grep(1) - large bug

[Col. G. L. Sicherman]

Reproduce by:	echo bug | grep \[

What happens:	same as if you typed 'yes "RE botch"'

Why:		endless loop in advance() in grep.c

Fix:		do something sane in the default clause of the switch()

_._
"On behalf of Bogopolis, I am honored to accept this ... Wait a minute!
  This is not the World's Largest Diamond!"
"Of course not, Captain BUFFOON!  It's a big chunk of VOOPTONITE!"
"Auggggh! Urggggh! Gasp! ... And you're not Commander Pinkney, the Brazil-
  ian explorer! You're ... you're ... you're ..."
"Ha HO ho haw! HAW HAW yak yak yak!"
-- 
Col. G. L. Sicherman
UU: ...{rocksvax|decvax}!sunybcs!colonel
CS: colonel at buffalo-cs
BI: csdsicher at sunyabva