GNU bug report logs - #77402
31.0.50; Tramp: file-writable-p broken

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Package: emacs;

Reported by: Gerd Möllmann <gerd.moellmann <at> gmail.com>

Date: Mon, 31 Mar 2025 08:22:02 UTC

Severity: normal

Found in version 31.0.50

Fixed in version 30.2

Done: Michael Albinus <michael.albinus <at> gmx.de>

Bug is archived. No further changes may be made.

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From: Gerd Möllmann <gerd.moellmann <at> gmail.com>
To: 77402 <at> debbugs.gnu.org
Subject: bug#77402: 31.0.50; Tramp: file-writable-p broken
Date: Mon, 31 Mar 2025 10:21:25 +0200

In current master, Magit over Tramp/ssh stopped working. The first thing
I noticed in the log with tramp-verbose == 6 is

  08:33:37.401799 tramp-get-remote-tmpdir (1) # File error: Directory /ssh:mini:/tmp not accessible

This is caused by file-writable-p returning nil for the remote /tmp dir;
/tmp is a symlink to private/tmp on macOS.

I could bisect this to

  b8104dadbf285d12c356d4cddd28ac3eaf05f263 is the first bad commit
  commit b8104dadbf285d12c356d4cddd28ac3eaf05f263 (HEAD)
  Author: Michael Albinus <michael.albinus <at> gmx.de>
  Date:   Sun Mar 16 14:17:38 2025 +0100
      Tramp: Handle symlinks to non-existing targets better

Before this change

  (tramp-autoload-file-name-handler 'file-writable-p "/ssh:mini:/tmp")
  => t

After the change, it returns nil.
This bug report was last modified 52 days ago.

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