annotate lisp/mule/mule-category.el @ 788:026c5bf9c134

[xemacs-hg @ 2002-03-21 07:29:57 by ben] chartab.c: Fix bugs in implementation and doc strings. config.h.in: Add foo_checking_assert_at_line() macros. Not clear whether these are actually useful, though; I'll take them out if not. symsinit.h, emacs.c: Some improvements to the timeline. Rearrange a bit the init calls. Add call for reinit_vars_of_object_mswindows() and declare in symsinit.h. event-Xt.c, event-gtk.c, event-msw.c, event-stream.c, event-tty.c, events.c, events.h: Introduce new event methods for printing, comparing, and hashing magic events, to avoid event-type-specific stuff that had crept into events.c. (And was crashing, since the channel in MS Windows magic events may be nil.) Implement the methods in event-{tty,gtk,Xt,mswindows}.c. Make wrapping functions event_stream_{compare,hash,format}_magic_event() to check if everything's OK and call the actual callback. Fix events.c to use the new methods. Add a new event-stream-operation EVENT_STREAM_NOTHING -- event stream not actually required to be able to do anything, just be open. (#### This event-stream-operation stuff needs to be rethought.) Fixed describe_event() in event-Xt.c to print its output to a stream, not always to stderr, so it can be used elsewhere. (e.g. in print-event when a magic event is encountered?) lisp.h, lrecord.h: Define new assert_at_line(), for use in asserts inside of inline functions. The assert will report the line and file of the inline function, which is almost certainly not what you want as it's useless. what you want to see is where the pseudo-macro was called from. So, when error-checking is on, we pass in the line and file into the macros, for accurate printout using assert_at_line(). Happens only when error-checking is defined so doesn't slow down non-error-checking builds. Fix XCHAR, XINT, XCHAR_OR_INT, XFOO, and wrap_foo() in this fashion. lstream.c, lstream.h: Add resizing_buffer_to_lisp_string(). objects-gtk.c: Fix typo. objects-msw.c: Implement a smarter way of determining whether a font matches a charset. Formerly we just looked at the "script" element of the font spec, converted it to a code page, and compared it with the code page derived from the charset. Now, as well as doing this, we ask the font for the list of unicode ranges it supports, see what range the charset falls into (#### bogus! need to do this char-by-char), and see if any of the font's supported ranges include the charset's range. also do some caching in Vfont_signature_data of previous inquiries. charset.h, text.c, mule-charset.c: New fun; extracted out of Fmake_char() and declare prototype in charset.h. text.h: introduce assert_by_line() to make REP_BYTES_BY_FIRST_BYTE report the file and line more accurately in an assertion failure. unicode.c: make non-static (used in objects-msw.c), declare in charset.h. mule\mule-category.el: Start implementing a category API compatible with FSF. Not there yet. We need improvements to char-tables. mule\mule-charset.el: Copy translation table code from FSF 21.1 and fix up. Eventually we'll have them in XEmacs. (used in ccl) Not here quite yet, and we need some improvements to char-tables. mule\cyril-util.el, mule\cyrillic.el, mule\devan-util.el, mule\ethio-util.el, mule\korea-util.el, mule\mule-tty-init.el, mule\tibet-util.el, mule\viet-util.el, mule\vietnamese.el: Fix numerous compilation warnings. Fix up code related to translation tables and other types of char-tables. menubar-items.el: Move the frame commands from the View menu to the File menu, to be consistent with how most other programs do things. Move less-used revert/recover items to a submenu. Make "recover" not prompt for a file, but recover the current buffer. TODO.ben-mule-21-5: Create bug list for latest problems.
author ben
date Thu, 21 Mar 2002 07:31:30 +0000
parents 7039e6323819
children c10d0c3f965f
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1 ;;; mule-category.el --- category functions for XEmacs/Mule. -*- coding: iso-2022-7bit; -*-
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2
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3 ;; Copyright (C) 1992,93,94,95 Free Software Foundation, Inc.
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4 ;; Copyright (C) 1995, 1997, 1999 Electrotechnical Laboratory, JAPAN.
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5 ;; Licensed to the Free Software Foundation.
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6 ;; Copyright (C) 1995 Amdahl Corporation.
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7 ;; Copyright (C) 1995 Sun Microsystems.
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8
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9 ;; This file is part of XEmacs.
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10
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11 ;; XEmacs is free software; you can redistribute it and/or modify it
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12 ;; under the terms of the GNU General Public License as published by
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13 ;; the Free Software Foundation; either version 2, or (at your option)
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14 ;; any later version.
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15
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16 ;; XEmacs is distributed in the hope that it will be useful, but
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17 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
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18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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19 ;; General Public License for more details.
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20
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21 ;; You should have received a copy of the GNU General Public License
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22 ;; along with XEmacs; see the file COPYING. If not, write to the
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23 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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24 ;; Boston, MA 02111-1307, USA.
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25
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26 ;;; Commentary:
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27
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28 ;; Functions for working with category tables, which are a particular
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29 ;; type of char table. Some function names / arguments should be
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30 ;; parallel with syntax tables.
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31
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32 ;; Written by Ben Wing <ben@xemacs.org>. The initialization code
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33 ;; at the end of this file comes from Mule.
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34 ;; Some bugfixes by Jareth Hein <jhod@po.iijnet.or.jp>
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35
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36 ;;; Code:
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37
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38 (defvar defined-category-hashtable (make-hash-table :size 50))
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39
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40 (defun define-category (designator doc-string)
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41 "Make a new category whose designator is DESIGNATOR.
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42 DESIGNATOR should be a visible letter of ' ' thru '~'.
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43 STRING is a doc string for the category.
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44 Letters of 'a' thru 'z' are already used or kept for the system."
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45 (check-argument-type 'category-designator-p designator)
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46 (check-argument-type 'stringp doc-string)
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47 (puthash designator doc-string defined-category-hashtable))
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48
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49 (defun undefine-category (designator)
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50 "Undefine DESIGNATOR as a designator for a category."
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51 (check-argument-type 'category-designator-p designator)
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52 (remhash designator defined-category-hashtable))
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53
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54 (defun defined-category-p (designator)
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55 "Return non-nil if DESIGNATOR is a designator for a defined category."
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56 (and (category-designator-p designator)
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57 (gethash designator defined-category-hashtable)))
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58
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59 (defun defined-category-list ()
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60 "Return a list of the currently defined categories.
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61 Categories are given by their designators."
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62 (let (list)
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63 (maphash #'(lambda (key value)
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64 (setq list (cons key list)))
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65 defined-category-hashtable)
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66 (nreverse list)))
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67
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68 (defun undefined-category-designator ()
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69 "Return an undefined category designator, or nil if there are none."
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70 (let ((a 32) found)
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71 (while (and (< a 127) (not found))
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72 (unless (gethash a defined-category-hashtable)
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73 (setq found (make-char 'ascii a)))
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74 (setq a (1+ a)))
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75 found))
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76
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77 (defun category-doc-string (designator)
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78 "Return the doc-string for the category denoted by DESIGNATOR."
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79 (check-argument-type 'defined-category-p designator)
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80 (gethash designator defined-category-hashtable))
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81
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82 (defun modify-category-entry (char-range designator &optional category-table reset)
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83 "Add a category to the categories associated with CHAR-RANGE.
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84 CHAR-RANGE is a single character or a range of characters,
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85 as per `put-char-table'.
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86 The category is given by a designator character.
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87 The changes are made in CATEGORY-TABLE, which defaults to the current
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88 buffer's category table.
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89 If optional fourth argument RESET is non-nil, previous categories associated
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90 with CHAR-RANGE are removed before adding the specified category."
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91 (or category-table (setq category-table (category-table)))
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92 (check-argument-type 'category-table-p category-table)
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93 (check-argument-type 'defined-category-p designator)
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94 (if reset
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95 ;; clear all existing stuff.
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96 (put-char-table char-range nil category-table))
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97 (map-char-table
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98 #'(lambda (key value)
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99 ;; make sure that this range has a bit-vector assigned to it
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100 (if (not (bit-vector-p value))
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101 (setq value (make-bit-vector 95 0))
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102 (setq value (copy-sequence value)))
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103 ;; set the appropriate bit in that vector.
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104 (aset value (- designator 32) 1)
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105 ;; put the vector back, thus assuring we have a unique setting for this range
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106 (put-char-table key value category-table))
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107 category-table char-range))
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108
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109 (defun char-category-list (character &optional category-table)
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110 "Return a list of the categories that CHARACTER is in.
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111 CATEGORY-TABLE defaults to the current buffer's category table.
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112 The categories are given by their designators."
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113 (or category-table (setq category-table (category-table)))
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114 (check-argument-type 'category-table-p category-table)
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115 (let ((vec (get-char-table character category-table)))
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116 (if (null vec) nil
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117 (let ((a 32) list)
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118 (while (< a 127)
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119 (if (= 1 (aref vec (- a 32)))
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120 (setq list (cons (make-char 'ascii a) list)))
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121 (setq a (1+ a)))
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122 (nreverse list)))))
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123
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124 ;; implemented in C, file chartab.c (97/3/14 jhod@po.iijnet.or.jp)
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125 ;(defun char-in-category-p (char category &optional table)
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126 ; "Return non-nil if CHAR is in CATEGORY.
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127 ;TABLE defaults to the current buffer's category table.
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128 ;Categories are specified by their designators."
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129 ; (or table (setq table (category-table)))
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130 ; (check-argument-type 'category-table-p table)
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131 ; (check-argument-type 'category-designator-p category)
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132 ; (let ((vec (get-char-table char table)))
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133 ; (if (null vec) nil
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134 ; (= 1 (aref vec (- category 32))))))
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135
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136 (put 'with-category-table 'lisp-indent-function 1)
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137
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138 (defmacro with-category-table (category-table &rest body)
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139 `(let ((current-category-table (category-table)))
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140 (set-category-table ,category-table)
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141 (unwind-protect
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142 (progn ,@body)
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143 (set-category-table current-category-table))))
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144
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145 (defun describe-category ()
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146 "Describe the category specifications in the category table.
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147 The descriptions are inserted in a buffer, which is then displayed."
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148 (interactive)
434
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149 (with-displaying-help-buffer
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150 (lambda ()
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151 (describe-category-table (category-table) standard-output))))
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152
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153 (defun describe-category-table (table stream)
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154 (let (first-char
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155 last-char
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156 prev-val
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157 (describe-one
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158 (lambda (first last value stream)
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159 (if (and (bit-vector-p value)
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160 (> (reduce '+ value) 0))
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161 (progn
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162 (if (equal first last)
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163 (cond ((vectorp first)
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164 (princ (format "%s, row %d"
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165 (charset-name
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166 (aref first 0))
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167 (aref first 1))
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168 stream))
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169 ((charsetp first)
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170 (princ (charset-name first) stream))
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171 (t (princ first stream)))
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172 (cond ((vectorp first)
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173 (princ (format "%s, rows %d .. %d"
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174 (charset-name
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175 (aref first 0))
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176 (aref first 1)
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177 (aref last 1))
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178 stream))
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179 (t
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180 (princ (format "%s .. %s" first last)
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181 stream))))
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182 (describe-category-code value stream))))))
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183 (map-char-table
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184 (lambda (range value)
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185 (if (and (or
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186 (and (characterp range)
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187 (characterp first-char)
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188 (eq (char-charset range) (char-charset first-char))
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189 (= (char-to-int last-char) (1- (char-to-int range))))
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190 (and (vectorp range)
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191 (vectorp first-char)
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192 (eq (aref range 0) (aref first-char 0))
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193 (= (aref last-char 1) (1- (aref range 1))))
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194 (equal value prev-val)))
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195 (setq last-char range)
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196 (if first-char
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197 (progn
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198 (funcall describe-one first-char last-char prev-val stream)
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199 (setq first-char nil)))
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200 (funcall describe-one range range value stream))
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201 nil)
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202 table)
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203 (if first-char
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204 (funcall describe-one first-char last-char prev-val stream))))
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205
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206 (defun describe-category-code (code stream)
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207 (let ((standard-output (or stream standard-output)))
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208 (princ "\tin categories: ")
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209 (if (not (bit-vector-p code))
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210 (princ "(none)")
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211 (let ((i 0)
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212 already-matched)
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213 (while (< i 95)
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214 (if (= 1 (aref code i))
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215 (progn
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216 (if (not already-matched)
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217 (setq already-matched t)
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218 (princ " "))
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219 (princ (int-to-char (+ 32 i)))))
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220 (setq i (1+ i)))
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221 (if (not already-matched)
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222 (princ "(none)")))
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223 (let ((i 0))
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224 (while (< i 95)
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225 (if (= 1 (aref code i))
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226 (princ (format "\n\t\tmeaning: %s"
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227 (category-doc-string (int-to-char (+ 32 i))))))
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228 (setq i (1+ i)))))
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229 (terpri)))
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230
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231 (defconst predefined-category-list
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232 '((latin-iso8859-1 ?l "Latin-1 through Latin-5 character set")
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233 (latin-iso8859-2 ?l)
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234 (latin-iso8859-3 ?l)
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235 (latin-iso8859-4 ?l)
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236 (latin-iso8859-9 ?l)
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237 (cyrillic-iso8859-5 ?y "Cyrillic character set")
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238 (arabic-iso8859-6 ?b "Arabic character set")
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239 (greek-iso8859-7 ?g "Greek character set")
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240 (hebrew-iso8859-8 ?w "Hebrew character set")
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241 (katakana-jisx0201 ?k "Japanese 1-byte Katakana character set")
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242 (latin-jisx0201 ?r "Japanese 1-byte Roman character set")
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243 (japanese-jisx0208-1978 ?j "Japanese 2-byte character set (old)")
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244 (japanese-jisx0208 ?j "Japanese 2-byte character set")
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245 (japanese-jisx0212 ?j)
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246 (chinese-gb2312 ?c "Chinese GB (China, PRC) 2-byte character set")
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247 (chinese-cns11643-1 ?t "Chinese Taiwan (CNS or Big5) 2-byte character set")
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248 (chinese-cns11643-2 ?t)
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249 (chinese-big5-1 ?t)
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250 (chinese-big5-2 ?t)
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251 (korean-ksc5601 ?h "Hangul (Korean) 2-byte character set")
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252 )
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253 "List of predefined categories.
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254 Each element is a list of a charset, a designator, and maybe a doc string.")
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255
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256 (let (i l)
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257 (define-category ?a "ASCII character set.")
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258 (define-category ?l "Latin-1 through Latin-5 character set")
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259 (setq i 32)
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260 (while (< i 127)
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261 (modify-category-entry i ?a)
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262 (modify-category-entry i ?l)
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263 (setq i (1+ i)))
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264 (setq l predefined-category-list)
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265 (while l
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266 (if (and (nth 2 (car l))
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267 (not (defined-category-p (nth 2 (car l)))))
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268 (define-category (nth 1 (car l)) (nth 2 (car l))))
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269 (modify-category-entry (car (car l)) (nth 1 (car l)))
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270 (setq l (cdr l))))
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271
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272 ;;; Setting word boundary.
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273
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274 (setq word-combining-categories
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275 '((?l . ?l)))
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276
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277 (setq word-separating-categories ; (2-byte character sets)
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278 '((?A . ?K) ; Alpha numeric - Katakana
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279 (?A . ?C) ; Alpha numeric - Chinese
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280 (?H . ?A) ; Hiragana - Alpha numeric
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281 (?H . ?K) ; Hiragana - Katakana
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282 (?H . ?C) ; Hiragana - Chinese
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283 (?K . ?A) ; Katakana - Alpha numeric
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284 (?K . ?C) ; Katakana - Chinese
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285 (?C . ?A) ; Chinese - Alpha numeric
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286 (?C . ?K) ; Chinese - Katakana
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287 ))
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288
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289 ;;; At the present, I know Japanese and Chinese text can
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290 ;;; break line at any point under a restriction of 'kinsoku'.
450
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291 ;;; #### SJT this needs to be set by language environments and probably should
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292 ;;; be buffer-local---strategy for dealing with this: check all $language.el
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293 ;;; files and also mule-base/$language-utils.el files for variables set;
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294 ;;; these should be made buffer local and some kind of a- or p-list of vars
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295 ;;; to be set for a language environment created.
428
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296 (defvar word-across-newline "\\(\\cj\\|\\cc\\|\\ct\\)"
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297 "Regular expression of such characters which can be a word across newline.")
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298
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299 (defvar ascii-char "[\40-\176]")
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300 (defvar ascii-space "[ \t]")
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301 (defvar ascii-symbols "[\40-\57\72-\100\133-\140\173-\176]")
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302 (defvar ascii-numeric "[\60-\71]")
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303 (defvar ascii-English-Upper "[\101-\132]")
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304 (defvar ascii-English-Lower "[\141-\172]")
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305 (defvar ascii-alphanumeric "[\60-\71\101-\132\141-\172]")
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306
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307 (defvar kanji-char "\\cj")
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308 (defvar kanji-space "$B!!(B")
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309 (defvar kanji-symbols "\\cS")
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310 (defvar kanji-numeric "[$B#0(B-$B#9(B]")
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311 (defvar kanji-English-Upper "[$B#A(B-$B#Z(B]")
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312 (defvar kanji-English-Lower "[$B#a(B-$B#z(B]")
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313 (defvar kanji-hiragana "\\cH")
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314 (defvar kanji-katakana "\\cK")
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315 (defvar kanji-Greek-Upper "[$B&!(B-$B&8(B]")
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316 (defvar kanji-Greek-Lower "[$B&A(B-$B&X(B]")
3ecd8885ac67 Import from CVS: tag r21-2-22
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317 (defvar kanji-Russian-Upper "[$B'!(B-$B'A(B]")
3ecd8885ac67 Import from CVS: tag r21-2-22
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318 (defvar kanji-Russian-Lower "[$B'Q(B-$B'q(B]")
3ecd8885ac67 Import from CVS: tag r21-2-22
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319 (defvar kanji-Kanji-1st-Level "[$B0!(B-$BOS(B]")
3ecd8885ac67 Import from CVS: tag r21-2-22
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320 (defvar kanji-Kanji-2nd-Level "[$BP!(B-$Bt$(B]")
3ecd8885ac67 Import from CVS: tag r21-2-22
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321
3ecd8885ac67 Import from CVS: tag r21-2-22
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322 (defvar kanji-kanji-char "\\(\\cH\\|\\cK\\|\\cC\\)")