RE: Feature freezes and Emacs 25

[Drew Adams]

> > 1. Document when to remove obsolete features.  For example, "if a
> >    feature is declared obsolete in version `major.minor', it will
> >    continue to work in versions `major.minor' and `major+1.minor' but
> >    raise warnings, and it will be removed in version `major+2.minor'".
> >    I don't think we have a policy for removing obsolete features
> >    currently, but IMHO it would be good to have one.
> 
> I'm not sure a fixed policy of this kind is possible.  Minor features
> can be removed quickly, not-so-minor ones not so quickly.

There should _never_ be such a policy to remove an obsolete feature.
Each deprecation, and each subsequent removal of its support, should
be handled on a case-by-case basis.  Anything else is madness.