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Annotation of GNUtools/emacs/lisp/underline.el, revision 1.1

1.1     ! root        1: ;; Insert or remove underlining (done by overstriking) in Emacs.
        !             2: ;; Copyright (C) 1985 Free Software Foundation, Inc.
        !             3: 
        !             4: ;; This file is part of GNU Emacs.
        !             5: 
        !             6: ;; GNU Emacs is free software; you can redistribute it and/or modify
        !             7: ;; it under the terms of the GNU General Public License as published by
        !             8: ;; the Free Software Foundation; either version 1, or (at your option)
        !             9: ;; any later version.
        !            10: 
        !            11: ;; GNU Emacs is distributed in the hope that it will be useful,
        !            12: ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            13: ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        !            14: ;; GNU General Public License for more details.
        !            15: 
        !            16: ;; You should have received a copy of the GNU General Public License
        !            17: ;; along with GNU Emacs; see the file COPYING.  If not, write to
        !            18: ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
        !            19: 
        !            20: 
        !            21: (defun underline-region (start end)
        !            22:   "Underline all nonblank characters in the region.
        !            23: Works by overstriking underscores.
        !            24: Called from program, takes two arguments START and END
        !            25: which specify the range to operate on."
        !            26:   (interactive "r")
        !            27:   (save-excursion
        !            28:    (let ((end1 (make-marker)))
        !            29:      (move-marker end1 (max start end))
        !            30:      (goto-char (min start end))
        !            31:      (while (< (point) end1)
        !            32:        (or (looking-at "[_\^@- ]")
        !            33:           (insert "_"))
        !            34:        (forward-char 1)))))
        !            35: 
        !            36: (defun ununderline-region (start end)
        !            37:   "Remove all underlining (overstruck underscores) in the region.
        !            38: Called from program, takes two arguments START and END
        !            39: which specify the range to operate on."
        !            40:   (interactive "r")
        !            41:   (save-excursion
        !            42:    (let ((end1 (make-marker)))
        !            43:      (move-marker end1 (max start end))
        !            44:      (goto-char (min start end))
        !            45:      (while (search-forward "_" end1 t)
        !            46:        (delete-char -2)))))

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