GNU bug report logs - #80128
[PATCH] vc: Fix applying diff buffers to other working trees

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Package: emacs;

Reported by: "Paul D. Nelson" <ultrono <at> gmail.com>

Date: Sun, 4 Jan 2026 15:25:02 UTC

Severity: normal

Tags: patch

Fixed in version 31.1

Done: Sean Whitton <spwhitton <at> spwhitton.name>

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Report forwarded to spwhitton <at> spwhitton.name, bug-gnu-emacs <at> gnu.org:
bug#80128; Package emacs. (Sun, 04 Jan 2026 15:25:02 GMT) Full text and rfc822 format available.
Acknowledgement sent to "Paul D. Nelson" <ultrono <at> gmail.com>:
New bug report received and forwarded. Copy sent to spwhitton <at> spwhitton.name, bug-gnu-emacs <at> gnu.org. (Sun, 04 Jan 2026 15:25:02 GMT) Full text and rfc822 format available.

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

From: "Paul D. Nelson" <ultrono <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: [PATCH] vc: Fix applying diff buffers to other working trees
Date: Sun, 04 Jan 2026 23:23:56 +0800

[Message part 1 (text/plain, inline)]
On a recent master, with emacs -Q:

1. (setopt diff-default-read-only t)
2. Create a git worktree.  Make some changes in it.
3. Use C-x v D to create a diff buffer showing those changes.
4. Try using C-x v w a to apply those changes to some other worktree.

This yields the error:

  vc-apply-to-other-working-tree: Buffer is read-only: #<killed buffer>


[0001-vc-Fix-applying-diff-buffers-to-working-trees.patch (text/x-patch, attachment)]
Reply sent to Sean Whitton <spwhitton <at> spwhitton.name>:
You have taken responsibility. (Sat, 10 Jan 2026 12:09:03 GMT) Full text and rfc822 format available.
Notification sent to "Paul D. Nelson" <ultrono <at> gmail.com>:
bug acknowledged by developer. (Sat, 10 Jan 2026 12:09:03 GMT) Full text and rfc822 format available.

Message #10 received at 80128-done <at> debbugs.gnu.org (full text, mbox):

From: Sean Whitton <spwhitton <at> spwhitton.name>
To: "Paul D. Nelson" <ultrono <at> gmail.com>
Cc: 80128-done <at> debbugs.gnu.org
Subject: Re: bug#80128: [PATCH] vc: Fix applying diff buffers to other
 working trees
Date: Sat, 10 Jan 2026 12:08:22 +0000

Version: 31.1

Hello,

Paul D. Nelson [04/Jan 11:23pm +08] wrote:
> On a recent master, with emacs -Q:
>
> 1. (setopt diff-default-read-only t)
> 2. Create a git worktree.  Make some changes in it.
> 3. Use C-x v D to create a diff buffer showing those changes.
> 4. Try using C-x v w a to apply those changes to some other worktree.
>
> This yields the error:
>
>   vc-apply-to-other-working-tree: Buffer is read-only: #<killed buffer>

Thanks.  I'd prefer to fix this by binding inhibit-read-only instead of
relying on the implicit ordering of the forms, so I've done that, and
closing the bug.

-- 
Sean Whitton
This bug report was last modified 1 day ago.

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