Merge pull request #1900 from McSwaggens/master

Fixed NASM linter from outputting junk file

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

@@ -23,13 +23,14 @@ 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. Be specific. -->
+<!-- Describe what went wrong here. -->
-
-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
 
@@ -37,9 +38,3 @@ Are you having trouble configuring ALE? Try asking for help on [Stack Exchange](
 
 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

@@ -2,12 +2,7 @@
 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`.
+* Read the documentation that comes with ALE with `:help ale-development`.
 
 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

@@ -1,10 +1,6 @@
 !.editorconfig
 *.obj
-# Ignore all hidden files everywhere.
-# Use `git add -f` to add hidden files.
 .*
-__pycache__
-*.pyc
 /doc/tags
 /init.vim
 /test/ale-info-test-file

README.md

@@ -1,13 +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) [![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)
+# 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)
 
 
 ![ALE Logo by Mark Grealish - https://www.bhalash.com/](img/logo.jpg?raw=true)
 
-ALE (Asynchronous Lint Engine) is a plugin for providing linting (checking
+ALE (Asynchronous Lint Engine) is a plugin for providing linting in NeoVim
-syntax and semantics) in NeoVim 0.2.0+ and Vim 8 while you edit your text files,
+0.2.0+ and Vim 8 while you edit your text files, and acts as a Vim
-and acts as a Vim [Language Server Protocol](https://langserver.org/) client.
+[Language Server Protocol](https://langserver.org/) client.
 
-<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.">
+![linting example](img/example.gif?raw=true)
 
 ALE makes use of NeoVim and Vim 8 job control functions and timers to
 run linters on the contents of text buffers and return errors as
@@ -26,18 +26,14 @@ features, including:
 
 * Diagnostics (via Language Server Protocol linters)
 * Go To Definition (`:ALEGoToDefinition`)
-* Completion (`let g:ale_completion_enabled = 1` before ALE is loaded)
+* Completion (`let g:ale_completion_enabled = 1`)
 * 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)
@@ -48,12 +44,10 @@ other content at [w0rp.com](https://w0rp.com).
     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)
@@ -68,20 +62,136 @@ other content at [w0rp.com](https://w0rp.com).
     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. [How can I check Vue files with ESLint?](#faq-vue-eslint)
+    13. [Will this plugin eat all of my laptop battery power?](#faq-my-battery-is-sad)
-    14. [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 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 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)
-    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
 
-ALE supports a wide variety of languages and tools. See the
+This plugin supports the following languages and tools. All available
-[full list](supported-tools.md) in the
+tools will be run in combination, so they can be complementary.
-[Supported Languages and Tools](supported-tools.md) page.
+
+<!--
+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/), [clangd](https://clang.llvm.org/extra/clangd.html), [clangtidy](http://clang.llvm.org/extra/clang-tidy/) !!, [clang-format](https://clang.llvm.org/docs/ClangFormat.html), [cquery](https://github.com/cquery-project/cquery), [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/), [language_server](https://github.com/hansec/fortran-language-server) |
+| 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) |
+| Hack | [hack](http://hacklang.org/), [hackfmt](https://github.com/facebook/hhvm/tree/master/hphp/hack/hackfmt), [hhast](https://github.com/hhvm/hhast) (disabled by default; see `:help ale-integration-hack`) |
+| 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/), [cabal-ghc](https://www.haskell.org/cabal/), [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), [hie](https://github.com/haskell/haskell-ide-engine) |
+| 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) !!, [languageserver](https://github.com/fwcd/KotlinLanguageServer) 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 | [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 | [languageserver](https://github.com/lingua-pupuli/puppet-editor-services), [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/) !!, [vulture](https://github.com/jendrikseipp/vulture) !!, [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), [vls](https://github.com/vuejs/vetur/tree/master/server) |
+| 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/) |
+| YANG | [yang-lsp](https://github.com/theia-ide/yang-lsp) |
 
 <a name="usage"></a>
 
@@ -101,7 +211,7 @@ 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-integration-options` for options specified to particular linters.
+ale-linter-options` for options specified to particular linters.
 
 <a name="usage-fixing"></a>
 
@@ -121,18 +231,12 @@ 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
+You can also configure your fixers from vimrc using `g:ale_fixers`, before
-after ALE has been loaded.
+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'],
 \}
 ```
@@ -161,7 +265,6 @@ 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
 ```
 
@@ -195,24 +298,11 @@ 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.
 
-The information can be displayed in a `balloon` tooltip in Vim or GVim by
+On vim/gvim with `balloon` support you can see the information in a tooltip
-hovering your mouse over symbols. Mouse hovering is enabled by default in GVim,
+that appears under the mouse when you mouseover a symbol.
-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
@@ -296,18 +386,6 @@ 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
@@ -449,16 +527,8 @@ 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 some functions to
+function without adding any other plugins. ALE provides a function for counting
-assist in this endeavour, including:
+the number of problems for this purpose, named `ale#statusline#Count`.
-
-* `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:
@@ -480,8 +550,7 @@ endfunction
 set statusline=%{LinterStatus()}
 ```
 
-See `:help ale#statusline#Count()` or `:help ale#statusline#FirstProblem()`
+See `:help ale#statusline#Count()` for more information.
-for more information.
 
 <a name="faq-lightline"></a>
 
@@ -503,7 +572,7 @@ 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.
 
@@ -635,16 +704,16 @@ 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
@@ -652,40 +721,9 @@ 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.xiv. Will this plugin eat all of my laptop battery power?
+### 5.xiii. 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
@@ -710,7 +748,7 @@ including the option `g:ale_lint_on_enter`, and you can run ALE manually with
 
 <a name="faq-c-configuration"></a>
 
-### 5.xv. How can I configure my C or C++ project?
+### 5.xiv. 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
@@ -736,7 +774,7 @@ used for executing local vimrc files which can be shared in your project.
 
 <a name="faq-buffer-configuration"></a>
 
-### 5.xvi. How can I configure ALE differently for different buffers?
+### 5.xv. 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
@@ -772,7 +810,7 @@ Buffer-local variables for settings always override the global settings.
 
 <a name="faq-list-window-height"></a>
 
-### 5.xvii. How can I configure the height of the list in which ALE displays errors?
+### 5.xvi. 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.
 
@@ -780,13 +818,3 @@ 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

@@ -1,54 +0,0 @@
-" 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

@@ -1,12 +1,6 @@
 " 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
@@ -48,9 +42,8 @@ function! ale_linters#ansible#ansible_lint#Handle(buffer, lines) abort
 endfunction
 
 call ale#linter#Define('ansible', {
-\   'name': 'ansible_lint',
+\   'name': 'ansible',
-\   'aliases': ['ansible', 'ansible-lint'],
+\   'executable': 'ansible',
-\   'executable': function('ale_linters#ansible#ansible_lint#GetExecutable'),
+\   'command': 'ansible-lint -p %t',
-\   'command': '%e -p %t',
 \   'callback': 'ale_linters#ansible#ansible_lint#Handle',
 \})

ale_linters/apiblueprint/drafter.vim

@@ -16,12 +16,10 @@ 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
 

ale_linters/asciidoc/alex.vim

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

ale_linters/asciidoc/textlint.vim

@@ -1,9 +0,0 @@
-" 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

@@ -1,9 +0,0 @@
-" 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/asm/gcc.vim

@@ -28,7 +28,7 @@ endfunction
 call ale#linter#Define('asm', {
 \    'name': 'gcc',
 \    'output_stream': 'stderr',
-\    'executable': {b -> ale#Var(b, 'asm_gcc_executable')},
+\    'executable_callback': ale#VarFunc('asm_gcc_executable'),
-\    'command': function('ale_linters#asm#gcc#GetCommand'),
+\    'command_callback': 'ale_linters#asm#gcc#GetCommand',
 \    'callback': 'ale_linters#asm#gcc#Handle',
 \})

ale_linters/awk/gawk.vim

@@ -15,8 +15,8 @@ endfunction
 
 call ale#linter#Define('awk', {
 \   'name': 'gawk',
-\   'executable': {b -> ale#Var(b, 'awk_gawk_executable')},
+\   'executable_callback': ale#VarFunc('awk_gawk_executable'),
-\   'command': function('ale_linters#awk#gawk#GetCommand'),
+\   'command_callback': 'ale_linters#awk#gawk#GetCommand',
 \   'callback': 'ale#handlers#gawk#HandleGawkFormat',
 \   'output_stream': 'both'
 \})

ale_linters/bib/bibclean.vim

@@ -1,75 +0,0 @@
-" 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

@@ -1,14 +0,0 @@
-" 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

@@ -18,7 +18,10 @@ endfunction
 call ale#linter#Define('c', {
 \   'name': 'clang',
 \   'output_stream': 'stderr',
-\   'executable': {b -> ale#Var(b, 'c_clang_executable')},
+\   'executable_callback': ale#VarFunc('c_clang_executable'),
-\   'command': {b -> ale#c#RunMakeCommand(b, function('ale_linters#c#clang#GetCommand'))},
+\   'command_chain': [
+\       {'callback': 'ale#c#GetMakeCommand', 'output_stream': 'stdout'},
+\       {'callback': 'ale_linters#c#clang#GetCommand'}
+\   ],
 \   'callback': 'ale#handlers#gcc#HandleGCCFormatWithIncludes',
 \})

ale_linters/c/clangd.vim

@@ -6,7 +6,6 @@ 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
 
@@ -17,7 +16,7 @@ endfunction
 call ale#linter#Define('c', {
 \   'name': 'clangd',
 \   'lsp': 'stdio',
-\   'executable': {b -> ale#Var(b, 'c_clangd_executable')},
+\   'executable_callback': ale#VarFunc('c_clangd_executable'),
-\   'command': function('ale_linters#c#clangd#GetCommand'),
+\   'command_callback': 'ale_linters#c#clangd#GetCommand',
-\   'project_root': function('ale_linters#c#clangd#GetProjectRoot'),
+\   'project_root_callback': 'ale_linters#c#clangd#GetProjectRoot',
 \})

ale_linters/c/clangtidy.vim

@@ -10,15 +10,33 @@ 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! 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#path#Dirname(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 = ale#c#GetBuildDirectory(a:buffer)
+    let l:build_dir = s:GetBuildDirectory(a:buffer)
 
     " Get the extra options if we couldn't find a build directory.
     let l:options = empty(l:build_dir)
@@ -35,8 +53,8 @@ endfunction
 call ale#linter#Define('c', {
 \   'name': 'clangtidy',
 \   'output_stream': 'stdout',
-\   'executable': {b -> ale#Var(b, 'c_clangtidy_executable')},
+\   'executable_callback': ale#VarFunc('c_clangtidy_executable'),
-\   'command': function('ale_linters#c#clangtidy#GetCommand'),
+\   'command_callback': 'ale_linters#c#clangtidy#GetCommand',
 \   'callback': 'ale#handlers#gcc#HandleGCCFormat',
 \   'lint_file': 1,
 \})

ale_linters/c/cppcheck.vim

@@ -28,7 +28,7 @@ endfunction
 call ale#linter#Define('c', {
 \   'name': 'cppcheck',
 \   'output_stream': 'both',
-\   'executable': {b -> ale#Var(b, 'c_cppcheck_executable')},
+\   'executable_callback': ale#VarFunc('c_cppcheck_executable'),
-\   'command': function('ale_linters#c#cppcheck#GetCommand'),
+\   'command_callback': 'ale_linters#c#cppcheck#GetCommand',
 \   'callback': 'ale#handlers#cppcheck#HandleCppCheckFormat',
 \})

ale_linters/c/cquery.vim

@@ -6,11 +6,6 @@ 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
 
@@ -21,8 +16,8 @@ endfunction
 call ale#linter#Define('c', {
 \   'name': 'cquery',
 \   'lsp': 'stdio',
-\   'executable': {b -> ale#Var(b, 'c_cquery_executable')},
+\   'executable_callback': ale#VarFunc('c_cquery_executable'),
 \   'command': '%e',
-\   'project_root': function('ale_linters#c#cquery#GetProjectRoot'),
+\   'project_root_callback': 'ale_linters#c#cquery#GetProjectRoot',
-\   'initialization_options': function('ale_linters#c#cquery#GetInitializationOptions'),
+\   'initialization_options_callback': 'ale_linters#c#cquery#GetInitializationOptions',
 \})

ale_linters/c/flawfinder.vim

@@ -7,19 +7,19 @@ call ale#Set('c_flawfinder_minlevel', 1)
 call ale#Set('c_flawfinder_error_severity', 6)
 
 function! ale_linters#c#flawfinder#GetCommand(buffer) abort
-    " Set the minimum vulnerability level for flawfinder to bother with
+   " Set the minimum vulnerability level for flawfinder to bother with
-    let l:minlevel = ' --minlevel=' . ale#Var(a:buffer, 'c_flawfinder_minlevel')
+   let l:minlevel = ' --minlevel=' . ale#Var(a:buffer, 'c_flawfinder_minlevel')
 
-    return '%e -CDQS'
+   return '%e -CDQS'
-    \  . ale#Pad(ale#Var(a:buffer, 'c_flawfinder_options'))
+   \  . ale#Pad(ale#Var(a:buffer, 'c_flawfinder_options'))
-    \  . l:minlevel
+   \  . l:minlevel
-    \  . ' %t'
+   \  . ' %t'
 endfunction
 
 call ale#linter#Define('c', {
 \  'name': 'flawfinder',
 \  'output_stream': 'stdout',
-\  'executable': {b -> ale#Var(b, 'c_flawfinder_executable')},
+\  'executable_callback': ale#VarFunc('c_flawfinder_executable'),
-\  'command': function('ale_linters#c#flawfinder#GetCommand'),
+\  'command_callback': 'ale_linters#c#flawfinder#GetCommand',
 \  'callback': 'ale#handlers#flawfinder#HandleFlawfinderFormat',
 \})

ale_linters/c/gcc.vim

@@ -18,7 +18,10 @@ endfunction
 call ale#linter#Define('c', {
 \   'name': 'gcc',
 \   'output_stream': 'stderr',
-\   'executable': {b -> ale#Var(b, 'c_gcc_executable')},
+\   'executable_callback': ale#VarFunc('c_gcc_executable'),
-\   'command': {b -> ale#c#RunMakeCommand(b, function('ale_linters#c#gcc#GetCommand'))},
+\   'command_chain': [
+\       {'callback': 'ale#c#GetMakeCommand', 'output_stream': 'stdout'},
+\       {'callback': 'ale_linters#c#gcc#GetCommand'}
+\   ],
 \   'callback': 'ale#handlers#gcc#HandleGCCFormatWithIncludes',
 \})

ale_linters/chef/foodcritic.vim

@@ -34,8 +34,8 @@ endfunction
 
 call ale#linter#Define('chef', {
 \   'name': 'foodcritic',
-\   'executable': {b -> ale#Var(b, 'chef_foodcritic_executable')},
+\   'executable_callback': ale#VarFunc('chef_foodcritic_executable'),
-\   'command': function('ale_linters#chef#foodcritic#GetCommand'),
+\   'command_callback': 'ale_linters#chef#foodcritic#GetCommand',
 \   'callback': 'ale_linters#chef#foodcritic#Handle',
 \   'lint_file': 1,
 \})

ale_linters/clojure/joker.vim

@@ -9,11 +9,9 @@ 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,

ale_linters/cmake/cmakelint.vim

@@ -18,7 +18,7 @@ endfunction
 
 call ale#linter#Define('cmake', {
 \   'name': 'cmakelint',
-\   'executable': function('ale_linters#cmake#cmakelint#Executable'),
+\   'executable_callback': 'ale_linters#cmake#cmakelint#Executable',
-\   'command': function('ale_linters#cmake#cmakelint#Command'),
+\   'command_callback': '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': function('ale_linters#coffee#coffee#GetExecutable'),
+\   'executable_callback': 'ale_linters#coffee#coffee#GetExecutable',
-\   'command': function('ale_linters#coffee#coffee#GetCommand'),
+\   'command_callback': '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': function('ale_linters#coffee#coffeelint#GetExecutable'),
+\   'executable_callback': 'ale_linters#coffee#coffeelint#GetExecutable',
-\   'command': function('ale_linters#coffee#coffeelint#GetCommand'),
+\   'command_callback': 'ale_linters#coffee#coffeelint#GetCommand',
 \   'callback': 'ale_linters#coffee#coffeelint#Handle',
 \})

ale_linters/cpp/ccls.vim

@@ -1,14 +0,0 @@
-" 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

@@ -18,7 +18,10 @@ endfunction
 call ale#linter#Define('cpp', {
 \   'name': 'clang',
 \   'output_stream': 'stderr',
-\   'executable': {b -> ale#Var(b, 'cpp_clang_executable')},
+\   'executable_callback': ale#VarFunc('cpp_clang_executable'),
-\   'command': {b -> ale#c#RunMakeCommand(b, function('ale_linters#cpp#clang#GetCommand'))},
+\   'command_chain': [
+\       {'callback': 'ale#c#GetMakeCommand', 'output_stream': 'stdout'},
+\       {'callback': 'ale_linters#cpp#clang#GetCommand'},
+\   ],
 \   'callback': 'ale#handlers#gcc#HandleGCCFormatWithIncludes',
 \})

ale_linters/cpp/clangcheck.vim

@@ -27,8 +27,8 @@ endfunction
 call ale#linter#Define('cpp', {
 \   'name': 'clangcheck',
 \   'output_stream': 'stderr',
-\   'executable': {b -> ale#Var(b, 'cpp_clangcheck_executable')},
+\   'executable_callback': ale#VarFunc('cpp_clangcheck_executable'),
-\   'command': function('ale_linters#cpp#clangcheck#GetCommand'),
+\   'command_callback': 'ale_linters#cpp#clangcheck#GetCommand',
 \   'callback': 'ale#handlers#gcc#HandleGCCFormat',
 \   'lint_file': 1,
 \})

ale_linters/cpp/clangd.vim

@@ -1,23 +0,0 @@
-" 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

@@ -4,15 +4,33 @@
 
 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! 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#path#Dirname(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 = ale#c#GetBuildDirectory(a:buffer)
+    let l:build_dir = s:GetBuildDirectory(a:buffer)
 
     " Get the extra options if we couldn't find a build directory.
     let l:options = empty(l:build_dir)
@@ -29,8 +47,8 @@ endfunction
 call ale#linter#Define('cpp', {
 \   'name': 'clangtidy',
 \   'output_stream': 'stdout',
-\   'executable': {b -> ale#Var(b, 'cpp_clangtidy_executable')},
+\   'executable_callback': ale#VarFunc('cpp_clangtidy_executable'),
-\   'command': function('ale_linters#cpp#clangtidy#GetCommand'),
+\   'command_callback': 'ale_linters#cpp#clangtidy#GetCommand',
 \   'callback': 'ale#handlers#gcc#HandleGCCFormat',
 \   'lint_file': 1,
 \})

ale_linters/cpp/clazy.vim

@@ -1,32 +0,0 @@
-" 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

@@ -28,7 +28,7 @@ endfunction
 call ale#linter#Define('cpp', {
 \   'name': 'cppcheck',
 \   'output_stream': 'both',
-\   'executable': {b -> ale#Var(b, 'cpp_cppcheck_executable')},
+\   'executable_callback': ale#VarFunc('cpp_cppcheck_executable'),
-\   'command': function('ale_linters#cpp#cppcheck#GetCommand'),
+\   'command_callback': 'ale_linters#cpp#cppcheck#GetCommand',
 \   'callback': 'ale#handlers#cppcheck#HandleCppCheckFormat',
 \})

ale_linters/cpp/cpplint.vim

@@ -13,8 +13,8 @@ endfunction
 call ale#linter#Define('cpp', {
 \   'name': 'cpplint',
 \   'output_stream': 'stderr',
-\   'executable': {b -> ale#Var(b, 'cpp_cpplint_executable')},
+\   'executable_callback': ale#VarFunc('cpp_cpplint_executable'),
-\   'command': function('ale_linters#cpp#cpplint#GetCommand'),
+\   'command_callback': 'ale_linters#cpp#cpplint#GetCommand',
 \   'callback': 'ale#handlers#cpplint#HandleCppLintFormat',
 \   'lint_file': 1,
 \})

ale_linters/cpp/cquery.vim

@@ -7,10 +7,6 @@ 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
 
@@ -21,8 +17,8 @@ endfunction
 call ale#linter#Define('cpp', {
 \   'name': 'cquery',
 \   'lsp': 'stdio',
-\   'executable': {b -> ale#Var(b, 'cpp_cquery_executable')},
+\   'executable_callback': ale#VarFunc('cpp_cquery_executable'),
 \   'command': '%e',
-\   'project_root': function('ale_linters#cpp#cquery#GetProjectRoot'),
+\   'project_root_callback': 'ale_linters#cpp#cquery#GetProjectRoot',
-\   'initialization_options': function('ale_linters#cpp#cquery#GetInitializationOptions'),
+\   'initialization_options_callback': 'ale_linters#cpp#cquery#GetInitializationOptions',
 \})

ale_linters/cpp/flawfinder.vim

@@ -7,19 +7,19 @@ call ale#Set('cpp_flawfinder_minlevel', 1)
 call ale#Set('c_flawfinder_error_severity', 6)
 
 function! ale_linters#cpp#flawfinder#GetCommand(buffer) abort
-    " Set the minimum vulnerability level for flawfinder to bother with
+   " Set the minimum vulnerability level for flawfinder to bother with
-    let l:minlevel = ' --minlevel=' . ale#Var(a:buffer, 'cpp_flawfinder_minlevel')
+   let l:minlevel = ' --minlevel=' . ale#Var(a:buffer, 'cpp_flawfinder_minlevel')
 
-    return '%e -CDQS'
+   return '%e -CDQS'
-    \  . ale#Var(a:buffer, 'cpp_flawfinder_options')
+   \  . ale#Var(a:buffer, 'cpp_flawfinder_options')
-    \  . l:minlevel
+   \  . l:minlevel
-    \  . ' %t'
+   \  . ' %t'
 endfunction
 
 call ale#linter#Define('cpp', {
 \  'name': 'flawfinder',
 \  'output_stream': 'stdout',
-\  'executable': {b -> ale#Var(b, 'cpp_flawfinder_executable')},
+\  'executable_callback': ale#VarFunc('cpp_flawfinder_executable'),
-\  'command': function('ale_linters#cpp#flawfinder#GetCommand'),
+\  'command_callback': 'ale_linters#cpp#flawfinder#GetCommand',
 \  'callback': 'ale#handlers#flawfinder#HandleFlawfinderFormat',
 \})

ale_linters/cpp/gcc.vim

@@ -19,7 +19,10 @@ call ale#linter#Define('cpp', {
 \   'name': 'gcc',
 \   'aliases': ['g++'],
 \   'output_stream': 'stderr',
-\   'executable': {b -> ale#Var(b, 'cpp_gcc_executable')},
+\   'executable_callback': ale#VarFunc('cpp_gcc_executable'),
-\   'command': {b -> ale#c#RunMakeCommand(b, function('ale_linters#cpp#gcc#GetCommand'))},
+\   'command_chain': [
+\       {'callback': 'ale#c#GetMakeCommand', 'output_stream': 'stdout'},
+\       {'callback': 'ale_linters#cpp#gcc#GetCommand'},
+\   ],
 \   'callback': 'ale#handlers#gcc#HandleGCCFormatWithIncludes',
 \})

ale_linters/crystal/ameba.vim

@@ -1,57 +0,0 @@
-" 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': function('ale_linters#crystal#crystal#GetCommand'),
+\   'command_callback': 'ale_linters#crystal#crystal#GetCommand',
 \   'callback': 'ale_linters#crystal#crystal#Handle',
 \})

ale_linters/cs/mcs.vim

@@ -32,6 +32,6 @@ call ale#linter#Define('cs',{
 \   'name': 'mcs',
 \   'output_stream': 'stderr',
 \   'executable': 'mcs',
-\   'command': function('ale_linters#cs#mcs#GetCommand'),
+\   'command_callback': 'ale_linters#cs#mcs#GetCommand',
 \   'callback': 'ale_linters#cs#mcs#Handle',
 \})

ale_linters/cs/mcsc.vim

@@ -30,7 +30,7 @@ function! ale_linters#cs#mcsc#GetCommand(buffer) abort
 
     " register temporary module target file with ale
     " register temporary module target file with ALE.
-    let l:out = ale#command#CreateFile(a:buffer)
+    let l:out = ale#engine#CreateFile(a:buffer)
 
     " The code is compiled as a module and the output is redirected to a
     " temporary file.
@@ -75,7 +75,7 @@ call ale#linter#Define('cs',{
 \   'name': 'mcsc',
 \   'output_stream': 'stderr',
 \   'executable': 'mcs',
-\   'command': function('ale_linters#cs#mcsc#GetCommand'),
+\   'command_callback': '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': function('ale_linters#css#csslint#GetCommand'),
+\   'command_callback': 'ale_linters#css#csslint#GetCommand',
 \   'callback': 'ale#handlers#css#HandleCSSLintFormat',
 \})

ale_linters/css/stylelint.vim

@@ -11,9 +11,9 @@ endfunction
 
 call ale#linter#Define('css', {
 \   'name': 'stylelint',
-\   'executable': {b -> ale#node#FindExecutable(b, 'css_stylelint', [
+\   'executable_callback': ale#node#FindExecutableFunc('css_stylelint', [
 \       'node_modules/.bin/stylelint',
-\   ])},
+\   ]),
-\   'command': function('ale_linters#css#stylelint#GetCommand'),
+\   'command_callback': 'ale_linters#css#stylelint#GetCommand',
 \   'callback': 'ale#handlers#css#HandleStyleLintFormat',
 \})

ale_linters/cucumber/cucumber.vim

@@ -22,7 +22,6 @@ 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'
@@ -41,6 +40,6 @@ endfunction
 call ale#linter#Define('cucumber', {
 \   'name': 'cucumber',
 \   'executable': 'cucumber',
-\   'command': function('ale_linters#cucumber#cucumber#GetCommand'),
+\   'command_callback': 'ale_linters#cucumber#cucumber#GetCommand',
 \   'callback': 'ale_linters#cucumber#cucumber#Handle'
 \})

ale_linters/cuda/nvcc.vim

@@ -7,7 +7,8 @@ call ale#Set('cuda_nvcc_options', '-std=c++11')
 function! ale_linters#cuda#nvcc#GetCommand(buffer) abort
     " Unused: use ale#util#nul_file
     " let l:output_file = ale#util#Tempname() . '.ii'
-    " call ale#command#ManageFile(a:buffer, l:output_file)
+    " call ale#engine#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'))
@@ -22,6 +23,7 @@ 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',
@@ -42,8 +44,8 @@ endfunction
 call ale#linter#Define('cuda', {
 \   'name': 'nvcc',
 \   'output_stream': 'stderr',
-\   'executable': {b -> ale#Var(b, 'cuda_nvcc_executable')},
+\   'executable_callback': ale#VarFunc('cuda_nvcc_executable'),
-\   'command': function('ale_linters#cuda#nvcc#GetCommand'),
+\   'command_callback': 'ale_linters#cuda#nvcc#GetCommand',
 \   'callback': 'ale_linters#cuda#nvcc#HandleNVCCFormat',
 \   'lint_file': 1,
 \})

ale_linters/cypher/cypher_lint.vim

@@ -1,26 +0,0 @@
-" 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

@@ -1,22 +0,0 @@
-" 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

@@ -1,14 +1,28 @@
 " Author: w0rp <devw0rp@gmail.com>
 " Description: "dmd for D files"
 
-function! ale_linters#d#dmd#GetDUBCommand(buffer) abort
+function! s:FindDUBConfig(buffer) abort
+    " Find a DUB configuration file in ancestor paths.
+    " The most DUB-specific names will be tried first.
+    for l:possible_filename in ['dub.sdl', 'dub.json', 'package.json']
+        let l:dub_file = ale#path#FindNearestFile(a:buffer, l:possible_filename)
+
+        if !empty(l:dub_file)
+            return l:dub_file
+        endif
+    endfor
+
+    return ''
+endfunction
+
+function! ale_linters#d#dmd#DUBCommand(buffer) abort
     " If we can't run dub, then skip this command.
     if !executable('dub')
         " Returning an empty string skips to the DMD command.
         return ''
     endif
 
-    let l:dub_file = ale#d#FindDUBConfig(a:buffer)
+    let l:dub_file = s:FindDUBConfig(a:buffer)
 
     if empty(l:dub_file)
         return ''
@@ -21,18 +35,7 @@ function! ale_linters#d#dmd#GetDUBCommand(buffer) abort
     \   . ' && dub describe --import-paths'
 endfunction
 
-function! ale_linters#d#dmd#RunDUBCommand(buffer) abort
+function! ale_linters#d#dmd#DMDCommand(buffer, dub_output) 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.
@@ -68,7 +71,9 @@ endfunction
 call ale#linter#Define('d', {
 \   'name': 'dmd',
 \   'executable': 'dmd',
-\   'command': function('ale_linters#d#dmd#RunDUBCommand'),
+\   'command_chain': [
+\       {'callback': 'ale_linters#d#dmd#DUBCommand', 'output_stream': 'stdout'},
+\       {'callback': 'ale_linters#d#dmd#DMDCommand', 'output_stream': 'stderr'},
+\   ],
 \   'callback': 'ale_linters#d#dmd#Handle',
-\   'output_stream': 'stderr',
 \})

ale_linters/dafny/dafny.vim

@@ -13,7 +13,6 @@ 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

@@ -29,8 +29,8 @@ endfunction
 
 call ale#linter#Define('dart', {
 \   'name': 'dartanalyzer',
-\   'executable': {b -> ale#Var(b, 'dart_dartanalyzer_executable')},
+\   'executable_callback': ale#VarFunc('dart_dartanalyzer_executable'),
-\   'command': function('ale_linters#dart#dartanalyzer#GetCommand'),
+\   'command_callback': 'ale_linters#dart#dartanalyzer#GetCommand',
 \   'callback': 'ale_linters#dart#dartanalyzer#Handle',
 \   'lint_file': 1,
 \})

ale_linters/dart/language_server.vim

@@ -14,7 +14,7 @@ endfunction
 call ale#linter#Define('dart', {
 \   'name': 'language_server',
 \   'lsp': 'stdio',
-\   'executable': {b -> ale#Var(b, 'dart_language_server_executable')},
+\   'executable_callback': ale#VarFunc('dart_language_server_executable'),
 \   'command': '%e',
-\   'project_root': function('ale_linters#dart#language_server#GetProjectRoot'),
+\   'project_root_callback': 'ale_linters#dart#language_server#GetProjectRoot',
 \})

ale_linters/dockerfile/dockerfile_lint.vim

@@ -1,61 +0,0 @@
-" 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

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

ale_linters/elixir/credo.vim

@@ -11,18 +11,10 @@ function! ale_linters#elixir#credo#Handle(buffer, lines) abort
         let l:type = l:match[3]
         let l:text = l:match[4]
 
-        " Refactoring opportunities
+        if l:type is# 'C'
-        if l:type is# 'F'
+            let l:type = 'E'
-            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'
+            let l:type = 'W'
         endif
 
         call add(l:output, {
@@ -37,27 +29,9 @@ 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': function('ale_linters#elixir#credo#GetCommand'),
+\   'command': 'mix help credo && mix credo suggest --format=flycheck --read-from-stdin %s',
 \   'callback': 'ale_linters#elixir#credo#Handle',
 \})

ale_linters/elixir/dialyxir.vim

@@ -25,17 +25,10 @@ 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': function('ale_linters#elixir#dialyxir#GetCommand'),
+\   'command': 'mix help dialyzer && mix dialyzer',
 \   'callback': 'ale_linters#elixir#dialyxir#Handle',
 \})
 

ale_linters/elixir/dogma.vim

@@ -29,17 +29,10 @@ 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': function('ale_linters#elixir#dogma#GetCommand'),
+\   'command': 'mix help dogma && mix dogma %s --format=flycheck',
 \   'lint_file': 1,
 \   'callback': 'ale_linters#elixir#dogma#Handle',
 \})

ale_linters/elixir/elixir_ls.vim

@@ -1,21 +0,0 @@
-" 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

@@ -10,6 +10,7 @@ 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 = []
 
@@ -29,24 +30,32 @@ function! ale_linters#elixir#mix#Handle(buffer, lines) abort
     return l:output
 endfunction
 
-function! ale_linters#elixir#mix#GetCommand(buffer) abort
+function! ale_linters#elixir#mix#FindProjectRoot(buffer) abort
-    let l:project_root = ale#handlers#elixir#FindMixProjectRoot(a:buffer)
+    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
 
-    let l:temp_dir = ale#command#CreateDirectory(a:buffer)
+function! ale_linters#elixir#mix#GetCommand(buffer) abort
+    let l:project_root = ale_linters#elixir#mix#FindProjectRoot(a:buffer)
+
+    let l:temp_dir = ale#engine#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
+          \ . l:mix_build_path
-    \ . ' mix compile %s'
+          \ . ' mix compile %s'
 endfunction
 
 call ale#linter#Define('elixir', {
 \   'name': 'mix',
 \   'executable': 'mix',
-\   'command': function('ale_linters#elixir#mix#GetCommand'),
+\   'command_callback': 'ale_linters#elixir#mix#GetCommand',
 \   'callback': 'ale_linters#elixir#mix#Handle',
 \   'lint_file': 1,
 \})

ale_linters/elm/elm_lsp.vim

@@ -1,22 +0,0 @@
-" 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

@@ -137,7 +137,9 @@ function! ale_linters#elm#make#ParseMessageItem(item) abort
     endif
 endfunction
 
-function! ale_linters#elm#make#GetPackageFile(buffer) abort
+" Return the command to execute the linter in the projects directory.
+" If it doesn't, then this will fail when imports are needed.
+function! ale_linters#elm#make#GetCommand(buffer) abort
     let l:elm_json = ale#path#FindNearestFile(a:buffer, 'elm.json')
 
     if empty(l:elm_json)
@@ -145,96 +147,26 @@ function! ale_linters#elm#make#GetPackageFile(buffer) abort
         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
-    return l:dir_set_cmd . '%e make --report=json --output=/dev/null' . l:elm_test_compiler_flag . '%t'
+    return l:dir_set_cmd . '%e make --report=json --output=/dev/null %t'
-endfunction
-
-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': function('ale_linters#elm#make#GetExecutable'),
+\   'executable_callback': ale#node#FindExecutableFunc('elm_make', [
+\       'node_modules/.bin/elm',
+\   ]),
 \   'output_stream': 'both',
-\   'command': function('ale_linters#elm#make#GetCommand'),
+\   'command_callback': 'ale_linters#elm#make#GetCommand',
 \   'callback': 'ale_linters#elm#make#Handle'
 \})

ale_linters/erlang/erlc.vim

@@ -4,7 +4,7 @@ let g:ale_erlang_erlc_options = get(g:, 'ale_erlang_erlc_options', '')
 
 function! ale_linters#erlang#erlc#GetCommand(buffer) abort
     let l:output_file = ale#util#Tempname()
-    call ale#command#ManageFile(a:buffer, l:output_file)
+    call ale#engine#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': function('ale_linters#erlang#erlc#GetCommand'),
+\   'command_callback': 'ale_linters#erlang#erlc#GetCommand',
 \   'callback': 'ale_linters#erlang#erlc#Handle',
 \})

ale_linters/erlang/syntaxerl.vim

@@ -3,17 +3,7 @@
 
 call ale#Set('erlang_syntaxerl_executable', 'syntaxerl')
 
-function! ale_linters#erlang#syntaxerl#RunHelpCommand(buffer) abort
+function! ale_linters#erlang#syntaxerl#GetCommand(buffer, output) abort
-    let l:executable = 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#GetCommand(buffer, output, meta) abort
     let l:use_b_option = match(a:output, '\C\V-b, --base\>') > -1
 
     return '%e' . (l:use_b_option ? ' -b %s %t' : ' %t')
@@ -36,7 +26,10 @@ endfunction
 
 call ale#linter#Define('erlang', {
 \   'name': 'syntaxerl',
-\   'executable': {b -> ale#Var(b, 'erlang_syntaxerl_executable')},
+\   'executable_callback': ale#VarFunc('erlang_syntaxerl_executable'),
-\   'command': {b -> ale_linters#erlang#syntaxerl#RunHelpCommand(b)},
+\   'command_chain': [
+\       {'callback': {-> '%e -h'}},
+\       {'callback': 'ale_linters#erlang#syntaxerl#GetCommand'},
+\   ],
 \   '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': function('ale_linters#eruby#erb#GetCommand'),
+\   'command_callback': 'ale_linters#eruby#erb#GetCommand',
 \   'callback': 'ale#handlers#ruby#HandleSyntaxErrors',
 \})
 

ale_linters/eruby/erubi.vim

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

ale_linters/eruby/ruumba.vim

@@ -1,62 +0,0 @@
-" 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

@@ -66,7 +66,7 @@ endfunction
 call ale#linter#Define('fortran', {
 \   'name': 'gcc',
 \   'output_stream': 'stderr',
-\   'executable': {b -> ale#Var(b, 'fortran_gcc_executable')},
+\   'executable_callback': ale#VarFunc('fortran_gcc_executable'),
-\   'command': function('ale_linters#fortran#gcc#GetCommand'),
+\   'command_callback': 'ale_linters#fortran#gcc#GetCommand',
 \   'callback': 'ale_linters#fortran#gcc#Handle',
 \})

ale_linters/fortran/language_server.vim

@@ -13,7 +13,7 @@ endfunction
 call ale#linter#Define('fortran', {
 \   'name': 'language_server',
 \   'lsp': 'stdio',
-\   'executable': {b -> ale#Var(b, 'fortran_language_server_executable')},
+\   'executable_callback': ale#VarFunc('fortran_language_server_executable'),
 \   'command': '%e',
-\   'project_root': function('ale_linters#fortran#language_server#GetProjectRoot'),
+\   'project_root_callback': 'ale_linters#fortran#language_server#GetProjectRoot',
 \})

ale_linters/fuse/fusionlint.vim

@@ -27,7 +27,7 @@ endfunction
 
 call ale#linter#Define('fuse', {
 \   'name': 'fusionlint',
-\   'executable': {b -> ale#Var(b, 'fuse_fusionlint_executable')},
+\   'executable_callback': ale#VarFunc('fuse_fusionlint_executable'),
-\   'command': function('ale_linters#fuse#fusionlint#GetCommand'),
+\   'command_callback': 'ale_linters#fuse#fusionlint#GetCommand',
 \   'callback': 'ale_linters#fuse#fusionlint#Handle',
 \})

ale_linters/gitcommit/gitlint.vim

@@ -23,10 +23,8 @@ 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 !ale#Var(a:buffer, 'warn_about_trailing_whitespace')
+        if l:code is# 'T2' && !ale#Var(a:buffer, 'warn_about_trailing_whitespace')
-            if l:code is# 'T2' || l:code is# 'B2'
+            continue
-                continue
-            endif
         endif
 
         let l:item = {
@@ -45,7 +43,7 @@ endfunction
 call ale#linter#Define('gitcommit', {
 \   'name': 'gitlint',
 \   'output_stream': 'stderr',
-\   'executable': function('ale_linters#gitcommit#gitlint#GetExecutable'),
+\   'executable_callback': 'ale_linters#gitcommit#gitlint#GetExecutable',
-\   'command': function('ale_linters#gitcommit#gitlint#GetCommand'),
+\   'command_callback': 'ale_linters#gitcommit#gitlint#GetCommand',
 \   'callback': 'ale_linters#gitcommit#gitlint#Handle',
 \})

ale_linters/glsl/glslang.vim

@@ -34,7 +34,7 @@ endfunction
 
 call ale#linter#Define('glsl', {
 \   'name': 'glslang',
-\   'executable': {b -> ale#Var(b, 'glsl_glslang_executable')},
+\   'executable_callback': ale#VarFunc('glsl_glslang_executable'),
-\   'command': function('ale_linters#glsl#glslang#GetCommand'),
+\   'command_callback': 'ale_linters#glsl#glslang#GetCommand',
 \   'callback': 'ale_linters#glsl#glslang#Handle',
 \})

ale_linters/glsl/glslls.vim

@@ -24,7 +24,7 @@ endfunction
 call ale#linter#Define('glsl', {
 \   'name': 'glslls',
 \   'lsp': 'stdio',
-\   'executable': {b -> ale#Var(b, 'glsl_glslls_executable')},
+\   'executable_callback': ale#VarFunc('glsl_glslls_executable'),
-\   'command': function('ale_linters#glsl#glslls#GetCommand'),
+\   'command_callback': 'ale_linters#glsl#glslls#GetCommand',
-\   'project_root': function('ale_linters#glsl#glslls#GetProjectRoot'),
+\   'project_root_callback': 'ale_linters#glsl#glslls#GetProjectRoot',
 \})

ale_linters/go/bingo.vim

@@ -1,29 +0,0 @@
-" 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

@@ -3,15 +3,38 @@
 " 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#GetCommand(buffer) abort
+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
     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 ale#path#BufferCdString(a:buffer)
+    return l:gopath_env_command
-    \   . ale#Var(a:buffer, 'go_go_executable') . ' test'
+    \   . ale#path#BufferCdString(a:buffer)
+    \   . 'go test'
     \   . (!empty(l:options) ? ' ' . l:options : '')
     \   . ' -c -o /dev/null ./'
 endfunction
@@ -22,6 +45,7 @@ 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+)?:? (.+)$'
 
@@ -48,9 +72,11 @@ endfunction
 call ale#linter#Define('go', {
 \   'name': 'gobuild',
 \   'aliases': ['go build'],
-\   'executable': {b -> ale#Var(b, 'go_go_executable')},
+\   'executable': 'go',
-\   'command': function('ale_linters#go#gobuild#GetCommand'),
+\   'command_chain': [
-\   'output_stream': 'stderr',
+\     {'callback': 'ale_linters#go#gobuild#GoEnv', 'output_stream': 'stdout'},
+\     {'callback': 'ale_linters#go#gobuild#GetCommand', 'output_stream': 'stderr'},
+\   ],
 \   'callback': 'ale_linters#go#gobuild#Handler',
 \   'lint_file': 1,
 \})

ale_linters/go/golangci_lint.vim

@@ -1,56 +0,0 @@
-" 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

@@ -1,21 +1,10 @@
 " 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': {b -> ale#Var(b, 'go_golint_executable')},
+\   'executable': 'golint',
-\   'command': function('ale_linters#go#golint#GetCommand'),
+\   'command': 'golint %t',
 \   'callback': 'ale#handlers#unix#HandleAsWarning',
 \})

ale_linters/go/gometalinter.vim

@@ -50,8 +50,8 @@ endfunction
 
 call ale#linter#Define('go', {
 \   'name': 'gometalinter',
-\   'executable': {b -> ale#Var(b, 'go_gometalinter_executable')},
+\   'executable_callback': ale#VarFunc('go_gometalinter_executable'),
-\   'command': function('ale_linters#go#gometalinter#GetCommand'),
+\   'command_callback': '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': function('ale_linters#go#gosimple#GetCommand'),
+\   'command_callback': 'ale_linters#go#gosimple#GetCommand',
 \   'callback': 'ale#handlers#go#Handler',
 \   'output_stream': 'both',
 \   'lint_file': 1,

ale_linters/go/gotype.vim

@@ -6,14 +6,14 @@ function! ale_linters#go#gotype#GetCommand(buffer) abort
         return ''
     endif
 
-    return ale#path#BufferCdString(a:buffer) . ' gotype -e .'
+    return ale#path#BufferCdString(a:buffer) . ' gotype .'
 endfunction
 
 call ale#linter#Define('go', {
 \   'name': 'gotype',
 \   'output_stream': 'stderr',
 \   'executable': 'gotype',
-\   'command': function('ale_linters#go#gotype#GetCommand'),
+\   'command_callback': 'ale_linters#go#gotype#GetCommand',
 \   'callback': 'ale#handlers#go#Handler',
 \   'lint_file': 1,
 \})

ale_linters/go/govet.vim

@@ -4,24 +4,16 @@
 " 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
-    let l:options = ale#Var(a:buffer, 'go_govet_options')
+    return ale#path#BufferCdString(a:buffer) . ' go vet .'
-
-    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': 'govet',
 \   'aliases': ['go vet'],
 \   'output_stream': 'stderr',
-\   'executable': {b -> ale#Var(b, 'go_go_executable')},
+\   'executable': 'go',
-\   'command': function('ale_linters#go#govet#GetCommand'),
+\   'command_callback': 'ale_linters#go#govet#GetCommand',
 \   'callback': 'ale#handlers#go#Handler',
 \   'lint_file': 1,
 \})

ale_linters/go/langserver.vim

@@ -1,28 +0,0 @@
-" 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': function('ale_linters#go#staticcheck#GetCommand'),
+\   'command_callback': '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': function('ale#handlers#eslint#GetExecutable'),
+\   'executable_callback': 'ale#handlers#eslint#GetExecutable',
-\   'command': function('ale#handlers#eslint#GetCommand'),
+\   'command_callback': 'ale#handlers#eslint#GetCommand',
 \   'callback': 'ale#handlers#eslint#Handle',
 \})

ale_linters/graphql/gqlint.vim

@@ -1,15 +1,9 @@
 " 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': function('ale_linters#graphql#gqlint#GetCommand'),
+\   'command': 'gqlint --reporter=simple %t',
 \   'callback': 'ale#handlers#unix#HandleAsWarning',
 \})

ale_linters/hack/hack.vim

@@ -16,7 +16,7 @@ endfunction
 call ale#linter#Define('hack', {
 \   'name': 'hack',
 \   'lsp': 'stdio',
-\   'executable': function('ale_linters#hack#hack#GetExecutable'),
+\   'executable_callback': 'ale_linters#hack#hack#GetExecutable',
 \   'command': '%e lsp --from vim-ale',
-\   'project_root': function('ale_linters#hack#hack#GetProjectRoot'),
+\   'project_root_callback': 'ale_linters#hack#hack#GetProjectRoot',
 \})

ale_linters/hack/hhast.vim

@@ -9,7 +9,7 @@ function! ale_linters#hack#hhast#GetProjectRoot(buffer) abort
     let l:hhconfig = ale#path#FindNearestFile(a:buffer, '.hhconfig')
 
     if empty(l:hhconfig)
-        return ''
+      return ''
     endif
 
     let l:root = fnamemodify(l:hhconfig, ':h')
@@ -33,8 +33,8 @@ endfunction
 call ale#linter#Define('hack', {
 \   'name': 'hhast',
 \   'lsp': 'stdio',
-\   'executable': function('ale_linters#hack#hhast#GetExecutable'),
+\   'executable_callback': 'ale_linters#hack#hhast#GetExecutable',
 \   'command': '%e --mode lsp --from vim-ale',
-\   'project_root': function('ale_linters#hack#hhast#GetProjectRoot'),
+\   'project_root_callback': 'ale_linters#hack#hhast#GetProjectRoot',
-\   'initialization_options': function('ale_linters#hack#hhast#GetInitializationOptions'),
+\   'initialization_options_callback': 'ale_linters#hack#hhast#GetInitializationOptions',
 \})

ale_linters/haml/hamllint.vim

@@ -1,12 +1,6 @@
 " 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 = ''
 
@@ -19,7 +13,7 @@ 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 has('win32')
+        if ale#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)
@@ -27,7 +21,7 @@ function! ale_linters#haml#hamllint#GetCommand(buffer) abort
     endif
 
     return (!empty(l:prefix) ? l:prefix . ' ' : '')
-    \   . ale_linters#haml#hamllint#GetExecutable(a:buffer)
+    \   . 'haml-lint'
     \   . (!empty(l:hamllint_config_file_path) ? ' --config ' . ale#Escape(l:hamllint_config_file_path) : '')
     \   . ' %t'
 endfunction
@@ -51,7 +45,7 @@ endfunction
 
 call ale#linter#Define('haml', {
 \   'name': 'hamllint',
-\   'executable': function('ale_linters#haml#hamllint#GetExecutable'),
+\   'executable': 'haml-lint',
-\   'command': function('ale_linters#haml#hamllint#GetCommand'),
+\   'command_callback': 'ale_linters#haml#hamllint#GetCommand',
 \   'callback': 'ale_linters#haml#hamllint#Handle'
 \})

ale_linters/handlebars/embertemplatelint.vim

@@ -31,9 +31,9 @@ endfunction
 
 call ale#linter#Define('handlebars', {
 \   'name': 'ember-template-lint',
-\   'executable': {b -> ale#node#FindExecutable(b, 'handlebars_embertemplatelint', [
+\   'executable_callback': ale#node#FindExecutableFunc('handlebars_embertemplatelint', [
 \       'node_modules/.bin/ember-template-lint',
-\   ])},
+\   ]),
 \   'command': '%e --json %t',
 \   'callback': 'ale_linters#handlebars#embertemplatelint#Handle',
 \})

ale_linters/haskell/cabal_ghc.vim

@@ -14,6 +14,6 @@ call ale#linter#Define('haskell', {
 \   'aliases': ['cabal-ghc'],
 \   'output_stream': 'stderr',
 \   'executable': 'cabal',
-\   'command': function('ale_linters#haskell#cabal_ghc#GetCommand'),
+\   'command_callback': 'ale_linters#haskell#cabal_ghc#GetCommand',
 \   'callback': 'ale#handlers#haskell#HandleGHCFormat',
 \})

ale_linters/haskell/ghc-mod.vim

@@ -0,0 +1,18 @@
+" Author: wizzup <wizzup@gmail.com>
+" Description: ghc-mod for Haskell files
+
+call ale#linter#Define('haskell', {
+\   'name': 'ghc_mod',
+\   'aliases': ['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',
+\   'aliases': ['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': function('ale_linters#haskell#ghc#GetCommand'),
+\   'command_callback': 'ale_linters#haskell#ghc#GetCommand',
 \   'callback': 'ale#handlers#haskell#HandleGHCFormat',
 \})

ale_linters/haskell/ghc_mod.vim

@@ -1,19 +0,0 @@
-" 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

@@ -5,16 +5,13 @@ call ale#Set('haskell_hdevtools_executable', 'hdevtools')
 call ale#Set('haskell_hdevtools_options', get(g:, 'hdevtools_options', '-g -Wall'))
 
 function! ale_linters#haskell#hdevtools#GetCommand(buffer) abort
-    let l:executable = ale#Var(a:buffer, 'haskell_hdevtools_executable')
+    return '%e check' . ale#Pad(ale#Var(a:buffer, 'haskell_hdevtools_options'))
-
-    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': {b -> ale#Var(b, 'haskell_hdevtools_executable')},
+\   'executable_callback': ale#VarFunc('haskell_hdevtools_executable'),
-\   'command': function('ale_linters#haskell#hdevtools#GetCommand'),
+\   'command_callback': 'ale_linters#haskell#hdevtools#GetCommand',
 \   'callback': 'ale#handlers#haskell#HandleGHCFormat',
 \})

ale_linters/haskell/hie.vim

@@ -3,39 +3,42 @@
 
 call ale#Set('haskell_hie_executable', 'hie')
 
+function! ale_linters#haskell#hie#GetExecutable(buffer) abort
+    return ale#Var(a:buffer, 'haskell_hie_executable')
+endfunction
+
 function! ale_linters#haskell#hie#GetProjectRoot(buffer) abort
     " Search for the stack file first
     let l:project_file = ale#path#FindNearestFile(a:buffer, 'stack.yaml')
 
     " If it's empty, search for the cabal file
     if empty(l:project_file)
-        " Search all of the paths except for the root filesystem path.
+        let l:cabal_file = fnamemodify(bufname(a:buffer), ':p:h')
-        let l:paths = join(
+        let l:paths = ''
-        \   ale#path#Upwards(expand('#' . a:buffer . ':p:h'))[:-2],
+
-        \   ','
+        while empty(matchstr(l:cabal_file, '^\(\/\|\(\w:\\\)\)$'))
-        \)
+            let l:cabal_file = fnamemodify(l:cabal_file, ':h')
+            let l:paths = l:paths . l:cabal_file . ','
+        endwhile
+
         let l:project_file = globpath(l:paths, '*.cabal')
     endif
 
-    " If we still can't find one, use the current file.
+    " Either extract the project directory or take the current working
-    if empty(l:project_file)
+    " directory
-        let l:project_file = expand('#' . a:buffer . ':p')
+    if !empty(l:project_file)
+        let l:project_file = fnamemodify(l:project_file, ':h')
+    else
+        let l:project_file = expand('#' . a:buffer . ':p:h')
     endif
 
-    return fnamemodify(l:project_file, ':h')
+    return l:project_file
-endfunction
-
-function! ale_linters#haskell#hie#GetCommand(buffer) abort
-    let l:executable = ale#Var(a:buffer, 'haskell_hie_executable')
-
-    return ale#handlers#haskell_stack#EscapeExecutable(l:executable, 'hie')
-    \   . ' --lsp'
 endfunction
 
 call ale#linter#Define('haskell', {
 \   'name': 'hie',
 \   'lsp': 'stdio',
-\   'command': function('ale_linters#haskell#hie#GetCommand'),
+\   'command': '%e --lsp',
-\   'executable': {b -> ale#Var(b, 'haskell_hie_executable')},
+\   'executable_callback': 'ale_linters#haskell#hie#GetExecutable',
-\   'project_root': function('ale_linters#haskell#hie#GetProjectRoot'),
+\   'project_root_callback': 'ale_linters#haskell#hie#GetProjectRoot',
 \})

ale_linters/haskell/hlint.vim

@@ -1,9 +1,6 @@
 " Author: jparoz <jesse.paroz@gmail.com>
 " Description: hlint for Haskell files
 
-call ale#Set('haskell_hlint_executable', 'hlint')
-call ale#Set('haskell_hlint_options', get(g:, 'hlint_options', ''))
-
 function! ale_linters#haskell#hlint#Handle(buffer, lines) abort
     let l:output = []
 
@@ -29,18 +26,9 @@ function! ale_linters#haskell#hlint#Handle(buffer, lines) abort
     return l:output
 endfunction
 
-function! ale_linters#haskell#hlint#GetCommand(buffer) abort
-    let l:hlintopts = '--color=never --json'
-
-    return ale#handlers#hlint#GetExecutable(a:buffer)
-    \      . ' ' . ale#Var(a:buffer, 'haskell_hlint_options')
-    \      . ' ' . l:hlintopts
-    \      . ' -'
-endfunction
-
 call ale#linter#Define('haskell', {
 \   'name': 'hlint',
-\   'executable': {b -> ale#Var(b, 'haskell_hlint_executable')},
+\   'executable': 'hlint',
-\   'command': function('ale_linters#haskell#hlint#GetCommand') ,
+\   'command': 'hlint --color=never --json -',
 \   'callback': 'ale_linters#haskell#hlint#Handle',
 \})

ale_linters/haskell/stack_build.vim

@@ -16,8 +16,8 @@ call ale#linter#Define('haskell', {
 \   'name': 'stack_build',
 \   'aliases': ['stack-build'],
 \   'output_stream': 'stderr',
-\   'executable': function('ale#handlers#haskell#GetStackExecutable'),
+\   'executable': 'stack',
-\   'command': function('ale_linters#haskell#stack_build#GetCommand'),
+\   'command_callback': 'ale_linters#haskell#stack_build#GetCommand',
 \   'lint_file': 1,
 \   'callback': 'ale#handlers#haskell#HandleGHCFormat',
 \})

ale_linters/haskell/stack_ghc.vim

@@ -1,20 +1,11 @@
 " Author: w0rp <devw0rp@gmail.com>
 " Description: ghc for Haskell files, using Stack
 
-call ale#Set('haskell_stack_ghc_options', '-fno-code -v0')
-
-function! ale_linters#haskell#stack_ghc#GetCommand(buffer) abort
-    return ale#handlers#haskell#GetStackExecutable(a:buffer)
-    \ . ' ghc -- '
-    \ . ale#Var(a:buffer, 'haskell_stack_ghc_options')
-    \ . ' %t'
-endfunction
-
 call ale#linter#Define('haskell', {
 \   'name': 'stack_ghc',
 \   'aliases': ['stack-ghc'],
 \   'output_stream': 'stderr',
-\   'executable': function('ale#handlers#haskell#GetStackExecutable'),
+\   'executable': 'stack',
-\   'command': function('ale_linters#haskell#stack_ghc#GetCommand'),
+\   'command': 'stack ghc -- -fno-code -v0 %t',
 \   'callback': 'ale#handlers#haskell#HandleGHCFormat',
 \})

ale_linters/help/alex.vim

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

ale_linters/html/alex.vim

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

ale_linters/html/htmlhint.vim

@@ -24,9 +24,9 @@ endfunction
 
 call ale#linter#Define('html', {
 \   'name': 'htmlhint',
-\   'executable': {b -> ale#node#FindExecutable(b, 'html_htmlhint', [
+\   'executable_callback': ale#node#FindExecutableFunc('html_htmlhint', [
 \       'node_modules/.bin/htmlhint',
-\   ])},
+\   ]),
-\   'command': function('ale_linters#html#htmlhint#GetCommand'),
+\   'command_callback': 'ale_linters#html#htmlhint#GetCommand',
 \   'callback': 'ale#handlers#unix#HandleAsError',
 \})