bug#66317: Project mode-line

[Dmitry Gutov]

On 09/10/2023 21:48, Juri Linkov wrote:
> > > > > Agreed.  No need to support it in older versions.  Moreover,
> > > > > I'm trying to add another option to join project and vc indicators
> > > > > on the mode-line that won't be possible to support in older versions.
> > > > Then that needs to be explained in the docstring. project.el is installable
> > > > in older versions.
> > > Hopefully I explained this sufficiently well in the docstring
> > > both for users of older versions and users who customized the
> > > default mode line.
> > Not sure: I imagine that most users don't customize mode-line-format
> > themselves, and thus don't know which contents it has.
> >
> > I would append some clarification that in Emacs 30 the mode-line has that
> > element by default.
> I'm not sure if this helps because a user might run Emacs 30
> and still using some package that heavily modifies the mode line.
> This will puzzle the user: why it doesn't work in Emacs 30
> as documented.

Hence "by default".

Mode-line package authors might be helped out by this explanation as well.