#371 Allow buffer variables to be set based on patterns

autoload/ale/pattern_options.vim

@@ -0,0 +1,18 @@
+" 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')
+    let l:options = {}
+
+    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
+
+    for l:key in keys(l:options)
+        let b:[l:key] = l:options[l:key]
+    endfor
+endfunction