Paul Eggert <eggert@cs.ucla.edu> schrieb am So., 31. Dez. 2017 um 00:07 Uhr:

> Philipp Stephani wrote:
> > As discussed in
> > http://lists.gnu.org/archive/html/emacs-devel/2017-10/msg00051.html, we
> > (mostly) agreed to first turn them into errors
>
> And we've done that in Emacs 26, right?


No, only in master (i.e. Emacs 27), see
http://lists.gnu.org/archive/html/emacs-devel/2017-10/msg00056.html


> So in Emacs 27 we can remove support for
> old-style backquotes;


Only in Emacs 28, because 26 will still have old-style backquotes only.


> we don't need a new variable to enable old-style
> backquotes dynamically.
>

My patch conditionally enables new-style backquotes; there's no way to
re-enable old-style backquotes once they generate errors. The assumption is
that everyone should migrate to new-style once they get the errors, and not
re-enable old-style.