HCoop / bpt / emacs.git / blame
| Commit | Line | Data |
|---|---|---|
| 55535639 | 1 | ;;; underline.el --- insert/remove underlining (done by overstriking) in Emacs |
| d501f516 | 2 | |
| ba318903 | 3 | ;; Copyright (C) 1985, 2001-2014 Free Software Foundation, Inc. |
| 58142744 | 4 | |
| 34dc21db | 5 | ;; Maintainer: emacs-devel@gnu.org |
| d7b4d18f | 6 | ;; Keywords: wp |
| e5167999 | 7 | |
| a2535589 JA |
8 | ;; This file is part of GNU Emacs. |
| 9 | ||
| 1fecc8fe | 10 | ;; GNU Emacs is free software: you can redistribute it and/or modify |
| a2535589 | 11 | ;; it under the terms of the GNU General Public License as published by |
| 1fecc8fe GM |
12 | ;; the Free Software Foundation, either version 3 of the License, or |
| 13 | ;; (at your option) any later version. | |
| a2535589 JA |
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 | |
| 1fecc8fe | 21 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
| a2535589 | 22 | |
| c91c4e6d ER |
23 | ;;; Commentary: |
| 24 | ||
| 25 | ;; This package deals with the primitive form of underlining | |
| 26 | ;; consisting of prefixing each character with "_\^h". The entry | |
| 27 | ;; point `underline-region' performs such underlining on a region. | |
| 28 | ;; The entry point `ununderline-region' removes it. | |
| 29 | ||
| e5167999 | 30 | ;;; Code: |
| a2535589 | 31 | |
| f9f9507e | 32 | ;;;###autoload |
| a2535589 JA |
33 | (defun underline-region (start end) |
| 34 | "Underline all nonblank characters in the region. | |
| 35 | Works by overstriking underscores. | |
| 36 | Called from program, takes two arguments START and END | |
| 37 | which specify the range to operate on." | |
| 8371c2f2 | 38 | (interactive "*r") |
| a2535589 JA |
39 | (save-excursion |
| 40 | (let ((end1 (make-marker))) | |
| 41 | (move-marker end1 (max start end)) | |
| 42 | (goto-char (min start end)) | |
| 43 | (while (< (point) end1) | |
| 44 | (or (looking-at "[_\^@- ]") | |
| af282089 | 45 | (insert "_\b")) |
| a2535589 JA |
46 | (forward-char 1))))) |
| 47 | ||
| f9f9507e | 48 | ;;;###autoload |
| a2535589 JA |
49 | (defun ununderline-region (start end) |
| 50 | "Remove all underlining (overstruck underscores) in the region. | |
| 51 | Called from program, takes two arguments START and END | |
| 52 | which specify the range to operate on." | |
| 8371c2f2 | 53 | (interactive "*r") |
| a2535589 JA |
54 | (save-excursion |
| 55 | (let ((end1 (make-marker))) | |
| 56 | (move-marker end1 (max start end)) | |
| 57 | (goto-char (min start end)) | |
| af282089 | 58 | (while (re-search-forward "_\b\\|\b_" end1 t) |
| a2535589 | 59 | (delete-char -2))))) |
| d501f516 | 60 | |
| 896546cd RS |
61 | (provide 'underline) |
| 62 | ||
| d501f516 | 63 | ;;; underline.el ends here |