-;;; 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 Free Software Foundation, Inc.
+
+;; Maintainer: FSF
+;; Keywords: emulations
;; This file is part of GNU Emacs.
;; 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 keymap))
- (while (and tail (cdr tail) (not (eq (car (cdr tail)) 'keymap)))
- (setq tail (cdr tail)))
- (if tail
- (setcdr tail new-parent))))
-
-(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.
(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.
(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))
;; (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)
(provide 'lucid)
-;;; end of lucid.el
+;;; arch-tag: 80f9ab46-0b36-4151-86ed-3edb6d449c9e
+;;; lucid.el ends here