GNU bug report logs - #41338
Toolbar-bug in Emacs 27.0.91/Pretest

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Message #71 received at 41338 <at> debbugs.gnu.org (full text, mbox):

From: Juri Linkov <juri <at> linkov.net>
To: Drew Adams <drew.adams <at> oracle.com>
Cc: martin rudalics <rudalics <at> gmx.at>, 41338 <at> debbugs.gnu.org,
 Stephen Berman <stephen.berman <at> gmx.net>,
 Konrad Podczeck <konrad.podczeck <at> univie.ac.at>
Subject: Re: bug#41338: Toolbar-bug in Emacs 27.0.91/Pretest
Date: Wed, 20 May 2020 01:01:53 +0300

> If I use `emacs -Q', in the Emacs 27 pretest
> or in Emacs 26.3 or earlier, and if I do this
> and then click the `X' icon:
>
> (define-key special-event-map [delete-frame]
>   (lambda (&rest ignore)
>     (interactive)
>     (message "HHHHHHHHHHHHHH")))
>
> I just get the message, as expected.
>
> (Sorry, haven't been following this thread.)

Indeed, clicking the `X' emits the `delete-frame' event.

The problem is that no one understand this comment in isearch.el:

    ;; Pass frame events transparently so they won't exit the search.
    ;; In particular, if we have more than one display open, then a
    ;; switch-frame might be generated by someone typing at another keyboard.
    (define-key map [switch-frame] nil)
    (define-key map [delete-frame] nil)

added in 1995 by 5f48fc17d16.

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