diff lisp/prim/misc.el @ 0:376386a54a3c r19-14

Import from CVS: tag r19-14
author cvs
date Mon, 13 Aug 2007 08:45:50 +0200
parents
children ac2d302a0011
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lisp/prim/misc.el	Mon Aug 13 08:45:50 2007 +0200
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+;;; misc.el --- miscellaneous functions for XEmacs
+
+;; Copyright (C) 1989 Free Software Foundation, Inc.
+
+;; Maintainer: FSF
+
+;; This file is part of XEmacs.
+
+;; XEmacs 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 2, or (at your option)
+;; any later version.
+
+;; XEmacs 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 XEmacs; see the file COPYING.  If not, write to the Free
+;; Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+
+;;; Synched up with: FSF 19.30.
+
+;;; Code:
+
+(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)))
+
+;;; misc.el ends here