GNU bug report logs - #64325
ACL error

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

From: Charles Millar <millarc <at> verizon.net>
To: bug-gnu-emacs <at> gnu.org
Subject: ACL error
Date: Wed, 28 Jun 2023 09:15:16 -0400

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

Please see the attached debug on error which is generated when I attempt 
to save a modified buffer/file, regardless of mode.

Emacs version - GNU Emacs 30.0.50 (build 36, x86_64-pc-linux-gnu, GTK+ 
Version 3.24.36, cairo version 1.16.0) of 2023-06-28

Charlie Millar

[Debugger-2023-06-28 (text/plain, attachment)]

Message #8 received at 64325 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Charles Millar <millarc <at> verizon.net>
Cc: 64325 <at> debbugs.gnu.org
Subject: Re: bug#64325: ACL error
Date: Thu, 29 Jun 2023 08:47:29 +0300

> Date: Wed, 28 Jun 2023 09:15:16 -0400
> From:  Charles Millar via "Bug reports for GNU Emacs,
>  the Swiss army knife of text editors" <bug-gnu-emacs <at> gnu.org>
> 
> Please see the attached debug on error which is generated when I attempt 
> to save a modified buffer/file, regardless of mode.

If, as I understand, you set debug-on-error non-nil when saving the
buffer, then this is normal: it means that the volume you have mounted
in /mnt/ doesn't support ACLs.  Emacs normally hides the ACL-related
errors and silently falls back on using set-file-modes, but setting
debug-on-error non-nil disables that.

So I don't think there's a bug here if you set debug-on-error.

If this happens even if you do not set debug-on-error, then I'd ask
you to step in Edebug through the code in backup-buffer-copy and tell
how come the with-demoted-errors form there doesn't do its job of
catching errors.

Thanks.

Message #13 received at 64325-done <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: millarc <at> verizon.net
Cc: 64325-done <at> debbugs.gnu.org
Subject: Re: bug#64325: ACL error
Date: Thu, 06 Jul 2023 09:40:57 +0300

> Cc: 64325 <at> debbugs.gnu.org
> Date: Thu, 29 Jun 2023 08:47:29 +0300
> From: Eli Zaretskii <eliz <at> gnu.org>
> 
> > Date: Wed, 28 Jun 2023 09:15:16 -0400
> > From:  Charles Millar via "Bug reports for GNU Emacs,
> >  the Swiss army knife of text editors" <bug-gnu-emacs <at> gnu.org>
> > 
> > Please see the attached debug on error which is generated when I attempt 
> > to save a modified buffer/file, regardless of mode.
> 
> If, as I understand, you set debug-on-error non-nil when saving the
> buffer, then this is normal: it means that the volume you have mounted
> in /mnt/ doesn't support ACLs.  Emacs normally hides the ACL-related
> errors and silently falls back on using set-file-modes, but setting
> debug-on-error non-nil disables that.
> 
> So I don't think there's a bug here if you set debug-on-error.
> 
> If this happens even if you do not set debug-on-error, then I'd ask
> you to step in Edebug through the code in backup-buffer-copy and tell
> how come the with-demoted-errors form there doesn't do its job of
> catching errors.

No further comments, so I presume the issue can be closed now.

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