GNU bug report logs - #64281
[Feature Request] Recognize “#” syntax when reading local-variables

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Shynur Xie <one.last.kiss <at> outlook.com>
Subject: bug#64281: closed (Re: bug#64281: [Feature Request] Recognize
 “#” syntax)
Date: Mon, 26 Jun 2023 12:22:02 +0000

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Your bug report

#64281: [Feature Request] Recognize “#” syntax when reading local-variables

which was filed against the emacs package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 64281 <at> debbugs.gnu.org.

-- 
64281: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=64281
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: Eli Zaretskii <eliz <at> gnu.org>
To: Stefan Monnier <monnier <at> iro.umontreal.ca>
Cc: one.last.kiss <at> outlook.com, 64281-done <at> debbugs.gnu.org
Subject: Re: bug#64281: [Feature Request] Recognize “#”
 syntax
Date: Mon, 26 Jun 2023 15:21:36 +0300

> From: Stefan Monnier <monnier <at> iro.umontreal.ca>
> Cc: Shynur Xie <one.last.kiss <at> outlook.com>,  64281 <at> debbugs.gnu.org
> Date: Sun, 25 Jun 2023 11:46:13 -0400
> 
> >> It seems that this is a intentional behavior:
> >>
> >> <https://www.gnu.org/software/emacs/manual/html_node/elisp/File-Local-Variables.html>:
> >>
> >> > For additional safety, read-circle is temporarily bound to nil when
> >> > Emacs reads file-local variables.
> >>
> >> No further question; can be closed now.
> >>
> >> (I wonder if we can treat ~/.emacs.d/.dir-locals.el specially, or tell
> >>  Emacs which files can be treated specially -- enable read-circle.)
> >
> > Stefan, any comments before we close this?
> 
> file/dir-local variables are dangerous enough as it is, I think.  If you
> want to do better, you can use an actual ELisp file.

Agreed.

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From: Shynur Xie <one.last.kiss <at> outlook.com>
To: "bug-gnu-emacs <at> gnu.org" <bug-gnu-emacs <at> gnu.org>
Subject: [Feature Request] Recognize “#” syntax when reading local-variables
Date: Sun, 25 Jun 2023 11:54:02 +0000

For example, if I want to use UTF-8-UNIX only for files directly under
directory DIR, and those under DIR/SUBDIR/ or its subdirectories, I
can write this way:

    ((nil . ((subdirs . nil)
               . #1=((coding . utf-8-unix))))
     ("SUBDIR" . ((nil . #1#))))

If “#” can be recognized when reading local-variables, we can write
“((coding . utf-8-unix))” only once.  Thanks.

--
shynur

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