(enable-invisible, end-of-invisible): New macro; copied from

[elisp/semi.git] / mime-edit.el

diff --git a/mime-edit.el b/mime-edit.el
index 290784b..d0ee4a5 100644 (file)
--- a/mime-edit.el
+++ b/mime-edit.el
@@ -7,7 +7,7 @@
 ;; Maintainer: MORIOKA Tomohiko <morioka@jaist.ac.jp>
 ;; Created: 1994/08/21 renamed from mime.el
 ;;     Renamed: 1997/2/21 from tm-edit.el
-;; Version: $Revision: 0.51 $
+;; Version: $Revision: 0.52 $
 ;; Keywords: MIME, multimedia, multilingual, mail, news
 
 ;; This file is part of SEMI (SEMI is Emacs MIME Interfaces).
@@ -121,7 +121,7 @@
 ;;;
 
 (defconst mime-edit-RCS-ID
-  "$Id: mime-edit.el,v 0.51 1997-03-01 02:30:29 tmorioka Exp $")
+  "$Id: mime-edit.el,v 0.52 1997-03-01 03:39:01 tmorioka Exp $")
 
 (defconst mime-edit-version (get-version-string mime-edit-RCS-ID))
 
@@ -664,6 +664,71 @@ Tspecials means any character that matches with it in header must be quoted.")
   )
 ;;; end
 
+;;; @@ visible/invisible
+;;;
+
+(defmacro enable-invisible ())
+
+(defmacro end-of-invisible ())
+
+(cond (running-xemacs
+       (defun invisible-region (start end)
+        (if (save-excursion
+              (goto-char start)
+              (eq (following-char) ?\n)
+              )
+            (setq start (1+ start))
+          )
+        (put-text-property start end 'invisible t)
+        )
+       (defun invisible-p (pos)
+        (if (save-excursion
+              (goto-char pos)
+              (eq (following-char) ?\n)
+              )
+            (setq pos (1+ pos))
+          )
+        (get-text-property pos 'invisible)
+        )
+       )
+      (defun next-visible-point (pos)
+       (save-excursion
+         (if (save-excursion
+               (goto-char pos)
+               (eq (following-char) ?\n)
+               )
+             (setq pos (1+ pos))
+           )
+         (or (next-single-property-change pos 'invisible)
+             (point-max))
+         ))
+      (t
+       (defun invisible-region (start end)
+        (if (save-excursion
+              (goto-char (1- end))
+              (eq (following-char) ?\n)
+              )
+            (setq end (1- end))
+          )
+        (put-text-property start end 'invisible t)
+        )
+       (defun invisible-p (pos)
+        (get-text-property pos 'invisible)
+        )
+       (defun next-visible-point (pos)
+        (save-excursion
+          (goto-char (next-single-property-change pos 'invisible))
+          (if (eq (following-char) ?\n)
+              (forward-char)
+            )
+          (point)
+          ))
+       ))
+
+(defun visible-region (start end)
+  (put-text-property start end 'invisible nil)
+  )
+
 
 ;;; @ functions
 ;;;