Hi there, this update has been long due. Hans De Goede pitches some of the features of Bison 2.5 in the upstream monitoring bug report https://bugzilla.redhat.com/show_bug.cgi?id=704819 ... and it's also written in more detail here: http://lists.gnu.org/archive/html/info-gnu/2011-05/msg00009.html (and of course in the NEWS file shipped with bison). The bottom line is that there's quite a few changes. If anything breaks or starts to misbehave, be sure to ping me. Thanks, PM -- devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/devel