bug#63865: 29.0.90; call-process while owning the X selection hangs other processes

[Eli Zaretskii]

> From: Spencer Baugh <sbaugh@janestreet.com>
> Date: Fri, 02 Jun 2023 21:55:09 -0400
> 
> 
> 1. Under X11, with the GTK or Lucid toolkits:
>    emacs -Q
> 2. Become owner of the clipboard selection by killing some text; the
>    starting comments in the scratch buffer are a good candidate.
> 3. Immediately afterwards (i.e. without copy and pasting text in another
>    window), run:
>    (call-process "sleep" nil nil nil "inf")
> 4. Now other applications will hang when they attempt to paste text.
>    Google Chrome and Slack are two examples.  (GTK-based applications
>    seem to be fine.  So much for proprietary software...)

Thanks.

Does this happen also with the latest pretest, v29.0.91?