X-Git-Url: https://git.hcoop.net/bpt/emacs.git/blobdiff_plain/d29ee6b1a110cf5d170a10317a96acbbd4a1c68b..3a0f6aac0db3b1961c759a278d2bc67b501ddd0a:/lisp/indent.el

diff --git a/lisp/indent.el b/lisp/indent.el
index 225395dcc8..f942847ec6 100644
--- a/lisp/indent.el
+++ b/lisp/indent.el
@@ -1,16 +1,16 @@
 ;;; indent.el --- indentation commands for Emacs
 
 ;; Copyright (C) 1985, 1995, 2001, 2002, 2003, 2004,
-;;   2005, 2006, 2007 Free Software Foundation, Inc.
+;;   2005, 2006, 2007, 2008 Free Software Foundation, Inc.
 
 ;; Maintainer: FSF
 
 ;; This file is part of GNU Emacs.
 
-;; GNU Emacs is free software; you can redistribute it and/or modify
+;; 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 3, or (at your option)
-;; any later version.
+;; the Free Software Foundation, either version 3 of the License, 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
@@ -18,9 +18,7 @@
 ;; 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, Inc., 51 Franklin Street, Fifth Floor,
-;; Boston, MA 02110-1301, USA.
+;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
 
 ;;; Commentary:
 
@@ -42,7 +40,7 @@
   "Function to indent the current line.
 This function will be called with no arguments.
 If it is called somewhere where auto-indentation cannot be done
-\(f.ex. inside a string), the function should simply return `noindent'.
+\(e.g. inside a string), the function should simply return `noindent'.
 Setting this function is all you need to make TAB indent appropriately.
 Don't rebind TAB unless you really need to.")
 
@@ -82,14 +80,20 @@ special; we don't actually use them here."
 Depending on `tab-always-indent', either insert a tab or indent.
 If initial point was within line's indentation, position after
 the indentation.  Else stay at same point in text.
-If `transient-mark-mode' is turned on the region is active,
-indent the region.
+
+If a prefix argument is given, also rigidly indent the entire
+balanced expression which starts at the beginning the current
+line to reflect the current line's change in indentation.
+
+If `transient-mark-mode' is turned on and the region is active,
+indent the region (in this case, any prefix argument is ignored).
+
 The function actually called to indent the line is determined by the value of
 `indent-line-function'."
-  (interactive "p")
+  (interactive "P")
   (cond
    ;; The region is active, indent it.
-   ((and arg transient-mark-mode mark-active
+   ((and transient-mark-mode mark-active
 	 (not (eq (region-beginning) (region-end))))
     (indent-region (region-beginning) (region-end)))
    ((or ;; indent-to-left-margin is only meant for indenting,
@@ -99,13 +103,27 @@ The function actually called to indent the line is determined by the value of
 	     (or (> (current-column) (current-indentation))
 		 (eq this-command last-command))))
     (insert-tab arg))
-   ;; Those functions are meant specifically for tabbing and not for
-   ;; indenting, so we can't pass them to indent-according-to-mode.
-   ((memq indent-line-function '(indent-relative indent-relative-maybe))
-    (funcall indent-line-function))
-   ;; Indent the line.
    (t
-    (indent-according-to-mode))))
+    (let ((end-marker
+	   (and arg
+		(save-excursion
+		  (forward-line 0) (forward-sexp) (point-marker))))
+	  (old-indent
+	   (current-indentation)))
+
+      ;; Indent the line.
+      (funcall indent-line-function)
+
+      ;; If a prefix argument was given, rigidly indent the following
+      ;; sexp to match the change in the current line's indentation.
+      ;;
+      (when arg
+	(let ((indentation-change (- (current-indentation) old-indent)))
+	  (unless (zerop indentation-change)
+	    (save-excursion
+	      (forward-line 1)
+	      (when (< (point) end-marker)
+		(indent-rigidly (point) end-marker indentation-change))))))))))
 
 (defun insert-tab (&optional arg)
   (let ((count (prefix-numeric-value arg)))
@@ -557,5 +575,5 @@ Use \\[edit-tab-stops] to edit them interactively."
 (define-key ctl-x-map "\t" 'indent-rigidly)
 (define-key esc-map "i" 'tab-to-tab-stop)
 
-;;; arch-tag: f402b2a7-e44f-492f-b5b8-38996020b7c3
+;; arch-tag: f402b2a7-e44f-492f-b5b8-38996020b7c3
 ;;; indent.el ends here