[type]
Lexer

[grammar]
lexer grammar L;
A : ["\\\\ab]+ {<writeln("\"A\"")>} ;
WS : [ \n\t]+ -> skip ;

[input]
b"\a

[output]
A
[@0,0:3='b"\a',<1>,1:0]
[@1,4:3='<EOF>',<-1>,1:4]