Re: Emacs git-mode feature request: support fill-paragraph correctly

Peter Simons [off-list ref] writes:

[...]

The buffer is in "log-edit" mode.

Ah, OK.  That makes sense.

 > In that case you could stick this in your .emacs if you wanted to
 > use message-mode:
 >
 > (setq auto-mode-alist (cons '("COMMIT_EDITMSG" . message-mode) auto-mode-alist))

Unfortunately, it's not that easy.

True.  I don't use git-mode (well, not much).  I use git commit from
the command line, which runs emacsclient as its editor.

I'm not an Emacs expert, but I'd assume that switching into a
different mode would change the meaning of C-c C-c.

Yep.  Quite likely other things, too.

OK, something like this:

(add-hook 'log-edit-mode-hook (lambda ()
		(let ((regexp "--text follows this line--$\\|[  ]*$\\|-- $\\|---+$\\|^\f$\\|.*wrote:$\\|\\(\\([         ]*[-_.[:word:]]+>+\\|[  ]*[]>|}+]\\)+\\)[  ]*$\\|<#!*/?\\(multipart\\|part\\|external\\|mml\\|secure\\)"))
                   (setq paragraph-start regexp
                         paragraph-separate regexp)))

I copied the regexp from the value in message-mode.  (In a junk buffer
use M-x message-mode, then C-h v paragraph-start and copy & paste.)

I imagine large parts of the regexp aren't relevant for your purposes
so you could remove them if you wanted.  You might also define a
function rather than using lambda---that would make it a bit easier to
test.