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compatibility with emacs22

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Emacs22 lacks apply-partially and mouse-event-p, so define them if emacs
version is less than 23.  With this change, I was able to begin using
notmuch in emacs22.

The definitions of apply-partially and mouse-event-p are copied from
the emacs 23 distribution, (which is distributed under the GPLv3+ just
as notmuch).
This commit is contained in:
James Vasile 2010-02-27 20:34:45 -05:00 committed by Carl Worth
parent c4bbbb73f8
commit 7ae149445a
1 changed files with 24 additions and 0 deletions
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24
emacs/notmuch-lib.el
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@ -116,5 +116,29 @@ within the current window."
(or (memq prop buffer-invisibility-spec)
(assq prop buffer-invisibility-spec)))))
;; Compatibility functions for versions of emacs before emacs 23.
;;
;; Both functions here were copied from emacs 23 with the following copyright:
;;
;; Copyright (C) 1985, 1986, 1992, 1994, 1995, 1999, 2000, 2001, 2002, 2003,
;; 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
;;
;; and under the GPL version 3 (or later) exactly as notmuch itself.
(when (< emacs-major-version 23)
(defun apply-partially (fun &rest args)
"Return a function that is a partial application of FUN to ARGS.
ARGS is a list of the first N arguments to pass to FUN.
The result is a new function which does the same as FUN, except that
the first N arguments are fixed at the values with which this function
was called."
(lexical-let ((fun fun) (args1 args))
(lambda (&rest args2) (apply fun (append args1 args2)))))
(defun mouse-event-p (object)
"Return non-nil if OBJECT is a mouse click event."
(memq (event-basic-type object) '(mouse-1 mouse-2 mouse-3 mouse-movement))))
(provide 'notmuch-lib)