Re: Adding git-commit highlight mode?

[Konstantin Kharlamov <Hi-Angel@yandex.ru>]

On Thu, 2025-01-02 at 14:10 -0600, Stefan Kangas wrote:
> Konstantin Kharlamov <Hi-Angel@yandex.ru> writes:
> 
> > On Thu, 2025-01-02 at 21:01 +0200, Eli Zaretskii wrote:
> > > > From: Konstantin Kharlamov <Hi-Angel@yandex.ru>
> > > > Date: Thu, 02 Jan 2025 21:30:53 +0300
> > > > 
> > > > Hi, just wanted to ask this before potentially taking on the
> > > > initiative
> > > > to only find the code will get rejected.
> > > > 
> > > > I think a ballpark estimate of 90% of Git usage among CVSes in
> > > > the
> > > > modern world is fair to assume.
> > > > 
> > > > But Emacs seems to be the only widely popular editor that still
> > > > doesn't
> > > > provide OOTB at least syntax highlight for git-commit format.
> > > > So,
> > > > does
> > > > anyone have opposition to adding a major mode that would be
> > > > bound
> > > > to
> > > > filenames like `COMMIT_EDITMSG` and others, and would provide
> > > > the
> > > > aforementioned highlight?
> 
> It would be great to have something like that in Emacs by default,
> indeed.  Even a simple mode with syntax highlighting would go a long
> way.
> 
> Note that there is some prior work here, see `git-commit-mode' in
> `magit`.  However, AFAIU, we recommend not looking at the
> implementation
> if you want to implement something like it, for reasons of copyright.
> The reason is that once you look at its implementation it's hard to
> write something original enough to be able to copyright assign the
> result to the Free Software Foundation, and even if it is original it
> can still (under some circumstances) be considered a derivative work
> of
> the code you have looked at.

Thank you! Yeah, I figured I shouldn't look at magit for license
reasons,  so I was going to use VSCode's syntax highlight as a
reference¹, since nowadays, at least from looking at other people, it
seems to be the most popular editor, so presumably its support should
be good.

However, for now I'm assuming Jim is taking over the initiative as he
has already written the mode.

1:
https://github.com/microsoft/vscode/tree/2bdb3e9b41bd72048ea2067a350d8536c82fc7f6/extensions/git-base