Re: [PATCH] shortlog: prompt when reading from terminal by mistake

> I was trying to see who have been active recently to find GSoC
> mentor candidates by running:
> 
> 	$ git shortlog -s -n --since=4.months | head -n 20
> 
> After waiting for about 20 seconds, I started getting worried,
> thinking that the recent revision traversal updates might have
> had an unintended side effect.
> 
> Not so.  "git shortlog" acts as a filter when no revs are given,
> unlike "git log" which defaults to HEAD.  It was reading from
> its standard input.
> 
> Signed-off-by: Junio C Hamano <junkio@cox.net>

>    Arguably because --since=4.months clearly states I am
>    expecting it to start digging from somewhere, it would be
>    more sensible to default to HEAD in this case.  I suspect it
>    might be as simple as checking argc before we call
>    setup_revisions() and pass "HEAD" as the default parameter to
>    it, but it is getting late here.