GNU bug report logs - #78638
30.1; When editing a remote file owned by another user, Tramp signals an error because it cannot change the file mode

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From: Eli Zaretskii <eliz <at> gnu.org>
To: Michael McClennen <mmcclenn <at> geology.wisc.edu>, Michael Albinus <michael.albinus <at> gmx.de>
Cc: 78638 <at> debbugs.gnu.org
Subject: bug#78638: 30.1; When editing a remote file owned by another user, Tramp signals an error because it cannot change the file mode
Date: Sun, 01 Jun 2025 08:19:45 +0300

> From: Michael McClennen <mmcclenn <at> geology.wisc.edu>
> CC: "78638 <at> debbugs.gnu.org" <78638 <at> debbugs.gnu.org>
> Date: Sat, 31 May 2025 20:12:07 +0000
> 
> I set the value of ‘backup-by-copying-when-privileged-mismatched’ to 10000, and the error still occurs. I then set ‘backup-by-copying’ to t, and the error still occurs. I checked the *Messages* buffer, and it reports that Emacs is using copying for this file. This is definitely an error in Tramp, not the result of proper Emacs behavior.

Thanks, I agree with your conclusion.

Michael, could you please look into this?

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