;;; emu.el --- Emulation module for each Emacs variants
-;; Copyright (C) 1995,1996,1997 Free Software Foundation, Inc.
+;; Copyright (C) 1995,1996,1997,1998 Free Software Foundation, Inc.
;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp>
-;; Version: $Id: emu.el,v 7.44 1997/06/28 10:21:24 morioka Exp $
;; Keywords: emulation, compatibility, NEmacs, MULE, Emacs/mule, XEmacs
;; This file is part of emu.
))
)))
+(defmacro defsubst-maybe (name &rest everything-else)
+ (or (and (fboundp name)
+ (not (get name 'defsubst-maybe))
+ )
+ (` (or (fboundp (quote (, name)))
+ (progn
+ (defsubst (, name) (,@ everything-else))
+ (put (quote (, name)) 'defsubst-maybe t)
+ ))
+ )))
+
(defmacro defmacro-maybe (name &rest everything-else)
(or (and (fboundp name)
(not (get name 'defmacro-maybe))
)))
(put 'defun-maybe 'lisp-indent-function 'defun)
+(put 'defsubst-maybe 'lisp-indent-function 'defun)
(put 'defmacro-maybe 'lisp-indent-function 'defun)
+(defmacro defconst-maybe (name &rest everything-else)
+ (or (and (boundp name)
+ (not (get name 'defconst-maybe))
+ )
+ (` (or (boundp (quote (, name)))
+ (progn
+ (defconst (, name) (,@ everything-else))
+ (put (quote (, name)) 'defconst-maybe t)
+ ))
+ )))
+
-(or (boundp 'emacs-major-version)
- (defconst emacs-major-version (string-to-int emacs-version)))
-(or (boundp 'emacs-minor-version)
- (defconst emacs-minor-version
- (string-to-int
- (substring
- emacs-version
- (string-match (format "%d\\." emacs-major-version) emacs-version)
- ))))
+(defconst-maybe emacs-major-version (string-to-int emacs-version))
+(defconst-maybe emacs-minor-version
+ (string-to-int
+ (substring emacs-version
+ (string-match (format "%d\\." emacs-major-version)
+ emacs-version))))
(defvar running-emacs-18 (<= emacs-major-version 18))
(defvar running-xemacs (string-match "XEmacs" emacs-version))
(or (and running-xemacs-19 (>= emacs-minor-version 14))
running-xemacs-20-or-later))
-(cond (running-mule-merged-emacs
- ;; for mule merged EMACS
+(cond (running-xemacs
+ ;; for XEmacs
+ (require 'emu-xemacs)
+ (if (featurep 'mule)
+ ;; for XEmacs with MULE
+ (require 'emu-x20)
+ ;; for XEmacs without MULE
+ (require 'emu-latin1)
+ ))
+ (running-mule-merged-emacs
+ ;; for Emacs 20.1 and 20.2
(require 'emu-e20)
)
- (running-xemacs-with-mule
- ;; for XEmacs/mule
- (require 'emu-x20)
- )
((boundp 'MULE)
;; for MULE 1.* and 2.*
(require 'emu-mule)
(require 'emu-nemacs)
)
(t
- ;; for EMACS 19 and XEmacs 19 (without mule)
+ ;; for Emacs 19
(require 'emu-e19)
+ (require 'emu-latin1)
))
(defun charsets-to-mime-charset (charsets)
"Return MIME charset from list of charset CHARSETS.
This function refers variable `charsets-mime-charset-alist'
-and `default-mime-charset'. [emu.el]"
+and `default-mime-charset'."
(if charsets
(or (catch 'tag
(let ((rest charsets-mime-charset-alist)
- cell csl)
+ cell)
(while (setq cell (car rest))
(if (catch 'not-subset
(let ((set1 charsets)
(list 'select-window 'save-selected-window-window))))
+;;; @ Emacs 20.1 emulation
+;;;
+
+;; This macro was imported Emacs 20.2.
+(defmacro-maybe when (cond &rest body)
+ "(when COND BODY...): if COND yields non-nil, do BODY, else return nil."
+ (list 'if cond (cons 'progn body)))
+
+(defmacro-maybe save-current-buffer (&rest body)
+ "Save the current buffer; execute BODY; restore the current buffer.
+Executes BODY just like `progn'."
+ (` (let ((orig-buffer (current-buffer)))
+ (unwind-protect
+ (progn (,@ body))
+ (set-buffer orig-buffer)))))
+
+;; This macro was imported Emacs 20.2.
+(defmacro-maybe with-current-buffer (buffer &rest body)
+ "Execute the forms in BODY with BUFFER as the current buffer.
+The value returned is the value of the last form in BODY.
+See also `with-temp-buffer'."
+ (` (save-current-buffer
+ (set-buffer (, buffer))
+ (,@ body))))
+
+;; This macro was imported Emacs 20.2.
+(defmacro-maybe with-temp-buffer (&rest forms)
+ "Create a temporary buffer, and evaluate FORMS there like `progn'.
+See also `with-temp-file' and `with-output-to-string'."
+ (let ((temp-buffer (make-symbol "temp-buffer")))
+ (` (let (((, temp-buffer)
+ (get-buffer-create (generate-new-buffer-name " *temp*"))))
+ (unwind-protect
+ (with-current-buffer (, temp-buffer)
+ (,@ forms))
+ (and (buffer-name (, temp-buffer))
+ (kill-buffer (, temp-buffer))))))))
+
+;; This function was imported from XEmacs 21.
+(defun-maybe split-string (string &optional pattern)
+ "Return a list of substrings of STRING which are separated by PATTERN.
+If PATTERN is omitted, it defaults to \"[ \\f\\t\\n\\r\\v]+\"."
+ (or pattern
+ (setq pattern "[ \f\t\n\r\v]+"))
+ ;; The FSF version of this function takes care not to cons in case
+ ;; of infloop. Maybe we should synch?
+ (let (parts (start 0))
+ (while (string-match pattern string start)
+ (setq parts (cons (substring string start (match-beginning 0)) parts)
+ start (match-end 0)))
+ (nreverse (cons (substring string start) parts))))
+
+
+;;; @ Emacs 20.3 emulation
+;;;
+
+(defmacro-maybe string-as-unibyte (string)
+ "Return a unibyte string with the same individual bytes as STRING.
+If STRING is unibyte, the result is STRING itself.
+\[Emacs 20.3 emulating macro]"
+ string)
+
+(defmacro-maybe string-as-multibyte (string)
+ "Return a multibyte string with the same individual bytes as STRING.
+If STRING is multibyte, the result is STRING itself.
+\[Emacs 20.3 emulating macro]"
+ string)
+
+
;;; @ XEmacs emulation
;;;
projects / elisp / apel.git / blobdiff