1;;; text-mode.el --- text mode, and its idiosyncratic commands. 2 3;; Copyright (C) 1985, 1992, 1994 Free Software Foundation, Inc. 4 5;; Maintainer: FSF 6 7;; This file is part of GNU Emacs. 8 9;; GNU Emacs is free software; you can redistribute it and/or modify 10;; it under the terms of the GNU General Public License as published by 11;; the Free Software Foundation; either version 2, or (at your option) 12;; any later version. 13 14;; GNU Emacs is distributed in the hope that it will be useful, 15;; but WITHOUT ANY WARRANTY; without even the implied warranty of 16;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17;; GNU General Public License for more details. 18 19;; You should have received a copy of the GNU General Public License 20;; along with GNU Emacs; see the file COPYING. If not, write to 21;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. 22 23 24;;; Commentary: 25 26;; This package provides the fundamental text mode documented in the 27;; Emacs user's manual. 28 29;;; Code: 30 31(defvar text-mode-syntax-table nil 32 "Syntax table used while in text mode.") 33 34(defvar text-mode-abbrev-table nil 35 "Abbrev table used while in text mode.") 36(define-abbrev-table 'text-mode-abbrev-table ()) 37 38(if text-mode-syntax-table 39 () 40 (setq text-mode-syntax-table (make-syntax-table)) 41 (modify-syntax-entry ?\" ". " text-mode-syntax-table) 42 (modify-syntax-entry ?\\ ". " text-mode-syntax-table) 43 (modify-syntax-entry ?' "w " text-mode-syntax-table)) 44 45(defvar text-mode-map nil 46 "Keymap for Text mode. 47Many other modes, such as Mail mode, Outline mode and Indented Text mode, 48inherit all the commands defined in this map.") 49 50(if text-mode-map 51 () 52 (setq text-mode-map (make-sparse-keymap)) 53 (define-key text-mode-map "\e\t" 'ispell-complete-word) 54 (define-key text-mode-map "\t" 'tab-to-tab-stop) 55 (define-key text-mode-map "\es" 'center-line) 56 (define-key text-mode-map "\eS" 'center-paragraph)) 57 58 59;(defun non-saved-text-mode () 60; "Like text-mode, but delete auto save file when file is saved for real." 61; (text-mode) 62; (make-local-variable 'delete-auto-save-files) 63; (setq delete-auto-save-files t)) 64 65(defun text-mode () 66 "Major mode for editing text intended for humans to read. 67Special commands: 68\\{text-mode-map} 69Turning on Text mode calls the value of the variable `text-mode-hook', 70if that value is non-nil." 71 (interactive) 72 (kill-all-local-variables) 73 (use-local-map text-mode-map) 74 (setq mode-name "Text") 75 (setq major-mode 'text-mode) 76 (setq local-abbrev-table text-mode-abbrev-table) 77 (set-syntax-table text-mode-syntax-table) 78 (run-hooks 'text-mode-hook)) 79 80(defvar indented-text-mode-map () 81 "Keymap for Indented Text mode. 82All the commands defined in Text mode are inherited unless overridden.") 83 84(if indented-text-mode-map 85 () 86 ;; Make different definition for TAB before the one in text-mode-map, but 87 ;; share the rest. 88 (let ((newmap (make-sparse-keymap))) 89 (define-key newmap "\t" 'indent-relative) 90 (setq indented-text-mode-map (nconc newmap text-mode-map)))) 91 92(defun indented-text-mode () 93 "Major mode for editing text with indented paragraphs. 94In this mode, paragraphs are delimited only by blank lines. 95You can thus get the benefit of adaptive filling 96 (see the variable `adaptive-fill-mode'). 97\\{indented-text-mode-map} 98Turning on `indented-text-mode' calls the value of the variable 99`text-mode-hook', if that value is non-nil." 100 (interactive) 101 (kill-all-local-variables) 102 (use-local-map text-mode-map) 103 (define-abbrev-table 'text-mode-abbrev-table ()) 104 (setq local-abbrev-table text-mode-abbrev-table) 105 (set-syntax-table text-mode-syntax-table) 106 (make-local-variable 'indent-line-function) 107 (setq indent-line-function 'indent-relative-maybe) 108 (make-local-variable 'paragraph-start) 109 (setq paragraph-start (concat "^$\\|" page-delimiter)) 110 (make-local-variable 'paragraph-separate) 111 (setq paragraph-separate paragraph-start) 112 (use-local-map indented-text-mode-map) 113 (setq mode-name "Indented Text") 114 (setq major-mode 'indented-text-mode) 115 (run-hooks 'text-mode-hook 'indented-text-mode-hook)) 116 117(defun center-paragraph () 118 "Center each nonblank line in the paragraph at or after point. 119See `center-line' for more info." 120 (interactive) 121 (save-excursion 122 (forward-paragraph) 123 (or (bolp) (newline 1)) 124 (let ((end (point))) 125 (backward-paragraph) 126 (center-region (point) end)))) 127 128(defun center-region (from to) 129 "Center each nonblank line starting in the region. 130See `center-line' for more info." 131 (interactive "r") 132 (if (> from to) 133 (let ((tem to)) 134 (setq to from from tem))) 135 (save-excursion 136 (save-restriction 137 (narrow-to-region from to) 138 (goto-char from) 139 (while (not (eobp)) 140 (or (save-excursion (skip-chars-forward " \t") (eolp)) 141 (center-line)) 142 (forward-line 1))))) 143 144(defun center-line () 145 "Center the line point is on, within the width specified by `fill-column'. 146This means adjusting the indentation so that it equals 147the distance between the end of the text and `fill-column'." 148 (interactive) 149 (save-excursion 150 (let (line-length) 151 (beginning-of-line) 152 (delete-horizontal-space) 153 (end-of-line) 154 (delete-horizontal-space) 155 (setq line-length (current-column)) 156 (beginning-of-line) 157 (indent-to 158 (+ left-margin 159 (/ (- fill-column left-margin line-length) 2)))))) 160 161;;; text-mode.el ends here 162