80 lines
2.3 KiB
EmacsLisp
80 lines
2.3 KiB
EmacsLisp
;;; inv-18.el --- invisible feature implementation for Emacs 18
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;; Copyright (C) 1995,1996,1997,1998 Free Software Foundation, Inc.
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;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp>
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;; Keywords: invisible, text-property, region, Emacs 18
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;; This file is part of APEL (A Portable Emacs Library).
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;; This program is free software; you can redistribute it and/or
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;; modify it under the terms of the GNU General Public License as
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;; published by the Free Software Foundation; either version 2, or (at
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;; your option) any later version.
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;; This program is distributed in the hope that it will be useful, but
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;; WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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;; General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs; see the file COPYING. If not, write to the
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;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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;; Boston, MA 02110-1301, USA.
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;;; Code:
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(require 'poe)
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(defun enable-invisible ()
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(make-local-variable 'original-selective-display)
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(setq original-selective-display selective-display)
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(setq selective-display t))
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(defun disable-invisible ()
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(setq selective-display
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(and (boundp 'original-selective-display)
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original-selective-display)))
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(defalias 'end-of-invisible 'disable-invisible)
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(make-obsolete 'end-of-invisible 'disable-invisible)
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(defun invisible-region (start end)
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(let ((buffer-read-only nil)
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(modp (buffer-modified-p)))
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(if (save-excursion
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(goto-char (1- end))
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(eq (following-char) ?\n))
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(setq end (1- end)))
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(unwind-protect
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(subst-char-in-region start end ?\n ?\r t)
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(set-buffer-modified-p modp))))
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(defun visible-region (start end)
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(let ((buffer-read-only nil)
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(modp (buffer-modified-p)))
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(unwind-protect
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(subst-char-in-region start end ?\r ?\n t)
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(set-buffer-modified-p modp))))
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(defun invisible-p (pos)
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(save-excursion
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(goto-char pos)
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(eq (following-char) ?\r)))
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(defun next-visible-point (pos)
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(save-excursion
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(goto-char pos)
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(end-of-line)
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(if (eq (following-char) ?\n)
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(forward-char))
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(point)))
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;;; @ end
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;;;
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(require 'product)
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(product-provide (provide 'inv-18) (require 'apel-ver))
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;;; inv-18.el ends here
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