Subject: bug#60660: Support git-formatted patches in diff-mode

From: Juri Linkov <[email-masked]>
Date: Mon, 09 Jan 2023 09:54:54 +0200

>> This patch for emacs-29 fixes this bug, and the rest of fontification
>> could be implemented in master.
>
> OK for the emacs-29 branch

Pushed to the emacs-29 branch.

> (although I'm surprised that diff-beginning-of-hunk can return
> a position that is not before point).

Indeed, strange to see this in 'diff-beginning-of-hunk':

      (cond ...
        ((re-search-backward regexp nil t)) ; In the middle of a hunk.
        ((re-search-forward regexp nil t) ; At first hunk header.
                    =======

Need to experiment more with this in master.