HCoop / bpt / emacs.git / blame
| Commit | Line | Data |
|---|---|---|
| c88ab9ce ER |
1 | ;;; tabify.el --- tab conversion commands for Emacs |
| 2 | ||
| a2535589 JA |
3 | ;; Copyright (C) 1985 Free Software Foundation, Inc. |
| 4 | ||
| 58142744 ER |
5 | ;; Maintainer: FSF |
| 6 | ||
| a2535589 JA |
7 | ;; This file is part of GNU Emacs. |
| 8 | ||
| 9 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
| 10 | ;; it under the terms of the GNU General Public License as published by | |
| e5167999 | 11 | ;; the Free Software Foundation; either version 2, or (at your option) |
| a2535589 JA |
12 | ;; any later version. |
| 13 | ||
| 14 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
| 15 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 16 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 17 | ;; GNU General Public License for more details. | |
| 18 | ||
| 19 | ;; You should have received a copy of the GNU General Public License | |
| 20 | ;; along with GNU Emacs; see the file COPYING. If not, write to | |
| 21 | ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | |
| 22 | ||
| 22a89ee8 | 23 | ;;; Code: |
| a2535589 | 24 | |
| f9f9507e | 25 | ;;;###autoload |
| a2535589 JA |
26 | (defun untabify (start end) |
| 27 | "Convert all tabs in region to multiple spaces, preserving columns. | |
| 28 | The variable tab-width controls the action." | |
| 29 | (interactive "r") | |
| 30 | (save-excursion | |
| 31 | (save-restriction | |
| 32 | (narrow-to-region start end) | |
| 33 | (goto-char start) | |
| 34 | (while (search-forward "\t" nil t) ; faster than re-search | |
| 35 | (let ((start (point)) | |
| 36 | (column (current-column)) | |
| 37 | (indent-tabs-mode nil)) | |
| 38 | (skip-chars-backward "\t") | |
| 39 | (delete-region start (point)) | |
| 40 | (indent-to column)))))) | |
| 41 | ||
| f9f9507e | 42 | ;;;###autoload |
| a2535589 JA |
43 | (defun tabify (start end) |
| 44 | "Convert multiple spaces in region to tabs when possible. | |
| 45 | A group of spaces is partially replaced by tabs | |
| 46 | when this can be done without changing the column they end at. | |
| 47 | The variable tab-width controls the action." | |
| 48 | (interactive "r") | |
| 49 | (save-excursion | |
| 50 | (save-restriction | |
| 51 | (narrow-to-region start end) | |
| 52 | (goto-char start) | |
| 53 | (while (re-search-forward "[ \t][ \t][ \t]*" nil t) | |
| 54 | (let ((column (current-column)) | |
| 55 | (indent-tabs-mode t)) | |
| 56 | (delete-region (match-beginning 0) (point)) | |
| 57 | (indent-to column)))))) | |
| c88ab9ce ER |
58 | |
| 59 | ;;; tabify.el ends here |