1 ;;; inv-xemacs.el --- invisible feature implementation for XEmacs
3 ;; Copyright (C) 1995 Free Software Foundation, Inc.
4 ;; Copyright (C) 1995,1996,1997 MORIOKA Tomohiko
6 ;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp>
7 ;; Keywords: invisible, text-property, region, XEmacs
9 ;; This file is part of APEL (A Portable Emacs Library).
11 ;; This program is free software; you can redistribute it and/or
12 ;; modify it under the terms of the GNU General Public License as
13 ;; published by the Free Software Foundation; either version 2, or (at
14 ;; your option) any later version.
16 ;; This program is distributed in the hope that it will be useful, but
17 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 ;; General Public License for more details.
21 ;; You should have received a copy of the GNU General Public License
22 ;; along with XEmacs; see the file COPYING. If not, write to the Free
23 ;; Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
28 (defmacro enable-invisible ())
30 (defmacro end-of-invisible ())
32 (defun invisible-region (start end)
35 (eq (following-char) ?\n))
36 (setq start (1+ start))
38 (put-text-property start end 'invisible t)
41 (defun visible-region (start end)
42 (put-text-property start end 'invisible nil)
45 (defun invisible-p (pos)
48 (eq (following-char) ?\n))
51 (get-text-property pos 'invisible)
54 (defun next-visible-point (pos)
58 (eq (following-char) ?\n))
61 (or (next-single-property-change pos 'invisible)
70 ;;; inv-xemacs.el ends here