Close #1315 - Make the vint executable configurable

ale_linters/vim/vint.vim

@@ -2,31 +2,38 @@
 " Description: This file adds support for checking Vim code with Vint.
 
 " This flag can be used to change enable/disable style issues.
-let g:ale_vim_vint_show_style_issues =
-\   get(g:, 'ale_vim_vint_show_style_issues', 1)
-let s:enable_neovim = has('nvim') ? ' --enable-neovim ' : ''
+call ale#Set('vim_vint_show_style_issues', 1)
+call ale#Set('vim_vint_executable', 'vint')
+let s:enable_neovim = has('nvim') ? ' --enable-neovim' : ''
 let s:format = '-f "{file_path}:{line_number}:{column_number}: {severity}: {description} (see {reference})"'
 
+function! ale_linters#vim#vint#GetExecutable(buffer) abort
+    return ale#Var(a:buffer, 'vim_vint_executable')
+endfunction
+
 function! ale_linters#vim#vint#VersionCommand(buffer) abort
+    let l:executable = ale_linters#vim#vint#GetExecutable(a:buffer)
+
     " Check the Vint version if we haven't checked it already.
-    return !ale#semver#HasVersion('vint')
-    \   ? 'vint --version'
+    return !ale#semver#HasVersion(l:executable)
+    \   ? ale#Escape(l:executable) . ' --version'
     \   : ''
 endfunction
 
 function! ale_linters#vim#vint#GetCommand(buffer, version_output) abort
-    let l:version = ale#semver#GetVersion('vint', a:version_output)
+    let l:executable = ale_linters#vim#vint#GetExecutable(a:buffer)
+    let l:version = ale#semver#GetVersion(l:executable, a:version_output)
 
     let l:can_use_no_color_flag = empty(l:version)
     \   || ale#semver#GTE(l:version, [0, 3, 7])
 
     let l:warning_flag = ale#Var(a:buffer, 'vim_vint_show_style_issues') ? '-s' : '-w'
 
-    return 'vint '
-    \   . l:warning_flag . ' '
-    \   . (l:can_use_no_color_flag ? '--no-color ' : '')
+    return ale#Escape(l:executable)
+    \   . ' ' . l:warning_flag
+    \   . (l:can_use_no_color_flag ? ' --no-color' : '')
     \   . s:enable_neovim
-    \   . s:format
+    \   . ' ' . s:format
     \   . ' %t'
 endfunction
 
@@ -58,7 +65,7 @@ endfunction
 
 call ale#linter#Define('vim', {
 \   'name': 'vint',
-\   'executable': 'vint',
+\   'executable_callback': 'ale_linters#vim#vint#GetExecutable',
 \   'command_chain': [
 \       {'callback': 'ale_linters#vim#vint#VersionCommand', 'output_stream': 'stderr'},
 \       {'callback': 'ale_linters#vim#vint#GetCommand', 'output_stream': 'stdout'},

doc/ale-vim.txt

@@ -5,6 +5,14 @@ ALE Vim Integration                                           *ale-vim-options*
 ===============================================================================
 vint                                                             *ale-vim-vint*
 
+g:ale_vim_vint_executable                           *g:ale_vim_vint_executable*
+                                                    *b:ale_vim_vint_executable*
+  Type: |String|
+  Default: `'vint'`
+
+  This option can be set to change the executable path for Vint.
+
+
 g:ale_vim_vint_show_style_issues             *g:ale_vim_vint_show_style_issues*
                                              *b:ale_vim_vint_show_style_issues*
   Type: |Number|

test/command_callback/test_vint_command_callback.vader

@@ -0,0 +1,39 @@
+Before:
+  Save g:ale_vim_vint_executable
+
+  unlet! g:ale_vim_vint_executable
+
+  runtime ale_linters/vim/vint.vim
+
+  let b:command_tail = (has('nvim') ? ' --enable-neovim' : '')
+  \ . ' -f "{file_path}:{line_number}:{column_number}: {severity}: {description} (see {reference})" %t'
+  call ale#semver#ResetVersionCache()
+
+After:
+  Restore
+
+  call ale#linter#Reset()
+  call ale#semver#ResetVersionCache()
+
+  unlet! b:bin_dir
+  unlet! b:executable
+
+Execute(The default command should be correct):
+  AssertEqual 'vint', ale_linters#vim#vint#GetExecutable(bufnr(''))
+  AssertEqual
+  \ ale#Escape('vint') .' --version',
+  \ ale_linters#vim#vint#VersionCommand(bufnr(''))
+  AssertEqual
+  \ ale#Escape('vint') .' -s --no-color' . b:command_tail,
+  \ ale_linters#vim#vint#GetCommand(bufnr(''), [])
+
+Execute(The executable should be configurable):
+  let g:ale_vim_vint_executable = 'foobar'
+
+  AssertEqual 'foobar', ale_linters#vim#vint#GetExecutable(bufnr(''))
+  AssertEqual
+  \ ale#Escape('foobar') .' --version',
+  \ ale_linters#vim#vint#VersionCommand(bufnr(''))
+  AssertEqual
+  \ ale#Escape('foobar') .' -s --no-color' . b:command_tail,
+  \ ale_linters#vim#vint#GetCommand(bufnr(''), [])