*** empty log message ***

3 files changed, 108 insertions, 24 deletions

diff --git a/lisp/cus-dep.el b/lisp/cus-dep.el
index 006197aa3ab..7674599b705 100644
--- a/lisp/cus-dep.el
+++ b/lisp/cus-dep.el
@@ -27,6 +27,7 @@
 (require 'cl)
 (require 'widget)
 (require 'cus-face)
+(require 'autoload)
 
 (defun custom-make-dependencies ()
   "Batch function to extract custom dependencies from .el files.
@@ -40,7 +41,8 @@ Usage: emacs -batch -l ./cus-dep.el -f custom-make-dependencies DIRS"
       (message "Directory %s" (car all-subdirs))
       (let ((files (directory-files (car all-subdirs) nil "\\`[^=].*\\.el\\'"))
             (default-directory default-directory)
-            file)
+            file
+            is-autoloaded)
         (cd (car all-subdirs))
         (while files
           (setq file (car files)
@@ -54,11 +56,17 @@ Usage: emacs -batch -l ./cus-dep.el -f custom-make-dependencies DIRS"
               (condition-case nil
                   (while (re-search-forward "^(defcustom\\|^(defface\\|^(defgroup"
                                             nil t)
+                    (setq is-autoloaded nil)
                     (beginning-of-line)
+                    (save-excursion
+                      (forward-line -1)
+                      (if (looking-at generate-autoload-cookie)
+                          (setq is-autoloaded t)))
                     (let ((expr (read (current-buffer))))
                       (condition-case nil
                           (progn
                             (eval expr)
+                            (put (nth 1 expr) 'custom-autoloaded is-autoloaded)
                             (put (nth 1 expr) 'custom-where name))
                         (error nil))))
                 (error nil)))))
@@ -91,6 +99,66 @@ Usage: emacs -batch -l ./cus-dep.el -f custom-make-dependencies DIRS"
                   (when found
                     (insert "))\n"))))))
   (insert "\
+;;; These are for handling :version.  We need to have a minimum of
+;;; information so `custom-changed-variables' could do its job.  
+;;; For both groups and variables we have to set `custom-version'.
+;;; For variables we also set the `standard-value' and for groups
+;;; `group-documentation' (which is shown in the customize buffer, so
+;;; we don't have to load the file containing the group.
+
+;;; `custom-versions-load-alist' is an alist that has as car a version
+;;; number and as elts the files that have variables that contain that
+;;; version. These files should be loaded before showing the
+;;; customization buffer that `customize-changed-options' generates.
+
+
+;;; This macro is used so we don't modify the information about
+;;; variables and groups if it's already set. (We don't know when
+;;; cus-load.el is going to be loaded and at that time some of the
+;;; files might be loaded and some others might not).
+(defmacro custom-put-if-not (symbol propname value)
+  `(unless (get ,symbol ,propname)
+     (put ,symbol ,propname ,value)))
+
+")
+  (let ((version-alist nil))
+    (mapatoms (lambda (symbol)
+                (let ((version (get symbol 'custom-version))
+                      where)
+                  (when version 
+                    (setq where (get symbol 'custom-where))
+                    (when (and where 
+                               ;; Don't bother to do anything if it's
+                               ;; autoloaded because we will have all
+                               ;; this info when emacs is running
+                               ;; anyway.
+                               (not (get symbol 'custom-autoloaded)))
+                      (insert "(custom-put-if-not '" (symbol-name symbol) 
+                              " 'custom-version ")
+                      (prin1 version (current-buffer))
+                      (insert ")\n")
+                      (insert "(put '" (symbol-name symbol))
+                      (if (get symbol 'standard-value)
+                          ;; This means it's a variable
+                          (progn
+                            (insert " 'standard-value t)\n")
+                            (if (assoc version version-alist)
+                                (unless 
+                                    (member where 
+                                            (cdr (assoc version version-alist)))
+                                  (push where (cdr (assoc version version-alist))))
+                              (push (cons version (list where)) version-alist)))
+                        ;; This is a group
+                        (insert " 'group-documentation ")
+                        (prin1 (get symbol 'group-documentation) (current-buffer))
+                        (insert ")\n")))))))
+
+    (insert "\n(defvar custom-versions-load-alist "
+            (if version-alist "'" ""))
+    (prin1 version-alist (current-buffer))
+    (insert "\n \"For internal use by custom.\")\n"))
+    
+  (insert "\
 
 \(provide 'cus-load)
 
diff --git a/lisp/cus-edit.el b/lisp/cus-edit.el
index 20ce781158c..0007ecefbd7 100644
--- a/lisp/cus-edit.el
+++ b/lisp/cus-edit.el
@@ -880,9 +880,12 @@ option."
   (interactive "sCustomize options changed, since version (default all versions): ")
   (if (equal since-version "")
       (setq since-version nil))
-  (let ((found nil))
+  (let ((found nil)
+        (versions nil))
     (mapatoms (lambda (symbol)
                 (and (or (boundp symbol)
+                         ;; For variables not yet loaded.
+                         (get symbol 'standard-value)
                          ;; For groups the previous test fails, this one
                          ;; could be used to determine if symbol is a
                          ;; group. Is there a better way for this?
@@ -890,7 +893,11 @@ option."
                      (let ((version (get symbol 'custom-version)))
                        (and version
                             (or (null since-version)
-                                (customize-version-lessp since-version version))))
+                                (customize-version-lessp since-version version))
+                            (if (member version versions) 
+                                t
+                              ;;; Collect all versions that we use.
+                              (push version versions))))
                      (setq found
                            ;; We have to set the right thing here,
                            ;; depending if we have a group or a
@@ -900,7 +907,23 @@ option."
                              (cons (list symbol 'custom-variable) found))))))
     (if (not found)
         (error "No user options have changed defaults in recent Emacs versions")
-      (custom-buffer-create (custom-sort-items found t nil)
+      (put 'custom-versions-load-alist 'custom-loads 
+           ;; Get all the files that correspond to element from the
+           ;; VERSIONS list. This could use some simplification.
+           (let ((flist nil))
+             (while versions
+               (push (copy-sequence 
+                      (cdr (assoc (car versions)  custom-versions-load-alist)))
+                     flist)
+               (setq versions (cdr versions)))
+             (apply 'nconc flist)))
+      ;; Because we set all the files needed to be loaded as a
+      ;; `custom-loads' property to `custom-versions-load-alist' this
+      ;; call will actually load them.
+      (custom-load-symbol 'custom-versions-load-alist)
+      ;; Clean up
+      (put 'custom-versions-load-alist 'custom-loads nil)
+      (custom-buffer-create (custom-sort-items found t 'first)
                             "*Customize Changed Options*"))))
 
 (defun customize-version-lessp (version1 version2)
@@ -1183,7 +1206,7 @@ Reset all values in this buffer to their standard settings."
                 (length (length options)))
             (mapcar (lambda (entry)
                         (prog2
-                            (message "Creating customization items %2d%%..."
+                            (message "Creating customization items ...%2d%%"
                                      (/ (* 100.0 count) length))
                             (widget-create (nth 1 entry)
                                          :tag (custom-unlispify-tag-name
@@ -1196,7 +1219,7 @@ Reset all values in this buffer to their standard settings."
                       options))))
   (unless (eq (preceding-char) ?\n)
     (widget-insert "\n"))
-  (message "Creating customization items %2d%%...done" 100)
+  (message "Creating customization items ...%2d%%done" 100)
   (unless (eq custom-buffer-style 'tree)
     (mapcar 'custom-magic-reset custom-options))
   (message "Creating customization setup...")
diff --git a/lisp/midnight.el b/lisp/midnight.el
index ec5db1fd0d9..01b987320d9 100644
--- a/lisp/midnight.el
+++ b/lisp/midnight.el
@@ -40,7 +40,8 @@
 
 (defgroup midnight nil
   "Run something every day at midnight."
-  :group 'calendar)
+  :group 'calendar
+  :version "20.3")
 
 (defcustom midnight-mode t
   "*Non-nil means run `midnight-hook' at midnight.
@@ -49,7 +50,6 @@ call `cancel-timer' or `timer-activate' on `midnight-timer' instead."
   :type 'boolean
   :group 'midnight
   :require 'midnight
-  :version "20.3"
   :set (lambda (symb val)
          (set symb val) (require 'midnight)
          (if val (timer-activate midnight-timer)
@@ -83,8 +83,7 @@ Currently displayed and/or modified (unsaved) buffers, as well as buffers
 matching `clean-buffer-list-kill-never-buffer-names' and
 `clean-buffer-list-kill-never-regexps' are excluded."
   :type 'integer
-  :group 'midnight
-  :version "20.3")
+  :group 'midnight)
 
 (defcustom clean-buffer-list-delay-special 3600
   "*The number of seconds before some buffers become eligible for autokilling.
@@ -92,8 +91,7 @@ Buffers matched by `clean-buffer-list-kill-regexps' and
 `clean-buffer-list-kill-buffer-names' are killed if they were last
 displayed more than this many seconds ago."
   :type 'integer
-  :group 'midnight
-  :version "20.3")
+  :group 'midnight)
 
 (defcustom clean-buffer-list-kill-regexps nil
   "*List of regexps saying which buffers will be killed at midnight.
@@ -106,8 +104,7 @@ See also `clean-buffer-list-kill-buffer-names',
 `clean-buffer-list-kill-never-regexps' and
 `clean-buffer-list-kill-never-buffer-names'."
   :type 'list
-  :group 'midnight
-  :version "20.3")
+  :group 'midnight)
 
 (defcustom clean-buffer-list-kill-buffer-names
     '("*Help*" "*Apropos*" "*Man " "*Buffer List*" "*Compile-Log*" "*info*")
@@ -121,8 +118,7 @@ See also `clean-buffer-list-kill-regexps',
 `clean-buffer-list-kill-never-regexps' and
 `clean-buffer-list-kill-never-buffer-names'."
   :type 'list
-  :group 'midnight
-  :version "20.3")
+  :group 'midnight)
 
 (defcustom clean-buffer-list-kill-never-buffer-names
     '("*scratch*" "*Messages*")
@@ -132,8 +128,8 @@ Note that this does override `clean-buffer-list-kill-regexps' and
 `clean-buffer-list-kill-buffer-names' so a buffer matching any of these
 two lists will NOT be killed if it is also present in this list."
   :type 'list
-  :group 'midnight
-  :version "20.3")
+  :group 'midnight)
+
 
 (defcustom clean-buffer-list-kill-never-regexps '("^ \*Minibuf-.*\*$")
   "*List of regexp saying which buffers will never be killed at midnight.
@@ -143,8 +139,7 @@ Note that this does override `clean-buffer-list-kill-regexps' and
 `clean-buffer-list-kill-buffer-names' so a buffer matching any of these
 two lists will NOT be killed if it also matches anything in this list."
   :type 'list
-  :group 'midnight
-  :version "20.3")
+  :group 'midnight)
 
 (defun midnight-find (el ls test &optional key)
   "A stopgap solution to the absence of `find' in ELisp."
@@ -198,8 +193,7 @@ The relevant vartiables are `clean-buffer-list-delay-general',
   "The hook run `midnight-delay' seconds after midnight every day.
 The default value is `clean-buffer-list'."
   :type 'hook
-  :group 'midnight
-  :version "20.3")
+  :group 'midnight)
 
 (defun midnight-next ()
   "Return the number of seconds till the next midnight."
@@ -237,8 +231,7 @@ If you wish, you can use a string instead, it will be passed as the
 first argument to `run-at-time'."
   :type 'sexp
   :set 'midnight-delay-set
-  :group 'midnight
-  :version "20.3")
+  :group 'midnight)
 
 (provide 'midnight)