I'm trying to run TkDiff on Cygwin. Now it appears that cygwish80 is not a true cygwin application since it doesn't understand Cygwin paths. However it is linked with cygwin1.dll and it transforms all environment variables like $TMP and $HOME into Cygwin format that it cannot subsequently use. I am running tkdiff from a .bat file with cygwish80 d:\path\tkdiff.tcl, so it's definitely cygwish80 itself that does the transformation. Marius Gedminas -- "While preceding your entrance with a grenade is a good tactic in Quake, it can lead to problems if attempted at work." -- C Hacking -- Want to unsubscribe from this list? Check out: http://cygwin.com/ml/#unsubscribe-simple