GNU bug report logs - #62162
29.0.60; xref.el doesn't compile on Emacs 26, because multi-pair setq-local

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From: Dmitry Gutov <dgutov <at> yandex.ru>
To: João Távora <joaotavora <at> gmail.com>, Juri Linkov <juri <at> linkov.net>
Cc: 62162 <at> debbugs.gnu.org
Subject: bug#62162: 29.0.60; xref.el doesn't compile on Emacs 26, because multi-pair setq-local
Date: Tue, 14 Mar 2023 02:29:37 +0200

On 14/03/2023 01:38, João Távora wrote:
> reopen 62162
> thanks
> 
> Juri Linkov <juri <at> linkov.net> writes:
> 
>> close 62162 29.0.60
>> thanks
>>
>>> I'm reasonably sure that one of the failures has to do with a multi-pair
>>> call to `setq-local` in xref.el which appeared in this commit
>>>
>>>    commit 3573ebfa6d94411257ffefdf9eb72f508dbe502c
>>>    Author: Juri Linkov <juri <at> linkov.net>
>>>    Date:   Wed Nov 23 10:38:28 2022 +0200
>>>
>>> That construct should not be used in xref.el because it isn't available
>>> on Emacs 26, which xref purports to require.  In turn, this breaks Eglot
>>> (and any other packge requiring xref) on those platforms.
>>
>> Now this is fixed in emacs-29.
> 
> Thanks but, I think this should have been fixed in master instead,
> because that's where the :core packages are built from, AFAIK, and
> emacs-29 doesn't have a problem with that construct.  It'll make no
> difference soon enough, hopefully.

True enough, on both counts.

>> I hope Dmitry will decide when to bump the xref package version.
> 
> I think you could have bumped the version, too.  Is there any reason not
> to?

Extra courtesy never hurts, and after I responded (on emacs-devel) Juri 
bumped the version 40 minutes after the commit with the fix.

> Closing this is premature, as the problem stands: the upcoming Eglot
> 1.12 will have this problem on Emacs 26.  Re-opening.  I'll bump xref.el
> myself in a day or so if no-one beats me to it, and then close.

We're now waiting for the changes to be merged to master. You could do 
it yourself, if you are in a hurry.

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