Add erb-formatter support (#4546)

autoload/ale/fix/registry.vim

@@ -615,6 +615,11 @@ let s:default_registry = {
 \       'function': 'ale#fixers#npmgroovylint#Fix',
 \       'suggested_filetypes': ['groovy'],
 \       'description': 'Fix Groovy files with npm-groovy-fix.',
+\   },
+\   'erb-formatter': {
+\       'function': 'ale#fixers#erbformatter#Fix',
+\       'suggested_filetypes': ['eruby'],
+\       'description': 'Apply erb-formatter -w to eruby/erb files.',
 \   }
 \}
 

autoload/ale/fixers/erbformatter.vim

@@ -0,0 +1,13 @@
+" Author: Arash Mousavi <arash-m>
+" Description: Support for ERB::Formetter https://github.com/nebulab/erb-formatter
+
+call ale#Set('eruby_erbformatter_executable', 'erb-formatter')
+
+function! ale#fixers#erbformatter#Fix(buffer) abort
+    let l:executable = ale#Var(a:buffer, 'eruby_erbformatter_executable')
+
+    return {
+    \   'command': ale#Escape(l:executable) . ' -w %t',
+    \   'read_temporary_file': 1,
+    \}
+endfunction