GNU bug report logs - #38835
27; Recreated *scratch* buffer has lexical-binding = nil

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Mattias Engdegård <mattiase <at> acm.org>
To: bug-gnu-emacs <at> gnu.org
Subject: 27; Recreated *scratch* buffer has lexical-binding = nil
Date: Tue, 31 Dec 2019 16:52:18 +0100

The standard *scratch* buffer is blessed with lexical-binding = t, but if killed and recreated via C-x b *scratch* RET, the new buffer isn't.

Not sure where this logic belongs; the *scratch* handling seems a bit spread out. In Fset_buffer_major_mode?

Message #8 received at 38835 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Mattias Engdegård <mattiase <at> acm.org>
Cc: 38835 <at> debbugs.gnu.org
Subject: Re: bug#38835: 27;
 Recreated *scratch* buffer has lexical-binding = nil
Date: Wed, 01 Jan 2020 18:14:38 +0200

> From: Mattias Engdegård <mattiase <at> acm.org>
> Date: Tue, 31 Dec 2019 16:52:18 +0100
> 
> The standard *scratch* buffer is blessed with lexical-binding = t, but if killed and recreated via C-x b *scratch* RET, the new buffer isn't.
> 
> Not sure where this logic belongs; the *scratch* handling seems a bit spread out. In Fset_buffer_major_mode?

Maybe we should have a command to recreate *scratch*, and call it from
startup.el?  Then that command could do this.

Or maybe we should decide that lisp-interaction-mode should do this
for any buffer?

Message #11 received at 38835 <at> debbugs.gnu.org (full text, mbox):

From: martin rudalics <rudalics <at> gmx.at>
To: Eli Zaretskii <eliz <at> gnu.org>, Mattias Engdegård
 <mattiase <at> acm.org>
Cc: 38835 <at> debbugs.gnu.org
Subject: Re: bug#38835: 27; Recreated *scratch* buffer has lexical-binding =
 nil
Date: Wed, 1 Jan 2020 18:49:43 +0100

> Maybe we should have a command to recreate *scratch*, and call it from
> startup.el?  Then that command could do this.

'other_buffer_safely' would need it too.

martin

Message #14 received at 38835 <at> debbugs.gnu.org (full text, mbox):

From: Mattias Engdegård <mattiase <at> acm.org>
To: Eli Zaretskii <eliz <at> gnu.org>, martin rudalics <rudalics <at> gmx.at>
Cc: 38835 <at> debbugs.gnu.org
Subject: Re: bug#38835: 27; Recreated *scratch* buffer has lexical-binding =
 nil
Date: Mon, 13 Jan 2020 14:57:29 +0100

[Message part 1 (text/plain, inline)]

1 jan. 2020 kl. 17.14 skrev Eli Zaretskii <eliz <at> gnu.org>:

> Or maybe we should decide that lisp-interaction-mode should do this
> for any buffer?

Yes, that seems to be the best and simplest choice.  Patch OK for emacs-27?

[0001-Always-use-lexical-binding-in-lisp-interaction-mode-.patch (application/octet-stream, attachment)]

Message #17 received at 38835 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Mattias Engdegård <mattiase <at> acm.org>
Cc: rudalics <at> gmx.at, 38835 <at> debbugs.gnu.org
Subject: Re: bug#38835: 27; Recreated *scratch* buffer has lexical-binding =
 nil
Date: Mon, 13 Jan 2020 18:30:33 +0200

> From: Mattias Engdegård <mattiase <at> acm.org>
> Date: Mon, 13 Jan 2020 14:57:29 +0100
> Cc: 38835 <at> debbugs.gnu.org
> 
> > Or maybe we should decide that lisp-interaction-mode should do this
> > for any buffer?
> 
> Yes, that seems to be the best and simplest choice.  Patch OK for emacs-27?

Yes, but this needs a NEWS entry, and please see if we say enough
about lisp-interaction-mode and/or lexical-binding to mention this in
the manual as well.

Thanks.

Message #20 received at 38835 <at> debbugs.gnu.org (full text, mbox):

From: Mattias Engdegård <mattiase <at> acm.org>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: rudalics <at> gmx.at, 38835 <at> debbugs.gnu.org
Subject: Re: bug#38835: 27; Recreated *scratch* buffer has lexical-binding =
 nil
Date: Mon, 13 Jan 2020 18:04:22 +0100

[Message part 1 (text/plain, inline)]

13 jan. 2020 kl. 17.30 skrev Eli Zaretskii <eliz <at> gnu.org>:

> Yes, but this needs a NEWS entry, and please see if we say enough
> about lisp-interaction-mode and/or lexical-binding to mention this in
> the manual as well.

New patch. The existing NEWS entry was rephrased slightly, and a sentence added to the elisp manual.

[0001-Always-use-lexical-binding-in-lisp-interaction-mode-.patch (application/octet-stream, attachment)]

Message #23 received at 38835 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Mattias Engdegård <mattiase <at> acm.org>
Cc: rudalics <at> gmx.at, 38835 <at> debbugs.gnu.org
Subject: Re: bug#38835: 27; Recreated *scratch* buffer has lexical-binding =
 nil
Date: Mon, 13 Jan 2020 20:38:04 +0200

> From: Mattias Engdegård <mattiase <at> acm.org>
> Date: Mon, 13 Jan 2020 18:04:22 +0100
> Cc: rudalics <at> gmx.at, 38835 <at> debbugs.gnu.org
> 
> > Yes, but this needs a NEWS entry, and please see if we say enough
> > about lisp-interaction-mode and/or lexical-binding to mention this in
> > the manual as well.
> 
> New patch. The existing NEWS entry was rephrased slightly, and a sentence added to the elisp manual.

Thanks, LGTM.

Message #28 received at 38835-done <at> debbugs.gnu.org (full text, mbox):

From: Mattias Engdegård <mattiase <at> acm.org>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: martin rudalics <rudalics <at> gmx.at>, 38835-done <at> debbugs.gnu.org
Subject: Re: bug#38835: 27; Recreated *scratch* buffer has lexical-binding =
 nil
Date: Mon, 13 Jan 2020 19:54:18 +0100

Thank you, pushed to emacs-27.

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