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59 lines
2.0 KiB
EmacsLisp
59 lines
2.0 KiB
EmacsLisp
;;; misc.el --- basic editing commands for Emacs
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;; Copyright (C) 1989 Free Software Foundation, Inc.
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;; Maintainer: FSF
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation; either version 2, or (at your option)
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;; any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs; see the file COPYING. If not, write to the
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;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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;; Boston, MA 02111-1307, USA.
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;;; Code:
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(defun copy-from-above-command (&optional arg)
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"Copy characters from previous nonblank line, starting just above point.
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Copy ARG characters, but not past the end of that line.
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If no argument given, copy the entire rest of the line.
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The characters copied are inserted in the buffer before point."
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(interactive "P")
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(let ((cc (current-column))
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n
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(string ""))
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(save-excursion
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(beginning-of-line)
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(backward-char 1)
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(skip-chars-backward "\ \t\n")
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(move-to-column cc)
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;; Default is enough to copy the whole rest of the line.
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(setq n (if arg (prefix-numeric-value arg) (point-max)))
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;; If current column winds up in middle of a tab,
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;; copy appropriate number of "virtual" space chars.
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(if (< cc (current-column))
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(if (= (preceding-char) ?\t)
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(progn
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(setq string (make-string (min n (- (current-column) cc)) ?\ ))
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(setq n (- n (min n (- (current-column) cc)))))
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;; In middle of ctl char => copy that whole char.
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(backward-char 1)))
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(setq string (concat string
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(buffer-substring
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(point)
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(min (save-excursion (end-of-line) (point))
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(+ n (point)))))))
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(insert string)))
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;;; misc.el ends here
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