Universal FGREP bug

[Henry Spencer]

> I've just discovered what appears to be a "day 1" bug in fgrep.  Its
> present in our V7, SYS III, and SYS 5 sources, so its probably present
> in all fgrep sources out there.

This may be one of those cases where an option is undocumented because
it doesn't work.  Note that the V7 manual page says "(grep only)" for the
-y option, i.e. it claims that fgrep doesn't take -y.

(For anyone mystified by this discussion:  -y is the "dualcase" option
that makes lowercase pattern letters match either lowercase or uppercase
data letters.)
-- 
				Henry Spencer @ U of Toronto Zoology
				{allegra,ihnp4,linus,decvax}!utzoo!henry