-;;; text-mode.el --- text mode, and its idiosyncratic commands.
+;;; text-mode.el --- text mode, and its idiosyncratic commands
;; Copyright (C) 1985, 1992, 1994 Free Software Foundation, Inc.
;; Maintainer: FSF
+;; Keywords: wp
;; This file is part of GNU Emacs.
;;; Code:
-(defvar text-mode-syntax-table nil
- "Syntax table used while in text mode.")
-
-(defvar text-mode-abbrev-table nil
- "Abbrev table used while in text mode.")
-(define-abbrev-table 'text-mode-abbrev-table ())
-
-(if text-mode-syntax-table
- ()
- (setq text-mode-syntax-table (make-syntax-table))
- (modify-syntax-entry ?\" ". " text-mode-syntax-table)
- (modify-syntax-entry ?\\ ". " text-mode-syntax-table)
- (modify-syntax-entry ?' "w " text-mode-syntax-table))
-
-(defvar text-mode-map nil
- "Keymap for Text mode.
-Many other modes, such as Mail mode, Outline mode and Indented Text mode,
+(defcustom text-mode-hook nil
+ "Normal hook run when entering Text mode and many related modes."
+ :type 'hook
+ :options '(turn-on-auto-fill flyspell-mode)
+ :group 'data)
+
+(defvar text-mode-variant nil
+ "Non-nil if this buffer's major mode is a variant of Text mode.
+Use (derived-mode-p 'text-mode) instead.")
+
+(defvar text-mode-syntax-table
+ (let ((st (make-syntax-table)))
+ (modify-syntax-entry ?\" ". " st)
+ (modify-syntax-entry ?\\ ". " st)
+ ;; We add `p' so that M-c on 'hello' leads to 'Hello' rather than 'hello'.
+ (modify-syntax-entry ?' "w p" st)
+ st)
+ "Syntax table used while in `text-mode'.")
+
+(defvar text-mode-map
+ (let ((map (make-sparse-keymap)))
+ (define-key map "\e\t" 'ispell-complete-word)
+ (define-key map "\es" 'center-line)
+ (define-key map "\eS" 'center-paragraph)
+ map)
+ "Keymap for `text-mode'.
+Many other modes, such as `mail-mode', `outline-mode' and `indented-text-mode',
inherit all the commands defined in this map.")
-(if text-mode-map
- ()
- (setq text-mode-map (make-sparse-keymap))
- (define-key text-mode-map "\e\t" 'ispell-complete-word)
- (define-key text-mode-map "\t" 'tab-to-tab-stop)
- (define-key text-mode-map "\es" 'center-line)
- (define-key text-mode-map "\eS" 'center-paragraph))
-
\f
-(defun text-mode ()
+(define-derived-mode text-mode nil "Text"
"Major mode for editing text written for humans to read.
-In this mode, paragraphs are delimited only by blank lines.
+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 local-abbrev-table text-mode-abbrev-table)
- (set-syntax-table text-mode-syntax-table)
- (make-local-variable 'paragraph-start)
- (setq paragraph-start (concat "$\\|" 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))
-
-(defun spaced-text-mode ()
+ (make-local-variable 'text-mode-variant)
+ (setq text-mode-variant t)
+ (set (make-local-variable 'require-final-newline) t)
+ (set (make-local-variable 'indent-line-function) 'indent-relative))
+
+(define-derived-mode paragraph-indent-text-mode text-mode "Parindent"
"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.
+`paragraph-indent-minor-mode' provides a similar facility as a minor mode.
Special commands:
\\{text-mode-map}
-Turning on Spaced Text mode runs the normal hook `spaced-text-mode-hook'."
+Turning on Paragraph-Indent Text mode runs the normal hooks
+`text-mode-hook' and `paragraph-indent-text-mode-hook'."
+ :abbrev-table nil :syntax-table nil
+ (paragraph-indent-minor-mode))
+
+(defun paragraph-indent-minor-mode ()
+ "Minor 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, as with
+`paragraph-indent-mode'.
+Turning on Paragraph-Indent minor mode runs the normal hook
+`paragraph-indent-text-mode-hook'."
(interactive)
- (kill-all-local-variables)
- (use-local-map text-mode-map)
- (setq mode-name "Spaced Text")
- (setq major-mode 'spaced-text-mode)
- (setq local-abbrev-table text-mode-abbrev-table)
- (set-syntax-table text-mode-syntax-table)
- (run-hooks 'text-mode-hook 'spaced-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 definition 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 text which is often indented.
-This is like Text mode except that TAB runs `indent-relative'.
-\\{text-mode-map}
-Turning on Indented Text mode runs the normal hook `indented-text-mode-hook'."
+ (set (make-local-variable 'paragraph-start)
+ (concat "[ \t\n\f]\\|" paragraph-start))
+ (set (make-local-variable 'indent-line-function) 'indent-to-left-margin)
+ (run-hooks 'paragraph-indent-text-mode-hook))
+
+(defalias 'indented-text-mode 'text-mode)
+
+;; This can be made a no-op once all modes that use text-mode-hook
+;; are "derived" from 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."
+ (set (make-local-variable '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)
- (text-mode)
- (use-local-map indented-text-mode-map)
- (make-local-variable 'indent-line-function)
- (setq indent-line-function 'indent-relative-maybe)
- (setq mode-name "Indented Text")
- (setq major-mode 'indented-text-mode)
- (run-hooks 'text-mode-hook 'indented-text-mode-hook))
-
+ (let ((enable-mode (not (memq 'turn-on-auto-fill text-mode-hook))))
+ (if enable-mode
+ (add-hook 'text-mode-hook 'turn-on-auto-fill)
+ (remove-hook 'text-mode-hook 'turn-on-auto-fill))
+ (dolist (buffer (buffer-list))
+ (with-current-buffer buffer
+ (if (or (derived-mode-p 'text-mode) text-mode-variant)
+ (auto-fill-mode (if enable-mode 1 0)))))
+ (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."
(delete-horizontal-space)
(setq line-length (current-column))
(if (> (- fill-column lm line-length) 0)
- (indent-line-to
+ (indent-line-to
(+ lm (/ (- fill-column lm line-length) 2))))))
(cond ((null nlines)
(setq nlines 0))
HCoop / bpt / emacs.git / blobdiff