Re: M-x grep should hang if no files specified

[Stefan Monnier]

>> It's very easy if done at the right place: inside GNU grep (rather than
>> inside Emacs).  And it sure should complain: the user specified a search in
>> 0 files, so there's obviously something odd.

>> From grep(1):

>     DESCRIPTION

>     grep searches the named input FILEs (or standard input if no
>     files are named, or the file name - is given)

> Specifying 0 files is absolutely not an error.

Duh, sorry I thought we passed some explicit arg to say "don't use stdin
either", but I know see that we just use process-send-eof for that instead,
so indeed there's no way for grep to know what's going on.


        Stefan