!--
+Keep the table rows sorted alphabetically by the language name,
+and the tools in the tools column sorted alphabetically by the tool
+name. That seems to be the fairest way to arrange this table.
+-->
+
+| Language | Tools |
+| -------- | ----- |
+| ASM | [gcc](https://gcc.gnu.org) |
+| Ansible | [ansible-lint](https://github.com/willthames/ansible-lint) |
+| AsciiDoc | [proselint](http://proselint.com/)|
+| Awk | [gawk](https://www.gnu.org/software/gawk/)|
+| Bash | [-n flag](https://www.gnu.org/software/bash/manual/bash.html#index-set), [shellcheck](https://www.shellcheck.net/) |
+| Bourne Shell | [-n flag](http://linux.die.net/man/1/sh), [shellcheck](https://www.shellcheck.net/) |
+| C | [cppcheck](http://cppcheck.sourceforge.net), [gcc](https://gcc.gnu.org/), [clang](http://clang.llvm.org/), [clang-format](https://clang.llvm.org/docs/ClangFormat.html)|
+| C++ (filetype cpp) | [clang](http://clang.llvm.org/), [clangcheck](http://clang.llvm.org/docs/ClangCheck.html), [clangtidy](http://clang.llvm.org/extra/clang-tidy/), [cppcheck](http://cppcheck.sourceforge.net), [cpplint](https://github.com/google/styleguide/tree/gh-pages/cpplint), [gcc](https://gcc.gnu.org/), [clang-format](https://clang.llvm.org/docs/ClangFormat.html)|
+| C# | [mcs](http://www.mono-project.com/docs/about-mono/languages/csharp/) |
+| Chef | [foodcritic](http://www.foodcritic.io/) |
+| CMake | [cmakelint](https://github.com/richq/cmake-lint) |
+| CoffeeScript | [coffee](http://coffeescript.org/), [coffeelint](https://www.npmjs.com/package/coffeelint) |
+| Crystal | [crystal](https://crystal-lang.org/) |
+| CSS | [csslint](http://csslint.net/), [stylelint](https://github.com/stylelint/stylelint) |
+| Cython (pyrex filetype) | [cython](http://cython.org/) |
+| D | [dmd](https://dlang.org/dmd-linux.html) |
+| Dart | [dartanalyzer](https://github.com/dart-lang/sdk/tree/master/pkg/analyzer_cli) |
+| Dockerfile | [hadolint](https://github.com/lukasmartinelli/hadolint) |
+| Elixir | [credo](https://github.com/rrrene/credo), [dogma](https://github.com/lpil/dogma) |
+| Elm | [elm-make](https://github.com/elm-lang/elm-make) |
+| Erb | [erb](https://github.com/jeremyevans/erubi), [erubis](https://github.com/kwatch/erubis) |
+| Erlang | [erlc](http://erlang.org/doc/man/erlc.html), [SyntaxErl](https://github.com/ten0s/syntaxerl) |
+| Fortran | [gcc](https://gcc.gnu.org/) |
+| FusionScript | [fusion-lint](https://github.com/RyanSquared/fusionscript) |
+| Go | [gofmt -e](https://golang.org/cmd/gofmt/), [go vet](https://golang.org/cmd/vet/), [golint](https://godoc.org/github.com/golang/lint), [gometalinter](https://github.com/alecthomas/gometalinter), [go build](https://golang.org/cmd/go/), [gosimple](https://github.com/dominikh/go-tools/tree/master/cmd/gosimple), [staticcheck](https://github.com/dominikh/go-tools/tree/master/cmd/staticcheck) |
+| GraphQL | [gqlint](https://github.com/happylinks/gqlint) |
+| Haml | [haml-lint](https://github.com/brigade/haml-lint)
+| Handlebars | [ember-template-lint](https://github.com/rwjblue/ember-template-lint) |
+| Haskell | [ghc](https://www.haskell.org/ghc/), [stack-ghc](https://haskellstack.org/), [stack-build](https://haskellstack.org/), [ghc-mod](https://github.com/DanielG/ghc-mod), [stack-ghc-mod](https://github.com/DanielG/ghc-mod), [hlint](https://hackage.haskell.org/package/hlint), [hdevtools](https://hackage.haskell.org/package/hdevtools) |
+| HTML | [HTMLHint](http://htmlhint.com/), [proselint](http://proselint.com/), [tidy](http://www.html-tidy.org/) |
+| Idris | [idris](http://www.idris-lang.org/) |
+| Java | [checkstyle](http://checkstyle.sourceforge.net), [javac](http://www.oracle.com/technetwork/java/javase/downloads/index.html) |
+| JavaScript | [eslint](http://eslint.org/), [jscs](http://jscs.info/), [jshint](http://jshint.com/), [flow](https://flowtype.org/), [standard](http://standardjs.com/), [prettier](https://github.com/prettier/prettier) (and `prettier-eslint`, `prettier-standard`), [xo](https://github.com/sindresorhus/xo)
+| JSON | [jsonlint](http://zaa.ch/jsonlint/) |
+| Kotlin | [kotlinc](https://kotlinlang.org), [ktlint](https://ktlint.github.io) see `:help ale-integration-kotlin` for configuration instructions
+| LaTeX | [chktex](http://www.nongnu.org/chktex/), [lacheck](https://www.ctan.org/pkg/lacheck), [proselint](http://proselint.com/) |
+| Lua | [luacheck](https://github.com/mpeterv/luacheck) |
+| Markdown | [mdl](https://github.com/mivok/markdownlint), [proselint](http://proselint.com/), [vale](https://github.com/ValeLint/vale) |
+| MATLAB | [mlint](https://www.mathworks.com/help/matlab/ref/mlint.html) |
+| Nim | [nim](https://nim-lang.org/docs/nimc.html) |
+| nix | [nix-instantiate](http://nixos.org/nix/manual/#sec-nix-instantiate) |
+| nroff | [proselint](http://proselint.com/)|
+| Objective-C | [clang](http://clang.llvm.org/) |
+| Objective-C++ | [clang](http://clang.llvm.org/) |
+| OCaml | [merlin](https://github.com/the-lambda-church/merlin) see `:help ale-integration-ocaml-merlin` for configuration instructions
+| Perl | [perl -c](https://perl.org/), [perl-critic](https://metacpan.org/pod/Perl::Critic) |
+| PHP | [hack](http://hacklang.org/), [langserver](https://github.com/felixfbecker/php-language-server), [php -l](https://secure.php.net/), [phpcs](https://github.com/squizlabs/PHP_CodeSniffer), [phpmd](https://phpmd.org), [phpstan](https://github.com/phpstan/phpstan), [phpcbf](https://github.com/squizlabs/PHP_CodeSniffer) |
+| Pod | [proselint](http://proselint.com/)|
+| Pug | [pug-lint](https://github.com/pugjs/pug-lint) |
+| Puppet | [puppet](https://puppet.com), [puppet-lint](https://puppet-lint.com) |
+| Python | [autopep8](https://github.com/hhatto/autopep8), [flake8](http://flake8.pycqa.org/en/latest/), [isort](https://github.com/timothycrosley/isort), [mypy](http://mypy-lang.org/), [pycodestyle](https://github.com/PyCQA/pycodestyle), [pylint](https://www.pylint.org/), [yapf](https://github.com/google/yapf) |
+| R | [lintr](https://github.com/jimhester/lintr) |
+| ReasonML | [merlin](https://github.com/the-lambda-church/merlin) see `:help ale-integration-reason-merlin` for configuration instructions
+| reStructuredText | [proselint](http://proselint.com/)|
+| RPM spec | [rpmlint](https://github.com/rpm-software-management/rpmlint) (disabled by default; see `:help ale-integration-spec`) |
+| Ruby | [brakeman](http://brakemanscanner.org/), [rails_best_practices](https://github.com/flyerhzm/rails_best_practices), [reek](https://github.com/troessner/reek), [rubocop](https://github.com/bbatsov/rubocop), [ruby](https://www.ruby-lang.org) |
+| Rust |  cargo (see `:help ale-integration-rust` for configuration instructions), [rls](https://github.com/rust-lang-nursery/rls), [rustc](https://www.rust-lang.org/) |
+| SASS | [sass-lint](https://www.npmjs.com/package/sass-lint), [stylelint](https://github.com/stylelint/stylelint) |
+| SCSS | [sass-lint](https://www.npmjs.com/package/sass-lint), [scss-lint](https://github.com/brigade/scss-lint), [stylelint](https://github.com/stylelint/stylelint) |
+| Scala | [scalac](http://scala-lang.org), [scalastyle](http://www.scalastyle.org) |
+| Slim | [slim-lint](https://github.com/sds/slim-lint)
+| SML | [smlnj](http://www.smlnj.org/) |
+| Stylus | [stylelint](https://github.com/stylelint/stylelint) |
+| SQL | [sqlint](https://github.com/purcell/sqlint) |
+| Swift | [swiftlint](https://github.com/realm/SwiftLint), [swiftformat](https://github.com/nicklockwood/SwiftFormat) |
+| Tcl | [nagelfar](http://nagelfar.sourceforge.net)|
+| Texinfo | [proselint](http://proselint.com/)|
+| Text^ | [proselint](http://proselint.com/), [vale](https://github.com/ValeLint/vale) |
+| TypeScript | [eslint](http://eslint.org/), [tslint](https://github.com/palantir/tslint), tsserver, typecheck |
+| Verilog | [iverilog](https://github.com/steveicarus/iverilog), [verilator](http://www.veripool.org/projects/verilator/wiki/Intro) |
+| Vim | [vint](https://github.com/Kuniwak/vint) |
+| Vim help^ | [proselint](http://proselint.com/)|
+| XHTML | [proselint](http://proselint.com/)|
+| XML | [xmllint](http://xmlsoft.org/xmllint.html/)|
+| YAML | [swaglint](https://github.com/byCedric/swaglint), [yamllint](https://yamllint.readthedocs.io/) |
+
+* *^ No linters for text or Vim help filetypes are enabled by default.*
+
+<a name="usage"></a>
+
+## 2. Usage
+
+<a name="usage-linting"></a>
+
+### 2.i Linting
+
+Once this plugin is installed, while editing your files in supported
+languages and tools which have been correctly installed,
+this plugin will send the contents of your text buffers to a variety of
+programs for checking the syntax and semantics of your programs. By default,
+linters will be re-run in the background to check your syntax when you open
+new buffers or as you make edits to your files.
+
+The behaviour of linting can be configured with a variety of options,
+documented in [the Vim help file](doc/ale.txt). For more information on the
+options ALE offers, consult `:help ale-options` for global options and `:help
+ale-linter-options` for options specified to particular linters.
+
+<a name="usage-fixing"></a>
+
+### 2.ii Fixing
+
+ALE can fix files with the `ALEFix` command. Functions need to be configured
+for different filetypes with the `g:ale_fixers` variable. For example, the
+following code can be used to fix JavaScript code with ESLint:
+
+```vim
+" Put this in vimrc or a plugin file of your own.
+" After this is configured, :ALEFix will try and fix your JS code with ESLint.
+let g:ale_fixers = {
+\   'javascript': ['eslint'],
+\}
+
+" Set this setting in vimrc if you want to fix files automatically on save.
+" This is off by default.
+let g:ale_fix_on_save = 1
+```
+
+The `:ALEFixSuggest` command will suggest some supported tools for fixing code,
+but fixers can be also implemented with functions, including lambda functions
+too. See `:help ale-fix` for detailed information.
+
+<a name="usage-completion"></a>
+
+### 2.iii Completion
+
+ALE offers some support for completion via hijacking of omnicompletion while you
+type. All of ALE's completion information must come from Language Server
+Protocol linters, or similar protocols. At the moment, completion is only
+supported for TypeScript code with `tsserver`, when `tsserver` is enabled. You
+can enable completion like so:
+
+```vim
+" Enable completion where available.
+let g:ale_completion_enabled = 1
+```
+
+See `:help ale-completion` for more information.
+
+<a name="installation"></a>
+
+## 3. Installation
+
+To install this plugin, you should use one of the following methods.
+For Windows users, replace usage of the Unix `~/.vim` directory with
+`%USERPROFILE%\vimfiles`, or another directory if you have configured
+Vim differently. On Windows, your `~/.vimrc` file will be similarly
+stored in `%USERPROFILE%\_vimrc`.
+
+<a name="standard-installation"></a>
+
+### 3.i. Installation with Vim package management
+
+In Vim 8 and NeoVim, you can install plugins easily without needing to use
+any other tools. Simply clone the plugin into your `pack` directory.
+
+#### Vim 8 on Unix
+
+```bash
+mkdir -p ~/.vim/pack/git-plugins/start
+git clone https://github.com/w0rp/ale.git ~/.vim/pack/git-plugins/start/ale
+```
+
+#### NeoVim on Unix
+
+```bash
+mkdir -p ~/.local/share/nvim/site/pack/git-plugins/start
+git clone https://github.com/w0rp/ale.git ~/.local/share/nvim/site/pack/git-plugins/start/ale
+```
+
+#### Vim 8 on Windows
+
+```bash
+# Run these commands in the "Git for Windows" Bash terminal
+mkdir -p ~/vimfiles/pack/git-plugins/start
+git clone https://github.com/w0rp/ale.git ~/vimfiles/pack/git-plugins/start/ale
+```
+
+#### Generating Vim help files
+
+You can add the following line to your vimrc files to generate documentation
+tags automatically, if you don't have something similar already, so you can use
+the `:help` command to consult ALE's online documentation:
+
+```vim
+" Put these lines at the very end of your vimrc file.
+
+" Load all plugins now.
+" Plugins need to be added to runtimepath before helptags can be generated.
+packloadall
+" Load all of the helptags now, after plugins have been loaded.
+" All messages and errors will be ignored.
+silent! helptags ALL
+```
+
+<a name="installation-with-pathogen"></a>
+
+### 3.ii. Installation with Pathogen
+
+To install this module with [Pathogen](https://github.com/tpope/vim-pathogen),
+you should clone this repository to your bundle directory, and ensure
+you have the line `execute pathogen#infect()` in your `~/.vimrc` file.
+You can run the following commands in your terminal to do so:
+
+```bash
+cd ~/.vim/bundle
+git clone https://github.com/w0rp/ale.git
+```
+
+<a name="installation-with-vundle"></a>
+
+### 3.iii. Installation with Vundle
+
+You can install this plugin using [Vundle](https://github.com/VundleVim/Vundle.vim)
+by using the path on GitHub for this repository.
+
+```vim
+Plugin 'w0rp/ale'
+```
+
+See the Vundle documentation for more information.
+
+<a name="contributing"></a>
+
+## 4. Contributing
+
+If you would like to see support for more languages and tools, please
+[create an issue](https://github.com/w0rp/ale/issues)
+or [create a pull request](https://github.com/w0rp/ale/pulls).
+If your tool can read from stdin or you have code to suggest which is good,
+support can be happily added for it.
+
+If you are interested in the general direction of the project, check out the
+[wiki home page](https://github.com/w0rp/ale/wiki). The wiki includes a
+Roadmap for the future, and more.
+
+If you'd liked to discuss the project more directly, check out the `#vim-ale` channel
+on Freenode. Web chat is available [here](https://webchat.freenode.net/?channels=vim-ale).
+
+<a name="faq"></a>
+
+## 5. FAQ
+
+<a name="faq-disable-linters"></a>
+
+### 5.i. How do I disable particular linters?
+
+By default, all available tools for all supported languages will be run.
+If you want to only select a subset of the tools, simply create a
+`g:ale_linters` dictionary in your vimrc file mapping filetypes
+to lists of linters to run.
+
+```vim
+let g:ale_linters = {
+\   'javascript': ['eslint'],
+\}
+```
+
+For all languages unspecified in the dictionary, all possible linters will
+be run for those languages, just as when the dictionary is not defined.
+Running many linters should not typically obstruct editing in Vim,
+as they will all be executed in separate processes simultaneously.
+
+This plugin will look for linters in the [`ale_linters`](ale_linters) directory.
+Each directory within corresponds to a particular filetype in Vim, and each file
+in each directory corresponds to the name of a particular linter.
+
+<a name="faq-keep-signs"></a>
+
+### 5.ii. How can I keep the sign gutter open?
+
+You can keep the sign gutter open at all times by setting the
+`g:ale_sign_column_always` to 1
+
+```vim
+let g:ale_sign_column_always = 1
+```
+
+<a name="faq-change-signs"></a>
+
+### 5.iii. How can I change the signs ALE uses?
+
+Use these options to specify what text should be used for signs:
+
+```vim
+let g:ale_sign_error = '>>'
+let g:ale_sign_warning = '--'
+```
+
+ALE sets some background colors automatically for warnings and errors
+in the sign gutter, with the names `ALEErrorSign` and `ALEWarningSign`.
+These colors can be customised, or even removed completely:
+
+```vim
+highlight clear ALEErrorSign
+highlight clear ALEWarningSign
+```
+
+<a name="faq-statusline"></a>
+
+### 5.iv. How can I show errors or warnings in my statusline?
+
+[vim-airline](https://github.com/vim-airline/vim-airline) integrates with ALE
+for displaying error information in the status bar. If you want to see the
+status for ALE in a nice format, it is recommended to use vim-airline with ALE.
+The airline extension can be enabled by adding the following to your vimrc:
+
+```vim
+" Set this. Airline will handle the rest.
+let g:airline#extensions#ale#enabled = 1
+```
+
+If you don't want to use vim-airline, you can implement your own statusline
+function without adding any other plugins. ALE provides a function for counting
+the number of problems for this purpose, named `ale#statusline#Count`.
+
+Say you want to display all errors as one figure, and all non-errors as another
+figure. You can do the following:
+
+```vim
+function! LinterStatus() abort
+    let l:counts = ale#statusline#Count(bufnr(''))
+
+    let l:all_errors = l:counts.error + l:counts.style_error
+    let l:all_non_errors = l:counts.total - l:all_errors
+
+    return l:counts.total == 0 ? 'OK' : printf(
+    \   '%dW %dE',
+    \   all_non_errors,
+    \   all_errors
+    \)
+endfunction
+
+set statusline=%{LinterStatus()}
+```
+
+See `:help ale#statusline#Count()` for more information.
+
+<a name="faq-echo-format"></a>
+
+### 5.v. How can I change the format for echo messages?
+
+There are 3 global options that allow customizing the echoed message.
+
+- `g:ale_echo_msg_format` where:
+    * `%s` is the error message itself
+    * `%linter%` is the linter name
+    * `%severity` is the severity type
+- `g:ale_echo_msg_error_str` is the string used for error severity.
+- `g:ale_echo_msg_warning_str` is the string used for warning severity.
+
+So for example this:
+
+```vim
+let g:ale_echo_msg_error_str = 'E'
+let g:ale_echo_msg_warning_str = 'W'
+let g:ale_echo_msg_format = '[%linter%] %s [%severity%]'
+```
+
+Will give you:
+
+![Echoed message](img/echo.png)
+
+<a name="faq-autocmd"></a>
+
+### 5.vi. How can I execute some code when ALE stops linting?
+
+ALE runs its own [autocmd](http://vimdoc.sourceforge.net/htmldoc/autocmd.html)
+event whenever has a linter has been successfully executed and processed. This
+autocmd event can be used to call arbitrary functions after ALE stops linting.
+
+```vim
+augroup YourGroup
+    autocmd!
+    autocmd User ALELint call YourFunction()
+augroup END
+```
+
+<a name="faq-navigation"></a>
+
+### 5.vii. How can I navigate between errors quickly?
+
+ALE offers some commands with `<Plug>` keybinds for moving between warnings and
+errors quickly. You can map the keys Ctrl+j and Ctrl+k to moving between errors
+for example:
+
+```vim
+nmap <silent> <C-k> <Plug>(ale_previous_wrap)
+nmap <silent> <C-j> <Plug>(ale_next_wrap)
+```
+
+For more information, consult the online documentation with
+`:help ale-navigation-commands`.
+
+<a name="faq-lint-on-save"></a>
+
+### 5.viii. How can I run linters only when I save files?
+
+ALE offers an option `g:ale_lint_on_save` for enabling running the linters
+when files are saved. This option is enabled by default. If you only
+wish to run linters when files are saved, you can turn the other
+options off.
+
+```vim
+" Write this in your vimrc file
+let g:ale_lint_on_text_changed = 'never'
+" You can disable this option too
+" if you don't want linters to run on opening a file
+let g:ale_lint_on_enter = 0
+```
+
+If for whatever reason you don't wish to run linters again when you save
+files, you can set `g:ale_lint_on_save` to `0`.
+
+<a name="faq-quickfix"></a>
+
+### 5.ix. How can I use the quickfix list instead of the loclist?
+
+The quickfix list can be enabled by turning the `g:ale_set_quickfix`
+option on. If you wish to also disable the loclist, you can disable
+the `g:ale_set_loclist` option.
+
+```vim
+" Write this in your vimrc file
+let g:ale_set_loclist = 0
+let g:ale_set_quickfix = 1
+```
+
+If you wish to show Vim windows for the loclist or quickfix items
+when a file contains warnings or errors, `g:ale_open_list` can be
+set to `1`. `g:ale_keep_list_window_open` can be set to `1`
+if you wish to keep the window open even after errors disappear.
+
+```vim
+let g:ale_open_list = 1
+" Set this if you want to.
+" This can be useful if you are combining ALE with
+" some other plugin which sets quickfix errors, etc.
+let g:ale_keep_list_window_open = 1
+```
+
+<a name="faq-jsx-stylelint-eslint"></a>
+
+### 5.x. How can I check JSX files with both stylelint and eslint?
+
+If you configure ALE options correctly in your vimrc file, and install
+the right tools, you can check JSX files with stylelint and eslint.
+
+First, install eslint and install stylelint with
+[stylelint-processor-styled-components](https://github.com/styled-components/stylelint-processor-styled-components).
+
+Supposing you have installed both tools correctly, configure your .jsx files so
+`jsx` is included in the filetype. You can use an `autocmd` for this.
+
+```vim
+augroup FiletypeGroup
+    autocmd!
+    au BufNewFile,BufRead *.jsx set filetype=javascript.jsx
+augroup END
+```
+
+Supposing the filetype has been set correctly, you can set the following
+options in your vimrc file:
+
+```vim
+let g:ale_linters = {'jsx': ['stylelint', 'eslint']}
+let g:ale_linter_aliases = {'jsx': 'css'}
+```
+
+ALE will alias the `jsx` filetype so it uses the `css` filetype linters, and
+use the original Array of selected linters for `jsx` from the `g:ale_linters`
+object. All available linters will be used for the filetype `javascript`, and
+no linter will be run twice for the same file.
+
+<a name="faq-my-battery-is-sad"></a>
+
+### 5.xi. Will this plugin eat all of my laptop battery power?
+
+ALE takes advantage of the power of various tools to check your code. This of
+course means that CPU time will be used to continuously check your code. If you
+are concerned about the CPU time ALE will spend, which will of course imply
+some cost to battery life, you can adjust your settings to make your CPU do
+less work.
+
+First, consider increasing the delay before which ALE will run any linters
+while you type. ALE uses a timeout which is cancelled and reset every time you
+type, and this delay can be increased so linters are run less often. See
+`:help g:ale_lint_delay` for more information.
+
+If you don't wish to run linters while you type, you can disable that
+behaviour. Set `g:ale_lint_on_text_changed` to `never` or `normal`. You won't
+get as frequent error checking, but ALE shouldn't block your ability to edit a
+document after you save a file, so the asynchronous nature of the plugin will
+still be an advantage.
+
+If you are still concerned, you can turn the automatic linting off altogether,
+including the option `g:ale_lint_on_enter`, and you can run ALE manually with
+`:ALELint`.
--- a/after/plugin/ale.vim
+++ b/after/plugin/ale.vim
@ -0,0 +1,37 @@
+" Author: w0rp <devw0rp@gmail.com>
+" Description: Follow-up checks for the plugin: warn about conflicting plugins.
+
+" A flag for ensuring that this is not run more than one time.
+if exists('g:loaded_ale_after')
+    finish
+endif
+
+" Set the flag so this file is not run more than one time.
+let g:loaded_ale_after = 1
+
+" Check if the flag is available and set to 0 to disable checking for and
+" emitting conflicting plugin warnings.
+if exists('g:ale_emit_conflict_warnings') && !g:ale_emit_conflict_warnings
+    finish
+endif
+
+" Conflicting Plugins Checks
+
+function! s:GetConflictingPluginWarning(plugin_name) abort
+    return 'ALE conflicts with ' . a:plugin_name
+    \   . '. Uninstall it, or disable this warning with '
+    \   . '`let g:ale_emit_conflict_warnings = 0` in your vimrc file, '
+    \   . '*before* plugins are loaded.'
+endfunction
+
+if exists('g:loaded_syntastic_plugin')
+    throw s:GetConflictingPluginWarning('Syntastic')
+endif
+
+if exists('g:loaded_neomake')
+    throw s:GetConflictingPluginWarning('Neomake')
+endif
+
+if exists('g:loaded_validator_plugin')
+    throw s:GetConflictingPluginWarning('Validator')
+endif
--- a/ale_linters/ansible/ansible_lint.vim
+++ b/ale_linters/ansible/ansible_lint.vim
@ -0,0 +1,48 @@
+" Author: Bjorn Neergaard <bjorn@neersighted.com>
+" Description: ansible-lint for ansible-yaml files
+
+function! ale_linters#ansible#ansible_lint#Handle(buffer, lines) abort
+    for l:line in a:lines[:10]
+        if match(l:line, '^Traceback') >= 0
+            return [{
+            \   'lnum': 1,
+            \   'text': 'An exception was thrown. See :ALEDetail',
+            \   'detail': join(a:lines, "\n"),
+            \}]
+        endif
+    endfor
+
+    " Matches patterns line the following:
+    "
+    " test.yml:35: [EANSIBLE0002] Trailing whitespace
+    let l:pattern = '\v^([a-zA-Z]?:?[^:]+):(\d+):?(\d+)?: \[?([[:alnum:]]+)\]? (.*)$'
+    let l:output = []
+
+    for l:match in ale#util#GetMatches(a:lines, l:pattern)
+        let l:code = l:match[4]
+
+        if l:code is# 'EANSIBLE002'
+        \&& !ale#Var(a:buffer, 'warn_about_trailing_whitespace')
+            " Skip warnings for trailing whitespace if the option is off.
+            continue
+        endif
+
+        if ale#path#IsBufferPath(a:buffer, l:match[1])
+            call add(l:output, {
+            \   'lnum': l:match[2] + 0,
+            \   'col': l:match[3] + 0,
+            \   'text': l:code . ': ' . l:match[5],
+            \   'type': l:code[:0] is# 'E' ? 'E' : 'W',
+            \})
+        endif
+    endfor
+
+    return l:output
+endfunction
+
+call ale#linter#Define('ansible', {
+\   'name': 'ansible',
+\   'executable': 'ansible',
+\   'command': 'ansible-lint -p %t',
+\   'callback': 'ale_linters#ansible#ansible_lint#Handle',
+\})
--- a/ale_linters/asciidoc/proselint.vim
+++ b/ale_linters/asciidoc/proselint.vim
@ -0,0 +1,9 @@
+" Author: Daniel M. Capella https://github.com/polyzen
+" Description: proselint for AsciiDoc files
+
+call ale#linter#Define('asciidoc', {
+\   'name': 'proselint',
+\   'executable': 'proselint',
+\   'command': 'proselint %t',
+\   'callback': 'ale#handlers#unix#HandleAsWarning',
+\})
--- a/ale_linters/asm/gcc.vim
+++ b/ale_linters/asm/gcc.vim
@ -0,0 +1,33 @@
+" Author: Lucas Kolstad <lkolstad@uw.edu>
+" Description: gcc linter for asm files
+
+let g:ale_asm_gcc_options = get(g:, 'ale_asm_gcc_options', '-Wall')
+
+function! ale_linters#asm#gcc#GetCommand(buffer) abort
+    return 'gcc -x assembler -fsyntax-only '
+    \    . '-iquote ' . ale#Escape(fnamemodify(bufname(a:buffer), ':p:h'))
+    \    . ' ' . ale#Var(a:buffer, 'asm_gcc_options') . ' -'
+endfunction
+
+function! ale_linters#asm#gcc#Handle(buffer, lines) abort
+    let l:pattern = '^.\+:\(\d\+\): \([^:]\+\): \(.\+\)$'
+    let l:output = []
+
+    for l:match in ale#util#GetMatches(a:lines, l:pattern)
+        call add(l:output, {
+        \ 'lnum': l:match[1] + 0,
+        \ 'type': l:match[2] =~? 'error' ? 'E' : 'W',
+        \ 'text': l:match[3],
+        \})
+    endfor
+
+    return l:output
+endfunction
+
+call ale#linter#Define('asm', {
+\    'name': 'gcc',
+\    'output_stream': 'stderr',
+\    'executable': 'gcc',
+\    'command_callback': 'ale_linters#asm#gcc#GetCommand',
+\    'callback': 'ale_linters#asm#gcc#Handle',
+\})
--- a/ale_linters/awk/gawk.vim
+++ b/ale_linters/awk/gawk.vim
@ -0,0 +1,26 @@
+" Author: kmarc <korondi.mark@gmail.com>
+" Description: This file adds support for using GNU awk with sripts.
+
+let g:ale_awk_gawk_executable =
+\   get(g:, 'ale_awk_gawk_executable', 'gawk')
+
+let g:ale_awk_gawk_options =
+\   get(g:, 'ale_awk_gawk_options', '')
+
+function! ale_linters#awk#gawk#GetExecutable(buffer) abort
+    return ale#Var(a:buffer, 'awk_gawk_executable')
+endfunction
+
+function! ale_linters#awk#gawk#GetCommand(buffer) abort
+    return ale_linters#awk#gawk#GetExecutable(a:buffer)
+    \   . ' ' . ale#Var(a:buffer, 'awk_gawk_options')
+    \   . ' ' . '-f %t --lint /dev/null'
+endfunction
+
+call ale#linter#Define('awk', {
+\   'name': 'gawk',
+\   'executable_callback': 'ale_linters#awk#gawk#GetExecutable',
+\   'command_callback': 'ale_linters#awk#gawk#GetCommand',
+\   'callback': 'ale#handlers#cpplint#HandleCppLintFormat',
+\   'output_stream': 'both'
+\})
--- a/ale_linters/c/clang.vim
+++ b/ale_linters/c/clang.vim
@ -0,0 +1,29 @@
+" Author: Masahiro H https://github.com/mshr-h
+" Description: clang linter for c files
+
+call ale#Set('c_clang_executable', 'clang')
+call ale#Set('c_clang_options', '-std=c11 -Wall')
+
+function! ale_linters#c#clang#GetExecutable(buffer) abort
+    return ale#Var(a:buffer, 'c_clang_executable')
+endfunction
+
+function! ale_linters#c#clang#GetCommand(buffer) abort
+    let l:paths = ale#c#FindLocalHeaderPaths(a:buffer)
+
+    " -iquote with the directory the file is in makes #include work for
+    "  headers in the same directory.
+    return ale#Escape(ale_linters#c#clang#GetExecutable(a:buffer))
+    \   . ' -S -x c -fsyntax-only '
+    \   . '-iquote ' . ale#Escape(fnamemodify(bufname(a:buffer), ':p:h')) . ' '
+    \   . ale#c#IncludeOptions(l:paths)
+    \   . ale#Var(a:buffer, 'c_clang_options') . ' -'
+endfunction
+
+call ale#linter#Define('c', {
+\   'name': 'clang',
+\   'output_stream': 'stderr',
+\   'executable_callback': 'ale_linters#c#clang#GetExecutable',
+\   'command_callback': 'ale_linters#c#clang#GetCommand',
+\   'callback': 'ale#handlers#gcc#HandleGCCFormat',
+\})
--- a/ale_linters/c/cppcheck.vim
+++ b/ale_linters/c/cppcheck.vim
@ -0,0 +1,39 @@
+" Author: Bart Libert <bart.libert@gmail.com>
+" Description: cppcheck linter for c files
+
+call ale#Set('c_cppcheck_executable', 'cppcheck')
+call ale#Set('c_cppcheck_options', '--enable=style')
+
+function! ale_linters#c#cppcheck#GetExecutable(buffer) abort
+    return ale#Var(a:buffer, 'c_cppcheck_executable')
+endfunction
+
+function! ale_linters#c#cppcheck#GetCommand(buffer) abort
+    " Search upwards from the file for compile_commands.json.
+    "
+    " If we find it, we'll `cd` to where the compile_commands.json file is,
+    " then use the file to set up import paths, etc.
+    let l:compile_commmands_path = ale#path#FindNearestFile(a:buffer, 'compile_commands.json')
+
+    let l:cd_command = !empty(l:compile_commmands_path)
+    \   ? ale#path#CdString(fnamemodify(l:compile_commmands_path, ':h'))
+    \   : ''
+    let l:compile_commands_option = !empty(l:compile_commmands_path)
+    \   ? '--project=compile_commands.json '
+    \   : ''
+
+    return l:cd_command
+    \   . ale#Escape(ale_linters#c#cppcheck#GetExecutable(a:buffer))
+    \   . ' -q --language=c '
+    \   . l:compile_commands_option
+    \   . ale#Var(a:buffer, 'c_cppcheck_options')
+    \   . ' %t'
+endfunction
+
+call ale#linter#Define('c', {
+\   'name': 'cppcheck',
+\   'output_stream': 'both',
+\   'executable_callback': 'ale_linters#c#cppcheck#GetExecutable',
+\   'command_callback': 'ale_linters#c#cppcheck#GetCommand',
+\   'callback': 'ale#handlers#cppcheck#HandleCppCheckFormat',
+\})
--- a/ale_linters/c/gcc.vim
+++ b/ale_linters/c/gcc.vim
@ -0,0 +1,29 @@
+" Author: w0rp <devw0rp@gmail.com>
+" Description: gcc linter for c files
+
+call ale#Set('c_gcc_executable', 'gcc')
+call ale#Set('c_gcc_options', '-std=c11 -Wall')
+
+function! ale_linters#c#gcc#GetExecutable(buffer) abort
+    return ale#Var(a:buffer, 'c_gcc_executable')
+endfunction
+
+function! ale_linters#c#gcc#GetCommand(buffer) abort
+    let l:paths = ale#c#FindLocalHeaderPaths(a:buffer)
+
+    " -iquote with the directory the file is in makes #include work for
+    "  headers in the same directory.
+    return ale#Escape(ale_linters#c#gcc#GetExecutable(a:buffer))
+    \   . ' -S -x c -fsyntax-only '
+    \   . '-iquote ' . ale#Escape(fnamemodify(bufname(a:buffer), ':p:h')) . ' '
+    \   . ale#c#IncludeOptions(l:paths)
+    \   . ale#Var(a:buffer, 'c_gcc_options') . ' -'
+endfunction
+
+call ale#linter#Define('c', {
+\   'name': 'gcc',
+\   'output_stream': 'stderr',
+\   'executable_callback': 'ale_linters#c#gcc#GetExecutable',
+\   'command_callback': 'ale_linters#c#gcc#GetCommand',
+\   'callback': 'ale#handlers#gcc#HandleGCCFormat',
+\})
--- a/ale_linters/chef/foodcritic.vim
+++ b/ale_linters/chef/foodcritic.vim
@ -0,0 +1,42 @@
+" Author: Edward Larkey <edwlarkey@mac.com>
+" Author: Jose Junior <jose.junior@gmail.com>
+" Description: This file adds the foodcritic linter for Chef files.
+
+" Support options!
+let g:ale_chef_foodcritic_options = get(g:, 'ale_chef_foodcritic_options', '')
+let g:ale_chef_foodcritic_executable = get(g:, 'ale_chef_foodcritic_executable', 'foodcritic')
+
+function! ale_linters#chef#foodcritic#Handle(buffer, lines) abort
+    " Matches patterns line the following:
+    "
+    " FC002: Avoid string interpolation where not required: httpd.rb:13
+    let l:pattern = '^\(.\+:\s.\+\):\s\(.\+\):\(\d\+\)$'
+    let l:output = []
+
+    for l:match in ale#util#GetMatches(a:lines, l:pattern)
+        let l:text = l:match[1]
+
+        call add(l:output, {
+        \   'lnum': l:match[3] + 0,
+        \   'text': l:text,
+        \   'type': 'W',
+        \})
+    endfor
+
+    return l:output
+endfunction
+
+function! ale_linters#chef#foodcritic#GetCommand(buffer) abort
+    return printf('%s %s %%t',
+    \   ale#Var(a:buffer, 'chef_foodcritic_executable'),
+    \   escape(ale#Var(a:buffer, 'chef_foodcritic_options'), '~')
+    \)
+endfunction
+
+
+call ale#linter#Define('chef', {
+\   'name': 'foodcritic',
+\   'executable': 'foodcritic',
+\   'command_callback': 'ale_linters#chef#foodcritic#GetCommand',
+\   'callback': 'ale_linters#chef#foodcritic#Handle',
+\})
--- a/ale_linters/cmake/cmakelint.vim
+++ b/ale_linters/cmake/cmakelint.vim
@ -0,0 +1,24 @@
+" Author: Kenneth Benzie <k.benzie83@gmail.com>
+" Description: cmakelint for cmake files
+
+let g:ale_cmake_cmakelint_executable =
+\   get(g:, 'ale_cmake_cmakelint_executable', 'cmakelint')
+
+let g:ale_cmake_cmakelint_options =
+\   get(g:, 'ale_cmake_cmakelint_options', '')
+
+function! ale_linters#cmake#cmakelint#Executable(buffer) abort
+    return ale#Var(a:buffer, 'cmake_cmakelint_executable')
+endfunction
+
+function! ale_linters#cmake#cmakelint#Command(buffer) abort
+    return ale_linters#cmake#cmakelint#Executable(a:buffer)
+    \   . ' ' . ale#Var(a:buffer, 'cmake_cmakelint_options') . ' %t'
+endfunction
+
+call ale#linter#Define('cmake', {
+\   'name': 'cmakelint',
+\   'executable_callback': 'ale_linters#cmake#cmakelint#Executable',
+\   'command_callback': 'ale_linters#cmake#cmakelint#Command',
+\   'callback': 'ale#handlers#unix#HandleAsWarning',
+\})
--- a/ale_linters/coffee/coffee.vim
+++ b/ale_linters/coffee/coffee.vim
@ -0,0 +1,23 @@
+" Author: KabbAmine - https://github.com/KabbAmine
+" Description: Coffee for checking coffee files
+
+function! ale_linters#coffee#coffee#GetExecutable(buffer) abort
+    return ale#path#ResolveLocalPath(
+    \   a:buffer,
+    \   'node_modules/.bin/coffee',
+    \   'coffee'
+    \)
+endfunction
+
+function! ale_linters#coffee#coffee#GetCommand(buffer) abort
+    return ale_linters#coffee#coffee#GetExecutable(a:buffer)
+    \   . ' -cp -s'
+endfunction
+
+call ale#linter#Define('coffee', {
+\   'name': 'coffee',
+\   'executable_callback': 'ale_linters#coffee#coffee#GetExecutable',
+\   'command_callback': 'ale_linters#coffee#coffee#GetCommand',
+\   'output_stream': 'stderr',
+\   'callback': 'ale#handlers#gcc#HandleGCCFormat',
+\})
--- a/ale_linters/coffee/coffeelint.vim
+++ b/ale_linters/coffee/coffeelint.vim
@ -0,0 +1,43 @@
+" Author: Prashanth Chandra https://github.com/prashcr
+" Description: coffeelint linter for coffeescript files
+
+function! ale_linters#coffee#coffeelint#GetExecutable(buffer) abort
+    return ale#path#ResolveLocalPath(
+    \   a:buffer,
+    \   'node_modules/.bin/coffeelint',
+    \   'coffeelint'
+    \)
+endfunction
+
+function! ale_linters#coffee#coffeelint#GetCommand(buffer) abort
+    return ale_linters#coffee#coffeelint#GetExecutable(a:buffer)
+    \   . ' --stdin --reporter csv'
+endfunction
+
+function! ale_linters#coffee#coffeelint#Handle(buffer, lines) abort
+    " Matches patterns like the following:
+    "
+    " path,lineNumber,lineNumberEnd,level,message
+    " stdin,14,,error,Throwing strings is forbidden
+    "
+    " Note that we currently ignore lineNumberEnd for multiline errors
+    let l:pattern = 'stdin,\(\d\+\),\(\d*\),\(.\{-1,}\),\(.\+\)'
+    let l:output = []
+
+    for l:match in ale#util#GetMatches(a:lines, l:pattern)
+        call add(l:output, {
+        \   'lnum': str2nr(l:match[1]),
+        \   'type': l:match[3] is# 'error' ? 'E' : 'W',
+        \   'text': l:match[4],
+        \})
+    endfor
+
+    return l:output
+endfunction
+
+call ale#linter#Define('coffee', {
+\   'name': 'coffeelint',
+\   'executable_callback': 'ale_linters#coffee#coffeelint#GetExecutable',
+\   'command_callback': 'ale_linters#coffee#coffeelint#GetCommand',
+\   'callback': 'ale_linters#coffee#coffeelint#Handle',
+\})
--- a/ale_linters/cpp/clang.vim
+++ b/ale_linters/cpp/clang.vim
@ -0,0 +1,29 @@
+" Author: Tomota Nakamura <https://github.com/tomotanakamura>
+" Description: clang linter for cpp files
+
+call ale#Set('cpp_clang_executable', 'clang++')
+call ale#Set('cpp_clang_options', '-std=c++14 -Wall')
+
+function! ale_linters#cpp#clang#GetExecutable(buffer) abort
+    return ale#Var(a:buffer, 'cpp_clang_executable')
+endfunction
+
+function! ale_linters#cpp#clang#GetCommand(buffer) abort
+    let l:paths = ale#c#FindLocalHeaderPaths(a:buffer)
+
+    " -iquote with the directory the file is in makes #include work for
+    "  headers in the same directory.
+    return ale#Escape(ale_linters#cpp#clang#GetExecutable(a:buffer))
+    \   . ' -S -x c++ -fsyntax-only '
+    \   . '-iquote ' . ale#Escape(fnamemodify(bufname(a:buffer), ':p:h')) . ' '
+    \   . ale#c#IncludeOptions(l:paths)
+    \   . ale#Var(a:buffer, 'cpp_clang_options') . ' -'
+endfunction
+
+call ale#linter#Define('cpp', {
+\   'name': 'clang',
+\   'output_stream': 'stderr',
+\   'executable_callback': 'ale_linters#cpp#clang#GetExecutable',
+\   'command_callback': 'ale_linters#cpp#clang#GetCommand',
+\   'callback': 'ale#handlers#gcc#HandleGCCFormat',
+\})
--- a/ale_linters/cpp/clangcheck.vim
+++ b/ale_linters/cpp/clangcheck.vim
@ -0,0 +1,39 @@
+" Author: gagbo <gagbobada@gmail.com>
+" Description: clang-check linter for cpp files
+
+call ale#Set('cpp_clangcheck_executable', 'clang-check')
+call ale#Set('cpp_clangcheck_options', '')
+call ale#Set('c_build_dir', '')
+
+function! ale_linters#cpp#clangcheck#GetExecutable(buffer) abort
+    return ale#Var(a:buffer, 'cpp_clangcheck_executable')
+endfunction
+
+function! ale_linters#cpp#clangcheck#GetCommand(buffer) abort
+    let l:user_options = ale#Var(a:buffer, 'cpp_clangcheck_options')
+
+    " Try to find compilation database to link automatically
+    let l:build_dir = ale#Var(a:buffer, 'c_build_dir')
+
+    if empty(l:build_dir)
+        let l:build_dir = ale#c#FindCompileCommands(a:buffer)
+    endif
+
+    " The extra arguments in the command are used to prevent .plist files from
+    " being generated. These are only added if no build directory can be
+    " detected.
+    return ale#Escape(ale_linters#cpp#clangcheck#GetExecutable(a:buffer))
+    \   . ' -analyze %s'
+    \   . (!empty(l:user_options) ? ' ' . l:user_options : '')
+    \   . (!empty(l:build_dir) ? ' -p ' . ale#Escape(l:build_dir) : '')
+    \   . (empty(l:build_dir) ? ' -extra-arg -Xanalyzer -extra-arg -analyzer-output=text' : '')
+endfunction
+
+call ale#linter#Define('cpp', {
+\   'name': 'clangcheck',
+\   'output_stream': 'stderr',
+\   'executable_callback': 'ale_linters#cpp#clangcheck#GetExecutable',
+\   'command_callback': 'ale_linters#cpp#clangcheck#GetCommand',
+\   'callback': 'ale#handlers#gcc#HandleGCCFormat',
+\   'lint_file': 1,
+\})
--- a/ale_linters/cpp/clangtidy.vim
+++ b/ale_linters/cpp/clangtidy.vim
@ -0,0 +1,58 @@
+" Author: vdeurzen <tim@kompiler.org>, w0rp <devw0rp@gmail.com>,
+" gagbo <gagbobada@gmail.com>
+" Description: clang-tidy linter for cpp files
+
+call ale#Set('cpp_clangtidy_executable', 'clang-tidy')
+" Set this option to check the checks clang-tidy will apply.
+call ale#Set('cpp_clangtidy_checks', ['*'])
+" Set this option to manually set some options for clang-tidy.
+" This will disable compile_commands.json detection.
+call ale#Set('cpp_clangtidy_options', '')
+call ale#Set('c_build_dir', '')
+
+function! ale_linters#cpp#clangtidy#GetExecutable(buffer) abort
+    return ale#Var(a:buffer, 'cpp_clangtidy_executable')
+endfunction
+
+function! s:GetBuildDirectory(buffer) abort
+    " Don't include build directory for header files, as compile_commands.json
+    " files don't consider headers to be translation units, and provide no
+    " commands for compiling header files.
+    if expand('#' . a:buffer) =~# '\v\.(h|hpp)$'
+        return ''
+    endif
+
+    let l:build_dir = ale#Var(a:buffer, 'c_build_dir')
+
+    " c_build_dir has the priority if defined
+    if !empty(l:build_dir)
+        return l:build_dir
+    endif
+
+    return ale#c#FindCompileCommands(a:buffer)
+endfunction
+
+function! ale_linters#cpp#clangtidy#GetCommand(buffer) abort
+    let l:checks = join(ale#Var(a:buffer, 'cpp_clangtidy_checks'), ',')
+    let l:build_dir = s:GetBuildDirectory(a:buffer)
+
+    " Get the extra options if we couldn't find a build directory.
+    let l:options = empty(l:build_dir)
+    \   ? ale#Var(a:buffer, 'cpp_clangtidy_options')
+    \   : ''
+
+    return ale#Escape(ale_linters#cpp#clangtidy#GetExecutable(a:buffer))
+    \   . (!empty(l:checks) ? ' -checks=' . ale#Escape(l:checks) : '')
+    \   . ' %s'
+    \   . (!empty(l:build_dir) ? ' -p ' . ale#Escape(l:build_dir) : '')
+    \   . (!empty(l:options) ? ' -- ' . l:options : '')
+endfunction
+
+call ale#linter#Define('cpp', {
+\   'name': 'clangtidy',
+\   'output_stream': 'stdout',
+\   'executable_callback': 'ale_linters#cpp#clangtidy#GetExecutable',
+\   'command_callback': 'ale_linters#cpp#clangtidy#GetCommand',
+\   'callback': 'ale#handlers#gcc#HandleGCCFormat',
+\   'lint_file': 1,
+\})
--- a/ale_linters/cpp/cppcheck.vim
+++ b/ale_linters/cpp/cppcheck.vim
@ -0,0 +1,39 @@
+" Author: Bart Libert <bart.libert@gmail.com>
+" Description: cppcheck linter for cpp files
+
+call ale#Set('cpp_cppcheck_executable', 'cppcheck')
+call ale#Set('cpp_cppcheck_options', '--enable=style')
+
+function! ale_linters#cpp#cppcheck#GetExecutable(buffer) abort
+    return ale#Var(a:buffer, 'cpp_cppcheck_executable')
+endfunction
+
+function! ale_linters#cpp#cppcheck#GetCommand(buffer) abort
+    " Search upwards from the file for compile_commands.json.
+    "
+    " If we find it, we'll `cd` to where the compile_commands.json file is,
+    " then use the file to set up import paths, etc.
+    let l:compile_commmands_path = ale#path#FindNearestFile(a:buffer, 'compile_commands.json')
+
+    let l:cd_command = !empty(l:compile_commmands_path)
+    \   ? ale#path#CdString(fnamemodify(l:compile_commmands_path, ':h'))
+    \   : ''
+    let l:compile_commands_option = !empty(l:compile_commmands_path)
+    \   ? '--project=compile_commands.json '
+    \   : ''
+
+    return l:cd_command
+    \   . ale#Escape(ale_linters#cpp#cppcheck#GetExecutable(a:buffer))
+    \   . ' -q --language=c++ '
+    \   . l:compile_commands_option
+    \   . ale#Var(a:buffer, 'cpp_cppcheck_options')
+    \   . ' %t'
+endfunction
+
+call ale#linter#Define('cpp', {
+\   'name': 'cppcheck',
+\   'output_stream': 'both',
+\   'executable_callback': 'ale_linters#cpp#cppcheck#GetExecutable',
+\   'command_callback': 'ale_linters#cpp#cppcheck#GetCommand',
+\   'callback': 'ale#handlers#cppcheck#HandleCppCheckFormat',
+\})
--- a/ale_linters/cpp/cpplint.vim
+++ b/ale_linters/cpp/cpplint.vim
@ -0,0 +1,26 @@
+" Author: Dawid Kurek https://github.com/dawikur
+" Description: cpplint for cpp files
+
+call ale#Set('cpp_cpplint_executable', 'cpplint')
+call ale#Set('cpp_cpplint_options', '')
+
+function! ale_linters#cpp#cpplint#GetExecutable(buffer) abort
+    return ale#Var(a:buffer, 'cpp_cpplint_executable')
+endfunction
+
+function! ale_linters#cpp#cpplint#GetCommand(buffer) abort
+    let l:options = ale#Var(a:buffer, 'cpp_cpplint_options')
+
+    return ale#Escape(ale_linters#cpp#cpplint#GetExecutable(a:buffer))
+    \   . (!empty(l:options) ? ' ' . l:options : '')
+    \   . ' %s'
+endfunction
+
+call ale#linter#Define('cpp', {
+\   'name': 'cpplint',
+\   'output_stream': 'stderr',
+\   'executable_callback': 'ale_linters#cpp#cpplint#GetExecutable',
+\   'command_callback': 'ale_linters#cpp#cpplint#GetCommand',
+\   'callback': 'ale#handlers#cpplint#HandleCppLintFormat',
+\   'lint_file': 1,
+\})
--- a/ale_linters/cpp/gcc.vim
+++ b/ale_linters/cpp/gcc.vim
@ -0,0 +1,29 @@
+" Author: geam <mdelage@student.42.fr>
+" Description: gcc linter for cpp files
+"
+call ale#Set('cpp_gcc_executable', 'gcc')
+call ale#Set('cpp_gcc_options', '-std=c++14 -Wall')
+
+function! ale_linters#cpp#gcc#GetExecutable(buffer) abort
+    return ale#Var(a:buffer, 'cpp_gcc_executable')
+endfunction
+
+function! ale_linters#cpp#gcc#GetCommand(buffer) abort
+    let l:paths = ale#c#FindLocalHeaderPaths(a:buffer)
+
+    " -iquote with the directory the file is in makes #include work for
+    "  headers in the same directory.
+    return ale#Escape(ale_linters#cpp#gcc#GetExecutable(a:buffer))
+    \   . ' -S -x c++ -fsyntax-only '
+    \   . '-iquote ' . ale#Escape(fnamemodify(bufname(a:buffer), ':p:h')) . ' '
+    \   . ale#c#IncludeOptions(l:paths)
+    \   . ale#Var(a:buffer, 'cpp_gcc_options') . ' -'
+endfunction
+
+call ale#linter#Define('cpp', {
+\   'name': 'g++',
+\   'output_stream': 'stderr',
+\   'executable_callback': 'ale_linters#cpp#gcc#GetExecutable',
+\   'command_callback': 'ale_linters#cpp#gcc#GetCommand',
+\   'callback': 'ale#handlers#gcc#HandleGCCFormat',
+\})
--- a/ale_linters/crystal/crystal.vim
+++ b/ale_linters/crystal/crystal.vim
@ -0,0 +1,31 @@
+" Author: Jordan Andree <https://github.com/jordanandree>, David Alexander <opensource@thelonelyghost.com>
+" Description: This file adds support for checking Crystal with crystal build
+
+function! ale_linters#crystal#crystal#Handle(buffer, lines) abort
+    let l:output = []
+
+    for l:error in ale#util#FuzzyJSONDecode(a:lines, [])
+        call add(l:output, {
+        \   'lnum': l:error.line + 0,
+        \   'col': l:error.column + 0,
+        \   'text': l:error.message,
+        \})
+    endfor
+
+    return l:output
+endfunction
+
+function! ale_linters#crystal#crystal#GetCommand(buffer) abort
+    return 'crystal build -f json --no-codegen --no-color -o '
+    \   . ale#Escape(g:ale#util#nul_file)
+    \   . ' %s'
+endfunction
+
+call ale#linter#Define('crystal', {
+\   'name': 'crystal',
+\   'executable': 'crystal',
+\   'output_stream': 'both',
+\   'lint_file': 1,
+\   'command_callback': 'ale_linters#crystal#crystal#GetCommand',
+\   'callback': 'ale_linters#crystal#crystal#Handle',
+\})
--- a/ale_linters/cs/mcs.vim
+++ b/ale_linters/cs/mcs.vim
@ -0,0 +1,32 @@
+let g:ale_cs_mcs_options = get(g:, 'ale_cs_mcs_options', '')
+
+function! ale_linters#cs#mcs#GetCommand(buffer) abort
+    return 'mcs -unsafe --parse ' . ale#Var(a:buffer, 'cs_mcs_options') . ' %t'
+endfunction
+
+function! ale_linters#cs#mcs#Handle(buffer, lines) abort
+    " Look for lines like the following.
+    "
+    " Tests.cs(12,29): error CSXXXX: ; expected
+    let l:pattern = '^.\+.cs(\(\d\+\),\(\d\+\)): \(.\+\): \(.\+\)'
+    let l:output = []
+
+    for l:match in ale#util#GetMatches(a:lines, l:pattern)
+        call add(l:output, {
+        \   'lnum': l:match[1] + 0,
+        \   'col': l:match[2] + 0,
+        \   'text': l:match[3] . ': ' . l:match[4],
+        \   'type': l:match[3] =~# '^error' ? 'E' : 'W',
+        \})
+    endfor
+
+    return l:output
+endfunction
+
+call ale#linter#Define('cs',{
+\   'name': 'mcs',
+\   'output_stream': 'stderr',
+\   'executable': 'mcs',
+\   'command_callback': 'ale_linters#cs#mcs#GetCommand',
+\   'callback': 'ale_linters#cs#mcs#Handle',
+\})
--- a/ale_linters/css/csslint.vim
+++ b/ale_linters/css/csslint.vim
@ -0,0 +1,18 @@
+" Author: w0rp <devw0rp@gmail.com>
+" Description: This file adds support for checking CSS code with csslint.
+
+function! ale_linters#css#csslint#GetCommand(buffer) abort
+    let l:csslintrc = ale#path#FindNearestFile(a:buffer, '.csslintrc')
+    let l:config_option = !empty(l:csslintrc)
+    \   ? '--config=' . ale#Escape(l:csslintrc)
+    \   : ''
+
+    return 'csslint --format=compact ' . l:config_option . ' %t'
+endfunction
+
+call ale#linter#Define('css', {
+\   'name': 'csslint',
+\   'executable': 'csslint',
+\   'command_callback': 'ale_linters#css#csslint#GetCommand',
+\   'callback': 'ale#handlers#css#HandleCSSLintFormat',
+\})
--- a/ale_linters/css/stylelint.vim
+++ b/ale_linters/css/stylelint.vim
@ -0,0 +1,24 @@
+" Author: diartyz <diartyz@gmail.com>
+
+call ale#Set('css_stylelint_executable', 'stylelint')
+call ale#Set('css_stylelint_options', '')
+call ale#Set('css_stylelint_use_global', 0)
+
+function! ale_linters#css#stylelint#GetExecutable(buffer) abort
+    return ale#node#FindExecutable(a:buffer, 'css_stylelint', [
+    \   'node_modules/.bin/stylelint',
+    \])
+endfunction
+
+function! ale_linters#css#stylelint#GetCommand(buffer) abort
+    return ale_linters#css#stylelint#GetExecutable(a:buffer)
+    \   . ' ' . ale#Var(a:buffer, 'css_stylelint_options')
+    \   . ' --stdin-filename %s'
+endfunction
+
+call ale#linter#Define('css', {
+\   'name': 'stylelint',
+\   'executable_callback': 'ale_linters#css#stylelint#GetExecutable',
+\   'command_callback': 'ale_linters#css#stylelint#GetCommand',
+\   'callback': 'ale#handlers#css#HandleStyleLintFormat',
+\})
--- a/ale_linters/d/dmd.vim
+++ b/ale_linters/d/dmd.vim
@ -0,0 +1,79 @@
+" Author: w0rp <devw0rp@gmail.com>
+" Description: "dmd for D files"
+
+function! s:FindDUBConfig(buffer) abort
+    " Find a DUB configuration file in ancestor paths.
+    " The most DUB-specific names will be tried first.
+    for l:possible_filename in ['dub.sdl', 'dub.json', 'package.json']
+        let l:dub_file = ale#path#FindNearestFile(a:buffer, l:possible_filename)
+
+        if !empty(l:dub_file)
+            return l:dub_file
+        endif
+    endfor
+
+    return ''
+endfunction
+
+function! ale_linters#d#dmd#DUBCommand(buffer) abort
+    " If we can't run dub, then skip this command.
+    if !executable('dub')
+        " Returning an empty string skips to the DMD command.
+        return ''
+    endif
+
+    let l:dub_file = s:FindDUBConfig(a:buffer)
+
+    if empty(l:dub_file)
+        return ''
+    endif
+
+    " To support older dub versions, we just change the directory to
+    " the directory where we found the dub config, and then run `dub describe`
+    " from that directory.
+    return 'cd ' . ale#Escape(fnamemodify(l:dub_file, ':h'))
+    \   . ' && dub describe --import-paths'
+endfunction
+
+function! ale_linters#d#dmd#DMDCommand(buffer, dub_output) abort
+    let l:import_list = []
+
+    " Build a list of import paths generated from DUB, if available.
+    for l:line in a:dub_output
+        if !empty(l:line)
+            " The arguments must be '-Ifilename', not '-I filename'
+            call add(l:import_list, '-I' . ale#Escape(l:line))
+        endif
+    endfor
+
+    return 'dmd '. join(l:import_list) . ' -o- -vcolumns -c %t'
+endfunction
+
+function! ale_linters#d#dmd#Handle(buffer, lines) abort
+    " Matches patterns lines like the following:
+    " /tmp/tmp.qclsa7qLP7/file.d(1): Error: function declaration without return type. (Note that constructors are always named 'this')
+    " /tmp/tmp.G1L5xIizvB.d(8,8): Error: module weak_reference is in file 'dstruct/weak_reference.d' which cannot be read
+    let l:pattern = '^[^(]\+(\([0-9]\+\)\,\?\([0-9]*\)): \([^:]\+\): \(.\+\)'
+    let l:output = []
+
+    for l:match in ale#util#GetMatches(a:lines, l:pattern)
+        call add(l:output, {
+        \   'lnum': l:match[1],
+        \   'col': l:match[2],
+        \   'type': l:match[3] is# 'Warning' ? 'W' : 'E',
+        \   'text': l:match[4],
+        \})
+    endfor
+
+    return l:output
+endfunction
+
+call ale#linter#Define('d', {
+\   'name': 'dmd',
+\   'executable': 'dmd',
+\   'command_chain': [
+\       {'callback': 'ale_linters#d#dmd#DUBCommand', 'output_stream': 'stdout'},
+\       {'callback': 'ale_linters#d#dmd#DMDCommand', 'output_stream': 'stderr'},
+\   ],
+\   'callback': 'ale_linters#d#dmd#Handle',
+\})
--- a/ale_linters/dart/dartanalyzer.vim
+++ b/ale_linters/dart/dartanalyzer.vim
@ -0,0 +1,40 @@
+" Author: w0rp <devw0rp@gmail.com>
+" Description: Check Dart files with dartanalyzer
+
+call ale#Set('dart_dartanalyzer_executable', 'dartanalyzer')
+
+function! ale_linters#dart#dartanalyzer#GetExecutable(buffer) abort
+    return ale#Var(a:buffer, 'dart_dartanalyzer_executable')
+endfunction
+
+function! ale_linters#dart#dartanalyzer#GetCommand(buffer) abort
+    let l:executable = ale_linters#dart#dartanalyzer#GetExecutable(a:buffer)
+    let l:path = ale#path#FindNearestFile(a:buffer, '.packages')
+
+    return ale#Escape(l:executable)
+    \   . (!empty(l:path) ? ' --packages ' . ale#Escape(l:path) : '')
+    \   . ' %t'
+endfunction
+
+function! ale_linters#dart#dartanalyzer#Handle(buffer, lines) abort
+    let l:pattern = '\v^  ([a-z]+) . (.+) at (.+):(\d+):(\d+) . (.+)$'
+    let l:output = []
+
+    for l:match in ale#util#GetMatches(a:lines, l:pattern)
+        call add(l:output, {
+        \   'type': l:match[1] is# 'error' ? 'E' : 'W',
+        \   'text': l:match[6] . ': ' . l:match[2],
+        \   'lnum': str2nr(l:match[4]),
+        \   'col': str2nr(l:match[5]),
+        \})
+    endfor
+
+    return l:output
+endfunction
+
+call ale#linter#Define('dart', {
+\   'name': 'dartanalyzer',
+\   'executable_callback': 'ale_linters#dart#dartanalyzer#GetExecutable',
+\   'command_callback': 'ale_linters#dart#dartanalyzer#GetCommand',
+\   'callback': 'ale_linters#dart#dartanalyzer#Handle',
+\})
--- a/ale_linters/dockerfile/hadolint.vim
+++ b/ale_linters/dockerfile/hadolint.vim
@ -0,0 +1,77 @@
+" Author: hauleth - https://github.com/hauleth
+
+" always, yes, never
+call ale#Set('dockerfile_hadolint_use_docker', 'never')
+call ale#Set('dockerfile_hadolint_docker_image', 'lukasmartinelli/hadolint')
+
+function! ale_linters#dockerfile#hadolint#Handle(buffer, lines) abort
+    " Matches patterns line the following:
+    "
+    " stdin:19: F: Pipe chain should start with a raw value.
+    let l:pattern = '\v^/dev/stdin:?(\d+)? (\S+) (.+)$'
+    let l:output = []
+
+    for l:match in ale#util#GetMatches(a:lines, l:pattern)
+        let l:lnum = 0
+
+        if l:match[1] isnot# ''
+            let l:lnum = l:match[1] + 0
+        endif
+
+        let l:type = 'W'
+        let l:text = l:match[3]
+
+        call add(l:output, {
+        \   'lnum': l:lnum,
+        \   'col': 0,
+        \   'type': l:type,
+        \   'text': l:text,
+        \   'nr': l:match[2],
+        \})
+    endfor
+
+    return l:output
+endfunction
+
+" This is a little different than the typical 'executable' callback.  We want
+" to afford the user the chance to say always use docker, never use docker,
+" and use docker if the hadolint executable is not present on the system.
+"
+" In the case of neither docker nor hadolint executables being present, it
+" really doesn't matter which we return -- either will have the effect of
+" 'nope, can't use this linter!'.
+
+function! ale_linters#dockerfile#hadolint#GetExecutable(buffer) abort
+    let l:use_docker = ale#Var(a:buffer, 'dockerfile_hadolint_use_docker')
+
+    " check for mandatory directives
+    if l:use_docker is# 'never'
+        return 'hadolint'
+    elseif l:use_docker is# 'always'
+        return 'docker'
+    endif
+
+    " if we reach here, we want to use 'hadolint' if present...
+    if executable('hadolint')
+        return 'hadolint'
+    endif
+
+    "... and 'docker' as a fallback.
+    return 'docker'
+endfunction
+
+function! ale_linters#dockerfile#hadolint#GetCommand(buffer) abort
+    let l:command = ale_linters#dockerfile#hadolint#GetExecutable(a:buffer)
+    if l:command is# 'docker'
+        return 'docker run --rm -i ' . ale#Var(a:buffer, 'dockerfile_hadolint_docker_image')
+    endif
+    return 'hadolint -'
+endfunction
+
+
+call ale#linter#Define('dockerfile', {
+\   'name': 'hadolint',
+\   'executable_callback': 'ale_linters#dockerfile#hadolint#GetExecutable',
+\   'command_callback': 'ale_linters#dockerfile#hadolint#GetCommand',
+\   'callback': 'ale_linters#dockerfile#hadolint#Handle',
+\})
--- a/ale_linters/elixir/credo.vim
+++ b/ale_linters/elixir/credo.vim
@ -0,0 +1,37 @@
+" Author: hauleth - https://github.com/hauleth
+
+function! ale_linters#elixir#credo#Handle(buffer, lines) abort
+    " Matches patterns line the following:
+    "
+    " lib/filename.ex:19:7: F: Pipe chain should start with a raw value.
+    let l:pattern = '\v:(\d+):?(\d+)?: (.): (.+)$'
+    let l:output = []
+
+    for l:match in ale#util#GetMatches(a:lines, l:pattern)
+        let l:type = l:match[3]
+        let l:text = l:match[4]
+
+        if l:type is# 'C'
+            let l:type = 'E'
+        elseif l:type is# 'R'
+            let l:type = 'W'
+        endif
+
+        call add(l:output, {
+        \   'bufnr': a:buffer,
+        \   'lnum': l:match[1] + 0,
+        \   'col': l:match[2] + 0,
+        \   'type': l:type,
+        \   'text': l:text,
+        \})
+    endfor
+
+    return l:output
+endfunction
+
+call ale#linter#Define('elixir', {
+\   'name': 'credo',
+\   'executable': 'mix',
+\   'command': 'mix credo suggest --format=flycheck --read-from-stdin %s',
+\   'callback': 'ale_linters#elixir#credo#Handle',
+\})
--- a/ale_linters/elixir/dogma.vim
+++ b/ale_linters/elixir/dogma.vim
@ -0,0 +1,38 @@
+" Author: archseer - https://github.com/archSeer
+
+function! ale_linters#elixir#dogma#Handle(buffer, lines) abort
+    " Matches patterns line the following:
+    "
+    " lib/filename.ex:19:7: F: Pipe chain should start with a raw value.
+    let l:pattern = '\v:(\d+):?(\d+)?: (.): (.+)$'
+    let l:output = []
+
+    for l:match in ale#util#GetMatches(a:lines, l:pattern)
+        let l:type = l:match[3]
+        let l:text = l:match[4]
+
+        if l:type is# 'C'
+            let l:type = 'E'
+        elseif l:type is# 'R'
+            let l:type = 'W'
+        endif
+
+        call add(l:output, {
+        \   'bufnr': a:buffer,
+        \   'lnum': l:match[1] + 0,
+        \   'col': l:match[2] + 0,
+        \   'type': l:type,
+        \   'text': l:text,
+        \})
+    endfor
+
+    return l:output
+endfunction
+
+call ale#linter#Define('elixir', {
+\   'name': 'dogma',
+\   'executable': 'mix',
+\   'command': 'mix dogma %s --format=flycheck',
+\   'lint_file': 1,
+\   'callback': 'ale_linters#elixir#dogma#Handle',
+\})
--- a/ale_linters/elm/make.vim
+++ b/ale_linters/elm/make.vim
@ -0,0 +1,77 @@
+" Author: buffalocoder - https://github.com/buffalocoder
+" Description: Elm linting in Ale. Closely follows the Syntastic checker in https://github.com/ElmCast/elm-vim.
+
+function! ale_linters#elm#make#Handle(buffer, lines) abort
+    let l:output = []
+    let l:is_windows = has('win32')
+    let l:temp_dir = l:is_windows ? $TMP : $TMPDIR
+    let l:unparsed_lines = []
+    for l:line in a:lines
+        if l:line[0] is# '['
+            let l:errors = json_decode(l:line)
+
+            for l:error in l:errors
+                " Check if file is from the temp directory.
+                " Filters out any errors not related to the buffer.
+                if l:is_windows
+                    let l:file_is_buffer = l:error.file[0:len(l:temp_dir) - 1] is? l:temp_dir
+                else
+                    let l:file_is_buffer = l:error.file[0:len(l:temp_dir) - 1] is# l:temp_dir
+                endif
+
+                if l:file_is_buffer
+                    call add(l:output, {
+                    \    'lnum': l:error.region.start.line,
+                    \    'col': l:error.region.start.column,
+                    \    'end_lnum': l:error.region.end.line,
+                    \    'end_col': l:error.region.end.column,
+                    \    'type': (l:error.type is? 'error') ? 'E' : 'W',
+                    \    'text': l:error.overview,
+                    \    'detail': l:error.overview . "\n\n" . l:error.details
+                    \})
+                endif
+            endfor
+        elseif l:line isnot# 'Successfully generated /dev/null'
+            call add(l:unparsed_lines, l:line)
+        endif
+    endfor
+
+    if len(l:unparsed_lines) > 0
+        call add(l:output, {
+        \    'lnum': 1,
+        \    'type': 'E',
+        \    'text': l:unparsed_lines[0],
+        \    'detail': join(l:unparsed_lines, "\n")
+        \})
+    endif
+
+    return l:output
+endfunction
+
+" Return the command to execute the linter in the projects directory.
+" If it doesn't, then this will fail when imports are needed.
+function! ale_linters#elm#make#GetCommand(buffer) abort
+    let l:elm_package = ale#path#FindNearestFile(a:buffer, 'elm-package.json')
+    if empty(l:elm_package)
+        let l:dir_set_cmd = ''
+    else
+        let l:root_dir = fnamemodify(l:elm_package, ':p:h')
+        let l:dir_set_cmd = 'cd ' . ale#Escape(l:root_dir) . ' && '
+    endif
+
+    " The elm-make compiler, at the time of this writing, uses '/dev/null' as
+    " a sort of flag to tell the compiler not to generate an output file,
+    " which is why this is hard coded here.
+    " Source: https://github.com/elm-lang/elm-make/blob/master/src/Flags.hs
+    let l:elm_cmd = 'elm-make --report=json --output='.ale#Escape('/dev/null')
+
+    return l:dir_set_cmd . ' ' . l:elm_cmd . ' %t'
+endfunction
+
+call ale#linter#Define('elm', {
+\    'name': 'make',
+\    'executable': 'elm-make',
+\    'output_stream': 'both',
+\    'command_callback': 'ale_linters#elm#make#GetCommand',
+\    'callback': 'ale_linters#elm#make#Handle'
+\})
--- a/ale_linters/erlang/erlc.vim
+++ b/ale_linters/erlang/erlc.vim
@ -0,0 +1,96 @@
+" Author: Magnus Ottenklinger - https://github.com/evnu
+
+let g:ale_erlang_erlc_options = get(g:, 'ale_erlang_erlc_options', '')
+
+function! ale_linters#erlang#erlc#GetCommand(buffer) abort
+    let l:output_file = tempname()
+    call ale#engine#ManageFile(a:buffer, l:output_file)
+
+    return 'erlc -o ' . ale#Escape(l:output_file)
+    \   . ' ' . ale#Var(a:buffer, 'erlang_erlc_options')
+    \   . ' %t'
+endfunction
+
+function! ale_linters#erlang#erlc#Handle(buffer, lines) abort
+    " Matches patterns like the following:
+    "
+    " error.erl:4: variable 'B' is unbound
+    " error.erl:3: Warning: function main/0 is unused
+    " error.erl:4: Warning: variable 'A' is unused
+    let l:pattern = '\v^([^:]+):(\d+): (Warning: )?(.+)$'
+
+    " parse_transforms are a special case. The error message does not indicate a location:
+    " error.erl: undefined parse transform 'some_parse_transform'
+    let l:pattern_parse_transform = '\v(undefined parse transform .*)$'
+    let l:output = []
+
+    let l:pattern_no_module_definition = '\v(no module definition)$'
+    let l:pattern_unused = '\v(.* is unused)$'
+
+    let l:is_hrl = fnamemodify(bufname(a:buffer), ':e') is# 'hrl'
+
+    for l:line in a:lines
+        let l:match = matchlist(l:line, l:pattern)
+
+        " Determine if the output indicates an error. We distinguish between two cases:
+        "
+        " 1) normal errors match l:pattern
+        " 2) parse_transform errors match l:pattern_parse_transform
+        "
+        " If none of the patterns above match, the line can be ignored
+        if len(l:match) == 0 " not a 'normal' warning or error
+            let l:match_parse_transform = matchlist(l:line, l:pattern_parse_transform)
+
+            if len(l:match_parse_transform) == 0 " also not a parse_transform error
+                continue
+            endif
+
+            call add(l:output, {
+            \   'bufnr': a:buffer,
+            \   'lnum': 0,
+            \   'col': 0,
+            \   'type': 'E',
+            \   'text': l:match_parse_transform[0],
+            \})
+
+            continue
+        endif
+
+        let l:line = l:match[2]
+        let l:warning_or_text = l:match[3]
+        let l:text = l:match[4]
+
+        " If this file is a header .hrl, ignore the following expected messages:
+        " - 'no module definition'
+        " - 'X is unused'
+        if l:is_hrl && (
+        \   match(l:text, l:pattern_no_module_definition) != -1
+        \   || match(l:text, l:pattern_unused) != -1
+        \)
+            continue
+        endif
+
+        if !empty(l:warning_or_text)
+            let l:type = 'W'
+        else
+            let l:type = 'E'
+        endif
+
+        call add(l:output, {
+        \   'bufnr': a:buffer,
+        \   'lnum': l:line,
+        \   'col': 0,
+        \   'type': l:type,
+        \   'text': l:text,
+        \})
+    endfor
+
+    return l:output
+endfunction
+
+call ale#linter#Define('erlang', {
+\   'name': 'erlc',
+\   'executable': 'erlc',
+\   'command_callback': 'ale_linters#erlang#erlc#GetCommand',
+\   'callback': 'ale_linters#erlang#erlc#Handle',
+\})
--- a/ale_linters/erlang/syntaxerl.vim
+++ b/ale_linters/erlang/syntaxerl.vim
@ -0,0 +1,53 @@
+" Author: Dmitri Vereshchagin <dmitri.vereshchagin@gmail.com>
+" Description: SyntaxErl linter for Erlang files
+
+call ale#Set('erlang_syntaxerl_executable', 'syntaxerl')
+
+
+function! ale_linters#erlang#syntaxerl#GetExecutable(buffer) abort
+    return ale#Var(a:buffer, 'erlang_syntaxerl_executable')
+endfunction
+
+
+function! ale_linters#erlang#syntaxerl#FeatureCheck(buffer) abort
+    return s:GetEscapedExecutable(a:buffer) . ' -h'
+endfunction
+
+
+function! ale_linters#erlang#syntaxerl#GetCommand(buffer, output) abort
+    let l:use_b_option = match(a:output, '\C\V-b, --base\>') > -1
+
+    return s:GetEscapedExecutable(a:buffer) . (l:use_b_option ? ' -b %s %t' : ' %t')
+endfunction
+
+
+function! ale_linters#erlang#syntaxerl#Handle(buffer, lines) abort
+    let l:pattern = '\v\C:(\d+):( warning:)? (.+)'
+    let l:loclist = []
+
+    for l:match in ale#util#GetMatches(a:lines, l:pattern)
+        call add(l:loclist, {
+        \   'lnum': l:match[1] + 0,
+        \   'text': l:match[3],
+        \   'type': empty(l:match[2]) ? 'E' : 'W',
+        \})
+    endfor
+
+    return l:loclist
+endfunction
+
+
+function! s:GetEscapedExecutable(buffer) abort
+    return ale#Escape(ale_linters#erlang#syntaxerl#GetExecutable(a:buffer))
+endfunction
+
+
+call ale#linter#Define('erlang', {
+\   'name': 'syntaxerl',
+\   'executable_callback': 'ale_linters#erlang#syntaxerl#GetExecutable',
+\   'command_chain': [
+\       {'callback': 'ale_linters#erlang#syntaxerl#FeatureCheck'},
+\       {'callback': 'ale_linters#erlang#syntaxerl#GetCommand'},
+\   ],
+\   'callback': 'ale_linters#erlang#syntaxerl#Handle',
+\})
--- a/ale_linters/eruby/erubis.vim
+++ b/ale_linters/eruby/erubis.vim
@ -0,0 +1,11 @@
+" Author: Jake Zimmerman <jake@zimmerman.io>
+" Description: eruby checker using `erubis`, instead of `erb`
+
+call ale#linter#Define('eruby', {
+\   'name': 'erubis',
+\   'executable': 'erubis',
+\   'output_stream': 'stderr',
+\   'command': 'erubis -x %t | ruby -c',
+\   'callback': 'ale#handlers#ruby#HandleSyntaxErrors',
+\})
+
--- a/ale_linters/eruby/erubylint.vim
+++ b/ale_linters/eruby/erubylint.vim
@ -0,0 +1,11 @@
+" Author: Matthias Guenther - https://wikimatze.de
+" Description: erb-lint for eruby/erb files
+
+call ale#linter#Define('eruby', {
+\   'name': 'erubylint',
+\   'executable': 'erb',
+\    'output_stream': 'stderr',
+\   'command': 'erb -P -x %t | ruby -c',
+\   'callback': 'ale#handlers#ruby#HandleSyntaxErrors',
+\})
+
--- a/ale_linters/fortran/gcc.vim
+++ b/ale_linters/fortran/gcc.vim
@ -0,0 +1,86 @@
+" Author: w0rp <devw0rp@gmail.com>
+" Description: gcc for Fortran files
+
+" This option can be set to 0 to use -ffixed-form
+if !exists('g:ale_fortran_gcc_use_free_form')
+    let g:ale_fortran_gcc_use_free_form = 1
+endif
+
+if !exists('g:ale_fortran_gcc_executable')
+    let g:ale_fortran_gcc_executable = 'gcc'
+endif
+
+" Set this option to change the GCC options for warnings for Fortran.
+if !exists('g:ale_fortran_gcc_options')
+    let g:ale_fortran_gcc_options = '-Wall'
+endif
+
+function! ale_linters#fortran#gcc#Handle(buffer, lines) abort
+    " We have to match a starting line and a later ending line together,
+    " like so.
+    "
+    " :21.34:
+    " Error: Expected comma in I/O list at (1)
+    let l:line_marker_pattern = ':\(\d\+\)[.:]\=\(\d\+\)\=:\=$'
+    let l:message_pattern = '^\(Error\|Warning\): \(.\+\)$'
+    let l:looking_for_message = 0
+    let l:last_loclist_obj = {}
+
+    let l:output = []
+
+    for l:line in a:lines
+        if l:looking_for_message
+            let l:match = matchlist(l:line, l:message_pattern)
+        else
+            let l:match = matchlist(l:line, l:line_marker_pattern)
+        endif
+
+        if len(l:match) == 0
+            continue
+        endif
+
+        if l:looking_for_message
+            let l:looking_for_message = 0
+
+            " Now we have the text, we can set it and add the error.
+            let l:last_loclist_obj.text = l:match[2]
+            let l:last_loclist_obj.type = l:match[1] is# 'Warning' ? 'W' : 'E'
+            call add(l:output, l:last_loclist_obj)
+        else
+            let l:last_loclist_obj = {
+            \   'bufnr': a:buffer,
+            \   'lnum': l:match[1] + 0,
+            \   'col': l:match[2] + 0,
+            \}
+
+            " Start looking for the message and error type.
+            let l:looking_for_message = 1
+        endif
+    endfor
+
+    return l:output
+endfunction
+
+function! ale_linters#fortran#gcc#GetExecutable(buffer) abort
+    return ale#Var(a:buffer, 'fortran_gcc_executable')
+endfunction
+
+function! ale_linters#fortran#gcc#GetCommand(buffer) abort
+    let l:layout_option = ale#Var(a:buffer, 'fortran_gcc_use_free_form')
+    \   ? '-ffree-form'
+    \   : '-ffixed-form'
+
+    return ale_linters#fortran#gcc#GetExecutable(a:buffer)
+    \   . ' -S -x f95 -fsyntax-only '
+    \   . l:layout_option . ' '
+    \   . ale#Var(a:buffer, 'fortran_gcc_options') . ' '
+    \   . '-'
+endfunction
+
+call ale#linter#Define('fortran', {
+\   'name': 'gcc',
+\   'output_stream': 'stderr',
+\   'executable_callback': 'ale_linters#fortran#gcc#GetExecutable',
+\   'command_callback': 'ale_linters#fortran#gcc#GetCommand',
+\   'callback': 'ale_linters#fortran#gcc#Handle',
+\})
--- a/ale_linters/fuse/fusionlint.vim
+++ b/ale_linters/fuse/fusionlint.vim
@ -0,0 +1,41 @@
+" Author: RyanSquared <vandor2012@gmail.com>
+" Description: `fusion-lint` linter for FusionScript files
+
+let g:ale_fuse_fusionlint_executable =
+\   get(g:, 'ale_fuse_fusionlint_executable', 'fusion-lint')
+
+let g:ale_fuse_fusionlint_options =
+\   get(g:, 'ale_fuse_fusionlint_options', '')
+
+function! ale_linters#fuse#fusionlint#GetExecutable(buffer) abort
+    return ale#Var(a:buffer, 'fuse_fusionlint_executable')
+endfunction
+
+function! ale_linters#fuse#fusionlint#GetCommand(buffer) abort
+    return ale#Escape(ale_linters#fuse#fusionlint#GetExecutable(a:buffer))
+    \   . ' ' . ale#Var(a:buffer, 'fuse_fusionlint_options')
+    \   . ' --filename %s -i'
+endfunction
+
+function! ale_linters#fuse#fusionlint#Handle(buffer, lines) abort
+    let l:pattern = '^.*:\(\d\+\):\(\d\+\): (\([WE]\)\d\+) \(.\+\)$'
+    let l:output = []
+
+    for l:match in ale#util#GetMatches(a:lines, l:pattern)
+        call add(l:output, {
+        \   'lnum': l:match[1] + 0,
+        \   'col': l:match[2] + 0,
+        \   'text': l:match[4],
+        \   'type': l:match[3],
+        \})
+    endfor
+
+    return l:output
+endfunction
+
+call ale#linter#Define('fuse', {
+\   'name': 'fusionlint',
+\   'executable_callback': 'ale_linters#fuse#fusionlint#GetExecutable',
+\   'command_callback': 'ale_linters#fuse#fusionlint#GetCommand',
+\   'callback': 'ale_linters#fuse#fusionlint#Handle',
+\})
--- a/ale_linters/go/gobuild.vim
+++ b/ale_linters/go/gobuild.vim
@ -0,0 +1,70 @@
+" Author: Joshua Rubin <joshua@rubixconsulting.com>, Ben Reedy <https://github.com/breed808>
+" Description: go build for Go files
+
+" inspired by work from dzhou121 <dzhou121@gmail.com>
+
+function! ale_linters#go#gobuild#GoEnv(buffer) abort
+    if exists('s:go_env')
+        return ''
+    endif
+
+    return 'go env GOPATH GOROOT'
+endfunction
+
+function! ale_linters#go#gobuild#GetCommand(buffer, goenv_output) abort
+    if !exists('s:go_env')
+        let s:go_env = {
+        \   'GOPATH': a:goenv_output[0],
+        \   'GOROOT': a:goenv_output[1],
+        \}
+    endif
+
+    " Run go test in local directory with relative path
+    return 'GOPATH=' . s:go_env.GOPATH
+    \   . ' cd ' . fnamemodify(bufname(a:buffer), ':.:h')
+    \   . ' && go test -c -o /dev/null ./'
+endfunction
+
+function! ale_linters#go#gobuild#GetMatches(lines) abort
+    " Matches patterns like the following:
+    "
+    " file.go:27: missing argument for Printf("%s"): format reads arg 2, have only 1 args
+    " file.go:53:10: if block ends with a return statement, so drop this else and outdent its block (move short variable declaration to its own line if necessary)
+    " file.go:5:2: expected declaration, found 'STRING' "log"
+
+    " go test returns relative paths so use tail of filename as part of pattern matcher
+    let l:pattern = '\v^([a-zA-Z]?:?[^:]+):(\d+):?(\d+)?:? (.+)$'
+
+    return ale#util#GetMatches(a:lines, l:pattern)
+endfunction
+
+function! ale_linters#go#gobuild#Handler(buffer, lines) abort
+    let l:output = []
+
+    for l:match in ale_linters#go#gobuild#GetMatches(a:lines)
+        " Omit errors from imported go packages
+        if !ale#path#IsBufferPath(a:buffer, l:match[1])
+            continue
+        endif
+
+        call add(l:output, {
+        \   'lnum': l:match[2] + 0,
+        \   'col': l:match[3] + 0,
+        \   'text': l:match[4],
+        \   'type': 'E',
+        \})
+    endfor
+
+    return l:output
+endfunction
+
+call ale#linter#Define('go', {
+\   'name': 'go build',
+\   'executable': 'go',
+\   'command_chain': [
+\     {'callback': 'ale_linters#go#gobuild#GoEnv', 'output_stream': 'stdout'},
+\     {'callback': 'ale_linters#go#gobuild#GetCommand', 'output_stream': 'stderr'},
+\   ],
+\   'callback': 'ale_linters#go#gobuild#Handler',
+\   'lint_file': 1,
+\})
--- a/ale_linters/go/gofmt.vim
+++ b/ale_linters/go/gofmt.vim
@ -0,0 +1,10 @@
+" Author: neersighted <bjorn@neersighted.com>
+" Description: gofmt for Go files
+
+call ale#linter#Define('go', {
+\   'name': 'gofmt',
+\   'output_stream': 'stderr',
+\   'executable': 'gofmt',
+\   'command': 'gofmt -e %t',
+\   'callback': 'ale#handlers#unix#HandleAsError',
+\})
--- a/ale_linters/go/golint.vim
+++ b/ale_linters/go/golint.vim
@ -0,0 +1,9 @@
+" Author: neersighted <bjorn@neersighted.com>
+" Description: golint for Go files
+
+call ale#linter#Define('go', {
+\   'name': 'golint',
+\   'executable': 'golint',
+\   'command': 'golint %t',
+\   'callback': 'ale#handlers#unix#HandleAsWarning',
+\})
--- a/ale_linters/go/gometalinter.vim
+++ b/ale_linters/go/gometalinter.vim
@ -0,0 +1,49 @@
+" Author: Ben Reedy <https://github.com/breed808>
+" Description: Adds support for the gometalinter suite for Go files
+
+call ale#Set('go_gometalinter_options', '')
+call ale#Set('go_gometalinter_executable', 'gometalinter')
+
+function! ale_linters#go#gometalinter#GetExecutable(buffer) abort
+    return ale#Var(a:buffer, 'go_gometalinter_executable')
+endfunction
+
+function! ale_linters#go#gometalinter#GetCommand(buffer) abort
+    let l:executable = ale_linters#go#gometalinter#GetExecutable(a:buffer)
+    let l:filename = expand('#' . a:buffer)
+    let l:options = ale#Var(a:buffer, 'go_gometalinter_options')
+
+    return ale#Escape(l:executable)
+    \   . ' --include=' . ale#Escape('^' . ale#util#EscapePCRE(l:filename))
+    \   . (!empty(l:options) ? ' ' . l:options : '')
+    \   . ' ' . ale#Escape(fnamemodify(l:filename, ':h'))
+endfunction
+
+function! ale_linters#go#gometalinter#GetMatches(lines) abort
+    let l:pattern = '\v^([a-zA-Z]?:?[^:]+):(\d+):?(\d+)?:?:?(warning|error):?\s\*?(.+)$'
+
+    return ale#util#GetMatches(a:lines, l:pattern)
+endfunction
+
+function! ale_linters#go#gometalinter#Handler(buffer, lines) abort
+    let l:output = []
+
+    for l:match in ale_linters#go#gometalinter#GetMatches(a:lines)
+        call add(l:output, {
+        \   'lnum': l:match[2] + 0,
+        \   'col': l:match[3] + 0,
+        \   'type': tolower(l:match[4]) is# 'warning' ? 'W' : 'E',
+        \   'text': l:match[5],
+        \})
+    endfor
+
+    return l:output
+endfunction
+
+call ale#linter#Define('go', {
+\   'name': 'gometalinter',
+\   'executable_callback': 'ale_linters#go#gometalinter#GetExecutable',
+\   'command_callback': 'ale_linters#go#gometalinter#GetCommand',
+\   'callback': 'ale_linters#go#gometalinter#Handler',
+\   'lint_file': 1,
+\})
--- a/ale_linters/go/gosimple.vim
+++ b/ale_linters/go/gosimple.vim
@ -0,0 +1,9 @@
+" Author: Ben Reedy <https://github.com/breed808>
+" Description: gosimple for Go files
+
+call ale#linter#Define('go', {
+\   'name': 'gosimple',
+\   'executable': 'gosimple',
+\   'command': 'gosimple %t',
+\   'callback': 'ale#handlers#unix#HandleAsWarning',
+\})
--- a/ale_linters/go/govet.vim
+++ b/ale_linters/go/govet.vim
@ -0,0 +1,10 @@
+" Author: neersighted <bjorn@neersighted.com>
+" Description: go vet for Go files
+
+call ale#linter#Define('go', {
+\   'name': 'go vet',
+\   'output_stream': 'stderr',
+\   'executable': 'go',
+\   'command': 'go vet %t',
+\   'callback': 'ale#handlers#unix#HandleAsError',
+\})
--- a/ale_linters/go/staticcheck.vim
+++ b/ale_linters/go/staticcheck.vim
@ -0,0 +1,9 @@
+" Author: Ben Reedy <https://github.com/breed808>
+" Description: staticcheck for Go files
+
+call ale#linter#Define('go', {
+\   'name': 'staticcheck',
+\   'executable': 'staticcheck',
+\   'command': 'staticcheck %t',
+\   'callback': 'ale#handlers#unix#HandleAsWarning',
+\})
--- a/ale_linters/graphql/gqlint.vim
+++ b/ale_linters/graphql/gqlint.vim
@ -0,0 +1,9 @@
+" Author: Michiel Westerbeek <happylinks@gmail.com>
+" Description: Linter for GraphQL Schemas
+
+call ale#linter#Define('graphql', {
+\   'name': 'gqlint',
+\   'executable': 'gqlint',
+\   'command': 'gqlint --reporter=simple %t',
+\   'callback': 'ale#handlers#unix#HandleAsWarning',
+\})
--- a/ale_linters/haml/hamllint.vim
+++ b/ale_linters/haml/hamllint.vim
@ -0,0 +1,26 @@
+" Author: Patrick Lewis - https://github.com/patricklewis
+" Description: haml-lint for Haml files
+
+function! ale_linters#haml#hamllint#Handle(buffer, lines) abort
+    " Matches patterns like the following:
+    " <path>:51 [W] RuboCop: Use the new Ruby 1.9 hash syntax.
+    let l:pattern = '\v^.*:(\d+) \[([EW])\] (.+)$'
+    let l:output = []
+
+    for l:match in ale#util#GetMatches(a:lines, l:pattern)
+        call add(l:output, {
+        \   'lnum': l:match[1] + 0,
+        \   'type': l:match[2],
+        \   'text': l:match[3]
+        \})
+    endfor
+
+    return l:output
+endfunction
+
+call ale#linter#Define('haml', {
+\   'name': 'hamllint',
+\   'executable': 'haml-lint',
+\   'command': 'haml-lint %t',
+\   'callback': 'ale_linters#haml#hamllint#Handle'
+\})
--- a/ale_linters/handlebars/embertemplatelint.vim
+++ b/ale_linters/handlebars/embertemplatelint.vim
@ -0,0 +1,50 @@
+" Author: Adrian Zalewski <aazalewski@hotmail.com>
+" Description: Ember-template-lint for checking Handlebars files
+
+call ale#Set('handlebars_embertemplatelint_executable', 'ember-template-lint')
+call ale#Set('handlebars_embertemplatelint_use_global', 0)
+
+function! ale_linters#handlebars#embertemplatelint#GetExecutable(buffer) abort
+    return ale#node#FindExecutable(a:buffer, 'handlebars_embertemplatelint', [
+    \   'node_modules/.bin/ember-template-lint',
+    \])
+endfunction
+
+function! ale_linters#handlebars#embertemplatelint#GetCommand(buffer) abort
+    return ale_linters#handlebars#embertemplatelint#GetExecutable(a:buffer)
+    \   . ' --json %t'
+endfunction
+
+function! ale_linters#handlebars#embertemplatelint#Handle(buffer, lines) abort
+    let l:output = []
+    let l:json = ale#util#FuzzyJSONDecode(a:lines, {})
+
+    for l:error in get(values(l:json), 0, [])
+        if has_key(l:error, 'fatal')
+            call add(l:output, {
+            \   'bufnr': a:buffer,
+            \   'lnum': 1,
+            \   'col': 1,
+            \   'text': l:error.message,
+            \   'type': l:error.severity == 1 ? 'W' : 'E',
+            \})
+        else
+            call add(l:output, {
+            \   'bufnr': a:buffer,
+            \   'lnum': l:error.line,
+            \   'col': l:error.column,
+            \   'text': l:error.rule . ': ' . l:error.message,
+            \   'type': l:error.severity == 1 ? 'W' : 'E',
+            \})
+        endif
+    endfor
+
+    return l:output
+endfunction
+
+call ale#linter#Define('handlebars', {
+\   'name': 'ember-template-lint',
+\   'executable_callback': 'ale_linters#handlebars#embertemplatelint#GetExecutable',
+\   'command_callback': 'ale_linters#handlebars#embertemplatelint#GetCommand',
+\   'callback': 'ale_linters#handlebars#embertemplatelint#Handle',
+\})
--- a/ale_linters/haskell/ghc-mod.vim
+++ b/ale_linters/haskell/ghc-mod.vim
@ -0,0 +1,16 @@
+" Author: wizzup <wizzup@gmail.com>
+" Description: ghc-mod for Haskell files
+
+call ale#linter#Define('haskell', {
+\   'name': 'ghc-mod',
+\   'executable': 'ghc-mod',
+\   'command': 'ghc-mod --map-file %s=%t check %s',
+\   'callback': 'ale#handlers#haskell#HandleGHCFormat',
+\})
+
+call ale#linter#Define('haskell', {
+\   'name': 'stack-ghc-mod',
+\   'executable': 'stack',
+\   'command': 'stack exec ghc-mod -- --map-file %s=%t check %s',
+\   'callback': 'ale#handlers#haskell#HandleGHCFormat',
+\})
--- a/ale_linters/haskell/ghc.vim
+++ b/ale_linters/haskell/ghc.vim
@ -0,0 +1,10 @@
+" Author: w0rp <devw0rp@gmail.com>
+" Description: ghc for Haskell files
+
+call ale#linter#Define('haskell', {
+\   'name': 'ghc',
+\   'output_stream': 'stderr',
+\   'executable': 'ghc',
+\   'command': 'ghc -fno-code -v0 %t',
+\   'callback': 'ale#handlers#haskell#HandleGHCFormat',
+\})
--- a/ale_linters/haskell/hdevtools.vim
+++ b/ale_linters/haskell/hdevtools.vim
@ -0,0 +1,22 @@
+" Author: rob-b, Takano Akio <tak@anoak.io>
+" Description: hdevtools for Haskell files
+
+call ale#Set('haskell_hdevtools_executable', 'hdevtools')
+call ale#Set('haskell_hdevtools_options', '-g -Wall')
+
+function! ale_linters#haskell#hdevtools#GetExecutable(buffer) abort
+    return ale#Var(a:buffer, 'haskell_hdevtools_executable')
+endfunction
+
+function! ale_linters#haskell#hdevtools#GetCommand(buffer) abort
+    return ale#Escape(ale_linters#haskell#hdevtools#GetExecutable(a:buffer))
+        \ . ' check ' . ale#Var(a:buffer, 'haskell_hdevtools_options')
+        \ . ' -p %s %t'
+endfunction
+
+call ale#linter#Define('haskell', {
+\   'name': 'hdevtools',
+\   'executable_callback': 'ale_linters#haskell#hdevtools#GetExecutable',
+\   'command_callback': 'ale_linters#haskell#hdevtools#GetCommand',
+\   'callback': 'ale#handlers#haskell#HandleGHCFormat',
+\})
--- a/ale_linters/haskell/hlint.vim
+++ b/ale_linters/haskell/hlint.vim
@ -0,0 +1,34 @@
+" Author: jparoz <jesse.paroz@gmail.com>
+" Description: hlint for Haskell files
+
+function! ale_linters#haskell#hlint#Handle(buffer, lines) abort
+    let l:output = []
+
+    for l:error in ale#util#FuzzyJSONDecode(a:lines, [])
+        if l:error.severity is# 'Error'
+            let l:type = 'E'
+        elseif l:error.severity is# 'Suggestion'
+            let l:type = 'I'
+        else
+            let l:type = 'W'
+        endif
+
+        call add(l:output, {
+        \   'lnum': str2nr(l:error.startLine),
+        \   'col': str2nr(l:error.startColumn),
+        \   'end_lnum': str2nr(l:error.endLine),
+        \   'end_col': str2nr(l:error.endColumn),
+        \   'text': l:error.severity . ': ' . l:error.hint . '. Found: ' . l:error.from . ' Why not: ' . l:error.to,
+        \   'type': l:type,
+        \})
+    endfor
+
+    return l:output
+endfunction
+
+call ale#linter#Define('haskell', {
+\   'name': 'hlint',
+\   'executable': 'hlint',
+\   'command': 'hlint --color=never --json -',
+\   'callback': 'ale_linters#haskell#hlint#Handle',
+\})
--- a/ale_linters/haskell/stack_build.vim
+++ b/ale_linters/haskell/stack_build.vim
@ -0,0 +1,22 @@
+" Author: Jake Zimmerman <jake@zimmerman.io>
+" Description: Like stack-ghc, but for entire projects
+"
+" Note: Ideally, this would *only* typecheck. Right now, it also does codegen.
+" See <https://github.com/commercialhaskell/stack/issues/977>.
+
+call ale#Set('haskell_stack_build_options', '--fast')
+
+function ale_linters#haskell#stack_build#GetCommand(buffer) abort
+    let l:flags = ale#Var(a:buffer, 'haskell_stack_build_options')
+
+    return 'stack build ' . l:flags
+endfunction
+
+call ale#linter#Define('haskell', {
+\   'name': 'stack-build',
+\   'output_stream': 'stderr',
+\   'executable': 'stack',
+\   'command_callback': 'ale_linters#haskell#stack_build#GetCommand',
+\   'lint_file': 1,
+\   'callback': 'ale#handlers#haskell#HandleGHCFormat',
+\})
--- a/ale_linters/haskell/stack_ghc.vim
+++ b/ale_linters/haskell/stack_ghc.vim
@ -0,0 +1,10 @@
+" Author: w0rp <devw0rp@gmail.com>
+" Description: ghc for Haskell files, using Stack
+
+call ale#linter#Define('haskell', {
+\   'name': 'stack-ghc',
+\   'output_stream': 'stderr',
+\   'executable': 'stack',
+\   'command': 'stack ghc -- -fno-code -v0 %t',
+\   'callback': 'ale#handlers#haskell#HandleGHCFormat',
+\})
--- a/ale_linters/help/proselint.vim
+++ b/ale_linters/help/proselint.vim
@ -0,0 +1,9 @@
+" Author: Daniel M. Capella https://github.com/polyzen
+" Description: proselint for Vim help files
+
+call ale#linter#Define('help', {
+\   'name': 'proselint',
+\   'executable': 'proselint',
+\   'command': 'proselint %t',
+\   'callback': 'ale#handlers#unix#HandleAsWarning',
+\})
--- a/ale_linters/html/htmlhint.vim
+++ b/ale_linters/html/htmlhint.vim
@ -0,0 +1,25 @@
+" Author: KabbAmine <amine.kabb@gmail.com>, deathmaz <00maz1987@gmail.com>, diartyz <diartyz@gmail.com>
+" Description: HTMLHint for checking html files
+
+call ale#Set('html_htmlhint_options', '--format=unix')
+call ale#Set('html_htmlhint_executable', 'htmlhint')
+call ale#Set('html_htmlhint_use_global', 0)
+
+function! ale_linters#html#htmlhint#GetExecutable(buffer) abort
+    return ale#node#FindExecutable(a:buffer, 'html_htmlhint', [
+    \   'node_modules/.bin/htmlhint',
+    \])
+endfunction
+
+function! ale_linters#html#htmlhint#GetCommand(buffer) abort
+    return ale_linters#html#htmlhint#GetExecutable(a:buffer)
+    \   . ' ' . ale#Var(a:buffer, 'html_htmlhint_options')
+    \   . ' %t'
+endfunction
+
+call ale#linter#Define('html', {
+\   'name': 'htmlhint',
+\   'executable_callback': 'ale_linters#html#htmlhint#GetExecutable',
+\   'command_callback': 'ale_linters#html#htmlhint#GetCommand',
+\   'callback': 'ale#handlers#unix#HandleAsError',
+\})
--- a/ale_linters/html/proselint.vim
+++ b/ale_linters/html/proselint.vim
@ -0,0 +1,9 @@
+" Author: Daniel M. Capella https://github.com/polyzen
+" Description: proselint for HTML files
+
+call ale#linter#Define('html', {
+\   'name': 'proselint',
+\   'executable': 'proselint',
+\   'command': 'proselint %t',
+\   'callback': 'ale#handlers#unix#HandleAsWarning',
+\})
--- a/ale_linters/html/tidy.vim
+++ b/ale_linters/html/tidy.vim
@ -0,0 +1,69 @@
+" Author: KabbAmine <amine.kabb@gmail.com>
+" Description: This file adds support for checking HTML code with tidy.
+
+" CLI options
+let g:ale_html_tidy_executable = get(g:, 'ale_html_tidy_executable', 'tidy')
+" Look for the old _args variable first.
+let s:default_options = get(g:, 'ale_html_tidy_args', '-q -e -language en')
+let g:ale_html_tidy_options = get(g:, 'ale_html_tidy_options', s:default_options)
+
+function! ale_linters#html#tidy#GetCommand(buffer) abort
+    " Specify file encoding in options
+    " (Idea taken from https://github.com/scrooloose/syntastic/blob/master/syntax_checkers/html/tidy.vim)
+    let l:file_encoding = get({
+    \   'ascii':        '-ascii',
+    \   'big5':         '-big5',
+    \   'cp1252':       '-win1252',
+    \   'cp850':        '-ibm858',
+    \   'cp932':        '-shiftjis',
+    \   'iso-2022-jp':  '-iso-2022',
+    \   'latin1':       '-latin1',
+    \   'macroman':     '-mac',
+    \   'sjis':         '-shiftjis',
+    \   'utf-16le':     '-utf16le',
+    \   'utf-16':       '-utf16',
+    \   'utf-8':        '-utf8',
+    \ }, &fileencoding, '-utf8')
+
+    return printf('%s %s %s -',
+    \   ale#Var(a:buffer, 'html_tidy_executable'),
+    \   ale#Var(a:buffer, 'html_tidy_options'),
+    \   l:file_encoding
+    \)
+endfunction
+
+function! ale_linters#html#tidy#GetExecutable(buffer) abort
+    return ale#Var(a:buffer, 'html_tidy_executable')
+endfunction
+
+function! ale_linters#html#tidy#Handle(buffer, lines) abort
+    " Matches patterns lines like the following:
+    " line 7 column 5 - Warning: missing </title> before </head>
+
+    let l:pattern = '^line \(\d\+\) column \(\d\+\) - \(Warning\|Error\): \(.\+\)$'
+    let l:output = []
+
+    for l:match in ale#util#GetMatches(a:lines, l:pattern)
+        let l:line = l:match[1] + 0
+        let l:col = l:match[2] + 0
+        let l:type = l:match[3] is# 'Error' ? 'E' : 'W'
+        let l:text = l:match[4]
+
+        call add(l:output, {
+        \   'lnum': l:line,
+        \   'col': l:col,
+        \   'text': l:text,
+        \   'type': l:type,
+        \})
+    endfor
+
+    return l:output
+endfunction
+
+call ale#linter#Define('html', {
+\   'name': 'tidy',
+\   'executable_callback': 'ale_linters#html#tidy#GetExecutable',
+\   'output_stream': 'stderr',
+\   'command_callback': 'ale_linters#html#tidy#GetCommand',
+\   'callback': 'ale_linters#html#tidy#Handle',
+\ })
--- a/ale_linters/idris/idris.vim
+++ b/ale_linters/idris/idris.vim
@ -0,0 +1,87 @@
+" Author: Scott Bonds <scott@ggr.com>
+" Description: default Idris compiler
+
+call ale#Set('idris_idris_executable', 'idris')
+call ale#Set('idris_idris_options', '--total --warnpartial --warnreach --warnipkg')
+
+function! ale_linters#idris#idris#GetExecutable(buffer) abort
+    return ale#Var(a:buffer, 'idris_idris_executable')
+endfunction
+
+function! ale_linters#idris#idris#GetCommand(buffer) abort
+    let l:options = ale#Var(a:buffer, 'idris_idris_options')
+
+    return ale#Escape(ale_linters#idris#idris#GetExecutable(a:buffer))
+    \   . (!empty(l:options) ? ' ' . l:options : '')
+    \   . ' --check %s'
+endfunction
+
+function! ale_linters#idris#idris#Handle(buffer, lines) abort
+    " This was copied almost verbatim from ale#handlers#haskell#HandleGHCFormat
+
+    " Look for lines like the following:
+    " foo.idr:2:6:When checking right hand side of main with expected type
+    " bar.idr:11:11-13:
+    let l:pattern = '\v^([a-zA-Z]?:?[^:]+):(\d+):(\d+)(-\d+)?:(.*)?$'
+    let l:output = []
+
+    let l:corrected_lines = []
+
+    for l:line in a:lines
+        if len(matchlist(l:line, l:pattern)) > 0
+            call add(l:corrected_lines, l:line)
+        elseif len(l:corrected_lines) > 0
+            if l:line is# ''
+                let l:corrected_lines[-1] .= ' ' " turn a blank line into a space
+            else
+                let l:corrected_lines[-1] .= l:line
+            endif
+            let l:corrected_lines[-1] = substitute(l:corrected_lines[-1], '\s\+', ' ', 'g')
+        endif
+    endfor
+
+    for l:line in l:corrected_lines
+        let l:match = matchlist(l:line, l:pattern)
+
+        if len(l:match) == 0
+            continue
+        endif
+
+        if !ale#path#IsBufferPath(a:buffer, l:match[1])
+            continue
+        endif
+
+        let l:errors = matchlist(l:match[5], '\v([wW]arning|[eE]rror) - ?(.*)')
+
+        if len(l:errors) > 0
+          let l:ghc_type = l:errors[1]
+          let l:text = l:errors[2]
+        else
+          let l:ghc_type = ''
+          let l:text = l:match[5][:0] is# ' ' ? l:match[5][1:] : l:match[5]
+        endif
+
+        if l:ghc_type is? 'Warning'
+            let l:type = 'W'
+        else
+            let l:type = 'E'
+        endif
+
+        call add(l:output, {
+        \   'lnum': l:match[2] + 0,
+        \   'col': l:match[3] + 0,
+        \   'text': l:text,
+        \   'type': l:type,
+        \})
+    endfor
+
+    return l:output
+endfunction
+
+call ale#linter#Define('idris', {
+\   'name': 'idris',
+\   'executable_callback': 'ale_linters#idris#idris#GetExecutable',
+\   'command_callback': 'ale_linters#idris#idris#GetCommand',
+\   'callback': 'ale_linters#idris#idris#Handle',
+\})
+
--- a/ale_linters/java/checkstyle.vim
+++ b/ale_linters/java/checkstyle.vim
@ -0,0 +1,46 @@
+" Author: Devon Meunier <devon.meunier@gmail.com>
+" Description: checkstyle for Java files
+
+function! ale_linters#java#checkstyle#Handle(buffer, lines) abort
+    let l:patterns = [
+        \ '\v\[(WARN|ERROR)\] .*:(\d+):(\d+): (.*)',
+        \ '\v\[(WARN|ERROR)\] .*:(\d+): (.*)',
+        \]
+    let l:output = []
+
+    for l:match in ale#util#GetMatches(a:lines, l:patterns)
+        let l:args = {
+        \   'lnum': l:match[2] + 0,
+        \   'type': l:match[1] =~? 'WARN' ? 'W' : 'E'
+        \ }
+
+        let l:col = l:match[3] + 0
+        if l:col > 0
+            let l:args['col'] = l:col
+            let l:args['text'] = l:match[4]
+        else
+            let l:args['text'] = l:match[3]
+        endif
+
+        call add(l:output, l:args)
+    endfor
+
+    return l:output
+endfunction
+
+function! ale_linters#java#checkstyle#GetCommand(buffer) abort
+    return 'checkstyle '
+    \ . ale#Var(a:buffer, 'java_checkstyle_options')
+    \ . ' %t'
+endfunction
+
+if !exists('g:ale_java_checkstyle_options')
+    let g:ale_java_checkstyle_options = '-c /google_checks.xml'
+endif
+
+call ale#linter#Define('java', {
+\   'name': 'checkstyle',
+\   'executable': 'checkstyle',
+\   'command_callback': 'ale_linters#java#checkstyle#GetCommand',
+\   'callback': 'ale_linters#java#checkstyle#Handle',
+\})
--- a/ale_linters/java/javac.vim
+++ b/ale_linters/java/javac.vim
@ -0,0 +1,94 @@
+" Author: farenjihn <farenjihn@gmail.com>, w0rp <devw0rp@gmail.com>
+" Description: Lints java files using javac
+
+let s:classpath_sep = has('unix') ? ':' : ';'
+
+let g:ale_java_javac_options = get(g:, 'ale_java_javac_options', '')
+let g:ale_java_javac_classpath = get(g:, 'ale_java_javac_classpath', '')
+
+function! ale_linters#java#javac#GetImportPaths(buffer) abort
+    let l:pom_path = ale#path#FindNearestFile(a:buffer, 'pom.xml')
+
+    if !empty(l:pom_path) && executable('mvn')
+        return ale#path#CdString(fnamemodify(l:pom_path, ':h'))
+        \ . 'mvn dependency:build-classpath'
+    endif
+
+    return ''
+endfunction
+
+function! s:BuildClassPathOption(buffer, import_paths) abort
+    " Filter out lines like [INFO], etc.
+    let l:class_paths = filter(a:import_paths[:], 'v:val !~# ''[''')
+    call extend(
+    \   l:class_paths,
+    \   split(ale#Var(a:buffer, 'java_javac_classpath'), s:classpath_sep),
+    \)
+
+    return !empty(l:class_paths)
+    \   ? '-cp ' . ale#Escape(join(l:class_paths, s:classpath_sep))
+    \   : ''
+endfunction
+
+function! ale_linters#java#javac#GetCommand(buffer, import_paths) abort
+    let l:cp_option = s:BuildClassPathOption(a:buffer, a:import_paths)
+    let l:sp_option = ''
+
+    " Find the src directory, for files in this project.
+    let l:src_dir = ale#path#FindNearestDirectory(a:buffer, 'src/main/java')
+
+    if !empty(l:src_dir)
+        let l:sp_option = '-sourcepath ' . ale#Escape(l:src_dir)
+    endif
+
+    " Create .class files in a temporary directory, which we will delete later.
+    let l:class_file_directory = ale#engine#CreateDirectory(a:buffer)
+
+    return 'javac -Xlint'
+    \ . ' ' . l:cp_option
+    \ . ' ' . l:sp_option
+    \ . ' -d ' . ale#Escape(l:class_file_directory)
+    \ . ' ' . ale#Var(a:buffer, 'java_javac_options')
+    \ . ' %t'
+endfunction
+
+function! ale_linters#java#javac#Handle(buffer, lines) abort
+    " Look for lines like the following.
+    "
+    " Main.java:13: warning: [deprecation] donaught() in Testclass has been deprecated
+    " Main.java:16: error: ';' expected
+
+    let l:pattern = '\v^.*:(\d+): (.+):(.+)$'
+    let l:col_pattern = '\v^(\s*\^)$'
+    let l:symbol_pattern = '\v^ +symbol: *(class|method) +([^ ]+)'
+    let l:output = []
+
+    for l:match in ale#util#GetMatches(a:lines, [l:pattern, l:col_pattern, l:symbol_pattern])
+        if empty(l:match[2]) && empty(l:match[3])
+                let l:output[-1].col = len(l:match[1])
+        elseif empty(l:match[3])
+            " Add symbols to 'cannot find symbol' errors.
+            if l:output[-1].text is# 'error: cannot find symbol'
+                let l:output[-1].text .= ': ' . l:match[2]
+            endif
+        else
+            call add(l:output, {
+            \   'lnum': l:match[1] + 0,
+            \   'text': l:match[2] . ':' . l:match[3],
+            \   'type': l:match[2] is# 'error' ? 'E' : 'W',
+            \})
+        endif
+    endfor
+
+    return l:output
+endfunction
+
+call ale#linter#Define('java', {
+\   'name': 'javac',
+\   'executable': 'javac',
+\   'command_chain': [
+\       {'callback': 'ale_linters#java#javac#GetImportPaths', 'output_stream': 'stdout'},
+\       {'callback': 'ale_linters#java#javac#GetCommand', 'output_stream': 'stderr'},
+\   ],
+\   'callback': 'ale_linters#java#javac#Handle',
+\})
--- a/ale_linters/javascript/eslint.vim
+++ b/ale_linters/javascript/eslint.vim
@ -0,0 +1,9 @@
+" Author: w0rp <devw0rp@gmail.com>
+" Description: eslint for JavaScript files
+
+call ale#linter#Define('javascript', {
+\   'name': 'eslint',
+\   'executable_callback': 'ale#handlers#eslint#GetExecutable',
+\   'command_callback': 'ale#handlers#eslint#GetCommand',
+\   'callback': 'ale#handlers#eslint#Handle',
+\})
--- a/ale_linters/javascript/flow.vim
+++ b/ale_linters/javascript/flow.vim
@ -0,0 +1,117 @@
+" Author: Zach Perrault -- @zperrault
+" Description: FlowType checking for JavaScript files
+
+call ale#Set('javascript_flow_executable', 'flow')
+call ale#Set('javascript_flow_use_global', 0)
+
+function! ale_linters#javascript#flow#GetExecutable(buffer) abort
+    return ale#node#FindExecutable(a:buffer, 'javascript_flow', [
+    \   'node_modules/.bin/flow',
+    \])
+endfunction
+
+function! ale_linters#javascript#flow#VersionCheck(buffer) abort
+    return ale#Escape(ale_linters#javascript#flow#GetExecutable(a:buffer))
+    \   . ' --version'
+endfunction
+
+function! ale_linters#javascript#flow#GetCommand(buffer, version_lines) abort
+    let l:flow_config = ale#path#FindNearestFile(a:buffer, '.flowconfig')
+
+    if empty(l:flow_config)
+        " Don't run Flow if we can't find a .flowconfig file.
+        return ''
+    endif
+
+    let l:use_respect_pragma = 1
+
+    " If we can parse the version number, then only use --respect-pragma
+    " if the version is >= 0.36.0, which added the argument.
+    for l:match in ale#util#GetMatches(a:version_lines, '\v\d+\.\d+\.\d+$')
+        let l:use_respect_pragma = ale#semver#GreaterOrEqual(
+        \   ale#semver#Parse(l:match[0]),
+        \   [0, 36, 0]
+        \)
+    endfor
+
+    return ale#Escape(ale_linters#javascript#flow#GetExecutable(a:buffer))
+    \   . ' check-contents'
+    \   . (l:use_respect_pragma ? ' --respect-pragma': '')
+    \   . ' --json --from ale %s'
+endfunction
+
+" Filter lines of flow output until we find the first line where the JSON
+" output starts.
+function! s:GetJSONLines(lines) abort
+    let l:start_index = 0
+
+    for l:line in a:lines
+        if l:line[:0] is# '{'
+            break
+        endif
+
+        let l:start_index += 1
+    endfor
+
+    return a:lines[l:start_index :]
+endfunction
+
+function! ale_linters#javascript#flow#Handle(buffer, lines) abort
+    let l:str = join(s:GetJSONLines(a:lines), '')
+
+    if empty(l:str)
+        return []
+    endif
+
+    let l:flow_output = json_decode(l:str)
+    let l:output = []
+
+    for l:error in get(l:flow_output, 'errors', [])
+        " Each error is broken up into parts
+        let l:text = ''
+        let l:line = 0
+        let l:col = 0
+
+        for l:message in l:error.message
+            " Comments have no line of column information, so we skip them.
+            " In certain cases, `l:message.loc.source` points to a different path
+            " than the buffer one, thus we skip this loc information too.
+            if has_key(l:message, 'loc')
+            \&& l:line is# 0
+            \&& ale#path#IsBufferPath(a:buffer, l:message.loc.source)
+                let l:line = l:message.loc.start.line + 0
+                let l:col = l:message.loc.start.column + 0
+            endif
+
+            if l:text is# ''
+                let l:text = l:message.descr . ':'
+            else
+                let l:text = l:text . ' ' . l:message.descr
+            endif
+        endfor
+
+        if has_key(l:error, 'operation')
+            let l:text = l:text . ' See also: ' . l:error.operation.descr
+        endif
+
+        call add(l:output, {
+        \   'lnum': l:line,
+        \   'col': l:col,
+        \   'text': l:text,
+        \   'type': l:error.level is# 'error' ? 'E' : 'W',
+        \})
+    endfor
+
+    return l:output
+endfunction
+
+call ale#linter#Define('javascript', {
+\   'name': 'flow',
+\   'executable_callback': 'ale_linters#javascript#flow#GetExecutable',
+\   'command_chain': [
+\       {'callback': 'ale_linters#javascript#flow#VersionCheck'},
+\       {'callback': 'ale_linters#javascript#flow#GetCommand'},
+\   ],
+\   'callback': 'ale_linters#javascript#flow#Handle',
+\   'add_newline': !has('win32'),
+\})
--- a/ale_linters/javascript/jscs.vim
+++ b/ale_linters/javascript/jscs.vim
@ -0,0 +1,63 @@
+" Author: Chris Kyrouac - https://github.com/fijshion
+" Description: jscs for JavaScript files
+
+call ale#Set('javascript_jscs_executable', 'jscs')
+call ale#Set('javascript_jscs_use_global', 0)
+
+function! ale_linters#javascript#jscs#GetExecutable(buffer) abort
+    return ale#node#FindExecutable(a:buffer, 'javascript_jscs', [
+    \   'node_modules/.bin/jscs',
+    \])
+endfunction
+
+function! ale_linters#javascript#jscs#GetCommand(buffer) abort
+    " Search for a local JShint config locaation, and default to a global one.
+    let l:jscs_config = ale#path#ResolveLocalPath(
+    \   a:buffer,
+    \   '.jscsrc',
+    \   get(g:, 'ale_jscs_config_loc', '')
+    \)
+
+    let l:command = ale#Escape(ale_linters#javascript#jscs#GetExecutable(a:buffer))
+    let l:command .= ' --reporter inline --no-colors'
+
+    if !empty(l:jscs_config)
+        let l:command .= ' --config ' . ale#Escape(l:jscs_config)
+    endif
+
+    let l:command .= ' -'
+
+    return l:command
+endfunction
+
+function! ale_linters#javascript#jscs#Handle(buffer, lines) abort
+    " Matches patterns looking like the following
+    "
+    " foobar.js: line 2, col 1, Expected indentation of 1 characters
+    "
+    let l:pattern = '^.*:\s\+line \(\d\+\),\s\+col\s\+\(\d\+\),\s\+\(.*\)$'
+    let l:output = []
+    let l:m = ale#util#GetMatches(a:lines, [l:pattern])
+
+    for l:match in l:m
+        let l:text = l:match[3]
+
+        let l:obj = {
+        \   'lnum': l:match[1] + 0,
+        \   'col': l:match[2] + 0,
+        \   'text': l:match[3]
+        \}
+
+        call add(l:output, l:obj)
+    endfor
+
+    return l:output
+endfunction
+
+call ale#linter#Define('javascript', {
+\   'name': 'jscs',
+\   'executable_callback': 'ale_linters#javascript#jscs#GetExecutable',
+\   'command_callback': 'ale_linters#javascript#jscs#GetCommand',
+\   'callback': 'ale_linters#javascript#jscs#Handle',
+\})
+
--- a/ale_linters/javascript/jshint.vim
+++ b/ale_linters/javascript/jshint.vim
@ -0,0 +1,38 @@
+" Author: Chris Kyrouac - https://github.com/fijshion
+" Description: JSHint for Javascript files
+
+call ale#Set('javascript_jshint_executable', 'jshint')
+call ale#Set('javascript_jshint_use_global', 0)
+
+function! ale_linters#javascript#jshint#GetExecutable(buffer) abort
+    return ale#node#FindExecutable(a:buffer, 'javascript_jshint', [
+    \   'node_modules/.bin/jshint',
+    \])
+endfunction
+
+function! ale_linters#javascript#jshint#GetCommand(buffer) abort
+    " Search for a local JShint config locaation, and default to a global one.
+    let l:jshint_config = ale#path#ResolveLocalPath(
+    \   a:buffer,
+    \   '.jshintrc',
+    \   get(g:, 'ale_jshint_config_loc', '')
+    \)
+
+    let l:command = ale#Escape(ale_linters#javascript#jshint#GetExecutable(a:buffer))
+    let l:command .= ' --reporter unix --extract auto'
+
+    if !empty(l:jshint_config)
+        let l:command .= ' --config ' . ale#Escape(l:jshint_config)
+    endif
+
+    let l:command .= ' -'
+
+    return l:command
+endfunction
+
+call ale#linter#Define('javascript', {
+\   'name': 'jshint',
+\   'executable_callback': 'ale_linters#javascript#jshint#GetExecutable',
+\   'command_callback': 'ale_linters#javascript#jshint#GetCommand',
+\   'callback': 'ale#handlers#unix#HandleAsError',
+\})
--- a/ale_linters/javascript/standard.vim
+++ b/ale_linters/javascript/standard.vim
@ -0,0 +1,30 @@
+" Author: Ahmed El Gabri <@ahmedelgabri>
+" Description: standardjs for JavaScript files
+
+call ale#Set('javascript_standard_executable', 'standard')
+call ale#Set('javascript_standard_use_global', 0)
+call ale#Set('javascript_standard_options', '')
+
+function! ale_linters#javascript#standard#GetExecutable(buffer) abort
+    return ale#node#FindExecutable(a:buffer, 'javascript_standard', [
+    \   'node_modules/standard/bin/cmd.js',
+    \   'node_modules/.bin/standard',
+    \])
+endfunction
+
+function! ale_linters#javascript#standard#GetCommand(buffer) abort
+    let l:executable = ale_linters#javascript#standard#GetExecutable(a:buffer)
+    let l:options = ale#Var(a:buffer, 'javascript_standard_options')
+
+    return ale#node#Executable(a:buffer, l:executable)
+    \   . (!empty(l:options) ? ' ' . l:options : '')
+    \   . ' --stdin %s'
+endfunction
+
+" standard uses eslint and the output format is the same
+call ale#linter#Define('javascript', {
+\   'name': 'standard',
+\   'executable_callback': 'ale_linters#javascript#standard#GetExecutable',
+\   'command_callback': 'ale_linters#javascript#standard#GetCommand',
+\   'callback': 'ale#handlers#eslint#Handle',
+\})
--- a/ale_linters/javascript/xo.vim
+++ b/ale_linters/javascript/xo.vim
@ -0,0 +1,26 @@
+" Author: Daniel Lupu <lupu.daniel.f@gmail.com>
+" Description: xo for JavaScript files
+
+call ale#Set('javascript_xo_executable', 'xo')
+call ale#Set('javascript_xo_use_global', 0)
+call ale#Set('javascript_xo_options', '')
+
+function! ale_linters#javascript#xo#GetExecutable(buffer) abort
+    return ale#node#FindExecutable(a:buffer, 'javascript_xo', [
+    \   'node_modules/.bin/xo',
+    \])
+endfunction
+
+function! ale_linters#javascript#xo#GetCommand(buffer) abort
+    return ale#Escape(ale_linters#javascript#xo#GetExecutable(a:buffer))
+    \   . ' ' . ale#Var(a:buffer, 'javascript_xo_options')
+    \   . ' --reporter unix --stdin --stdin-filename %s'
+endfunction
+
+" xo uses eslint and the output format is the same
+call ale#linter#Define('javascript', {
+\   'name': 'xo',
+\   'executable_callback': 'ale_linters#javascript#xo#GetExecutable',
+\   'command_callback': 'ale_linters#javascript#xo#GetCommand',
+\   'callback': 'ale#handlers#eslint#Handle',
+\})
--- a/ale_linters/json/jsonlint.vim
+++ b/ale_linters/json/jsonlint.vim
@ -0,0 +1,27 @@
+" Author: KabbAmine <amine.kabb@gmail.com>
+
+function! ale_linters#json#jsonlint#Handle(buffer, lines) abort
+    " Matches patterns like the following:
+    " line 2, col 15, found: 'STRING' - expected: 'EOF', '}', ',', ']'.
+
+    let l:pattern = '^line \(\d\+\), col \(\d*\), \(.\+\)$'
+    let l:output = []
+
+    for l:match in ale#util#GetMatches(a:lines, l:pattern)
+        call add(l:output, {
+        \   'lnum': l:match[1] + 0,
+        \   'col': l:match[2] + 0,
+        \   'text': l:match[3],
+        \})
+    endfor
+
+    return l:output
+endfunction
+
+call ale#linter#Define('json', {
+\   'name': 'jsonlint',
+\   'executable': 'jsonlint',
+\   'output_stream': 'stderr',
+\   'command': 'jsonlint --compact -',
+\   'callback': 'ale_linters#json#jsonlint#Handle',
+\})
--- a/ale_linters/kotlin/kotlinc.vim
+++ b/ale_linters/kotlin/kotlinc.vim
@ -0,0 +1,170 @@
+" Author: Francis Agyapong <francisgyapong2@gmail.com>
+" Description: A linter for the Kotlin programming language that uses kotlinc
+
+let g:ale_kotlin_kotlinc_options = get(g:, 'ale_kotlin_kotlinc_options', '')
+let g:ale_kotlin_kotlinc_enable_config = get(g:, 'ale_kotlin_kotlinc_enable_config', 0)
+let g:ale_kotlin_kotlinc_config_file = get(g:, 'ale_kotlin_kotlinc_config_file', '.ale_kotlinc_config')
+let g:ale_kotlin_kotlinc_classpath = get(g:, 'ale_kotlin_kotlinc_classpath', '')
+let g:ale_kotlin_kotlinc_sourcepath = get(g:, 'ale_kotlin_kotlinc_sourcepath', '')
+let g:ale_kotlin_kotlinc_use_module_file = get(g:, 'ale_kotlin_kotlinc_use_module_file', 0)
+let g:ale_kotlin_kotlinc_module_filename = get(g:, 'ale_kotlin_kotlinc_module_filename', 'module.xml')
+
+let s:classpath_sep = has('unix') ? ':' : ';'
+
+function! ale_linters#kotlin#kotlinc#GetImportPaths(buffer) abort
+    " exec maven/gradle only if classpath is not set
+    if ale#Var(a:buffer, 'kotlin_kotlinc_classpath') isnot# ''
+        return ''
+    else
+        let l:pom_path = ale#path#FindNearestFile(a:buffer, 'pom.xml')
+        if !empty(l:pom_path) && executable('mvn')
+            return ale#path#CdString(fnamemodify(l:pom_path, ':h'))
+                        \ . 'mvn dependency:build-classpath'
+        endif
+
+        let l:classpath_command = ale#gradle#BuildClasspathCommand(a:buffer)
+        if !empty(l:classpath_command)
+            return l:classpath_command
+        endif
+
+        return ''
+    endif
+endfunction
+
+function! s:BuildClassPathOption(buffer, import_paths) abort
+    " Filter out lines like [INFO], etc.
+    let l:class_paths = filter(a:import_paths[:], 'v:val !~# ''[''')
+    call extend(
+    \   l:class_paths,
+    \   split(ale#Var(a:buffer, 'kotlin_kotlinc_classpath'), s:classpath_sep),
+    \)
+
+    return !empty(l:class_paths)
+    \   ? ' -cp ' . ale#Escape(join(l:class_paths, s:classpath_sep))
+    \   : ''
+endfunction
+
+function! ale_linters#kotlin#kotlinc#GetCommand(buffer, import_paths) abort
+    let l:kotlinc_opts = ale#Var(a:buffer, 'kotlin_kotlinc_options')
+    let l:command = 'kotlinc '
+
+    " If the config file is enabled and readable, source it
+    if ale#Var(a:buffer, 'kotlin_kotlinc_enable_config')
+        let l:conf = expand(ale#Var(a:buffer, 'kotlin_kotlinc_config_file'), 1)
+
+        if filereadable(l:conf)
+            execute 'source ' . fnameescape(l:conf)
+        endif
+    endif
+
+    " If use module and module file is readable use that and return
+    if ale#Var(a:buffer, 'kotlin_kotlinc_use_module_file')
+        let l:module_filename = ale#Escape(expand(ale#Var(a:buffer, 'kotlin_kotlinc_module_filename'), 1))
+
+        if filereadable(l:module_filename)
+            let l:kotlinc_opts .= ' -module ' . l:module_filename
+            let l:command .= 'kotlinc ' . l:kotlinc_opts
+
+            return l:command
+        endif
+    endif
+
+    " We only get here if not using module or the module file not readable
+    if ale#Var(a:buffer, 'kotlin_kotlinc_classpath') isnot# ''
+        let l:kotlinc_opts .= ' -cp ' . ale#Var(a:buffer, 'kotlin_kotlinc_classpath')
+    else
+        " get classpath from maven/gradle
+        let l:kotlinc_opts .= s:BuildClassPathOption(a:buffer, a:import_paths)
+    endif
+
+    let l:fname = ''
+    if ale#Var(a:buffer, 'kotlin_kotlinc_sourcepath') isnot# ''
+        let l:fname .= expand(ale#Var(a:buffer, 'kotlin_kotlinc_sourcepath'), 1) . ' '
+    else
+        " Find the src directory for files in this project.
+
+        let l:project_root = ale#gradle#FindProjectRoot(a:buffer)
+        if !empty(l:project_root)
+            let l:src_dir = l:project_root
+        else
+            let l:src_dir = ale#path#FindNearestDirectory(a:buffer, 'src/main/java')
+            \   . ' ' . ale#path#FindNearestDirectory(a:buffer, 'src/main/kotlin')
+        endif
+
+        let l:fname .= expand(l:src_dir, 1) . ' '
+    endif
+    let l:fname .= ale#Escape(expand('#' . a:buffer . ':p'))
+    let l:command .= l:kotlinc_opts . ' ' . l:fname
+
+    return l:command
+endfunction
+
+function! ale_linters#kotlin#kotlinc#Handle(buffer, lines) abort
+    let l:code_pattern = '^\(.*\):\([0-9]\+\):\([0-9]\+\):\s\+\(error\|warning\):\s\+\(.*\)'
+    let l:general_pattern = '^\(warning\|error\|info\):\s*\(.*\)'
+    let l:output = []
+
+    for l:line in a:lines
+        let l:match = matchlist(l:line, l:code_pattern)
+
+        if len(l:match) == 0
+            continue
+        endif
+
+        let l:file = l:match[1]
+        let l:line = l:match[2] + 0
+        let l:column = l:match[3] + 0
+        let l:type = l:match[4]
+        let l:text = l:match[5]
+
+        let l:buf_abspath = fnamemodify(l:file, ':p')
+        let l:curbuf_abspath = expand('#' . a:buffer . ':p')
+
+        " Skip if file is not loaded
+        if l:buf_abspath isnot# l:curbuf_abspath
+            continue
+        endif
+        let l:type_marker_str = l:type is# 'warning' ? 'W' : 'E'
+
+        call add(l:output, {
+        \   'lnum': l:line,
+        \   'col': l:column,
+        \   'text': l:text,
+        \   'type': l:type_marker_str,
+        \})
+    endfor
+
+    " Non-code related messages
+    for l:line in a:lines
+        let l:match = matchlist(l:line, l:general_pattern)
+
+        if len(l:match) == 0
+            continue
+        endif
+
+        let l:type = l:match[1]
+        let l:text = l:match[2]
+
+        let l:type_marker_str = l:type is# 'warning' || l:type is# 'info' ? 'W' : 'E'
+
+        call add(l:output, {
+        \   'lnum': 1,
+        \   'text': l:text,
+        \   'type': l:type_marker_str,
+        \})
+    endfor
+
+    return l:output
+endfunction
+
+call ale#linter#Define('kotlin', {
+\   'name': 'kotlinc',
+\   'executable': 'kotlinc',
+\   'command_chain': [
+\       {'callback': 'ale_linters#kotlin#kotlinc#GetImportPaths', 'output_stream': 'stdout'},
+\       {'callback': 'ale_linters#kotlin#kotlinc#GetCommand', 'output_stream': 'stderr'},
+\   ],
+\   'callback': 'ale_linters#kotlin#kotlinc#Handle',
+\   'lint_file': 1,
+\})
+
--- a/ale_linters/kotlin/ktlint.vim
+++ b/ale_linters/kotlin/ktlint.vim
@ -0,0 +1,54 @@
+" Author: Francis Agyapong <francisagyapong2@gmail.com>
+" Description: Lint kotlin files using ktlint
+
+call ale#Set('kotlin_ktlint_executable', 'ktlint')
+call ale#Set('kotlin_ktlint_rulesets', [])
+call ale#Set('kotlin_ktlint_format', 0)
+
+
+function! ale_linters#kotlin#ktlint#GetCommand(buffer) abort
+    let l:executable = ale#Var(a:buffer, 'kotlin_ktlint_executable')
+    let l:file_path = expand('#' . a:buffer . ':p')
+    let l:options = ''
+
+    " Formmatted content written to original file, not sure how to handle
+    " if ale#Var(a:buffer, 'kotlin_ktlint_format')
+    "     let l:options = l:options . ' --format'
+    " endif
+
+    for l:ruleset in ale#Var(a:buffer, 'kotlin_ktlint_rulesets')
+        let l:options = l:options . ' --ruleset ' . l:ruleset
+    endfor
+
+    return l:executable . ' ' . l:options . ' ' . l:file_path
+endfunction
+
+function! ale_linters#kotlin#ktlint#Handle(buffer, lines) abort
+    let l:message_pattern = '^\(.*\):\([0-9]\+\):\([0-9]\+\):\s\+\(.*\)'
+    let l:output = []
+
+    for l:match in ale#util#GetMatches(a:lines, l:message_pattern)
+        let l:line = l:match[2] + 0
+        let l:column = l:match[3] + 0
+        let l:text = l:match[4]
+
+        let l:type = l:text =~? 'not a valid kotlin file' ? 'E' : 'W'
+
+        call add(l:output, {
+        \   'lnum': l:line,
+        \   'col': l:column,
+        \   'text': l:text,
+        \   'type': l:type
+        \})
+    endfor
+
+    return l:output
+endfunction
+
+call ale#linter#Define('kotlin', {
+\   'name': 'ktlint',
+\   'executable': 'ktlint',
+\   'command_callback': 'ale_linters#kotlin#ktlint#GetCommand',
+\   'callback': 'ale_linters#kotlin#ktlint#Handle',
+\   'lint_file': 1
+\})
--- a/ale_linters/lua/luacheck.vim
+++ b/ale_linters/lua/luacheck.vim
@ -0,0 +1,45 @@
+" Author: Sol Bekic https://github.com/s-ol
+" Description: luacheck linter for lua files
+
+let g:ale_lua_luacheck_executable =
+\   get(g:, 'ale_lua_luacheck_executable', 'luacheck')
+
+let g:ale_lua_luacheck_options =
+\   get(g:, 'ale_lua_luacheck_options', '')
+
+function! ale_linters#lua#luacheck#GetExecutable(buffer) abort
+    return ale#Var(a:buffer, 'lua_luacheck_executable')
+endfunction
+
+function! ale_linters#lua#luacheck#GetCommand(buffer) abort
+    return ale#Escape(ale_linters#lua#luacheck#GetExecutable(a:buffer))
+    \   . ' ' . ale#Var(a:buffer, 'lua_luacheck_options')
+    \   . ' --formatter plain --codes --filename %s -'
+endfunction
+
+function! ale_linters#lua#luacheck#Handle(buffer, lines) abort
+    " Matches patterns line the following:
+    "
+    " artal.lua:159:17: (W111) shadowing definition of loop variable 'i' on line 106
+    " artal.lua:182:7: (W213) unused loop variable 'i'
+    let l:pattern = '^.*:\(\d\+\):\(\d\+\): (\([WE]\)\(\d\+\)) \(.\+\)$'
+    let l:output = []
+
+    for l:match in ale#util#GetMatches(a:lines, l:pattern)
+        call add(l:output, {
+        \   'lnum': l:match[1] + 0,
+        \   'col': l:match[2] + 0,
+        \   'text': l:match[3] . l:match[4] . ': ' . l:match[5],
+        \   'type': l:match[3],
+        \})
+    endfor
+
+    return l:output
+endfunction
+
+call ale#linter#Define('lua', {
+\   'name': 'luacheck',
+\   'executable_callback': 'ale_linters#lua#luacheck#GetExecutable',
+\   'command_callback': 'ale_linters#lua#luacheck#GetCommand',
+\   'callback': 'ale_linters#lua#luacheck#Handle',
+\})
--- a/ale_linters/markdown/mdl.vim
+++ b/ale_linters/markdown/mdl.vim
@ -0,0 +1,25 @@
+" Author: Steve Dignam <steve@dignam.xyz>
+" Description: Support for mdl, a markdown linter
+
+function! ale_linters#markdown#mdl#Handle(buffer, lines) abort
+    " matches: '(stdin):173: MD004 Unordered list style'
+    let l:pattern = ':\(\d*\): \(.*\)$'
+    let l:output = []
+
+    for l:match in ale#util#GetMatches(a:lines, l:pattern)
+        call add(l:output, {
+        \   'lnum': l:match[1] + 0,
+        \   'text': l:match[2],
+        \   'type': 'W',
+        \})
+    endfor
+
+    return l:output
+endfunction
+
+call ale#linter#Define('markdown', {
+\   'name': 'mdl',
+\   'executable': 'mdl',
+\   'command': 'mdl',
+\   'callback': 'ale_linters#markdown#mdl#Handle'
+\})
--- a/ale_linters/markdown/proselint.vim
+++ b/ale_linters/markdown/proselint.vim
@ -0,0 +1,9 @@
+" Author: poohzrn https://github.com/poohzrn
+" Description: proselint for Markdown files
+
+call ale#linter#Define('markdown', {
+\   'name': 'proselint',
+\   'executable': 'proselint',
+\   'command': 'proselint %t',
+\   'callback': 'ale#handlers#unix#HandleAsWarning',
+\})
--- a/ale_linters/markdown/vale.vim
+++ b/ale_linters/markdown/vale.vim
@ -0,0 +1,9 @@
+" Author: chew-z https://github.com/chew-z
+" Description: vale for Markdown files
+
+call ale#linter#Define('markdown', {
+\   'name': 'vale',
+\   'executable': 'vale',
+\   'command': 'vale --output=line %t',
+\   'callback': 'ale#handlers#unix#HandleAsWarning',
+\})
--- a/ale_linters/matlab/mlint.vim
+++ b/ale_linters/matlab/mlint.vim
@ -0,0 +1,55 @@
+" Author: awlayton <alex@layton.in>
+" Description: mlint for MATLAB files
+
+let g:ale_matlab_mlint_executable =
+\   get(g:, 'ale_matlab_mlint_executable', 'mlint')
+
+function! ale_linters#matlab#mlint#GetExecutable(buffer) abort
+    return ale#Var(a:buffer, 'matlab_mlint_executable')
+endfunction
+
+function! ale_linters#matlab#mlint#GetCommand(buffer) abort
+    let l:executable = ale_linters#matlab#mlint#GetExecutable(a:buffer)
+
+    return l:executable . ' -id %t'
+endfunction
+
+function! ale_linters#matlab#mlint#Handle(buffer, lines) abort
+    " Matches patterns like the following:
+    "
+    " L 27 (C 1): FNDEF: Terminate statement with semicolon to suppress output.
+    " L 30 (C 13-15): FNDEF: A quoted string is unterminated.
+    let l:pattern = '^L \(\d\+\) (C \([0-9-]\+\)): \([A-Z]\+\): \(.\+\)$'
+    let l:output = []
+
+    for l:match in ale#util#GetMatches(a:lines, l:pattern)
+        let l:lnum = l:match[1] + 0
+        let l:col = l:match[2] + 0
+        let l:code = l:match[3]
+        let l:text = l:match[4]
+
+        " Suppress erroneous waring about filename
+        " TODO: Enable this error when copying filename is supported
+        if l:code is# 'FNDEF'
+            continue
+        endif
+
+        call add(l:output, {
+        \   'bufnr': a:buffer,
+        \   'lnum': l:lnum,
+        \   'col': l:col,
+        \   'text': l:text,
+        \   'type': 'W',
+        \})
+    endfor
+
+    return l:output
+endfunction
+
+call ale#linter#Define('matlab', {
+\   'name': 'mlint',
+\   'executable_callback': 'ale_linters#matlab#mlint#GetExecutable',
+\   'command_callback': 'ale_linters#matlab#mlint#GetCommand',
+\   'output_stream': 'stderr',
+\   'callback': 'ale_linters#matlab#mlint#Handle',
+\})
--- a/ale_linters/nim/nimcheck.vim
+++ b/ale_linters/nim/nimcheck.vim
@ -0,0 +1,58 @@
+" Author: Baabelfish
+" Description: Typechecking for nim files
+
+function! ale_linters#nim#nimcheck#Handle(buffer, lines) abort
+    let l:buffer_filename = fnamemodify(bufname(a:buffer), ':p:t')
+    let l:pattern = '^\(.\+\.nim\)(\(\d\+\), \(\d\+\)) \(.\+\)'
+    let l:output = []
+
+    for l:match in ale#util#GetMatches(a:lines, l:pattern)
+        " Only show errors of the current buffer
+        " NOTE: Checking filename only is OK because nim enforces unique
+        "       module names.
+
+        let l:temp_buffer_filename = fnamemodify(l:match[1], ':p:t')
+        if l:buffer_filename isnot# '' && l:temp_buffer_filename isnot# l:buffer_filename
+            continue
+        endif
+
+        let l:line = l:match[2] + 0
+        let l:column = l:match[3] + 0
+        let l:text = l:match[4]
+        let l:type = 'W'
+
+        " Extract error type from message of type 'Error: Some error message'
+        let l:textmatch = matchlist(l:match[4], '^\(.\{-}\): .\+$')
+
+        if len(l:textmatch) > 0
+            let l:errortype = l:textmatch[1]
+            if l:errortype is# 'Error'
+                let l:type = 'E'
+            endif
+        endif
+
+        call add(l:output, {
+        \   'lnum': l:line,
+        \   'col': l:column,
+        \   'text': l:text,
+        \   'type': l:type,
+        \})
+    endfor
+
+    return l:output
+endfunction
+
+
+function! ale_linters#nim#nimcheck#GetCommand(buffer) abort
+    return 'nim check --verbosity:0 --colors:off --listFullPaths %s'
+endfunction
+
+
+call ale#linter#Define('nim', {
+\    'name': 'nimcheck',
+\    'executable': 'nim',
+\    'output_stream': 'both',
+\    'command_callback': 'ale_linters#nim#nimcheck#GetCommand',
+\    'callback': 'ale_linters#nim#nimcheck#Handle',
+\    'lint_file': 1,
+\})
--- a/ale_linters/nix/nix.vim
+++ b/ale_linters/nix/nix.vim
@ -0,0 +1,26 @@
+" Author: Alistair Bill <@alibabzo>
+" Description: nix-instantiate linter for nix files
+
+function! ale_linters#nix#nix#Handle(buffer, lines) abort
+    let l:pattern = '^\(.\+\): \(.\+\), at .*:\(\d\+\):\(\d\+\)$'
+    let l:output = []
+
+    for l:match in ale#util#GetMatches(a:lines, l:pattern)
+        call add(l:output, {
+        \   'lnum': l:match[3] + 0,
+        \   'col': l:match[4] + 0,
+        \   'text': l:match[1] . ': ' . l:match[2],
+        \   'type': l:match[1] =~# '^error' ? 'E' : 'W',
+        \})
+    endfor
+
+    return l:output
+endfunction
+
+call ale#linter#Define('nix', {
+\   'name': 'nix',
+\   'output_stream': 'stderr',
+\   'executable': 'nix-instantiate',
+\   'command': 'nix-instantiate --parse -',
+\   'callback': 'ale_linters#nix#nix#Handle',
+\})
--- a/ale_linters/nroff/proselint.vim
+++ b/ale_linters/nroff/proselint.vim
@ -0,0 +1,9 @@
+" Author: Daniel M. Capella https://github.com/polyzen
+" Description: proselint for nroff files
+
+call ale#linter#Define('nroff', {
+\   'name': 'proselint',
+\   'executable': 'proselint',
+\   'command': 'proselint %t',
+\   'callback': 'ale#handlers#unix#HandleAsWarning',
+\})
--- a/ale_linters/objc/clang.vim
+++ b/ale_linters/objc/clang.vim
@ -0,0 +1,23 @@
+" Author: Bang Lee <https://github.com/Qusic>
+" Description: clang linter for objc files
+
+" Set this option to change the Clang options for warnings for ObjC.
+if !exists('g:ale_objc_clang_options')
+    let g:ale_objc_clang_options = '-std=c11 -Wall'
+endif
+
+function! ale_linters#objc#clang#GetCommand(buffer) abort
+    " -iquote with the directory the file is in makes #include work for
+    "  headers in the same directory.
+    return 'clang -S -x objective-c -fsyntax-only '
+    \   . '-iquote ' . ale#Escape(fnamemodify(bufname(a:buffer), ':p:h'))
+    \   . ' ' . ale#Var(a:buffer, 'objc_clang_options') . ' -'
+endfunction
+
+call ale#linter#Define('objc', {
+\   'name': 'clang',
+\   'output_stream': 'stderr',
+\   'executable': 'clang',
+\   'command_callback': 'ale_linters#objc#clang#GetCommand',
+\   'callback': 'ale#handlers#gcc#HandleGCCFormat',
+\})
--- a/ale_linters/objcpp/clang.vim
+++ b/ale_linters/objcpp/clang.vim
@ -0,0 +1,23 @@
+" Author: Bang Lee <https://github.com/Qusic>
+" Description: clang linter for objcpp files
+
+" Set this option to change the Clang options for warnings for ObjCPP.
+if !exists('g:ale_objcpp_clang_options')
+    let g:ale_objcpp_clang_options = '-std=c++14 -Wall'
+endif
+
+function! ale_linters#objcpp#clang#GetCommand(buffer) abort
+    " -iquote with the directory the file is in makes #include work for
+    "  headers in the same directory.
+    return 'clang++ -S -x objective-c++ -fsyntax-only '
+    \   . '-iquote ' . ale#Escape(fnamemodify(bufname(a:buffer), ':p:h'))
+    \   . ' ' . ale#Var(a:buffer, 'objcpp_clang_options') . ' -'
+endfunction
+
+call ale#linter#Define('objcpp', {
+\   'name': 'clang',
+\   'output_stream': 'stderr',
+\   'executable': 'clang++',
+\   'command_callback': 'ale_linters#objcpp#clang#GetCommand',
+\   'callback': 'ale#handlers#gcc#HandleGCCFormat',
+\})
--- a/ale_linters/ocaml/merlin.vim
+++ b/ale_linters/ocaml/merlin.vim
@ -0,0 +1,17 @@
+" Author: Andrey Popp -- @andreypopp
+" Description: Report errors in OCaml code with Merlin
+
+if !exists('g:merlin')
+    finish
+endif
+
+function! ale_linters#ocaml#merlin#Handle(buffer, lines) abort
+    return merlin#ErrorLocList()
+endfunction
+
+call ale#linter#Define('ocaml', {
+\   'name': 'merlin',
+\   'executable': 'ocamlmerlin',
+\   'command': 'true',
+\   'callback': 'ale_linters#ocaml#merlin#Handle',
+\})
--- a/ale_linters/perl/perl.vim
+++ b/ale_linters/perl/perl.vim
@ -0,0 +1,58 @@
+" Author: Vincent Lequertier <https://github.com/SkySymbol>
+" Description: This file adds support for checking perl syntax
+
+let g:ale_perl_perl_executable =
+\   get(g:, 'ale_perl_perl_executable', 'perl')
+
+let g:ale_perl_perl_options =
+\   get(g:, 'ale_perl_perl_options', '-c -Mwarnings -Ilib')
+
+function! ale_linters#perl#perl#GetExecutable(buffer) abort
+    return ale#Var(a:buffer, 'perl_perl_executable')
+endfunction
+
+function! ale_linters#perl#perl#GetCommand(buffer) abort
+    return ale_linters#perl#perl#GetExecutable(a:buffer)
+    \   . ' ' . ale#Var(a:buffer, 'perl_perl_options')
+    \   . ' %t'
+endfunction
+
+let s:begin_failed_skip_pattern = '\v' . join([
+\   '^Compilation failed in require',
+\   '^Can''t locate',
+\], '|')
+
+function! ale_linters#perl#perl#Handle(buffer, lines) abort
+    let l:pattern = '\(.\+\) at \(.\+\) line \(\d\+\)'
+    let l:output = []
+    let l:basename = expand('#' . a:buffer . ':t')
+
+    for l:match in ale#util#GetMatches(a:lines, l:pattern)
+        let l:line = l:match[3]
+        let l:text = l:match[1]
+        let l:type = 'E'
+
+        if ale#path#IsBufferPath(a:buffer, l:match[2])
+        \ && (
+        \   l:text isnot# 'BEGIN failed--compilation aborted'
+        \   || empty(l:output)
+        \   || match(l:output[-1].text, s:begin_failed_skip_pattern) < 0
+        \ )
+            call add(l:output, {
+            \   'lnum': l:line,
+            \   'text': l:text,
+            \   'type': l:type,
+            \})
+        endif
+    endfor
+
+    return l:output
+endfunction
+
+call ale#linter#Define('perl', {
+\   'name': 'perl',
+\   'executable_callback': 'ale_linters#perl#perl#GetExecutable',
+\   'output_stream': 'both',
+\   'command_callback': 'ale_linters#perl#perl#GetCommand',
+\   'callback': 'ale_linters#perl#perl#Handle',
+\})
--- a/ale_linters/perl/perlcritic.vim
+++ b/ale_linters/perl/perlcritic.vim
@ -0,0 +1,76 @@
+" Author: Vincent Lequertier <https://github.com/SkySymbol>, Chris Weyl <cweyl@alumni.drew.edu>
+" Description: This file adds support for checking perl with perl critic
+
+let g:ale_perl_perlcritic_executable =
+\   get(g:, 'ale_perl_perlcritic_executable', 'perlcritic')
+
+let g:ale_perl_perlcritic_profile =
+\   get(g:, 'ale_perl_perlcritic_profile', '.perlcriticrc')
+
+let g:ale_perl_perlcritic_options =
+\   get(g:, 'ale_perl_perlcritic_options', '')
+
+let g:ale_perl_perlcritic_showrules =
+\   get(g:, 'ale_perl_perlcritic_showrules', 0)
+
+function! ale_linters#perl#perlcritic#GetExecutable(buffer) abort
+    return ale#Var(a:buffer, 'perl_perlcritic_executable')
+endfunction
+
+function! ale_linters#perl#perlcritic#GetProfile(buffer) abort
+
+    " first see if we've been overridden
+    let l:profile = ale#Var(a:buffer, 'perl_perlcritic_profile')
+    if l:profile is? ''
+        return ''
+    endif
+
+    " otherwise, iterate upwards to find it
+    return ale#path#FindNearestFile(a:buffer, l:profile)
+endfunction
+
+function! ale_linters#perl#perlcritic#GetCommand(buffer) abort
+    let l:critic_verbosity = '%l:%c %m\n'
+    if ale#Var(a:buffer, 'perl_perlcritic_showrules')
+        let l:critic_verbosity = '%l:%c %m [%p]\n'
+    endif
+
+    let l:profile = ale_linters#perl#perlcritic#GetProfile(a:buffer)
+    let l:options = ale#Var(a:buffer, 'perl_perlcritic_options')
+
+    let l:command = ale#Escape(ale_linters#perl#perlcritic#GetExecutable(a:buffer))
+    \   . " --verbose '". l:critic_verbosity . "' --nocolor"
+
+    if l:profile isnot? ''
+        let l:command .= ' --profile ' . ale#Escape(l:profile)
+    endif
+    if l:options isnot? ''
+        let l:command .= ' ' . l:options
+    endif
+
+    return l:command
+endfunction
+
+
+function! ale_linters#perl#perlcritic#Handle(buffer, lines) abort
+    let l:pattern = '\(\d\+\):\(\d\+\) \(.\+\)'
+    let l:output = []
+
+    for l:match in ale#util#GetMatches(a:lines, l:pattern)
+        call add(l:output, {
+        \   'lnum': l:match[1],
+        \   'col': l:match[2],
+        \   'text': l:match[3],
+        \})
+    endfor
+
+    return l:output
+endfunction
+
+call ale#linter#Define('perl', {
+\   'name': 'perlcritic',
+\   'output_stream': 'stdout',
+\   'executable_callback': 'ale_linters#perl#perlcritic#GetExecutable',
+\   'command_callback': 'ale_linters#perl#perlcritic#GetCommand',
+\   'callback': 'ale_linters#perl#perlcritic#Handle',
+\})
--- a/ale_linters/php/hack.vim
+++ b/ale_linters/php/hack.vim
@ -0,0 +1,28 @@
+" Author: Zefei Xuan <https://github.com/zefei>
+" Description: Hack type checking (http://hacklang.org/)
+
+function! ale_linters#php#hack#Handle(buffer, lines) abort
+    let l:pattern = '^\(.*\):\(\d\+\):\(\d\+\),\(\d\+\): \(.\+])\)$'
+    let l:output = []
+
+    for l:match in ale#util#GetMatches(a:lines, l:pattern)
+        if a:buffer != bufnr(l:match[1])
+            continue
+        endif
+
+        call add(l:output, {
+        \   'lnum': l:match[2] + 0,
+        \   'col': l:match[3] + 0,
+        \   'text': l:match[5],
+        \})
+    endfor
+
+    return l:output
+endfunction
+
+call ale#linter#Define('php', {
+\   'name': 'hack',
+\   'executable': 'hh_client',
+\   'command': 'hh_client --retries 0 --retry-if-init false',
+\   'callback': 'ale_linters#php#hack#Handle',
+\})
--- a/ale_linters/php/langserver.vim
+++ b/ale_linters/php/langserver.vim
@ -0,0 +1,34 @@
+" Author: Eric Stern <eric@ericstern.com>
+" Description: PHP Language server integration for ALE
+
+call ale#Set('php_langserver_executable', 'php-language-server.php')
+call ale#Set('php_langserver_use_global', 0)
+
+function! ale_linters#php#langserver#GetExecutable(buffer) abort
+    return ale#node#FindExecutable(a:buffer, 'php_langserver', [
+    \   'vendor/bin/php-language-server.php',
+    \])
+endfunction
+
+function! ale_linters#php#langserver#GetCommand(buffer) abort
+    return 'php ' . ale#Escape(ale_linters#php#langserver#GetExecutable(a:buffer))
+endfunction
+
+function! ale_linters#php#langserver#GetLanguage(buffer) abort
+    return 'php'
+endfunction
+
+function! ale_linters#php#langserver#GetProjectRoot(buffer) abort
+    let l:git_path = ale#path#FindNearestDirectory(a:buffer, '.git')
+
+    return !empty(l:git_path) ? fnamemodify(l:git_path, ':h:h') : ''
+endfunction
+
+call ale#linter#Define('php', {
+\   'name': 'langserver',
+\   'lsp': 'stdio',
+\   'executable_callback': 'ale_linters#php#langserver#GetExecutable',
+\   'command_callback': 'ale_linters#php#langserver#GetCommand',
+\   'language_callback': 'ale_linters#php#langserver#GetLanguage',
+\   'project_root_callback': 'ale_linters#php#langserver#GetProjectRoot',
+\})
--- a/ale_linters/php/php.vim
+++ b/ale_linters/php/php.vim
@ -0,0 +1,35 @@
+" Author: Spencer Wood <https://github.com/scwood>, Adriaan Zonnenberg <amz@adriaan.xyz>
+" Description: This file adds support for checking PHP with php-cli
+
+function! ale_linters#php#php#Handle(buffer, lines) abort
+    " Matches patterns like the following:
+    "
+    " Parse error:  syntax error, unexpected ';', expecting ']' in - on line 15
+    let l:pattern = '\v^%(Fatal|Parse) error:\s+(.+unexpected ''(.+)%(expecting.+)@<!''.*|.+) in - on line (\d+)'
+    let l:output = []
+
+    for l:match in ale#util#GetMatches(a:lines, l:pattern)
+        let l:col = empty(l:match[2]) ? 0 : stridx(getline(l:match[3]), l:match[2]) + 1
+        let l:obj = {
+        \   'lnum': l:match[3] + 0,
+        \   'col': l:col,
+        \   'text': l:match[1],
+        \}
+
+        if l:col != 0
+            let l:obj.end_col = l:col + strlen(l:match[2]) - 1
+        endif
+
+        call add(l:output, l:obj)
+    endfor
+
+    return l:output
+endfunction
+
+call ale#linter#Define('php', {
+\   'name': 'php',
+\   'executable': 'php',
+\   'output_stream': 'stdout',
+\   'command': 'php -l -d error_reporting=E_ALL -d display_errors=1 --',
+\   'callback': 'ale_linters#php#php#Handle',
+\})
--- a/ale_linters/php/phpcs.vim
+++ b/ale_linters/php/phpcs.vim
@ -0,0 +1,55 @@
+" Author: jwilliams108 <https://github.com/jwilliams108>, Eric Stern <https://github.com/firehed>
+" Description: phpcs for PHP files
+
+let g:ale_php_phpcs_standard = get(g:, 'ale_php_phpcs_standard', '')
+
+call ale#Set('php_phpcs_executable', 'phpcs')
+call ale#Set('php_phpcs_use_global', 0)
+
+function! ale_linters#php#phpcs#GetExecutable(buffer) abort
+    return ale#node#FindExecutable(a:buffer, 'php_phpcs', [
+    \   'vendor/bin/phpcs',
+    \   'phpcs'
+    \])
+endfunction
+
+function! ale_linters#php#phpcs#GetCommand(buffer) abort
+    let l:executable = ale_linters#php#phpcs#GetExecutable(a:buffer)
+
+    let l:standard = ale#Var(a:buffer, 'php_phpcs_standard')
+    let l:standard_option = !empty(l:standard)
+    \   ? '--standard=' . l:standard
+    \   : ''
+
+    return ale#Escape(l:executable)
+    \   . ' -s --report=emacs --stdin-path=%s ' . l:standard_option
+endfunction
+
+function! ale_linters#php#phpcs#Handle(buffer, lines) abort
+    " Matches against lines like the following:
+    "
+    " /path/to/some-filename.php:18:3: error - Line indented incorrectly; expected 4 spaces, found 2 (Generic.WhiteSpace.ScopeIndent.IncorrectExact)
+    let l:pattern = '^.*:\(\d\+\):\(\d\+\): \(.\+\) - \(.\+\) \(\(.\+\)\)$'
+    let l:output = []
+
+    for l:match in ale#util#GetMatches(a:lines, l:pattern)
+        let l:text = l:match[4]
+        let l:type = l:match[3]
+
+        call add(l:output, {
+        \   'lnum': l:match[1] + 0,
+        \   'col': l:match[2] + 0,
+        \   'text': l:text,
+        \   'type': l:type is# 'error' ? 'E' : 'W',
+        \})
+    endfor
+
+    return l:output
+endfunction
+
+call ale#linter#Define('php', {
+\   'name': 'phpcs',
+\   'executable_callback': 'ale_linters#php#phpcs#GetExecutable',
+\   'command_callback': 'ale_linters#php#phpcs#GetCommand',
+\   'callback': 'ale_linters#php#phpcs#Handle',
+\})
--- a/ale_linters/php/phpmd.vim
+++ b/ale_linters/php/phpmd.vim
@ -0,0 +1,36 @@
+" Author: medains <https://github.com/medains>
+" Description: phpmd for PHP files
+
+" Set to change the ruleset
+let g:ale_php_phpmd_ruleset = get(g:, 'ale_php_phpmd_ruleset', 'cleancode,codesize,controversial,design,naming,unusedcode')
+
+function! ale_linters#php#phpmd#GetCommand(buffer) abort
+    return 'phpmd %s text '
+    \   . ale#Var(a:buffer, 'php_phpmd_ruleset')
+    \   . ' --ignore-violations-on-exit %t'
+endfunction
+
+function! ale_linters#php#phpmd#Handle(buffer, lines) abort
+    " Matches against lines like the following:
+    "
+    " /path/to/some-filename.php:18 message
+    let l:pattern = '^.*:\(\d\+\)\t\(.\+\)$'
+    let l:output = []
+
+    for l:match in ale#util#GetMatches(a:lines, l:pattern)
+        call add(l:output, {
+        \   'lnum': l:match[1] + 0,
+        \   'text': l:match[2],
+        \   'type': 'W',
+        \})
+    endfor
+
+    return l:output
+endfunction
+
+call ale#linter#Define('php', {
+\   'name': 'phpmd',
+\   'executable': 'phpmd',
+\   'command_callback': 'ale_linters#php#phpmd#GetCommand',
+\   'callback': 'ale_linters#php#phpmd#Handle',
+\})
--- a/ale_linters/php/phpstan.vim
+++ b/ale_linters/php/phpstan.vim
@ -0,0 +1,46 @@
+" Author: medains <https://github.com/medains>, ardis <https://github.com/ardisdreelath>
+" Description: phpstan for PHP files
+
+" Set to change the ruleset
+let g:ale_php_phpstan_executable = get(g:, 'ale_php_phpstan_executable', 'phpstan')
+let g:ale_php_phpstan_level = get(g:, 'ale_php_phpstan_level', '4')
+
+function! ale_linters#php#phpstan#GetExecutable(buffer) abort
+    return ale#Var(a:buffer, 'php_phpstan_executable')
+endfunction
+
+function! ale_linters#php#phpstan#GetCommand(buffer) abort
+    let l:executable = ale_linters#php#phpstan#GetExecutable(a:buffer)
+
+    return ale#Escape(l:executable)
+    \   . ' analyze -l'
+    \   . ale#Var(a:buffer, 'php_phpstan_level')
+    \   . ' --errorFormat raw'
+    \   . ' %s'
+endfunction
+
+function! ale_linters#php#phpstan#Handle(buffer, lines) abort
+    " Matches against lines like the following:
+    "
+    " filename.php:15:message
+    " C:\folder\filename.php:15:message
+    let l:pattern = '^\([a-zA-Z]:\)\?[^:]\+:\(\d\+\):\(.*\)$'
+    let l:output = []
+
+    for l:match in ale#util#GetMatches(a:lines, l:pattern)
+        call add(l:output, {
+        \   'lnum': l:match[2] + 0,
+        \   'text': l:match[3],
+        \   'type': 'W',
+        \})
+    endfor
+
+    return l:output
+endfunction
+
+call ale#linter#Define('php', {
+\   'name': 'phpstan',
+\   'executable_callback': 'ale_linters#php#phpstan#GetExecutable',
+\   'command_callback': 'ale_linters#php#phpstan#GetCommand',
+\   'callback': 'ale_linters#php#phpstan#Handle',
+\})
--- a/ale_linters/pod/proselint.vim
+++ b/ale_linters/pod/proselint.vim
@ -0,0 +1,9 @@
+" Author: Daniel M. Capella https://github.com/polyzen
+" Description: proselint for Pod files
+
+call ale#linter#Define('pod', {
+\   'name': 'proselint',
+\   'executable': 'proselint',
+\   'command': 'proselint %t',
+\   'callback': 'ale#handlers#unix#HandleAsWarning',
+\})
--- a/ale_linters/pug/puglint.vim
+++ b/ale_linters/pug/puglint.vim
@ -0,0 +1,48 @@
+" Author: w0rp - <devw0rp@gmail.com>
+" Description: pug-lint for checking Pug/Jade files.
+
+call ale#Set('pug_puglint_options', '')
+call ale#Set('pug_puglint_executable', 'pug-lint')
+call ale#Set('pug_puglint_use_global', 0)
+
+function! ale_linters#pug#puglint#GetExecutable(buffer) abort
+    return ale#node#FindExecutable(a:buffer, 'pug_puglint', [
+    \   'node_modules/.bin/pug-lint',
+    \])
+endfunction
+
+function! s:FindConfig(buffer) abort
+    for l:filename in [
+    \   '.pug-lintrc',
+    \   '.pug-lintrc.js',
+    \   '.pug-lintrc.json',
+    \   'package.json',
+    \]
+        let l:config = ale#path#FindNearestFile(a:buffer, l:filename)
+
+        if !empty(l:config)
+            return l:config
+        endif
+    endfor
+
+    return ''
+endfunction
+
+function! ale_linters#pug#puglint#GetCommand(buffer) abort
+    let l:executable = ale_linters#pug#puglint#GetExecutable(a:buffer)
+    let l:options = ale#Var(a:buffer, 'pug_puglint_options')
+    let l:config = s:FindConfig(a:buffer)
+
+    return ale#Escape(l:executable)
+    \   . (!empty(l:options) ? ' ' . l:options : '')
+    \   . (!empty(l:config) ? ' -c ' . ale#Escape(l:config) : '')
+    \   . ' -r inline %t'
+endfunction
+
+call ale#linter#Define('pug', {
+\   'name': 'puglint',
+\   'executable_callback': 'ale_linters#pug#puglint#GetExecutable',
+\   'output_stream': 'stderr',
+\   'command_callback': 'ale_linters#pug#puglint#GetCommand',
+\   'callback': 'ale#handlers#unix#HandleAsError',
+\})
--- a/ale_linters/puppet/puppet.vim
+++ b/ale_linters/puppet/puppet.vim
@ -0,0 +1,27 @@
+" Author: Alexander Olofsson <alexander.olofsson@liu.se>
+
+function! ale_linters#puppet#puppet#Handle(buffer, lines) abort
+    " Matches patterns like the following:
+    " Error: Could not parse for environment production: Syntax error at ':' at /root/puppetcode/modules/nginx/manifests/init.pp:43:12
+
+    let l:pattern = '^Error: .*: \(.\+\) at .\+:\(\d\+\):\(\d\+\)$'
+    let l:output = []
+
+    for l:match in ale#util#GetMatches(a:lines, l:pattern)
+        call add(l:output, {
+        \   'lnum': l:match[2] + 0,
+        \   'col': l:match[3] + 0,
+        \   'text': l:match[1],
+        \})
+    endfor
+
+    return l:output
+endfunction
+
+call ale#linter#Define('puppet', {
+\   'name': 'puppet',
+\   'executable': 'puppet',
+\   'output_stream': 'stderr',
+\   'command': 'puppet parser validate --color=false %t',
+\   'callback': 'ale_linters#puppet#puppet#Handle',
+\})
--- a/ale_linters/puppet/puppetlint.vim
+++ b/ale_linters/puppet/puppetlint.vim
@ -0,0 +1,26 @@
+" Author: Alexander Olofsson <alexander.olofsson@liu.se>, Robert Flechtner <flechtner@chemmedia.de>
+" Description: puppet-lint for puppet files
+
+let g:ale_puppet_puppetlint_executable =
+\   get(g:, 'ale_puppet_puppetlint_executable', 'puppet-lint')
+
+let g:ale_puppet_puppetlint_options =
+\   get(g:, 'ale_puppet_puppetlint_options', '--no-autoloader_layout-check')
+
+function! ale_linters#puppet#puppetlint#GetExecutable(buffer) abort
+    return ale#Var(a:buffer, 'puppet_puppetlint_executable')
+endfunction
+
+function! ale_linters#puppet#puppetlint#GetCommand(buffer) abort
+    return ale_linters#puppet#puppetlint#GetExecutable(a:buffer)
+    \   . ' ' . ale#Var(a:buffer, 'puppet_puppetlint_options')
+    \   . ' --log-format "-:%{line}:%{column}: %{kind}: [%{check}] %{message}"'
+    \   . ' %t'
+endfunction
+
+call ale#linter#Define('puppet', {
+\   'name': 'puppetlint',
+\   'executable_callback': 'ale_linters#puppet#puppetlint#GetExecutable',
+\   'command_callback': 'ale_linters#puppet#puppetlint#GetCommand',
+\   'callback': 'ale#handlers#gcc#HandleGCCFormat',
+\})
--- a/ale_linters/pyrex/cython.vim
+++ b/ale_linters/pyrex/cython.vim
@ -0,0 +1,10 @@
+" Author: w0rp <devw0rp@gmail.com>
+" Description: cython syntax checking for cython files.
+
+call ale#linter#Define('pyrex', {
+\   'name': 'cython',
+\   'output_stream': 'stderr',
+\   'executable': 'cython',
+\   'command': 'cython --warning-extra -o ' . g:ale#util#nul_file . ' %t',
+\   'callback': 'ale#handlers#unix#HandleAsError',
+\})
--- a/Show More
+++ b/Show More