bug#68691: 30.0.50; [WISHLIST] Make it easier to conform to desired commit message format

[Stefan Kangas <stefankangas@gmail.com>]

Po Lu <luangruo@yahoo.com> writes:

> I think part of our position is that it is far too easy to write
> uninformative commit messages when one is not being forced to mentally
> review the commit's contents.  As with any other form of discipline,
> maintaining ChangeLog discipline is an end in itself, not necessarily
> something that might produce an immediate benefit.

I'm not buying it, sorry.  Useless commit messages are common in all GNU
projects, including Emacs.

It does not make it better that the GNU ChangeLog format is so noisy
that it's hard to pick out the good ones from the bad ones.  It makes it
easy to disguise a very bad commit message as a good one.

> A hook run before each commit is a good idea, and I plan to study how
> they are written.

We do not want a git hook for this, since we don't ask that all commits
follow this format.  It would be too heavy-handed, not to mention
annoying when doing development locally.

The request is for an Emacs minor mode or command that can help users
follow the format.