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1 | ;;; underline.el --- insert/remove underlining (done by overstriking) in Emacs. |
2 | ||
e5167999 ER |
3 | ;; Maintainer: FSF |
4 | ;; Last-Modified: 30 May 1988 | |
d7b4d18f | 5 | ;; Keywords: wp |
e5167999 | 6 | |
a2535589 JA |
7 | ;; Copyright (C) 1985 Free Software Foundation, Inc. |
8 | ||
9 | ;; This file is part of GNU Emacs. | |
10 | ||
11 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
12 | ;; it under the terms of the GNU General Public License as published by | |
e5167999 | 13 | ;; the Free Software Foundation; either version 2, or (at your option) |
a2535589 JA |
14 | ;; any later version. |
15 | ||
16 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
17 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | ;; GNU General Public License for more details. | |
20 | ||
21 | ;; You should have received a copy of the GNU General Public License | |
22 | ;; along with GNU Emacs; see the file COPYING. If not, write to | |
23 | ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | |
24 | ||
e5167999 | 25 | ;;; Code: |
a2535589 | 26 | |
f9f9507e | 27 | ;;;###autoload |
a2535589 JA |
28 | (defun underline-region (start end) |
29 | "Underline all nonblank characters in the region. | |
30 | Works by overstriking underscores. | |
31 | Called from program, takes two arguments START and END | |
32 | which specify the range to operate on." | |
33 | (interactive "r") | |
34 | (save-excursion | |
35 | (let ((end1 (make-marker))) | |
36 | (move-marker end1 (max start end)) | |
37 | (goto-char (min start end)) | |
38 | (while (< (point) end1) | |
39 | (or (looking-at "[_\^@- ]") | |
40 | (insert "_\b")) | |
41 | (forward-char 1))))) | |
42 | ||
f9f9507e | 43 | ;;;###autoload |
a2535589 JA |
44 | (defun ununderline-region (start end) |
45 | "Remove all underlining (overstruck underscores) in the region. | |
46 | Called from program, takes two arguments START and END | |
47 | which specify the range to operate on." | |
48 | (interactive "r") | |
49 | (save-excursion | |
50 | (let ((end1 (make-marker))) | |
51 | (move-marker end1 (max start end)) | |
52 | (goto-char (min start end)) | |
53 | (while (re-search-forward "_\b\\|\b_" end1 t) | |
54 | (delete-char -2))))) | |
d501f516 ER |
55 | |
56 | ;;; underline.el ends here |