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Re: long-standing GTK bug

From: Stefan Monnier
Subject: Re: long-standing GTK bug
Date: Mon, 10 May 2021 11:00:08 -0400
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux)

Robert Pluim [2021-05-10 16:45:05] wrote:
>>>>>> On Mon, 10 May 2021 10:40:20 -0400, Stefan Monnier 
>>>>>> <monnier@iro.umontreal.ca> said:
>     Stefan> IIUC the difference (with the patch) is between stopping ssh via 
> `C-c` or
>     Stefan> via `kill`.  I wonder why this matters, and I think it's not at 
> all
>     Stefan> obvious if an "abrupt" network disconnection would be more like 
> `C-c` or
>     Stefan> more like `kill`.
> In the 'C-c' case Emacs has had a chance to clean up its internal
> state (with the patch applied).

Why?  What does ssh do that is gentler?

> With 'kill' weʼre pulling the rug out from under GTK (see the
> backtrace several messages up-thread).

I suspect it then also depends on the `kill` signal.

In my WM (ctwm), I can also distinguish between `f.delete` and
`f.destroy` where the first sends something like a WM_DELETE request to
the application (which Emacs treats via `handle-delete-frame`, IIRC)
whereas `f.destroy` asks the X server to cut the connection AFAIK.

Would `f.destroy` be more like the `C-c` or the `kill` case of ssh?


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