HCoop / bpt / emacs.git / blame
| Commit | Line | Data |
|---|---|---|
| d501f516 ER |
1 | ;;; underline.el --- insert/remove underlining (done by overstriking) in Emacs. |
| 2 | ||
| 58142744 ER |
3 | ;; Copyright (C) 1985 Free Software Foundation, Inc. |
| 4 | ||
| e5167999 | 5 | ;; Maintainer: FSF |
| d7b4d18f | 6 | ;; Keywords: wp |
| e5167999 | 7 | |
| a2535589 JA |
8 | ;; This file is part of GNU Emacs. |
| 9 | ||
| 10 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
| 11 | ;; it under the terms of the GNU General Public License as published by | |
| e5167999 | 12 | ;; the Free Software Foundation; either version 2, or (at your option) |
| a2535589 JA |
13 | ;; any later version. |
| 14 | ||
| 15 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
| 16 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 17 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 18 | ;; GNU General Public License for more details. | |
| 19 | ||
| 20 | ;; You should have received a copy of the GNU General Public License | |
| 21 | ;; along with GNU Emacs; see the file COPYING. If not, write to | |
| 22 | ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | |
| 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." | |
| 39 | (interactive "r") | |
| 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 "[_\^@- ]") | |
| 46 | (insert "_\b")) | |
| 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." | |
| 54 | (interactive "r") | |
| 55 | (save-excursion | |
| 56 | (let ((end1 (make-marker))) | |
| 57 | (move-marker end1 (max start end)) | |
| 58 | (goto-char (min start end)) | |
| 59 | (while (re-search-forward "_\b\\|\b_" end1 t) | |
| 60 | (delete-char -2))))) | |
| d501f516 ER |
61 | |
| 62 | ;;; underline.el ends here |