Merge pull request tpope#421 from glittershark/highlight-layout-in-mailers

Highlight `layout` in mailers

Author: tpope

autoload/rails.vim

@@ -3766,7 +3766,7 @@ function! rails#buffer_syntax()
       if buffer.type_name('mailer')
         syn keyword rubyRailsMethod logger url_for polymorphic_path polymorphic_url
         syn keyword rubyRailsRenderMethod mail render
-        syn keyword rubyRailsControllerMethod attachments default helper helper_attr helper_method
+        syn keyword rubyRailsControllerMethod attachments default helper helper_attr helper_method layout
       endif
       if buffer.type_name('helper','view')
         syn keyword rubyRailsViewMethod polymorphic_path polymorphic_url