bug#45518: Ctrl-G Fails to Interrupt Hung Tramp Remote-Compile in Emacs 27.1

[Michael Albinus]

Michael Albinus <michael.albinus@gmx.de> writes:

Hi Duncan,

>> There is still one tramp hanging issue I saw in my testing. This is a
>> much less serious issue (pressing ctrl-G once "unhangs"), but thought
>> I'd mention it here. LMK if you'd prefer a separate bug report and
>> I'll create one.
>
> Just an update. I've played with this for a while. I could reproduce,
> and I also know where it hangs. It is accept-process-output of the Tramp
> process which tries to view the file you have clicked on, vs
> accept-process-output of the compile process. Both don't cooperate
> sufficiently, and both hang.
>
> I have no idea (yet) how to solve. One idea would be to start the
> compilation process in another thread, but this will raise other
> problems. There is some WIP to make Tramp thread-safe, but this is
> stalled ATM.

Since I don't know a general solution yet, I have prepared a small
patch, which suppresses visting remote files as result of a
compilation. Silently. When compilation has finished, everything is back
to normal.

See the appended patch, whether it makes the situation better for you.

>> Thanks again for fixing the main hanging issue!
>> Duncan.

Best regards, Michael.

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