Actually it fails with or without htdig. Looks like a typo on line 94 of /usr/bin/khc_docbookdig.pl - $kdekdehtmldir should be $kdehtmldir.
-- Kde help search fails too quietly if htdig is not installed https://launchpad.net/bugs/19767 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
