this is a standard feature in Trac, I think. I'm having a bit if buyers-remorse
about roundup vs trac. I just ran into another nifty project using trac
http://darcs.0x539.de/trac/obby/cgi-bin/trac.cgi (though their URIs aren't so
nice). I wonder if roundup-to-trac migration is feasible... hmm... I think it
would involve redirecting URIs; I don't think trac supports issue76 style; its
URIs structure is, for example,
http://darcs.0x539.de/trac/obby/cgi-bin/trac.cgi/ticket/155