Re: Forcing --no-ff on pull

[Stephen Haberman <stephen@exigencecorp.com>]

> > $ git config branch.stable.mergeoptions "--no-ff"
> 
> I recall stumbling across this a while ago looking at the git-config(1)
> man page, but this isn't /quite/ what we need.
> 
> I'm talking about forcing for *every* pull, it's a safe assumption to
> make that we want a merge commit every time somebody fast-forwards a
> branch. 
> 
> The only way I could think to make use of branch.<name>.mergeoptions
> would be to automagically set it up in a "pre-merge" hook, but alas
> post-merge exists but not pre-merge.

I had done something like this with a post-checkout hook. After checking
out any branch, the hook sets various branch.<name>.options.

Also, I wrote a hook to enforce "only no-ff commits can move stable" and
other fun stuff. It's out on github, in a semi-documented/unannounced
project with the email/trac/etc. hooks we put in place:

http://github.com/stephenh/gc/tree/master/server/update-stable

- Stephen