Tighten match on quickfix filename in log

Author: tpope

autoload/rails.vim

@@ -4003,7 +4003,7 @@ function! rails#log_syntax()
     syn match railslogEscape      '\e\[[0-9;]*m'
     syn match railslogEscapeMN    '\e\[[0-9;]*m' nextgroup=railslogModelNum,railslogEscapeMN skipwhite contained
   endif
-  syn match   railslogQfFileName  "^[^|]*|\@=" nextgroup=railslogQfSeparator
+  syn match   railslogQfFileName  "^[^()|]*|\@=" nextgroup=railslogQfSeparator
   syn match   railslogQfSeparator "|" nextgroup=railslogQfLineNr contained
   syn match   railslogQfLineNr    "[^|]*" contained contains=railslogQfError
   syn match   railslogQfError     "error" contained