refactored alias.c heavily especially substituted the loop-based alias_expand() with a recursive approach. Now alias_expand() wraps alias_one() which recursively expands aliases. In principle the ``data processing'' is the same but now it's clearer structured and thus easier to understand IMO. The loop might have been faster but I don't care for speed -- the most simple solution is the best. It's fast enough, that is sufficient.

# mailq.wmbiffrc for masqmail by Paolo

label.4=mailq
path.4=shell:::mailq|grep ^[[:graph:]]|grep -v empty|wc -l
interval.4=600
notify.4=beep
notify.4=true
action.4=(echo "messages in the queue:";mailq|grep ^[[:graph:]]|grep -v empty)|xmessage -center -buttons vaBen -file -