;;; text-mode.el --- text mode, and its idiosyncratic commands.
-;; Copyright (C) 1985, 1992 Free Software Foundation, Inc.
+;; Copyright (C) 1985, 1992, 1994 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 text-mode-hook nil
+ "Normal hook run when entering Text mode and many related modes.")
+
+(defvar text-mode-variant nil
+ "Non-nil if this buffer's major mode is a variant of Text mode.")
+
(defvar text-mode-syntax-table nil
"Syntax table used while in text mode.")
(if text-mode-map
()
(setq text-mode-map (make-sparse-keymap))
- (define-key text-mode-map "\t" 'tab-to-tab-stop)
+ (define-key text-mode-map "\e\t" 'ispell-complete-word)
+ (define-key text-mode-map "\t" 'indent-relative)
(define-key text-mode-map "\es" 'center-line)
(define-key text-mode-map "\eS" 'center-paragraph))
\f
-;(defun non-saved-text-mode ()
-; "Like text-mode, but delete auto save file when file is saved for real."
-; (text-mode)
-; (make-local-variable 'delete-auto-save-files)
-; (setq delete-auto-save-files t))
-
(defun text-mode ()
- "Major mode for editing text intended for humans to read. Special commands:\\{text-mode-map}
-Turning on Text mode calls the value of the variable `text-mode-hook',
-if that value is non-nil."
+ "Major mode for editing text written for humans to read.
+In this mode, paragraphs are delimited only by blank or white lines.
+You can thus get the full benefit of adaptive filling
+ (see the variable `adaptive-fill-mode').
+\\{text-mode-map}
+Turning on Text mode runs the normal hook `text-mode-hook'."
(interactive)
(kill-all-local-variables)
(use-local-map text-mode-map)
- (setq mode-name "Text")
- (setq major-mode 'text-mode)
(setq local-abbrev-table text-mode-abbrev-table)
(set-syntax-table text-mode-syntax-table)
+ (make-local-variable 'paragraph-start)
+ (setq paragraph-start (concat "[ \t]*$\\|" page-delimiter))
+ (make-local-variable 'paragraph-separate)
+ (setq paragraph-separate paragraph-start)
+ (setq mode-name "Text")
+ (setq major-mode 'text-mode)
(run-hooks 'text-mode-hook))
-(defvar indented-text-mode-map ()
- "Keymap for Indented Text mode.
-All the commands defined in Text mode are inherited unless overridden.")
-
-(if indented-text-mode-map
- ()
- ;; Make different definintion for TAB before the one in text-mode-map, but
- ;; share the rest.
- (let ((newmap (make-sparse-keymap)))
- (define-key newmap "\t" 'indent-relative)
- (setq indented-text-mode-map (nconc newmap text-mode-map))))
-
-(defun indented-text-mode ()
- "Major mode for editing indented text intended for humans to read.\\{indented-text-mode-map}
-Turning on `indented-text-mode' calls the value of the variable
-`text-mode-hook', if that value is non-nil."
+(defun paragraph-indent-text-mode ()
+ "Major mode for editing text, with leading spaces starting a paragraph.
+In this mode, you do not need blank lines between paragraphs
+when the first line of the following paragraph starts with whitespace.
+Special commands:
+\\{text-mode-map}
+Turning on Paragraph-Indent Text mode runs the normal hooks
+`text-mode-hook' and `paragraph-indent-text-mode-hook'."
(interactive)
(kill-all-local-variables)
(use-local-map text-mode-map)
- (define-abbrev-table 'text-mode-abbrev-table ())
+ (setq mode-name "Parindent")
+ (setq major-mode 'paragraph-indent-text-mode)
(setq local-abbrev-table text-mode-abbrev-table)
(set-syntax-table text-mode-syntax-table)
- (make-local-variable 'indent-line-function)
- (setq indent-line-function 'indent-relative-maybe)
- (use-local-map indented-text-mode-map)
- (setq mode-name "Indented Text")
- (setq major-mode 'indented-text-mode)
- (run-hooks 'text-mode-hook))
-
+ (run-hooks 'text-mode-hook 'paragraph-indent-text-mode-hook))
+
+(defalias 'indented-text-mode 'text-mode)
+
+(defun text-mode-hook-identify ()
+ "Mark that this mode has run `text-mode-hook'.
+This is how `toggle-text-mode-auto-fill' knows which buffers to operate on."
+ (make-local-variable 'text-mode-variant)
+ (setq text-mode-variant t))
+
+(add-hook 'text-mode-hook 'text-mode-hook-identify)
+
+(defun toggle-text-mode-auto-fill ()
+ "Toggle whether to use Auto Fill in Text mode and related modes.
+This command affects all buffers that use modes related to Text mode,
+both existing buffers and buffers that you subsequently create."
+ (interactive)
+ (let ((enable-mode (not (memq 'turn-on-auto-fill text-mode-hook)))
+ (buffers (buffer-list)))
+ (if enable-mode
+ (add-hook 'text-mode-hook 'turn-on-auto-fill)
+ (remove-hook 'text-mode-hook 'turn-on-auto-fill))
+ (while buffers
+ (with-current-buffer (car buffers)
+ (if text-mode-variant
+ (auto-fill-mode (if enable-mode 1 0))))
+ (setq buffers (cdr buffers)))
+ (message "Auto Fill %s in Text modes"
+ (if enable-mode "enabled" "disabled"))))
+\f
(defun center-paragraph ()
"Center each nonblank line in the paragraph at or after point.
See `center-line' for more info."
(center-line))
(forward-line 1)))))
-(defun center-line ()
+(defun center-line (&optional nlines)
"Center the line point is on, within the width specified by `fill-column'.
This means adjusting the indentation so that it equals
-the distance between the end of the text and `fill-column'."
- (interactive)
- (save-excursion
- (let (line-length)
- (beginning-of-line)
- (delete-horizontal-space)
- (end-of-line)
- (delete-horizontal-space)
- (setq line-length (current-column))
- (beginning-of-line)
- (indent-to
- (+ left-margin
- (/ (- fill-column left-margin line-length) 2))))))
+the distance between the end of the text and `fill-column'.
+The argument NLINES says how many lines to center."
+ (interactive "P")
+ (if nlines (setq nlines (prefix-numeric-value nlines)))
+ (while (not (eq nlines 0))
+ (save-excursion
+ (let ((lm (current-left-margin))
+ line-length)
+ (beginning-of-line)
+ (delete-horizontal-space)
+ (end-of-line)
+ (delete-horizontal-space)
+ (setq line-length (current-column))
+ (if (> (- fill-column lm line-length) 0)
+ (indent-line-to
+ (+ lm (/ (- fill-column lm line-length) 2))))))
+ (cond ((null nlines)
+ (setq nlines 0))
+ ((> nlines 0)
+ (setq nlines (1- nlines))
+ (forward-line 1))
+ ((< nlines 0)
+ (setq nlines (1+ nlines))
+ (forward-line -1)))))
;;; text-mode.el ends here