X-Git-Url: http://git.chise.org/gitweb/?p=elisp%2Fapel.git;a=blobdiff_plain;f=poe-xemacs.el;h=5ebf94fc18f7ac03753e4f3751b89e2581f95ced;hp=0ab712806b8aac81ba51d679b3cde8528e6296c0;hb=8fea4843a926e356bb5e6fb7850d1a05bde1f0ca;hpb=ad3ba73586a7e06f1311726585c1e2c86995bda2

diff --git a/poe-xemacs.el b/poe-xemacs.el
index 0ab7128..5ebf94f 100644
--- a/poe-xemacs.el
+++ b/poe-xemacs.el
@@ -20,8 +20,8 @@
 
 ;; You should have received a copy of the GNU General Public License
 ;; along with XEmacs; see the file COPYING.  If not, write to the Free
-;; Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
-;; 02111-1307, USA.
+;; Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+;; MA 02110-1301, USA.
 
 ;;; Code:
 
@@ -78,6 +78,119 @@ When called interactively, prompt for the name of the color to use."
   (switch-to-buffer-other-frame (dired-noselect dirname switches)))
 
 
+;;; @ timer
+;;;
+
+(condition-case nil
+    (require 'timer-funcs)
+  (error nil))
+(condition-case nil
+    (require 'timer)
+  (error nil))
+(or
+ (or (featurep 'timer-funcs) (featurep 'timer))
+ (progn
+   (require 'itimer)
+   (if (and (= emacs-major-version 19) (<= emacs-minor-version 14))
+       (defun-maybe run-at-time (time repeat function &rest args)
+	 (start-itimer (make-temp-name "rat")
+		       `(lambda ()
+			  (,function ,@args))
+		       time repeat))
+     (defun-maybe run-at-time (time repeat function &rest args)
+       "Function emulating the function of the same name of Emacs.
+TIME should be nil meaning now, or a number of seconds from now.
+Return an itimer object which can be used in either `delete-itimer'
+or `cancel-timer'."
+       (apply #'start-itimer "run-at-time"
+	      function (if time (max time 1e-9) 1e-9)
+	      repeat nil t args)))
+   (defalias 'cancel-timer 'delete-itimer)
+   (defun with-timeout-handler (tag)
+     (throw tag 'timeout))
+   (defmacro-maybe with-timeout (list &rest body)
+     (let ((seconds (car list))
+	   (timeout-forms (cdr list)))
+       `(let ((with-timeout-tag (cons nil nil))
+	      with-timeout-value with-timeout-timer)
+	  (if (catch with-timeout-tag
+		(progn
+		  (setq with-timeout-timer
+			(run-at-time ,seconds nil
+				     'with-timeout-handler
+				     with-timeout-tag))
+		  (setq with-timeout-value (progn . ,body))
+		  nil))
+	      (progn . ,timeout-forms)
+	    (cancel-timer with-timeout-timer)
+	    with-timeout-value))))))
+
+(require 'broken)
+
+(broken-facility run-at-time-tick-tock
+  "`run-at-time' is not punctual."
+  ;; Note that it doesn't support XEmacsen prior to the version 19.15
+  ;; since `start-itimer' doesn't pass arguments to a timer function.
+  (or (and (= emacs-major-version 19) (<= emacs-minor-version 14))
+      (condition-case nil
+	  (progn
+	    (unless (or itimer-process itimer-timer)
+	      (itimer-driver-start))
+	    ;; Check whether there is a bug to which the difference of
+	    ;; the present time and the time when the itimer driver was
+	    ;; woken up is subtracted from the initial itimer value.
+	    (let* ((inhibit-quit t)
+		   (ctime (current-time))
+		   (itimer-timer-last-wakeup
+		    (prog1
+			ctime
+		      (setcar ctime (1- (car ctime)))))
+		   (itimer-list nil)
+		   (itimer (start-itimer "run-at-time" 'ignore 5)))
+	      (sleep-for 0.1) ;; Accept the timeout interrupt.
+	      (prog1
+		  (> (itimer-value itimer) 0)
+		(delete-itimer itimer))))
+	(error nil))))
+
+(when-broken run-at-time-tick-tock
+  (defalias 'run-at-time
+    (lambda (time repeat function &rest args)
+      "Function emulating the function of the same name of Emacs.
+It works correctly for TIME even if there is a bug in the XEmacs core.
+TIME should be nil meaning now, or a number of seconds from now.
+Return an itimer object which can be used in either `delete-itimer'
+or `cancel-timer'."
+      (let ((itimers (list nil)))
+	(setcar
+	 itimers
+	 (apply #'start-itimer "fixed-run-at-time"
+		(lambda (itimers repeat function &rest args)
+		  (let ((itimer (car itimers)))
+		    (if repeat
+			(progn
+			  (set-itimer-function
+			   itimer
+			   (lambda (itimer repeat function &rest args)
+			     (set-itimer-restart itimer repeat)
+			     (set-itimer-function itimer function)
+			     (set-itimer-function-arguments itimer args)
+			     (apply function args)))
+			  (set-itimer-function-arguments
+			   itimer
+			   (append (list itimer repeat function) args)))
+		      (set-itimer-function
+		       itimer
+		       (lambda (itimer function &rest args)
+			 (delete-itimer itimer)
+			 (apply function args)))
+		      (set-itimer-function-arguments
+		       itimer
+		       (append (list itimer function) args)))))
+		1e-9 (if time (max time 1e-9) 1e-9)
+		nil t itimers repeat function args))))))
+
+
 ;;; @ to avoid bug of XEmacs 19.14
 ;;;
 
@@ -105,6 +218,17 @@ When called interactively, prompt for the name of the color to use."
 (defalias-maybe 'line-beginning-position 'point-at-bol)
 (defalias-maybe 'line-end-position 'point-at-eol)
 
+;;; @ XEmacs 21 emulation
+;;;
+
+;; XEmacs 20.5 and later: (set-extent-properties EXTENT PLIST)
+(defun-maybe set-extent-properties (extent plist)
+  "Change some properties of EXTENT.
+PLIST is a property list.
+For a list of built-in properties, see `set-extent-property'."
+  (while plist
+    (set-extent-property extent (car plist) (cadr plist))
+    (setq plist (cddr plist))))  
 
 ;;; @ end
 ;;;