Add fixer for toml using taplo

autoload/ale/fix/registry.vim

@@ -656,6 +656,11 @@ let s:default_registry = {
 \       'suggested_filetypes': ['javascript', 'typescript'],
 \       'description': 'Apply biome (ex. rome) check to a file.',
 \   },
+\   'taplo': {
+\       'function': 'ale#fixers#taplo#Fix',
+\       'suggested_filetypes': ['toml'],
+\       'description': 'Fix TOML files using taplo.',
+\   },
 \}
 
 " Reset the function registry to the default entries.

autoload/ale/fixers/taplo.vim

@@ -0,0 +1,10 @@
+" Author: Jeremy Cantrell <[email protected]>
+" Description: A versatile, feature-rich TOML toolkit
+
+function! ale#fixers#taplo#Fix(buffer) abort
+    let l:executable = ale#handlers#taplo#GetExecutable(a:buffer)
+
+    return {
+    \   'command': ale#Escape(l:executable) . ' format -'
+    \}
+endfunction

autoload/ale/handlers/taplo.vim

@@ -0,0 +1,8 @@
+" Author: Jeremy Cantrell <[email protected]>
+" Description: A versatile, feature-rich TOML toolkit
+
+call ale#Set('taplo_executable', 'taplo')
+
+function! ale#handlers#taplo#GetExecutable(buffer) abort
+    return ale#Var(a:buffer, 'taplo_executable')
+endfunction

doc/ale-supported-languages-and-tools.txt

@@ -654,6 +654,7 @@ Notes:
   * `thriftcheck`
 * TOML
   * `dprint`
+  * `taplo`
 * TypeScript
   * `biome`
   * `cspell`

doc/ale-toml.txt

@@ -8,5 +8,11 @@ dprint                                                        *ale-toml-dprint*
 See |ale-dprint-options| and https://dprint.dev/plugins/toml
 
 
+===============================================================================
+taplo                                                         *ale-toml-taplo*
+
+See https://taplo.tamasfe.dev/
+
+
 ===============================================================================
   vim:tw=78:ts=2:sts=2:sw=2:ft=help:norl:

doc/ale.txt

@@ -3440,6 +3440,7 @@ documented in additional help files.
     thriftcheck...........................|ale-thrift-thriftcheck|
   toml....................................|ale-toml-options|
     dprint................................|ale-toml-dprint|
+    taplo.................................|ale-toml-taplo|
   typescript..............................|ale-typescript-options|
     biome.................................|ale-typescript-biome|
     cspell................................|ale-typescript-cspell|

supported-tools.md

@@ -663,6 +663,7 @@ formatting.
   * [thriftcheck](https://github.com/pinterest/thriftcheck)
 * TOML
   * [dprint](https://dprint.dev)
+  * [taplo](https://taplo.tamasfe.dev)
 * TypeScript
   * [biome](http://biomejs.dev)
   * [cspell](https://github.com/streetsidesoftware/cspell/tree/main/packages/cspell)

test/fixers/test_taplo_fixer.vader

@@ -0,0 +1,12 @@
+Before:
+  Save g:ale_taplo_executable
+
+After:
+  Restore
+
+Execute(The taplo fixer should use the options you set):
+  let g:ale_taplo_executable = 'foo'
+
+  AssertEqual
+  \ {'command': ale#Escape('foo') . ' format -'},
+  \ ale#fixers#taplo#Fix(bufnr(''))