Update copyright year to 2014 by running admin/update-copyright.

[gnu-emacs] / lisp / mh-e / mh-compat.el

diff --git a/lisp/mh-e/mh-compat.el b/lisp/mh-e/mh-compat.el
index 07c558f60cce52e5c0f878cfb05074f42d3f03a9..af9f1364970bf6ea214fa3aadca15cfb1aa797b6 100644 (file)
--- a/lisp/mh-e/mh-compat.el
+++ b/lisp/mh-e/mh-compat.el
@@ -1,6 +1,6 @@
-;;; mh-compat.el --- make MH-E compatibile with various versions of Emacs
+;;; mh-compat.el --- make MH-E compatible with various versions of Emacs
 
-;; Copyright (C) 2006-2011  Free Software Foundation, Inc.
+;; Copyright (C) 2006-2014 Free Software Foundation, Inc.
 
 ;; Author: Bill Wohler <wohler@newt.com>
 ;; Maintainer: Bill Wohler <wohler@newt.com>
@@ -75,6 +75,12 @@ introduced in Emacs 22."
       'cancel-timer
     'delete-itimer))
 
+;; Emacs 24 renamed flet to cl-flet.
+(defalias 'mh-cl-flet
+  (if (fboundp 'cl-flet)
+      'cl-flet
+    'flet))
+
 (defun mh-display-color-cells (&optional display)
   "Return the number of color cells supported by DISPLAY.
 This function is used by XEmacs to return 2 when `device-color-cells'
@@ -174,7 +180,7 @@ compatibility with versions of Emacs that lack the variable
                 dir (expand-file-name "../" dir))))
       (setq image-directory-load-path dir))
 
-    ;; If `image-directory-load-path' isn't Emacs' image directory,
+    ;; If `image-directory-load-path' isn't Emacs's image directory,
     ;; it's probably a user preference, so use it. Then use a
     ;; relative setting if possible; otherwise, use
     ;; `image-directory-load-path'.
@@ -205,7 +211,7 @@ compatibility with versions of Emacs that lack the variable
               ;; Set it to nil if image is not found.
               (cond ((file-exists-p (expand-file-name image d2ei)) d2ei)
                     ((file-exists-p (expand-file-name image d1ei)) d1ei)))))
-     ;; Use Emacs' image directory.
+     ;; Use Emacs's image directory.
      (image-directory-load-path
       (setq image-directory image-directory-load-path))
      (no-error
@@ -242,6 +248,40 @@ This function returns nil on those systems."
 This function returns nil on those systems."
   nil)
 
+(defmacro mh-define-obsolete-variable-alias
+  (obsolete-name current-name &optional when docstring)
+  "Make OBSOLETE-NAME a variable alias for CURRENT-NAME and mark it obsolete.
+See documentation for `define-obsolete-variable-alias' for a description
+of the arguments OBSOLETE-NAME, CURRENT-NAME, and perhaps WHEN
+and DOCSTRING. This macro is used by XEmacs that lacks WHEN and
+DOCSTRING arguments."
+  (if (featurep 'xemacs)
+      `(define-obsolete-variable-alias ,obsolete-name ,current-name)
+    `(define-obsolete-variable-alias ,obsolete-name ,current-name ,when ,docstring)))
+
+(defmacro mh-make-obsolete-variable (obsolete-name current-name &optional when access-type)
+  "Make the byte-compiler warn that OBSOLETE-NAME is obsolete.
+See documentation for `make-obsolete-variable' for a description
+of the arguments OBSOLETE-NAME, CURRENT-NAME, and perhaps WHEN
+and ACCESS-TYPE. This macro is used by XEmacs that lacks WHEN and
+ACCESS-TYPE arguments."
+  (if (featurep 'xemacs)
+      `(make-obsolete-variable ,obsolete-name ,current-name)
+    `(make-obsolete-variable ,obsolete-name ,current-name ,when ,access-type)))
+
+(defmacro mh-make-obsolete-variable (obsolete-name current-name &optional when access-type)
+  "Make the byte-compiler warn that OBSOLETE-NAME is obsolete.
+See documentation for `make-obsolete-variable' for a description
+of the arguments OBSOLETE-NAME, CURRENT-NAME, and perhaps WHEN
+and ACCESS-TYPE. This macro is used by XEmacs that lacks WHEN and
+ACCESS-TYPE arguments and by Emacs versions that lack ACCESS-TYPE,
+introduced in Emacs 24."
+  (if (featurep 'xemacs)
+      `(make-obsolete-variable ,obsolete-name ,current-name)
+    (if (< emacs-major-version 24)
+        `(make-obsolete-variable ,obsolete-name ,current-name ,when)
+      `(make-obsolete-variable ,obsolete-name ,current-name ,when ,access-type))))
+
 (defun-mh mh-match-string-no-properties
   match-string-no-properties (num &optional string)
   "Return string of text matched by last search, without text properties.