Philipp Stephani d28b004768 Add a module function to open a file descriptor connected to a pipe. ... A common complaint about the module API is that modules can't communicate asynchronously with Emacs. While it isn't possible to call arbitrary Emacs functions asynchronously, writing to a pipe should always be fine and is a pretty low-hanging fruit. 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. * etc/NEWS: Document 'open_channel' function.		2020-03-26 21:47:25 +01:00
..
emacs	Merge from origin/emacs-27	2020-03-23 09:48:15 -07:00
lispintro	Merge from origin/emacs-27	2020-02-13 07:50:24 -08:00
lispref	Add a module function to open a file descriptor connected to a pipe.	2020-03-26 21:47:25 +01:00
man	Update copyright year to 2020	2020-01-01 00:59:52 +00:00
misc	CC Mode: allow specified directives (e.g. pragma) to be indented as statements	2020-03-08 16:21:15 +00:00