antlr-3.4/runtime/Python/tests/t038lexerRuleLabel.g

lexer grammar t038lexerRuleLabel;
options {
  language = Python;
}

A: 'a'..'z' WS '0'..'9'
        {
            print $WS
            print $WS.type
            print $WS.line
            print $WS.pos
            print $WS.channel
            print $WS.index
            print $WS.text
        }
    ;

fragment WS  :
        (   ' '
        |   '\t'
        |  ( '\n'
            |	'\r\n'
            |	'\r'
            )
        )+
        { $channel = HIDDEN }
    ;