Commit | Line | Data |
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55535639 | 1 | ;;; underline.el --- insert/remove underlining (done by overstriking) in Emacs |
d501f516 | 2 | |
f2e3589a | 3 | ;; Copyright (C) 1985, 2001, 2002, 2003, 2004, 2005, |
5df4f04c | 4 | ;; 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc. |
58142744 | 5 | |
e5167999 | 6 | ;; Maintainer: FSF |
d7b4d18f | 7 | ;; Keywords: wp |
e5167999 | 8 | |
a2535589 JA |
9 | ;; This file is part of GNU Emacs. |
10 | ||
1fecc8fe | 11 | ;; GNU Emacs is free software: you can redistribute it and/or modify |
a2535589 | 12 | ;; it under the terms of the GNU General Public License as published by |
1fecc8fe GM |
13 | ;; the Free Software Foundation, either version 3 of the License, or |
14 | ;; (at your option) any later version. | |
a2535589 JA |
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 | |
1fecc8fe | 22 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
a2535589 | 23 | |
c91c4e6d ER |
24 | ;;; Commentary: |
25 | ||
26 | ;; This package deals with the primitive form of underlining | |
27 | ;; consisting of prefixing each character with "_\^h". The entry | |
28 | ;; point `underline-region' performs such underlining on a region. | |
29 | ;; The entry point `ununderline-region' removes it. | |
30 | ||
e5167999 | 31 | ;;; Code: |
a2535589 | 32 | |
f9f9507e | 33 | ;;;###autoload |
a2535589 JA |
34 | (defun underline-region (start end) |
35 | "Underline all nonblank characters in the region. | |
36 | Works by overstriking underscores. | |
37 | Called from program, takes two arguments START and END | |
38 | which specify the range to operate on." | |
8371c2f2 | 39 | (interactive "*r") |
a2535589 JA |
40 | (save-excursion |
41 | (let ((end1 (make-marker))) | |
42 | (move-marker end1 (max start end)) | |
43 | (goto-char (min start end)) | |
44 | (while (< (point) end1) | |
45 | (or (looking-at "[_\^@- ]") | |
af282089 | 46 | (insert "_\b")) |
a2535589 JA |
47 | (forward-char 1))))) |
48 | ||
f9f9507e | 49 | ;;;###autoload |
a2535589 JA |
50 | (defun ununderline-region (start end) |
51 | "Remove all underlining (overstruck underscores) in the region. | |
52 | Called from program, takes two arguments START and END | |
53 | which specify the range to operate on." | |
8371c2f2 | 54 | (interactive "*r") |
a2535589 JA |
55 | (save-excursion |
56 | (let ((end1 (make-marker))) | |
57 | (move-marker end1 (max start end)) | |
58 | (goto-char (min start end)) | |
af282089 | 59 | (while (re-search-forward "_\b\\|\b_" end1 t) |
a2535589 | 60 | (delete-char -2))))) |
d501f516 | 61 | |
896546cd RS |
62 | (provide 'underline) |
63 | ||
cbee283d | 64 | ;; arch-tag: e7b48582-c3ea-4386-987a-87415f3c372a |
d501f516 | 65 | ;;; underline.el ends here |