bug#19483: 25.0.50; out-of-date doc and Commentary in `font-lock' wrt `font-lock-syntactic-keywords'

[Drew Adams <drew.adams@oracle.com>]

> tags 19483 notabug
> thanks
> 
> > `C-h v font-lock-syntactic-keywords' says that the variable is
> > obsolete since 24.1.
> 
> That's right.
> 
> > But in font-lock.el, the code, multiple doc strings, and
> > the Commentary all rely on it.
> 
> No, they just keep supporting it, because it's only "obsolete" and
> not "removed".

The doc and Commentary should reflect the fact that it has been
declared "obsolete".  That's the point.

> Do you really want to advocate we remove features right away when we
> decide they're obsolete?

Strawman, again.  No one suggested that you remove any feature.

Read the bug report.  It's about the doc (including Commentary). 

When you deprecate something, the doc for it should state that it
is deprecated.  Everywhere.

That the doc was not brought up to date about this as soon as
the status changed to deprecated was a doc bug 4 releases ago.
The bug is still there.

Emacs is the self-documenting editor.  It should tell users
about itself accurately.