(exec-installed-p): Use `file-executable-p' instead of `file-exists-p'.

[elisp/apel.git] / poe-xemacs.el

diff --git a/poe-xemacs.el b/poe-xemacs.el
index 6fecb42..a6b8516 100644 (file)
--- a/poe-xemacs.el
+++ b/poe-xemacs.el
@@ -1,7 +1,7 @@
-;;; poe-xemacs.el --- poe API implementation for XEmacs
+;;; poe-xemacs.el --- poe submodule for XEmacs -*-byte-compile-dynamic: t;-*-
 
 ;; Copyright (C) 1995 Free Software Foundation, Inc.
-;; Copyright (C) 1995,1996,1997 MORIOKA Tomohiko
+;; Copyright (C) 1995,1996,1997,1998 MORIOKA Tomohiko
 
 ;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp>
 ;; Keywords: emulation, compatibility, XEmacs
@@ -25,11 +25,27 @@
 
 ;;; Code:
 
+;;; @ color
+;;;
+
+
+(eval-when-compile
+  (require 'poe))
+
+(defun-maybe set-cursor-color (color-name)
+  "Set the text cursor color of the selected frame to COLOR.
+When called interactively, prompt for the name of the color to use."
+  (interactive "sColor: ")
+  (set-frame-property (selected-frame) 'cursor-color
+                      (if (color-instance-p color-name)
+                          color-name
+                        (make-color-instance color-name))))
+
+
 ;;; @ face
 ;;;
 
-(or (fboundp 'face-list)
-    (defalias 'face-list 'list-faces))
+(defalias-maybe 'face-list 'list-faces)
 
 (or (memq 'underline (face-list))
     (and (fboundp 'make-face)
@@ -45,11 +61,13 @@
 (condition-case nil
     (require 'overlay)
   (error (defalias 'make-overlay 'make-extent)
+        (defalias 'overlayp 'extentp)
         (defalias 'overlay-put 'set-extent-property)
         (defalias 'overlay-buffer 'extent-buffer)
         (defun move-overlay (extent start end &optional buffer)
           (set-extent-endpoints extent start end)
           )
+        (defalias 'delete-overlay 'detach-extent)
         ))
 
 
@@ -84,15 +102,47 @@
        (concat ancestor (substring filename (match-end 0)))))
     )
 
-    
+
+;;; @ for anything older than XEmacs 20.2
+;;;
+
+;; eval-after-load is not defined in XEmacs but after-load-alist is
+;; usable.  See subr.el in XEmacs.
+
+(defun-maybe eval-after-load (file form)
+  "Arrange that, if FILE is ever loaded, FORM will be run at that time.
+This makes or adds to an entry on `after-load-alist'.
+If FILE is already loaded, evaluate FORM right now.
+It does nothing if FORM is already on the list for FILE.
+FILE should be the name of a library, with no directory name."
+  ;; Make sure there is an element for FILE.
+  (or (assoc file after-load-alist)
+      (setq after-load-alist (cons (list file) after-load-alist)))
+  ;; Add FORM to the element if it isn't there.
+  (let ((elt (assoc file after-load-alist)))
+    (or (member form (cdr elt))
+       (progn
+         (nconc elt (list form))
+         ;; If the file has been loaded already, run FORM right away.
+         (and (assoc file load-history)
+              (eval form)))))
+  form)
+
+;; (defun-maybe eval-after-load (file form)
+;;   (or (assoc file after-load-alist)
+;;       (setq after-load-alist (cons (list file) after-load-alist)))
+;;   (let ((elt (assoc file after-load-alist)))
+;;     (or (member form (cdr elt))
+;;         (nconc elt (list form))))
+;;   form)
+
+
 ;;; @ Emacs 20.3 emulation
 ;;;
 
-(or (fboundp 'line-beginning-position)
-    (defalias 'line-beginning-position 'point-at-bol))
+(defalias-maybe 'line-beginning-position 'point-at-bol)
 
-(or (fboundp 'line-end-position)
-    (defalias 'line-end-position 'point-at-eol))
+(defalias-maybe 'line-end-position 'point-at-eol)
 
 
 ;;; @ end