[PATCH 2 of 2 RFC] histedit: add experimental config for using the first word of the commit

[Sean Farley]

Jun Wu <quark at fb.com> writes:

> I like the idea and this looks good to me.

Thanks!

> "autohistedit" sounds a bit too broad. But it's in "experimental" so doesn't
> matter much. When we move it to "histedit" I vote something like
> "histedit.autoverb".

Sure, autoverb sounds fine to me (fine with me to name it
experimental.autoverb since that seems fairly unique).