Re: Add "git grep" helper

Linus Torvalds [off-list ref] writes:

Very convenient shorthand for

	git-ls-files [file-patterns] | xargs grep <pattern>

which I tend to do all the time.

Great minds think alike.  I stopped using 'grep-find' in Emacs
and use "git-ls-fiels -z | xargs -0 grep" instead these days.
Thanks for the patch; applied.

I do not much care about other grep flags but I think you forgot
to special case '-e', so what is in the "master" branch has one
extra commit on top of it for that (it does not seem to have
percolated down yet).