comparison 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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208:f427b8ec4379 209:41ff10fd062f
1 ;;; text-mode.el --- text mode, and its idiosyncratic commands.
2
3 ;; Copyright (C) 1985, 1992, 1994, 1997 Free Software Foundation, Inc.
4
5 ;; Maintainer: FSF
6 ;; Keywords: wp, dumped
7
8 ;; This file is part of XEmacs.
9
10 ;; XEmacs is free software; you can redistribute it and/or modify it
11 ;; under the terms of the GNU General Public License as published by
12 ;; the Free Software Foundation; either version 2, or (at your option)
13 ;; any later version.
14
15 ;; XEmacs is distributed in the hope that it will be useful, but
16 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 ;; General Public License for more details.
19
20 ;; You should have received a copy of the GNU General Public License
21 ;; along with XEmacs; see the file COPYING. If not, write to the Free
22 ;; Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
23 ;; 02111-1307, USA.
24
25 ;;; Synched up with: FSF 19.34.
26
27 ;;; Commentary:
28
29 ;; This file is dumped with XEmacs.
30
31 ;; This package provides the fundamental text mode documented in the
32 ;; Emacs user's manual.
33
34 ;;; Code:
35
36 (defvar text-mode-syntax-table nil
37 "Syntax table used while in text mode.")
38
39 (defvar text-mode-abbrev-table nil
40 "Abbrev table used while in text mode.")
41 (define-abbrev-table 'text-mode-abbrev-table ())
42
43 (if text-mode-syntax-table
44 ()
45 (setq text-mode-syntax-table (make-syntax-table))
46 (modify-syntax-entry ?\" ". " text-mode-syntax-table)
47 (modify-syntax-entry ?\\ ". " text-mode-syntax-table)
48 (modify-syntax-entry ?' "w " text-mode-syntax-table))
49
50 (defvar text-mode-map nil
51 "Keymap for Text mode.
52 Many other modes, such as Mail mode, Outline mode and Indented Text mode,
53 inherit all the commands defined in this map.")
54
55 (if text-mode-map
56 ()
57 (setq text-mode-map (make-sparse-keymap))
58 ;; XEmacs change
59 (set-keymap-name text-mode-map 'text-mode-map)
60 (define-key text-mode-map "\e\t" 'ispell-complete-word)
61 (define-key text-mode-map "\t" 'tab-to-tab-stop)
62 (define-key text-mode-map "\es" 'center-line)
63 (define-key text-mode-map "\eS" 'center-paragraph))
64
65
66 ;(defun non-saved-text-mode ()
67 ; "Like text-mode, but delete auto save file when file is saved for real."
68 ; (text-mode)
69 ; (make-local-variable 'delete-auto-save-files)
70 ; (setq delete-auto-save-files t))
71
72 (defun text-mode ()
73 "Major mode for editing text intended for humans to read.
74 Special commands:
75 \\{text-mode-map}
76 Turning on Text mode calls the value of the variable `text-mode-hook',
77 if that value is non-nil."
78 (interactive)
79 (kill-all-local-variables)
80 (use-local-map text-mode-map)
81 (setq mode-name "Text")
82 (setq major-mode 'text-mode)
83 (setq local-abbrev-table text-mode-abbrev-table)
84 (set-syntax-table text-mode-syntax-table)
85 (run-hooks 'text-mode-hook))
86
87 (defvar indented-text-mode-map ()
88 "Keymap for Indented Text mode.
89 All the commands defined in Text mode are inherited unless overridden.")
90
91 (if indented-text-mode-map
92 ()
93 ;; Make different definition for TAB before the one in text-mode-map, but
94 ;; share the rest.
95 ;; XEmacs change
96 (setq indented-text-mode-map (make-sparse-keymap))
97 (set-keymap-name indented-text-mode-map 'indented-text-mode-map)
98 (set-keymap-parents indented-text-mode-map (list text-mode-map))
99 (define-key indented-text-mode-map "\t" 'indent-relative))
100
101 (defun indented-text-mode ()
102 "Major mode for editing text with indented paragraphs.
103 In this mode, paragraphs are delimited only by blank lines.
104 You can thus get the benefit of adaptive filling
105 (see the variable `adaptive-fill-mode').
106 \\{indented-text-mode-map}
107 Turning on `indented-text-mode' calls the value of the variable
108 `text-mode-hook', if that value is non-nil."
109 (interactive)
110 (kill-all-local-variables)
111 (use-local-map text-mode-map)
112 (define-abbrev-table 'text-mode-abbrev-table ())
113 (setq local-abbrev-table text-mode-abbrev-table)
114 (set-syntax-table text-mode-syntax-table)
115 (make-local-variable 'indent-line-function)
116 (setq indent-line-function 'indent-relative-maybe)
117 (make-local-variable 'paragraph-start)
118 (setq paragraph-start (concat "$\\|" page-delimiter))
119 (make-local-variable 'paragraph-separate)
120 (setq paragraph-separate paragraph-start)
121 (use-local-map indented-text-mode-map)
122 (setq mode-name "Indented Text")
123 (setq major-mode 'indented-text-mode)
124 (run-hooks 'text-mode-hook 'indented-text-mode-hook))
125
126 (defun center-paragraph ()
127 "Center each nonblank line in the paragraph at or after point.
128 See `center-line' for more info."
129 (interactive)
130 (save-excursion
131 (forward-paragraph)
132 (or (bolp) (newline 1))
133 (let ((end (point)))
134 (backward-paragraph)
135 (center-region (point) end))))
136
137 (defun center-region (from to)
138 "Center each nonblank line starting in the region.
139 See `center-line' for more info."
140 (interactive "r")
141 (if (> from to)
142 (let ((tem to))
143 (setq to from from tem)))
144 (save-excursion
145 (save-restriction
146 (narrow-to-region from to)
147 (goto-char from)
148 (while (not (eobp))
149 (or (save-excursion (skip-chars-forward " \t") (eolp))
150 (center-line))
151 (forward-line 1)))))
152
153 (defun center-line (&optional nlines)
154 "Center the line point is on, within the width specified by `fill-column'.
155 This means adjusting the indentation so that it equals
156 the distance between the end of the text and `fill-column'.
157 The argument NLINES says how many lines to center."
158 (interactive "P")
159 (if nlines (setq nlines (prefix-numeric-value nlines)))
160 (while (not (eq nlines 0))
161 (save-excursion
162 (let ((lm (current-left-margin))
163 line-length)
164 (beginning-of-line)
165 (delete-horizontal-space)
166 (end-of-line)
167 (delete-horizontal-space)
168 (setq line-length (current-column))
169 (if (> (- fill-column lm line-length) 0)
170 (indent-line-to
171 (+ lm (/ (- fill-column lm line-length) 2))))))
172 (cond ((null nlines)
173 (setq nlines 0))
174 ((> nlines 0)
175 (setq nlines (1- nlines))
176 (forward-line 1))
177 ((< nlines 0)
178 (setq nlines (1+ nlines))
179 (forward-line -1)))))
180
181 ;;; text-mode.el ends here