Was looking at beagle’s bugs in Debian and found an interesting wishlist bug called “Index installed documentation”.
The idea is to use beagle to index /usr/share/doc, /usr/{local,}share/man, and /usr/{local,}share/info . This can be done going through Desktop–>Settings–>Search&Index (aka beagle-settings)
Now, when will beagle enter Testing, hmm?