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-;;; later-do.el --- execute lisp code ... later
-
-;; Copyright (C) 2004, 2005, 2006, 2007, 2008,
-;; 2009, 2018 Free Software Foundation, Inc.
-
-;; Author: Jorgen Schaefer <forcer@forcix.cx>
-
-;;; This program is free software; you can redistribute it and/or
-;;; modify it under the terms of the GNU General Public License
-;;; as published by the Free Software Foundation; either version 3
-;;; of the License, or (at your option) any later version.
-
-;;; This program is distributed in the hope that it will be useful,
-;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
-;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-;;; GNU General Public License for more details.
-
-;;; You should have received a copy of the GNU General Public License
-;;; along with this program; if not, write to the Free Software
-;;; Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
-;;; 02110-1301 USA
-
-;;; Commentary
-
-;; This file will execute lisp code ``later on''. This way it is
-;; possible to work while elisp does some longer calculations, if you
-;; can convert those calculations into a sequence of function calls.
-
-;;; Code:
-
-(defvar later-do-version "0.2emms4 (2018-04-07)"
- "Version string of later-do.")
-
-(defgroup later-do nil
- "*Running functions ... later!"
- :prefix "later-do-"
- :group 'development)
-
-(defcustom later-do-interval 0.5
- "How many seconds to wait between running events."
- :group 'later-do
- :type 'number)
-
-(defcustom later-do-batch 20
- "How many functions to process before waiting `later-do-interval'.
-The functions are processed from `later-do-list'. Must be 1 or
-greater. Too high a value might make Emacs slower while the
-list is being processed."
- :group 'later-do
- :type 'number)
-
-(defvar later-do-list nil
- "A list of functions to be called later on.")
-
-(defvar later-do-timer nil
- "The timer that later-do uses.")
-
-(defun later-do (function &rest args)
- "Apply FUNCTION to ARGS later on. This is an unspecified
-amount of time after this call, and definitely not while lisp is
-still executing. Code added using `later-do' is guaranteed to be
-executed in the sequence it was added."
- (setq later-do-list (nconc later-do-list
- (list (cons function args))))
- (unless later-do-timer
- (setq later-do-timer
- (run-with-timer later-do-interval nil 'later-do-timer))))
-
-(defun later-do-timer ()
- "Run the next element in `later-do-list', or do nothing if it's
-empty."
- (if (null later-do-list)
- (setq later-do-timer nil)
- (let (res)
- (unwind-protect
- (dotimes (b (min later-do-batch (length later-do-list)) res)
- (let ((fun (caar later-do-list))
- (args (cdar later-do-list)))
- (setq later-do-list (cdr later-do-list))
- (setq res (apply fun args)))))
- (setq later-do-timer (run-with-timer later-do-interval
- nil
- 'later-do-timer)))))
-
-(provide 'later-do)
-;;; later-do.el ends here