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+;; Basic editing commands for Emacs
+;; Copyright (C) 1989 Free Software Foundation, Inc.
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs is free software; you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation; either version 1, or (at your option)
+;; any later version.
+
+;; GNU Emacs is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with GNU Emacs; see the file COPYING.  If not, write to
+;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+
+
+(defun copy-from-above-command (&optional arg)
+  "Copy characters from previous nonblank line, starting just above point.
+Copy ARG characters, but not past the end of that line.
+If no argument given, copy the entire rest of the line.
+The characters copied are inserted in the buffer before point."
+  (interactive "P")
+  (let ((cc (current-column))
+	n
+	(string ""))
+    (save-excursion
+      (beginning-of-line)
+      (backward-char 1)
+      (skip-chars-backward "\ \t\n")
+      (move-to-column cc)
+      ;; Default is enough to copy the whole rest of the line.
+      (setq n (if arg (prefix-numeric-value arg) (point-max)))
+      ;; If current column winds up in middle of a tab,
+      ;; copy appropriate number of "virtual" space chars.
+      (if (< cc (current-column))
+	  (if (= (preceding-char) ?\t)
+	      (progn
+		(setq string (make-string (min n (- (current-column) cc)) ?\ ))
+		(setq n (- n (min n (- (current-column) cc)))))
+	    ;; In middle of ctl char => copy that whole char.
+	    (backward-char 1)))
+      (setq string (concat string
+			   (buffer-substring
+			    (point)
+			    (min (save-excursion (end-of-line) (point))
+				 (+ n (point)))))))
+    (insert string)))