Document ale#Has

Fix missing character in %severity%

.github/CONTRIBUTING.md

@@ -3,7 +3,7 @@
 Have fun, and work on whatever floats your boat. Take It Easy :tm:.
 
 For help with contributing to ALE, see `:help ale-development` in Vim, or view
-the help file online [here](/w0rp/ale/blob/master/doc/ale-development.txt).
+the help file online [here](/doc/ale-development.txt).
 
 ## Creating Issues
 

.github/ISSUE_TEMPLATE/report-a-bug.md

@@ -23,14 +23,13 @@ about: Report a bug with ALE.
 
 Operating System: <!-- Describe your operating system version. -->
 
-### :ALEInfo
-
-<!-- Paste the output of :ALEInfo here. Try :ALEInfoToClipboard -->
-<!-- Make sure to run :ALEInfo from the buffer where the bug occurred. -->
-
 ## What went wrong
 
-<!-- Describe what went wrong here. -->
+<!-- Describe what went wrong here. Be specific. -->
+
+Something went wrong in specifically this place, and I also searched through both open and closed issues for the same problem before reporting a bug here.
+
+Are you having trouble configuring ALE? Try asking for help on [Stack Exchange](https://vi.stackexchange.com/) or perhaps on [Reddit](https://www.reddit.com/r/vim/) instead. The GitHub issue tracker should be used for reporting bugs or asking for new features.
 
 ## Reproducing the bug
 
@@ -38,3 +37,9 @@ Operating System: <!-- Describe your operating system version. -->
 
 1. I did this.
 2. Then this happened.
+
+### :ALEInfo
+
+<!-- Paste the output of :ALEInfo here. Try :ALEInfoToClipboard -->
+<!-- Make sure to run :ALEInfo from the buffer where the bug occurred. -->
+<!-- Read the output. You might figure out what went wrong yourself. -->

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,13 @@
+<!--
+Before creating a pull request, do the following.
+
+* Read the Contributing guide linked above first.
+* Read the documentation that comes with ALE with `:help ale-dev`.
+
+Have fun!
+-->
+
+Where are the tests? Have you added tests? Have you updated the tests? Read the
+comment above and the documentation referenced in it first. Write tests!
+
+Seriously, read `:help ale-dev` and write tests.

.gitignore

@@ -1,5 +1,7 @@
 !.editorconfig
 *.obj
+# Ignore all hidden files everywhere.
+# Use `git add -f` to add hidden files.
 .*
 /doc/tags
 /init.vim

.travis.yml

@@ -3,5 +3,10 @@ sudo: required
 services:
     - docker
 language: generic
+env:
+    - OPTIONS=--vim-80-only
+    - OPTIONS=--vim-81-only
+    - OPTIONS=--neovim-only
+    - OPTIONS=--linters-only
 script: |
-    ./run-tests -v
+    ./run-tests -v $OPTIONS

Dockerfile

@@ -1,6 +1,7 @@
 FROM tweekmonster/vim-testbed:latest
 
 RUN install_vim -tag v8.0.0027 -build \
+                -tag v8.1.0204 -build \
                 -tag neovim:v0.2.0 -build \
                 -tag neovim:v0.3.0 -build
 

PULL_REQUEST_TEMPLATE.md

@@ -1,8 +0,0 @@
-<!--
-Before creating a pull request, do the following.
-
-* Read the Contributing guide linked above first.
-* Read the documentation that comes with ALE with `:help ale-development`.
-
-Have fun!
--->

README.md

@@ -1,12 +1,13 @@
-# Asynchronous Lint Engine [![Travis CI Build Status](https://travis-ci.org/w0rp/ale.svg?branch=master)](https://travis-ci.org/w0rp/ale) [![AppVeyor Build Status](https://ci.appveyor.com/api/projects/status/r0ef1xu8xjmik58d/branch/master?svg=true)](https://ci.appveyor.com/project/w0rp/ale)
+# Asynchronous Lint Engine [![Travis CI Build Status](https://travis-ci.org/w0rp/ale.svg?branch=master)](https://travis-ci.org/w0rp/ale) [![AppVeyor Build Status](https://ci.appveyor.com/api/projects/status/r0ef1xu8xjmik58d/branch/master?svg=true)](https://ci.appveyor.com/project/w0rp/ale) [![Join the chat at https://gitter.im/vim-ale/Lobby](https://badges.gitter.im/vim-ale/Lobby.svg)](https://gitter.im/vim-ale/Lobby?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
 
 
 ![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
-0.2.0+ and Vim 8 while you edit your text files.
+ALE (Asynchronous Lint Engine) is a plugin for providing linting (checking
+syntax and semantics) in NeoVim 0.2.0+ and Vim 8 while you edit your text files,
+and acts as a Vim [Language Server Protocol](https://langserver.org/) client.
 
-![linting example](img/example.gif?raw=true)
+<img src="img/example.gif?raw=true" alt="A linting example with the darkspectrum color scheme in GVim." title="A linting example with the darkspectrum color scheme in GVim.">
 
 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
@@ -25,14 +26,18 @@ features, including:
 
 * Diagnostics (via Language Server Protocol linters)
 * Go To Definition (`:ALEGoToDefinition`)
-* Completion (`let g:ale_completion_enabled = 1`)
+* Completion (`let g:ale_completion_enabled = 1` before ALE is loaded)
 * Finding references (`:ALEFindReferences`)
 * Hover information (`:ALEHover`)
+* Symbol search (`:ALESymbolSearch`)
 
 If you don't care about Language Server Protocol, ALE won't load any of the code
 for working with it unless needed. One of ALE's general missions is that you
 won't pay for the features that you don't use.
 
+If you enjoy this plugin, feel free to contribute or check out the author's
+other content at [w0rp.com](https://w0rp.com).
+
 ## Table of Contents
 
 1. [Supported Languages and Tools](#supported-languages)
@@ -43,10 +48,12 @@ won't pay for the features that you don't use.
     4. [Go To Definition](#usage-go-to-definition)
     5. [Find References](#usage-find-references)
     6. [Hovering](#usage-hover)
+    7. [Symbol Search](#usage-symbol-search)
 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. [Installation with Vim-Plug](#installation-with-vim-plug)
 4. [Contributing](#contributing)
 5. [FAQ](#faq)
     1. [How do I disable particular linters?](#faq-disable-linters)
@@ -61,134 +68,20 @@ won't pay for the features that you don't use.
     10. [How can I run linters only when I save files?](#faq-lint-on-save)
     11. [How can I use the quickfix list instead of the loclist?](#faq-quickfix)
     12. [How can I check JSX files with both stylelint and eslint?](#faq-jsx-stylelint-eslint)
-    13. [Will this plugin eat all of my laptop battery power?](#faq-my-battery-is-sad)
-    14. [How can I configure my C or C++ project?](#faq-c-configuration)
-    15. [How can I configure ALE differently for different buffers?](#faq-buffer-configuration)
-    16. [How can I configure the height of the list in which ALE displays errors?](#faq-list-window-height)
+    13. [How can I check Vue files with ESLint?](#faq-vue-eslint)
+    14. [Will this plugin eat all of my laptop battery power?](#faq-my-battery-is-sad)
+    15. [How can I configure my C or C++ project?](#faq-c-configuration)
+    16. [How can I configure ALE differently for different buffers?](#faq-buffer-configuration)
+    17. [How can I configure the height of the list in which ALE displays errors?](#faq-list-window-height)
+    18. [How can I see what ALE has configured for the current file?](#faq-get-info)
 
 <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.
-
-Remember to also update doc/ale.txt, which has a similar list with different
-formatting.
--->
-
-**Notes:**
-
-* *^ No linters for text or Vim help filetypes are enabled by default.*
-* *!! These linters check only files on disk. See `:help ale-lint-file-linters`*
-
-| Language | Tools |
-| -------- | ----- |
-| ASM | [gcc](https://gcc.gnu.org) |
-| Ansible | [ansible-lint](https://github.com/willthames/ansible-lint) |
-| API Blueprint | [drafter](https://github.com/apiaryio/drafter) |
-| AsciiDoc | [alex](https://github.com/wooorm/alex) !!, [proselint](http://proselint.com/), [redpen](http://redpen.cc/), [write-good](https://github.com/btford/write-good) |
-| Awk | [gawk](https://www.gnu.org/software/gawk/)|
-| Bash | [language-server](https://github.com/mads-hartmann/bash-language-server), shell [-n flag](https://www.gnu.org/software/bash/manual/bash.html#index-set), [shellcheck](https://www.shellcheck.net/), [shfmt](https://github.com/mvdan/sh) |
-| Bourne Shell | shell [-n flag](http://linux.die.net/man/1/sh), [shellcheck](https://www.shellcheck.net/), [shfmt](https://github.com/mvdan/sh) |
-| C | [cppcheck](http://cppcheck.sourceforge.net), [cpplint](https://github.com/google/styleguide/tree/gh-pages/cpplint), [clang](http://clang.llvm.org/), [clangtidy](http://clang.llvm.org/extra/clang-tidy/) !!, [clang-format](https://clang.llvm.org/docs/ClangFormat.html), [flawfinder](https://www.dwheeler.com/flawfinder/), [gcc](https://gcc.gnu.org/) |
-| C++ (filetype cpp) | [clang](http://clang.llvm.org/), [clangcheck](http://clang.llvm.org/docs/ClangCheck.html) !!, [clangtidy](http://clang.llvm.org/extra/clang-tidy/) !!, [clang-format](https://clang.llvm.org/docs/ClangFormat.html), [cppcheck](http://cppcheck.sourceforge.net), [cpplint](https://github.com/google/styleguide/tree/gh-pages/cpplint) !!, [cquery](https://github.com/cquery-project/cquery), [flawfinder](https://www.dwheeler.com/flawfinder/), [gcc](https://gcc.gnu.org/) |
-| CUDA | [nvcc](http://docs.nvidia.com/cuda/cuda-compiler-driver-nvcc/index.html) |
-| C# | [mcs](http://www.mono-project.com/docs/about-mono/languages/csharp/) see:`help ale-cs-mcs` for details, [mcsc](http://www.mono-project.com/docs/about-mono/languages/csharp/) !! see:`help ale-cs-mcsc` for details and configuration|
-| Chef | [foodcritic](http://www.foodcritic.io/) |
-| Clojure | [joker](https://github.com/candid82/joker) |
-| CloudFormation | [cfn-python-lint](https://github.com/awslabs/cfn-python-lint) |
-| 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/), [prettier](https://github.com/prettier/prettier), [stylelint](https://github.com/stylelint/stylelint) |
-| Cucumber | [cucumber](https://cucumber.io/) |
-| Cython (pyrex filetype) | [cython](http://cython.org/) |
-| D | [dmd](https://dlang.org/dmd-linux.html) |
-| Dafny | [dafny](https://rise4fun.com/Dafny) !! |
-| Dart | [dartanalyzer](https://github.com/dart-lang/sdk/tree/master/pkg/analyzer_cli) !!, [language_server](https://github.com/natebosch/dart_language_server), [dartfmt](https://github.com/dart-lang/sdk/tree/master/utils/dartfmt) |
-| Dockerfile | [hadolint](https://github.com/hadolint/hadolint) |
-| Elixir | [credo](https://github.com/rrrene/credo), [dialyxir](https://github.com/jeremyjh/dialyxir), [dogma](https://github.com/lpil/dogma), [mix](https://hexdocs.pm/mix/Mix.html) !!|
-| Elm | [elm-format](https://github.com/avh4/elm-format), [elm-make](https://github.com/elm-lang/elm-make) |
-| Erb | [erb](https://apidock.com/ruby/ERB), [erubi](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) |
-| Fish | fish [-n flag](https://linux.die.net/man/1/fish)
-| Fortran | [gcc](https://gcc.gnu.org/) |
-| Fountain | [proselint](http://proselint.com/) |
-| FusionScript | [fusion-lint](https://github.com/RyanSquared/fusionscript) |
-| Git Commit Messages | [gitlint](https://github.com/jorisroovers/gitlint) |
-| GLSL | [glslang](https://github.com/KhronosGroup/glslang), [glslls](https://github.com/svenstaro/glsl-language-server) |
-| Go | [gofmt](https://golang.org/cmd/gofmt/), [goimports](https://godoc.org/golang.org/x/tools/cmd/goimports), [go vet](https://golang.org/cmd/vet/) !!, [golint](https://godoc.org/github.com/golang/lint), [gotype](https://godoc.org/golang.org/x/tools/cmd/gotype) !!, [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 | [eslint](http://eslint.org/), [gqlint](https://github.com/happylinks/gqlint), [prettier](https://github.com/prettier/prettier) |
-| Haml | [haml-lint](https://github.com/brigade/haml-lint) |
-| Handlebars | [ember-template-lint](https://github.com/rwjblue/ember-template-lint) |
-| Haskell | [brittany](https://github.com/lspitzner/brittany), [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), [hfmt](https://github.com/danstiner/hfmt) |
-| HTML | [alex](https://github.com/wooorm/alex) !!, [HTMLHint](http://htmlhint.com/), [proselint](http://proselint.com/), [tidy](http://www.html-tidy.org/), [write-good](https://github.com/btford/write-good) |
-| Idris | [idris](http://www.idris-lang.org/) |
-| Java | [checkstyle](http://checkstyle.sourceforge.net), [javac](http://www.oracle.com/technetwork/java/javase/downloads/index.html), [google-java-format](https://github.com/google/google-java-format), [PMD](https://pmd.github.io/) |
-| JavaScript | [eslint](http://eslint.org/), [flow](https://flowtype.org/), [jscs](http://jscs.info/), [jshint](http://jshint.com/), [prettier](https://github.com/prettier/prettier), [prettier-eslint](https://github.com/prettier/prettier-eslint-cli), [prettier-standard](https://github.com/sheerun/prettier-standard), [standard](http://standardjs.com/), [xo](https://github.com/sindresorhus/xo)
-| JSON | [fixjson](https://github.com/rhysd/fixjson), [jsonlint](http://zaa.ch/jsonlint/), [jq](https://stedolan.github.io/jq/), [prettier](https://github.com/prettier/prettier) |
-| Kotlin | [kotlinc](https://kotlinlang.org) !!, [ktlint](https://ktlint.github.io) !! see `:help ale-integration-kotlin` for configuration instructions |
-| LaTeX | [alex](https://github.com/wooorm/alex) !!, [chktex](http://www.nongnu.org/chktex/), [lacheck](https://www.ctan.org/pkg/lacheck), [proselint](http://proselint.com/), [redpen](http://redpen.cc/), [vale](https://github.com/ValeLint/vale), [write-good](https://github.com/btford/write-good) |
-| Less | [lessc](https://www.npmjs.com/package/less), [prettier](https://github.com/prettier/prettier), [stylelint](https://github.com/stylelint/stylelint) |
-| LLVM | [llc](https://llvm.org/docs/CommandGuide/llc.html) |
-| Lua | [luac](https://www.lua.org/manual/5.1/luac.html), [luacheck](https://github.com/mpeterv/luacheck) |
-| Mail | [alex](https://github.com/wooorm/alex) !!, [proselint](http://proselint.com/), [vale](https://github.com/ValeLint/vale) |
-| Make | [checkmake](https://github.com/mrtazz/checkmake) |
-| Markdown | [alex](https://github.com/wooorm/alex) !!, [markdownlint](https://github.com/DavidAnson/markdownlint) !!, [mdl](https://github.com/mivok/markdownlint), [prettier](https://github.com/prettier/prettier), [proselint](http://proselint.com/), [redpen](http://redpen.cc/), [remark-lint](https://github.com/wooorm/remark-lint) !!, [textlint](https://textlint.github.io/), [vale](https://github.com/ValeLint/vale), [write-good](https://github.com/btford/write-good) |
-| MATLAB | [mlint](https://www.mathworks.com/help/matlab/ref/mlint.html) |
-| Mercury | [mmc](http://mercurylang.org) !! |
-| NASM | [nasm](https://www.nasm.us/) !! |
-| Nim | [nim check](https://nim-lang.org/docs/nimc.html) !! |
-| nix | [nix-instantiate](http://nixos.org/nix/manual/#sec-nix-instantiate) |
-| nroff | [alex](https://github.com/wooorm/alex) !!, [proselint](http://proselint.com/), [write-good](https://github.com/btford/write-good)|
-| 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-ocaml-merlin` for configuration instructions, [ols](https://github.com/freebroccolo/ocaml-language-server) |
-| Perl | [perl -c](https://perl.org/), [perl-critic](https://metacpan.org/pod/Perl::Critic), [perltidy](https://metacpan.org/pod/distribution/Perl-Tidy/bin/perltidy) |
-| PHP | [hack](http://hacklang.org/), [hackfmt](https://github.com/facebook/flow/tree/master/hack/hackfmt), [langserver](https://github.com/felixfbecker/php-language-server), [phan](https://github.com/phan/phan) see `:help ale-php-phan` to instructions, [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), [php-cs-fixer](http://cs.sensiolabs.org/) |
-| PO | [alex](https://github.com/wooorm/alex) !!, [msgfmt](https://www.gnu.org/software/gettext/manual/html_node/msgfmt-Invocation.html), [proselint](http://proselint.com/), [write-good](https://github.com/btford/write-good) |
-| Pod | [alex](https://github.com/wooorm/alex) !!, [proselint](http://proselint.com/), [write-good](https://github.com/btford/write-good) |
-| Pony | [ponyc](https://github.com/ponylang/ponyc) |
-| proto | [protoc-gen-lint](https://github.com/ckaznocha/protoc-gen-lint) |
-| 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), [black](https://github.com/ambv/black), [flake8](http://flake8.pycqa.org/en/latest/), [isort](https://github.com/timothycrosley/isort), [mypy](http://mypy-lang.org/), [prospector](http://github.com/landscapeio/prospector), [pycodestyle](https://github.com/PyCQA/pycodestyle), [pyls](https://github.com/palantir/python-language-server), [pyre](https://github.com/facebook/pyre-check), [pylint](https://www.pylint.org/) !!, [yapf](https://github.com/google/yapf) |
-| QML | [qmlfmt](https://github.com/jesperhh/qmlfmt), [qmllint](https://github.com/qt/qtdeclarative/tree/5.11/tools/qmllint) |
-| R | [lintr](https://github.com/jimhester/lintr) |
-| ReasonML | [merlin](https://github.com/the-lambda-church/merlin) see `:help ale-reasonml-ols` for configuration instructions, [ols](https://github.com/freebroccolo/ocaml-language-server), [refmt](https://github.com/reasonml/reason-cli) |
-| reStructuredText | [alex](https://github.com/wooorm/alex) !!, [proselint](http://proselint.com/), [redpen](http://redpen.cc/), [rstcheck](https://github.com/myint/rstcheck), [vale](https://github.com/ValeLint/vale), [write-good](https://github.com/btford/write-good) |
-| Re:VIEW | [redpen](http://redpen.cc/) |
-| 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), [rufo](https://github.com/ruby-formatter/rufo) |
-| Rust |  cargo !! (see `:help ale-integration-rust` for configuration instructions), [rls](https://github.com/rust-lang-nursery/rls), [rustc](https://www.rust-lang.org/), [rustfmt](https://github.com/rust-lang-nursery/rustfmt) |
-| SASS | [sass-lint](https://www.npmjs.com/package/sass-lint), [stylelint](https://github.com/stylelint/stylelint) |
-| SCSS | [prettier](https://github.com/prettier/prettier), [sass-lint](https://www.npmjs.com/package/sass-lint), [scss-lint](https://github.com/brigade/scss-lint), [stylelint](https://github.com/stylelint/stylelint) |
-| Scala | [fsc](https://www.scala-lang.org/old/sites/default/files/linuxsoft_archives/docu/files/tools/fsc.html), [scalac](http://scala-lang.org), [scalafmt](https://scalameta.org/scalafmt/), [scalastyle](http://www.scalastyle.org) |
-| Slim | [slim-lint](https://github.com/sds/slim-lint) |
-| SML | [smlnj](http://www.smlnj.org/) |
-| Solidity | [solhint](https://github.com/protofire/solhint), [solium](https://github.com/duaraghav8/Solium) |
-| 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) !! |
-| Terraform | [tflint](https://github.com/wata727/tflint) |
-| Texinfo | [alex](https://github.com/wooorm/alex) !!, [proselint](http://proselint.com/), [write-good](https://github.com/btford/write-good)|
-| Text^ | [alex](https://github.com/wooorm/alex) !!, [proselint](http://proselint.com/), [redpen](http://redpen.cc/), [textlint](https://textlint.github.io/), [vale](https://github.com/ValeLint/vale), [write-good](https://github.com/btford/write-good) |
-| Thrift | [thrift](http://thrift.apache.org/) |
-| TypeScript | [eslint](http://eslint.org/), [prettier](https://github.com/prettier/prettier), [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^ | [alex](https://github.com/wooorm/alex) !!, [proselint](http://proselint.com/), [write-good](https://github.com/btford/write-good) |
-| Vue | [prettier](https://github.com/prettier/prettier) |
-| XHTML | [alex](https://github.com/wooorm/alex) !!, [proselint](http://proselint.com/), [write-good](https://github.com/btford/write-good) |
-| XML | [xmllint](http://xmlsoft.org/xmllint.html) |
-| YAML | [swaglint](https://github.com/byCedric/swaglint), [yamllint](https://yamllint.readthedocs.io/) |
+ALE supports a wide variety of languages and tools. See the
+[full list](supported-tools.md) in the
+[Supported Languages and Tools](supported-tools.md) page.
 
 <a name="usage"></a>
 
@@ -208,7 +101,7 @@ 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.
+ale-integration-options` for options specified to particular linters.
 
 <a name="usage-fixing"></a>
 
@@ -228,12 +121,18 @@ let b:ale_fixers = ['prettier', 'eslint']
 let b:ale_fixers = {'javascript': ['prettier', 'eslint']}
 ```
 
-You can also configure your fixers from vimrc using `g:ale_fixers`, before
-or after ALE has been loaded.
+You can also configure your fixers from vimrc using `g:ale_fixers`, before or
+after ALE has been loaded.
+
+A `*` in place of the filetype will apply a List of fixers to all files which
+do not match some filetype in the Dictionary.
+
+Note that using a plain List for `g:ale_fixers` is not supported.
 
 ```vim
 " In ~/.vim/vimrc, or somewhere similar.
 let g:ale_fixers = {
+\   '*': ['remove_trailing_lines', 'trim_whitespace'],
 \   'javascript': ['eslint'],
 \}
 ```
@@ -262,6 +161,7 @@ Protocol linters, or from `tsserver` for TypeScript.
 
 ```vim
 " Enable completion where available.
+" This setting must be set before ALE is loaded.
 let g:ale_completion_enabled = 1
 ```
 
@@ -295,11 +195,24 @@ ALE supports "hover" information for printing brief information about symbols at
 the cursor taken from Language Server Protocol linters and `tsserver` with the
 `ALEHover` command.
 
-On vim/gvim with `balloon` support you can see the information in a tooltip
-that appears under the mouse when you mouseover a symbol.
+The information can be displayed in a `balloon` tooltip in Vim or GVim by
+hovering your mouse over symbols. Mouse hovering is enabled by default in GVim,
+and needs to be configured for Vim 8.1+ in terminals.
 
 See `:help ale-hover` for more information.
 
+<a name="usage-symbol-search"></a>
+
+### 2.vii Symbol Search
+
+ALE supports searching for workspace symbols via Language Server Protocol
+linters with the `ALESymbolSearch` command.
+
+Search queries can be performed to find functions, types, and more which are
+similar to a given query string.
+
+See `:help ale-symbol-search` for more information.
+
 <a name="installation"></a>
 
 ## 3. Installation
@@ -383,6 +296,18 @@ Plugin 'w0rp/ale'
 
 See the Vundle documentation for more information.
 
+<a name="installation-with-vim-plug"></a>
+
+### 3.iiii. Installation with Vim-Plug
+
+You can install this plugin using [Vim-Plug](https://github.com/junegunn/vim-plug)
+by adding the GitHub path for this repository to your `~/.vimrc`
+and running `:PlugInstall`.
+
+```vim
+Plug 'w0rp/ale'
+```
+
 <a name="contributing"></a>
 
 ## 4. Contributing
@@ -524,8 +449,16 @@ 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`.
+function without adding any other plugins. ALE provides some functions to
+assist in this endeavour, including:
+
+* `ale#statusline#Count`: Which returns the number of problems found by ALE
+  for a specified buffer.
+* `ale#statusline#FirstProblem`: Which returns a dictionary containing the
+  full loclist details of the first problem of a specified type found by ALE
+  in a buffer. (e.g. The first style warning in the current buffer.)
+  This can be useful for displaying more detailed information such as the
+  line number of the first problem in a file.
 
 Say you want to display all errors as one figure, and all non-errors as another
 figure. You can do the following:
@@ -547,7 +480,8 @@ endfunction
 set statusline=%{LinterStatus()}
 ```
 
-See `:help ale#statusline#Count()` for more information.
+See `:help ale#statusline#Count()` or `:help ale#statusline#FirstProblem()`
+for more information.
 
 <a name="faq-lightline"></a>
 
@@ -569,7 +503,7 @@ There are 3 global options that allow customizing the echoed message.
     * `%...code...%` is an optional error code, and most characters can be
       written between the `%` characters.
     * `%linter%` is the linter name
-    * `%severity` is the severity type
+    * `%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.
 
@@ -701,16 +635,16 @@ options in a jsx.vim ftplugin file.
 
 ```vim
 " In ~/.vim/ftplugin/jsx.vim, or somewhere similar.
+let b:ale_linter_aliases = ['css', 'javascript']
 let b:ale_linters = ['stylelint', 'eslint']
-let b:ale_linter_aliases = ['css']
 ```
 
 Or if you want, you can configure the linters from your vimrc file.
 
 ```vim
 " In ~/.vim/vimrc, or somewhere similar.
+let g:ale_linter_aliases = {'jsx': ['css', 'javascript']}
 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
@@ -718,9 +652,40 @@ 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-vue-eslint"></a>
+
+### 5.xiii. How can I check Vue files with ESLint?
+
+To check Vue files with ESLint, your ESLint project configuration file must be
+configured to use the [Vue plugin](https://github.com/vuejs/eslint-plugin-vue).
+After that, you need to configure ALE so it will run the JavaScript ESLint
+linter on your files. The settings you need are similar to the settings needed
+for checking JSX code with both stylelint and ESLint, in the previous section.
+
+```vim
+" In ~/.vim/ftplugin/vue.vim, or somewhere similar.
+
+" Run both javascript and vue linters for vue files.
+let b:ale_linter_aliases = ['javascript', 'vue']
+" Select the eslint and vls linters.
+let b:ale_linters = ['eslint', 'vls']
+```
+
+Run `:ALEInfo` to see which linters are available after telling ALE to run
+JavaScript linters on Vue files. Not all linters support checking Vue files.
+
+If you don't want to configure your linters in ftplugin files for some reason,
+you can configure them from your vimrc file instead.
+
+```vim
+" In ~/.vim/vimrc, or somewhere similar.
+let g:ale_linter_aliases = {'vue': ['vue', 'javascript']}
+let g:ale_linters = {'vue': ['eslint', 'vls']}
+```
+
 <a name="faq-my-battery-is-sad"></a>
 
-### 5.xiii. Will this plugin eat all of my laptop battery power?
+### 5.xiv. 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
@@ -745,7 +710,7 @@ including the option `g:ale_lint_on_enter`, and you can run ALE manually with
 
 <a name="faq-c-configuration"></a>
 
-### 5.xiv. How can I configure my C or C++ project?
+### 5.xv. How can I configure my C or C++ project?
 
 The structure of C and C++ projects varies wildly from project to project, with
 many different build tools being used for building them, and many different
@@ -771,7 +736,7 @@ used for executing local vimrc files which can be shared in your project.
 
 <a name="faq-buffer-configuration"></a>
 
-### 5.xv. How can I configure ALE differently for different buffers?
+### 5.xvi. How can I configure ALE differently for different buffers?
 
 ALE offers various ways to configure which linters or fixers are run, and
 other settings. For the majority of ALE's settings, they can either be
@@ -807,7 +772,7 @@ Buffer-local variables for settings always override the global settings.
 
 <a name="faq-list-window-height"></a>
 
-### 5.xvi. How can I configure the height of the list in which ALE displays errors?
+### 5.xvii. How can I configure the height of the list in which ALE displays errors?
 
 To set a default height for the error list, use the `g:ale_list_window_size` variable.
 
@@ -815,3 +780,13 @@ To set a default height for the error list, use the `g:ale_list_window_size` var
 " Show 5 lines of errors (default: 10)
 let g:ale_list_window_size = 5
 ```
+
+<a name="faq-get-info"></a>
+
+### 5.xviii. How can I see what ALE has configured for the current file?
+
+Run the following to see what is currently configured:
+
+```vim
+:ALEInfo
+```

ale_linters/ada/gcc.vim

@@ -0,0 +1,54 @@
+" Author: Martino Pilia <martino.pilia@gmail.com>
+" Description: Lint Ada files with GCC
+
+call ale#Set('ada_gcc_executable', 'gcc')
+
+" -gnatwa: activate most optional warnings
+" -gnatq: try semantic analysis even if syntax errors have been found
+call ale#Set('ada_gcc_options', '-gnatwa -gnatq')
+
+function! ale_linters#ada#gcc#GetCommand(buffer) abort
+    " Build a suitable output file name. The output file is specified because
+    " the .ali file may be created even if no code generation is attempted.
+    " The output file name must match the source file name (except for the
+    " extension), so here we cannot use the null file as output.
+    let l:tmp_dir = fnamemodify(ale#command#CreateDirectory(a:buffer), ':p')
+    let l:out_file = l:tmp_dir . fnamemodify(bufname(a:buffer), ':t:r') . '.o'
+
+    " -gnatc: Check syntax and semantics only (no code generation attempted)
+    return '%e -x ada -c -gnatc'
+    \   . ' -o ' . ale#Escape(l:out_file)
+    \   . ' -I ' . ale#Escape(fnamemodify(bufname(a:buffer), ':p:h'))
+    \   . ale#Pad(ale#Var(a:buffer, 'ada_gcc_options'))
+    \   . ' %t'
+endfunction
+
+" For the message format please refer to:
+"   https://gcc.gnu.org/onlinedocs/gnat_ugn/Output-and-Error-Message-Control.html
+"   https://gcc.gnu.org/onlinedocs/gnat_ugn/Warning-Message-Control.html
+function! ale_linters#ada#gcc#Handle(buffer, lines) abort
+    " Error format: <filename>:<lnum>:<col>: <text>
+    " Warning format: <filename>:<lnum>:<col>: warning: <text>
+    let l:re = '\v(.+):([0-9]+):([0-9]+):\s+(warning:)?\s*(.+)\s*'
+    let l:output = []
+
+    for l:match in ale#util#GetMatches(a:lines, l:re)
+        call add(l:output, {
+        \   'bufnr': a:buffer,
+        \   'lnum': str2nr(l:match[2]),
+        \   'col': str2nr(l:match[3]),
+        \   'type': l:match[4] is# 'warning:' ? 'W' : 'E',
+        \   'text': l:match[5],
+        \})
+    endfor
+
+    return l:output
+endfunction
+
+call ale#linter#Define('ada', {
+\   'name': 'gcc',
+\   'output_stream': 'stderr',
+\   'executable': {b -> ale#Var(b, 'ada_gcc_executable')},
+\   'command': function('ale_linters#ada#gcc#GetCommand'),
+\   'callback': 'ale_linters#ada#gcc#Handle',
+\})

ale_linters/ansible/ansible_lint.vim

@@ -1,6 +1,12 @@
 " Author: Bjorn Neergaard <bjorn@neersighted.com>
 " Description: ansible-lint for ansible-yaml files
 
+call ale#Set('ansible_ansible_lint_executable', 'ansible-lint')
+
+function! ale_linters#ansible#ansible_lint#GetExecutable(buffer) abort
+    return ale#Var(a:buffer, 'ansible_ansible_lint_executable')
+endfunction
+
 function! ale_linters#ansible#ansible_lint#Handle(buffer, lines) abort
     for l:line in a:lines[:10]
         if match(l:line, '^Traceback') >= 0
@@ -42,8 +48,9 @@ function! ale_linters#ansible#ansible_lint#Handle(buffer, lines) abort
 endfunction
 
 call ale#linter#Define('ansible', {
-\   'name': 'ansible',
-\   'executable': 'ansible',
-\   'command': 'ansible-lint -p %t',
+\   'name': 'ansible_lint',
+\   'aliases': ['ansible', 'ansible-lint'],
+\   'executable': function('ale_linters#ansible#ansible_lint#GetExecutable'),
+\   'command': '%e -p %t',
 \   'callback': 'ale_linters#ansible#ansible_lint#Handle',
 \})

ale_linters/apiblueprint/drafter.vim

@@ -16,10 +16,12 @@ function! ale_linters#apiblueprint#drafter#HandleErrors(buffer, lines) abort
         \   'lnum': l:match[3] + 0,
         \   'col': l:match[4] + 0,
         \}
+
         if l:match[5] isnot# ''
             let l:item.end_lnum = l:match[6] + 0
             let l:item.end_col = l:match[7] + 0
         endif
+
         call add(l:output, l:item)
     endfor
 
@@ -31,6 +33,6 @@ call ale#linter#Define('apiblueprint', {
 \   'name': 'drafter',
 \   'output_stream': 'stderr',
 \   'executable': 'drafter',
-\   'command': 'drafter --use-line-num --validate %t',
+\   'command': 'drafter --use-line-num --validate',
 \   'callback': 'ale_linters#apiblueprint#drafter#HandleErrors',
 \})

ale_linters/asciidoc/alex.vim

@@ -1,11 +1,4 @@
 " Author: Johannes Wienke <languitar@semipol.de>
 " Description: alex for asciidoc files
 
-call ale#linter#Define('help', {
-\   'name': 'alex',
-\   'executable': 'alex',
-\   'command': 'alex %s -t',
-\   'output_stream': 'stderr',
-\   'callback': 'ale#handlers#alex#Handle',
-\   'lint_file': 1,
-\})
+call ale#handlers#alex#DefineLinter('asciidoc', '--text')

ale_linters/asciidoc/textlint.vim

@@ -0,0 +1,9 @@
+" Author: TANIGUCHI Masaya <ta2gch@gmail.com>
+" Description: textlint for AsciiDoc files
+
+call ale#linter#Define('asciidoc', {
+\   'name': 'textlint',
+\   'executable': function('ale#handlers#textlint#GetExecutable'),
+\   'command': function('ale#handlers#textlint#GetCommand'),
+\   'callback': 'ale#handlers#textlint#HandleTextlintOutput',
+\})

ale_linters/asciidoc/vale.vim

@@ -0,0 +1,9 @@
+" Author: Jeff Kreeftmeijer https://github.com/jeffkreeftmeijer
+" Description: vale for AsciiDoc files
+
+call ale#linter#Define('asciidoc', {
+\   'name': 'vale',
+\   'executable': 'vale',
+\   'command': 'vale --output=line %t',
+\   'callback': 'ale#handlers#unix#HandleAsWarning',
+\})

ale_linters/asciidoc/write-good.vim

@@ -1,9 +0,0 @@
-" Author: Sumner Evans <sumner.evans98@gmail.com>
-" Description: write-good for AsciiDoc files
-
-call ale#linter#Define('asciidoc', {
-\   'name': 'write-good',
-\   'executable_callback': 'ale#handlers#writegood#GetExecutable',
-\   'command_callback': 'ale#handlers#writegood#GetCommand',
-\   'callback': 'ale#handlers#writegood#Handle',
-\})

ale_linters/asciidoc/writegood.vim

@@ -0,0 +1,4 @@
+" Author: Sumner Evans <sumner.evans98@gmail.com>
+" Description: write-good for AsciiDoc files
+
+call ale#handlers#writegood#DefineLinter('asciidoc')

ale_linters/asm/gcc.vim

@@ -4,15 +4,10 @@
 call ale#Set('asm_gcc_executable', 'gcc')
 call ale#Set('asm_gcc_options', '-Wall')
 
-function! ale_linters#asm#gcc#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'asm_gcc_executable')
-endfunction
-
 function! ale_linters#asm#gcc#GetCommand(buffer) abort
-    return ale#Escape(ale_linters#asm#gcc#GetExecutable(a:buffer))
-    \    . ' -x assembler -fsyntax-only '
-    \    . '-iquote ' . ale#Escape(fnamemodify(bufname(a:buffer), ':p:h'))
-    \    . ' ' . ale#Var(a:buffer, 'asm_gcc_options') . ' -'
+    return '%e -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
@@ -33,7 +28,7 @@ endfunction
 call ale#linter#Define('asm', {
 \    'name': 'gcc',
 \    'output_stream': 'stderr',
-\    'executable_callback': 'ale_linters#asm#gcc#GetExecutable',
-\    'command_callback': 'ale_linters#asm#gcc#GetCommand',
+\    'executable': {b -> ale#Var(b, 'asm_gcc_executable')},
+\    'command': function('ale_linters#asm#gcc#GetCommand'),
 \    'callback': 'ale_linters#asm#gcc#Handle',
 \})

ale_linters/awk/gawk.vim

@@ -1,30 +1,22 @@
 " 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
+call ale#Set('awk_gawk_executable', 'gawk')
+call ale#Set('awk_gawk_options', '')
 
 function! ale_linters#awk#gawk#GetCommand(buffer) abort
     " note the --source 'BEGIN ...' is to prevent
     " gawk from attempting to execute the body of the script
     " it is linting.
-    return ale_linters#awk#gawk#GetExecutable(a:buffer)
-    \   . " --source 'BEGIN { exit } END { exit 1 }'"
-    \   . ' ' . ale#Var(a:buffer, 'awk_gawk_options')
-    \   . ' ' . '-f %t --lint /dev/null'
+    return '%e --source ' . ale#Escape('BEGIN { exit } END { exit 1 }')
+    \   .  ale#Pad(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',
+\   'executable': {b -> ale#Var(b, 'awk_gawk_executable')},
+\   'command': function('ale_linters#awk#gawk#GetCommand'),
 \   'callback': 'ale#handlers#gawk#HandleGawkFormat',
 \   'output_stream': 'both'
 \})

ale_linters/bib/bibclean.vim

@@ -0,0 +1,75 @@
+" Author: Horacio Sanson - https://github.com/hsanson
+" Description: Support for bibclean linter for BibTeX files.
+
+call ale#Set('bib_bibclean_executable', 'bibclean')
+
+function! ale_linters#bib#bibclean#GetCommand(buffer) abort
+    let l:executable = ale#Var(a:buffer, 'bib_bibclean_executable')
+
+    return ale#Escape(l:executable) . ' -file-position '
+endfunction
+
+function! ale_linters#bib#bibclean#get_type(str) abort
+    if a:str is# '??'
+        return 'E'
+    else
+        return 'W'
+    endif
+endfunction
+
+function! ale_linters#bib#bibclean#match_msg(line) abort
+    return matchlist(a:line, '^\(.*\) "stdin", line \(.*\): \(.*\)$')
+endfunction
+
+function! ale_linters#bib#bibclean#match_entry(line) abort
+    return matchlist(a:line, 'Entry   input byte=.* line=\(.*\) column=\(.*\) output .*$')
+endfunction
+
+function! ale_linters#bib#bibclean#match_value(line) abort
+    return matchlist(a:line, 'Value   input byte=.* line=\(.*\) column=\(.*\) output .*$')
+endfunction
+
+function! ale_linters#bib#bibclean#Handle(buffer, lines) abort
+    let l:output = []
+
+    let l:type = 'E'
+    let l:msg  = ''
+
+    for l:line in a:lines
+        if empty(l:msg)
+            let l:mlist = ale_linters#bib#bibclean#match_msg(l:line)
+
+            if !empty(l:mlist)
+                let l:msg = l:mlist[3]
+                let l:type = ale_linters#bib#bibclean#get_type(l:mlist[1])
+            endif
+        else
+            if l:type is# 'E'
+                let l:mlist = ale_linters#bib#bibclean#match_entry(l:line)
+            else
+                let l:mlist = ale_linters#bib#bibclean#match_value(l:line)
+            endif
+
+            if !empty(l:mlist)
+                call add(l:output, {
+                \ 'lnum': l:mlist[1],
+                \ 'col': l:mlist[2],
+                \ 'text': l:msg,
+                \ 'type': l:type
+                \})
+
+                let l:msg = ''
+            endif
+        endif
+    endfor
+
+    return l:output
+endfunction
+
+call ale#linter#Define('bib', {
+\   'name': 'bibclean',
+\   'executable': {b -> ale#Var(b, 'bib_bibclean_executable')},
+\   'command': function('ale_linters#bib#bibclean#GetCommand'),
+\   'output_stream': 'stderr',
+\   'callback': 'ale_linters#bib#bibclean#Handle',
+\})

ale_linters/c/ccls.vim

@@ -0,0 +1,14 @@
+" Author: Ye Jingchen <ye.jingchen@gmail.com>, Ben Falconer <ben@falconers.me.uk>, jtalowell <jtalowell@protonmail.com>
+" Description: A language server for C
+
+call ale#Set('c_ccls_executable', 'ccls')
+call ale#Set('c_ccls_init_options', {})
+
+call ale#linter#Define('c', {
+\   'name': 'ccls',
+\   'lsp': 'stdio',
+\   'executable': {b -> ale#Var(b, 'c_ccls_executable')},
+\   'command': '%e',
+\   'project_root': function('ale#handlers#ccls#GetProjectRoot'),
+\   'initialization_options': {b -> ale#Var(b, 'c_ccls_init_options')},
+\})

ale_linters/c/clang.vim

@@ -4,29 +4,21 @@
 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, output) abort
     let l:cflags = ale#c#GetCFlags(a:buffer, a:output)
 
     " -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')) . ' '
-    \   . l:cflags
-    \   . ale#Var(a:buffer, 'c_clang_options') . ' -'
+    return '%e -S -x c -fsyntax-only'
+    \   . ' -iquote ' . ale#Escape(fnamemodify(bufname(a:buffer), ':p:h'))
+    \   . ale#Pad(l:cflags)
+    \   . ale#Pad(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_chain': [
-\       {'callback': 'ale#c#GetMakeCommand', 'output_stream': 'stdout'},
-\       {'callback': 'ale_linters#c#clang#GetCommand'}
-\   ],
-\   'callback': 'ale#handlers#gcc#HandleGCCFormat',
+\   'executable': {b -> ale#Var(b, 'c_clang_executable')},
+\   'command': {b -> ale#c#RunMakeCommand(b, function('ale_linters#c#clang#GetCommand'))},
+\   'callback': 'ale#handlers#gcc#HandleGCCFormatWithIncludes',
 \})

ale_linters/c/clangd.vim

@@ -0,0 +1,23 @@
+" Author: Andrey Melentyev <andrey.melentyev@protonmail.com>
+" Description: Clangd language server
+
+call ale#Set('c_clangd_executable', 'clangd')
+call ale#Set('c_clangd_options', '')
+
+function! ale_linters#c#clangd#GetProjectRoot(buffer) abort
+    let l:project_root = ale#path#FindNearestFile(a:buffer, 'compile_commands.json')
+
+    return !empty(l:project_root) ? fnamemodify(l:project_root, ':h') : ''
+endfunction
+
+function! ale_linters#c#clangd#GetCommand(buffer) abort
+    return '%e' . ale#Pad(ale#Var(a:buffer, 'c_clangd_options'))
+endfunction
+
+call ale#linter#Define('c', {
+\   'name': 'clangd',
+\   'lsp': 'stdio',
+\   'executable': {b -> ale#Var(b, 'c_clangd_executable')},
+\   'command': function('ale_linters#c#clangd#GetCommand'),
+\   'project_root': function('ale_linters#c#clangd#GetProjectRoot'),
+\})

ale_linters/c/clangtidy.vim

@@ -10,44 +10,22 @@ call ale#Set('c_clangtidy_executable', 'clang-tidy')
 " Consult the check list in clang-tidy's documentation:
 " http://clang.llvm.org/extra/clang-tidy/checks/list.html
 
-call ale#Set('c_clangtidy_checks', ['*'])
+call ale#Set('c_clangtidy_checks', [])
 " Set this option to manually set some options for clang-tidy.
 " This will disable compile_commands.json detection.
 call ale#Set('c_clangtidy_options', '')
 call ale#Set('c_build_dir', '')
 
-function! ale_linters#c#clangtidy#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'c_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#c#clangtidy#GetCommand(buffer) abort
     let l:checks = join(ale#Var(a:buffer, 'c_clangtidy_checks'), ',')
-    let l:build_dir = s:GetBuildDirectory(a:buffer)
+    let l:build_dir = ale#c#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, 'c_clangtidy_options')
     \   : ''
 
-    return ale#Escape(ale_linters#c#clangtidy#GetExecutable(a:buffer))
+    return '%e'
     \   . (!empty(l:checks) ? ' -checks=' . ale#Escape(l:checks) : '')
     \   . ' %s'
     \   . (!empty(l:build_dir) ? ' -p ' . ale#Escape(l:build_dir) : '')
@@ -57,8 +35,8 @@ endfunction
 call ale#linter#Define('c', {
 \   'name': 'clangtidy',
 \   'output_stream': 'stdout',
-\   'executable_callback': 'ale_linters#c#clangtidy#GetExecutable',
-\   'command_callback': 'ale_linters#c#clangtidy#GetCommand',
+\   'executable': {b -> ale#Var(b, 'c_clangtidy_executable')},
+\   'command': function('ale_linters#c#clangtidy#GetCommand'),
 \   'callback': 'ale#handlers#gcc#HandleGCCFormat',
 \   'lint_file': 1,
 \})

ale_linters/c/cppcheck.vim

@@ -4,10 +4,6 @@
 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.
     "
@@ -23,8 +19,7 @@ function! ale_linters#c#cppcheck#GetCommand(buffer) abort
     \   : ''
 
     return l:cd_command
-    \   . ale#Escape(ale_linters#c#cppcheck#GetExecutable(a:buffer))
-    \   . ' -q --language=c '
+    \   . '%e -q --language=c '
     \   . l:compile_commands_option
     \   . ale#Var(a:buffer, 'c_cppcheck_options')
     \   . ' %t'
@@ -33,7 +28,7 @@ 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',
+\   'executable': {b -> ale#Var(b, 'c_cppcheck_executable')},
+\   'command': function('ale_linters#c#cppcheck#GetCommand'),
 \   'callback': 'ale#handlers#cppcheck#HandleCppCheckFormat',
 \})

ale_linters/c/cquery.vim

@@ -0,0 +1,28 @@
+" Author: Ben Falconer <ben@falconers.me.uk>, jtalowell <jtalowell@protonmail.com>
+" Description: A language server for C
+
+call ale#Set('c_cquery_executable', 'cquery')
+call ale#Set('c_cquery_cache_directory', expand('~/.cache/cquery'))
+
+function! ale_linters#c#cquery#GetProjectRoot(buffer) abort
+    let l:project_root = ale#path#FindNearestFile(a:buffer, 'compile_commands.json')
+
+    if empty(l:project_root)
+        let l:project_root = ale#path#FindNearestFile(a:buffer, '.cquery')
+    endif
+
+    return !empty(l:project_root) ? fnamemodify(l:project_root, ':h') : ''
+endfunction
+
+function! ale_linters#c#cquery#GetInitializationOptions(buffer) abort
+    return {'cacheDirectory': ale#Var(a:buffer, 'c_cquery_cache_directory')}
+endfunction
+
+call ale#linter#Define('c', {
+\   'name': 'cquery',
+\   'lsp': 'stdio',
+\   'executable': {b -> ale#Var(b, 'c_cquery_executable')},
+\   'command': '%e',
+\   'project_root': function('ale_linters#c#cquery#GetProjectRoot'),
+\   'initialization_options': function('ale_linters#c#cquery#GetInitializationOptions'),
+\})

ale_linters/c/flawfinder.vim

@@ -6,26 +6,20 @@ call ale#Set('c_flawfinder_options', '')
 call ale#Set('c_flawfinder_minlevel', 1)
 call ale#Set('c_flawfinder_error_severity', 6)
 
-function! ale_linters#c#flawfinder#GetExecutable(buffer) abort
-   return ale#Var(a:buffer, 'c_flawfinder_executable')
-endfunction
-
 function! ale_linters#c#flawfinder#GetCommand(buffer) abort
+    " Set the minimum vulnerability level for flawfinder to bother with
+    let l:minlevel = ' --minlevel=' . ale#Var(a:buffer, 'c_flawfinder_minlevel')
 
-   " Set the minimum vulnerability level for flawfinder to bother with
-   let l:minlevel = ' --minlevel=' . ale#Var(a:buffer, 'c_flawfinder_minlevel')
-
-   return ale#Escape(ale_linters#c#flawfinder#GetExecutable(a:buffer))
-   \  . ' -CDQS'
-   \  . ale#Var(a:buffer, 'c_flawfinder_options')
-   \  . l:minlevel
-   \  . ' %t'
+    return '%e -CDQS'
+    \  . ale#Pad(ale#Var(a:buffer, 'c_flawfinder_options'))
+    \  . l:minlevel
+    \  . ' %t'
 endfunction
 
 call ale#linter#Define('c', {
 \  'name': 'flawfinder',
 \  'output_stream': 'stdout',
-\  'executable_callback': 'ale_linters#c#flawfinder#GetExecutable',
-\  'command_callback': 'ale_linters#c#flawfinder#GetCommand',
+\  'executable': {b -> ale#Var(b, 'c_flawfinder_executable')},
+\  'command': function('ale_linters#c#flawfinder#GetCommand'),
 \  'callback': 'ale#handlers#flawfinder#HandleFlawfinderFormat',
 \})

ale_linters/c/gcc.vim

@@ -4,29 +4,21 @@
 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, output) abort
     let l:cflags = ale#c#GetCFlags(a:buffer, a:output)
 
     " -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')) . ' '
-    \   . l:cflags
-    \   . ale#Var(a:buffer, 'c_gcc_options') . ' -'
+    return '%e -S -x c -fsyntax-only'
+    \   . ' -iquote ' . ale#Escape(fnamemodify(bufname(a:buffer), ':p:h'))
+    \   . ale#Pad(l:cflags)
+    \   . ale#Pad(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_chain': [
-\       {'callback': 'ale#c#GetMakeCommand', 'output_stream': 'stdout'},
-\       {'callback': 'ale_linters#c#gcc#GetCommand'}
-\   ],
-\   'callback': 'ale#handlers#gcc#HandleGCCFormat',
+\   'executable': {b -> ale#Var(b, 'c_gcc_executable')},
+\   'command': {b -> ale#c#RunMakeCommand(b, function('ale_linters#c#gcc#GetCommand'))},
+\   'callback': 'ale#handlers#gcc#HandleGCCFormatWithIncludes',
 \})

ale_linters/chef/foodcritic.vim

@@ -6,17 +6,10 @@
 call ale#Set('chef_foodcritic_executable', 'foodcritic')
 call ale#Set('chef_foodcritic_options', '')
 
-function! ale_linters#chef#foodcritic#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'chef_foodcritic_executable')
-endfunction
-
 function! ale_linters#chef#foodcritic#GetCommand(buffer) abort
-    let l:executable = ale_linters#chef#foodcritic#GetExecutable(a:buffer)
     let l:options = ale#Var(a:buffer, 'chef_foodcritic_options')
 
-    return ale#Escape(l:executable)
-    \   . (!empty(l:options) ? ' ' . escape(l:options, '~') : '')
-    \   . ' %s'
+    return '%e' . ale#Pad(escape(l:options, '~')) . ' %s'
 endfunction
 
 function! ale_linters#chef#foodcritic#Handle(buffer, lines) abort
@@ -41,8 +34,8 @@ endfunction
 
 call ale#linter#Define('chef', {
 \   'name': 'foodcritic',
-\   'executable_callback': 'ale_linters#chef#foodcritic#GetExecutable',
-\   'command_callback': 'ale_linters#chef#foodcritic#GetCommand',
+\   'executable': {b -> ale#Var(b, 'chef_foodcritic_executable')},
+\   'command': function('ale_linters#chef#foodcritic#GetCommand'),
 \   'callback': 'ale_linters#chef#foodcritic#Handle',
 \   'lint_file': 1,
 \})

ale_linters/clojure/joker.vim

@@ -9,9 +9,11 @@ function! ale_linters#clojure#joker#HandleJokerFormat(buffer, lines) abort
 
     for l:match in ale#util#GetMatches(a:lines, l:pattern)
         let l:type = 'E'
+
         if l:match[4] is? 'Parse warning'
-          let l:type = 'W'
+            let l:type = 'W'
         endif
+
         call add(l:output, {
         \   'lnum': l:match[1] + 0,
         \   'col': l:match[2] + 0,
@@ -27,6 +29,6 @@ call ale#linter#Define('clojure', {
 \   'name': 'joker',
 \   'output_stream': 'stderr',
 \   'executable': 'joker',
-\   'command': 'joker --lint %t',
+\   'command': 'joker --working-dir %s --lint %t',
 \   'callback': 'ale_linters#clojure#joker#HandleJokerFormat',
 \})

ale_linters/cmake/cmakelint.vim

@@ -18,7 +18,7 @@ endfunction
 
 call ale#linter#Define('cmake', {
 \   'name': 'cmakelint',
-\   'executable_callback': 'ale_linters#cmake#cmakelint#Executable',
-\   'command_callback': 'ale_linters#cmake#cmakelint#Command',
+\   'executable': function('ale_linters#cmake#cmakelint#Executable'),
+\   'command': function('ale_linters#cmake#cmakelint#Command'),
 \   'callback': 'ale#handlers#unix#HandleAsWarning',
 \})

ale_linters/coffee/coffee.vim

@@ -16,8 +16,8 @@ endfunction
 
 call ale#linter#Define('coffee', {
 \   'name': 'coffee',
-\   'executable_callback': 'ale_linters#coffee#coffee#GetExecutable',
-\   'command_callback': 'ale_linters#coffee#coffee#GetCommand',
+\   'executable': function('ale_linters#coffee#coffee#GetExecutable'),
+\   'command': function('ale_linters#coffee#coffee#GetCommand'),
 \   'output_stream': 'stderr',
 \   'callback': 'ale#handlers#gcc#HandleGCCFormat',
 \})

ale_linters/coffee/coffeelint.vim

@@ -37,7 +37,7 @@ endfunction
 
 call ale#linter#Define('coffee', {
 \   'name': 'coffeelint',
-\   'executable_callback': 'ale_linters#coffee#coffeelint#GetExecutable',
-\   'command_callback': 'ale_linters#coffee#coffeelint#GetCommand',
+\   'executable': function('ale_linters#coffee#coffeelint#GetExecutable'),
+\   'command': function('ale_linters#coffee#coffeelint#GetCommand'),
 \   'callback': 'ale_linters#coffee#coffeelint#Handle',
 \})

ale_linters/cpp/ccls.vim

@@ -0,0 +1,14 @@
+" Author: Ye Jingchen <ye.jingchen@gmail.com>, Ben Falconer <ben@falconers.me.uk>, jtalowell <jtalowell@protonmail.com>
+" Description: A language server for C++
+
+call ale#Set('cpp_ccls_executable', 'ccls')
+call ale#Set('cpp_ccls_init_options', {})
+
+call ale#linter#Define('cpp', {
+\   'name': 'ccls',
+\   'lsp': 'stdio',
+\   'executable': {b -> ale#Var(b, 'cpp_ccls_executable')},
+\   'command': '%e',
+\   'project_root': function('ale#handlers#ccls#GetProjectRoot'),
+\   'initialization_options': {b -> ale#Var(b, 'cpp_ccls_init_options')},
+\})

ale_linters/cpp/clang.vim

@@ -4,29 +4,21 @@
 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, output) abort
     let l:cflags = ale#c#GetCFlags(a:buffer, a:output)
 
     " -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')) . ' '
-    \   . l:cflags
-    \   . ale#Var(a:buffer, 'cpp_clang_options') . ' -'
+    return '%e -S -x c++ -fsyntax-only'
+    \   . ' -iquote ' . ale#Escape(fnamemodify(bufname(a:buffer), ':p:h'))
+    \   . ale#Pad(l:cflags)
+    \   . ale#Pad(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_chain': [
-\       {'callback': 'ale#c#GetMakeCommand', 'output_stream': 'stdout'},
-\       {'callback': 'ale_linters#cpp#clang#GetCommand'},
-\   ],
-\   'callback': 'ale#handlers#gcc#HandleGCCFormat',
+\   'executable': {b -> ale#Var(b, 'cpp_clang_executable')},
+\   'command': {b -> ale#c#RunMakeCommand(b, function('ale_linters#cpp#clang#GetCommand'))},
+\   'callback': 'ale#handlers#gcc#HandleGCCFormatWithIncludes',
 \})

ale_linters/cpp/clangcheck.vim

@@ -5,10 +5,6 @@ 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')
 
@@ -16,24 +12,23 @@ function! ale_linters#cpp#clangcheck#GetCommand(buffer) abort
     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)
+        let l:build_dir = ale#path#Dirname(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'
+    return '%e -analyze %s'
     \   . (empty(l:build_dir) ? ' -extra-arg -Xclang -extra-arg -analyzer-output=text' : '')
-    \   . (!empty(l:user_options) ? ' ' . l:user_options : '')
+    \   . ale#Pad(l:user_options)
     \   . (!empty(l:build_dir) ? ' -p ' . ale#Escape(l:build_dir) : '')
 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',
+\   'executable': {b -> ale#Var(b, 'cpp_clangcheck_executable')},
+\   'command': function('ale_linters#cpp#clangcheck#GetCommand'),
 \   'callback': 'ale#handlers#gcc#HandleGCCFormat',
 \   'lint_file': 1,
 \})

ale_linters/cpp/clangd.vim

@@ -0,0 +1,23 @@
+" Author: Andrey Melentyev <andrey.melentyev@protonmail.com>
+" Description: Clangd language server
+
+call ale#Set('cpp_clangd_executable', 'clangd')
+call ale#Set('cpp_clangd_options', '')
+
+function! ale_linters#cpp#clangd#GetProjectRoot(buffer) abort
+    let l:project_root = ale#path#FindNearestFile(a:buffer, 'compile_commands.json')
+
+    return !empty(l:project_root) ? fnamemodify(l:project_root, ':h') : ''
+endfunction
+
+function! ale_linters#cpp#clangd#GetCommand(buffer) abort
+    return '%e' . ale#Pad(ale#Var(a:buffer, 'cpp_clangd_options'))
+endfunction
+
+call ale#linter#Define('cpp', {
+\   'name': 'clangd',
+\   'lsp': 'stdio',
+\   'executable': {b -> ale#Var(b, 'cpp_clangd_executable')},
+\   'command': function('ale_linters#cpp#clangd#GetCommand'),
+\   'project_root': function('ale_linters#cpp#clangd#GetProjectRoot'),
+\})

ale_linters/cpp/clangtidy.vim

@@ -4,44 +4,22 @@
 
 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', ['*'])
+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)
+    let l:build_dir = ale#c#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))
+    return '%e'
     \   . (!empty(l:checks) ? ' -checks=' . ale#Escape(l:checks) : '')
     \   . ' %s'
     \   . (!empty(l:build_dir) ? ' -p ' . ale#Escape(l:build_dir) : '')
@@ -51,8 +29,8 @@ 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',
+\   'executable': {b -> ale#Var(b, 'cpp_clangtidy_executable')},
+\   'command': function('ale_linters#cpp#clangtidy#GetCommand'),
 \   'callback': 'ale#handlers#gcc#HandleGCCFormat',
 \   'lint_file': 1,
 \})

ale_linters/cpp/clazy.vim

@@ -0,0 +1,32 @@
+" Description: clazy linter for cpp files (clang-based and Qt-oriented)
+
+call ale#Set('cpp_clazy_executable', 'clazy-standalone')
+" Set this option to check the checks clazy will apply.
+call ale#Set('cpp_clazy_checks', ['level1'])
+" Set this option to manually set some options for clazy.
+" This will disable compile_commands.json detection.
+call ale#Set('cpp_clazy_options', '')
+call ale#Set('c_build_dir', '')
+
+function! ale_linters#cpp#clazy#GetCommand(buffer) abort
+    let l:checks = join(ale#Var(a:buffer, 'cpp_clazy_checks'), ',')
+    let l:build_dir = ale#c#GetBuildDirectory(a:buffer)
+
+    " Get the extra options if we couldn't find a build directory.
+    let l:options = ale#Var(a:buffer, 'cpp_clazy_options')
+
+    return '%e'
+    \   . (!empty(l:checks) ? ' -checks=' . ale#Escape(l:checks) : '')
+    \   . (!empty(l:build_dir) ? ' -p ' . ale#Escape(l:build_dir) : '')
+    \   . (!empty(l:options) ? ' ' . l:options : '')
+    \   . ' %s'
+endfunction
+
+call ale#linter#Define('cpp', {
+\   'name': 'clazy',
+\   'output_stream': 'stderr',
+\   'executable': {b -> ale#Var(b, 'cpp_clazy_executable')},
+\   'command': function('ale_linters#cpp#clazy#GetCommand'),
+\   'callback': 'ale#handlers#gcc#HandleGCCFormat',
+\   'lint_file': 1,
+\})

ale_linters/cpp/cppcheck.vim

@@ -4,10 +4,6 @@
 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.
     "
@@ -23,8 +19,7 @@ function! ale_linters#cpp#cppcheck#GetCommand(buffer) abort
     \   : ''
 
     return l:cd_command
-    \   . ale#Escape(ale_linters#cpp#cppcheck#GetExecutable(a:buffer))
-    \   . ' -q --language=c++ '
+    \   . '%e -q --language=c++ '
     \   . l:compile_commands_option
     \   . ale#Var(a:buffer, 'cpp_cppcheck_options')
     \   . ' %t'
@@ -33,7 +28,7 @@ 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',
+\   'executable': {b -> ale#Var(b, 'cpp_cppcheck_executable')},
+\   'command': function('ale_linters#cpp#cppcheck#GetCommand'),
 \   'callback': 'ale#handlers#cppcheck#HandleCppCheckFormat',
 \})

ale_linters/cpp/cpplint.vim

@@ -4,23 +4,17 @@
 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'
+    return '%e' . ale#Pad(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',
+\   'executable': {b -> ale#Var(b, 'cpp_cpplint_executable')},
+\   'command': function('ale_linters#cpp#cpplint#GetCommand'),
 \   'callback': 'ale#handlers#cpplint#HandleCppLintFormat',
 \   'lint_file': 1,
 \})

ale_linters/cpp/cquery.vim

@@ -7,18 +7,13 @@ call ale#Set('cpp_cquery_cache_directory', expand('~/.cache/cquery'))
 function! ale_linters#cpp#cquery#GetProjectRoot(buffer) abort
     let l:project_root = ale#path#FindNearestFile(a:buffer, 'compile_commands.json')
 
+    if empty(l:project_root)
+        let l:project_root = ale#path#FindNearestFile(a:buffer, '.cquery')
+    endif
+
     return !empty(l:project_root) ? fnamemodify(l:project_root, ':h') : ''
 endfunction
 
-function! ale_linters#cpp#cquery#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'cpp_cquery_executable')
-endfunction
-
-function! ale_linters#cpp#cquery#GetCommand(buffer) abort
-    let l:executable = ale_linters#cpp#cquery#GetExecutable(a:buffer)
-    return ale#Escape(l:executable)
-endfunction
-
 function! ale_linters#cpp#cquery#GetInitializationOptions(buffer) abort
     return {'cacheDirectory': ale#Var(a:buffer, 'cpp_cquery_cache_directory')}
 endfunction
@@ -26,9 +21,8 @@ endfunction
 call ale#linter#Define('cpp', {
 \   'name': 'cquery',
 \   'lsp': 'stdio',
-\   'executable_callback': 'ale_linters#cpp#cquery#GetExecutable',
-\   'command_callback': 'ale_linters#cpp#cquery#GetCommand',
-\   'project_root_callback': 'ale_linters#cpp#cquery#GetProjectRoot',
-\   'initialization_options_callback': 'ale_linters#cpp#cquery#GetInitializationOptions',
-\   'language': 'cpp',
+\   'executable': {b -> ale#Var(b, 'cpp_cquery_executable')},
+\   'command': '%e',
+\   'project_root': function('ale_linters#cpp#cquery#GetProjectRoot'),
+\   'initialization_options': function('ale_linters#cpp#cquery#GetInitializationOptions'),
 \})

ale_linters/cpp/flawfinder.vim

@@ -6,26 +6,20 @@ call ale#Set('cpp_flawfinder_options', '')
 call ale#Set('cpp_flawfinder_minlevel', 1)
 call ale#Set('c_flawfinder_error_severity', 6)
 
-function! ale_linters#cpp#flawfinder#GetExecutable(buffer) abort
-   return ale#Var(a:buffer, 'cpp_flawfinder_executable')
-endfunction
-
 function! ale_linters#cpp#flawfinder#GetCommand(buffer) abort
+    " Set the minimum vulnerability level for flawfinder to bother with
+    let l:minlevel = ' --minlevel=' . ale#Var(a:buffer, 'cpp_flawfinder_minlevel')
 
-   " Set the minimum vulnerability level for flawfinder to bother with
-   let l:minlevel = ' --minlevel=' . ale#Var(a:buffer, 'cpp_flawfinder_minlevel')
-
-   return ale#Escape(ale_linters#cpp#flawfinder#GetExecutable(a:buffer))
-   \  . ' -CDQS'
-   \  . ale#Var(a:buffer, 'cpp_flawfinder_options')
-   \  . l:minlevel
-   \  . ' %t'
+    return '%e -CDQS'
+    \  . ale#Var(a:buffer, 'cpp_flawfinder_options')
+    \  . l:minlevel
+    \  . ' %t'
 endfunction
 
 call ale#linter#Define('cpp', {
 \  'name': 'flawfinder',
 \  'output_stream': 'stdout',
-\  'executable_callback': 'ale_linters#cpp#flawfinder#GetExecutable',
-\  'command_callback': 'ale_linters#cpp#flawfinder#GetCommand',
+\  'executable': {b -> ale#Var(b, 'cpp_flawfinder_executable')},
+\  'command': function('ale_linters#cpp#flawfinder#GetCommand'),
 \  'callback': 'ale#handlers#flawfinder#HandleFlawfinderFormat',
 \})

ale_linters/cpp/gcc.vim

@@ -4,30 +4,22 @@
 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, output) abort
     let l:cflags = ale#c#GetCFlags(a:buffer, a:output)
 
     " -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')) . ' '
-    \   . l:cflags
-    \   . ale#Var(a:buffer, 'cpp_gcc_options') . ' -'
+    return '%e -S -x c++ -fsyntax-only'
+    \   . ' -iquote ' . ale#Escape(fnamemodify(bufname(a:buffer), ':p:h'))
+    \   . ale#Pad(l:cflags)
+    \   . ale#Pad(ale#Var(a:buffer, 'cpp_gcc_options')) . ' -'
 endfunction
 
 call ale#linter#Define('cpp', {
 \   'name': 'gcc',
 \   'aliases': ['g++'],
 \   'output_stream': 'stderr',
-\   'executable_callback': 'ale_linters#cpp#gcc#GetExecutable',
-\   'command_chain': [
-\       {'callback': 'ale#c#GetMakeCommand', 'output_stream': 'stdout'},
-\       {'callback': 'ale_linters#cpp#gcc#GetCommand'},
-\   ],
-\   'callback': 'ale#handlers#gcc#HandleGCCFormat',
+\   'executable': {b -> ale#Var(b, 'cpp_gcc_executable')},
+\   'command': {b -> ale#c#RunMakeCommand(b, function('ale_linters#cpp#gcc#GetCommand'))},
+\   'callback': 'ale#handlers#gcc#HandleGCCFormatWithIncludes',
 \})

ale_linters/crystal/ameba.vim

@@ -0,0 +1,57 @@
+" Author: Harrison Bachrach - https://github.com/HarrisonB
+" Description: Ameba, a linter for crystal files
+
+call ale#Set('crystal_ameba_executable', 'bin/ameba')
+
+function! ale_linters#crystal#ameba#GetCommand(buffer) abort
+    let l:executable = ale#Var(a:buffer, 'crystal_ameba_executable')
+
+    return ale#Escape(l:executable)
+    \   . ' --format json '
+    \   .  ale#Escape(expand('#' . a:buffer . ':p'))
+endfunction
+
+" Handle output from ameba
+function! ale_linters#crystal#ameba#HandleAmebaOutput(buffer, lines) abort
+    if len(a:lines) == 0
+        return []
+    endif
+
+    let l:errors = ale#util#FuzzyJSONDecode(a:lines[0], {})
+
+    if !has_key(l:errors, 'summary')
+    \|| l:errors['summary']['issues_count'] == 0
+    \|| empty(l:errors['sources'])
+        return []
+    endif
+
+    let l:output = []
+
+    for l:error in l:errors['sources'][0]['issues']
+        let l:start_col = str2nr(l:error['location']['column'])
+        let l:end_col = str2nr(l:error['end_location']['column'])
+
+        if !l:end_col
+            let l:end_col = l:start_col + 1
+        endif
+
+        call add(l:output, {
+        \   'lnum': str2nr(l:error['location']['line']),
+        \   'col': l:start_col,
+        \   'end_col': l:end_col,
+        \   'code': l:error['rule_name'],
+        \   'text': l:error['message'],
+        \   'type': 'W',
+        \})
+    endfor
+
+    return l:output
+endfunction
+
+call ale#linter#Define('crystal', {
+\   'name': 'ameba',
+\   'executable': {b -> ale#Var(b, 'crystal_ameba_executable')},
+\   'command': function('ale_linters#crystal#ameba#GetCommand'),
+\   'callback': 'ale_linters#crystal#ameba#HandleAmebaOutput',
+\   'lint_file': 1,
+\})

ale_linters/crystal/crystal.vim

@@ -26,6 +26,6 @@ call ale#linter#Define('crystal', {
 \   'executable': 'crystal',
 \   'output_stream': 'both',
 \   'lint_file': 1,
-\   'command_callback': 'ale_linters#crystal#crystal#GetCommand',
+\   'command': function('ale_linters#crystal#crystal#GetCommand'),
 \   'callback': 'ale_linters#crystal#crystal#Handle',
 \})

ale_linters/cs/mcs.vim

@@ -1,7 +1,11 @@
 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'
+    let l:options = ale#Var(a:buffer, 'cs_mcs_options')
+
+    return 'mcs -unsafe --parse'
+    \   . (!empty(l:options) ? ' ' . l:options : '')
+    \   . ' %t'
 endfunction
 
 function! ale_linters#cs#mcs#Handle(buffer, lines) abort
@@ -28,6 +32,6 @@ call ale#linter#Define('cs',{
 \   'name': 'mcs',
 \   'output_stream': 'stderr',
 \   'executable': 'mcs',
-\   'command_callback': 'ale_linters#cs#mcs#GetCommand',
+\   'command': function('ale_linters#cs#mcs#GetCommand'),
 \   'callback': 'ale_linters#cs#mcs#Handle',
 \})

ale_linters/cs/mcsc.vim

@@ -29,16 +29,16 @@ function! ale_linters#cs#mcsc#GetCommand(buffer) abort
     \   : ''
 
     " register temporary module target file with ale
-    let l:out = tempname()
-    call ale#engine#ManageFile(a:buffer, l:out)
+    " register temporary module target file with ALE.
+    let l:out = ale#command#CreateFile(a:buffer)
 
     " The code is compiled as a module and the output is redirected to a
     " temporary file.
     return ale#path#CdString(s:GetWorkingDirectory(a:buffer))
     \    . 'mcs -unsafe'
-    \    . ' ' . ale#Var(a:buffer, 'cs_mcsc_options')
-    \    . ' ' . l:lib_option
-    \    . ' ' . l:r_option
+    \    . ale#Pad(ale#Var(a:buffer, 'cs_mcsc_options'))
+    \    . ale#Pad(l:lib_option)
+    \    . ale#Pad(l:r_option)
     \    . ' -out:' . l:out
     \    . ' -t:module'
     \    . ' -recurse:' . ale#Escape('*.cs')
@@ -75,7 +75,7 @@ call ale#linter#Define('cs',{
 \   'name': 'mcsc',
 \   'output_stream': 'stderr',
 \   'executable': 'mcs',
-\   'command_callback': 'ale_linters#cs#mcsc#GetCommand',
+\   'command': function('ale_linters#cs#mcsc#GetCommand'),
 \   'callback': 'ale_linters#cs#mcsc#Handle',
 \   'lint_file': 1
 \})

ale_linters/css/csslint.vim

@@ -13,6 +13,6 @@ endfunction
 call ale#linter#Define('css', {
 \   'name': 'csslint',
 \   'executable': 'csslint',
-\   'command_callback': 'ale_linters#css#csslint#GetCommand',
+\   'command': function('ale_linters#css#csslint#GetCommand'),
 \   'callback': 'ale#handlers#css#HandleCSSLintFormat',
 \})

ale_linters/css/stylelint.vim

@@ -4,21 +4,16 @@ call ale#Set('css_stylelint_executable', 'stylelint')
 call ale#Set('css_stylelint_options', '')
 call ale#Set('css_stylelint_use_global', get(g:, 'ale_use_global_executables', 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')
+    return '%e ' . ale#Pad(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',
+\   'executable': {b -> ale#node#FindExecutable(b, 'css_stylelint', [
+\       'node_modules/.bin/stylelint',
+\   ])},
+\   'command': function('ale_linters#css#stylelint#GetCommand'),
 \   'callback': 'ale#handlers#css#HandleStyleLintFormat',
 \})

ale_linters/cucumber/cucumber.vim

@@ -22,6 +22,7 @@ function! ale_linters#cucumber#cucumber#Handle(buffer, lines) abort
     endtry
 
     let l:output = []
+
     for l:element in get(l:json, 'elements', [])
         for l:step in l:element['steps']
             if l:step['result']['status'] is# 'undefined'
@@ -40,6 +41,6 @@ endfunction
 call ale#linter#Define('cucumber', {
 \   'name': 'cucumber',
 \   'executable': 'cucumber',
-\   'command_callback': 'ale_linters#cucumber#cucumber#GetCommand',
+\   'command': function('ale_linters#cucumber#cucumber#GetCommand'),
 \   'callback': 'ale_linters#cucumber#cucumber#Handle'
 \})

ale_linters/cuda/nvcc.vim

@@ -4,20 +4,14 @@
 call ale#Set('cuda_nvcc_executable', 'nvcc')
 call ale#Set('cuda_nvcc_options', '-std=c++11')
 
-function! ale_linters#cuda#nvcc#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'cuda_nvcc_executable')
-endfunction
-
 function! ale_linters#cuda#nvcc#GetCommand(buffer) abort
     " Unused: use ale#util#nul_file
-    " let l:output_file = tempname() . '.ii'
-    " call ale#engine#ManageFile(a:buffer, l:output_file)
-
-    return ale#Escape(ale_linters#cuda#nvcc#GetExecutable(a:buffer))
-    \   . ' -cuda '
-    \   . ale#c#IncludeOptions(ale#c#FindLocalHeaderPaths(a:buffer))
-    \   . ale#Var(a:buffer, 'cuda_nvcc_options') . ' %s'
-    \   . ' -o ' . g:ale#util#nul_file
+    " let l:output_file = ale#util#Tempname() . '.ii'
+    " call ale#command#ManageFile(a:buffer, l:output_file)
+    return '%e -cuda'
+    \   . ale#Pad(ale#c#IncludeOptions(ale#c#FindLocalHeaderPaths(a:buffer)))
+    \   . ale#Pad(ale#Var(a:buffer, 'cuda_nvcc_options'))
+    \   . ' %s -o ' . g:ale#util#nul_file
 endfunction
 
 function! ale_linters#cuda#nvcc#HandleNVCCFormat(buffer, lines) abort
@@ -28,7 +22,6 @@ function! ale_linters#cuda#nvcc#HandleNVCCFormat(buffer, lines) abort
     let l:output = []
 
     for l:match in ale#util#GetMatches(a:lines, l:pattern)
-
         let l:item = {
         \   'lnum': str2nr(l:match[2]),
         \   'type': l:match[4] =~# 'error' ? 'E' : 'W',
@@ -49,8 +42,8 @@ endfunction
 call ale#linter#Define('cuda', {
 \   'name': 'nvcc',
 \   'output_stream': 'stderr',
-\   'executable_callback': 'ale_linters#cuda#nvcc#GetExecutable',
-\   'command_callback': 'ale_linters#cuda#nvcc#GetCommand',
+\   'executable': {b -> ale#Var(b, 'cuda_nvcc_executable')},
+\   'command': function('ale_linters#cuda#nvcc#GetCommand'),
 \   'callback': 'ale_linters#cuda#nvcc#HandleNVCCFormat',
 \   'lint_file': 1,
 \})

ale_linters/cypher/cypher_lint.vim

@@ -0,0 +1,26 @@
+" Author: Francisco Lopes <francisco@oblita.com>
+" Description: Linting for Neo4j's Cypher
+
+function! ale_linters#cypher#cypher_lint#Handle(buffer, lines) abort
+    let l:pattern = '\v^([a-zA-Z]?:?[^:]+):(\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[4],
+        \   'type': 'E',
+        \})
+    endfor
+
+    return l:output
+endfunction
+
+call ale#linter#Define('cypher', {
+\   'name': 'cypher_lint',
+\   'executable': 'cypher-lint',
+\   'command': 'cypher-lint',
+\   'output_stream': 'stderr',
+\   'callback': 'ale_linters#cypher#cypher_lint#Handle',
+\})

ale_linters/d/dls.vim

@@ -0,0 +1,22 @@
+" Author: aurieh <me@aurieh.me>
+" Description: A Language Server implementation for D
+
+call ale#Set('d_dls_executable', 'dls')
+
+function! ale_linters#d#dls#GetExecutable(buffer) abort
+    return ale#Var(a:buffer, 'd_dls_executable')
+endfunction
+
+function! ale_linters#d#dls#FindProjectRoot(buffer) abort
+    " Note: this will return . if dub config is empty
+    " dls can run outside DUB projects just fine
+    return fnamemodify(ale#d#FindDUBConfig(a:buffer), ':h')
+endfunction
+
+call ale#linter#Define('d', {
+\   'name': 'dls',
+\   'lsp': 'stdio',
+\   'executable': function('ale_linters#d#dls#GetExecutable'),
+\   'command': function('ale_linters#d#dls#GetExecutable'),
+\   'project_root': function('ale_linters#d#dls#FindProjectRoot'),
+\})

ale_linters/d/dmd.vim

@@ -1,28 +1,14 @@
 " 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
+function! ale_linters#d#dmd#GetDUBCommand(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)
+    let l:dub_file = ale#d#FindDUBConfig(a:buffer)
 
     if empty(l:dub_file)
         return ''
@@ -35,7 +21,18 @@ function! ale_linters#d#dmd#DUBCommand(buffer) abort
     \   . ' && dub describe --import-paths'
 endfunction
 
-function! ale_linters#d#dmd#DMDCommand(buffer, dub_output) abort
+function! ale_linters#d#dmd#RunDUBCommand(buffer) abort
+    let l:command = ale_linters#d#dmd#GetDUBCommand(a:buffer)
+
+    if empty(l:command)
+        " If we can't run DUB, just run DMD.
+        return ale_linters#d#dmd#DMDCommand(a:buffer, [], {})
+    endif
+
+    return ale#command#Run(a:buffer, l:command, function('ale_linters#d#dmd#DMDCommand'))
+endfunction
+
+function! ale_linters#d#dmd#DMDCommand(buffer, dub_output, meta) abort
     let l:import_list = []
 
     " Build a list of import paths generated from DUB, if available.
@@ -71,9 +68,7 @@ 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'},
-\   ],
+\   'command': function('ale_linters#d#dmd#RunDUBCommand'),
 \   'callback': 'ale_linters#d#dmd#Handle',
+\   'output_stream': 'stderr',
 \})

ale_linters/dafny/dafny.vim

@@ -13,6 +13,7 @@ function! ale_linters#dafny#dafny#Handle(buffer, lines) abort
         \    'type': l:match[4] =~# '^Error' ? 'E' : 'W'
         \ })
     endfor
+
     return l:output
 endfunction
 

ale_linters/dart/dartanalyzer.vim

@@ -3,15 +3,10 @@
 
 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)
+    return '%e'
     \   . (!empty(l:path) ? ' --packages ' . ale#Escape(l:path) : '')
     \   . ' %s'
 endfunction
@@ -34,8 +29,8 @@ endfunction
 
 call ale#linter#Define('dart', {
 \   'name': 'dartanalyzer',
-\   'executable_callback': 'ale_linters#dart#dartanalyzer#GetExecutable',
-\   'command_callback': 'ale_linters#dart#dartanalyzer#GetCommand',
+\   'executable': {b -> ale#Var(b, 'dart_dartanalyzer_executable')},
+\   'command': function('ale_linters#dart#dartanalyzer#GetCommand'),
 \   'callback': 'ale_linters#dart#dartanalyzer#Handle',
 \   'lint_file': 1,
 \})

ale_linters/dart/language_server.vim

@@ -3,10 +3,6 @@
 
 call ale#Set('dart_language_server_executable', 'dart_language_server')
 
-function! ale_linters#dart#language_server#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'dart_language_server_executable')
-endfunction
-
 function! ale_linters#dart#language_server#GetProjectRoot(buffer) abort
     " Note: pub only looks for pubspec.yaml, there's no point in adding
     " support for pubspec.yml
@@ -18,8 +14,7 @@ endfunction
 call ale#linter#Define('dart', {
 \   'name': 'language_server',
 \   'lsp': 'stdio',
-\   'executable_callback': 'ale_linters#dart#language_server#GetExecutable',
-\   'command_callback': 'ale_linters#dart#language_server#GetExecutable',
-\   'language': 'dart',
-\   'project_root_callback': 'ale_linters#dart#language_server#GetProjectRoot',
+\   'executable': {b -> ale#Var(b, 'dart_language_server_executable')},
+\   'command': '%e',
+\   'project_root': function('ale_linters#dart#language_server#GetProjectRoot'),
 \})

ale_linters/dockerfile/dockerfile_lint.vim

@@ -0,0 +1,61 @@
+" Author: Alexander Olofsson <alexander.olofsson@liu.se>
+
+call ale#Set('dockerfile_dockerfile_lint_executable', 'dockerfile_lint')
+call ale#Set('dockerfile_dockerfile_lint_options', '')
+
+function! ale_linters#dockerfile#dockerfile_lint#GetType(type) abort
+    if a:type is? 'error'
+        return 'E'
+    elseif a:type is? 'warn'
+        return 'W'
+    endif
+
+    return 'I'
+endfunction
+
+function! ale_linters#dockerfile#dockerfile_lint#Handle(buffer, lines) abort
+    try
+        let l:data = json_decode(join(a:lines, ''))
+    catch
+        return []
+    endtry
+
+    if empty(l:data)
+        " Should never happen, but it's better to be on the safe side
+        return []
+    endif
+
+    let l:messages = []
+
+    for l:type in ['error', 'warn', 'info']
+        for l:object in l:data[l:type]['data']
+            let l:line = get(l:object, 'line', -1)
+            let l:message = l:object['message']
+
+            if get(l:object, 'description', 'None') isnot# 'None'
+                let l:message = l:message . '. ' . l:object['description']
+            endif
+
+            call add(l:messages, {
+            \   'lnum': l:line,
+            \   'text': l:message,
+            \   'type': ale_linters#dockerfile#dockerfile_lint#GetType(l:type),
+            \})
+        endfor
+    endfor
+
+    return l:messages
+endfunction
+
+function! ale_linters#dockerfile#dockerfile_lint#GetCommand(buffer) abort
+    return '%e' . ale#Pad(ale#Var(a:buffer, 'dockerfile_dockerfile_lint_options'))
+    \   . ' -p -j -f'
+    \   . ' %t'
+endfunction
+
+call ale#linter#Define('dockerfile', {
+\   'name': 'dockerfile_lint',
+\   'executable': {b -> ale#Var(b, 'dockerfile_dockerfile_lint_executable')},
+\   'command': function('ale_linters#dockerfile#dockerfile_lint#GetCommand'),
+\   'callback': 'ale_linters#dockerfile#dockerfile_lint#Handle',
+\})

ale_linters/dockerfile/hadolint.vim

@@ -82,16 +82,18 @@ 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',
+\   'executable': function('ale_linters#dockerfile#hadolint#GetExecutable'),
+\   'command': function('ale_linters#dockerfile#hadolint#GetCommand'),
 \   'callback': 'ale_linters#dockerfile#hadolint#Handle',
 \})

ale_linters/elixir/credo.vim

@@ -11,10 +11,18 @@ function! ale_linters#elixir#credo#Handle(buffer, lines) abort
         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'
+        " Refactoring opportunities
+        if l:type is# 'F'
             let l:type = 'W'
+        " Consistency
+        elseif l:type is# 'C'
+            let l:type = 'W'
+        " Software Design
+        elseif l:type is# 'D'
+            let l:type = 'I'
+        " Code Readability
+        elseif l:type is# 'R'
+            let l:type = 'I'
         endif
 
         call add(l:output, {
@@ -29,9 +37,27 @@ function! ale_linters#elixir#credo#Handle(buffer, lines) abort
     return l:output
 endfunction
 
+function! ale_linters#elixir#credo#GetMode() abort
+    if get(g:, 'ale_elixir_credo_strict', 0)
+        return '--strict'
+    else
+        return 'suggest'
+    endif
+endfunction
+
+function! ale_linters#elixir#credo#GetCommand(buffer) abort
+    let l:project_root = ale#handlers#elixir#FindMixProjectRoot(a:buffer)
+    let l:mode = ale_linters#elixir#credo#GetMode()
+
+    return ale#path#CdString(l:project_root)
+    \ . 'mix help credo && '
+    \ . 'mix credo ' . ale_linters#elixir#credo#GetMode()
+    \ . ' --format=flycheck --read-from-stdin %s'
+endfunction
+
 call ale#linter#Define('elixir', {
 \   'name': 'credo',
 \   'executable': 'mix',
-\   'command': 'mix help credo && mix credo suggest --format=flycheck --read-from-stdin %s',
+\   'command': function('ale_linters#elixir#credo#GetCommand'),
 \   'callback': 'ale_linters#elixir#credo#Handle',
 \})

ale_linters/elixir/dialyxir.vim

@@ -25,10 +25,17 @@ function! ale_linters#elixir#dialyxir#Handle(buffer, lines) abort
     return l:output
 endfunction
 
+function! ale_linters#elixir#dialyxir#GetCommand(buffer) abort
+    let l:project_root = ale#handlers#elixir#FindMixProjectRoot(a:buffer)
+
+    return ale#path#CdString(l:project_root)
+    \ . ' mix help dialyzer && mix dialyzer'
+endfunction
+
 call ale#linter#Define('elixir', {
 \   'name': 'dialyxir',
 \   'executable': 'mix',
-\   'command': 'mix dialyzer',
+\   'command': function('ale_linters#elixir#dialyxir#GetCommand'),
 \   'callback': 'ale_linters#elixir#dialyxir#Handle',
 \})
 

ale_linters/elixir/dogma.vim

@@ -29,10 +29,17 @@ function! ale_linters#elixir#dogma#Handle(buffer, lines) abort
     return l:output
 endfunction
 
+function! ale_linters#elixir#dogma#GetCommand(buffer) abort
+    let l:project_root = ale#handlers#elixir#FindMixProjectRoot(a:buffer)
+
+    return ale#path#CdString(l:project_root)
+    \ . ' mix help dogma && mix dogma %s --format=flycheck'
+endfunction
+
 call ale#linter#Define('elixir', {
 \   'name': 'dogma',
 \   'executable': 'mix',
-\   'command': 'mix help dogma && mix dogma %s --format=flycheck',
+\   'command': function('ale_linters#elixir#dogma#GetCommand'),
 \   'lint_file': 1,
 \   'callback': 'ale_linters#elixir#dogma#Handle',
 \})

ale_linters/elixir/elixir_ls.vim

@@ -0,0 +1,21 @@
+" Author: Jon Parise <jon@indelible.org>
+" Description: ElixirLS integration (https://github.com/JakeBecker/elixir-ls)
+
+call ale#Set('elixir_elixir_ls_release', 'elixir-ls')
+call ale#Set('elixir_elixir_ls_config', {})
+
+function! ale_linters#elixir#elixir_ls#GetExecutable(buffer) abort
+    let l:dir = ale#path#Simplify(ale#Var(a:buffer, 'elixir_elixir_ls_release'))
+    let l:cmd = has('win32') ? '\language_server.bat' : '/language_server.sh'
+
+    return l:dir . l:cmd
+endfunction
+
+call ale#linter#Define('elixir', {
+\   'name': 'elixir-ls',
+\   'lsp': 'stdio',
+\   'executable': function('ale_linters#elixir#elixir_ls#GetExecutable'),
+\   'command': function('ale_linters#elixir#elixir_ls#GetExecutable'),
+\   'project_root': function('ale#handlers#elixir#FindMixUmbrellaRoot'),
+\   'lsp_config': {b -> ale#Var(b, 'elixir_elixir_ls_config')},
+\})

ale_linters/elixir/mix.vim

@@ -10,7 +10,6 @@ function! ale_linters#elixir#mix#Handle(buffer, lines) abort
     "
     " TODO: Warning format
     " warning: variable "foobar" does not exist and is being expanded to "foobar()", please use parentheses to remove the ambiguity or change the variable name
-
     let l:pattern = '\v\(([^\)]+Error)\) ([^:]+):([^:]+): (.+)$'
     let l:output = []
 
@@ -30,32 +29,24 @@ function! ale_linters#elixir#mix#Handle(buffer, lines) abort
     return l:output
 endfunction
 
-function! ale_linters#elixir#mix#FindProjectRoot(buffer) abort
-    let l:mix_file = ale#path#FindNearestFile(a:buffer, 'mix.exs')
-    if !empty(l:mix_file)
-      return fnamemodify(l:mix_file, ':p:h')
-    endif
-    return '.'
-endfunction
-
 function! ale_linters#elixir#mix#GetCommand(buffer) abort
-    let l:project_root = ale_linters#elixir#mix#FindProjectRoot(a:buffer)
+    let l:project_root = ale#handlers#elixir#FindMixProjectRoot(a:buffer)
 
-    let l:temp_dir = ale#engine#CreateDirectory(a:buffer)
+    let l:temp_dir = ale#command#CreateDirectory(a:buffer)
 
     let l:mix_build_path = has('win32')
     \   ? 'set MIX_BUILD_PATH=' . ale#Escape(l:temp_dir) . ' &&'
     \   : 'MIX_BUILD_PATH=' . ale#Escape(l:temp_dir)
 
     return ale#path#CdString(l:project_root)
-          \ . l:mix_build_path
-          \ . ' mix compile %s'
+    \ . l:mix_build_path
+    \ . ' mix compile %s'
 endfunction
 
 call ale#linter#Define('elixir', {
 \   'name': 'mix',
 \   'executable': 'mix',
-\   'command_callback': 'ale_linters#elixir#mix#GetCommand',
+\   'command': function('ale_linters#elixir#mix#GetCommand'),
 \   'callback': 'ale_linters#elixir#mix#Handle',
 \   'lint_file': 1,
 \})

ale_linters/elm/elm_lsp.vim

@@ -0,0 +1,22 @@
+" Author: antew - https://github.com/antew
+" Description: LSP integration for elm, currently supports diagnostics (linting)
+
+call ale#Set('elm_lsp_executable', 'elm-lsp')
+call ale#Set('elm_lsp_use_global', get(g:, 'ale_use_global_executables', 0))
+
+function! elm_lsp#GetRootDir(buffer) abort
+    let l:elm_json = ale#path#FindNearestFile(a:buffer, 'elm.json')
+
+    return !empty(l:elm_json) ? fnamemodify(l:elm_json, ':p:h') : ''
+endfunction
+
+call ale#linter#Define('elm', {
+\   'name': 'elm_lsp',
+\   'lsp': 'stdio',
+\   'executable': {b -> ale#node#FindExecutable(b, 'elm_lsp', [
+\       'node_modules/.bin/elm-lsp',
+\   ])},
+\   'command': '%e --stdio',
+\   'project_root': function('elm_lsp#GetRootDir'),
+\   'language': 'elm'
+\})

ale_linters/elm/make.vim

@@ -4,12 +4,6 @@
 call ale#Set('elm_make_executable', 'elm')
 call ale#Set('elm_make_use_global', get(g:, 'ale_use_global_executables', 0))
 
-function! ale_linters#elm#make#GetExecutable(buffer) abort
-    return ale#node#FindExecutable(a:buffer, 'elm_make', [
-    \   'node_modules/.bin/elm',
-    \])
-endfunction
-
 function! ale_linters#elm#make#Handle(buffer, lines) abort
     let l:output = []
     let l:unparsed_lines = []
@@ -128,14 +122,7 @@ function! ale_linters#elm#make#HandleElm018Line(line, output) abort
 endfunction
 
 function! ale_linters#elm#make#FileIsBuffer(path) abort
-    let l:is_windows = has('win32')
-    let l:temp_dir = l:is_windows ? $TMP : $TMPDIR
-
-    if has('win32')
-        return a:path[0:len(l:temp_dir) - 1] is? l:temp_dir
-    else
-        return a:path[0:len(l:temp_dir) - 1] is# l:temp_dir
-    endif
+    return ale#path#IsTempName(a:path)
 endfunction
 
 function! ale_linters#elm#make#ParseMessage(message) abort
@@ -143,47 +130,111 @@ function! ale_linters#elm#make#ParseMessage(message) abort
 endfunction
 
 function! ale_linters#elm#make#ParseMessageItem(item) abort
-    if type(a:item) == type('')
+    if type(a:item) is v:t_string
         return a:item
     else
         return a:item.string
     endif
 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
+function! ale_linters#elm#make#GetPackageFile(buffer) abort
     let l:elm_json = ale#path#FindNearestFile(a:buffer, 'elm.json')
-    let l:elm_exe = ale_linters#elm#make#GetExecutable(a:buffer)
 
     if empty(l:elm_json)
         " Fallback to Elm 0.18
         let l:elm_json = ale#path#FindNearestFile(a:buffer, 'elm-package.json')
     endif
 
+    return l:elm_json
+endfunction
+
+function! ale_linters#elm#make#IsVersionGte19(buffer) abort
+    let l:elm_json = ale_linters#elm#make#GetPackageFile(a:buffer)
+
+    if l:elm_json =~# '-package'
+        return 0
+    else
+        return 1
+    endif
+endfunction
+
+function! ale_linters#elm#make#GetRootDir(buffer) abort
+    let l:elm_json = ale_linters#elm#make#GetPackageFile(a:buffer)
+
     if empty(l:elm_json)
+        return ''
+    else
+        return fnamemodify(l:elm_json, ':p:h')
+    endif
+endfunction
+
+function! ale_linters#elm#make#IsTest(buffer) abort
+    let l:root_dir = ale_linters#elm#make#GetRootDir(a:buffer)
+
+    if empty(l:root_dir)
+        return 0
+    endif
+
+    let l:tests_dir = join([l:root_dir, 'tests', ''], has('win32') ? '\' : '/')
+
+    let l:buffer_path = fnamemodify(bufname(a:buffer), ':p')
+
+    if stridx(l:buffer_path, l:tests_dir) == 0
+        return 1
+    else
+        return 0
+    endif
+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:executable = ale_linters#elm#make#GetExecutable(a:buffer)
+    let l:root_dir = ale_linters#elm#make#GetRootDir(a:buffer)
+    let l:is_v19 = ale_linters#elm#make#IsVersionGte19(a:buffer)
+    let l:is_using_elm_test = l:executable =~# 'elm-test$'
+
+    if empty(l:root_dir)
         let l:dir_set_cmd = ''
     else
-        let l:root_dir = fnamemodify(l:elm_json, ':p:h')
         let l:dir_set_cmd = 'cd ' . ale#Escape(l:root_dir) . ' && '
     endif
 
+    " elm-test needs to know the path of elm-make if elm isn't installed globally.
+    " https://github.com/rtfeldman/node-test-runner/blob/57728f10668f2d2ab3179e7e3208bcfa9a1f19aa/README.md#--compiler
+    if l:is_v19 && l:is_using_elm_test
+        let l:elm_make_executable = ale#node#FindExecutable(a:buffer, 'elm_make', ['node_modules/.bin/elm'])
+        let l:elm_test_compiler_flag = ' --compiler ' . l:elm_make_executable . ' '
+    else
+        let l:elm_test_compiler_flag = ' '
+    endif
+
     " The elm 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-compiler/blob/19d5a769b30ec0b2fc4475985abb4cd94cd1d6c3/builder/src/Generate/Output.hs#L253
-    let l:elm_cmd = ale#Escape(l:elm_exe)
-    \   . ' make'
-    \   . ' --report=json'
-    \   . ' --output=/dev/null'
+    return l:dir_set_cmd . '%e make --report=json --output=/dev/null' . l:elm_test_compiler_flag . '%t'
+endfunction
 
-    return l:dir_set_cmd . ' ' . l:elm_cmd . ' %t'
+function! ale_linters#elm#make#GetExecutable(buffer) abort
+    let l:is_test = ale_linters#elm#make#IsTest(a:buffer)
+    let l:is_v19 = ale_linters#elm#make#IsVersionGte19(a:buffer)
+
+    if l:is_test && l:is_v19
+        return ale#node#FindExecutable(
+        \   a:buffer,
+        \   'elm_make',
+        \   ['node_modules/.bin/elm-test', 'node_modules/.bin/elm']
+        \)
+    else
+        return ale#node#FindExecutable(a:buffer, 'elm_make', ['node_modules/.bin/elm'])
+    endif
 endfunction
 
 call ale#linter#Define('elm', {
-\    'name': 'make',
-\    'executable_callback': 'ale_linters#elm#make#GetExecutable',
-\    'output_stream': 'both',
-\    'command_callback': 'ale_linters#elm#make#GetCommand',
-\    'callback': 'ale_linters#elm#make#Handle'
+\   'name': 'make',
+\   'executable': function('ale_linters#elm#make#GetExecutable'),
+\   'output_stream': 'both',
+\   'command': function('ale_linters#elm#make#GetCommand'),
+\   'callback': 'ale_linters#elm#make#Handle'
 \})

ale_linters/erlang/erlc.vim

@@ -3,8 +3,8 @@
 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)
+    let l:output_file = ale#util#Tempname()
+    call ale#command#ManageFile(a:buffer, l:output_file)
 
     return 'erlc -o ' . ale#Escape(l:output_file)
     \   . ' ' . ale#Var(a:buffer, 'erlang_erlc_options')
@@ -91,6 +91,6 @@ endfunction
 call ale#linter#Define('erlang', {
 \   'name': 'erlc',
 \   'executable': 'erlc',
-\   'command_callback': 'ale_linters#erlang#erlc#GetCommand',
+\   'command': function('ale_linters#erlang#erlc#GetCommand'),
 \   'callback': 'ale_linters#erlang#erlc#Handle',
 \})

ale_linters/erlang/syntaxerl.vim

@@ -3,24 +3,22 @@
 
 call ale#Set('erlang_syntaxerl_executable', 'syntaxerl')
 
+function! ale_linters#erlang#syntaxerl#RunHelpCommand(buffer) abort
+    let l:executable = ale#Var(a:buffer, 'erlang_syntaxerl_executable')
 
-function! ale_linters#erlang#syntaxerl#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'erlang_syntaxerl_executable')
+    return ale#command#Run(
+    \   a:buffer,
+    \   ale#Escape(l:executable) . ' -h',
+    \   function('ale_linters#erlang#syntaxerl#GetCommand'),
+    \)
 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
+function! ale_linters#erlang#syntaxerl#GetCommand(buffer, output, meta) 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')
+    return '%e' . (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 = []
@@ -36,18 +34,9 @@ function! ale_linters#erlang#syntaxerl#Handle(buffer, lines) abort
     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'},
-\   ],
+\   'executable': {b -> ale#Var(b, 'erlang_syntaxerl_executable')},
+\   'command': {b -> ale_linters#erlang#syntaxerl#RunHelpCommand(b)},
 \   'callback': 'ale_linters#erlang#syntaxerl#Handle',
 \})

ale_linters/eruby/erb.vim

@@ -19,7 +19,7 @@ call ale#linter#Define('eruby', {
 \   'aliases': ['erubylint'],
 \   'executable': 'erb',
 \   'output_stream': 'stderr',
-\   'command_callback': 'ale_linters#eruby#erb#GetCommand',
+\   'command': function('ale_linters#eruby#erb#GetCommand'),
 \   'callback': 'ale#handlers#ruby#HandleSyntaxErrors',
 \})
 

ale_linters/eruby/erubi.vim

@@ -1,14 +1,10 @@
 " Author: Eddie Lebow https://github.com/elebow
 " Description: eruby checker using `erubi`
 
-function! ale_linters#eruby#erubi#CheckErubi(buffer) abort
-    return 'ruby -r erubi/capture_end -e ' . ale#Escape('""')
-endfunction
-
-function! ale_linters#eruby#erubi#GetCommand(buffer, check_erubi_output) abort
+function! ale_linters#eruby#erubi#GetCommand(buffer, output, meta) abort
     let l:rails_root = ale#ruby#FindRailsRoot(a:buffer)
 
-    if (!empty(a:check_erubi_output))
+    if !empty(a:output)
         " The empty command in CheckErubi returns nothing if erubi runs and
         " emits an error if erubi is not present
         return ''
@@ -27,9 +23,10 @@ endfunction
 call ale#linter#Define('eruby', {
 \   'name': 'erubi',
 \   'executable': 'ruby',
-\   'command_chain': [
-\     {'callback': 'ale_linters#eruby#erubi#CheckErubi'},
-\     {'callback': 'ale_linters#eruby#erubi#GetCommand', 'output_stream': 'stderr'},
-\   ],
+\   'command': {buffer -> ale#command#Run(
+\       buffer,
+\       'ruby -r erubi/capture_end -e ' . ale#Escape('""'),
+\       function('ale_linters#eruby#erubi#GetCommand'),
+\   )},
 \   'callback': 'ale#handlers#ruby#HandleSyntaxErrors',
 \})

ale_linters/eruby/erubis.vim

@@ -18,6 +18,6 @@ call ale#linter#Define('eruby', {
 \   'name': 'erubis',
 \   'executable': 'erubis',
 \   'output_stream': 'stderr',
-\   'command_callback': 'ale_linters#eruby#erubis#GetCommand',
+\   'command': function('ale_linters#eruby#erubis#GetCommand'),
 \   'callback': 'ale#handlers#ruby#HandleSyntaxErrors',
 \})

ale_linters/eruby/ruumba.vim

@@ -0,0 +1,62 @@
+" Author: aclemons - https://github.com/aclemons
+" based on the ale rubocop linter
+" Description: Ruumba, RuboCop linting for ERB templates.
+
+call ale#Set('eruby_ruumba_executable', 'ruumba')
+call ale#Set('eruby_ruumba_options', '')
+
+function! ale_linters#eruby#ruumba#GetCommand(buffer) abort
+    let l:executable = ale#Var(a:buffer, 'eruby_ruumba_executable')
+
+    return ale#handlers#ruby#EscapeExecutable(l:executable, 'ruumba')
+    \   . ' --format json --force-exclusion '
+    \   . ale#Var(a:buffer, 'eruby_ruumba_options')
+    \   . ' --stdin ' . ale#Escape(expand('#' . a:buffer . ':p'))
+endfunction
+
+function! ale_linters#eruby#ruumba#Handle(buffer, lines) abort
+    try
+        let l:errors = json_decode(a:lines[0])
+    catch
+        return []
+    endtry
+
+    if !has_key(l:errors, 'summary')
+    \|| l:errors['summary']['offense_count'] == 0
+    \|| empty(l:errors['files'])
+        return []
+    endif
+
+    let l:output = []
+
+    for l:error in l:errors['files'][0]['offenses']
+        let l:start_col = l:error['location']['column'] + 0
+        call add(l:output, {
+        \   'lnum': l:error['location']['line'] + 0,
+        \   'col': l:start_col,
+        \   'end_col': l:start_col + l:error['location']['length'] - 1,
+        \   'code': l:error['cop_name'],
+        \   'text': l:error['message'],
+        \   'type': ale_linters#eruby#ruumba#GetType(l:error['severity']),
+        \})
+    endfor
+
+    return l:output
+endfunction
+
+function! ale_linters#eruby#ruumba#GetType(severity) abort
+    if a:severity is? 'convention'
+    \|| a:severity is? 'warning'
+    \|| a:severity is? 'refactor'
+        return 'W'
+    endif
+
+    return 'E'
+endfunction
+
+call ale#linter#Define('eruby', {
+\   'name': 'ruumba',
+\   'executable': {b -> ale#Var(b, 'eruby_ruumba_executable')},
+\   'command': function('ale_linters#eruby#ruumba#GetCommand'),
+\   'callback': 'ale_linters#eruby#ruumba#Handle',
+\})

ale_linters/fortran/gcc.vim

@@ -2,18 +2,10 @@
 " 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
-
+call ale#Set('fortran_gcc_use_free_form', 1)
+call ale#Set('fortran_gcc_executable', 'gcc')
 " 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
+call ale#Set('fortran_gcc_options', '-Wall')
 
 function! ale_linters#fortran#gcc#Handle(buffer, lines) abort
     " We have to match a starting line and a later ending line together,
@@ -61,26 +53,20 @@ function! ale_linters#fortran#gcc#Handle(buffer, lines) abort
     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') . ' '
-    \   . '-'
+    return '%e -S -x f95 -fsyntax-only ' . l:layout_option
+    \   . ale#Pad(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',
+\   'executable': {b -> ale#Var(b, 'fortran_gcc_executable')},
+\   'command': function('ale_linters#fortran#gcc#GetCommand'),
 \   'callback': 'ale_linters#fortran#gcc#Handle',
 \})

ale_linters/fortran/language_server.vim

@@ -0,0 +1,19 @@
+" Author: unpairedbracket ben.spiers22@gmail.com
+" Description: A language server for fortran
+
+call ale#Set('fortran_language_server_executable', 'fortls')
+call ale#Set('fortran_language_server_use_global', get(g:, 'ale_use_global_executables', 0))
+
+function! ale_linters#fortran#language_server#GetProjectRoot(buffer) abort
+    let l:fortls_file = ale#path#FindNearestFile(a:buffer, '.fortls')
+
+    return !empty(l:fortls_file) ? fnamemodify(l:fortls_file, ':h') : ''
+endfunction
+
+call ale#linter#Define('fortran', {
+\   'name': 'language_server',
+\   'lsp': 'stdio',
+\   'executable': {b -> ale#Var(b, 'fortran_language_server_executable')},
+\   'command': '%e',
+\   'project_root': function('ale_linters#fortran#language_server#GetProjectRoot'),
+\})

ale_linters/fuse/fusionlint.vim

@@ -1,19 +1,11 @@
 " 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
+call ale#Set('fuse_fusionlint_executable', 'fusion-lint')
+call ale#Set('fuse_fusionlint_options', '')
 
 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')
+    return '%e' . ale#Pad(ale#Var(a:buffer, 'fuse_fusionlint_options'))
     \   . ' --filename %s -i'
 endfunction
 
@@ -35,7 +27,7 @@ endfunction
 
 call ale#linter#Define('fuse', {
 \   'name': 'fusionlint',
-\   'executable_callback': 'ale_linters#fuse#fusionlint#GetExecutable',
-\   'command_callback': 'ale_linters#fuse#fusionlint#GetCommand',
+\   'executable': {b -> ale#Var(b, 'fuse_fusionlint_executable')},
+\   'command': function('ale_linters#fuse#fusionlint#GetCommand'),
 \   'callback': 'ale_linters#fuse#fusionlint#Handle',
 \})

ale_linters/gitcommit/gitlint.vim

@@ -1,11 +1,9 @@
 " Author: Nick Yamane <nick.diego@gmail.com>
 " Description: gitlint for git commit message files
 
-let g:ale_gitcommit_gitlint_executable =
-\   get(g:, 'ale_gitcommit_gitlint_executable', 'gitlint')
-let g:ale_gitcommit_gitlint_options = get(g:, 'ale_gitcommit_gitlint_options', '')
-let g:ale_gitcommit_gitlint_use_global = get(g:, 'ale_gitcommit_gitlint_use_global', get(g:, 'ale_use_global_executables', 0))
-
+call ale#Set('gitcommit_gitlint_executable', 'gitlint')
+call ale#Set('gitcommit_gitlint_options', '')
+call ale#Set('gitcommit_gitlint_use_global', get(g:, 'ale_use_global_executables', 0))
 
 function! ale_linters#gitcommit#gitlint#GetExecutable(buffer) abort
     return ale#python#FindExecutable(a:buffer, 'gitcommit_gitlint', ['gitlint'])
@@ -13,12 +11,9 @@ endfunction
 
 function! ale_linters#gitcommit#gitlint#GetCommand(buffer) abort
     let l:options = ale#Var(a:buffer, 'gitcommit_gitlint_options')
-    let l:executable = ale_linters#gitcommit#gitlint#GetExecutable(a:buffer)
-    return ale#Escape(l:executable)
-    \   . (!empty(l:options) ? ' ' . l:options : '')
-    \   . ' lint'
-endfunction
 
+    return '%e' . ale#Pad(l:options) . ' lint'
+endfunction
 
 function! ale_linters#gitcommit#gitlint#Handle(buffer, lines) abort
     " Matches patterns line the following:
@@ -28,8 +23,10 @@ function! ale_linters#gitcommit#gitlint#Handle(buffer, lines) abort
     for l:match in ale#util#GetMatches(a:lines, l:pattern)
         let l:code = l:match[2]
 
-        if l:code is# 'T2' && !ale#Var(a:buffer, 'warn_about_trailing_whitespace')
-            continue
+        if !ale#Var(a:buffer, 'warn_about_trailing_whitespace')
+            if l:code is# 'T2' || l:code is# 'B2'
+                continue
+            endif
         endif
 
         let l:item = {
@@ -45,12 +42,10 @@ function! ale_linters#gitcommit#gitlint#Handle(buffer, lines) abort
     return l:output
 endfunction
 
-
 call ale#linter#Define('gitcommit', {
 \   'name': 'gitlint',
 \   'output_stream': 'stderr',
-\   'executable_callback': 'ale_linters#gitcommit#gitlint#GetExecutable',
-\   'command_callback': 'ale_linters#gitcommit#gitlint#GetCommand',
+\   'executable': function('ale_linters#gitcommit#gitlint#GetExecutable'),
+\   'command': function('ale_linters#gitcommit#gitlint#GetCommand'),
 \   'callback': 'ale_linters#gitcommit#gitlint#Handle',
 \})
-

ale_linters/glsl/glslang.vim

@@ -4,19 +4,13 @@
 " TODO: Once https://github.com/KhronosGroup/glslang/pull/1047 is accepted,
 " we can use stdin.
 
-let g:ale_glsl_glslang_executable =
-\ get(g:, 'ale_glsl_glslang_executable', 'glslangValidator')
-
-let g:ale_glsl_glslang_options = get(g:, 'ale_glsl_glslang_options', '')
-
-function! ale_linters#glsl#glslang#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'glsl_glslang_executable')
-endfunction
+call ale#Set('glsl_glslang_executable', 'glslangValidator')
+call ale#Set('glsl_glslang_options', '')
 
 function! ale_linters#glsl#glslang#GetCommand(buffer) abort
-    return ale_linters#glsl#glslang#GetExecutable(a:buffer)
-    \   . ' ' . ale#Var(a:buffer, 'glsl_glslang_options')
-    \   . ' ' . '-C %t'
+    return '%e'
+    \   . ale#Pad(ale#Var(a:buffer, 'glsl_glslang_options'))
+    \   . ' -C %t'
 endfunction
 
 function! ale_linters#glsl#glslang#Handle(buffer, lines) abort
@@ -40,7 +34,7 @@ endfunction
 
 call ale#linter#Define('glsl', {
 \   'name': 'glslang',
-\   'executable_callback': 'ale_linters#glsl#glslang#GetExecutable',
-\   'command_callback': 'ale_linters#glsl#glslang#GetCommand',
+\   'executable': {b -> ale#Var(b, 'glsl_glslang_executable')},
+\   'command': function('ale_linters#glsl#glslang#GetCommand'),
 \   'callback': 'ale_linters#glsl#glslang#Handle',
 \})

ale_linters/glsl/glslls.vim

@@ -4,18 +4,15 @@
 call ale#Set('glsl_glslls_executable', 'glslls')
 call ale#Set('glsl_glslls_logfile', '')
 
-function! ale_linters#glsl#glslls#GetExecutable(buffer) abort
-    return ale#Var(a:buffer, 'glsl_glslls_executable')
-endfunction
-
 function! ale_linters#glsl#glslls#GetCommand(buffer) abort
-    let l:executable = ale_linters#glsl#glslls#GetExecutable(a:buffer)
     let l:logfile = ale#Var(a:buffer, 'glsl_glslls_logfile')
     let l:logfile_args = ''
+
     if l:logfile isnot# ''
         let l:logfile_args = ' --verbose -l ' . l:logfile
     endif
-    return ale#Escape(l:executable) . l:logfile_args . ' --stdin'
+
+    return '%e' . l:logfile_args . ' --stdin'
 endfunction
 
 function! ale_linters#glsl#glslls#GetProjectRoot(buffer) abort
@@ -27,8 +24,7 @@ endfunction
 call ale#linter#Define('glsl', {
 \   'name': 'glslls',
 \   'lsp': 'stdio',
-\   'executable_callback': 'ale_linters#glsl#glslls#GetExecutable',
-\   'command_callback': 'ale_linters#glsl#glslls#GetCommand',
-\   'language': 'glsl',
-\   'project_root_callback': 'ale_linters#glsl#glslls#GetProjectRoot',
+\   'executable': {b -> ale#Var(b, 'glsl_glslls_executable')},
+\   'command': function('ale_linters#glsl#glslls#GetCommand'),
+\   'project_root': function('ale_linters#glsl#glslls#GetProjectRoot'),
 \})

ale_linters/go/bingo.vim

@@ -0,0 +1,29 @@
+" Author: Jerko Steiner <https://github.com/jeremija>
+" Description: https://github.com/saibing/bingo
+
+call ale#Set('go_bingo_executable', 'bingo')
+call ale#Set('go_bingo_options', '--mode stdio')
+
+function! ale_linters#go#bingo#GetCommand(buffer) abort
+    return '%e' . ale#Pad(ale#Var(a:buffer, 'go_bingo_options'))
+endfunction
+
+function! ale_linters#go#bingo#FindProjectRoot(buffer) abort
+    let l:project_root = ale#path#FindNearestFile(a:buffer, 'go.mod')
+    let l:mods = ':h'
+
+    if empty(l:project_root)
+        let l:project_root = ale#path#FindNearestDirectory(a:buffer, '.git')
+        let l:mods = ':h:h'
+    endif
+
+    return !empty(l:project_root) ? fnamemodify(l:project_root, l:mods) : ''
+endfunction
+
+call ale#linter#Define('go', {
+\   'name': 'bingo',
+\   'lsp': 'stdio',
+\   'executable': {b -> ale#Var(b, 'go_bingo_executable')},
+\   'command': function('ale_linters#go#bingo#GetCommand'),
+\   'project_root': function('ale_linters#go#bingo#FindProjectRoot'),
+\})

ale_linters/go/gobuild.vim

@@ -3,38 +3,15 @@
 " Description: go build for Go files
 " inspired by work from dzhou121 <dzhou121@gmail.com>
 
+call ale#Set('go_go_executable', 'go')
 call ale#Set('go_gobuild_options', '')
 
-function! ale_linters#go#gobuild#ResetEnv() abort
-    unlet! s:go_env
-endfunction
-
-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
+function! ale_linters#go#gobuild#GetCommand(buffer) abort
     let l:options = ale#Var(a:buffer, 'go_gobuild_options')
 
-    if !exists('s:go_env')
-        let s:go_env = {
-        \   'GOPATH': a:goenv_output[0],
-        \   'GOROOT': a:goenv_output[1],
-        \}
-    endif
-
-    let l:gopath_env_command = has('win32')
-    \   ? 'set GOPATH=' . ale#Escape(s:go_env.GOPATH) . ' && '
-    \   : 'GOPATH=' . ale#Escape(s:go_env.GOPATH) . ' '
-
     " Run go test in local directory with relative path
-    return l:gopath_env_command
-    \   . ale#path#BufferCdString(a:buffer)
-    \   . 'go test'
+    return ale#path#BufferCdString(a:buffer)
+    \   . ale#Var(a:buffer, 'go_go_executable') . ' test'
     \   . (!empty(l:options) ? ' ' . l:options : '')
     \   . ' -c -o /dev/null ./'
 endfunction
@@ -45,7 +22,6 @@ function! ale_linters#go#gobuild#GetMatches(lines) abort
     " 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+)?:? (.+)$'
 
@@ -70,12 +46,11 @@ function! ale_linters#go#gobuild#Handler(buffer, lines) abort
 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'},
-\   ],
+\   'name': 'gobuild',
+\   'aliases': ['go build'],
+\   'executable': {b -> ale#Var(b, 'go_go_executable')},
+\   'command': function('ale_linters#go#gobuild#GetCommand'),
+\   'output_stream': 'stderr',
 \   'callback': 'ale_linters#go#gobuild#Handler',
 \   'lint_file': 1,
 \})

ale_linters/go/golangci_lint.vim

@@ -0,0 +1,56 @@
+" Author: Sascha Grunert <mail@saschagrunert.de>
+" Description: Adds support of golangci-lint
+
+call ale#Set('go_golangci_lint_options', '--enable-all')
+call ale#Set('go_golangci_lint_executable', 'golangci-lint')
+call ale#Set('go_golangci_lint_package', 0)
+
+function! ale_linters#go#golangci_lint#GetCommand(buffer) abort
+    let l:filename = expand('#' . a:buffer . ':t')
+    let l:options = ale#Var(a:buffer, 'go_golangci_lint_options')
+    let l:lint_package = ale#Var(a:buffer, 'go_golangci_lint_package')
+
+    if l:lint_package
+        return ale#path#BufferCdString(a:buffer)
+        \   . '%e run '
+        \   .  l:options
+    endif
+
+    return ale#path#BufferCdString(a:buffer)
+    \   . '%e run '
+    \   . ale#Escape(l:filename)
+    \   . ' ' . l:options
+endfunction
+
+function! ale_linters#go#golangci_lint#GetMatches(lines) abort
+    let l:pattern = '\v^([a-zA-Z]?:?[^:]+):(\d+):?(\d+)?:?:?:?\s\*?(.+)$'
+
+    return ale#util#GetMatches(a:lines, l:pattern)
+endfunction
+
+function! ale_linters#go#golangci_lint#Handler(buffer, lines) abort
+    let l:dir = expand('#' . a:buffer . ':p:h')
+    let l:output = []
+
+    for l:match in ale_linters#go#golangci_lint#GetMatches(a:lines)
+        " l:match[1] will already be an absolute path, output from
+        " golangci_lint
+        call add(l:output, {
+        \   'filename': ale#path#GetAbsPath(l:dir, l:match[1]),
+        \   'lnum': l:match[2] + 0,
+        \   'col': l:match[3] + 0,
+        \   'type': 'E',
+        \   'text': l:match[4],
+        \})
+    endfor
+
+    return l:output
+endfunction
+
+call ale#linter#Define('go', {
+\   'name': 'golangci-lint',
+\   'executable': {b -> ale#Var(b, 'go_golangci_lint_executable')},
+\   'command': function('ale_linters#go#golangci_lint#GetCommand'),
+\   'callback': 'ale_linters#go#golangci_lint#Handler',
+\   'lint_file': 1,
+\})

ale_linters/go/golint.vim

@@ -1,10 +1,21 @@
 " Author: neersighted <bjorn@neersighted.com>
 " Description: golint for Go files
 
+call ale#Set('go_golint_executable', 'golint')
+call ale#Set('go_golint_options', '')
+
+function! ale_linters#go#golint#GetCommand(buffer) abort
+    let l:options = ale#Var(a:buffer, 'go_golint_options')
+
+    return '%e'
+    \   . (!empty(l:options) ? ' ' . l:options : '')
+    \   . ' %t'
+endfunction
+
 call ale#linter#Define('go', {
 \   'name': 'golint',
 \   'output_stream': 'both',
-\   'executable': 'golint',
-\   'command': 'golint %t',
+\   'executable': {b -> ale#Var(b, 'go_golint_executable')},
+\   'command': function('ale_linters#go#golint#GetCommand'),
 \   'callback': 'ale#handlers#unix#HandleAsWarning',
 \})

ale_linters/go/gometalinter.vim

@@ -5,12 +5,7 @@ call ale#Set('go_gometalinter_options', '')
 call ale#Set('go_gometalinter_executable', 'gometalinter')
 call ale#Set('go_gometalinter_lint_package', 0)
 
-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 . ':t')
     let l:options = ale#Var(a:buffer, 'go_gometalinter_options')
     let l:lint_package = ale#Var(a:buffer, 'go_gometalinter_lint_package')
@@ -19,12 +14,12 @@ function! ale_linters#go#gometalinter#GetCommand(buffer) abort
     " be calculated to absolute paths in the Handler
     if l:lint_package
         return ale#path#BufferCdString(a:buffer)
-        \   . ale#Escape(l:executable)
+        \   . '%e'
         \   . (!empty(l:options) ? ' ' . l:options : '') . ' .'
     endif
 
     return ale#path#BufferCdString(a:buffer)
-    \   . ale#Escape(l:executable)
+    \   . '%e'
     \   . ' --include=' . ale#Escape(ale#util#EscapePCRE(l:filename))
     \   . (!empty(l:options) ? ' ' . l:options : '') . ' .'
 endfunction
@@ -55,8 +50,8 @@ endfunction
 
 call ale#linter#Define('go', {
 \   'name': 'gometalinter',
-\   'executable_callback': 'ale_linters#go#gometalinter#GetExecutable',
-\   'command_callback': 'ale_linters#go#gometalinter#GetCommand',
+\   'executable': {b -> ale#Var(b, 'go_gometalinter_executable')},
+\   'command': function('ale_linters#go#gometalinter#GetCommand'),
 \   'callback': 'ale_linters#go#gometalinter#Handler',
 \   'lint_file': 1,
 \})

ale_linters/go/gosimple.vim

@@ -8,7 +8,7 @@ endfunction
 call ale#linter#Define('go', {
 \   'name': 'gosimple',
 \   'executable': 'gosimple',
-\   'command_callback': 'ale_linters#go#gosimple#GetCommand',
+\   'command': function('ale_linters#go#gosimple#GetCommand'),
 \   'callback': 'ale#handlers#go#Handler',
 \   'output_stream': 'both',
 \   'lint_file': 1,

ale_linters/go/gotype.vim

@@ -3,18 +3,17 @@
 
 function! ale_linters#go#gotype#GetCommand(buffer) abort
     if expand('#' . a:buffer . ':p') =~# '_test\.go$'
-        return
+        return ''
     endif
 
-
-    return ale#path#BufferCdString(a:buffer) . ' gotype .'
+    return ale#path#BufferCdString(a:buffer) . ' gotype -e .'
 endfunction
 
 call ale#linter#Define('go', {
 \   'name': 'gotype',
 \   'output_stream': 'stderr',
 \   'executable': 'gotype',
-\   'command_callback': 'ale_linters#go#gotype#GetCommand',
+\   'command': function('ale_linters#go#gotype#GetCommand'),
 \   'callback': 'ale#handlers#go#Handler',
 \   'lint_file': 1,
 \})

ale_linters/go/govet.vim

@@ -4,15 +4,24 @@
 " Author: John Eikenberry <jae@zhar.net>
 " Description: updated to work with go1.10
 
+call ale#Set('go_go_executable', 'go')
+call ale#Set('go_govet_options', '')
+
 function! ale_linters#go#govet#GetCommand(buffer) abort
-    return ale#path#BufferCdString(a:buffer) . ' go vet .'
+    let l:options = ale#Var(a:buffer, 'go_govet_options')
+
+    return ale#path#BufferCdString(a:buffer) . ' '
+    \   . ale#Var(a:buffer, 'go_go_executable') . ' vet '
+    \   . (!empty(l:options) ? ' ' . l:options : '')
+    \   . ' .'
 endfunction
 
 call ale#linter#Define('go', {
-\   'name': 'go vet',
+\   'name': 'govet',
+\   'aliases': ['go vet'],
 \   'output_stream': 'stderr',
-\   'executable': 'go',
-\   'command_callback': 'ale_linters#go#govet#GetCommand',
+\   'executable': {b -> ale#Var(b, 'go_go_executable')},
+\   'command': function('ale_linters#go#govet#GetCommand'),
 \   'callback': 'ale#handlers#go#Handler',
 \   'lint_file': 1,
 \})

ale_linters/go/langserver.vim

@@ -0,0 +1,28 @@
+" Author: Horacio Sanson <https://github.com/hsanson>
+" Description: Support for go-langserver https://github.com/sourcegraph/go-langserver
+
+call ale#Set('go_langserver_executable', 'go-langserver')
+call ale#Set('go_langserver_options', '')
+
+function! ale_linters#go#langserver#GetCommand(buffer) abort
+    let l:executable = [ale#Escape(ale#Var(a:buffer, 'go_langserver_executable'))]
+    let l:options = ale#Var(a:buffer, 'go_langserver_options')
+    let l:options = substitute(l:options, '-gocodecompletion', '', 'g')
+    let l:options = filter(split(l:options, ' '), 'empty(v:val) != 1')
+
+    if ale#Var(a:buffer, 'completion_enabled')
+        call add(l:options, '-gocodecompletion')
+    endif
+
+    let l:options = uniq(sort(l:options))
+
+    return join(extend(l:executable, l:options), ' ')
+endfunction
+
+call ale#linter#Define('go', {
+\   'name': 'golangserver',
+\   'lsp': 'stdio',
+\   'executable': {b -> ale#Var(b, 'go_langserver_executable')},
+\   'command': function('ale_linters#go#langserver#GetCommand'),
+\   'project_root': function('ale#go#FindProjectRoot'),
+\})

ale_linters/go/staticcheck.vim

@@ -26,7 +26,7 @@ endfunction
 call ale#linter#Define('go', {
 \   'name': 'staticcheck',
 \   'executable': 'staticcheck',
-\   'command_callback': 'ale_linters#go#staticcheck#GetCommand',
+\   'command': function('ale_linters#go#staticcheck#GetCommand'),
 \   'callback': 'ale#handlers#go#Handler',
 \   'output_stream': 'both',
 \   'lint_file': 1,

ale_linters/graphql/eslint.vim

@@ -3,7 +3,7 @@
 
 call ale#linter#Define('graphql', {
 \   'name': 'eslint',
-\   'executable_callback': 'ale#handlers#eslint#GetExecutable',
-\   'command_callback': 'ale#handlers#eslint#GetCommand',
+\   'executable': function('ale#handlers#eslint#GetExecutable'),
+\   'command': function('ale#handlers#eslint#GetCommand'),
 \   'callback': 'ale#handlers#eslint#Handle',
 \})

ale_linters/graphql/gqlint.vim

@@ -1,9 +1,15 @@
 " Author: Michiel Westerbeek <happylinks@gmail.com>
 " Description: Linter for GraphQL Schemas
 
+function! ale_linters#graphql#gqlint#GetCommand(buffer) abort
+    return ale#path#BufferCdString(a:buffer)
+    \   . 'gqlint'
+    \   . ' --reporter=simple %t'
+endfunction
+
 call ale#linter#Define('graphql', {
 \   'name': 'gqlint',
 \   'executable': 'gqlint',
-\   'command': 'gqlint --reporter=simple %t',
+\   'command': function('ale_linters#graphql#gqlint#GetCommand'),
 \   'callback': 'ale#handlers#unix#HandleAsWarning',
 \})

ale_linters/hack/hack.vim

@@ -0,0 +1,22 @@
+" Author: Fred Emmott <fe@fb.com>
+" Description: Hack support via `hack lsp`
+
+call ale#Set('hack_hack_executable', 'hh_client')
+
+function! ale_linters#hack#hack#GetProjectRoot(buffer) abort
+    let l:hhconfig = ale#path#FindNearestFile(a:buffer, '.hhconfig')
+
+    return !empty(l:hhconfig) ? fnamemodify(l:hhconfig, ':h') : ''
+endfunction
+
+function! ale_linters#hack#hack#GetExecutable(buffer) abort
+    return ale#Var(a:buffer, 'hack_hack_executable')
+endfunction
+
+call ale#linter#Define('hack', {
+\   'name': 'hack',
+\   'lsp': 'stdio',
+\   'executable': function('ale_linters#hack#hack#GetExecutable'),
+\   'command': '%e lsp --from vim-ale',
+\   'project_root': function('ale_linters#hack#hack#GetProjectRoot'),
+\})

ale_linters/hack/hhast.vim

@@ -0,0 +1,40 @@
+" Author: Fred Emmott <fe@fb.com>
+" Description: Hack support via `hhast lsp`
+
+call ale#Set('hack_hhast_executable', 'vendor/bin/hhast-lint')
+
+function! ale_linters#hack#hhast#GetProjectRoot(buffer) abort
+    " Find the hack root, then figure out if it's also an HHAST root.
+    " Don't try to use lint configurations from vendor/foo/bar/hhast-lint.json
+    let l:hhconfig = ale#path#FindNearestFile(a:buffer, '.hhconfig')
+
+    if empty(l:hhconfig)
+        return ''
+    endif
+
+    let l:root = fnamemodify(l:hhconfig, ':h')
+    let l:hhast_config = findfile('hhast-lint.json', l:root)
+
+    return !empty(l:hhast_config) ? l:root : ''
+endfunction
+
+function! ale_linters#hack#hhast#GetExecutable(buffer) abort
+    let l:root = ale_linters#hack#hhast#GetProjectRoot(a:buffer)
+    let l:relative = ale#Var(a:buffer, 'hack_hhast_executable')
+    let l:absolute = findfile(l:relative, l:root)
+
+    return !empty(l:absolute) ? l:absolute : ''
+endfunction
+
+function! ale_linters#hack#hhast#GetInitializationOptions(buffer) abort
+    return {'lintMode': 'open-files'}
+endfunction
+
+call ale#linter#Define('hack', {
+\   'name': 'hhast',
+\   'lsp': 'stdio',
+\   'executable': function('ale_linters#hack#hhast#GetExecutable'),
+\   'command': '%e --mode lsp --from vim-ale',
+\   'project_root': function('ale_linters#hack#hhast#GetProjectRoot'),
+\   'initialization_options': function('ale_linters#hack#hhast#GetInitializationOptions'),
+\})

ale_linters/haml/hamllint.vim

@@ -1,6 +1,12 @@
 " Author: Patrick Lewis - https://github.com/patricklewis, thenoseman - https://github.com/thenoseman
 " Description: haml-lint for Haml files
 
+call ale#Set('haml_hamllint_executable', 'haml-lint')
+
+function! ale_linters#haml#hamllint#GetExecutable(buffer) abort
+    return ale#Var(a:buffer, 'haml_hamllint_executable')
+endfunction
+
 function! ale_linters#haml#hamllint#GetCommand(buffer) abort
     let l:prefix = ''
 
@@ -13,7 +19,7 @@ function! ale_linters#haml#hamllint#GetCommand(buffer) abort
     " See https://github.com/brigade/haml-lint/blob/master/lib/haml_lint/linter/rubocop.rb#L89
     "     HamlLint::Linter::RuboCop#rubocop_flags
     if !empty(l:rubocop_config_file_path)
-        if ale#Has('win32')
+        if has('win32')
             let l:prefix = 'set HAML_LINT_RUBOCOP_CONF=' . ale#Escape(l:rubocop_config_file_path) . ' &&'
         else
             let l:prefix = 'HAML_LINT_RUBOCOP_CONF=' . ale#Escape(l:rubocop_config_file_path)
@@ -21,7 +27,7 @@ function! ale_linters#haml#hamllint#GetCommand(buffer) abort
     endif
 
     return (!empty(l:prefix) ? l:prefix . ' ' : '')
-    \   . 'haml-lint'
+    \   . ale_linters#haml#hamllint#GetExecutable(a:buffer)
     \   . (!empty(l:hamllint_config_file_path) ? ' --config ' . ale#Escape(l:hamllint_config_file_path) : '')
     \   . ' %t'
 endfunction
@@ -45,7 +51,7 @@ endfunction
 
 call ale#linter#Define('haml', {
 \   'name': 'hamllint',
-\   'executable': 'haml-lint',
-\   'command_callback': 'ale_linters#haml#hamllint#GetCommand',
+\   'executable': function('ale_linters#haml#hamllint#GetExecutable'),
+\   'command': function('ale_linters#haml#hamllint#GetCommand'),
 \   'callback': 'ale_linters#haml#hamllint#Handle'
 \})

ale_linters/handlebars/embertemplatelint.vim

@@ -4,17 +4,6 @@
 call ale#Set('handlebars_embertemplatelint_executable', 'ember-template-lint')
 call ale#Set('handlebars_embertemplatelint_use_global', get(g:, 'ale_use_global_executables', 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, {})
@@ -42,7 +31,9 @@ endfunction
 
 call ale#linter#Define('handlebars', {
 \   'name': 'ember-template-lint',
-\   'executable_callback': 'ale_linters#handlebars#embertemplatelint#GetExecutable',
-\   'command_callback': 'ale_linters#handlebars#embertemplatelint#GetCommand',
+\   'executable': {b -> ale#node#FindExecutable(b, 'handlebars_embertemplatelint', [
+\       'node_modules/.bin/ember-template-lint',
+\   ])},
+\   'command': '%e --json %t',
 \   'callback': 'ale_linters#handlebars#embertemplatelint#Handle',
 \})

ale_linters/haskell/cabal_ghc.vim

@@ -0,0 +1,19 @@
+" Author: Eric Wolf <ericwolf42@gmail.com>
+" Description: ghc for Haskell files called with cabal exec
+
+call ale#Set('haskell_cabal_ghc_options', '-fno-code -v0')
+
+function! ale_linters#haskell#cabal_ghc#GetCommand(buffer) abort
+    return 'cabal exec -- ghc '
+    \   . ale#Var(a:buffer, 'haskell_cabal_ghc_options')
+    \   . ' %t'
+endfunction
+
+call ale#linter#Define('haskell', {
+\   'name': 'cabal_ghc',
+\   'aliases': ['cabal-ghc'],
+\   'output_stream': 'stderr',
+\   'executable': 'cabal',
+\   'command': function('ale_linters#haskell#cabal_ghc#GetCommand'),
+\   'callback': 'ale#handlers#haskell#HandleGHCFormat',
+\})

ale_linters/haskell/ghc-mod.vim

@@ -1,16 +0,0 @@
-" 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',
-\})

ale_linters/haskell/ghc.vim

@@ -13,6 +13,6 @@ call ale#linter#Define('haskell', {
 \   'name': 'ghc',
 \   'output_stream': 'stderr',
 \   'executable': 'ghc',
-\   'command_callback': 'ale_linters#haskell#ghc#GetCommand',
+\   'command': function('ale_linters#haskell#ghc#GetCommand'),
 \   'callback': 'ale#handlers#haskell#HandleGHCFormat',
 \})

ale_linters/haskell/ghc_mod.vim

@@ -0,0 +1,19 @@
+" Author: wizzup <wizzup@gmail.com>
+" Description: ghc-mod for Haskell files
+
+call ale#Set('haskell_ghc_mod_executable', 'ghc-mod')
+
+function! ale_linters#haskell#ghc_mod#GetCommand (buffer) abort
+    let l:executable = ale#Var(a:buffer, 'haskell_ghc_mod_executable')
+
+    return ale#handlers#haskell_stack#EscapeExecutable(l:executable, 'ghc-mod')
+    \   . ' --map-file %s=%t check %s'
+endfunction
+
+call ale#linter#Define('haskell', {
+\   'name': 'ghc_mod',
+\   'aliases': ['ghc-mod'],
+\   'executable': {b -> ale#Var(b, 'haskell_ghc_mod_executable')},
+\   'command': function('ale_linters#haskell#ghc_mod#GetCommand'),
+\   'callback': 'ale#handlers#haskell#HandleGHCFormat',
+\})

ale_linters/haskell/hdevtools.vim

@@ -4,19 +4,17 @@
 call ale#Set('haskell_hdevtools_executable', 'hdevtools')
 call ale#Set('haskell_hdevtools_options', get(g:, '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'
+    let l:executable = ale#Var(a:buffer, 'haskell_hdevtools_executable')
+
+    return ale#handlers#haskell_stack#EscapeExecutable(l:executable, 'hdevtools')
+    \ . ' check' . ale#Pad(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',
+\   'executable': {b -> ale#Var(b, 'haskell_hdevtools_executable')},
+\   'command': function('ale_linters#haskell#hdevtools#GetCommand'),
 \   'callback': 'ale#handlers#haskell#HandleGHCFormat',
 \})