bug#75056: 31.0.50; tty-child-frames with server / multiple clients possible hangs

[Len Trigg <lenbok@gmail.com>]

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On Sat, 28 Dec 2024 at 07:13, Len Trigg <lenbok@gmail.com> wrote:

> Hmmm, the repro scenario I gave doesn't involve either emacs client being
> still in the minibuffer AFAIK - the "working" client is just in a regular
> buffer (e.g. having been chosen via C-x b and selected), and the "hung"
> client is, well, hung.
>

To elaborate my steps:
emacs -nw --init-directory=~/emacs-test  (the first time will result in
packages being installed by elpaca)
(in another terminal) emacsclient -nw
Then invoke the child frame pop up: (e.g. C-x b and C-n to select
*Messages* and RET). Now we're no longer in a minibuffer.
Switch back to the original emacs
Invoke the child frame pop up (e.g. C-x b and C-n to select *Messages* and
RET). Now we're no longer in a minibuffer.
Swap to the other terminal, and note that the client is "hung".

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