Re: wait_reading_process_ouput hangs in certain cases (w/ patches)

[Eli Zaretskii]

> Cc: address@hidden
> From: Matthias Dahl <address@hidden>
> Date: Wed, 15 Nov 2017 15:03:27 +0100
> 
> The crucial part is: ALL data has been read from our wait_proc while we
> were running timers or filters -- and no further data will become
> available until there is some interaction again with the process. That
> is the case with the ispell process.
> 
> wait_reading_... currently has no chance/code to detect such an event
> since it solely relies on pselect calls and such -- which will come up
> empty handed if no further data is available, and there is nothing to
> change that.

Indeed, that was also my conclusion.  Paul, if you are saying that
there is some machinery in wait_reading_process_output to handle such
situations, and it just doesn't DTRT in this case for some reason,
then please point out where that code lives.

Thanks.