I think I've found a legitate bug. /docommand doesn't seem to work for the command /r which is the reply command.
"/docommand /r" does nothing
"/docommand /re" returns "I don't see anyone by that name around here"
"/docommand /rep" works
I know there is a very simple fix (use /rep or /reply) but I thought I would let you guys know anyway.

