Re: [PATCH] format-patch let -k override a config-specified format.numbered

> Let a command-line --keep-subject (-k) override a config-specified
> format.numbered (--numbered (-n)), rather than provoking the
> "-n and -k are mutually exclusive" failure.
> * t4021-format-patch-numbered.sh: Test for the above
> ---

> Here's a quick demo of the problem:
>
>   $ git config format.numbered true
>   $ git format-patch --stdout -1 -k > /dev/null
>   fatal: -n and -k are mutually exclusive.
>
> This started when a colleague reported that "git rebase master" was failing
> with a "fatal: -n and -k are mutually exclusive".  Stephen Tweedie discovered
> that it was due to the format.numbered=true setting in ~/.gitconfig
> conflicting with the -k of the format-patch command run as part of
> the rebase operation.  Here's a fix.
>
> Stephen suggested an alternate patch in which rather than adding a
> new variable, you'd use "numbered = -1" to indicate that the setting
> originated in config.  Let me know if you'd prefer that.