;;; 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
(funcall indent-line-function)))
(defun indent-for-tab-command (&optional arg)
- "Indent line in proper way for current major mode or insert a tab.
+ "Indent line or region in proper way for current major mode or insert a tab.
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.
-The function actually called to indent is determined by the value of
+
+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")
(cond
+ ;; The region is active, indent it.
+ ((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,
;; so we force it to always insert a tab here.
(eq indent-line-function 'indent-to-left-margin)
(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))
- (t ;; The normal case.
- (indent-according-to-mode))))
+ (t
+ (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)))
;; used in Fundamental Mode, Text Mode, etc.
(defun indent-to-left-margin ()
"Indent current line to the column given by `current-left-margin'."
- (indent-line-to (current-left-margin)))
+ (save-excursion (indent-line-to (current-left-margin)))
+ ;; If we are within the indentation, move past it.
+ (when (save-excursion
+ (skip-chars-backward " \t")
+ (bolp))
+ (skip-chars-forward " \t")))
(defun delete-to-left-margin (&optional from to)
"Remove left margin indentation from a region.
This should be a list of integers, ordered from smallest to largest."
:group 'indent
:type '(repeat integer))
+(put 'tab-stop-list 'safe-local-variable 'listp)
(defvar edit-tab-stops-map
(let ((map (make-sparse-keymap)))