(char-ref-p): New function.

(char-ref=): New function.
(char-spec=): New function.
(what-char-definition): If a target character is a builtin character,
display a corresponding ordinary character as a comment.

diff --git a/lisp/utf-2000/char-db-util.el b/lisp/utf-2000/char-db-util.el
index f175cec..89e99e5 100644 (file)
--- a/lisp/utf-2000/char-db-util.el
+++ b/lisp/utf-2000/char-db-util.el
@@ -71,6 +71,34 @@
        (aset v 34 (make-char 'chinese-gb2312 #x62 #x3A)))
     v))
 
+;;;###autoload
+(defun char-ref-p (obj)
+  (and (consp obj)
+       (keywordp (car obj))))
+
+;;;###autoload
+(defun char-ref= (cr1 cr2)
+  (cond ((char-ref-p cr1)
+        (if (char-ref-p cr2)
+            (char-spec= (plist-get cr1 :char)
+                        (plist-get cr2 :char))
+          (char-spec= (plist-get cr1 :char) cr2)))
+       (t
+        (char-spec= cr1
+                    (if (char-ref-p cr2)
+                        (plist-get cr2 :char)
+                      cr2)))))
+
+;;;###autoload
+(defun char-spec= (cs1 cs2)
+  (if (characterp cs1)
+      (if (characterp cs2)
+         (eq cs1 cs2)
+       (eq cs1 (find-char cs2)))
+    (if (characterp cs2)
+       (eq (find-char cs1) cs2)
+      (eq (find-char cs1) (find-char cs2)))))
+
 (defun char-attribute-name< (ka kb)
   (cond
    ((find-charset ka)
@@ -914,6 +942,9 @@
     (condition-case err
        (progn
          (insert-char-data-with-variant char 'printable)
+         (unless (char-attribute-alist char)
+           (insert (format ";; = %c\n"
+                           (apply #'make-char (split-char char)))))
           ;; (char-db-update-comment)
          (set-buffer-modified-p nil)
          (view-mode the-buf (lambda (buf)