'#!/usr/bin/env escript\n' Comment.Hashbang

'\n'          Text.Whitespace

'main'        Name.Function
'('           Punctuation
'_'           Punctuation
'Args'        Name.Variable
')'           Punctuation
' '           Text.Whitespace
'-'           Operator
'>'           Operator
'\n    '      Text.Whitespace
'ok'          Name
'.'           Punctuation
'\n'          Text.Whitespace