| 1 | ;;; whitespace.el --- minor mode to visualize TAB, (HARD) SPACE, NEWLINE |
| 2 | |
| 3 | ;; Copyright (C) 2000-2014 Free Software Foundation, Inc. |
| 4 | |
| 5 | ;; Author: Vinicius Jose Latorre <viniciusjl@ig.com.br> |
| 6 | ;; Maintainer: Vinicius Jose Latorre <viniciusjl@ig.com.br> |
| 7 | ;; Keywords: data, wp |
| 8 | ;; Version: 13.2.2 |
| 9 | ;; X-URL: http://www.emacswiki.org/cgi-bin/wiki/ViniciusJoseLatorre |
| 10 | |
| 11 | ;; This file is part of GNU Emacs. |
| 12 | |
| 13 | ;; GNU Emacs is free software: you can redistribute it and/or modify |
| 14 | ;; it under the terms of the GNU General Public License as published by |
| 15 | ;; the Free Software Foundation, either version 3 of the License, or |
| 16 | ;; (at your option) any later version. |
| 17 | |
| 18 | ;; GNU Emacs is distributed in the hope that it will be useful, |
| 19 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 20 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 21 | ;; GNU General Public License for more details. |
| 22 | |
| 23 | ;; You should have received a copy of the GNU General Public License |
| 24 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
| 25 | |
| 26 | ;;; Commentary: |
| 27 | |
| 28 | ;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
| 29 | ;; |
| 30 | ;; Introduction |
| 31 | ;; ------------ |
| 32 | ;; |
| 33 | ;; This package is a minor mode to visualize blanks (TAB, (HARD) SPACE |
| 34 | ;; and NEWLINE). |
| 35 | ;; |
| 36 | ;; whitespace uses two ways to visualize blanks: faces and display |
| 37 | ;; table. |
| 38 | ;; |
| 39 | ;; * Faces are used to highlight the background with a color. |
| 40 | ;; whitespace uses font-lock to highlight blank characters. |
| 41 | ;; |
| 42 | ;; * Display table changes the way a character is displayed, that is, |
| 43 | ;; it provides a visual mark for characters, for example, at the end |
| 44 | ;; of line (?\xB6), at SPACEs (?\xB7) and at TABs (?\xBB). |
| 45 | ;; |
| 46 | ;; The `whitespace-style' variable selects which way blanks are |
| 47 | ;; visualized. |
| 48 | ;; |
| 49 | ;; Note that when whitespace is turned on, whitespace saves the |
| 50 | ;; font-lock state, that is, if font-lock is on or off. And |
| 51 | ;; whitespace restores the font-lock state when it is turned off. So, |
| 52 | ;; if whitespace is turned on and font-lock is off, whitespace also |
| 53 | ;; turns on the font-lock to highlight blanks, but the font-lock will |
| 54 | ;; be turned off when whitespace is turned off. Thus, turn on |
| 55 | ;; font-lock before whitespace is on, if you want that font-lock |
| 56 | ;; continues on after whitespace is turned off. |
| 57 | ;; |
| 58 | ;; When whitespace is on, it takes care of highlighting some special |
| 59 | ;; characters over the default mechanism of `nobreak-char-display' |
| 60 | ;; (which see) and `show-trailing-whitespace' (which see). |
| 61 | ;; |
| 62 | ;; The trailing spaces are not highlighted while point is at end of line. |
| 63 | ;; Also the spaces at beginning of buffer are not highlighted while point is at |
| 64 | ;; beginning of buffer; and the spaces at end of buffer are not highlighted |
| 65 | ;; while point is at end of buffer. |
| 66 | ;; |
| 67 | ;; There are two ways of using whitespace: local and global. |
| 68 | ;; |
| 69 | ;; * Local whitespace affects only the current buffer. |
| 70 | ;; |
| 71 | ;; * Global whitespace affects all current and future buffers. That |
| 72 | ;; is, if you turn on global whitespace and then create a new |
| 73 | ;; buffer, the new buffer will also have whitespace on. The |
| 74 | ;; `whitespace-global-modes' variable controls which major-mode will |
| 75 | ;; be automagically turned on. |
| 76 | ;; |
| 77 | ;; You can mix the local and global usage without any conflict. But |
| 78 | ;; local whitespace has priority over global whitespace. Whitespace |
| 79 | ;; mode is active in a buffer if you have enabled it in that buffer or |
| 80 | ;; if you have enabled it globally. |
| 81 | ;; |
| 82 | ;; When global and local whitespace are on: |
| 83 | ;; |
| 84 | ;; * if local whitespace is turned off, whitespace is turned off for |
| 85 | ;; the current buffer only. |
| 86 | ;; |
| 87 | ;; * if global whitespace is turned off, whitespace continues on only |
| 88 | ;; in the buffers in which local whitespace is on. |
| 89 | ;; |
| 90 | ;; To use whitespace, insert in your ~/.emacs: |
| 91 | ;; |
| 92 | ;; (require 'whitespace) |
| 93 | ;; |
| 94 | ;; Or autoload at least one of the commands`whitespace-mode', |
| 95 | ;; `whitespace-toggle-options', `global-whitespace-mode' or |
| 96 | ;; `global-whitespace-toggle-options'. For example: |
| 97 | ;; |
| 98 | ;; (autoload 'whitespace-mode "whitespace" |
| 99 | ;; "Toggle whitespace visualization." t) |
| 100 | ;; (autoload 'whitespace-toggle-options "whitespace" |
| 101 | ;; "Toggle local `whitespace-mode' options." t) |
| 102 | ;; |
| 103 | ;; whitespace was inspired by: |
| 104 | ;; |
| 105 | ;; whitespace.el Rajesh Vaidheeswarran <rv@gnu.org> |
| 106 | ;; Warn about and clean bogus whitespaces in the file |
| 107 | ;; (inspired the idea to warn and clean some blanks) |
| 108 | ;; This was the original `whitespace.el' which was replaced by |
| 109 | ;; `blank-mode.el'. And later `blank-mode.el' was renamed to |
| 110 | ;; `whitespace.el'. |
| 111 | ;; |
| 112 | ;; show-whitespace-mode.el Aurelien Tisne <aurelien.tisne@free.fr> |
| 113 | ;; Simple mode to highlight whitespaces |
| 114 | ;; (inspired the idea to use font-lock) |
| 115 | ;; |
| 116 | ;; whitespace-mode.el Lawrence Mitchell <wence@gmx.li> |
| 117 | ;; Major mode for editing Whitespace |
| 118 | ;; (inspired the idea to use display table) |
| 119 | ;; |
| 120 | ;; visws.el Miles Bader <miles@gnu.org> |
| 121 | ;; Make whitespace visible |
| 122 | ;; (handle display table, his code was modified, but the main |
| 123 | ;; idea was kept) |
| 124 | ;; |
| 125 | ;; |
| 126 | ;; Using whitespace |
| 127 | ;; ---------------- |
| 128 | ;; |
| 129 | ;; There is no problem if you mix local and global minor mode usage. |
| 130 | ;; |
| 131 | ;; * LOCAL whitespace: |
| 132 | ;; + To toggle whitespace options locally, type: |
| 133 | ;; |
| 134 | ;; M-x whitespace-toggle-options RET |
| 135 | ;; |
| 136 | ;; + To activate whitespace locally, type: |
| 137 | ;; |
| 138 | ;; C-u 1 M-x whitespace-mode RET |
| 139 | ;; |
| 140 | ;; + To deactivate whitespace locally, type: |
| 141 | ;; |
| 142 | ;; C-u 0 M-x whitespace-mode RET |
| 143 | ;; |
| 144 | ;; + To toggle whitespace locally, type: |
| 145 | ;; |
| 146 | ;; M-x whitespace-mode RET |
| 147 | ;; |
| 148 | ;; * GLOBAL whitespace: |
| 149 | ;; + To toggle whitespace options globally, type: |
| 150 | ;; |
| 151 | ;; M-x global-whitespace-toggle-options RET |
| 152 | ;; |
| 153 | ;; + To activate whitespace globally, type: |
| 154 | ;; |
| 155 | ;; C-u 1 M-x global-whitespace-mode RET |
| 156 | ;; |
| 157 | ;; + To deactivate whitespace globally, type: |
| 158 | ;; |
| 159 | ;; C-u 0 M-x global-whitespace-mode RET |
| 160 | ;; |
| 161 | ;; + To toggle whitespace globally, type: |
| 162 | ;; |
| 163 | ;; M-x global-whitespace-mode RET |
| 164 | ;; |
| 165 | ;; There are also the following useful commands: |
| 166 | ;; |
| 167 | ;; `whitespace-newline-mode' |
| 168 | ;; Toggle NEWLINE minor mode visualization ("nl" on mode line). |
| 169 | ;; |
| 170 | ;; `global-whitespace-newline-mode' |
| 171 | ;; Toggle NEWLINE global minor mode visualization ("NL" on mode line). |
| 172 | ;; |
| 173 | ;; `whitespace-report' |
| 174 | ;; Report some blank problems in buffer. |
| 175 | ;; |
| 176 | ;; `whitespace-report-region' |
| 177 | ;; Report some blank problems in a region. |
| 178 | ;; |
| 179 | ;; `whitespace-cleanup' |
| 180 | ;; Cleanup some blank problems in all buffer or at region. |
| 181 | ;; |
| 182 | ;; `whitespace-cleanup-region' |
| 183 | ;; Cleanup some blank problems at region. |
| 184 | ;; |
| 185 | ;; The problems, which are cleaned up, are: |
| 186 | ;; |
| 187 | ;; 1. empty lines at beginning of buffer. |
| 188 | ;; 2. empty lines at end of buffer. |
| 189 | ;; If `whitespace-style' includes the value `empty', remove all |
| 190 | ;; empty lines at beginning and/or end of buffer. |
| 191 | ;; |
| 192 | ;; 3. 8 or more SPACEs at beginning of line. |
| 193 | ;; If `whitespace-style' includes the value `indentation': |
| 194 | ;; replace 8 or more SPACEs at beginning of line by TABs, if |
| 195 | ;; `indent-tabs-mode' is non-nil; otherwise, replace TABs by |
| 196 | ;; SPACEs. |
| 197 | ;; If `whitespace-style' includes the value `indentation::tab', |
| 198 | ;; replace 8 or more SPACEs at beginning of line by TABs. |
| 199 | ;; If `whitespace-style' includes the value `indentation::space', |
| 200 | ;; replace TABs by SPACEs. |
| 201 | ;; |
| 202 | ;; 4. SPACEs before TAB. |
| 203 | ;; If `whitespace-style' includes the value `space-before-tab': |
| 204 | ;; replace SPACEs by TABs, if `indent-tabs-mode' is non-nil; |
| 205 | ;; otherwise, replace TABs by SPACEs. |
| 206 | ;; If `whitespace-style' includes the value |
| 207 | ;; `space-before-tab::tab', replace SPACEs by TABs. |
| 208 | ;; If `whitespace-style' includes the value |
| 209 | ;; `space-before-tab::space', replace TABs by SPACEs. |
| 210 | ;; |
| 211 | ;; 5. SPACEs or TABs at end of line. |
| 212 | ;; If `whitespace-style' includes the value `trailing', remove all |
| 213 | ;; SPACEs or TABs at end of line. |
| 214 | ;; |
| 215 | ;; 6. 8 or more SPACEs after TAB. |
| 216 | ;; If `whitespace-style' includes the value `space-after-tab': |
| 217 | ;; replace SPACEs by TABs, if `indent-tabs-mode' is non-nil; |
| 218 | ;; otherwise, replace TABs by SPACEs. |
| 219 | ;; If `whitespace-style' includes the value `space-after-tab::tab', |
| 220 | ;; replace SPACEs by TABs. |
| 221 | ;; If `whitespace-style' includes the value |
| 222 | ;; `space-after-tab::space', replace TABs by SPACEs. |
| 223 | ;; |
| 224 | ;; |
| 225 | ;; Hooks |
| 226 | ;; ----- |
| 227 | ;; |
| 228 | ;; whitespace has the following hook variables: |
| 229 | ;; |
| 230 | ;; `whitespace-mode-hook' |
| 231 | ;; It is evaluated always when whitespace is turned on locally. |
| 232 | ;; |
| 233 | ;; `global-whitespace-mode-hook' |
| 234 | ;; It is evaluated always when whitespace is turned on globally. |
| 235 | ;; |
| 236 | ;; `whitespace-load-hook' |
| 237 | ;; It is evaluated after whitespace package is loaded. |
| 238 | ;; |
| 239 | ;; |
| 240 | ;; Options |
| 241 | ;; ------- |
| 242 | ;; |
| 243 | ;; Below it's shown a brief description of whitespace options, please, |
| 244 | ;; see the options declaration in the code for a long documentation. |
| 245 | ;; |
| 246 | ;; `whitespace-style' Specify which kind of blank is |
| 247 | ;; visualized. |
| 248 | ;; |
| 249 | ;; `whitespace-space' Face used to visualize SPACE. |
| 250 | ;; |
| 251 | ;; `whitespace-hspace' Face used to visualize HARD SPACE. |
| 252 | ;; |
| 253 | ;; `whitespace-tab' Face used to visualize TAB. |
| 254 | ;; |
| 255 | ;; `whitespace-newline' Face used to visualize NEWLINE char |
| 256 | ;; mapping. |
| 257 | ;; |
| 258 | ;; `whitespace-trailing' Face used to visualize trailing |
| 259 | ;; blanks. |
| 260 | ;; |
| 261 | ;; `whitespace-line' Face used to visualize "long" lines. |
| 262 | ;; |
| 263 | ;; `whitespace-space-before-tab' Face used to visualize SPACEs |
| 264 | ;; before TAB. |
| 265 | ;; |
| 266 | ;; `whitespace-indentation' Face used to visualize 8 or more |
| 267 | ;; SPACEs at beginning of line. |
| 268 | ;; |
| 269 | ;; `whitespace-empty' Face used to visualize empty lines at |
| 270 | ;; beginning and/or end of buffer. |
| 271 | ;; |
| 272 | ;; `whitespace-space-after-tab' Face used to visualize 8 or more |
| 273 | ;; SPACEs after TAB. |
| 274 | ;; |
| 275 | ;; `whitespace-space-regexp' Specify SPACE characters regexp. |
| 276 | ;; |
| 277 | ;; `whitespace-hspace-regexp' Specify HARD SPACE characters regexp. |
| 278 | ;; |
| 279 | ;; `whitespace-tab-regexp' Specify TAB characters regexp. |
| 280 | ;; |
| 281 | ;; `whitespace-trailing-regexp' Specify trailing characters regexp. |
| 282 | ;; |
| 283 | ;; `whitespace-space-before-tab-regexp' Specify SPACEs before TAB |
| 284 | ;; regexp. |
| 285 | ;; |
| 286 | ;; `whitespace-indentation-regexp' Specify regexp for 8 or more |
| 287 | ;; SPACEs at beginning of line. |
| 288 | ;; |
| 289 | ;; `whitespace-empty-at-bob-regexp' Specify regexp for empty lines |
| 290 | ;; at beginning of buffer. |
| 291 | ;; |
| 292 | ;; `whitespace-empty-at-eob-regexp' Specify regexp for empty lines |
| 293 | ;; at end of buffer. |
| 294 | ;; |
| 295 | ;; `whitespace-space-after-tab-regexp' Specify regexp for 8 or more |
| 296 | ;; SPACEs after TAB. |
| 297 | ;; |
| 298 | ;; `whitespace-line-column' Specify column beyond which the line |
| 299 | ;; is highlighted. |
| 300 | ;; |
| 301 | ;; `whitespace-display-mappings' Specify an alist of mappings |
| 302 | ;; for displaying characters. |
| 303 | ;; |
| 304 | ;; `whitespace-global-modes' Modes for which global |
| 305 | ;; `whitespace-mode' is automagically |
| 306 | ;; turned on. |
| 307 | ;; |
| 308 | ;; `whitespace-action' Specify which action is taken when a |
| 309 | ;; buffer is visited or written. |
| 310 | ;; |
| 311 | ;; |
| 312 | ;; Acknowledgments |
| 313 | ;; --------------- |
| 314 | ;; |
| 315 | ;; Thanks to felix (EmacsWiki) for keeping highlight when switching between |
| 316 | ;; major modes on a file. |
| 317 | ;; |
| 318 | ;; Thanks to David Reitter <david.reitter@gmail.com> for suggesting a |
| 319 | ;; `whitespace-newline' initialization with low contrast relative to |
| 320 | ;; the background color. |
| 321 | ;; |
| 322 | ;; Thanks to Stephen Deasey <sdeasey@gmail.com> for the |
| 323 | ;; `indent-tabs-mode' usage suggestion. |
| 324 | ;; |
| 325 | ;; Thanks to Eric Cooper <ecc@cmu.edu> for the suggestion to have hook |
| 326 | ;; actions when buffer is written as the original whitespace package |
| 327 | ;; had. |
| 328 | ;; |
| 329 | ;; Thanks to nschum (EmacsWiki) for the idea about highlight "long" |
| 330 | ;; lines tail. See EightyColumnRule (EmacsWiki). |
| 331 | ;; |
| 332 | ;; Thanks to Juri Linkov <juri@jurta.org> for suggesting: |
| 333 | ;; * `define-minor-mode'. |
| 334 | ;; * `global-whitespace-*' name for global commands. |
| 335 | ;; |
| 336 | ;; Thanks to Robert J. Chassell <bob@gnu.org> for doc fix and testing. |
| 337 | ;; |
| 338 | ;; Thanks to Drew Adams <drew.adams@oracle.com> for toggle commands |
| 339 | ;; suggestion. |
| 340 | ;; |
| 341 | ;; Thanks to Antti Kaihola <antti.kaihola@linux-aktivaattori.org> for |
| 342 | ;; helping to fix `find-file-hooks' reference. |
| 343 | ;; |
| 344 | ;; Thanks to Andreas Roehler <andreas.roehler@easy-emacs.de> for |
| 345 | ;; indicating defface byte-compilation warnings. |
| 346 | ;; |
| 347 | ;; Thanks to Tim O'Callaghan (EmacsWiki) for the idea about highlight |
| 348 | ;; "long" lines. See EightyColumnRule (EmacsWiki). |
| 349 | ;; |
| 350 | ;; Thanks to Yanghui Bian <yanghuibian@gmail.com> for indicating a new |
| 351 | ;; NEWLINE character mapping. |
| 352 | ;; |
| 353 | ;; Thanks to Pete Forman <pete.forman@westgeo.com> for indicating |
| 354 | ;; whitespace-mode.el on XEmacs. |
| 355 | ;; |
| 356 | ;; Thanks to Miles Bader <miles@gnu.org> for handling display table via |
| 357 | ;; visws.el (his code was modified, but the main idea was kept). |
| 358 | ;; |
| 359 | ;; Thanks to: |
| 360 | ;; Rajesh Vaidheeswarran <rv@gnu.org> (original) whitespace.el |
| 361 | ;; Aurelien Tisne <aurelien.tisne@free.fr> show-whitespace-mode.el |
| 362 | ;; Lawrence Mitchell <wence@gmx.li> whitespace-mode.el |
| 363 | ;; Miles Bader <miles@gnu.org> visws.el |
| 364 | ;; And to all people who contributed with them. |
| 365 | ;; |
| 366 | ;; |
| 367 | ;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
| 368 | |
| 369 | ;;; code: |
| 370 | |
| 371 | \f |
| 372 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
| 373 | ;;;; User Variables: |
| 374 | |
| 375 | |
| 376 | ;;; Interface to the command system |
| 377 | |
| 378 | |
| 379 | (defgroup whitespace nil |
| 380 | "Visualize blanks (TAB, (HARD) SPACE and NEWLINE)." |
| 381 | :link '(emacs-library-link :tag "Source Lisp File" "whitespace.el") |
| 382 | :version "23.1" |
| 383 | :group 'convenience) |
| 384 | |
| 385 | |
| 386 | (defcustom whitespace-style |
| 387 | '(face |
| 388 | tabs spaces trailing lines space-before-tab newline |
| 389 | indentation empty space-after-tab |
| 390 | space-mark tab-mark newline-mark) |
| 391 | "Specify which kind of blank is visualized. |
| 392 | |
| 393 | It's a list containing some or all of the following values: |
| 394 | |
| 395 | face enable all visualization via faces (see below). |
| 396 | |
| 397 | trailing trailing blanks are visualized via faces. |
| 398 | It has effect only if `face' (see above) |
| 399 | is present in `whitespace-style'. |
| 400 | |
| 401 | tabs TABs are visualized via faces. |
| 402 | It has effect only if `face' (see above) |
| 403 | is present in `whitespace-style'. |
| 404 | |
| 405 | spaces SPACEs and HARD SPACEs are visualized via |
| 406 | faces. |
| 407 | It has effect only if `face' (see above) |
| 408 | is present in `whitespace-style'. |
| 409 | |
| 410 | lines lines which have columns beyond |
| 411 | `whitespace-line-column' are highlighted via |
| 412 | faces. |
| 413 | Whole line is highlighted. |
| 414 | It has precedence over `lines-tail' (see |
| 415 | below). |
| 416 | It has effect only if `face' (see above) |
| 417 | is present in `whitespace-style'. |
| 418 | |
| 419 | lines-tail lines which have columns beyond |
| 420 | `whitespace-line-column' are highlighted via |
| 421 | faces. |
| 422 | But only the part of line which goes |
| 423 | beyond `whitespace-line-column' column. |
| 424 | It has effect only if `lines' (see above) |
| 425 | is not present in `whitespace-style' |
| 426 | and if `face' (see above) is present in |
| 427 | `whitespace-style'. |
| 428 | |
| 429 | newline NEWLINEs are visualized via faces. |
| 430 | It has effect only if `face' (see above) |
| 431 | is present in `whitespace-style'. |
| 432 | |
| 433 | empty empty lines at beginning and/or end of buffer |
| 434 | are visualized via faces. |
| 435 | It has effect only if `face' (see above) |
| 436 | is present in `whitespace-style'. |
| 437 | |
| 438 | indentation::tab 8 or more SPACEs at beginning of line are |
| 439 | visualized via faces. |
| 440 | It has effect only if `face' (see above) |
| 441 | is present in `whitespace-style'. |
| 442 | |
| 443 | indentation::space TABs at beginning of line are visualized via |
| 444 | faces. |
| 445 | It has effect only if `face' (see above) |
| 446 | is present in `whitespace-style'. |
| 447 | |
| 448 | indentation 8 or more SPACEs at beginning of line are |
| 449 | visualized, if `indent-tabs-mode' (which see) |
| 450 | is non-nil; otherwise, TABs at beginning of |
| 451 | line are visualized via faces. |
| 452 | It has effect only if `face' (see above) |
| 453 | is present in `whitespace-style'. |
| 454 | |
| 455 | space-after-tab::tab 8 or more SPACEs after a TAB are |
| 456 | visualized via faces. |
| 457 | It has effect only if `face' (see above) |
| 458 | is present in `whitespace-style'. |
| 459 | |
| 460 | space-after-tab::space TABs are visualized when 8 or more |
| 461 | SPACEs occur after a TAB, via faces. |
| 462 | It has effect only if `face' (see above) |
| 463 | is present in `whitespace-style'. |
| 464 | |
| 465 | space-after-tab 8 or more SPACEs after a TAB are |
| 466 | visualized, if `indent-tabs-mode' |
| 467 | (which see) is non-nil; otherwise, |
| 468 | the TABs are visualized via faces. |
| 469 | It has effect only if `face' (see above) |
| 470 | is present in `whitespace-style'. |
| 471 | |
| 472 | space-before-tab::tab SPACEs before TAB are visualized via |
| 473 | faces. |
| 474 | It has effect only if `face' (see above) |
| 475 | is present in `whitespace-style'. |
| 476 | |
| 477 | space-before-tab::space TABs are visualized when SPACEs occur |
| 478 | before TAB, via faces. |
| 479 | It has effect only if `face' (see above) |
| 480 | is present in `whitespace-style'. |
| 481 | |
| 482 | space-before-tab SPACEs before TAB are visualized, if |
| 483 | `indent-tabs-mode' (which see) is |
| 484 | non-nil; otherwise, the TABs are |
| 485 | visualized via faces. |
| 486 | It has effect only if `face' (see above) |
| 487 | is present in `whitespace-style'. |
| 488 | |
| 489 | space-mark SPACEs and HARD SPACEs are visualized via |
| 490 | display table. |
| 491 | |
| 492 | tab-mark TABs are visualized via display table. |
| 493 | |
| 494 | newline-mark NEWLINEs are visualized via display table. |
| 495 | |
| 496 | Any other value is ignored. |
| 497 | |
| 498 | If nil, don't visualize TABs, (HARD) SPACEs and NEWLINEs via faces and |
| 499 | via display table. |
| 500 | |
| 501 | There is an evaluation order for some values, if they are |
| 502 | included in `whitespace-style' list. For example, if |
| 503 | indentation, indentation::tab and/or indentation::space are |
| 504 | included in `whitespace-style' list. The evaluation order for |
| 505 | these values is: |
| 506 | |
| 507 | * For indentation: |
| 508 | 1. indentation |
| 509 | 2. indentation::tab |
| 510 | 3. indentation::space |
| 511 | |
| 512 | * For SPACEs after TABs: |
| 513 | 1. space-after-tab |
| 514 | 2. space-after-tab::tab |
| 515 | 3. space-after-tab::space |
| 516 | |
| 517 | * For SPACEs before TABs: |
| 518 | 1. space-before-tab |
| 519 | 2. space-before-tab::tab |
| 520 | 3. space-before-tab::space |
| 521 | |
| 522 | So, for example, if indentation and indentation::space are |
| 523 | included in `whitespace-style' list, the indentation value is |
| 524 | evaluated instead of indentation::space value. |
| 525 | |
| 526 | One reason for not visualize spaces via faces (if `face' is not |
| 527 | included in `whitespace-style') is to use exclusively for |
| 528 | cleaning up a buffer. See `whitespace-cleanup' and |
| 529 | `whitespace-cleanup-region' for documentation. |
| 530 | |
| 531 | See also `whitespace-display-mappings' for documentation." |
| 532 | :type '(repeat :tag "Kind of Blank" |
| 533 | (choice :tag "Kind of Blank Face" |
| 534 | (const :tag "(Face) Face visualization" |
| 535 | face) |
| 536 | (const :tag "(Face) Trailing TABs, SPACEs and HARD SPACEs" |
| 537 | trailing) |
| 538 | (const :tag "(Face) SPACEs and HARD SPACEs" |
| 539 | spaces) |
| 540 | (const :tag "(Face) TABs" tabs) |
| 541 | (const :tag "(Face) Lines" lines) |
| 542 | (const :tag "(Face) SPACEs before TAB" |
| 543 | space-before-tab) |
| 544 | (const :tag "(Face) NEWLINEs" newline) |
| 545 | (const :tag "(Face) Indentation SPACEs" |
| 546 | indentation) |
| 547 | (const :tag "(Face) Empty Lines At BOB And/Or EOB" |
| 548 | empty) |
| 549 | (const :tag "(Face) SPACEs after TAB" |
| 550 | space-after-tab) |
| 551 | (const :tag "(Mark) SPACEs and HARD SPACEs" |
| 552 | space-mark) |
| 553 | (const :tag "(Mark) TABs" tab-mark) |
| 554 | (const :tag "(Mark) NEWLINEs" newline-mark))) |
| 555 | :group 'whitespace) |
| 556 | |
| 557 | (defvar whitespace-space 'whitespace-space |
| 558 | "Symbol face used to visualize SPACE. |
| 559 | Used when `whitespace-style' includes the value `spaces'.") |
| 560 | (make-obsolete-variable 'whitespace-space "use the face instead." "24.4") |
| 561 | |
| 562 | |
| 563 | (defface whitespace-space |
| 564 | '((((class color) (background dark)) |
| 565 | :background "grey20" :foreground "darkgray") |
| 566 | (((class color) (background light)) |
| 567 | :background "LightYellow" :foreground "lightgray") |
| 568 | (t :inverse-video t)) |
| 569 | "Face used to visualize SPACE." |
| 570 | :group 'whitespace) |
| 571 | |
| 572 | |
| 573 | (defvar whitespace-hspace 'whitespace-hspace |
| 574 | "Symbol face used to visualize HARD SPACE. |
| 575 | Used when `whitespace-style' includes the value `spaces'.") |
| 576 | (make-obsolete-variable 'whitespace-hspace "use the face instead." "24.4") |
| 577 | |
| 578 | (defface whitespace-hspace ; 'nobreak-space |
| 579 | '((((class color) (background dark)) |
| 580 | :background "grey24" :foreground "darkgray") |
| 581 | (((class color) (background light)) |
| 582 | :background "LemonChiffon3" :foreground "lightgray") |
| 583 | (t :inverse-video t)) |
| 584 | "Face used to visualize HARD SPACE." |
| 585 | :group 'whitespace) |
| 586 | |
| 587 | |
| 588 | (defvar whitespace-tab 'whitespace-tab |
| 589 | "Symbol face used to visualize TAB. |
| 590 | Used when `whitespace-style' includes the value `tabs'.") |
| 591 | (make-obsolete-variable 'whitespace-tab "use the face instead." "24.4") |
| 592 | |
| 593 | (defface whitespace-tab |
| 594 | '((((class color) (background dark)) |
| 595 | :background "grey22" :foreground "darkgray") |
| 596 | (((class color) (background light)) |
| 597 | :background "beige" :foreground "lightgray") |
| 598 | (t :inverse-video t)) |
| 599 | "Face used to visualize TAB." |
| 600 | :group 'whitespace) |
| 601 | |
| 602 | |
| 603 | (defvar whitespace-newline 'whitespace-newline |
| 604 | "Symbol face used to visualize NEWLINE char mapping. |
| 605 | See `whitespace-display-mappings'. |
| 606 | Used when `whitespace-style' includes the values `newline-mark' |
| 607 | and `newline'.") |
| 608 | (make-obsolete-variable 'whitespace-newline "use the face instead." "24.4") |
| 609 | |
| 610 | (defface whitespace-newline |
| 611 | '((default :weight normal) |
| 612 | (((class color) (background dark)) :foreground "darkgray") |
| 613 | (((class color) (min-colors 88) (background light)) :foreground "lightgray") |
| 614 | ;; Displays with 16 colors use lightgray as background, so using a |
| 615 | ;; lightgray foreground makes the newline mark invisible. |
| 616 | (((class color) (background light)) :foreground "brown") |
| 617 | (t :underline t)) |
| 618 | "Face used to visualize NEWLINE char mapping. |
| 619 | |
| 620 | See `whitespace-display-mappings'." |
| 621 | :group 'whitespace) |
| 622 | |
| 623 | |
| 624 | (defvar whitespace-trailing 'whitespace-trailing |
| 625 | "Symbol face used to visualize trailing blanks. |
| 626 | Used when `whitespace-style' includes the value `trailing'.") |
| 627 | (make-obsolete-variable 'whitespace-trailing "use the face instead." "24.4") |
| 628 | |
| 629 | (defface whitespace-trailing ; 'trailing-whitespace |
| 630 | '((default :weight bold) |
| 631 | (((class mono)) :inverse-video t :underline t) |
| 632 | (t :background "red1" :foreground "yellow")) |
| 633 | "Face used to visualize trailing blanks." |
| 634 | :group 'whitespace) |
| 635 | |
| 636 | |
| 637 | (defvar whitespace-line 'whitespace-line |
| 638 | "Symbol face used to visualize \"long\" lines. |
| 639 | See `whitespace-line-column'. |
| 640 | Used when `whitespace-style' includes the value `line'.") |
| 641 | (make-obsolete-variable 'whitespace-line "use the face instead." "24.4") |
| 642 | |
| 643 | (defface whitespace-line |
| 644 | '((((class mono)) :inverse-video t :weight bold :underline t) |
| 645 | (t :background "gray20" :foreground "violet")) |
| 646 | "Face used to visualize \"long\" lines. |
| 647 | |
| 648 | See `whitespace-line-column'." |
| 649 | :group 'whitespace) |
| 650 | |
| 651 | |
| 652 | (defvar whitespace-space-before-tab 'whitespace-space-before-tab |
| 653 | "Symbol face used to visualize SPACEs before TAB. |
| 654 | Used when `whitespace-style' includes the value `space-before-tab'.") |
| 655 | (make-obsolete-variable 'whitespace-space-before-tab |
| 656 | "use the face instead." "24.4") |
| 657 | |
| 658 | (defface whitespace-space-before-tab |
| 659 | '((((class mono)) :inverse-video t :weight bold :underline t) |
| 660 | (t :background "DarkOrange" :foreground "firebrick")) |
| 661 | "Face used to visualize SPACEs before TAB." |
| 662 | :group 'whitespace) |
| 663 | |
| 664 | |
| 665 | (defvar whitespace-indentation 'whitespace-indentation |
| 666 | "Symbol face used to visualize 8 or more SPACEs at beginning of line. |
| 667 | Used when `whitespace-style' includes the value `indentation'.") |
| 668 | (make-obsolete-variable 'whitespace-indentation "use the face instead." "24.4") |
| 669 | |
| 670 | (defface whitespace-indentation |
| 671 | '((((class mono)) :inverse-video t :weight bold :underline t) |
| 672 | (t :background "yellow" :foreground "firebrick")) |
| 673 | "Face used to visualize 8 or more SPACEs at beginning of line." |
| 674 | :group 'whitespace) |
| 675 | |
| 676 | |
| 677 | (defvar whitespace-empty 'whitespace-empty |
| 678 | "Symbol face used to visualize empty lines at beginning and/or end of buffer. |
| 679 | Used when `whitespace-style' includes the value `empty'.") |
| 680 | (make-obsolete-variable 'whitespace-empty "use the face instead." "24.4") |
| 681 | |
| 682 | (defface whitespace-empty |
| 683 | '((((class mono)) :inverse-video t :weight bold :underline t) |
| 684 | (t :background "yellow" :foreground "firebrick")) |
| 685 | "Face used to visualize empty lines at beginning and/or end of buffer." |
| 686 | :group 'whitespace) |
| 687 | |
| 688 | |
| 689 | (defvar whitespace-space-after-tab 'whitespace-space-after-tab |
| 690 | "Symbol face used to visualize 8 or more SPACEs after TAB. |
| 691 | Used when `whitespace-style' includes the value `space-after-tab'.") |
| 692 | (make-obsolete-variable 'whitespace-space-after-tab |
| 693 | "use the face instead." "24.4") |
| 694 | |
| 695 | (defface whitespace-space-after-tab |
| 696 | '((((class mono)) :inverse-video t :weight bold :underline t) |
| 697 | (t :background "yellow" :foreground "firebrick")) |
| 698 | "Face used to visualize 8 or more SPACEs after TAB." |
| 699 | :group 'whitespace) |
| 700 | |
| 701 | |
| 702 | (defcustom whitespace-hspace-regexp |
| 703 | "\\(\u00A0+\\)" |
| 704 | "Specify HARD SPACE characters regexp. |
| 705 | |
| 706 | Here are some examples: |
| 707 | |
| 708 | \"\\\\(^\\xA0+\\\\)\" \ |
| 709 | visualize only leading HARD SPACEs. |
| 710 | \"\\\\(\\xA0+$\\\\)\" \ |
| 711 | visualize only trailing HARD SPACEs. |
| 712 | \"\\\\(^\\xA0+\\\\|\\xA0+$\\\\)\" \ |
| 713 | visualize leading and/or trailing HARD SPACEs. |
| 714 | \"\\t\\\\(\\xA0+\\\\)\\t\" \ |
| 715 | visualize only HARD SPACEs between TABs. |
| 716 | |
| 717 | NOTE: Enclose always by \\\\( and \\\\) the elements to highlight. |
| 718 | Use exactly one pair of enclosing \\\\( and \\\\). |
| 719 | |
| 720 | Used when `whitespace-style' includes `spaces'." |
| 721 | :type '(regexp :tag "HARD SPACE Chars") |
| 722 | :group 'whitespace) |
| 723 | |
| 724 | |
| 725 | (defcustom whitespace-space-regexp "\\( +\\)" |
| 726 | "Specify SPACE characters regexp. |
| 727 | |
| 728 | If you're using `mule' package, there may be other characters |
| 729 | besides \" \" that should be considered SPACE. |
| 730 | |
| 731 | Here are some examples: |
| 732 | |
| 733 | \"\\\\(^ +\\\\)\" visualize only leading SPACEs. |
| 734 | \"\\\\( +$\\\\)\" visualize only trailing SPACEs. |
| 735 | \"\\\\(^ +\\\\| +$\\\\)\" \ |
| 736 | visualize leading and/or trailing SPACEs. |
| 737 | \"\\t\\\\( +\\\\)\\t\" visualize only SPACEs between TABs. |
| 738 | |
| 739 | NOTE: Enclose always by \\\\( and \\\\) the elements to highlight. |
| 740 | Use exactly one pair of enclosing \\\\( and \\\\). |
| 741 | |
| 742 | Used when `whitespace-style' includes `spaces'." |
| 743 | :type '(regexp :tag "SPACE Chars") |
| 744 | :group 'whitespace) |
| 745 | |
| 746 | |
| 747 | (defcustom whitespace-tab-regexp "\\(\t+\\)" |
| 748 | "Specify TAB characters regexp. |
| 749 | |
| 750 | If you're using `mule' package, there may be other characters |
| 751 | besides \"\\t\" that should be considered TAB. |
| 752 | |
| 753 | Here are some examples: |
| 754 | |
| 755 | \"\\\\(^\\t+\\\\)\" visualize only leading TABs. |
| 756 | \"\\\\(\\t+$\\\\)\" visualize only trailing TABs. |
| 757 | \"\\\\(^\\t+\\\\|\\t+$\\\\)\" \ |
| 758 | visualize leading and/or trailing TABs. |
| 759 | \" \\\\(\\t+\\\\) \" visualize only TABs between SPACEs. |
| 760 | |
| 761 | NOTE: Enclose always by \\\\( and \\\\) the elements to highlight. |
| 762 | Use exactly one pair of enclosing \\\\( and \\\\). |
| 763 | |
| 764 | Used when `whitespace-style' includes `tabs'." |
| 765 | :type '(regexp :tag "TAB Chars") |
| 766 | :group 'whitespace) |
| 767 | |
| 768 | |
| 769 | (defcustom whitespace-trailing-regexp |
| 770 | "\\([\t \u00A0]+\\)$" |
| 771 | "Specify trailing characters regexp. |
| 772 | |
| 773 | There may be other characters besides: |
| 774 | |
| 775 | \" \" \"\\t\" \"\\u00A0\" |
| 776 | |
| 777 | that should be considered blank. |
| 778 | |
| 779 | NOTE: Enclose always by \"\\\\(\" and \"\\\\)$\" the elements to highlight. |
| 780 | Use exactly one pair of enclosing elements above. |
| 781 | |
| 782 | Used when `whitespace-style' includes `trailing'." |
| 783 | :type '(regexp :tag "Trailing Chars") |
| 784 | :group 'whitespace) |
| 785 | |
| 786 | |
| 787 | (defcustom whitespace-space-before-tab-regexp "\\( +\\)\\(\t+\\)" |
| 788 | "Specify SPACEs before TAB regexp. |
| 789 | |
| 790 | Used when `whitespace-style' includes `space-before-tab', |
| 791 | `space-before-tab::tab' or `space-before-tab::space'." |
| 792 | :type '(regexp :tag "SPACEs Before TAB") |
| 793 | :group 'whitespace) |
| 794 | |
| 795 | |
| 796 | (defcustom whitespace-indentation-regexp |
| 797 | '("^\t*\\(\\( \\{%d\\}\\)+\\)[^\n\t]" |
| 798 | . "^ *\\(\t+\\)[^\n]") |
| 799 | "Specify regexp for 8 or more SPACEs at beginning of line. |
| 800 | |
| 801 | It is a cons where the cons car is used for SPACEs visualization |
| 802 | and the cons cdr is used for TABs visualization. |
| 803 | |
| 804 | Used when `whitespace-style' includes `indentation', |
| 805 | `indentation::tab' or `indentation::space'." |
| 806 | :type '(cons (string :tag "Indentation SPACEs") |
| 807 | (string :tag "Indentation TABs")) |
| 808 | :group 'whitespace) |
| 809 | |
| 810 | |
| 811 | (defcustom whitespace-empty-at-bob-regexp "^\\(\\([ \t]*\n\\)+\\)" |
| 812 | "Specify regexp for empty lines at beginning of buffer. |
| 813 | |
| 814 | Used when `whitespace-style' includes `empty'." |
| 815 | :type '(regexp :tag "Empty Lines At Beginning Of Buffer") |
| 816 | :group 'whitespace) |
| 817 | |
| 818 | |
| 819 | (defcustom whitespace-empty-at-eob-regexp "^\\([ \t\n]+\\)" |
| 820 | "Specify regexp for empty lines at end of buffer. |
| 821 | |
| 822 | Used when `whitespace-style' includes `empty'." |
| 823 | :type '(regexp :tag "Empty Lines At End Of Buffer") |
| 824 | :group 'whitespace) |
| 825 | |
| 826 | |
| 827 | (defcustom whitespace-space-after-tab-regexp |
| 828 | '("\t+\\(\\( \\{%d\\}\\)+\\)" |
| 829 | . "\\(\t+\\) +") |
| 830 | "Specify regexp for 8 or more SPACEs after TAB. |
| 831 | |
| 832 | It is a cons where the cons car is used for SPACEs visualization |
| 833 | and the cons cdr is used for TABs visualization. |
| 834 | |
| 835 | Used when `whitespace-style' includes `space-after-tab', |
| 836 | `space-after-tab::tab' or `space-after-tab::space'." |
| 837 | :type '(cons (string :tag "SPACEs After TAB") |
| 838 | string) |
| 839 | :group 'whitespace) |
| 840 | |
| 841 | |
| 842 | (defcustom whitespace-line-column 80 |
| 843 | "Specify column beyond which the line is highlighted. |
| 844 | |
| 845 | It must be an integer or nil. If nil, the `fill-column' variable value is |
| 846 | used. |
| 847 | |
| 848 | Used when `whitespace-style' includes `lines' or `lines-tail'." |
| 849 | :type '(choice :tag "Line Length Limit" |
| 850 | (integer :tag "Line Length") |
| 851 | (const :tag "Use fill-column" nil)) |
| 852 | :group 'whitespace) |
| 853 | |
| 854 | |
| 855 | ;; Hacked from `visible-whitespace-mappings' in visws.el |
| 856 | (defcustom whitespace-display-mappings |
| 857 | '( |
| 858 | (space-mark ?\ [?\u00B7] [?.]) ; space - centered dot |
| 859 | (space-mark ?\xA0 [?\u00A4] [?_]) ; hard space - currency |
| 860 | ;; NEWLINE is displayed using the face `whitespace-newline' |
| 861 | (newline-mark ?\n [?$ ?\n]) ; eol - dollar sign |
| 862 | ;; (newline-mark ?\n [?\u21B5 ?\n] [?$ ?\n]) ; eol - downwards arrow |
| 863 | ;; (newline-mark ?\n [?\u00B6 ?\n] [?$ ?\n]) ; eol - pilcrow |
| 864 | ;; (newline-mark ?\n [?\u00AF ?\n] [?$ ?\n]) ; eol - overscore |
| 865 | ;; (newline-mark ?\n [?\u00AC ?\n] [?$ ?\n]) ; eol - negation |
| 866 | ;; (newline-mark ?\n [?\u00B0 ?\n] [?$ ?\n]) ; eol - degrees |
| 867 | ;; |
| 868 | ;; WARNING: the mapping below has a problem. |
| 869 | ;; When a TAB occupies exactly one column, it will display the |
| 870 | ;; character ?\xBB at that column followed by a TAB which goes to |
| 871 | ;; the next TAB column. |
| 872 | ;; If this is a problem for you, please, comment the line below. |
| 873 | (tab-mark ?\t [?\u00BB ?\t] [?\\ ?\t]) ; tab - left quote mark |
| 874 | ) |
| 875 | "Specify an alist of mappings for displaying characters. |
| 876 | |
| 877 | Each element has the following form: |
| 878 | |
| 879 | (KIND CHAR VECTOR...) |
| 880 | |
| 881 | Where: |
| 882 | |
| 883 | KIND is the kind of character. |
| 884 | It can be one of the following symbols: |
| 885 | |
| 886 | tab-mark for TAB character |
| 887 | |
| 888 | space-mark for SPACE or HARD SPACE character |
| 889 | |
| 890 | newline-mark for NEWLINE character |
| 891 | |
| 892 | CHAR is the character to be mapped. |
| 893 | |
| 894 | VECTOR is a vector of characters to be displayed in place of CHAR. |
| 895 | The first display vector that can be displayed is used; |
| 896 | if no display vector for a mapping can be displayed, then |
| 897 | that character is displayed unmodified. |
| 898 | |
| 899 | The NEWLINE character is displayed using the face given by |
| 900 | `whitespace-newline' variable. |
| 901 | |
| 902 | Used when `whitespace-style' includes `tab-mark', `space-mark' or |
| 903 | `newline-mark'." |
| 904 | :type '(repeat |
| 905 | (list :tag "Character Mapping" |
| 906 | (choice :tag "Char Kind" |
| 907 | (const :tag "Tab" tab-mark) |
| 908 | (const :tag "Space" space-mark) |
| 909 | (const :tag "Newline" newline-mark)) |
| 910 | (character :tag "Char") |
| 911 | (repeat :inline t :tag "Vector List" |
| 912 | (vector :tag "" |
| 913 | (repeat :inline t |
| 914 | :tag "Vector Characters" |
| 915 | (character :tag "Char")))))) |
| 916 | :group 'whitespace) |
| 917 | |
| 918 | |
| 919 | (defcustom whitespace-global-modes t |
| 920 | "Modes for which global `whitespace-mode' is automagically turned on. |
| 921 | |
| 922 | Global `whitespace-mode' is controlled by the command |
| 923 | `global-whitespace-mode'. |
| 924 | |
| 925 | If nil, means no modes have `whitespace-mode' automatically |
| 926 | turned on. |
| 927 | |
| 928 | If t, all modes that support `whitespace-mode' have it |
| 929 | automatically turned on. |
| 930 | |
| 931 | Else it should be a list of `major-mode' symbol names for which |
| 932 | `whitespace-mode' should be automatically turned on. The sense |
| 933 | of the list is negated if it begins with `not'. For example: |
| 934 | |
| 935 | (c-mode c++-mode) |
| 936 | |
| 937 | means that `whitespace-mode' is turned on for buffers in C and |
| 938 | C++ modes only." |
| 939 | :type '(choice :tag "Global Modes" |
| 940 | (const :tag "None" nil) |
| 941 | (const :tag "All" t) |
| 942 | (set :menu-tag "Mode Specific" :tag "Modes" |
| 943 | :value (not) |
| 944 | (const :tag "Except" not) |
| 945 | (repeat :inline t |
| 946 | (symbol :tag "Mode")))) |
| 947 | :group 'whitespace) |
| 948 | |
| 949 | |
| 950 | (defcustom whitespace-action nil |
| 951 | "Specify which action is taken when a buffer is visited or written. |
| 952 | |
| 953 | It's a list containing some or all of the following values: |
| 954 | |
| 955 | nil no action is taken. |
| 956 | |
| 957 | cleanup cleanup any bogus whitespace always when local |
| 958 | whitespace is turned on. |
| 959 | See `whitespace-cleanup' and |
| 960 | `whitespace-cleanup-region'. |
| 961 | |
| 962 | report-on-bogus report if there is any bogus whitespace always |
| 963 | when local whitespace is turned on. |
| 964 | |
| 965 | auto-cleanup cleanup any bogus whitespace when buffer is |
| 966 | written. |
| 967 | See `whitespace-cleanup' and |
| 968 | `whitespace-cleanup-region'. |
| 969 | |
| 970 | abort-on-bogus abort if there is any bogus whitespace and the |
| 971 | buffer is written. |
| 972 | |
| 973 | warn-if-read-only give a warning if `cleanup' or `auto-cleanup' |
| 974 | is included in `whitespace-action' and the |
| 975 | buffer is read-only. |
| 976 | |
| 977 | Any other value is treated as nil." |
| 978 | :type '(choice :tag "Actions" |
| 979 | (const :tag "None" nil) |
| 980 | (repeat :tag "Action List" |
| 981 | (choice :tag "Action" |
| 982 | (const :tag "Cleanup When On" cleanup) |
| 983 | (const :tag "Report On Bogus" report-on-bogus) |
| 984 | (const :tag "Auto Cleanup" auto-cleanup) |
| 985 | (const :tag "Abort On Bogus" abort-on-bogus) |
| 986 | (const :tag "Warn If Read-Only" warn-if-read-only)))) |
| 987 | :group 'whitespace) |
| 988 | |
| 989 | \f |
| 990 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
| 991 | ;;;; User commands - Local mode |
| 992 | |
| 993 | |
| 994 | ;;;###autoload |
| 995 | (define-minor-mode whitespace-mode |
| 996 | "Toggle whitespace visualization (Whitespace mode). |
| 997 | With a prefix argument ARG, enable Whitespace mode if ARG is |
| 998 | positive, and disable it otherwise. If called from Lisp, enable |
| 999 | the mode if ARG is omitted or nil. |
| 1000 | |
| 1001 | See also `whitespace-style', `whitespace-newline' and |
| 1002 | `whitespace-display-mappings'." |
| 1003 | :lighter " ws" |
| 1004 | :init-value nil |
| 1005 | :global nil |
| 1006 | :group 'whitespace |
| 1007 | (cond |
| 1008 | (noninteractive ; running a batch job |
| 1009 | (setq whitespace-mode nil)) |
| 1010 | (whitespace-mode ; whitespace-mode on |
| 1011 | (whitespace-turn-on) |
| 1012 | (whitespace-action-when-on)) |
| 1013 | (t ; whitespace-mode off |
| 1014 | (whitespace-turn-off)))) |
| 1015 | |
| 1016 | |
| 1017 | ;;;###autoload |
| 1018 | (define-minor-mode whitespace-newline-mode |
| 1019 | "Toggle newline visualization (Whitespace Newline mode). |
| 1020 | With a prefix argument ARG, enable Whitespace Newline mode if ARG |
| 1021 | is positive, and disable it otherwise. If called from Lisp, |
| 1022 | enable the mode if ARG is omitted or nil. |
| 1023 | |
| 1024 | Use `whitespace-newline-mode' only for NEWLINE visualization |
| 1025 | exclusively. For other visualizations, including NEWLINE |
| 1026 | visualization together with (HARD) SPACEs and/or TABs, please, |
| 1027 | use `whitespace-mode'. |
| 1028 | |
| 1029 | See also `whitespace-newline' and `whitespace-display-mappings'." |
| 1030 | :lighter " nl" |
| 1031 | :init-value nil |
| 1032 | :global nil |
| 1033 | :group 'whitespace |
| 1034 | (let ((whitespace-style '(face newline-mark newline))) |
| 1035 | (whitespace-mode (if whitespace-newline-mode |
| 1036 | 1 -1))) |
| 1037 | ;; sync states (running a batch job) |
| 1038 | (setq whitespace-newline-mode whitespace-mode)) |
| 1039 | |
| 1040 | \f |
| 1041 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
| 1042 | ;;;; User commands - Global mode |
| 1043 | |
| 1044 | |
| 1045 | ;;;###autoload |
| 1046 | (define-minor-mode global-whitespace-mode |
| 1047 | "Toggle whitespace visualization globally (Global Whitespace mode). |
| 1048 | With a prefix argument ARG, enable Global Whitespace mode if ARG |
| 1049 | is positive, and disable it otherwise. If called from Lisp, |
| 1050 | enable it if ARG is omitted or nil. |
| 1051 | |
| 1052 | See also `whitespace-style', `whitespace-newline' and |
| 1053 | `whitespace-display-mappings'." |
| 1054 | :lighter " WS" |
| 1055 | :init-value nil |
| 1056 | :global t |
| 1057 | :group 'whitespace |
| 1058 | (cond |
| 1059 | (noninteractive ; running a batch job |
| 1060 | (setq global-whitespace-mode nil)) |
| 1061 | (global-whitespace-mode ; global-whitespace-mode on |
| 1062 | (save-current-buffer |
| 1063 | (add-hook 'find-file-hook 'whitespace-turn-on-if-enabled) |
| 1064 | (add-hook 'after-change-major-mode-hook 'whitespace-turn-on-if-enabled) |
| 1065 | (dolist (buffer (buffer-list)) ; adjust all local mode |
| 1066 | (set-buffer buffer) |
| 1067 | (unless whitespace-mode |
| 1068 | (whitespace-turn-on-if-enabled))))) |
| 1069 | (t ; global-whitespace-mode off |
| 1070 | (save-current-buffer |
| 1071 | (remove-hook 'find-file-hook 'whitespace-turn-on-if-enabled) |
| 1072 | (remove-hook 'after-change-major-mode-hook 'whitespace-turn-on-if-enabled) |
| 1073 | (dolist (buffer (buffer-list)) ; adjust all local mode |
| 1074 | (set-buffer buffer) |
| 1075 | (unless whitespace-mode |
| 1076 | (whitespace-turn-off))))))) |
| 1077 | |
| 1078 | (defvar whitespace-enable-predicate |
| 1079 | (lambda () |
| 1080 | (and (cond |
| 1081 | ((eq whitespace-global-modes t)) |
| 1082 | ((listp whitespace-global-modes) |
| 1083 | (if (eq (car-safe whitespace-global-modes) 'not) |
| 1084 | (not (memq major-mode (cdr whitespace-global-modes))) |
| 1085 | (memq major-mode whitespace-global-modes))) |
| 1086 | (t nil)) |
| 1087 | ;; ...we have a display (not running a batch job) |
| 1088 | (not noninteractive) |
| 1089 | ;; ...the buffer is not internal (name starts with a space) |
| 1090 | (not (eq (aref (buffer-name) 0) ?\ )) |
| 1091 | ;; ...the buffer is not special (name starts with *) |
| 1092 | (or (not (eq (aref (buffer-name) 0) ?*)) |
| 1093 | ;; except the scratch buffer. |
| 1094 | (string= (buffer-name) "*scratch*")))) |
| 1095 | "Predicate to decide which buffers obey `global-whitespace-mode'. |
| 1096 | This function is called with no argument and should return non-nil |
| 1097 | if the current buffer should obey `global-whitespace-mode'. |
| 1098 | This variable is normally modified via `add-function'.") |
| 1099 | |
| 1100 | (defun whitespace-turn-on-if-enabled () |
| 1101 | (when (funcall whitespace-enable-predicate) |
| 1102 | (whitespace-turn-on))) |
| 1103 | |
| 1104 | ;;;###autoload |
| 1105 | (define-minor-mode global-whitespace-newline-mode |
| 1106 | "Toggle global newline visualization (Global Whitespace Newline mode). |
| 1107 | With a prefix argument ARG, enable Global Whitespace Newline mode |
| 1108 | if ARG is positive, and disable it otherwise. If called from |
| 1109 | Lisp, enable it if ARG is omitted or nil. |
| 1110 | |
| 1111 | Use `global-whitespace-newline-mode' only for NEWLINE |
| 1112 | visualization exclusively. For other visualizations, including |
| 1113 | NEWLINE visualization together with (HARD) SPACEs and/or TABs, |
| 1114 | please use `global-whitespace-mode'. |
| 1115 | |
| 1116 | See also `whitespace-newline' and `whitespace-display-mappings'." |
| 1117 | :lighter " NL" |
| 1118 | :init-value nil |
| 1119 | :global t |
| 1120 | :group 'whitespace |
| 1121 | (let ((whitespace-style '(newline-mark newline))) |
| 1122 | (global-whitespace-mode (if global-whitespace-newline-mode |
| 1123 | 1 -1)) |
| 1124 | ;; sync states (running a batch job) |
| 1125 | (setq global-whitespace-newline-mode global-whitespace-mode))) |
| 1126 | |
| 1127 | \f |
| 1128 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
| 1129 | ;;;; User commands - Toggle |
| 1130 | |
| 1131 | |
| 1132 | (defconst whitespace-style-value-list |
| 1133 | '(face |
| 1134 | tabs |
| 1135 | spaces |
| 1136 | trailing |
| 1137 | lines |
| 1138 | lines-tail |
| 1139 | newline |
| 1140 | empty |
| 1141 | indentation |
| 1142 | indentation::tab |
| 1143 | indentation::space |
| 1144 | space-after-tab |
| 1145 | space-after-tab::tab |
| 1146 | space-after-tab::space |
| 1147 | space-before-tab |
| 1148 | space-before-tab::tab |
| 1149 | space-before-tab::space |
| 1150 | help-newline ; value used by `whitespace-insert-option-mark' |
| 1151 | tab-mark |
| 1152 | space-mark |
| 1153 | newline-mark |
| 1154 | ) |
| 1155 | "List of valid `whitespace-style' values.") |
| 1156 | |
| 1157 | |
| 1158 | (defconst whitespace-toggle-option-alist |
| 1159 | '((?f . face) |
| 1160 | (?t . tabs) |
| 1161 | (?s . spaces) |
| 1162 | (?r . trailing) |
| 1163 | (?l . lines) |
| 1164 | (?L . lines-tail) |
| 1165 | (?n . newline) |
| 1166 | (?e . empty) |
| 1167 | (?\C-i . indentation) |
| 1168 | (?I . indentation::tab) |
| 1169 | (?i . indentation::space) |
| 1170 | (?\C-a . space-after-tab) |
| 1171 | (?A . space-after-tab::tab) |
| 1172 | (?a . space-after-tab::space) |
| 1173 | (?\C-b . space-before-tab) |
| 1174 | (?B . space-before-tab::tab) |
| 1175 | (?b . space-before-tab::space) |
| 1176 | (?T . tab-mark) |
| 1177 | (?S . space-mark) |
| 1178 | (?N . newline-mark) |
| 1179 | (?x . whitespace-style) |
| 1180 | ) |
| 1181 | "Alist of toggle options. |
| 1182 | |
| 1183 | Each element has the form: |
| 1184 | |
| 1185 | (CHAR . SYMBOL) |
| 1186 | |
| 1187 | Where: |
| 1188 | |
| 1189 | CHAR is a char which the user will have to type. |
| 1190 | |
| 1191 | SYMBOL is a valid symbol associated with CHAR. |
| 1192 | See `whitespace-style-value-list'.") |
| 1193 | |
| 1194 | |
| 1195 | (defvar whitespace-active-style nil |
| 1196 | "Used to save locally `whitespace-style' value.") |
| 1197 | |
| 1198 | (defvar whitespace-indent-tabs-mode indent-tabs-mode |
| 1199 | "Used to save locally `indent-tabs-mode' value.") |
| 1200 | |
| 1201 | (defvar whitespace-tab-width tab-width |
| 1202 | "Used to save locally `tab-width' value.") |
| 1203 | |
| 1204 | (defvar whitespace-point (point) |
| 1205 | "Used to save locally current point value. |
| 1206 | Used by function `whitespace-trailing-regexp' (which see).") |
| 1207 | (defvar-local whitespace-point--used nil |
| 1208 | "Region whose highlighting depends on `whitespace-point'.") |
| 1209 | |
| 1210 | (defvar whitespace-font-lock-refontify nil |
| 1211 | "Used to save locally the font-lock refontify state. |
| 1212 | Used by function `whitespace-post-command-hook' (which see).") |
| 1213 | |
| 1214 | (defvar whitespace-bob-marker nil |
| 1215 | "Used to save locally the bob marker value. |
| 1216 | Used by function `whitespace-post-command-hook' (which see).") |
| 1217 | |
| 1218 | (defvar whitespace-eob-marker nil |
| 1219 | "Used to save locally the eob marker value. |
| 1220 | Used by function `whitespace-post-command-hook' (which see).") |
| 1221 | |
| 1222 | (defvar whitespace-buffer-changed nil |
| 1223 | "Used to indicate locally if buffer changed. |
| 1224 | Used by `whitespace-post-command-hook' and `whitespace-buffer-changed' |
| 1225 | functions (which see).") |
| 1226 | |
| 1227 | |
| 1228 | ;;;###autoload |
| 1229 | (defun whitespace-toggle-options (arg) |
| 1230 | "Toggle local `whitespace-mode' options. |
| 1231 | |
| 1232 | If local whitespace-mode is off, toggle the option given by ARG |
| 1233 | and turn on local whitespace-mode. |
| 1234 | |
| 1235 | If local whitespace-mode is on, toggle the option given by ARG |
| 1236 | and restart local whitespace-mode. |
| 1237 | |
| 1238 | Interactively, it reads one of the following chars: |
| 1239 | |
| 1240 | CHAR MEANING |
| 1241 | (VIA FACES) |
| 1242 | f toggle face visualization |
| 1243 | t toggle TAB visualization |
| 1244 | s toggle SPACE and HARD SPACE visualization |
| 1245 | r toggle trailing blanks visualization |
| 1246 | l toggle \"long lines\" visualization |
| 1247 | L toggle \"long lines\" tail visualization |
| 1248 | n toggle NEWLINE visualization |
| 1249 | e toggle empty line at bob and/or eob visualization |
| 1250 | C-i toggle indentation SPACEs visualization (via `indent-tabs-mode') |
| 1251 | I toggle indentation SPACEs visualization |
| 1252 | i toggle indentation TABs visualization |
| 1253 | C-a toggle SPACEs after TAB visualization (via `indent-tabs-mode') |
| 1254 | A toggle SPACEs after TAB: SPACEs visualization |
| 1255 | a toggle SPACEs after TAB: TABs visualization |
| 1256 | C-b toggle SPACEs before TAB visualization (via `indent-tabs-mode') |
| 1257 | B toggle SPACEs before TAB: SPACEs visualization |
| 1258 | b toggle SPACEs before TAB: TABs visualization |
| 1259 | |
| 1260 | (VIA DISPLAY TABLE) |
| 1261 | T toggle TAB visualization |
| 1262 | S toggle SPACEs before TAB visualization |
| 1263 | N toggle NEWLINE visualization |
| 1264 | |
| 1265 | x restore `whitespace-style' value |
| 1266 | ? display brief help |
| 1267 | |
| 1268 | Non-interactively, ARG should be a symbol or a list of symbols. |
| 1269 | The valid symbols are: |
| 1270 | |
| 1271 | face toggle face visualization |
| 1272 | tabs toggle TAB visualization |
| 1273 | spaces toggle SPACE and HARD SPACE visualization |
| 1274 | trailing toggle trailing blanks visualization |
| 1275 | lines toggle \"long lines\" visualization |
| 1276 | lines-tail toggle \"long lines\" tail visualization |
| 1277 | newline toggle NEWLINE visualization |
| 1278 | empty toggle empty line at bob and/or eob visualization |
| 1279 | indentation toggle indentation SPACEs visualization |
| 1280 | indentation::tab toggle indentation SPACEs visualization |
| 1281 | indentation::space toggle indentation TABs visualization |
| 1282 | space-after-tab toggle SPACEs after TAB visualization |
| 1283 | space-after-tab::tab toggle SPACEs after TAB: SPACEs visualization |
| 1284 | space-after-tab::space toggle SPACEs after TAB: TABs visualization |
| 1285 | space-before-tab toggle SPACEs before TAB visualization |
| 1286 | space-before-tab::tab toggle SPACEs before TAB: SPACEs visualization |
| 1287 | space-before-tab::space toggle SPACEs before TAB: TABs visualization |
| 1288 | |
| 1289 | tab-mark toggle TAB visualization |
| 1290 | space-mark toggle SPACEs before TAB visualization |
| 1291 | newline-mark toggle NEWLINE visualization |
| 1292 | |
| 1293 | whitespace-style restore `whitespace-style' value |
| 1294 | |
| 1295 | See `whitespace-style' and `indent-tabs-mode' for documentation." |
| 1296 | (interactive (whitespace-interactive-char t)) |
| 1297 | (let ((whitespace-style |
| 1298 | (whitespace-toggle-list t arg whitespace-active-style))) |
| 1299 | (whitespace-mode 0) |
| 1300 | (whitespace-mode 1))) |
| 1301 | |
| 1302 | |
| 1303 | (defvar whitespace-toggle-style nil |
| 1304 | "Used to toggle the global `whitespace-style' value.") |
| 1305 | |
| 1306 | |
| 1307 | ;;;###autoload |
| 1308 | (defun global-whitespace-toggle-options (arg) |
| 1309 | "Toggle global `whitespace-mode' options. |
| 1310 | |
| 1311 | If global whitespace-mode is off, toggle the option given by ARG |
| 1312 | and turn on global whitespace-mode. |
| 1313 | |
| 1314 | If global whitespace-mode is on, toggle the option given by ARG |
| 1315 | and restart global whitespace-mode. |
| 1316 | |
| 1317 | Interactively, it accepts one of the following chars: |
| 1318 | |
| 1319 | CHAR MEANING |
| 1320 | (VIA FACES) |
| 1321 | f toggle face visualization |
| 1322 | t toggle TAB visualization |
| 1323 | s toggle SPACE and HARD SPACE visualization |
| 1324 | r toggle trailing blanks visualization |
| 1325 | l toggle \"long lines\" visualization |
| 1326 | L toggle \"long lines\" tail visualization |
| 1327 | n toggle NEWLINE visualization |
| 1328 | e toggle empty line at bob and/or eob visualization |
| 1329 | C-i toggle indentation SPACEs visualization (via `indent-tabs-mode') |
| 1330 | I toggle indentation SPACEs visualization |
| 1331 | i toggle indentation TABs visualization |
| 1332 | C-a toggle SPACEs after TAB visualization (via `indent-tabs-mode') |
| 1333 | A toggle SPACEs after TAB: SPACEs visualization |
| 1334 | a toggle SPACEs after TAB: TABs visualization |
| 1335 | C-b toggle SPACEs before TAB visualization (via `indent-tabs-mode') |
| 1336 | B toggle SPACEs before TAB: SPACEs visualization |
| 1337 | b toggle SPACEs before TAB: TABs visualization |
| 1338 | |
| 1339 | (VIA DISPLAY TABLE) |
| 1340 | T toggle TAB visualization |
| 1341 | S toggle SPACEs before TAB visualization |
| 1342 | N toggle NEWLINE visualization |
| 1343 | |
| 1344 | x restore `whitespace-style' value |
| 1345 | ? display brief help |
| 1346 | |
| 1347 | Non-interactively, ARG should be a symbol or a list of symbols. |
| 1348 | The valid symbols are: |
| 1349 | |
| 1350 | face toggle face visualization |
| 1351 | tabs toggle TAB visualization |
| 1352 | spaces toggle SPACE and HARD SPACE visualization |
| 1353 | trailing toggle trailing blanks visualization |
| 1354 | lines toggle \"long lines\" visualization |
| 1355 | lines-tail toggle \"long lines\" tail visualization |
| 1356 | newline toggle NEWLINE visualization |
| 1357 | empty toggle empty line at bob and/or eob visualization |
| 1358 | indentation toggle indentation SPACEs visualization |
| 1359 | indentation::tab toggle indentation SPACEs visualization |
| 1360 | indentation::space toggle indentation TABs visualization |
| 1361 | space-after-tab toggle SPACEs after TAB visualization |
| 1362 | space-after-tab::tab toggle SPACEs after TAB: SPACEs visualization |
| 1363 | space-after-tab::space toggle SPACEs after TAB: TABs visualization |
| 1364 | space-before-tab toggle SPACEs before TAB visualization |
| 1365 | space-before-tab::tab toggle SPACEs before TAB: SPACEs visualization |
| 1366 | space-before-tab::space toggle SPACEs before TAB: TABs visualization |
| 1367 | |
| 1368 | tab-mark toggle TAB visualization |
| 1369 | space-mark toggle SPACEs before TAB visualization |
| 1370 | newline-mark toggle NEWLINE visualization |
| 1371 | |
| 1372 | whitespace-style restore `whitespace-style' value |
| 1373 | |
| 1374 | See `whitespace-style' and `indent-tabs-mode' for documentation." |
| 1375 | (interactive (whitespace-interactive-char nil)) |
| 1376 | (let ((whitespace-style |
| 1377 | (whitespace-toggle-list nil arg whitespace-toggle-style))) |
| 1378 | (setq whitespace-toggle-style whitespace-style) |
| 1379 | (global-whitespace-mode 0) |
| 1380 | (global-whitespace-mode 1))) |
| 1381 | |
| 1382 | \f |
| 1383 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
| 1384 | ;;;; User commands - Cleanup |
| 1385 | |
| 1386 | |
| 1387 | ;;;###autoload |
| 1388 | (defun whitespace-cleanup () |
| 1389 | "Cleanup some blank problems in all buffer or at region. |
| 1390 | |
| 1391 | It usually applies to the whole buffer, but in transient mark |
| 1392 | mode when the mark is active, it applies to the region. It also |
| 1393 | applies to the region when it is not in transient mark mode, the |
| 1394 | mark is active and \\[universal-argument] was pressed just before |
| 1395 | calling `whitespace-cleanup' interactively. |
| 1396 | |
| 1397 | See also `whitespace-cleanup-region'. |
| 1398 | |
| 1399 | The problems cleaned up are: |
| 1400 | |
| 1401 | 1. empty lines at beginning of buffer. |
| 1402 | 2. empty lines at end of buffer. |
| 1403 | If `whitespace-style' includes the value `empty', remove all |
| 1404 | empty lines at beginning and/or end of buffer. |
| 1405 | |
| 1406 | 3. 8 or more SPACEs at beginning of line. |
| 1407 | If `whitespace-style' includes the value `indentation': |
| 1408 | replace 8 or more SPACEs at beginning of line by TABs, if |
| 1409 | `indent-tabs-mode' is non-nil; otherwise, replace TABs by |
| 1410 | SPACEs. |
| 1411 | If `whitespace-style' includes the value `indentation::tab', |
| 1412 | replace 8 or more SPACEs at beginning of line by TABs. |
| 1413 | If `whitespace-style' includes the value `indentation::space', |
| 1414 | replace TABs by SPACEs. |
| 1415 | |
| 1416 | 4. SPACEs before TAB. |
| 1417 | If `whitespace-style' includes the value `space-before-tab': |
| 1418 | replace SPACEs by TABs, if `indent-tabs-mode' is non-nil; |
| 1419 | otherwise, replace TABs by SPACEs. |
| 1420 | If `whitespace-style' includes the value |
| 1421 | `space-before-tab::tab', replace SPACEs by TABs. |
| 1422 | If `whitespace-style' includes the value |
| 1423 | `space-before-tab::space', replace TABs by SPACEs. |
| 1424 | |
| 1425 | 5. SPACEs or TABs at end of line. |
| 1426 | If `whitespace-style' includes the value `trailing', remove |
| 1427 | all SPACEs or TABs at end of line. |
| 1428 | |
| 1429 | 6. 8 or more SPACEs after TAB. |
| 1430 | If `whitespace-style' includes the value `space-after-tab': |
| 1431 | replace SPACEs by TABs, if `indent-tabs-mode' is non-nil; |
| 1432 | otherwise, replace TABs by SPACEs. |
| 1433 | If `whitespace-style' includes the value |
| 1434 | `space-after-tab::tab', replace SPACEs by TABs. |
| 1435 | If `whitespace-style' includes the value |
| 1436 | `space-after-tab::space', replace TABs by SPACEs. |
| 1437 | |
| 1438 | See `whitespace-style', `indent-tabs-mode' and `tab-width' for |
| 1439 | documentation." |
| 1440 | (interactive "@") |
| 1441 | (cond |
| 1442 | ;; read-only buffer |
| 1443 | (buffer-read-only |
| 1444 | (whitespace-warn-read-only "cleanup")) |
| 1445 | ;; region active |
| 1446 | ((and (or transient-mark-mode |
| 1447 | current-prefix-arg) |
| 1448 | mark-active) |
| 1449 | ;; PROBLEMs 1 and 2 are not handled in region |
| 1450 | ;; PROBLEM 3: 8 or more SPACEs at bol |
| 1451 | ;; PROBLEM 4: SPACEs before TAB |
| 1452 | ;; PROBLEM 5: SPACEs or TABs at eol |
| 1453 | ;; PROBLEM 6: 8 or more SPACEs after TAB |
| 1454 | (whitespace-cleanup-region (region-beginning) (region-end))) |
| 1455 | ;; whole buffer |
| 1456 | (t |
| 1457 | (save-excursion |
| 1458 | (save-match-data ;FIXME: Why? |
| 1459 | ;; PROBLEM 1: empty lines at bob |
| 1460 | ;; PROBLEM 2: empty lines at eob |
| 1461 | ;; ACTION: remove all empty lines at bob and/or eob |
| 1462 | (when (memq 'empty whitespace-style) |
| 1463 | (let (overwrite-mode) ; enforce no overwrite |
| 1464 | (goto-char (point-min)) |
| 1465 | (when (looking-at whitespace-empty-at-bob-regexp) |
| 1466 | (delete-region (match-beginning 1) (match-end 1))) |
| 1467 | (when (re-search-forward |
| 1468 | (concat whitespace-empty-at-eob-regexp "\\'") nil t) |
| 1469 | (delete-region (match-beginning 1) (match-end 1))))))) |
| 1470 | ;; PROBLEM 3: 8 or more SPACEs at bol |
| 1471 | ;; PROBLEM 4: SPACEs before TAB |
| 1472 | ;; PROBLEM 5: SPACEs or TABs at eol |
| 1473 | ;; PROBLEM 6: 8 or more SPACEs after TAB |
| 1474 | (whitespace-cleanup-region (point-min) (point-max))))) |
| 1475 | |
| 1476 | (defun whitespace-ensure-local-variables () |
| 1477 | "Set `whitespace-indent-tabs-mode' and `whitespace-tab-width' locally." |
| 1478 | (set (make-local-variable 'whitespace-indent-tabs-mode) |
| 1479 | indent-tabs-mode) |
| 1480 | (set (make-local-variable 'whitespace-tab-width) |
| 1481 | tab-width)) |
| 1482 | |
| 1483 | ;;;###autoload |
| 1484 | (defun whitespace-cleanup-region (start end) |
| 1485 | "Cleanup some blank problems at region. |
| 1486 | |
| 1487 | The problems cleaned up are: |
| 1488 | |
| 1489 | 1. 8 or more SPACEs at beginning of line. |
| 1490 | If `whitespace-style' includes the value `indentation': |
| 1491 | replace 8 or more SPACEs at beginning of line by TABs, if |
| 1492 | `indent-tabs-mode' is non-nil; otherwise, replace TABs by |
| 1493 | SPACEs. |
| 1494 | If `whitespace-style' includes the value `indentation::tab', |
| 1495 | replace 8 or more SPACEs at beginning of line by TABs. |
| 1496 | If `whitespace-style' includes the value `indentation::space', |
| 1497 | replace TABs by SPACEs. |
| 1498 | |
| 1499 | 2. SPACEs before TAB. |
| 1500 | If `whitespace-style' includes the value `space-before-tab': |
| 1501 | replace SPACEs by TABs, if `indent-tabs-mode' is non-nil; |
| 1502 | otherwise, replace TABs by SPACEs. |
| 1503 | If `whitespace-style' includes the value |
| 1504 | `space-before-tab::tab', replace SPACEs by TABs. |
| 1505 | If `whitespace-style' includes the value |
| 1506 | `space-before-tab::space', replace TABs by SPACEs. |
| 1507 | |
| 1508 | 3. SPACEs or TABs at end of line. |
| 1509 | If `whitespace-style' includes the value `trailing', remove |
| 1510 | all SPACEs or TABs at end of line. |
| 1511 | |
| 1512 | 4. 8 or more SPACEs after TAB. |
| 1513 | If `whitespace-style' includes the value `space-after-tab': |
| 1514 | replace SPACEs by TABs, if `indent-tabs-mode' is non-nil; |
| 1515 | otherwise, replace TABs by SPACEs. |
| 1516 | If `whitespace-style' includes the value |
| 1517 | `space-after-tab::tab', replace SPACEs by TABs. |
| 1518 | If `whitespace-style' includes the value |
| 1519 | `space-after-tab::space', replace TABs by SPACEs. |
| 1520 | |
| 1521 | See `whitespace-style', `indent-tabs-mode' and `tab-width' for |
| 1522 | documentation." |
| 1523 | (interactive "@r") |
| 1524 | (if buffer-read-only |
| 1525 | ;; read-only buffer |
| 1526 | (whitespace-warn-read-only "cleanup region") |
| 1527 | ;; non-read-only buffer |
| 1528 | (whitespace-ensure-local-variables) |
| 1529 | (let ((rstart (min start end)) |
| 1530 | (rend (copy-marker (max start end))) |
| 1531 | (indent-tabs-mode whitespace-indent-tabs-mode) |
| 1532 | (tab-width whitespace-tab-width) |
| 1533 | overwrite-mode ; enforce no overwrite |
| 1534 | tmp) |
| 1535 | (save-excursion |
| 1536 | (save-match-data ;FIXME: Why? |
| 1537 | ;; PROBLEM 1: 8 or more SPACEs at bol |
| 1538 | (cond |
| 1539 | ;; ACTION: replace 8 or more SPACEs at bol by TABs, if |
| 1540 | ;; `indent-tabs-mode' is non-nil; otherwise, replace TABs |
| 1541 | ;; by SPACEs. |
| 1542 | ((memq 'indentation whitespace-style) |
| 1543 | (let ((regexp (whitespace-indentation-regexp))) |
| 1544 | (goto-char rstart) |
| 1545 | (while (re-search-forward regexp rend t) |
| 1546 | (setq tmp (current-indentation)) |
| 1547 | (goto-char (match-beginning 0)) |
| 1548 | (delete-horizontal-space) |
| 1549 | (unless (eolp) |
| 1550 | (indent-to tmp))))) |
| 1551 | ;; ACTION: replace 8 or more SPACEs at bol by TABs. |
| 1552 | ((memq 'indentation::tab whitespace-style) |
| 1553 | (whitespace-replace-action |
| 1554 | 'tabify rstart rend |
| 1555 | (whitespace-indentation-regexp 'tab) 0)) |
| 1556 | ;; ACTION: replace TABs by SPACEs. |
| 1557 | ((memq 'indentation::space whitespace-style) |
| 1558 | (whitespace-replace-action |
| 1559 | 'untabify rstart rend |
| 1560 | (whitespace-indentation-regexp 'space) 0))) |
| 1561 | ;; PROBLEM 3: SPACEs or TABs at eol |
| 1562 | ;; ACTION: remove all SPACEs or TABs at eol |
| 1563 | (when (memq 'trailing whitespace-style) |
| 1564 | (whitespace-replace-action |
| 1565 | 'delete-region rstart rend |
| 1566 | whitespace-trailing-regexp 1)) |
| 1567 | ;; PROBLEM 4: 8 or more SPACEs after TAB |
| 1568 | (cond |
| 1569 | ;; ACTION: replace 8 or more SPACEs by TABs, if |
| 1570 | ;; `indent-tabs-mode' is non-nil; otherwise, replace TABs |
| 1571 | ;; by SPACEs. |
| 1572 | ((memq 'space-after-tab whitespace-style) |
| 1573 | (whitespace-replace-action |
| 1574 | (if whitespace-indent-tabs-mode 'tabify 'untabify) |
| 1575 | rstart rend (whitespace-space-after-tab-regexp) 1)) |
| 1576 | ;; ACTION: replace 8 or more SPACEs by TABs. |
| 1577 | ((memq 'space-after-tab::tab whitespace-style) |
| 1578 | (whitespace-replace-action |
| 1579 | 'tabify rstart rend |
| 1580 | (whitespace-space-after-tab-regexp 'tab) 1)) |
| 1581 | ;; ACTION: replace TABs by SPACEs. |
| 1582 | ((memq 'space-after-tab::space whitespace-style) |
| 1583 | (whitespace-replace-action |
| 1584 | 'untabify rstart rend |
| 1585 | (whitespace-space-after-tab-regexp 'space) 1))) |
| 1586 | ;; PROBLEM 2: SPACEs before TAB |
| 1587 | (cond |
| 1588 | ;; ACTION: replace SPACEs before TAB by TABs, if |
| 1589 | ;; `indent-tabs-mode' is non-nil; otherwise, replace TABs |
| 1590 | ;; by SPACEs. |
| 1591 | ((memq 'space-before-tab whitespace-style) |
| 1592 | (whitespace-replace-action |
| 1593 | (if whitespace-indent-tabs-mode 'tabify 'untabify) |
| 1594 | rstart rend whitespace-space-before-tab-regexp |
| 1595 | (if whitespace-indent-tabs-mode 0 2))) |
| 1596 | ;; ACTION: replace SPACEs before TAB by TABs. |
| 1597 | ((memq 'space-before-tab::tab whitespace-style) |
| 1598 | (whitespace-replace-action |
| 1599 | 'tabify rstart rend |
| 1600 | whitespace-space-before-tab-regexp 0)) |
| 1601 | ;; ACTION: replace TABs by SPACEs. |
| 1602 | ((memq 'space-before-tab::space whitespace-style) |
| 1603 | (whitespace-replace-action |
| 1604 | 'untabify rstart rend |
| 1605 | whitespace-space-before-tab-regexp 2))))) |
| 1606 | (set-marker rend nil)))) ; point marker to nowhere |
| 1607 | |
| 1608 | |
| 1609 | (defun whitespace-replace-action (action rstart rend regexp index) |
| 1610 | "Do ACTION in the string matched by REGEXP between RSTART and REND. |
| 1611 | |
| 1612 | INDEX is the level group matched by REGEXP and used by ACTION. |
| 1613 | |
| 1614 | See also `tab-width'." |
| 1615 | (goto-char rstart) |
| 1616 | (while (re-search-forward regexp rend t) |
| 1617 | (goto-char (match-end index)) |
| 1618 | (funcall action (match-beginning index) (match-end index)))) |
| 1619 | |
| 1620 | \f |
| 1621 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
| 1622 | ;;;; User command - report |
| 1623 | |
| 1624 | |
| 1625 | (defun whitespace-regexp (regexp &optional kind) |
| 1626 | "Return REGEXP depending on `whitespace-indent-tabs-mode'." |
| 1627 | (cond |
| 1628 | ((or (eq kind 'tab) |
| 1629 | whitespace-indent-tabs-mode) |
| 1630 | (format (car regexp) whitespace-tab-width)) |
| 1631 | ((or (eq kind 'space) |
| 1632 | (not whitespace-indent-tabs-mode)) |
| 1633 | (cdr regexp)))) |
| 1634 | |
| 1635 | |
| 1636 | (defun whitespace-indentation-regexp (&optional kind) |
| 1637 | "Return the indentation regexp depending on `whitespace-indent-tabs-mode'." |
| 1638 | (whitespace-regexp whitespace-indentation-regexp kind)) |
| 1639 | |
| 1640 | |
| 1641 | (defun whitespace-space-after-tab-regexp (&optional kind) |
| 1642 | "Return the space-after-tab regexp depending on `whitespace-indent-tabs-mode'." |
| 1643 | (whitespace-regexp whitespace-space-after-tab-regexp kind)) |
| 1644 | |
| 1645 | |
| 1646 | (defconst whitespace-report-list |
| 1647 | (list |
| 1648 | (cons 'empty whitespace-empty-at-bob-regexp) |
| 1649 | (cons 'empty whitespace-empty-at-eob-regexp) |
| 1650 | (cons 'trailing whitespace-trailing-regexp) |
| 1651 | (cons 'indentation nil) |
| 1652 | (cons 'indentation::tab nil) |
| 1653 | (cons 'indentation::space nil) |
| 1654 | (cons 'space-before-tab whitespace-space-before-tab-regexp) |
| 1655 | (cons 'space-before-tab::tab whitespace-space-before-tab-regexp) |
| 1656 | (cons 'space-before-tab::space whitespace-space-before-tab-regexp) |
| 1657 | (cons 'space-after-tab nil) |
| 1658 | (cons 'space-after-tab::tab nil) |
| 1659 | (cons 'space-after-tab::space nil) |
| 1660 | ) |
| 1661 | "List of whitespace bogus symbol and corresponding regexp.") |
| 1662 | |
| 1663 | |
| 1664 | (defconst whitespace-report-text |
| 1665 | '( ;; `indent-tabs-mode' has non-nil value |
| 1666 | "\ |
| 1667 | Whitespace Report |
| 1668 | |
| 1669 | Current Setting Whitespace Problem |
| 1670 | |
| 1671 | empty [] [] empty lines at beginning of buffer |
| 1672 | empty [] [] empty lines at end of buffer |
| 1673 | trailing [] [] SPACEs or TABs at end of line |
| 1674 | indentation [] [] 8 or more SPACEs at beginning of line |
| 1675 | indentation::tab [] [] 8 or more SPACEs at beginning of line |
| 1676 | indentation::space [] [] TABs at beginning of line |
| 1677 | space-before-tab [] [] SPACEs before TAB |
| 1678 | space-before-tab::tab [] [] SPACEs before TAB: SPACEs |
| 1679 | space-before-tab::space [] [] SPACEs before TAB: TABs |
| 1680 | space-after-tab [] [] 8 or more SPACEs after TAB |
| 1681 | space-after-tab::tab [] [] 8 or more SPACEs after TAB: SPACEs |
| 1682 | space-after-tab::space [] [] 8 or more SPACEs after TAB: TABs |
| 1683 | |
| 1684 | indent-tabs-mode = |
| 1685 | tab-width = \n\n" |
| 1686 | . ;; `indent-tabs-mode' has nil value |
| 1687 | "\ |
| 1688 | Whitespace Report |
| 1689 | |
| 1690 | Current Setting Whitespace Problem |
| 1691 | |
| 1692 | empty [] [] empty lines at beginning of buffer |
| 1693 | empty [] [] empty lines at end of buffer |
| 1694 | trailing [] [] SPACEs or TABs at end of line |
| 1695 | indentation [] [] TABs at beginning of line |
| 1696 | indentation::tab [] [] 8 or more SPACEs at beginning of line |
| 1697 | indentation::space [] [] TABs at beginning of line |
| 1698 | space-before-tab [] [] SPACEs before TAB |
| 1699 | space-before-tab::tab [] [] SPACEs before TAB: SPACEs |
| 1700 | space-before-tab::space [] [] SPACEs before TAB: TABs |
| 1701 | space-after-tab [] [] 8 or more SPACEs after TAB |
| 1702 | space-after-tab::tab [] [] 8 or more SPACEs after TAB: SPACEs |
| 1703 | space-after-tab::space [] [] 8 or more SPACEs after TAB: TABs |
| 1704 | |
| 1705 | indent-tabs-mode = |
| 1706 | tab-width = \n\n") |
| 1707 | "Text for whitespace bogus report. |
| 1708 | |
| 1709 | It is a cons of strings, where the car part is used when |
| 1710 | `indent-tabs-mode' is non-nil, and the cdr part is used when |
| 1711 | `indent-tabs-mode' is nil.") |
| 1712 | |
| 1713 | |
| 1714 | (defconst whitespace-report-buffer-name "*Whitespace Report*" |
| 1715 | "The buffer name for whitespace bogus report.") |
| 1716 | |
| 1717 | |
| 1718 | ;;;###autoload |
| 1719 | (defun whitespace-report (&optional force report-if-bogus) |
| 1720 | "Report some whitespace problems in buffer. |
| 1721 | |
| 1722 | Perform `whitespace-report-region' on the current buffer." |
| 1723 | (interactive (list current-prefix-arg)) |
| 1724 | (whitespace-report-region (point-min) (point-max) |
| 1725 | force report-if-bogus)) |
| 1726 | |
| 1727 | |
| 1728 | ;;;###autoload |
| 1729 | (defun whitespace-report-region (start end &optional force report-if-bogus) |
| 1730 | "Report some whitespace problems in a region. |
| 1731 | |
| 1732 | Return nil if there is no whitespace problem; otherwise, return |
| 1733 | non-nil. |
| 1734 | |
| 1735 | If FORCE is non-nil or \\[universal-argument] was pressed just |
| 1736 | before calling `whitespace-report-region' interactively, it |
| 1737 | forces `whitespace-style' to have: |
| 1738 | |
| 1739 | empty |
| 1740 | trailing |
| 1741 | indentation |
| 1742 | space-before-tab |
| 1743 | space-after-tab |
| 1744 | |
| 1745 | If REPORT-IF-BOGUS is t, it reports only when there are any |
| 1746 | whitespace problems in buffer; if it is `never', it does not |
| 1747 | report problems. |
| 1748 | |
| 1749 | Report if some of the following whitespace problems exist: |
| 1750 | |
| 1751 | * If `indent-tabs-mode' is non-nil: |
| 1752 | empty 1. empty lines at beginning of buffer. |
| 1753 | empty 2. empty lines at end of buffer. |
| 1754 | trailing 3. SPACEs or TABs at end of line. |
| 1755 | indentation 4. 8 or more SPACEs at beginning of line. |
| 1756 | space-before-tab 5. SPACEs before TAB. |
| 1757 | space-after-tab 6. 8 or more SPACEs after TAB. |
| 1758 | |
| 1759 | * If `indent-tabs-mode' is nil: |
| 1760 | empty 1. empty lines at beginning of buffer. |
| 1761 | empty 2. empty lines at end of buffer. |
| 1762 | trailing 3. SPACEs or TABs at end of line. |
| 1763 | indentation 4. TABS at beginning of line. |
| 1764 | space-before-tab 5. SPACEs before TAB. |
| 1765 | space-after-tab 6. 8 or more SPACEs after TAB. |
| 1766 | |
| 1767 | See `whitespace-style' for documentation. |
| 1768 | See also `whitespace-cleanup' and `whitespace-cleanup-region' for |
| 1769 | cleaning up these problems." |
| 1770 | (interactive "r") |
| 1771 | (setq force (or current-prefix-arg force)) |
| 1772 | (save-excursion |
| 1773 | (save-match-data ;FIXME: Why? |
| 1774 | (let* ((has-bogus nil) |
| 1775 | (rstart (min start end)) |
| 1776 | (rend (max start end)) |
| 1777 | (bogus-list |
| 1778 | (mapcar |
| 1779 | #'(lambda (option) |
| 1780 | (when force |
| 1781 | (add-to-list 'whitespace-style (car option))) |
| 1782 | (goto-char rstart) |
| 1783 | (let ((regexp |
| 1784 | (cond |
| 1785 | ((eq (car option) 'indentation) |
| 1786 | (whitespace-indentation-regexp)) |
| 1787 | ((eq (car option) 'indentation::tab) |
| 1788 | (whitespace-indentation-regexp 'tab)) |
| 1789 | ((eq (car option) 'indentation::space) |
| 1790 | (whitespace-indentation-regexp 'space)) |
| 1791 | ((eq (car option) 'space-after-tab) |
| 1792 | (whitespace-space-after-tab-regexp)) |
| 1793 | ((eq (car option) 'space-after-tab::tab) |
| 1794 | (whitespace-space-after-tab-regexp 'tab)) |
| 1795 | ((eq (car option) 'space-after-tab::space) |
| 1796 | (whitespace-space-after-tab-regexp 'space)) |
| 1797 | (t |
| 1798 | (cdr option))))) |
| 1799 | (and (re-search-forward regexp rend t) |
| 1800 | (setq has-bogus t)))) |
| 1801 | whitespace-report-list))) |
| 1802 | (when (pcase report-if-bogus (`nil t) (`never nil) (_ has-bogus)) |
| 1803 | (whitespace-kill-buffer whitespace-report-buffer-name) |
| 1804 | ;; `whitespace-indent-tabs-mode' is local to current buffer |
| 1805 | ;; `whitespace-tab-width' is local to current buffer |
| 1806 | (let ((ws-indent-tabs-mode whitespace-indent-tabs-mode) |
| 1807 | (ws-tab-width whitespace-tab-width)) |
| 1808 | (with-current-buffer (get-buffer-create |
| 1809 | whitespace-report-buffer-name) |
| 1810 | (erase-buffer) |
| 1811 | (insert (if ws-indent-tabs-mode |
| 1812 | (car whitespace-report-text) |
| 1813 | (cdr whitespace-report-text))) |
| 1814 | (goto-char (point-min)) |
| 1815 | (forward-line 3) |
| 1816 | (dolist (option whitespace-report-list) |
| 1817 | (forward-line 1) |
| 1818 | (whitespace-mark-x |
| 1819 | 27 (memq (car option) whitespace-style)) |
| 1820 | (whitespace-mark-x 7 (car bogus-list)) |
| 1821 | (setq bogus-list (cdr bogus-list))) |
| 1822 | (forward-line 1) |
| 1823 | (whitespace-insert-value ws-indent-tabs-mode) |
| 1824 | (whitespace-insert-value ws-tab-width) |
| 1825 | (when has-bogus |
| 1826 | (goto-char (point-max)) |
| 1827 | (insert " Type `M-x whitespace-cleanup'" |
| 1828 | " to cleanup the buffer.\n\n" |
| 1829 | " Type `M-x whitespace-cleanup-region'" |
| 1830 | " to cleanup a region.\n\n")) |
| 1831 | (whitespace-display-window (current-buffer))))) |
| 1832 | has-bogus)))) |
| 1833 | |
| 1834 | \f |
| 1835 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
| 1836 | ;;;; Internal functions |
| 1837 | |
| 1838 | |
| 1839 | (defvar whitespace-font-lock-keywords nil |
| 1840 | "Used to save the value `whitespace-color-on' adds to `font-lock-keywords'.") |
| 1841 | |
| 1842 | |
| 1843 | (defconst whitespace-help-text |
| 1844 | "\ |
| 1845 | Whitespace Toggle Options | scroll up : SPC or > | |
| 1846 | | scroll down: M-SPC or < | |
| 1847 | FACES \\__________________________/ |
| 1848 | [] f - toggle face visualization |
| 1849 | [] t - toggle TAB visualization |
| 1850 | [] s - toggle SPACE and HARD SPACE visualization |
| 1851 | [] r - toggle trailing blanks visualization |
| 1852 | [] l - toggle \"long lines\" visualization |
| 1853 | [] L - toggle \"long lines\" tail visualization |
| 1854 | [] n - toggle NEWLINE visualization |
| 1855 | [] e - toggle empty line at bob and/or eob visualization |
| 1856 | [] C-i - toggle indentation SPACEs visualization (via `indent-tabs-mode') |
| 1857 | [] I - toggle indentation SPACEs visualization |
| 1858 | [] i - toggle indentation TABs visualization |
| 1859 | [] C-a - toggle SPACEs after TAB visualization (via `indent-tabs-mode') |
| 1860 | [] A - toggle SPACEs after TAB: SPACEs visualization |
| 1861 | [] a - toggle SPACEs after TAB: TABs visualization |
| 1862 | [] C-b - toggle SPACEs before TAB visualization (via `indent-tabs-mode') |
| 1863 | [] B - toggle SPACEs before TAB: SPACEs visualization |
| 1864 | [] b - toggle SPACEs before TAB: TABs visualization |
| 1865 | |
| 1866 | DISPLAY TABLE |
| 1867 | [] T - toggle TAB visualization |
| 1868 | [] S - toggle SPACE and HARD SPACE visualization |
| 1869 | [] N - toggle NEWLINE visualization |
| 1870 | |
| 1871 | x - restore `whitespace-style' value |
| 1872 | |
| 1873 | ? - display this text\n\n" |
| 1874 | "Text for whitespace toggle options.") |
| 1875 | |
| 1876 | |
| 1877 | (defconst whitespace-help-buffer-name "*Whitespace Toggle Options*" |
| 1878 | "The buffer name for whitespace toggle options.") |
| 1879 | |
| 1880 | |
| 1881 | (defun whitespace-insert-value (value) |
| 1882 | "Insert VALUE at column 20 of next line." |
| 1883 | (forward-line 1) |
| 1884 | (move-to-column 20 t) |
| 1885 | (insert (format "%s" value))) |
| 1886 | |
| 1887 | |
| 1888 | (defun whitespace-mark-x (nchars condition) |
| 1889 | "Insert the mark ('X' or ' ') after NCHARS depending on CONDITION." |
| 1890 | (forward-char nchars) |
| 1891 | (insert (if condition "X" " "))) |
| 1892 | |
| 1893 | |
| 1894 | (defun whitespace-insert-option-mark (the-list the-value) |
| 1895 | "Insert the option mark ('X' or ' ') in toggle options buffer." |
| 1896 | (goto-char (point-min)) |
| 1897 | (forward-line 2) |
| 1898 | (dolist (sym the-list) |
| 1899 | (if (eq sym 'help-newline) |
| 1900 | (forward-line 2) |
| 1901 | (forward-line 1) |
| 1902 | (whitespace-mark-x 2 (memq sym the-value))))) |
| 1903 | |
| 1904 | |
| 1905 | (defun whitespace-help-on (style) |
| 1906 | "Display the whitespace toggle options." |
| 1907 | (unless (get-buffer whitespace-help-buffer-name) |
| 1908 | (delete-other-windows) |
| 1909 | (let ((buffer (get-buffer-create whitespace-help-buffer-name))) |
| 1910 | (with-current-buffer buffer |
| 1911 | (erase-buffer) |
| 1912 | (insert whitespace-help-text) |
| 1913 | (whitespace-insert-option-mark |
| 1914 | whitespace-style-value-list style) |
| 1915 | (whitespace-display-window buffer))))) |
| 1916 | |
| 1917 | |
| 1918 | (defun whitespace-display-window (buffer) |
| 1919 | "Display BUFFER in a new window." |
| 1920 | (goto-char (point-min)) |
| 1921 | (set-buffer-modified-p nil) |
| 1922 | (when (< (window-height) (* 2 window-min-height)) |
| 1923 | (kill-buffer buffer) |
| 1924 | (error "Window height is too small; \ |
| 1925 | can't split window to display whitespace toggle options")) |
| 1926 | (let ((win (split-window))) |
| 1927 | (set-window-buffer win buffer) |
| 1928 | (shrink-window-if-larger-than-buffer win))) |
| 1929 | |
| 1930 | |
| 1931 | (defun whitespace-kill-buffer (buffer-name) |
| 1932 | "Kill buffer BUFFER-NAME and windows related with it." |
| 1933 | (let ((buffer (get-buffer buffer-name))) |
| 1934 | (when buffer |
| 1935 | (delete-windows-on buffer) |
| 1936 | (kill-buffer buffer)))) |
| 1937 | |
| 1938 | |
| 1939 | (defun whitespace-help-off () |
| 1940 | "Remove the buffer and window of the whitespace toggle options." |
| 1941 | (whitespace-kill-buffer whitespace-help-buffer-name)) |
| 1942 | |
| 1943 | |
| 1944 | (defun whitespace-help-scroll (&optional up) |
| 1945 | "Scroll help window, if it exists. |
| 1946 | |
| 1947 | If UP is non-nil, scroll up; otherwise, scroll down." |
| 1948 | (condition-case nil |
| 1949 | (let ((buffer (get-buffer whitespace-help-buffer-name))) |
| 1950 | (if buffer |
| 1951 | (with-selected-window (get-buffer-window buffer) |
| 1952 | (if up |
| 1953 | (scroll-up 3) |
| 1954 | (scroll-down 3))) |
| 1955 | (ding))) |
| 1956 | ;; handler |
| 1957 | ((error) |
| 1958 | ;; just ignore error |
| 1959 | ))) |
| 1960 | |
| 1961 | |
| 1962 | (defun whitespace-interactive-char (local-p) |
| 1963 | "Interactive function to read a char and return a symbol. |
| 1964 | |
| 1965 | If LOCAL-P is non-nil, it uses a local context; otherwise, it |
| 1966 | uses a global context. |
| 1967 | |
| 1968 | It accepts one of the following chars: |
| 1969 | |
| 1970 | CHAR MEANING |
| 1971 | (VIA FACES) |
| 1972 | f toggle face visualization |
| 1973 | t toggle TAB visualization |
| 1974 | s toggle SPACE and HARD SPACE visualization |
| 1975 | r toggle trailing blanks visualization |
| 1976 | l toggle \"long lines\" visualization |
| 1977 | L toggle \"long lines\" tail visualization |
| 1978 | n toggle NEWLINE visualization |
| 1979 | e toggle empty line at bob and/or eob visualization |
| 1980 | C-i toggle indentation SPACEs visualization (via `indent-tabs-mode') |
| 1981 | I toggle indentation SPACEs visualization |
| 1982 | i toggle indentation TABs visualization |
| 1983 | C-a toggle SPACEs after TAB visualization (via `indent-tabs-mode') |
| 1984 | A toggle SPACEs after TAB: SPACEs visualization |
| 1985 | a toggle SPACEs after TAB: TABs visualization |
| 1986 | C-b toggle SPACEs before TAB visualization (via `indent-tabs-mode') |
| 1987 | B toggle SPACEs before TAB: SPACEs visualization |
| 1988 | b toggle SPACEs before TAB: TABs visualization |
| 1989 | |
| 1990 | (VIA DISPLAY TABLE) |
| 1991 | T toggle TAB visualization |
| 1992 | S toggle SPACE and HARD SPACE visualization |
| 1993 | N toggle NEWLINE visualization |
| 1994 | |
| 1995 | x restore `whitespace-style' value |
| 1996 | ? display brief help |
| 1997 | |
| 1998 | See also `whitespace-toggle-option-alist'." |
| 1999 | (let* ((is-off (not (if local-p |
| 2000 | whitespace-mode |
| 2001 | global-whitespace-mode))) |
| 2002 | (style (cond (is-off whitespace-style) ; use default value |
| 2003 | (local-p whitespace-active-style) |
| 2004 | (t whitespace-toggle-style))) |
| 2005 | (prompt |
| 2006 | (format "Whitespace Toggle %s (type ? for further options)-" |
| 2007 | (if local-p "Local" "Global"))) |
| 2008 | ch sym) |
| 2009 | ;; read a valid option and get the corresponding symbol |
| 2010 | (save-window-excursion |
| 2011 | (condition-case data |
| 2012 | (progn |
| 2013 | (while |
| 2014 | ;; while condition |
| 2015 | (progn |
| 2016 | (setq ch (read-char prompt)) |
| 2017 | (not |
| 2018 | (setq sym |
| 2019 | (cdr |
| 2020 | (assq ch whitespace-toggle-option-alist))))) |
| 2021 | ;; while body |
| 2022 | (cond |
| 2023 | ((eq ch ?\?) (whitespace-help-on style)) |
| 2024 | ((eq ch ?\ ) (whitespace-help-scroll t)) |
| 2025 | ((eq ch ?\M- ) (whitespace-help-scroll)) |
| 2026 | ((eq ch ?>) (whitespace-help-scroll t)) |
| 2027 | ((eq ch ?<) (whitespace-help-scroll)) |
| 2028 | (t (ding)))) |
| 2029 | (whitespace-help-off) |
| 2030 | (message " ")) ; clean echo area |
| 2031 | ;; handler |
| 2032 | ((quit error) |
| 2033 | (whitespace-help-off) |
| 2034 | (error (error-message-string data))))) |
| 2035 | (list sym))) ; return the appropriate symbol |
| 2036 | |
| 2037 | |
| 2038 | (defun whitespace-toggle-list (local-p arg the-list) |
| 2039 | "Toggle options in THE-LIST based on list ARG. |
| 2040 | |
| 2041 | If LOCAL-P is non-nil, it uses a local context; otherwise, it |
| 2042 | uses a global context. |
| 2043 | |
| 2044 | ARG is a list of options to be toggled. |
| 2045 | |
| 2046 | THE-LIST is a list of options. This list will be toggled and the |
| 2047 | resultant list will be returned." |
| 2048 | (unless (if local-p whitespace-mode global-whitespace-mode) |
| 2049 | (setq the-list whitespace-style)) |
| 2050 | (setq the-list (copy-sequence the-list)) ; keep original list |
| 2051 | (dolist (sym (if (listp arg) arg (list arg))) |
| 2052 | (cond |
| 2053 | ;; ignore help value |
| 2054 | ((eq sym 'help-newline)) |
| 2055 | ;; restore default values |
| 2056 | ((eq sym 'whitespace-style) |
| 2057 | (setq the-list whitespace-style)) |
| 2058 | ;; toggle valid values |
| 2059 | ((memq sym whitespace-style-value-list) |
| 2060 | (setq the-list (if (memq sym the-list) |
| 2061 | (delq sym the-list) |
| 2062 | (cons sym the-list)))))) |
| 2063 | the-list) |
| 2064 | |
| 2065 | |
| 2066 | (defvar whitespace-display-table nil |
| 2067 | "Used to save a local display table.") |
| 2068 | |
| 2069 | (defvar whitespace-display-table-was-local nil |
| 2070 | "Used to remember whether a buffer initially had a local display table.") |
| 2071 | |
| 2072 | (defun whitespace-turn-on () |
| 2073 | "Turn on whitespace visualization." |
| 2074 | ;; prepare local hooks |
| 2075 | (add-hook 'write-file-functions 'whitespace-write-file-hook nil t) |
| 2076 | ;; create whitespace local buffer environment |
| 2077 | (set (make-local-variable 'whitespace-font-lock-keywords) nil) |
| 2078 | (set (make-local-variable 'whitespace-display-table) nil) |
| 2079 | (set (make-local-variable 'whitespace-display-table-was-local) nil) |
| 2080 | (set (make-local-variable 'whitespace-active-style) |
| 2081 | (if (listp whitespace-style) |
| 2082 | whitespace-style |
| 2083 | (list whitespace-style))) |
| 2084 | (whitespace-ensure-local-variables) |
| 2085 | ;; turn on whitespace |
| 2086 | (when whitespace-active-style |
| 2087 | (whitespace-color-on) |
| 2088 | (whitespace-display-char-on))) |
| 2089 | |
| 2090 | |
| 2091 | (defun whitespace-turn-off () |
| 2092 | "Turn off whitespace visualization." |
| 2093 | (remove-hook 'write-file-functions 'whitespace-write-file-hook t) |
| 2094 | (when whitespace-active-style |
| 2095 | (whitespace-color-off) |
| 2096 | (whitespace-display-char-off))) |
| 2097 | |
| 2098 | |
| 2099 | (defun whitespace-style-face-p () |
| 2100 | "Return t if there is some visualization via face." |
| 2101 | (and (memq 'face whitespace-active-style) |
| 2102 | (or (memq 'tabs whitespace-active-style) |
| 2103 | (memq 'spaces whitespace-active-style) |
| 2104 | (memq 'trailing whitespace-active-style) |
| 2105 | (memq 'lines whitespace-active-style) |
| 2106 | (memq 'lines-tail whitespace-active-style) |
| 2107 | (memq 'newline whitespace-active-style) |
| 2108 | (memq 'empty whitespace-active-style) |
| 2109 | (memq 'indentation whitespace-active-style) |
| 2110 | (memq 'indentation::tab whitespace-active-style) |
| 2111 | (memq 'indentation::space whitespace-active-style) |
| 2112 | (memq 'space-after-tab whitespace-active-style) |
| 2113 | (memq 'space-after-tab::tab whitespace-active-style) |
| 2114 | (memq 'space-after-tab::space whitespace-active-style) |
| 2115 | (memq 'space-before-tab whitespace-active-style) |
| 2116 | (memq 'space-before-tab::tab whitespace-active-style) |
| 2117 | (memq 'space-before-tab::space whitespace-active-style)))) |
| 2118 | |
| 2119 | |
| 2120 | (defun whitespace-color-on () |
| 2121 | "Turn on color visualization." |
| 2122 | (when (whitespace-style-face-p) |
| 2123 | ;; save current point and refontify when necessary |
| 2124 | (set (make-local-variable 'whitespace-point) |
| 2125 | (point)) |
| 2126 | (setq whitespace-point--used |
| 2127 | (let ((ol (make-overlay (point) (point) nil nil t))) |
| 2128 | (delete-overlay ol) ol)) |
| 2129 | (set (make-local-variable 'whitespace-font-lock-refontify) |
| 2130 | 0) |
| 2131 | (set (make-local-variable 'whitespace-bob-marker) |
| 2132 | (point-min-marker)) |
| 2133 | (set (make-local-variable 'whitespace-eob-marker) |
| 2134 | (point-max-marker)) |
| 2135 | (set (make-local-variable 'whitespace-buffer-changed) |
| 2136 | nil) |
| 2137 | (add-hook 'post-command-hook #'whitespace-post-command-hook nil t) |
| 2138 | (add-hook 'before-change-functions #'whitespace-buffer-changed nil t) |
| 2139 | ;; Add whitespace-mode color into font lock. |
| 2140 | (setq |
| 2141 | whitespace-font-lock-keywords |
| 2142 | `( |
| 2143 | (whitespace-point--flush-used) |
| 2144 | ,@(when (memq 'spaces whitespace-active-style) |
| 2145 | ;; Show SPACEs. |
| 2146 | `((,whitespace-space-regexp 1 whitespace-space t) |
| 2147 | ;; Show HARD SPACEs. |
| 2148 | (,whitespace-hspace-regexp 1 whitespace-hspace t))) |
| 2149 | ,@(when (memq 'tabs whitespace-active-style) |
| 2150 | ;; Show TABs. |
| 2151 | `((,whitespace-tab-regexp 1 whitespace-tab t))) |
| 2152 | ,@(when (memq 'trailing whitespace-active-style) |
| 2153 | ;; Show trailing blanks. |
| 2154 | `((,#'whitespace-trailing-regexp 1 whitespace-trailing t))) |
| 2155 | ,@(when (or (memq 'lines whitespace-active-style) |
| 2156 | (memq 'lines-tail whitespace-active-style)) |
| 2157 | ;; Show "long" lines. |
| 2158 | `((,(let ((line-column (or whitespace-line-column fill-column))) |
| 2159 | (format |
| 2160 | "^\\([^\t\n]\\{%s\\}\\|[^\t\n]\\{0,%s\\}\t\\)\\{%d\\}%s\\(.+\\)$" |
| 2161 | whitespace-tab-width |
| 2162 | (1- whitespace-tab-width) |
| 2163 | (/ line-column whitespace-tab-width) |
| 2164 | (let ((rem (% line-column whitespace-tab-width))) |
| 2165 | (if (zerop rem) |
| 2166 | "" |
| 2167 | (format ".\\{%d\\}" rem))))) |
| 2168 | ,(if (memq 'lines whitespace-active-style) |
| 2169 | 0 ; whole line |
| 2170 | 2) ; line tail |
| 2171 | whitespace-line prepend))) |
| 2172 | ,@(when (or (memq 'space-before-tab whitespace-active-style) |
| 2173 | (memq 'space-before-tab::tab whitespace-active-style) |
| 2174 | (memq 'space-before-tab::space whitespace-active-style)) |
| 2175 | `((,whitespace-space-before-tab-regexp |
| 2176 | ,(cond |
| 2177 | ((memq 'space-before-tab whitespace-active-style) |
| 2178 | ;; Show SPACEs before TAB (indent-tabs-mode). |
| 2179 | (if whitespace-indent-tabs-mode 1 2)) |
| 2180 | ((memq 'space-before-tab::tab whitespace-active-style) |
| 2181 | 1) |
| 2182 | ((memq 'space-before-tab::space whitespace-active-style) |
| 2183 | 2)) |
| 2184 | whitespace-space-before-tab t))) |
| 2185 | ,@(when (or (memq 'indentation whitespace-active-style) |
| 2186 | (memq 'indentation::tab whitespace-active-style) |
| 2187 | (memq 'indentation::space whitespace-active-style)) |
| 2188 | `((,(cond |
| 2189 | ((memq 'indentation whitespace-active-style) |
| 2190 | ;; Show indentation SPACEs (indent-tabs-mode). |
| 2191 | (whitespace-indentation-regexp)) |
| 2192 | ((memq 'indentation::tab whitespace-active-style) |
| 2193 | ;; Show indentation SPACEs (SPACEs). |
| 2194 | (whitespace-indentation-regexp 'tab)) |
| 2195 | ((memq 'indentation::space whitespace-active-style) |
| 2196 | ;; Show indentation SPACEs (TABs). |
| 2197 | (whitespace-indentation-regexp 'space))) |
| 2198 | 1 whitespace-indentation t))) |
| 2199 | ,@(when (memq 'empty whitespace-active-style) |
| 2200 | ;; Show empty lines at beginning of buffer. |
| 2201 | `((,#'whitespace-empty-at-bob-regexp |
| 2202 | 1 whitespace-empty t) |
| 2203 | ;; Show empty lines at end of buffer. |
| 2204 | (,#'whitespace-empty-at-eob-regexp |
| 2205 | 1 whitespace-empty t))) |
| 2206 | ,@(when (or (memq 'space-after-tab whitespace-active-style) |
| 2207 | (memq 'space-after-tab::tab whitespace-active-style) |
| 2208 | (memq 'space-after-tab::space whitespace-active-style)) |
| 2209 | `((,(cond |
| 2210 | ((memq 'space-after-tab whitespace-active-style) |
| 2211 | ;; Show SPACEs after TAB (indent-tabs-mode). |
| 2212 | (whitespace-space-after-tab-regexp)) |
| 2213 | ((memq 'space-after-tab::tab whitespace-active-style) |
| 2214 | ;; Show SPACEs after TAB (SPACEs). |
| 2215 | (whitespace-space-after-tab-regexp 'tab)) |
| 2216 | ((memq 'space-after-tab::space whitespace-active-style) |
| 2217 | ;; Show SPACEs after TAB (TABs). |
| 2218 | (whitespace-space-after-tab-regexp 'space))) |
| 2219 | 1 whitespace-space-after-tab t))))) |
| 2220 | (font-lock-add-keywords nil whitespace-font-lock-keywords t) |
| 2221 | (font-lock-flush))) |
| 2222 | |
| 2223 | |
| 2224 | (defun whitespace-color-off () |
| 2225 | "Turn off color visualization." |
| 2226 | ;; turn off font lock |
| 2227 | (kill-local-variable 'whitespace-point--used) |
| 2228 | (when (whitespace-style-face-p) |
| 2229 | (remove-hook 'post-command-hook #'whitespace-post-command-hook t) |
| 2230 | (remove-hook 'before-change-functions #'whitespace-buffer-changed t) |
| 2231 | (font-lock-remove-keywords nil whitespace-font-lock-keywords) |
| 2232 | (font-lock-flush))) |
| 2233 | |
| 2234 | (defun whitespace-point--used (start end) |
| 2235 | (let ((ostart (overlay-start whitespace-point--used))) |
| 2236 | (if ostart |
| 2237 | (move-overlay whitespace-point--used |
| 2238 | (min start ostart) |
| 2239 | (max end (overlay-end whitespace-point--used))) |
| 2240 | (move-overlay whitespace-point--used start end)))) |
| 2241 | |
| 2242 | (defun whitespace-point--flush-used (limit) |
| 2243 | (let ((ostart (overlay-start whitespace-point--used))) |
| 2244 | ;; Strip parts of whitespace-point--used we're about to refresh. |
| 2245 | (when ostart |
| 2246 | (let ((oend (overlay-end whitespace-point--used))) |
| 2247 | (if (<= (point) ostart) |
| 2248 | (if (<= oend limit) |
| 2249 | (delete-overlay whitespace-point--used) |
| 2250 | (move-overlay whitespace-point--used limit oend))) |
| 2251 | (if (<= oend limit) |
| 2252 | (move-overlay whitespace-point--used ostart (point)))))) |
| 2253 | nil) |
| 2254 | |
| 2255 | (defun whitespace-trailing-regexp (limit) |
| 2256 | "Match trailing spaces which do not contain the point at end of line." |
| 2257 | (let ((status t)) |
| 2258 | (while (if (re-search-forward whitespace-trailing-regexp limit t) |
| 2259 | (when (= whitespace-point (match-end 1)) ; Loop if point at eol. |
| 2260 | (whitespace-point--used (match-beginning 0) (match-end 0)) |
| 2261 | t) |
| 2262 | (setq status nil))) ;; end of buffer |
| 2263 | status)) |
| 2264 | |
| 2265 | |
| 2266 | (defun whitespace-empty-at-bob-regexp (limit) |
| 2267 | "Match spaces at beginning of buffer which do not contain the point at \ |
| 2268 | beginning of buffer." |
| 2269 | (let ((b (point)) |
| 2270 | r) |
| 2271 | (cond |
| 2272 | ;; at bob |
| 2273 | ((= b 1) |
| 2274 | (setq r (and (looking-at whitespace-empty-at-bob-regexp) |
| 2275 | (or (/= whitespace-point 1) |
| 2276 | (progn (whitespace-point--used (match-beginning 0) |
| 2277 | (match-end 0)) |
| 2278 | nil)))) |
| 2279 | (set-marker whitespace-bob-marker (if r (match-end 1) b))) |
| 2280 | ;; inside bob empty region |
| 2281 | ((<= limit whitespace-bob-marker) |
| 2282 | (setq r (looking-at whitespace-empty-at-bob-regexp)) |
| 2283 | (if r |
| 2284 | (when (< (match-end 1) limit) |
| 2285 | (set-marker whitespace-bob-marker (match-end 1))) |
| 2286 | (set-marker whitespace-bob-marker b))) |
| 2287 | ;; intersection with end of bob empty region |
| 2288 | ((<= b whitespace-bob-marker) |
| 2289 | (setq r (looking-at whitespace-empty-at-bob-regexp)) |
| 2290 | (set-marker whitespace-bob-marker (if r (match-end 1) b))) |
| 2291 | ;; it is not inside bob empty region |
| 2292 | (t |
| 2293 | (setq r nil))) |
| 2294 | ;; move to end of matching |
| 2295 | (and r (goto-char (match-end 1))) |
| 2296 | r)) |
| 2297 | |
| 2298 | |
| 2299 | (defsubst whitespace-looking-back (regexp limit) |
| 2300 | (save-excursion |
| 2301 | (when (/= 0 (skip-chars-backward " \t\n" limit)) |
| 2302 | (unless (bolp) |
| 2303 | (forward-line 1)) |
| 2304 | (looking-at regexp)))) |
| 2305 | |
| 2306 | |
| 2307 | (defun whitespace-empty-at-eob-regexp (limit) |
| 2308 | "Match spaces at end of buffer which do not contain the point at end of \ |
| 2309 | buffer." |
| 2310 | (let ((b (point)) |
| 2311 | (e (1+ (buffer-size))) |
| 2312 | r) |
| 2313 | (cond |
| 2314 | ;; at eob |
| 2315 | ((= limit e) |
| 2316 | (goto-char limit) |
| 2317 | (setq r (whitespace-looking-back whitespace-empty-at-eob-regexp b)) |
| 2318 | (when (and r (= whitespace-point e)) |
| 2319 | (setq r nil) |
| 2320 | (whitespace-point--used (match-beginning 0) (match-end 0))) |
| 2321 | (if r |
| 2322 | (set-marker whitespace-eob-marker (match-beginning 1)) |
| 2323 | (set-marker whitespace-eob-marker limit) |
| 2324 | (goto-char b))) ; return back to initial position |
| 2325 | ;; inside eob empty region |
| 2326 | ((>= b whitespace-eob-marker) |
| 2327 | (goto-char limit) |
| 2328 | (setq r (whitespace-looking-back whitespace-empty-at-eob-regexp b)) |
| 2329 | (if r |
| 2330 | (when (> (match-beginning 1) b) |
| 2331 | (set-marker whitespace-eob-marker (match-beginning 1))) |
| 2332 | (set-marker whitespace-eob-marker limit) |
| 2333 | (goto-char b))) ; return back to initial position |
| 2334 | ;; intersection with beginning of eob empty region |
| 2335 | ((>= limit whitespace-eob-marker) |
| 2336 | (goto-char limit) |
| 2337 | (setq r (whitespace-looking-back whitespace-empty-at-eob-regexp b)) |
| 2338 | (if r |
| 2339 | (set-marker whitespace-eob-marker (match-beginning 1)) |
| 2340 | (set-marker whitespace-eob-marker limit) |
| 2341 | (goto-char b))) ; return back to initial position |
| 2342 | ;; it is not inside eob empty region |
| 2343 | (t |
| 2344 | (setq r nil))) |
| 2345 | r)) |
| 2346 | |
| 2347 | |
| 2348 | (defun whitespace-buffer-changed (_beg _end) |
| 2349 | "Set `whitespace-buffer-changed' variable to t." |
| 2350 | (setq whitespace-buffer-changed t)) |
| 2351 | |
| 2352 | |
| 2353 | (defun whitespace-post-command-hook () |
| 2354 | "Save current point into `whitespace-point' variable. |
| 2355 | Also refontify when necessary." |
| 2356 | (unless (and (eq whitespace-point (point)) |
| 2357 | (not whitespace-buffer-changed)) |
| 2358 | (setq whitespace-point (point)) ; current point position |
| 2359 | (let ((refontify |
| 2360 | (cond |
| 2361 | ;; It is at end of buffer (eob). |
| 2362 | ((= whitespace-point (1+ (buffer-size))) |
| 2363 | (when (whitespace-looking-back whitespace-empty-at-eob-regexp |
| 2364 | nil) |
| 2365 | (match-beginning 0))) |
| 2366 | ;; It is at end of line ... |
| 2367 | ((and (eolp) |
| 2368 | ;; ... with trailing SPACE or TAB |
| 2369 | (or (memq (preceding-char) '(?\s ?\t)))) |
| 2370 | (line-beginning-position)) |
| 2371 | ;; It is at beginning of buffer (bob). |
| 2372 | ((and (= whitespace-point 1) |
| 2373 | (looking-at whitespace-empty-at-bob-regexp)) |
| 2374 | (match-end 0)))) |
| 2375 | (ostart (overlay-start whitespace-point--used))) |
| 2376 | (cond |
| 2377 | ((not refontify) |
| 2378 | ;; New point does not affect highlighting: just refresh the |
| 2379 | ;; highlighting of old point, if needed. |
| 2380 | (when ostart |
| 2381 | (font-lock-flush ostart |
| 2382 | (overlay-end whitespace-point--used)) |
| 2383 | (delete-overlay whitespace-point--used))) |
| 2384 | ((not ostart) |
| 2385 | ;; Old point did not affect highlighting, but new one does: refresh the |
| 2386 | ;; highlighting of new point. |
| 2387 | (font-lock-flush (min refontify (point)) (max refontify (point)))) |
| 2388 | ((save-excursion |
| 2389 | (goto-char ostart) |
| 2390 | (setq ostart (line-beginning-position)) |
| 2391 | (and (<= ostart (max refontify (point))) |
| 2392 | (progn |
| 2393 | (goto-char (overlay-end whitespace-point--used)) |
| 2394 | (let ((oend (line-beginning-position 2))) |
| 2395 | (<= (min refontify (point)) oend))))) |
| 2396 | ;; The old point highlighting and the new point highlighting |
| 2397 | ;; cover a contiguous region: do a single refresh. |
| 2398 | (font-lock-flush (min refontify (point) ostart) |
| 2399 | (max refontify (point) |
| 2400 | (overlay-end whitespace-point--used))) |
| 2401 | (delete-overlay whitespace-point--used)) |
| 2402 | (t |
| 2403 | (font-lock-flush (min refontify (point)) |
| 2404 | (max refontify (point))) |
| 2405 | (font-lock-flush ostart (overlay-end whitespace-point--used)) |
| 2406 | (delete-overlay whitespace-point--used)))))) |
| 2407 | |
| 2408 | \f |
| 2409 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
| 2410 | ;;;; Hacked from visws.el (Miles Bader <miles@gnu.org>) |
| 2411 | |
| 2412 | |
| 2413 | (defun whitespace-style-mark-p () |
| 2414 | "Return t if there is some visualization via display table." |
| 2415 | (or (memq 'tab-mark whitespace-active-style) |
| 2416 | (memq 'space-mark whitespace-active-style) |
| 2417 | (memq 'newline-mark whitespace-active-style))) |
| 2418 | |
| 2419 | |
| 2420 | (defsubst whitespace-char-valid-p (char) |
| 2421 | ;; This check should be improved!!! |
| 2422 | (or (< char 256) |
| 2423 | (characterp char))) |
| 2424 | |
| 2425 | |
| 2426 | (defun whitespace-display-vector-p (vec) |
| 2427 | "Return true if every character in vector VEC can be displayed." |
| 2428 | (let ((i (length vec))) |
| 2429 | (when (> i 0) |
| 2430 | (while (and (>= (setq i (1- i)) 0) |
| 2431 | (whitespace-char-valid-p (aref vec i)))) |
| 2432 | (< i 0)))) |
| 2433 | |
| 2434 | |
| 2435 | (defun whitespace-display-char-on () |
| 2436 | "Turn on character display mapping." |
| 2437 | (when (and whitespace-display-mappings |
| 2438 | (whitespace-style-mark-p)) |
| 2439 | (let (vecs vec) |
| 2440 | ;; Remember whether a buffer has a local display table. |
| 2441 | (unless whitespace-display-table-was-local |
| 2442 | (setq whitespace-display-table-was-local t |
| 2443 | whitespace-display-table |
| 2444 | (copy-sequence buffer-display-table)) |
| 2445 | ;; Assure `buffer-display-table' is unique |
| 2446 | ;; when two or more windows are visible. |
| 2447 | (setq buffer-display-table |
| 2448 | (copy-sequence buffer-display-table))) |
| 2449 | (unless buffer-display-table |
| 2450 | (setq buffer-display-table (make-display-table))) |
| 2451 | (dolist (entry whitespace-display-mappings) |
| 2452 | ;; check if it is to display this mark |
| 2453 | (when (memq (car entry) whitespace-style) |
| 2454 | ;; Get a displayable mapping. |
| 2455 | (setq vecs (cddr entry)) |
| 2456 | (while (and vecs |
| 2457 | (not (whitespace-display-vector-p (car vecs)))) |
| 2458 | (setq vecs (cdr vecs))) |
| 2459 | ;; Display a valid mapping. |
| 2460 | (when vecs |
| 2461 | (setq vec (copy-sequence (car vecs))) |
| 2462 | ;; NEWLINE char |
| 2463 | (when (and (eq (cadr entry) ?\n) |
| 2464 | (memq 'newline whitespace-active-style)) |
| 2465 | ;; Only insert face bits on NEWLINE char mapping to avoid |
| 2466 | ;; obstruction of other faces like TABs and (HARD) SPACEs |
| 2467 | ;; faces, font-lock faces, etc. |
| 2468 | (dotimes (i (length vec)) |
| 2469 | (or (eq (aref vec i) ?\n) |
| 2470 | (aset vec i |
| 2471 | (make-glyph-code (aref vec i) |
| 2472 | whitespace-newline))))) |
| 2473 | ;; Display mapping |
| 2474 | (aset buffer-display-table (cadr entry) vec))))))) |
| 2475 | |
| 2476 | |
| 2477 | (defun whitespace-display-char-off () |
| 2478 | "Turn off character display mapping." |
| 2479 | (and whitespace-display-mappings |
| 2480 | (whitespace-style-mark-p) |
| 2481 | whitespace-display-table-was-local |
| 2482 | (setq whitespace-display-table-was-local nil |
| 2483 | buffer-display-table whitespace-display-table))) |
| 2484 | |
| 2485 | \f |
| 2486 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
| 2487 | ;;;; Hook |
| 2488 | |
| 2489 | |
| 2490 | (defun whitespace-action-when-on () |
| 2491 | "Action to be taken always when local whitespace is turned on." |
| 2492 | (cond ((memq 'cleanup whitespace-action) |
| 2493 | (whitespace-cleanup)) |
| 2494 | ((memq 'report-on-bogus whitespace-action) |
| 2495 | (whitespace-report nil t)))) |
| 2496 | |
| 2497 | |
| 2498 | (defun whitespace-write-file-hook () |
| 2499 | "Action to be taken when buffer is written. |
| 2500 | It should be added buffer-locally to `write-file-functions'." |
| 2501 | (cond ((memq 'auto-cleanup whitespace-action) |
| 2502 | (whitespace-cleanup)) |
| 2503 | ((memq 'abort-on-bogus whitespace-action) |
| 2504 | (when (whitespace-report nil t) |
| 2505 | (error "Abort write due to whitespace problems in %s" |
| 2506 | (buffer-name))))) |
| 2507 | nil) ; continue hook processing |
| 2508 | |
| 2509 | |
| 2510 | (defun whitespace-warn-read-only (msg) |
| 2511 | "Warn if buffer is read-only." |
| 2512 | (when (memq 'warn-if-read-only whitespace-action) |
| 2513 | (message "Can't %s: %s is read-only" msg (buffer-name)))) |
| 2514 | |
| 2515 | \f |
| 2516 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
| 2517 | |
| 2518 | |
| 2519 | (defun whitespace-unload-function () |
| 2520 | "Unload the whitespace library." |
| 2521 | (global-whitespace-mode -1) |
| 2522 | ;; be sure all local whitespace mode is turned off |
| 2523 | (save-current-buffer |
| 2524 | (dolist (buf (buffer-list)) |
| 2525 | (set-buffer buf) |
| 2526 | (whitespace-mode -1))) |
| 2527 | nil) ; continue standard unloading |
| 2528 | |
| 2529 | |
| 2530 | (provide 'whitespace) |
| 2531 | |
| 2532 | |
| 2533 | (run-hooks 'whitespace-load-hook) |
| 2534 | |
| 2535 | |
| 2536 | ;;; whitespace.el ends here |