I've just upgraded ikiwiki from version 1.45 to 1.49, using my own Ubuntu Gutsy backport. Now I can't rebuild all my wiki pages. Both methods of rebuilding pages fail:

$ sudo ikiwiki-mass-rebuild 
Processing /home/ptecza/path/to/ikiwiki.setup as user ptecza ...
failed to set egid 1000 4 20 24 25 29 30 44 46 104 109 110 119 1000 (got back 1000 1000 119 110 109 104 46 44 30 29 25 24 20 4) at /usr/sbin/ikiwiki-mass-rebuild line 38, <$list> line 13.
Processing /home/ptecza/path/to/ikiwiki.setup as user ptecza failed with code 65280

$ ikiwiki --setup ikiwiki.setup
pomyślnie utworzono /var/www/path/to/ikiwiki.cgi
pomyślnie utworzono /home/ptecza/path/to/hooks/post-commit.ikiwiki
terminate called after throwing an instance of 'Xapian::InvalidArgumentError'
Aborted

I've installed all needed packages for new search engine and added path to omega binary in my ikiwiki.setup file.

Any ideas how to fix that problem? --Paweł

Well, it's two separate problems. Xapian is crashing in the C code when asked to create a stemmer for pl. This is a Xapain bug, but I've put in a workaround.

For the first problem, looks like I need a more robust grouplist comparor -- fixed in git.

done --Joey

Thanks a lot for the rapid fix, Joey! Now my ikiwiki works good for me

BTW, why have you replaced Hyper Estraier by Xapian? It seems that second search engine is faster, but I'm not sure it has the same wide syntax. Also I can't see how to change number of hits per page... --Paweł

Xapian indexes more quickly, and with the perl interface I was able to make updates for changes pages quite efficient. My experience with Hyper Estraier has not been good, with its database often breaking, and it sometimes crashing. Xapian also does a ranked search, and supports searching for specific metadata like "title:foo". --Joey

Thank you very much for the reply! I have never had problems with Hyper Estraier, but I'm not a long-time user of that searching engine. It's good to know about Xapian pros and Hyper Estraier cons. --Paweł