When running omega by hand in the .ikiwiki/xapian directory, providing queries on the command-line, runs correctly but again provides no results.
I found that Debian stable is currently shipping 1.2.3, and on a hunch, I built that version, and searching now works fine. This looks like the usage of xapian's query template has changed somewhere between 1.2.3 and 1.2.7. Someone more familiar with xapian's query template language should be able to figure out what needs to be changed more specifically.
+
+> Debian has 1.2.7 now, and I have it installed and searching is working
+> fine with it. --[[Joey]]