diff lisp/text-mode.el @ 209:41ff10fd062f r20-4b3

Import from CVS: tag r20-4b3
author cvs
date Mon, 13 Aug 2007 10:04:58 +0200
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children 677f6a0ee643
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lisp/text-mode.el	Mon Aug 13 10:04:58 2007 +0200
@@ -0,0 +1,181 @@
+;;; text-mode.el --- text mode, and its idiosyncratic commands.
+
+;; Copyright (C) 1985, 1992, 1994, 1997 Free Software Foundation, Inc.
+
+;; Maintainer: FSF
+;; Keywords: wp, dumped
+
+;; This file is part of XEmacs.
+
+;; XEmacs 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 2, or (at your option)
+;; any later version.
+
+;; XEmacs is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+;; General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with XEmacs; see the file COPYING.  If not, write to the Free
+;; Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+;; 02111-1307, USA.
+
+;;; Synched up with: FSF 19.34.
+
+;;; Commentary:
+
+;; This file is dumped with XEmacs.
+
+;; This package provides the fundamental text mode documented in the
+;; Emacs user's manual.
+
+;;; 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,
+inherit all the commands defined in this map.")
+
+(if text-mode-map
+    ()
+  (setq text-mode-map (make-sparse-keymap))
+  ;; XEmacs change
+  (set-keymap-name text-mode-map 'text-mode-map)
+  (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))
+
+
+;(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."
+  (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)
+  (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 definition for TAB before the one in text-mode-map, but
+  ;; share the rest.
+  ;; XEmacs change
+  (setq indented-text-mode-map (make-sparse-keymap))
+  (set-keymap-name indented-text-mode-map 'indented-text-mode-map)
+  (set-keymap-parents indented-text-mode-map (list text-mode-map))
+  (define-key indented-text-mode-map "\t" 'indent-relative))
+
+(defun indented-text-mode ()
+  "Major mode for editing text with indented paragraphs.
+In this mode, paragraphs are delimited only by blank lines.
+You can thus get the benefit of adaptive filling
+ (see the variable `adaptive-fill-mode').
+\\{indented-text-mode-map}
+Turning on `indented-text-mode' calls the value of the variable
+`text-mode-hook', if that value is non-nil."
+  (interactive)
+  (kill-all-local-variables)
+  (use-local-map text-mode-map)
+  (define-abbrev-table 'text-mode-abbrev-table ())
+  (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)
+  (make-local-variable 'paragraph-start)
+  (setq paragraph-start (concat "$\\|" page-delimiter))
+  (make-local-variable 'paragraph-separate)
+  (setq paragraph-separate paragraph-start)
+  (use-local-map indented-text-mode-map)
+  (setq mode-name "Indented Text")
+  (setq major-mode 'indented-text-mode)
+  (run-hooks 'text-mode-hook 'indented-text-mode-hook))
+
+(defun center-paragraph ()
+  "Center each nonblank line in the paragraph at or after point.
+See `center-line' for more info."
+  (interactive)
+  (save-excursion
+    (forward-paragraph)
+    (or (bolp) (newline 1))
+    (let ((end (point)))
+      (backward-paragraph)
+      (center-region (point) end))))
+
+(defun center-region (from to)
+  "Center each nonblank line starting in the region.
+See `center-line' for more info."
+  (interactive "r")
+  (if (> from to)
+      (let ((tem to))
+	(setq to from from tem)))
+  (save-excursion
+    (save-restriction
+      (narrow-to-region from to)
+      (goto-char from)
+      (while (not (eobp))
+	(or (save-excursion (skip-chars-forward " \t") (eolp))
+	    (center-line))
+	(forward-line 1)))))
+
+(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'.
+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