#1095 Apply all patterns for g:ale_pattern_options, instead of just the first match

5 files changed, 109 insertions, 41 deletions

diff --git a/autoload/ale/pattern_options.vim b/autoload/ale/pattern_options.vim
index a603c980..a55a27f6 100644
--- a/autoload/ale/pattern_options.vim
+++ b/autoload/ale/pattern_options.vim
@@ -1,22 +1,34 @@
 " Author: w0rp <devw0rp@gmail.com>
 " Description: Set options in files based on regex patterns.
 
-function! ale#pattern_options#SetOptions() abort
-    let l:filename = expand('%:p') " no-custom-checks
-    let l:options = {}
+function! s:CmpPatterns(left_item, right_item) abort
+    if a:left_item[0] < a:right_item[0]
+        return -1
+    endif
 
-    for l:pattern in keys(g:ale_pattern_options)
-        if match(l:filename, l:pattern) >= 0
-            let l:options = g:ale_pattern_options[l:pattern]
-            break
-        endif
-    endfor
+    if a:left_item[0] > a:right_item[0]
+        return 1
+    endif
+
+    return 0
+endfunction
+
+function! ale#pattern_options#SetOptions(buffer) abort
+    if !g:ale_pattern_options_enabled || empty(g:ale_pattern_options)
+        return
+    endif
 
-    for l:key in keys(l:options)
-        if l:key[:0] is# '&'
-            call setbufvar(bufnr(''), l:key, l:options[l:key])
-        else
-            let b:[l:key] = l:options[l:key]
+    let l:filename = expand('#' . a:buffer . ':p')
+
+    " The patterns are sorted, so they are applied consistently.
+    for [l:pattern, l:options] in sort(
+    \   items(g:ale_pattern_options),
+    \   function('s:CmpPatterns')
+    \)
+        if match(l:filename, l:pattern) >= 0
+            for [l:key, l:value] in items(l:options)
+                call setbufvar(a:buffer, l:key, l:value)
+            endfor
         endif
     endfor
 endfunction
diff --git a/autoload/ale/toggle.vim b/autoload/ale/toggle.vim
index 6809edd1..aa6d113b 100644
--- a/autoload/ale/toggle.vim
+++ b/autoload/ale/toggle.vim
@@ -4,9 +4,7 @@ function! ale#toggle#InitAuGroups() abort
 
     augroup ALEPatternOptionsGroup
         autocmd!
-        if g:ale_enabled && g:ale_pattern_options_enabled
-            autocmd BufEnter,BufRead * call ale#pattern_options#SetOptions()
-        endif
+        autocmd BufEnter,BufRead * call ale#pattern_options#SetOptions(str2nr(expand('<abuf>')))
     augroup END
 
     augroup ALERunOnTextChangedGroup
@@ -71,7 +69,6 @@ function! ale#toggle#InitAuGroups() abort
     augroup END
 
     if !g:ale_enabled
-        augroup! ALEPatternOptionsGroup
         augroup! ALERunOnTextChangedGroup
         augroup! ALERunOnEnterGroup
         augroup! ALERunOnInsertLeave
diff --git a/doc/ale.txt b/doc/ale.txt
index a684d704..6d2e2c6d 100644
--- a/doc/ale.txt
+++ b/doc/ale.txt
@@ -1009,11 +1009,14 @@ g:ale_pattern_options                                   *g:ale_pattern_options*
   only `eslint` for checking those files by setting `b:ale_linters`.
 
   Filenames are matched with |match()|, and patterns depend on the |magic|
-  setting, unless prefixed with the special escape sequences like `'\v'`, etc.
-
-  The patterns can match any part of a filename. The absolute path of the
+  setting, unless prefixed with the special escape sequences like `'\v'`,
+  etc.The patterns can match any part of a filename. The absolute path of the
   filename will be used for matching, taken from `expand('%:p')`.
 
+  The options for every match for the filename will be applied, with the
+  pattern keys sorted in alphabetical order. Options for `'zebra'` will
+  override the options for `'alpha'` for a filename `alpha-zebra`.
+
 
 g:ale_pattern_options_enabled                   *g:ale_pattern_options_enabled*
 
@@ -1021,8 +1024,9 @@ g:ale_pattern_options_enabled                   *g:ale_pattern_options_enabled*
   Default: `!empty(g:ale_pattern_options)`
 
   This option can be used for turning the behaviour of setting
-  |g:ale_pattern_options| on or off. By default, setting a single key
-  for |g:ale_pattern_options| will turn this option on.
+  |g:ale_pattern_options| on or off. By default, setting a single key for
+  |g:ale_pattern_options| will turn this option on, as long as the setting is
+  configured before ALE is loaded.
 
 
 g:ale_set_balloons                                         *g:ale_set_balloons*
diff --git a/test/test_autocmd_commands.vader b/test/test_autocmd_commands.vader
index 88504a9b..e7e9e86e 100644
--- a/test/test_autocmd_commands.vader
+++ b/test/test_autocmd_commands.vader
@@ -108,17 +108,28 @@ Execute (g:ale_lint_on_insert_leave = 0 should bind no events):
 
   AssertEqual [], CheckAutocmd('ALERunOnInsertLeave')
 
-Execute (g:ale_pattern_options_enabled = 0 should bind no events):
+Execute (g:ale_pattern_options_enabled = 1 should bind BufReadPost and BufEnter):
+  let g:ale_pattern_options_enabled = 1
+
+  AssertEqual [
+  \ 'BufEnter * call ale#pattern_options#SetOptions(str2nr(expand(''<abuf>'')))',
+  \ 'BufReadPost * call ale#pattern_options#SetOptions(str2nr(expand(''<abuf>'')))',
+  \], CheckAutocmd('ALEPatternOptionsGroup')
+
+Execute (g:ale_pattern_options_enabled = 0 should still bind events):
   let g:ale_pattern_options_enabled = 0
 
-  AssertEqual [], CheckAutocmd('ALEPatternOptionsGroup')
+  AssertEqual [
+  \ 'BufEnter * call ale#pattern_options#SetOptions(str2nr(expand(''<abuf>'')))',
+  \ 'BufReadPost * call ale#pattern_options#SetOptions(str2nr(expand(''<abuf>'')))',
+  \], CheckAutocmd('ALEPatternOptionsGroup')
 
-Execute (g:ale_pattern_options_enabled = 1 should bind BufReadPost and BufEnter):
-  let g:ale_pattern_options_enabled = 1
+Execute (g:ale_enabled = 0 should still bind pattern events):
+  let g:ale_enabled = 0
 
   AssertEqual [
-  \ 'BufEnter * call ale#pattern_options#SetOptions()',
-  \ 'BufReadPost * call ale#pattern_options#SetOptions()',
+  \ 'BufEnter * call ale#pattern_options#SetOptions(str2nr(expand(''<abuf>'')))',
+  \ 'BufReadPost * call ale#pattern_options#SetOptions(str2nr(expand(''<abuf>'')))',
   \], CheckAutocmd('ALEPatternOptionsGroup')
 
 Execute (g:ale_lint_on_enter = 0 should bind only the BufEnter event):
diff --git a/test/test_pattern_options.vader b/test/test_pattern_options.vader
index 164e5aa7..0ad4415f 100644
--- a/test/test_pattern_options.vader
+++ b/test/test_pattern_options.vader
@@ -3,30 +3,74 @@ Before:
   Save g:ale_pattern_options_enabled
   Save &filetype
 
+  let g:ale_pattern_options_enabled = 1
+  let g:ale_pattern_options = {}
+
+  let b:ale_enabled = 0
+  let b:some_option = 0
+
+  call ale#test#SetDirectory('/testplugin/test')
+
 After:
   Restore
 
   unlet! b:ale_enabled
   unlet! b:some_option
 
-Execute(Buffer variables should be set when filename patterns match):
-  let g:ale_pattern_options = {'baz.*\.js': {
-  \ 'ale_enabled': 1,
-  \ 'some_option': 347,
-  \ '&filetype': 'pattern_option_set_filetype',
-  \}}
+  call ale#test#RestoreDirectory()
 
-  silent! file foobar.js
+Execute(The pattern options function should work when there are no patterns):
+  call ale#test#SetFilename('foobar.js')
+  call ale#pattern_options#SetOptions(bufnr(''))
 
-  call ale#pattern_options#SetOptions()
+Execute(Buffer variables should be set when filename patterns match):
+  let g:ale_pattern_options = {
+  \ 'baz.*\.js': {
+  \   'ale_enabled': 1,
+  \   'some_option': 347,
+  \   '&filetype': 'pattern_option_set_filetype',
+  \ },
+  \}
 
-  Assert !exists('b:ale_enabled')
-  Assert !exists('b:some_option')
+  call ale#test#SetFilename('foobar.js')
+  call ale#pattern_options#SetOptions(bufnr(''))
 
-  silent! file bazboz.js
+  AssertEqual 0, b:ale_enabled
+  AssertEqual 0, b:some_option
 
-  call ale#pattern_options#SetOptions()
+  call ale#test#SetFilename('bazboz.js')
+  call ale#pattern_options#SetOptions(bufnr(''))
 
   AssertEqual 1, b:ale_enabled
   AssertEqual 347, b:some_option
   AssertEqual 'pattern_option_set_filetype', &filetype
+
+Execute(Multiple pattern matches should be applied):
+  let g:ale_pattern_options = {
+  \ 'foo': {
+  \   'some_option': 666,
+  \ },
+  \ 'bar': {
+  \   'ale_enabled': 1,
+  \   'some_option': 123,
+  \ },
+  \ 'notmatched': {
+  \   'some_option': 489,
+  \   'ale_enabled': 0,
+  \ },
+  \}
+
+  call ale#test#SetFilename('foobar.js')
+  call ale#pattern_options#SetOptions(bufnr(''))
+
+  AssertEqual 1, b:ale_enabled
+  AssertEqual 666, b:some_option
+
+Execute(Patterns should not be applied when the setting is disabled):
+  let g:ale_pattern_options_enabled = 0
+  let g:ale_pattern_options = {'foo': {'some_option': 666}}
+
+  call ale#test#SetFilename('foobar.js')
+  call ale#pattern_options#SetOptions(bufnr(''))
+
+  AssertEqual 0, b:some_option