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, |
12dc447f | 4 | ;; 2006, 2007, 2008 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 | ||
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 | |
5a9dffec | 13 | ;; the Free Software Foundation; either version 3, 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 | |
b578f267 | 22 | ;; along with GNU Emacs; see the file COPYING. If not, write to the |
4fc5845f LK |
23 | ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
24 | ;; Boston, MA 02110-1301, USA. | |
a2535589 | 25 | |
c91c4e6d ER |
26 | ;;; Commentary: |
27 | ||
28 | ;; This package deals with the primitive form of underlining | |
29 | ;; consisting of prefixing each character with "_\^h". The entry | |
30 | ;; point `underline-region' performs such underlining on a region. | |
31 | ;; The entry point `ununderline-region' removes it. | |
32 | ||
e5167999 | 33 | ;;; Code: |
a2535589 | 34 | |
f9f9507e | 35 | ;;;###autoload |
a2535589 JA |
36 | (defun underline-region (start end) |
37 | "Underline all nonblank characters in the region. | |
38 | Works by overstriking underscores. | |
39 | Called from program, takes two arguments START and END | |
40 | which specify the range to operate on." | |
8371c2f2 | 41 | (interactive "*r") |
a2535589 JA |
42 | (save-excursion |
43 | (let ((end1 (make-marker))) | |
44 | (move-marker end1 (max start end)) | |
45 | (goto-char (min start end)) | |
46 | (while (< (point) end1) | |
47 | (or (looking-at "[_\^@- ]") | |
af282089 | 48 | (insert "_\b")) |
a2535589 JA |
49 | (forward-char 1))))) |
50 | ||
f9f9507e | 51 | ;;;###autoload |
a2535589 JA |
52 | (defun ununderline-region (start end) |
53 | "Remove all underlining (overstruck underscores) in the region. | |
54 | Called from program, takes two arguments START and END | |
55 | which specify the range to operate on." | |
8371c2f2 | 56 | (interactive "*r") |
a2535589 JA |
57 | (save-excursion |
58 | (let ((end1 (make-marker))) | |
59 | (move-marker end1 (max start end)) | |
60 | (goto-char (min start end)) | |
af282089 | 61 | (while (re-search-forward "_\b\\|\b_" end1 t) |
a2535589 | 62 | (delete-char -2))))) |
d501f516 | 63 | |
896546cd RS |
64 | (provide 'underline) |
65 | ||
cbee283d | 66 | ;; arch-tag: e7b48582-c3ea-4386-987a-87415f3c372a |
d501f516 | 67 | ;;; underline.el ends here |