;;; indent.el --- indentation commands for Emacs
-;; Copyright (C) 1985 Free Software Foundation, Inc.
+;; Copyright (C) 1985, 1995 Free Software Foundation, Inc.
;; Maintainer: FSF
;; 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.
+;; along with GNU Emacs; see the file COPYING. If not, write to the
+;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+;; Boston, MA 02111-1307, USA.
;;; Commentary:
;;; Code:
-(defvar standard-indent 4 "\
-Default number of columns for margin-changing functions to indent.")
+(defgroup indent nil
+ "Indentation commands"
+ :group 'editing)
-(defvar indent-line-function 'indent-to-left-margin "\
-Function to indent current line.")
+(defcustom standard-indent 4
+ "*Default number of columns for margin-changing functions to indent."
+ :group 'indent
+ :type 'integer)
+
+(defvar indent-line-function 'indent-to-left-margin
+ "Function to indent current line.")
(defun indent-according-to-mode ()
"Indent line in proper way for current major mode."
(interactive)
(funcall indent-line-function))
-(defun indent-for-tab-command ()
+(defun indent-for-tab-command (&optional prefix-arg)
"Indent line in proper way for current major mode."
- (interactive)
+ (interactive "P")
(if (eq indent-line-function 'indent-to-left-margin)
- (insert-tab)
- (funcall indent-line-function)))
-
-(defun insert-tab ()
- (if abbrev-mode
- (expand-abbrev))
- (if indent-tabs-mode
- (insert ?\t)
- (indent-to (* tab-width (1+ (/ (current-column) tab-width))))))
+ (insert-tab prefix-arg)
+ (if prefix-arg
+ (funcall indent-line-function prefix-arg)
+ (funcall indent-line-function))))
+
+(defun insert-tab (&optional prefix-arg)
+ (let ((count (prefix-numeric-value prefix-arg)))
+ (if (and abbrev-mode
+ (eq (char-syntax (preceding-char)) ?w))
+ (expand-abbrev))
+ (if indent-tabs-mode
+ (insert-char ?\t count)
+ (indent-to (* tab-width (+ count (/ (current-column) tab-width)))))))
(defun indent-rigidly (start end arg)
"Indent all lines starting in the region sideways by ARG columns.
(back-to-indentation)
(let ((cur-col (current-column)))
(cond ((< cur-col column)
+ (if (>= (- column (* (/ cur-col tab-width) tab-width)) tab-width)
+ (delete-region (point)
+ (progn (skip-chars-backward " ") (point))))
(indent-to column))
((> cur-col column) ; too far right (after tab?)
(delete-region (progn (move-to-column column t) (point))
interactively or with optional argument FORCE, it will be fixed."
(interactive (list (prefix-numeric-value current-prefix-arg) t))
(beginning-of-line n)
- (let ((lm (current-left-margin)))
- (if (memq (current-justification) '(right center))
- (move-to-column lm)
- (skip-chars-forward " \t"))
- (let ((cc (current-column)))
- (cond ((> cc lm)
- (if (> (move-to-column lm force) lm)
- ;; If lm is in a tab and we are not forcing, move before tab
- (backward-char 1)))
- ((and force (< cc lm))
- (indent-to-left-margin))))))
+ (skip-chars-forward " \t")
+ (let ((lm (current-left-margin))
+ (cc (current-column)))
+ (cond ((> cc lm)
+ (if (> (move-to-column lm force) lm)
+ ;; If lm is in a tab and we are not forcing, move before tab
+ (backward-char 1)))
+ ((and force (< cc lm))
+ (indent-to-left-margin)))))
;; This is the default indent-line-function,
;; used in Fundamental Mode, Text Mode, etc.
(defun set-right-margin (from to lm)
"Set the right margin of the region to WIDTH.
If `auto-fill-mode' is active, re-fill the region to fit the new margin."
- (interactive "r\nNSet left margin to column: ")
+ (interactive "r\nNSet right margin to width: ")
(if (interactive-p) (setq lm (prefix-numeric-value lm)))
(save-excursion
(goto-char from)
(buffer-substring
(point) (min (point-max) (+ (length fill-prefix) (point)))))
(forward-char (length fill-prefix)))
- (if (and adaptive-fill-mode
+ (if (and adaptive-fill-mode adaptive-fill-regexp
(looking-at adaptive-fill-regexp))
(goto-char (match-end 0))))
;; Skip centering or flushright indentation
(skip-chars-forward " \t")))
(defvar indent-region-function nil
- "Function which is short cut to indent region using indent-according-to-mode.
-A value of nil means really run indent-according-to-mode on each line.")
+ "Short cut function to indent region using `indent-according-to-mode'.
+A value of nil means really run `indent-according-to-mode' on each line.")
(defun indent-region (start end column)
"Indent each nonblank line in the region.
-With no argument, indent each line using `indent-according-to-mode',
+With prefix no argument, indent each line using `indent-according-to-mode',
or use `indent-region-function' to do the whole region if that's non-nil.
If there is a fill prefix, make each line start with the fill prefix.
With argument COLUMN, indent each line to that column.
-Called from a program, takes three args: START, END and COLUMN."
+
+When you call this from a program, START and END specify
+the region to indent, and COLUMN specifies the indentation column.
+If COLUMN is nil, then indent each line according to the mode."
(interactive "r\nP")
(if (null column)
(if fill-prefix
(defun indent-relative (&optional unindented-ok)
"Space out to under next indent point in previous nonblank line.
An indent point is a non-whitespace character following whitespace.
+The following line shows the indentation points in this line.
+ ^ ^ ^ ^ ^ ^ ^ ^ ^
If the previous nonblank line has no indent points beyond the
column point starts at, `tab-to-tab-stop' is done instead."
(interactive "P")
- (if abbrev-mode (expand-abbrev))
+ (if (and abbrev-mode
+ (eq (char-syntax (preceding-char)) ?w))
+ (expand-abbrev))
(let ((start-column (current-column))
indent)
(save-excursion
(move-marker opoint nil))
(tab-to-tab-stop))))
-(defvar tab-stop-list
+(defcustom tab-stop-list
'(8 16 24 32 40 48 56 64 72 80 88 96 104 112 120)
- "*List of tab stop positions used by `tab-to-tab-stops'.
-This should be a list of integers, ordered from smallest to largest.")
+ "*List of tab stop positions used by `tab-to-tab-stop'.
+This should be a list of integers, ordered from smallest to largest."
+ :group 'indent
+ :type '(repeat integer))
(defvar edit-tab-stops-map nil "Keymap used in `edit-tab-stops'.")
(if edit-tab-stops-map
The variable `tab-stop-list' is a list of columns at which there are tab stops.
Use \\[edit-tab-stops] to edit them interactively."
(interactive)
- (if abbrev-mode (expand-abbrev))
+ (and abbrev-mode (= (char-syntax (preceding-char)) ?w)
+ (expand-abbrev))
(let ((tabs tab-stop-list))
(while (and tabs (>= (current-column) (car tabs)))
(setq tabs (cdr tabs)))
HCoop / bpt / emacs.git / blobdiff