Re: [PATCH] Add a module function to open a file descriptor connected to a pipe.

[Eli Zaretskii <eliz@gnu.org>]

> From: Philipp Stephani <p.stephani2@gmail.com>
> Date: Thu, 26 Mar 2020 17:30:21 +0100
> Cc: Philipp Stephani <phst@google.com>
> 
> This patch implements a function that adapts an existing pipe
> process.  That way, users can use familiar tools like process filters
> or 'accept-process-output'.
> 
> * src/module-env-28.h: Add 'open_channel' module function.
> 
> * src/emacs-module.c (module_open_channel): Provide definition for
> 'open_channel'.
> (initialize_environment): Use it.
> 
> * src/process.c (open_channel_for_module): New helper function.
> (syms_of_process): Define necessary symbol.
> 
> * test/src/emacs-module-tests.el (module/async-pipe): New unit test.
> 
> * test/data/emacs-module/mod-test.c (signal_system_error): New helper
> function.
> (signal_errno): Use it.
> (write_to_pipe): New function running in the background.
> (Fmod_test_async_pipe): New test module function.
> (emacs_module_init): Export it.
> 
> * doc/lispref/internals.texi (Module Misc): Document new module
> function.
> 
> * doc/lispref/processes.texi (Asynchronous Processes): New anchor
> for pipe processes.

Thanks, but please also call out the change in NEWS.