Re: Tree-sitter introduction documentation

[Eli Zaretskii]

> From: Yuan Fu <casouri@gmail.com>
> Date: Sun, 1 Jan 2023 16:31:30 -0800
> Cc: Stefan Monnier <monnier@iro.umontreal.ca>,
>  Philip Kaludercic <philipk@posteo.net>,
>  Dmitry Gutov <dgutov@yandex.ru>,
>  theophilusx@gmail.com,
>  emacs-devel@gnu.org
> 
> 
> 
> > On Dec 31, 2022, at 10:39 PM, Eli Zaretskii <eliz@gnu.org> wrote:
> > 
> >> From: Yuan Fu <casouri@gmail.com>
> >> Date: Sat, 31 Dec 2022 17:16:11 -0800
> >> Cc: Eli Zaretskii <eliz@gnu.org>,
> >> Philip Kaludercic <philipk@posteo.net>,
> >> dgutov@yandex.ru,
> >> theophilusx@gmail.com,
> >> emacs-devel@gnu.org
> >> 
> >>> 
> >>>> I wanted to keep it simple, synchronous, and quiet, and didn’t thought
> >>>> much about it.
> >>> 
> >>> I think we should default to asynchonous operations as much as possible.
> >> 
> >> If you are talking about the whole command, maybe. Does call-process 
> >> automatically yield when ran in a make-thread?
> > 
> > No, it doesn't.  And it's threads that yield, not Emacs primitives.  A
> > thread will yield when it calls some API that invokes pselect.
> 
> Thanks. I guess what I’m asking is that if I run the command in make-thread, 
> will the thread yield when it’s waiting for the subprocess? I tried it and it 
> still blocks Emacs so I guess the answer is no. But maybe I’m doing it wrong.

No, it isn't supposed to yield, because waiting for the process in
this case is done by calling a C library function, not via the Emacs
waiting loop.