Re: Merging using only fast-forward

[Junio C Hamano <gitster@pobox.com>]

merlyn@stonehenge.com (Randal L. Schwartz) writes:

> Junio implemented a 7-line patch on the IRC channel (calling parts of it
> "for randal" or something, I believe :) to do precisely this.
>
> Perhaps you can test it, and submit it as if it were your idea.  I, for one,
> would use it as well.  I'm doing ugly things with parsing the output of
> git-status right now to achieve the same thing.

The mechanism itself is simple.  

	http://git.pastebin.com/m156a1856

A sane integration is a different story.

We have --ff and --no-ff options to merge.  How should this new
option --ff-only mesh with them?  Perhaps we would want to have
an option --ff that takes three values?

	--ff=never
        --ff=normal
        --ff=only

and have the first one be synonym for existing --no-ff, the second
one to be a synonym for not giving anything (or giving --ff
explicitly), and the third one to be this new mode of operation?