-;;; lucid.el --- Emulate some Lucid Emacs functions.
-;; Copyright (C) 1993 Free Software Foundation, Inc.
+;;; lucid.el --- emulate some Lucid Emacs functions
+
+;; Copyright (C) 1993, 1995, 2001, 2002, 2003, 2004,
+;; 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
+
+;; Maintainer: FSF
+;; Keywords: emulations
;; This file is part of GNU Emacs.
;; GNU Emacs 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)
+;; the Free Software Foundation; either version 3, or (at your option)
;; any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs; see the file COPYING. If not, write to
-;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+;; along with GNU Emacs; see the file COPYING. If not, write to the
+;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+;; Boston, MA 02110-1301, USA.
+;;; Commentary:
-(defun add-timeout (secs function object &optional resignal)
- (run-at-time secs resignal function object))
+;;; Code:
-(defun disable-timeout (timeout)
- (cancel-timer timeout))
-
-(defun copy-tree (tree)
- (if (consp tree)
- (cons (copy-tree (car tree))
- (copy-tree (cdr tree)))
- (if (vectorp tree)
- (let* ((new (copy-sequence tree))
- (i (1- (length new))))
- (while (>= i 0)
- (aset new i (copy-tree (aref new i)))
- (setq i (1- i)))
- new)
- tree)))
+;; XEmacs autoloads CL so we might as well make use of it.
+(require 'cl)
(defalias 'current-time-seconds 'current-time)
-(defun keymap-parent (keymap)
- (let ((tail (cdr keymap)))
- (while (and tail (not (eq (car tail) 'keymap)))
- (setq tail (cdr tail)))
- tail))
-
-(defun set-keymap-parent (keymap new-parent)
- (let ((tail (cdr keymap)))
- (while (and tail (cdr tail) (not (eq (car (cdr tail)) 'keymap)))
- (setq tail (cdr tail)))
- (if tail
- (setcdr tail new-parent))))
-
-(defun remove-hook (hook-var function)
- "Remove a function from a hook, if it is present.
-First argument HOOK-VAR (a symbol) is the name of a hook, second
- argument FUNCTION is the function to remove (compared with `eq')."
- (if (boundp 'hook-var)
- (let ((old (symbol-value hook-var)))
- ;; If the hook value is a single function, turn it into a list.
- (if (or (not (listp old)) (eq (car old) 'lambda))
- (set hook-var (list old)))
- ;; Now delete FUNCTION.
- (set hook-var (delq function (symbol-value hook-var))))))
-
-(defun remprop (symbol prop)
- (let ((plist (symbol-plist symbol)))
- (while (eq (car plist) prop)
- (setplist symbol (setq plist (cdr (cdr plist)))))
- (while plist
- (if (eq (nth 2 plist) prop)
- (setcdr (cdr plist) (nthcdr 4 plist)))
- (setq plist (cdr (cdr plist))))))
-
-(defun map-keymap (function keymap &optional sort-first)
- "Call FUNCTION for every binding in KEYMAP.
-This includes bindings inherited from a parent keymap.
-FUNCTION receives two arguments each time it is called:
-the character (more generally, the event type) that is bound,
-and the binding it has.
-
-Note that passing the event type directly to `define-key' does not work
-in Emacs 19. We do not emulate that particular feature of Lucid Emacs.
-If your code does that, modify it to make a vector containing the event
-type that you get. That will work in both versions of Emacs."
- (if sort-first
- (let (list)
- (map-keymap (function (lambda (a b)
- (setq list (cons (cons a b) list))))
- keymap)
- (setq list (sort list
- (function (lambda (a b)
- (setq a (car a) b (car b))
- (if (integerp a)
- (if (integerp b) (< a b)
- t)
- (if (integerp b) t
- (string< a b)))))))
- (while list
- (funcall function (car (car list)) (cdr (car list)))
- (setq list (cdr list))))
- (while (consp keymap)
- (if (consp (car keymap))
- (funcall function (car (car keymap)) (cdr (car keymap)))
- (if (vectorp (car keymap))
- (let ((i (1- (length (car keymap))))
- (vector (car keymap)))
- (while (>= i 0)
- (funcall function i (aref vector i))
- (setq i (1- i))))))
- (setq keymap (cdr keymap)))))
+(defun read-number (prompt &optional integers-only)
+ "Read a number from the minibuffer.
+Keep reentering the minibuffer until we get suitable input.
+If optional argument INTEGERS-ONLY is non-nil, insist on an integer."
+ (interactive)
+ (let (success
+ (number nil)
+ (predicate (if integers-only 'integerp 'numberp)))
+ (while (not success)
+ (let ((input-string (read-string prompt)))
+ (condition-case ()
+ (setq number (read input-string))
+ (error))
+ (if (funcall predicate number)
+ (setq success t)
+ (let ((cursor-in-echo-area t))
+ (message "Please type %s"
+ (if integers-only "an integer" "a number"))
+ (sit-for 1)))))
+ number))
(defun real-path-name (name &optional default)
(file-truename (expand-file-name name default)))
(bury-buffer (current-buffer)))
(switch-to-buffer
(if (<= arg 1) (other-buffer (current-buffer))
- (nth (1+ arg)
+ (nth arg
(apply 'nconc
(mapcar
(lambda (buf)
(list buf)))
(buffer-list)))))))
+(defun device-class (&optional device)
+ "Return the class (color behavior) of DEVICE.
+This will be one of 'color, 'grayscale, or 'mono.
+This function exists for compatibility with XEmacs."
+ (cond
+ ((display-color-p device) 'color)
+ ((display-grayscale-p device) 'grayscale)
+ (t 'mono)))
+
(defalias 'find-face 'internal-find-face)
(defalias 'get-face 'internal-get-face)
(defalias 'try-face-font 'internal-try-face-font)
+
+(defalias 'exec-to-string 'shell-command-to-string)
+\f
+
+;; Buffer context
+
+(defun buffer-syntactic-context (&optional buffer)
+ "Syntactic context at point in BUFFER.
+Either of `string', `comment' or nil.
+This is an XEmacs compatibility function."
+ (with-current-buffer (or buffer (current-buffer))
+ (let ((state (syntax-ppss (point))))
+ (cond
+ ((nth 3 state) 'string)
+ ((nth 4 state) 'comment)))))
+
+
+(defun buffer-syntactic-context-depth (&optional buffer)
+ "Syntactic parenthesis depth at point in BUFFER.
+This is an XEmacs compatibility function."
+ (with-current-buffer (or buffer (current-buffer))
+ (nth 0 (syntax-ppss (point)))))
+
+
+;; Extents
+(defun make-extent (beg end &optional buffer)
+ (make-overlay beg end buffer))
+
+(defun extent-properties (extent) (overlay-properties extent))
+(unless (fboundp 'extent-property) (defalias 'extent-property 'overlay-get))
+
+(defun extent-at (pos &optional object property before)
+ (with-current-buffer (or object (current-buffer))
+ (let ((overlays (overlays-at pos)))
+ (when property
+ (let (filtered)
+ (while overlays
+ (if (overlay-get (car overlays) property)
+ (setq filtered (cons (car overlays) filtered)))
+ (setq overlays (cdr overlays)))
+ (setq overlays filtered)))
+ (setq overlays
+ (sort overlays
+ (function (lambda (o1 o2)
+ (let ((p1 (or (overlay-get o1 'priority) 0))
+ (p2 (or (overlay-get o2 'priority) 0)))
+ (or (> p1 p2)
+ (and (= p1 p2)
+ (> (overlay-start o1) (overlay-start o2)))))))))
+ (if before
+ (nth 1 (memq before overlays))
+ (car overlays)))))
+
+(defun set-extent-property (extent prop value)
+ ;; Make sure that separate adjacent extents
+ ;; with the same mouse-face value
+ ;; do not run together as one extent.
+ (and (eq prop 'mouse-face)
+ (symbolp value)
+ (setq value (list value)))
+ (if (eq prop 'duplicable)
+ (cond ((and value (not (overlay-get extent prop)))
+ ;; If becoming duplicable, copy all overlayprops to text props.
+ (add-text-properties (overlay-start extent)
+ (overlay-end extent)
+ (overlay-properties extent)
+ (overlay-buffer extent)))
+ ;; If becoming no longer duplicable, remove these text props.
+ ((and (not value) (overlay-get extent prop))
+ (remove-text-properties (overlay-start extent)
+ (overlay-end extent)
+ (overlay-properties extent)
+ (overlay-buffer extent))))
+ ;; If extent is already duplicable, put this property
+ ;; on the text as well as on the overlay.
+ (if (overlay-get extent 'duplicable)
+ (put-text-property (overlay-start extent)
+ (overlay-end extent)
+ prop value (overlay-buffer extent))))
+ (overlay-put extent prop value))
+
+(defun set-extent-face (extent face)
+ (set-extent-property extent 'face face))
+
+(defun set-extent-end-glyph (extent glyph)
+ (set-extent-property extent 'after-string glyph))
+
+(defun delete-extent (extent)
+ (set-extent-property extent 'duplicable nil)
+ (delete-overlay extent))
\f
;; Support the Lucid names with `screen' instead of `frame'.
;; (defalias 'screen-char-width 'frame-char-width)
;; (defalias 'screen-configuration-to-register 'frame-configuration-to-register)
;; (defalias 'screen-focus 'frame-focus)
-(defalias 'screen-height 'frame-height)
(defalias 'screen-list 'frame-list)
;; (defalias 'screen-live-p 'frame-live-p)
(defalias 'screen-parameters 'frame-parameters)
(defalias 'lower-screen 'lower-frame)
(defalias 'raise-screen 'raise-frame)
(defalias 'screen-visible-p 'frame-visible-p)
-(defalias 'screen-width 'frame-width)
(defalias 'screenp 'framep)
(defalias 'select-screen 'select-frame)
(defalias 'selected-screen 'selected-frame)
(defalias 'visible-screen-list 'visible-frame-list)
(defalias 'window-screen 'window-frame)
(defalias 'x-create-screen 'x-create-frame)
-(defalias 'x-new-screen 'new-frame)
+(defalias 'x-new-screen 'make-frame)
(provide 'lucid)
-;;; end of lucid.el
+;; arch-tag: 80f9ab46-0b36-4151-86ed-3edb6d449c9e
+;;; lucid.el ends here
HCoop / bpt / emacs.git / blobdiff