[type]
Parser

[grammar]
grammar T;
a : LETTERS {<InputText():writeln()>} ;
// Note the double-backslash to avoid Java passing
// unescaped values as part of the grammar.
LETTERS : ('a'|'\\u00E4'|'\\u4E9C'|'\\u3042')* 'c';

[start]
a

[input]
aäあ亜c

[output]
"""aäあ亜c
"""