Forcing --no-ff on pull

["R. Tyler Ballance" <tyler@slide.com>]

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While I'm in the email writing mood tonight, I figured I'd ask this
question.

We've recently moved a giant tree with a number of developers over to
Git from Subversion. One of the biggest stumbling points we have right
now is the concept of a "fast-forward", insofar that it's "screwed" us a
couple times (see: people not RTFM'ing then crying that Git is broken
because they cannot RTFM ;))

The most common use-case involves a user merging a project branch into a
stabilization branch (`git checkout stable && git pull . project`) in
such a way that no merge commit is generated. Of course, without
thinking they'll push these changes up to the centralized repository.
Not 15 minutes later they realize "ruh roh! I didn't want to do that"
and become very frustrated that they have to resort to asking for help
or hand-reverting N number of commits. 

Is there a header macro I can define or a config option I could define
to make --no-ff on `git pull` implicit instead of explicit? Making sure
we are always generating merge commits as a "just-in-case" safe guard
about merge-happy developers who think after hitting enter? :)


Cheers
-- 
-R. Tyler Ballance
Slide, Inc.

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