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- ;;; underline.el --- insert/remove underlining (done by overstriking) in Emacs.
-
- ;; Copyright (C) 1985 Free Software Foundation, Inc.
-
- ;; Maintainer: FSF
- ;; Keywords: wp
-
- ;; This file is part of GNU Emacs.
-
- ;; GNU Emacs is free software; you can redistribute it and/or modify
- ;; it under the terms of the GNU General Public License as published by
- ;; the Free Software Foundation; either version 2, or (at your option)
- ;; any later version.
-
- ;; GNU Emacs is distributed in the hope that it will be useful,
- ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
- ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- ;; GNU General Public License for more details.
-
- ;; You should have received a copy of the GNU General Public License
- ;; along with GNU Emacs; see the file COPYING. If not, write to the
- ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- ;; Boston, MA 02111-1307, USA.
-
- ;;; Commentary:
-
- ;; This package deals with the primitive form of underlining
- ;; consisting of prefixing each character with "_\^h". The entry
- ;; point `underline-region' performs such underlining on a region.
- ;; The entry point `ununderline-region' removes it.
-
- ;;; Code:
-
- ;;;###autoload
- (defun underline-region (start end)
- "Underline all nonblank characters in the region.
- Works by overstriking underscores.
- Called from program, takes two arguments START and END
- which specify the range to operate on."
- (interactive "r")
- (save-excursion
- (let ((end1 (make-marker)))
- (move-marker end1 (max start end))
- (goto-char (min start end))
- (while (< (point) end1)
- (or (looking-at "[_\^@- ]")
- (insert "_\b"))
- (forward-char 1)))))
-
- ;;;###autoload
- (defun ununderline-region (start end)
- "Remove all underlining (overstruck underscores) in the region.
- Called from program, takes two arguments START and END
- which specify the range to operate on."
- (interactive "r")
- (save-excursion
- (let ((end1 (make-marker)))
- (move-marker end1 (max start end))
- (goto-char (min start end))
- (while (re-search-forward "_\b\\|\b_" end1 t)
- (delete-char -2)))))
-
- ;;; underline.el ends here
-