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Re: Query about Emacs Process API | Asynchronous processes
From: |
Narendra Joshi |
Subject: |
Re: Query about Emacs Process API | Asynchronous processes |
Date: |
Sun, 05 Jul 2020 21:13:11 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) |
Stefan Monnier <monnier@iro.umontreal.ca> writes:
>> I read that section of the manual. I am still not sure what will be the
>> use cases for this. Where in Emacs (or the package ecosystem) is this
>> feature being used currently?
>
> I think it's used for `ielm`.
>
> Stefan
>
`ielm` seems to be adding a dummy process to its buffer using either
`cat` or `hexl` binary.
--8<---------------cut here---------------start------------->8---
;; A dummy process to keep comint happy. It will never get any input
(unless (comint-check-proc (current-buffer))
;; Was cat, but on non-Unix platforms that might not exist, so
;; use hexl instead, which is part of the Emacs distribution.
(condition-case nil
(start-process "ielm" (current-buffer) "hexl")
(file-error (start-process "ielm" (current-buffer) "cat")))
(set-process-query-on-exit-flag (ielm-process) nil)
(goto-char (point-max))
--8<---------------cut here---------------end--------------->8---
--
Narendra Joshi