[type] Lexer [grammar] lexer grammar L; CMT : ('//' .*? '\n')+?; WS : (' '|'\t')+; [input] //blah //blah [output] [@0,0:6='//blah\n',<1>,1:0] [@1,7:13='//blah\n',<1>,2:0] [@2,14:13='',<-1>,3:0]