runtime/Python/tests/t010lexer.g - platform/external/antlr - Git at Google

 lexer grammar t010lexer;
 options {
   language = Python;
 }

 IDENTIFIER: ('a'..'z'|'A'..'Z'|'_') ('a'..'z'|'A'..'Z'|'0'..'9'|'_')*;
 WS: (' ' | '\n')+;
	lexer grammar t010lexer;
	options {
	language = Python;
	}

	IDENTIFIER: ('a'..'z'\|'A'..'Z'\|'_') ('a'..'z'\|'A'..'Z'\|'0'..'9'\|'_')*;
	WS: (' ' \| '\n')+;