I am trying to migrate from Antlr 1.33 to Antlr 2.7 I have a token definition in my 1.33 Grammer like this. #token BASIC "[Bb][Aa][Ss][Ii][Cc]" to match the keyword Basic in a case insensitive manner. How to I define this in the Antlr 2.7 lexer? Thanks. Cela. Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/