bug#81589: 31.0.91; Regression: window-buffer-change-functions no longer firing on set-window-configuration

"J.D. Smith" <[email protected]>
Newsgroups gmane.emacs.bugs
Message-ID <[email protected]>
martin rudalics <[email protected]> writes:

>> In the latest v31, upon using `set-window-configuration' (e.g. via
>> `tab-bar-history-back') to change the buffer in a window, the
>> `window-buffer-change-functions' are not run.  Neither global nor
>> buffer-local values of this hook are run, in contrast to earlier
>> versions.
>>
>> I have verified that this is a recent regression caused by commit
>> d6f7b2d99bd in bug#81097.  With this commit, the hook does not run.
>> Without it, it does.
>>
>> Reproducer for the buffer-local case:
>>
>> emacs -Q
>> Eval:
>>
>>          (add-hook 'window-buffer-change-functions
>>          	  (lambda (frame)
>>          	    (walk-windows
>>          	     (lambda (win)
>>          	       (message "W=%s WOB=%s" win (window-old-buffer win)))
>>          	     nil frame)) nil t)
>>
>> M-x tab-bar-history-mode
>> C-x right  ; *Message* showing, (<win 3 on *Messages*> *scratch*)
>> M-x tab-bar-history-back ; *scratch* showing, but hook was not called
>
> I hopefully fixed that on the release branch.  Please try again.

Thanks martin, your fix in 73d959233e2 works fine here — both default
and buffer-local hook values now run correctly on
set-window-configuration.  Appreciate your quick response.

JD
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