I didn't find Michael's crasher, but I did find a couple of minor
problems:
knight's saddled pony wasn't found in the file lookup either though
there is an entry for pony ("tame saddled <foo>" stripped off "tame "
but not "saddled "; "saddled <foo>" would only be found of there was
a wildcard entry key of "*<foo>", like "*horse" to catch both horse
and warhorse);
"wombat" matched the bat entry rather than reporting an unknown
entity.