GNU bug report logs - #26624
26.0.50; Generalized variable `buffer-local-value' does't restore local flag

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From: Philipp Stephani <p.stephani2 <at> gmail.com>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: Michael Heerdegen <michael_heerdegen <at> web.de>, 26624 <at> debbugs.gnu.org, npostavs <at> users.sourceforge.net
Subject: bug#26624: 26.0.50; Generalized variable `buffer-local-value' does't restore local flag
Date: Fri, 29 Dec 2017 16:20:49 +0000

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Eli Zaretskii <eliz <at> gnu.org> schrieb am Fr., 29. Dez. 2017 um 17:15 Uhr:

> > From: Michael Heerdegen <michael_heerdegen <at> web.de>
> > Cc: p.stephani2 <at> gmail.com,  26624 <at> debbugs.gnu.org,
> npostavs <at> users.sourceforge.net
> > Date: Fri, 29 Dec 2017 15:08:41 +0100
> >
> > Eli Zaretskii <eliz <at> gnu.org> writes:
> >
> > > Does this warning pop up during bootstrap, and if so, how many times?
> >
> > It currently would pop up five times:
> >
> > | ../lisp/electric.el:Warning: Warning: obsolete gv-setter:
> ‘buffer-local-value’
> > | --------------------
> > | ../lisp/electric.el:Warning: Warning: obsolete gv-setter:
> ‘buffer-local-value’
> > | --------------------
> > | electric.el:350:40:Warning: Warning: obsolete gv-setter:
> ‘buffer-local-value’
> > | --------------------
> > | electric.el:580:39:Warning: Warning: obsolete gv-setter:
> ‘buffer-local-value’
> > | --------------------
> > | elec-pair.el:608:38:Warning: Warning: obsolete gv-setter:
> ‘buffer-local-value’
> >
> >
> > Yes, these would need to be treated.
>
> Can we treat them as part of fixing this issue?
>

Yes, but I think changing them should be a separate commit because it's not
straightforward.
These are all modes that can be locally or globally enabled. I think
typically such modes would be defined using `define-minor-mode` and
`define-globalized-minor-mode`, but the electric modes are defined the
other way round, i.e. the main modes are global, and then there are local
modes that use `buffer-local-value` as mode variable. I'd suggest to turn
this around to use `define-minor-mode` for the local modes and
`define-globalized-minor-mode` for the global ones. Would that have any
downsides?

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