Re: [PATCH] git-filter-branch.sh: Allow running in bare repositories

Petr Baudis [off-list ref] writes:

  um, oops. I actually never got to know these by heart since I learnt
to expliciply group the expressions early on. I guess my only excuse is
that I've stumbled at 0bdf93cbf earlier and understood it the _wrong_
way around since I'm getting really sleepy. ;-)

  I still think my change improves the code readibility so it could be
kept, but I'm fairly neutral on this.

I cannot be neutral when a patch introduces unnecessary fork.

The quality of shell scripts in git.git seems to have deteriorated over
time but I do not think we would want to spend too much maintainer time to
go back and fix all of them.  Please don't make things worse, at least.