Quick links to the JFlex bug tracker at sourceforge:
Submitting new bugs and feature requests
If you find a new bug or think a useful feature should be implemented in JFlex, please
use the issue tracker at sourceforge.
Sourceforge users may want to login first.
If you would just like to discuss an idea or a strange behaviour please use the
jflex-users mailing list. You need to subscribe before you can post to it.
Please be sure to check the manual, the FAQ,
and the currently open issues before reporting a new one.