At 05:34 14/12/2007, Tak-po Li wrote: >I recall the Verilog example in antlr.org for v2 handles it as: > >ESCAPED_IDENTIFIER > : '\\'! (~ '\040')+ ('\040'|'\t'|'\n')! > ; First off, try changing the '\040's into ' 's. I'm not sure if v3 supports octal escapes.