bug#63629: Fwd: bug#63629: 28.3; Emacsclient exits with no error message and breaks terminal when opening a file without permissions

[Adam Ibrahim <ibrahimadam193@gmail.com>]

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Makes sense. Thanks.

On Wed, May 24, 2023, 06:52 Eli Zaretskii <eliz@gnu.org> wrote:

> > From: Adam Ibrahim <ibrahimadam193@gmail.com>
> > Date: Tue, 23 May 2023 16:30:14 -0400
> > Cc: 63629@debbugs.gnu.org
> >
> > I ran the following commands on my phone in termux and in Kitty on my PC
> 10 times each and record
> > the results. I did it multiple times because the results seem random.
> >
> >  ./src/emacs --fg-daemon -Q
> >  ./lib-src/emacsclient path/to/no-perms # in a separate terminal, 10
> times
> >
> > Phone + Termux: 9 out of 10 times, I got the expected results where the
> terminal was not broken and I
> > saw an error message. on the 10th time there was some weird behavior,
> but I haven't been able to
> > reproduce it and I don't remember what happened.
> >
> > PC + Kitty: there were no crashes meaning the terminal wasn't broken
> anymore. but 6 out of 10 times
> > the error message didn't print. sometimes all I saw was "waiting for
> emacs..." and some other times
> > all I saw was "...". the other four times was expected behavior colon
> the error message printed and the
> > terminal wasn't broken.
> >
> > Note: I have a slightly different environment on my phone compared to
> the first time. when I first
> > reported the bug I was using the emacs and emacsclient programs located
> on my phone. this time I
> > used the modified emacs and emacsclient from my desktop over SSH. I
> don't know if that changed the
> > results. But the bug with unmodified emacs happens just the same over
> SSH as with emacs on my
> > phone.
>
> If the only problem you see after the change is that you don't always
> see the error message, then it's expected.  emacsclient outputs the
> error message to stderr, and when there's a client frame on that
> display, it is impossible to make sure the error message will always
> be shown, before it is erased when the terminal is closed by the
> server Emacs process.  So the only thing the fix tries to guarantee is
> that you will be able to use the terminal after emacsclient exits.  If
> this happens in all the configurations you tried, then the goal of the
> change is achieved, and I don't think we can do much more.
>

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