Re: Too fine design granularity leads to numerous macro/function/command existed in Emacs.

[Emanuel Berg via Users list for the GNU Emacs text editor <help-gnu-emacs@gnu.org>]

> You can do IPC with Emacs, see/try for example [...]

I modernized that just a little bit... a little bit more!
<https://www.youtube.com/watch?v=PnPUKm9ExHo>

;;; -*- lexical-binding: t -*-
;;;
;;; this file:
;;;   http://user.it.uu.se/~embe8573/emacs-init/signal.el
;;;   https://dataswamp.org/~incal/emacs-init/signal.el
;;;
;;; test from Emacs:
;;;   (signal-process (emacs-pid) 'sigusr1)
;;;
;;; test from zsh:
;;;   $ kill -s usr1 $(pidof emacs)

(defun signal-usr1-f ()
  (interactive)
  (message "USR1 signal") )

(define-key special-event-map [sigusr1] #'signal-usr1-f)

-- 
underground experts united
https://dataswamp.org/~incal