message: Let the funcRegexp for vim match a function with an argument
  This should probably continue into parsing the arguments and their
  types, but this at least restores syntax highlighting for functions
  with args.
diff: @@ -25,7 +25,7 @@ let identifierRegexp = '(\a|_)\w*'
  call s:DefSynGroup('brilVariable', identifierRegexp, 'contained')
  " Tokens
  -let funcRegexp = s:ConcatRegexp('\@', identifierRegexp)
  +let funcRegexp = s:ConcatRegexp('\@', identifierRegexp, '(\(.*\))?')
  call s:DefSynGroup('brilFuncName', funcRegexp, 'contained')
  " Types
  