GNU bug report logs - #62427
tab-bar-new-tab-to now handles cases with multiple side-windows

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From: Juri Linkov <juri <at> linkov.net>
To: Benson Chu <bensonchu457 <at> fastmail.com>
Cc: Eli Zaretskii <eliz <at> gnu.org>, 62427 <at> debbugs.gnu.org
Subject: bug#62427: tab-bar-new-tab-to now handles cases with multiple side-windows
Date: Sun, 02 Apr 2023 21:20:36 +0300

>>> Debugger entered--Lisp error: (error "Specified root is not an ancestor of specified window")
>>
>> Sure, I would be happy to investigate the problem! Is there a way to
>> reproduce this bug? I've personally never seen it before.
>
> Sorry, this bug is not reproducible.  It comes out of the blue.
> And has such consequences that there is no recursive edit,
> but you still can switch to the minibuffer window that has no prompt
> with 'C-x o'.

Ok, now here is 100% reproducible case:

0. emacs-29 -Q
1. (setq debug-on-error t enable-recursive-minibuffers t)
2. M-:   (or any other prompt like 'M-x')
3. Resize the minibuffer window e.g. with the mouse to at least 4 lines high
4. M-x windmove-swap-states-up RET
5. Click on the bottom window
6. C-x t 2
7. Click on the bottom window
8. C-x t 2

Debugger entered--Lisp error: (error "Specified root is not an ancestor of specified win...")
  delete-other-windows-internal(#<window 4 on *scratch*> #<window 7 on  *Minibuf-1*>)
  delete-other-windows()
  tab-bar-new-tab-to()
  tab-new(nil)

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