-;;; 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, 2007, 2008, 2009, 2010, 2011, 2012
-;; Free Software Foundation, Inc.
+;; Copyright (C) 2006-2016 Free Software Foundation, Inc.
;; Author: Bill Wohler <wohler@newt.com>
;; Maintainer: Bill Wohler <wohler@newt.com>
'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'
(defmacro mh-display-completion-list (completions &optional common-substring)
"Display the list of COMPLETIONS.
See documentation for `display-completion-list' for a description of the
-arguments COMPLETIONS and perhaps COMMON-SUBSTRING.
-This macro is used by Emacs versions that lack a COMMON-SUBSTRING
-argument, introduced in Emacs 22."
- (if (< emacs-major-version 22)
- `(display-completion-list ,completions)
- `(display-completion-list ,completions ,common-substring)))
+arguments COMPLETIONS.
+The optional argument COMMON-SUBSTRING, if non-nil, should be a string
+specifying a common substring for adding the faces
+`completions-first-difference' and `completions-common-part' to
+the completions."
+ (cond ((< emacs-major-version 22) `(display-completion-list ,completions))
+ ((fboundp 'completion-hilit-commonality) ; Emacs 23.1 and later
+ `(display-completion-list
+ (completion-hilit-commonality ,completions
+ ,(length common-substring) nil)))
+ (t ; Emacs 22
+ `(display-completion-list ,completions ,common-substring))))
(defmacro mh-face-foreground (face &optional frame inherit)
"Return the foreground color name of FACE, or nil if unspecified.
(let* ((load-path (image-load-path-for-library \"mh-e\" \"mh-logo.xpm\"))
(image-load-path (cons (car load-path)
- (when (boundp 'image-load-path)
+ (when (boundp \\='image-load-path)
image-load-path))))
(mh-tool-bar-folder-buttons-init))"
(unless library (error "No library specified"))
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'.
;; 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
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.
`replace-in-string' are ignored."
(replace-in-string string regexp rep literal))
+(defun-mh mh-test-completion
+ test-completion (string collection &optional predicate)
+ "Return non-nil if STRING is a valid completion.
+XEmacs does not have `test-completion'. This function returns nil
+on that system." nil)
+
;; Copy of constant from url-util.el in Emacs 22; needed by Emacs 21.
(if (not (boundp 'url-unreserved-chars))
(defconst mh-url-unreserved-chars
(if exit-action nil)
(view-mode 1))
+(defun-mh mh-window-full-height-p
+ window-full-height-p (&optional WINDOW)
+ "Return non-nil if WINDOW is not the result of a vertical split.
+This function is defined in XEmacs as it lacks
+`window-full-height-p'. The values of the functions
+`window-height' and `frame-height' are compared instead. The
+argument WINDOW is ignored."
+ (= (1+ (window-height))
+ (frame-height)))
+
(defmacro mh-write-file-functions ()
"Return `write-file-functions' if it exists.
Otherwise return `local-write-file-hooks'.
;; sentence-end-double-space: nil
;; End:
-;; arch-tag: 577b0eab-a5cd-45e1-8d9f-c1a426f4d73c
;;; mh-compat.el ends here