Mercurial > hg > xemacs-beta
comparison lisp/code-init.el @ 771:943eaba38521
[xemacs-hg @ 2002-03-13 08:51:24 by ben]
The big ben-mule-21-5 check-in!
Various files were added and deleted. See CHANGES-ben-mule.
There are still some test suite failures. No crashes, though.
Many of the failures have to do with problems in the test suite itself
rather than in the actual code. I'll be addressing these in the next
day or so -- none of the test suite failures are at all critical.
Meanwhile I'll be trying to address the biggest issues -- i.e. build
or run failures, which will almost certainly happen on various platforms.
All comments should be sent to ben@xemacs.org -- use a Cc: if necessary
when sending to mailing lists. There will be pre- and post- tags,
something like
pre-ben-mule-21-5-merge-in, and
post-ben-mule-21-5-merge-in.
| author | ben |
|---|---|
| date | Wed, 13 Mar 2002 08:54:06 +0000 |
| parents | |
| children | 2b6fa2618f76 |
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| 770:336a418893b5 | 771:943eaba38521 |
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| 1 ;;; code-init.el --- Handle coding system default values | |
| 2 | |
| 3 ;; Copyright (C) 2001 Ben Wing. | |
| 4 | |
| 5 ;; This file is part of XEmacs. | |
| 6 | |
| 7 ;; XEmacs is free software; you can redistribute it and/or modify it | |
| 8 ;; under the terms of the GNU General Public License as published by | |
| 9 ;; the Free Software Foundation; either version 2, or (at your option) | |
| 10 ;; any later version. | |
| 11 | |
| 12 ;; XEmacs is distributed in the hope that it will be useful, but | |
| 13 ;; WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 15 ;; General Public License for more details. | |
| 16 | |
| 17 ;; You should have received a copy of the GNU General Public License | |
| 18 ;; along with XEmacs; see the file COPYING. If not, write to the | |
| 19 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
| 20 ;; Boston, MA 02111-1307, USA. | |
| 21 | |
| 22 ;;; Commentary: | |
| 23 | |
| 24 ;; Placed in a separate file so it can be loaded after the various | |
| 25 ;; coding systems have been created, because we'll be using them at | |
| 26 ;; load time. | |
| 27 | |
| 28 ;;; Code: | |
| 29 | |
| 30 (defcustom eol-detection-enabled-p (or (featurep 'mule) | |
| 31 (memq system-type '(windows-nt | |
| 32 cygwin32)) | |
| 33 (featurep 'unix-default-eol-detection)) | |
| 34 "True if XEmacs automatically detects the EOL type when reading files. | |
| 35 Normally, this is always the case on Windows or when international (Mule) | |
| 36 support is compiled into this XEmacs. Otherwise, it is currently off by | |
| 37 default, but this may change. Don't set this; nothing will happen. Instead, | |
| 38 use the Options menu or `set-eol-detection'." | |
| 39 :group 'encoding | |
| 40 :type 'boolean | |
| 41 ;; upon initialization, we don't want the whole business of | |
| 42 ;; set-eol-detection to be called. We will init everything appropriately | |
| 43 ;; later in the same file, when reset-language-environment is called. | |
| 44 :initialize #'(lambda (var val) | |
| 45 (setq eol-detection-enabled-p val)) | |
| 46 :set #'(lambda (var val) | |
| 47 (set-eol-detection val) | |
| 48 (setq eol-detection-enabled-p val))) | |
| 49 | |
| 50 (defun set-eol-detection (flag) | |
| 51 "Enable (if FLAG is non-nil) or disable automatic EOL detection of files. | |
| 52 EOL detection is enabled by default on Windows or when international (Mule) | |
| 53 support is compiled into this XEmacs. Otherwise, it is currently off by | |
| 54 default, but this may change. NOTE: You *REALLY* should not turn off EOL | |
| 55 detection on Windows! Your files will have lots of annoying ^M's in them | |
| 56 if you do this." | |
| 57 (dolist (x '(buffer-file-coding-system-for-read | |
| 58 keyboard | |
| 59 default-process-coding-system-read | |
| 60 no-conversion-coding-system-mapping)) | |
| 61 (set-coding-system-variable | |
| 62 x (coding-system-change-eol-conversion (get-coding-system-variable x) | |
| 63 (if flag nil 'lf))))) | |
| 64 | |
| 65 (defun coding-system-current-system-configuration () | |
| 66 (cond ((memq system-type '(windows-nt cygwin32)) | |
| 67 (if (featurep 'mule) 'windows-mule 'windows-no-mule)) | |
| 68 ((featurep 'mule) 'unix-mule) | |
| 69 (eol-detection-enabled-p 'unix-no-mule-eol-detection) | |
| 70 (t 'unix-no-mule-no-eol-detection))) | |
| 71 | |
| 72 (defvar coding-system-variable-default-value-table | |
| 73 '((buffer-file-coding-system-for-read binary raw-text undecided raw-text undecided) | |
| 74 (default-buffer-file-coding-system binary binary iso-2022-8 raw-text-dos mswindows-multibyte-dos) | |
| 75 (file-name binary binary binary raw-text-dos mswindows-multibyte-system-default-dos) | |
| 76 (native binary binary binary raw-text-dos mswindows-multibyte-system-default-dos) | |
| 77 (keyboard binary raw-text undecided raw-text undecided) | |
| 78 ;; the `terminal' coding system is used for output to stderr. such | |
| 79 ;; streams do automatic lf->crlf encoding in the C library, so we need | |
| 80 ;; to not do the same translations ourselves. | |
| 81 (terminal binary binary binary binary mswindows-multibyte-unix) | |
| 82 (default-process-coding-system-read binary raw-text undecided raw-text undecided) | |
| 83 (default-process-coding-system-write binary binary binary raw-text-dos mswindows-multibyte-system-default-dos) | |
| 84 (no-conversion-coding-system-mapping binary raw-text raw-text raw-text mswindows-multibyte) | |
| 85 )) | |
| 86 | |
| 87 (defvar coding-system-default-configuration-list | |
| 88 '(unix-no-mule-no-eol-detection | |
| 89 unix-no-mule-eol-detection | |
| 90 unix-mule | |
| 91 windows-no-mule | |
| 92 windows-mule)) | |
| 93 | |
| 94 (defvar coding-system-default-variable-list | |
| 95 '(buffer-file-coding-system-for-read | |
| 96 default-buffer-file-coding-system | |
| 97 file-name | |
| 98 native | |
| 99 keyboard | |
| 100 terminal | |
| 101 default-process-coding-system-read | |
| 102 default-process-coding-system-write)) | |
| 103 | |
| 104 (defun get-coding-system-variable (var) | |
| 105 "Return the value of a basic coding system variable. | |
| 106 This is intended as a uniform interface onto the coding system settings that | |
| 107 control how encoding detection and conversion works. See | |
| 108 `coding-system-variable-default-value' for a list of the possible values of | |
| 109 VAR." | |
| 110 (case var | |
| 111 (buffer-file-coding-system-for-read buffer-file-coding-system-for-read) | |
| 112 (default-buffer-file-coding-system | |
| 113 (default-value 'buffer-file-coding-system)) | |
| 114 (file-name (coding-system-aliasee 'file-name)) | |
| 115 (native (coding-system-aliasee 'native)) | |
| 116 (keyboard (coding-system-aliasee 'keyboard)) | |
| 117 (terminal (coding-system-aliasee 'terminal)) | |
| 118 (default-process-coding-system-read (car default-process-coding-system)) | |
| 119 (default-process-coding-system-write (cdr default-process-coding-system)) | |
| 120 (t (error 'invalid-constant "Invalid coding system variable" var)))) | |
| 121 | |
| 122 (defun set-coding-system-variable (var value) | |
| 123 "Set a basic coding system variable to VALUE. | |
| 124 This is intended as a uniform interface onto the coding system settings that | |
| 125 control how encoding detection and conversion works. See | |
| 126 `coding-system-variable-default-value' for a list of the possible values of | |
| 127 VAR." | |
| 128 (case var | |
| 129 (buffer-file-coding-system-for-read | |
| 130 (set-buffer-file-coding-system-for-read value)) | |
| 131 (default-buffer-file-coding-system | |
| 132 (set-default-buffer-file-coding-system value)) | |
| 133 (file-name (define-coding-system-alias 'file-name value)) | |
| 134 (native (define-coding-system-alias 'native value)) | |
| 135 (keyboard (set-keyboard-coding-system value)) | |
| 136 (terminal (set-terminal-coding-system value)) | |
| 137 (default-process-coding-system-read | |
| 138 (setq default-process-coding-system | |
| 139 (cons value (cdr default-process-coding-system)))) | |
| 140 (default-process-coding-system-write | |
| 141 (setq default-process-coding-system | |
| 142 (cons (car default-process-coding-system) value))) | |
| 143 (t (error 'invalid-constant "Invalid coding system variable" var)))) | |
| 144 | |
| 145 (defun coding-system-variable-default-value (var &optional config) | |
| 146 "Return the appropriate default value for a coding system variable. | |
| 147 | |
| 148 VAR specifies the variable, and CONFIG the configuration, defaulting | |
| 149 to the current system configuration (as returned by | |
| 150 `coding-system-current-system-configuration'). | |
| 151 | |
| 152 The table of default values looks like this: (see below for abbreviations) | |
| 153 | |
| 154 | |
| 155 Unix Unix+EOL Unix+Mule MSW MSW+Mule | |
| 156 ------------------------------------------------------------------------------ | |
| 157 bfcs-for-read binary raw-text undecided raw-text undecided | |
| 158 default bfcs binary binary iso-2022-8 raw-text-dos MSW-MB-dos | |
| 159 file-name binary binary binary raw-text-dos MSW-MB-SD-dos | |
| 160 native binary binary binary raw-text-dos MSW-MB-SD-dos | |
| 161 keyboard binary raw-text undecided raw-text undecided | |
| 162 terminal binary binary binary binary MSW-MB-unix | |
| 163 process-read binary raw-text undecided raw-text undecided | |
| 164 process-write binary binary binary raw-text-dos MSW-MB-dos | |
| 165 no-conv-cs binary raw-text raw-text raw-text MSW-MB | |
| 166 | |
| 167 | |
| 168 VAR can be one of: (abbreviations in parens) | |
| 169 | |
| 170 `buffer-file-coding-system-for-read' (bfcs-for-read) | |
| 171 | |
| 172 Lisp variable of the same name; the default coding system used when | |
| 173 reading in a file, in the absence of more specific settings. (See | |
| 174 `insert-file-contents' for a description of exactly how a file's | |
| 175 coding system is determined when it's read in.) | |
| 176 | |
| 177 `default-buffer-file-coding-system' (default bfcs) | |
| 178 | |
| 179 Default value of `buffer-file-coding-system', the buffer-local | |
| 180 variable specifying a file's coding system to be used when it is | |
| 181 written out. Set using `set-default-buffer-file-coding-system' (or | |
| 182 the primitive `setq-default'). When a file is read in, | |
| 183 `buffer-file-coding-system' for that file is set from the coding | |
| 184 system used to read the file in; the default value applies to newly | |
| 185 created files. | |
| 186 | |
| 187 `file-name' (file-name) | |
| 188 | |
| 189 The coding system named `file-name'. Changed using | |
| 190 `define-coding-system-alias'. Used internally when passing file | |
| 191 names to or from system API's, unless the particular API specifies | |
| 192 another coding system. | |
| 193 | |
| 194 `native' (native) | |
| 195 | |
| 196 The coding system named `native'. Changed using | |
| 197 `define-coding-system-alias'. Used internally when passing | |
| 198 non-file-name text to or from system API's, unless the particular | |
| 199 API specifies another coding system. | |
| 200 | |
| 201 `keyboard' (keyboard) | |
| 202 | |
| 203 #### fill in | |
| 204 | |
| 205 `terminal' (terminal) | |
| 206 | |
| 207 #### fill in | |
| 208 | |
| 209 `default-process-coding-system-read' (process-read) | |
| 210 | |
| 211 #### fill in | |
| 212 | |
| 213 `default-process-coding-system-write' (process-write) | |
| 214 | |
| 215 #### fill in | |
| 216 | |
| 217 `no-conversion-coding-system-mapping' (no-conv-cs) | |
| 218 | |
| 219 Coding system used when category `no-conversion' is detected. | |
| 220 | |
| 221 | |
| 222 CONFIG is one of: (abbreviations in parens) | |
| 223 | |
| 224 `unix-no-mule-no-eol-detection' (Unix) | |
| 225 | |
| 226 Unix, no Mule support, no automatic EOL detection. (Controlled by | |
| 227 `eol-detection-enabled-p', which is set by the command-line flag | |
| 228 -enable-eol-detection or the configure flag --with-default-eol-detection.) | |
| 229 | |
| 230 `unix-no-mule-eol-detection' (Unix+EOL) | |
| 231 | |
| 232 Unix, no Mule support, automatic EOL detection. | |
| 233 | |
| 234 `unix-mule' (Unix+Mule) | |
| 235 | |
| 236 Unix, Mule support. | |
| 237 | |
| 238 `windows-no-mule' (MSW) | |
| 239 | |
| 240 MS Windows or Cygwin, no Mule support. | |
| 241 | |
| 242 `windows-mule'. (MSW+Mule) | |
| 243 | |
| 244 MS Windows or Cygwin, Mule support. | |
| 245 | |
| 246 | |
| 247 The following coding system abbreviations are also used in the table: | |
| 248 | |
| 249 MSW-MB = mswindows-multibyte | |
| 250 MSW-MB = mswindows-multibyte-system-default | |
| 251 " | |
| 252 (setq config (or config (coding-system-current-system-configuration))) | |
| 253 (let ((defs (cdr (assq var coding-system-variable-default-value-table)))) | |
| 254 (or defs (error 'invalid-constant "Invalid coding system variable" var)) | |
| 255 (let ((pos (position config coding-system-default-configuration-list))) | |
| 256 (or pos (error 'invalid-constant "Invalid coding system configuration" | |
| 257 config)) | |
| 258 (nth pos defs)))) | |
| 259 | |
| 260 (defun reset-coding-system-defaults (&optional config) | |
| 261 "Reset all basic coding system variables are set to their default values. | |
| 262 See `coding-system-variable-default-value'." | |
| 263 (setq config (or config (coding-system-current-system-configuration))) | |
| 264 (mapcar #'(lambda (var) | |
| 265 (set-coding-system-variable | |
| 266 var (coding-system-variable-default-value var config))) | |
| 267 coding-system-default-variable-list)) | |
| 268 | |
| 269 (defun reset-coding-categories-to-default () | |
| 270 "Reset all coding categories (used for automatic detection) to their defaults. | |
| 271 | |
| 272 The order of priorities of coding categories and the coding system | |
| 273 bound to each category are as follows: | |
| 274 | |
| 275 coding category coding system | |
| 276 -------------------------------------------------- | |
| 277 utf-16-little-endian-bom utf-16-little-endian | |
| 278 utf-16-bom utf-16-bom | |
| 279 iso-7 iso-2022-7bit | |
| 280 no-conversion raw-text | |
| 281 utf-8 utf-8 | |
| 282 iso-8-1 iso-8859-1 | |
| 283 iso-8-2 ctext (iso-8859-1 alias) | |
| 284 iso-8-designate ctext (iso-8859-1 alias) | |
| 285 iso-lock-shift iso-2022-lock | |
| 286 shift-jis shift-jis | |
| 287 big5 big5 | |
| 288 utf-16-little-endian utf-16-little-endian | |
| 289 utf-16 utf-16 | |
| 290 ucs-4 ucs-4 | |
| 291 " | |
| 292 ;; #### What a mess! This needs to be overhauled. | |
| 293 | |
| 294 ;; The old table (from FSF synch?) was not what we use (cf mule-coding.el), | |
| 295 ;; and as documented iso-8-designate is inconsistent with iso-2022-8bit-ss2. | |
| 296 ;; The order of priorities of coding categories and the coding system | |
| 297 ;; bound to each category are as follows: | |
| 298 ;; | |
| 299 ;; coding category coding system | |
| 300 ;; -------------------------------------------------- | |
| 301 ;; iso-8-2 iso-8859-1 | |
| 302 ;; iso-8-1 iso-8859-1 | |
| 303 ;; iso-7 iso-2022-7bit | |
| 304 ;; iso-lock-shift iso-2022-lock | |
| 305 ;; iso-8-designate iso-2022-8bit-ss2 | |
| 306 ;; no-conversion raw-text | |
| 307 ;; shift-jis shift_jis | |
| 308 ;; big5 big5 | |
| 309 ;; ucs-4 ---- | |
| 310 ;; utf-8 ---- | |
| 311 (when (featurep 'mule) | |
| 312 (set-coding-category-system 'iso-7 'iso-2022-7) | |
| 313 (set-coding-category-system 'iso-8-1 'iso-8859-1) | |
| 314 (set-coding-category-system 'iso-8-2 'ctext) | |
| 315 (set-coding-category-system 'iso-lock-shift 'iso-2022-lock) | |
| 316 (set-coding-category-system 'iso-8-designate 'ctext) | |
| 317 (if (find-coding-system 'shift-jis) | |
| 318 (set-coding-category-system 'shift-jis 'shift-jis)) | |
| 319 (if (find-coding-system 'big5) | |
| 320 (set-coding-category-system 'big5 'big5)) | |
| 321 ) | |
| 322 (set-coding-category-system | |
| 323 'no-conversion | |
| 324 (coding-system-variable-default-value 'no-conversion-coding-system-mapping)) | |
| 325 (set-coding-category-system 'ucs-4 'ucs-4) | |
| 326 (set-coding-category-system 'utf-8 'utf-8) | |
| 327 (set-coding-category-system 'utf-16-little-endian 'utf-16-little-endian) | |
| 328 (set-coding-category-system 'utf-16 'utf-16) | |
| 329 (set-coding-category-system 'utf-16-little-endian-bom | |
| 330 'utf-16-little-endian-bom) | |
| 331 (set-coding-category-system 'utf-16-bom 'utf-16-bom) | |
| 332 (set-coding-priority-list | |
| 333 (if (featurep 'mule) | |
| 334 '(utf-16-little-endian-bom | |
| 335 utf-16-bom | |
| 336 iso-7 | |
| 337 no-conversion | |
| 338 utf-8 | |
| 339 iso-8-1 | |
| 340 iso-8-2 | |
| 341 iso-8-designate | |
| 342 iso-lock-shift | |
| 343 shift-jis | |
| 344 big5 | |
| 345 utf-16-little-endian | |
| 346 utf-16 | |
| 347 ucs-4) | |
| 348 '(utf-16-little-endian-bom | |
| 349 utf-16-bom | |
| 350 no-conversion | |
| 351 utf-8 | |
| 352 utf-16-little-endian | |
| 353 utf-16 | |
| 354 ucs-4)))) | |
| 355 | |
| 356 (defun reset-language-environment () | |
| 357 "Reset coding system environment of XEmacs to the default status. | |
| 358 All basic coding system variables are set to their default values, as | |
| 359 are the coding categories used for automatic detection and their | |
| 360 priority. | |
| 361 | |
| 362 BE VERY CERTAIN YOU WANT TO DO THIS BEFORE DOING IT! | |
| 363 | |
| 364 For more information, see `reset-coding-system-defaults' and | |
| 365 `reset-coding-categories-to-default'." | |
| 366 (reset-coding-system-defaults) | |
| 367 (reset-coding-categories-to-default)) | |
| 368 | |
| 369 ;; Initialize everything so that the remaining Lisp files can contain | |
| 370 ;; extended characters. (They will be in ISO-7 format) | |
| 371 | |
| 372 ;; !!####!! The Lisp files should all be in UTF-8!!! That way, all | |
| 373 ;; special characters appear as high bits and there's no problem with | |
| 374 ;; the Lisp parser trying to read a Mule file and getting all screwed | |
| 375 ;; up. The only other thing then would be characters; we just need to | |
| 376 ;; modify the Lisp parser to read the stuff directly after a ? as | |
| 377 ;; UTF-8 and return a 30-bit value directly, and modify the character | |
| 378 ;; routines a bit to allow such a beast to exist. MAKE IT A POINT TO | |
| 379 ;; IMPLEMENT THIS AS ONE OF MY FUTURE PROJECTS. --ben | |
| 380 | |
| 381 (reset-language-environment) | |
| 382 | |
| 383 ;;; code-init.el ends here |