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[chise/xemacs-chise.git-] / lisp / cus-load.el

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+;;; cus-load.el --- Batch load all available cus-load files
+
+;; Copyright (C) 1997 by Free Software Foundation, Inc.
+
+;; Author: Steven L Baur <steve@xemacs.org>
+;; Keywords: internal, help, faces
+
+;; This file is part of XEmacs.
+
+;; XEmacs 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 2, or (at your option)
+;; any later version.
+
+;; XEmacs 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 XEmacs; see the file COPYING.  If not, write to the Free
+;; Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+;; 02111-1307, USA.
+
+;;; Synched up with: Not in FSF
+
+;;; Commentary:
+
+;; In FSF all of the custom loads are in a single `cus-load' file.
+;; However, we have them distributed across directories, with optional
+;; incremental loading.  Here we simply collect the whole set.
+
+\f
+;;; Code:
+
+(require 'custom)
+
+(defun custom-add-loads (symbol list)
+  "Update the custom-loads list of a symbol.
+This works by adding the elements from LIST to the SYMBOL's
+`custom-loads' property, avoiding duplicates.  Also, SYMBOL is
+added to `custom-group-hash-table'."
+  (let ((loads (get symbol 'custom-loads)))
+    (dolist (el list)
+      (unless (member el loads)
+       (setq loads (nconc loads (list el)))))
+    (put symbol 'custom-loads loads)
+    (puthash symbol t custom-group-hash-table)))
+
+(message "Loading customization dependencies...")
+
+;; Garbage-collection seems to be very intensive here, and it slows
+;; things down.  Nuke it.
+(let ((gc-cons-threshold most-positive-fixnum))
+  (mapc (lambda (dir)
+         (load (expand-file-name "custom-load" dir) t t))
+       load-path))
+
+(message "Loading customization dependencies...done")
+
+(provide 'cus-load)
+
+;;; cus-load.el ends here