Mercurial > hg > xemacs-beta
annotate lisp/simple.el @ 5767:4e69b24a2301
Disable ASLR on Mavericks.
| author | Marcus Crestani <crestani@informatik.uni-tuebingen.de> |
|---|---|
| date | Mon, 28 Oct 2013 16:03:53 +0100 |
| parents | 0eb4e96fd261 |
| children | 94a6b8fbd56e |
| rev | line source |
|---|---|
| 428 | 1 ;;; simple.el --- basic editing commands for XEmacs |
| 2 | |
| 3 ;; Copyright (C) 1985-7, 1993-5, 1997 Free Software Foundation, Inc. | |
| 4 ;; Copyright (C) 1995 Tinker Systems and INS Engineering Corp. | |
| 1261 | 5 ;; Copyright (C) 2000, 2001, 2002, 2003 Ben Wing. |
| 428 | 6 |
| 7 ;; Maintainer: XEmacs Development Team | |
| 8 ;; Keywords: lisp, extensions, internal, dumped | |
| 9 | |
| 10 ;; This file is part of XEmacs. | |
| 11 | |
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12 ;; XEmacs is free software: you can redistribute it and/or modify it |
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13 ;; under the terms of the GNU General Public License as published by the |
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14 ;; Free Software Foundation, either version 3 of the License, or (at your |
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15 ;; option) any later version. |
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16 |
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17 ;; XEmacs is distributed in the hope that it will be useful, but WITHOUT |
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18 ;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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19 ;; FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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20 ;; for more details. |
| 428 | 21 |
| 22 ;; You should have received a copy of the GNU General Public License | |
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23 ;; along with XEmacs. If not, see <http://www.gnu.org/licenses/>. |
| 428 | 24 |
| 25 ;;; Synched up with: FSF 19.34 [But not very closely]. | |
| 3000 | 26 ;;; Occasional synching to FSF 21.2 and FSF 22.0, as marked. Comment stuff |
| 27 ;;; also synched, and in newcomment.el. | |
| 428 | 28 |
| 29 ;;; Commentary: | |
| 30 | |
| 31 ;; This file is dumped with XEmacs. | |
| 32 | |
| 33 ;; A grab-bag of basic XEmacs commands not specifically related to some | |
| 34 ;; major mode or to file-handling. | |
| 35 | |
| 36 ;; Changes for zmacs-style active-regions: | |
| 37 ;; | |
| 38 ;; beginning-of-buffer, end-of-buffer, count-lines-region, | |
| 39 ;; count-lines-buffer, what-line, what-cursor-position, set-goal-column, | |
| 40 ;; set-fill-column, prefix-arg-internal, and line-move (which is used by | |
| 41 ;; next-line and previous-line) set zmacs-region-stays to t, so that they | |
| 42 ;; don't affect the current region-hilighting state. | |
| 43 ;; | |
| 44 ;; mark-whole-buffer, mark-word, exchange-point-and-mark, and | |
| 45 ;; set-mark-command (without an argument) call zmacs-activate-region. | |
| 46 ;; | |
| 47 ;; mark takes an optional arg like the new Fmark_marker() does. When | |
| 48 ;; the region is not active, mark returns nil unless the optional arg is true. | |
| 49 ;; | |
| 50 ;; push-mark, pop-mark, exchange-point-and-mark, and set-marker, and | |
| 51 ;; set-mark-command use (mark t) so that they can access the mark whether | |
| 52 ;; the region is active or not. | |
| 53 ;; | |
| 54 ;; shell-command, shell-command-on-region, yank, and yank-pop (which all | |
| 55 ;; push a mark) have been altered to call exchange-point-and-mark with an | |
| 56 ;; argument, meaning "don't activate the region". These commands only use | |
| 57 ;; exchange-point-and-mark to position the newly-pushed mark correctly, so | |
| 58 ;; this isn't a user-visible change. These functions have also been altered | |
| 59 ;; to use (mark t) for the same reason. | |
| 60 | |
| 502 | 61 ;; 97/3/14 Jareth Hein (jhod@po.iijnet.or.jp) added kinsoku processing |
| 62 ;; (support for filling of Asian text) into the fill code. This was | |
| 63 ;; ripped bleeding from Mule-2.3, and could probably use some feature | |
| 64 ;; additions (like additional wrap styles, etc) | |
| 428 | 65 |
| 66 ;; 97/06/11 Steve Baur (steve@xemacs.org) Convert use of | |
| 67 ;; (preceding|following)-char to char-(after|before). | |
| 68 | |
| 69 ;;; Code: | |
| 70 | |
| 71 (defgroup editing-basics nil | |
| 72 "Most basic editing variables." | |
| 73 :group 'editing) | |
| 74 | |
| 75 (defgroup killing nil | |
| 76 "Killing and yanking commands." | |
| 77 :group 'editing) | |
| 78 | |
| 79 (defgroup fill-comments nil | |
| 80 "Indenting and filling of comments." | |
| 81 :prefix "comment-" | |
| 82 :group 'fill) | |
| 83 | |
| 84 (defgroup paren-matching nil | |
| 85 "Highlight (un)matching of parens and expressions." | |
| 86 :prefix "paren-" | |
| 87 :group 'matching) | |
| 88 | |
| 89 (defgroup log-message nil | |
| 90 "Messages logging and display customizations." | |
| 91 :group 'minibuffer) | |
| 92 | |
| 93 (defgroup warnings nil | |
| 94 "Warnings customizations." | |
| 95 :group 'minibuffer) | |
| 96 | |
| 97 | |
| 98 (defcustom search-caps-disable-folding t | |
| 99 "*If non-nil, upper case chars disable case fold searching. | |
| 100 This does not apply to \"yanked\" strings." | |
| 101 :type 'boolean | |
| 102 :group 'editing-basics) | |
| 103 | |
| 104 ;; This is stolen (and slightly modified) from FSF emacs's | |
| 105 ;; `isearch-no-upper-case-p'. | |
| 106 (defun no-upper-case-p (string &optional regexp-flag) | |
| 107 "Return t if there are no upper case chars in STRING. | |
| 108 If REGEXP-FLAG is non-nil, disregard letters preceded by `\\' (but not `\\\\') | |
| 109 since they have special meaning in a regexp." | |
| 110 (let ((case-fold-search nil)) | |
| 444 | 111 (not (string-match (if regexp-flag |
| 428 | 112 "\\(^\\|\\\\\\\\\\|[^\\]\\)[A-Z]" |
| 113 "[A-Z]") | |
| 114 string)) | |
| 115 )) | |
| 116 | |
| 117 (defmacro with-search-caps-disable-folding (string regexp-flag &rest body) "\ | |
| 444 | 118 Eval BODY with `case-fold-search' let to nil if `search-caps-disable-folding' |
| 428 | 119 is non-nil, and if STRING (either a string or a regular expression according |
| 120 to REGEXP-FLAG) contains uppercase letters." | |
| 121 `(let ((case-fold-search | |
| 122 (if (and case-fold-search search-caps-disable-folding) | |
| 123 (no-upper-case-p ,string ,regexp-flag) | |
| 124 case-fold-search))) | |
| 125 ,@body)) | |
| 126 (put 'with-search-caps-disable-folding 'lisp-indent-function 2) | |
| 444 | 127 (put 'with-search-caps-disable-folding 'edebug-form-spec |
| 428 | 128 '(sexp sexp &rest form)) |
| 129 | |
| 444 | 130 (defmacro with-interactive-search-caps-disable-folding (string regexp-flag |
| 428 | 131 &rest body) |
| 132 "Same as `with-search-caps-disable-folding', but only in the case of a | |
| 133 function called interactively." | |
| 134 `(let ((case-fold-search | |
| 444 | 135 (if (and (interactive-p) |
| 428 | 136 case-fold-search search-caps-disable-folding) |
| 137 (no-upper-case-p ,string ,regexp-flag) | |
| 138 case-fold-search))) | |
| 139 ,@body)) | |
| 140 (put 'with-interactive-search-caps-disable-folding 'lisp-indent-function 2) | |
| 444 | 141 (put 'with-interactive-search-caps-disable-folding 'edebug-form-spec |
| 428 | 142 '(sexp sexp &rest form)) |
| 143 | |
| 444 | 144 (defun newline (&optional n) |
| 428 | 145 "Insert a newline, and move to left margin of the new line if it's blank. |
| 146 The newline is marked with the text-property `hard'. | |
| 444 | 147 With optional arg N, insert that many newlines. |
| 428 | 148 In Auto Fill mode, if no numeric arg, break the preceding line if it's long." |
| 149 (interactive "*P") | |
| 150 (barf-if-buffer-read-only nil (point)) | |
| 151 ;; Inserting a newline at the end of a line produces better redisplay in | |
| 152 ;; try_window_id than inserting at the beginning of a line, and the textual | |
| 153 ;; result is the same. So, if we're at beginning of line, pretend to be at | |
| 154 ;; the end of the previous line. | |
| 155 ;; #### Does this have any relevance in XEmacs? | |
| 156 (let ((flag (and (not (bobp)) | |
| 157 (bolp) | |
| 158 ;; Make sure the newline before point isn't intangible. | |
| 159 (not (get-char-property (1- (point)) 'intangible)) | |
| 160 ;; Make sure the newline before point isn't read-only. | |
| 161 (not (get-char-property (1- (point)) 'read-only)) | |
| 162 ;; Make sure the newline before point isn't invisible. | |
| 163 (not (get-char-property (1- (point)) 'invisible)) | |
| 164 ;; This should probably also test for the previous char | |
| 165 ;; being the *last* character too. | |
| 166 (not (get-char-property (1- (point)) 'end-open)) | |
| 167 ;; Make sure the newline before point has the same | |
| 168 ;; properties as the char before it (if any). | |
| 169 (< (or (previous-extent-change (point)) -2) | |
| 170 (- (point) 2)))) | |
| 171 (was-page-start (and (bolp) | |
| 172 (looking-at page-delimiter))) | |
| 173 (beforepos (point))) | |
| 174 (if flag (backward-char 1)) | |
| 175 ;; Call self-insert so that auto-fill, abbrev expansion etc. happens. | |
| 176 ;; Set last-command-char to tell self-insert what to insert. | |
| 177 (let ((last-command-char ?\n) | |
| 178 ;; Don't auto-fill if we have a numeric argument. | |
| 179 ;; Also not if flag is true (it would fill wrong line); | |
| 180 ;; there is no need to since we're at BOL. | |
| 444 | 181 (auto-fill-function (if (or n flag) nil auto-fill-function))) |
| 428 | 182 (unwind-protect |
| 444 | 183 (self-insert-command (prefix-numeric-value n)) |
| 428 | 184 ;; If we get an error in self-insert-command, put point at right place. |
| 185 (if flag (forward-char 1)))) | |
| 186 ;; If we did *not* get an error, cancel that forward-char. | |
| 187 (if flag (backward-char 1)) | |
| 188 ;; Mark the newline(s) `hard'. | |
| 189 (if use-hard-newlines | |
| 444 | 190 (let* ((from (- (point) (if n (prefix-numeric-value n) 1))) |
| 428 | 191 (sticky (get-text-property from 'end-open))) ; XEmacs |
| 192 (put-text-property from (point) 'hard 't) | |
| 193 ;; If end-open is not "t", add 'hard to end-open list | |
| 194 (if (and (listp sticky) (not (memq 'hard sticky))) | |
| 195 (put-text-property from (point) 'end-open ; XEmacs | |
| 196 (cons 'hard sticky))))) | |
| 197 ;; If the newline leaves the previous line blank, | |
| 198 ;; and we have a left margin, delete that from the blank line. | |
| 199 (or flag | |
| 200 (save-excursion | |
| 201 (goto-char beforepos) | |
| 202 (beginning-of-line) | |
| 203 (and (looking-at "[ \t]$") | |
| 204 (> (current-left-margin) 0) | |
| 205 (delete-region (point) (progn (end-of-line) (point)))))) | |
| 206 (if flag (forward-char 1)) | |
| 207 ;; Indent the line after the newline, except in one case: | |
| 208 ;; when we added the newline at the beginning of a line | |
| 209 ;; which starts a page. | |
| 210 (or was-page-start | |
| 211 (move-to-left-margin nil t))) | |
| 212 nil) | |
| 213 | |
| 214 (defun set-hard-newline-properties (from to) | |
| 215 (let ((sticky (get-text-property from 'rear-nonsticky))) | |
| 216 (put-text-property from to 'hard 't) | |
| 217 ;; If rear-nonsticky is not "t", add 'hard to rear-nonsticky list | |
| 218 (if (and (listp sticky) (not (memq 'hard sticky))) | |
| 219 (put-text-property from (point) 'rear-nonsticky | |
| 220 (cons 'hard sticky))))) | |
| 221 | |
| 444 | 222 (defun open-line (n) |
| 428 | 223 "Insert a newline and leave point before it. |
| 224 If there is a fill prefix and/or a left-margin, insert them on the new line | |
| 225 if the line would have been blank. | |
| 226 With arg N, insert N newlines." | |
| 227 (interactive "*p") | |
| 228 (let* ((do-fill-prefix (and fill-prefix (bolp))) | |
| 229 (do-left-margin (and (bolp) (> (current-left-margin) 0))) | |
| 230 (loc (point))) | |
| 444 | 231 (newline n) |
| 428 | 232 (goto-char loc) |
| 444 | 233 (while (> n 0) |
| 428 | 234 (cond ((bolp) |
| 235 (if do-left-margin (indent-to (current-left-margin))) | |
| 236 (if do-fill-prefix (insert fill-prefix)))) | |
| 237 (forward-line 1) | |
| 444 | 238 (setq n (1- n))) |
| 428 | 239 (goto-char loc) |
| 240 (end-of-line))) | |
| 241 | |
| 242 (defun split-line () | |
| 243 "Split current line, moving portion beyond point vertically down." | |
| 244 (interactive "*") | |
| 245 (skip-chars-forward " \t") | |
| 246 (let ((col (current-column)) | |
| 247 (pos (point))) | |
| 248 (newline 1) | |
| 249 (indent-to col 0) | |
| 250 (goto-char pos))) | |
| 251 | |
| 252 (defun quoted-insert (arg) | |
| 253 "Read next input character and insert it. | |
| 254 This is useful for inserting control characters. | |
| 255 You may also type up to 3 octal digits, to insert a character with that code. | |
| 256 | |
| 257 In overwrite mode, this function inserts the character anyway, and | |
| 258 does not handle octal digits specially. This means that if you use | |
| 259 overwrite as your normal editing mode, you can use this function to | |
| 260 insert characters when necessary. | |
| 261 | |
| 262 In binary overwrite mode, this function does overwrite, and octal | |
| 263 digits are interpreted as a character code. This is supposed to make | |
| 264 this function useful in editing binary files." | |
| 265 (interactive "*p") | |
| 266 (let ((char (if (or (not overwrite-mode) | |
| 267 (eq overwrite-mode 'overwrite-mode-binary)) | |
| 268 (read-quoted-char) | |
| 269 ;; read-char obeys C-g, so we should protect. FSF | |
| 270 ;; doesn't have the protection here, but it's a bug in | |
| 271 ;; FSF. | |
| 272 (let ((inhibit-quit t)) | |
| 273 (read-char))))) | |
| 274 (if (> arg 0) | |
| 275 (if (eq overwrite-mode 'overwrite-mode-binary) | |
| 276 (delete-char arg))) | |
| 277 (while (> arg 0) | |
| 278 (insert char) | |
| 279 (setq arg (1- arg))))) | |
| 280 | |
| 281 (defun delete-indentation (&optional arg) | |
| 282 "Join this line to previous and fix up whitespace at join. | |
| 283 If there is a fill prefix, delete it from the beginning of this line. | |
| 284 With argument, join this line to following line." | |
| 285 (interactive "*P") | |
| 286 (beginning-of-line) | |
| 287 (if arg (forward-line 1)) | |
| 288 (if (eq (char-before (point)) ?\n) | |
| 289 (progn | |
| 290 (delete-region (point) (1- (point))) | |
| 291 ;; If the second line started with the fill prefix, | |
| 292 ;; delete the prefix. | |
| 293 (if (and fill-prefix | |
| 294 (<= (+ (point) (length fill-prefix)) (point-max)) | |
| 295 (string= fill-prefix | |
| 296 (buffer-substring (point) | |
| 297 (+ (point) (length fill-prefix))))) | |
| 298 (delete-region (point) (+ (point) (length fill-prefix)))) | |
| 299 (fixup-whitespace)))) | |
| 300 | |
| 958 | 301 (defalias 'join-line 'delete-indentation) |
| 302 | |
| 428 | 303 (defun fixup-whitespace () |
| 304 "Fixup white space between objects around point. | |
| 305 Leave one space or none, according to the context." | |
| 306 (interactive "*") | |
| 307 (save-excursion | |
| 308 (delete-horizontal-space) | |
| 309 (if (or (looking-at "^\\|\\s)") | |
| 446 | 310 (save-excursion (backward-char 1) |
| 428 | 311 (looking-at "$\\|\\s(\\|\\s'"))) |
| 312 nil | |
| 313 (insert ?\ )))) | |
| 314 | |
| 315 (defun delete-horizontal-space () | |
| 316 "Delete all spaces and tabs around point." | |
| 317 (interactive "*") | |
| 318 (skip-chars-backward " \t") | |
| 319 (delete-region (point) (progn (skip-chars-forward " \t") (point)))) | |
| 320 | |
| 321 (defun just-one-space () | |
| 322 "Delete all spaces and tabs around point, leaving one space." | |
| 323 (interactive "*") | |
| 324 (if abbrev-mode ; XEmacs | |
| 325 (expand-abbrev)) | |
| 326 (skip-chars-backward " \t") | |
| 327 (if (eq (char-after (point)) ? ) ; XEmacs | |
| 328 (forward-char 1) | |
| 329 (insert ? )) | |
| 330 (delete-region (point) (progn (skip-chars-forward " \t") (point)))) | |
| 331 | |
| 332 (defun delete-blank-lines () | |
| 333 "On blank line, delete all surrounding blank lines, leaving just one. | |
| 334 On isolated blank line, delete that one. | |
| 335 On nonblank line, delete any immediately following blank lines." | |
| 336 (interactive "*") | |
| 337 (let (thisblank singleblank) | |
| 338 (save-excursion | |
| 339 (beginning-of-line) | |
| 340 (setq thisblank (looking-at "[ \t]*$")) | |
| 341 ;; Set singleblank if there is just one blank line here. | |
| 342 (setq singleblank | |
| 343 (and thisblank | |
| 344 (not (looking-at "[ \t]*\n[ \t]*$")) | |
| 345 (or (bobp) | |
| 346 (progn (forward-line -1) | |
| 347 (not (looking-at "[ \t]*$"))))))) | |
| 348 ;; Delete preceding blank lines, and this one too if it's the only one. | |
| 349 (if thisblank | |
| 350 (progn | |
| 351 (beginning-of-line) | |
| 352 (if singleblank (forward-line 1)) | |
| 353 (delete-region (point) | |
| 354 (if (re-search-backward "[^ \t\n]" nil t) | |
| 355 (progn (forward-line 1) (point)) | |
| 356 (point-min))))) | |
| 357 ;; Delete following blank lines, unless the current line is blank | |
| 358 ;; and there are no following blank lines. | |
| 359 (if (not (and thisblank singleblank)) | |
| 360 (save-excursion | |
| 361 (end-of-line) | |
| 362 (forward-line 1) | |
| 363 (delete-region (point) | |
| 364 (if (re-search-forward "[^ \t\n]" nil t) | |
| 365 (progn (beginning-of-line) (point)) | |
| 366 (point-max))))) | |
| 367 ;; Handle the special case where point is followed by newline and eob. | |
| 368 ;; Delete the line, leaving point at eob. | |
| 369 (if (looking-at "^[ \t]*\n\\'") | |
| 370 (delete-region (point) (point-max))))) | |
| 371 | |
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372 (defcustom delete-trailing-lines t |
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373 "If non-nil, \\[delete-trailing-whitespace] deletes trailing lines. |
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374 Trailing lines are deleted only if `delete-trailing-whitespace' |
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375 is called on the entire buffer (rather than an active region)." |
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376 :type 'boolean |
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377 :group 'editing) |
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378 ; :version "24.2") |
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379 |
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380 (defun delete-trailing-whitespace (&optional start end) |
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381 "Delete trailing whitespace between START and END. |
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382 If called interactively, START and END are the start/end of the |
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383 region if the mark is active, or of the buffer's accessible |
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384 portion if the mark is inactive. |
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385 |
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386 This command deletes whitespace characters after the last |
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387 non-whitespace character in each line between START and END. It |
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388 does not consider formfeed characters to be whitespace. |
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389 |
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390 If this command acts on the entire buffer (i.e. if called |
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391 interactively with the mark inactive, or called from Lisp with |
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392 END nil), it also deletes all trailing lines at the end of the |
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393 buffer if the variable `delete-trailing-lines' is non-nil." |
|
5684
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394 (interactive (progn |
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395 (barf-if-buffer-read-only) |
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396 (if (if zmacs-regions |
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397 zmacs-region-active-p |
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398 (eq (marker-buffer (mark-marker t)) (current-buffer))) |
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399 (list (region-beginning) (region-end)) |
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400 (list nil nil)))) |
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401 (save-match-data |
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402 (save-excursion |
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403 (let ((end-marker (copy-marker (or end (point-max)))) |
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404 (start (or start (point-min)))) |
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405 (goto-char start) |
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406 (while (re-search-forward "\\s-$" end-marker t) |
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407 (skip-syntax-backward "-" (line-beginning-position)) |
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408 ;; Don't delete formfeeds, even if they are considered whitespace. |
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409 ;; XEmacs; #'looking-at-p not (yet) available |
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410 (if (save-match-data (looking-at ".*\f")) |
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411 (goto-char (match-end 0))) |
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412 (delete-region (point) (match-end 0))) |
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413 ;; Delete trailing empty lines. |
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414 (goto-char end-marker) |
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415 (when (and (not end) |
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416 delete-trailing-lines |
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417 ;; Really the end of buffer. |
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418 (save-restriction (widen) (eobp)) |
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419 (<= (skip-chars-backward "\n") -2)) |
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420 (delete-region (1+ (point)) end-marker)) |
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421 (set-marker end-marker nil)))) |
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422 ;; Return nil for the benefit of `write-file-functions'. |
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423 nil) |
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424 |
| 428 | 425 (defun back-to-indentation () |
| 426 "Move point to the first non-whitespace character on this line." | |
| 427 ;; XEmacs change | |
| 428 (interactive "_") | |
| 429 (beginning-of-line 1) | |
| 430 (skip-chars-forward " \t")) | |
| 431 | |
| 432 (defun newline-and-indent () | |
| 433 "Insert a newline, then indent according to major mode. | |
| 434 Indentation is done using the value of `indent-line-function'. | |
| 435 In programming language modes, this is the same as TAB. | |
| 436 In some text modes, where TAB inserts a tab, this command indents to the | |
| 437 column specified by the function `current-left-margin'." | |
| 438 (interactive "*") | |
| 439 (delete-region (point) (progn (skip-chars-backward " \t") (point))) | |
| 440 (newline) | |
| 441 (indent-according-to-mode)) | |
| 442 | |
| 443 (defun reindent-then-newline-and-indent () | |
| 444 "Reindent current line, insert newline, then indent the new line. | |
| 445 Indentation of both lines is done according to the current major mode, | |
| 446 which means calling the current value of `indent-line-function'. | |
| 447 In programming language modes, this is the same as TAB. | |
| 448 In some text modes, where TAB inserts a tab, this indents to the | |
| 449 column specified by the function `current-left-margin'." | |
| 450 (interactive "*") | |
| 451 (save-excursion | |
| 452 (delete-region (point) (progn (skip-chars-backward " \t") (point))) | |
| 453 (indent-according-to-mode)) | |
| 454 (newline) | |
| 455 (indent-according-to-mode)) | |
| 456 | |
| 457 ;; Internal subroutine of delete-char | |
| 458 (defun kill-forward-chars (arg) | |
| 459 (if (listp arg) (setq arg (car arg))) | |
| 460 (if (eq arg '-) (setq arg -1)) | |
| 461 (kill-region (point) (+ (point) arg))) | |
| 462 | |
| 463 (defun backward-delete-char-untabify (arg &optional killp) | |
| 464 "Delete characters backward, changing tabs into spaces. | |
| 465 Delete ARG chars, and kill (save in kill ring) if KILLP is non-nil. | |
| 466 Interactively, ARG is the prefix arg (default 1) | |
| 467 and KILLP is t if a prefix arg was specified." | |
| 468 (interactive "*p\nP") | |
| 469 (let ((count arg)) | |
| 470 (save-excursion | |
| 471 (while (and (> count 0) (not (bobp))) | |
| 472 (if (eq (char-before (point)) ?\t) ; XEmacs | |
| 473 (let ((col (current-column))) | |
| 446 | 474 (backward-char 1) |
| 428 | 475 (setq col (- col (current-column))) |
| 476 (insert-char ?\ col) | |
| 477 (delete-char 1))) | |
| 446 | 478 (backward-char 1) |
| 428 | 479 (setq count (1- count))))) |
| 480 (delete-backward-char arg killp) | |
| 481 ;; XEmacs: In overwrite mode, back over columns while clearing them out, | |
| 482 ;; unless at end of line. | |
| 483 (and overwrite-mode (not (eolp)) | |
| 484 (save-excursion (insert-char ?\ arg)))) | |
| 485 | |
| 486 (defcustom delete-key-deletes-forward t | |
| 487 "*If non-nil, the DEL key will erase one character forwards. | |
| 488 If nil, the DEL key will erase one character backwards." | |
| 489 :type 'boolean | |
| 490 :group 'editing-basics) | |
| 491 | |
| 446 | 492 (defcustom backward-delete-function 'delete-backward-char |
| 428 | 493 "*Function called to delete backwards on a delete keypress. |
| 494 If `delete-key-deletes-forward' is nil, `backward-or-forward-delete-char' | |
| 495 calls this function to erase one character backwards. Default value | |
| 446 | 496 is `delete-backward-char', with `backward-delete-char-untabify' being a |
| 428 | 497 popular alternate setting." |
| 498 :type 'function | |
| 499 :group 'editing-basics) | |
| 500 | |
| 501 ;; Trash me, baby. | |
| 502 (defsubst delete-forward-p () | |
| 503 (and delete-key-deletes-forward | |
| 504 (or (not (eq (device-type) 'x)) | |
| 502 | 505 (declare-fboundp |
| 506 (x-keysym-on-keyboard-sans-modifiers-p 'backspace))))) | |
| 428 | 507 |
| 508 (defun backward-or-forward-delete-char (arg) | |
| 509 "Delete either one character backwards or one character forwards. | |
| 510 Controlled by the state of `delete-key-deletes-forward' and whether the | |
| 511 BackSpace keysym even exists on your keyboard. If you don't have a | |
| 512 BackSpace keysym, the delete key should always delete one character | |
| 513 backwards." | |
| 514 (interactive "*p") | |
| 515 (if (delete-forward-p) | |
| 516 (delete-char arg) | |
| 517 (funcall backward-delete-function arg))) | |
| 518 | |
| 519 (defun backward-or-forward-kill-word (arg) | |
| 520 "Delete either one word backwards or one word forwards. | |
| 521 Controlled by the state of `delete-key-deletes-forward' and whether the | |
| 522 BackSpace keysym even exists on your keyboard. If you don't have a | |
| 523 BackSpace keysym, the delete key should always delete one character | |
| 524 backwards." | |
| 525 (interactive "*p") | |
| 526 (if (delete-forward-p) | |
| 527 (kill-word arg) | |
| 528 (backward-kill-word arg))) | |
| 529 | |
| 530 (defun backward-or-forward-kill-sentence (arg) | |
| 531 "Delete either one sentence backwards or one sentence forwards. | |
| 532 Controlled by the state of `delete-key-deletes-forward' and whether the | |
| 533 BackSpace keysym even exists on your keyboard. If you don't have a | |
| 534 BackSpace keysym, the delete key should always delete one character | |
| 535 backwards." | |
| 536 (interactive "*P") | |
| 537 (if (delete-forward-p) | |
| 538 (kill-sentence arg) | |
| 539 (backward-kill-sentence (prefix-numeric-value arg)))) | |
| 540 | |
| 541 (defun backward-or-forward-kill-sexp (arg) | |
| 542 "Delete either one sexpr backwards or one sexpr forwards. | |
| 543 Controlled by the state of `delete-key-deletes-forward' and whether the | |
| 544 BackSpace keysym even exists on your keyboard. If you don't have a | |
| 545 BackSpace keysym, the delete key should always delete one character | |
| 546 backwards." | |
| 547 (interactive "*p") | |
| 548 (if (delete-forward-p) | |
| 549 (kill-sexp arg) | |
| 550 (backward-kill-sexp arg))) | |
| 551 | |
| 552 (defun zap-to-char (arg char) | |
| 553 "Kill up to and including ARG'th occurrence of CHAR. | |
| 554 Goes backward if ARG is negative; error if CHAR not found." | |
| 555 (interactive "*p\ncZap to char: ") | |
| 556 (kill-region (point) (with-interactive-search-caps-disable-folding | |
| 557 (char-to-string char) nil | |
| 558 (search-forward (char-to-string char) nil nil arg) | |
| 559 (point)))) | |
| 560 | |
| 561 (defun zap-up-to-char (arg char) | |
| 562 "Kill up to ARG'th occurrence of CHAR. | |
| 563 Goes backward if ARG is negative; error if CHAR not found." | |
| 564 (interactive "*p\ncZap up to char: ") | |
| 565 (kill-region (point) (with-interactive-search-caps-disable-folding | |
| 566 (char-to-string char) nil | |
| 567 (search-forward (char-to-string char) nil nil arg) | |
| 568 (goto-char (if (> arg 0) (1- (point)) (1+ (point)))) | |
| 569 (point)))) | |
| 570 | |
| 571 (defun beginning-of-buffer (&optional arg) | |
| 572 "Move point to the beginning of the buffer; leave mark at previous position. | |
| 573 With arg N, put point N/10 of the way from the beginning. | |
| 574 | |
| 575 If the buffer is narrowed, this command uses the beginning and size | |
| 576 of the accessible part of the buffer. | |
| 577 | |
| 462 | 578 The characters that are moved over may be added to the current selection |
| 579 \(i.e. active region) if the Shift key is held down, a motion key is used | |
| 580 to invoke this command, and `shifted-motion-keys-select-region' is t; see | |
| 581 the documentation for this variable for more details. | |
| 582 | |
| 428 | 583 Don't use this command in Lisp programs! |
| 584 \(goto-char (point-min)) is faster and avoids clobbering the mark." | |
| 585 ;; XEmacs change | |
| 586 (interactive "_P") | |
| 587 (push-mark) | |
| 588 (let ((size (- (point-max) (point-min)))) | |
| 589 (goto-char (if arg | |
| 590 (+ (point-min) | |
| 591 (if (> size 10000) | |
| 592 ;; Avoid overflow for large buffer sizes! | |
| 593 (* (prefix-numeric-value arg) | |
| 594 (/ size 10)) | |
| 595 (/ (+ 10 (* size (prefix-numeric-value arg))) 10))) | |
| 596 (point-min)))) | |
| 597 (if arg (forward-line 1))) | |
| 598 | |
| 599 (defun end-of-buffer (&optional arg) | |
| 600 "Move point to the end of the buffer; leave mark at previous position. | |
| 601 With arg N, put point N/10 of the way from the end. | |
| 602 | |
| 603 If the buffer is narrowed, this command uses the beginning and size | |
| 604 of the accessible part of the buffer. | |
| 605 | |
| 462 | 606 The characters that are moved over may be added to the current selection |
| 607 \(i.e. active region) if the Shift key is held down, a motion key is used | |
| 608 to invoke this command, and `shifted-motion-keys-select-region' is t; see | |
| 609 the documentation for this variable for more details. | |
| 610 | |
| 428 | 611 Don't use this command in Lisp programs! |
| 612 \(goto-char (point-max)) is faster and avoids clobbering the mark." | |
| 613 ;; XEmacs change | |
| 614 (interactive "_P") | |
| 615 (push-mark) | |
| 616 ;; XEmacs changes here. | |
| 617 (let ((scroll-to-end (not (pos-visible-in-window-p (point-max)))) | |
| 618 (size (- (point-max) (point-min)))) | |
| 619 (goto-char (if arg | |
| 620 (- (point-max) | |
| 621 (if (> size 10000) | |
| 622 ;; Avoid overflow for large buffer sizes! | |
| 623 (* (prefix-numeric-value arg) | |
| 624 (/ size 10)) | |
| 625 (/ (* size (prefix-numeric-value arg)) 10))) | |
| 626 (point-max))) | |
| 627 (cond (arg | |
| 628 ;; If we went to a place in the middle of the buffer, | |
| 629 ;; adjust it to the beginning of a line. | |
| 630 (forward-line 1)) | |
| 631 ;; XEmacs change | |
| 632 (scroll-to-end | |
| 633 ;; If the end of the buffer is not already on the screen, | |
| 634 ;; then scroll specially to put it near, but not at, the bottom. | |
| 635 (recenter -3))))) | |
| 636 | |
| 637 ;; XEmacs (not in FSF) | |
| 638 (defun mark-beginning-of-buffer (&optional arg) | |
| 639 "Push a mark at the beginning of the buffer; leave point where it is. | |
| 640 With arg N, push mark N/10 of the way from the true beginning." | |
| 641 (interactive "P") | |
| 642 (push-mark (if arg | |
| 643 (if (> (buffer-size) 10000) | |
| 644 ;; Avoid overflow for large buffer sizes! | |
| 645 (* (prefix-numeric-value arg) | |
| 646 (/ (buffer-size) 10)) | |
| 647 (/ (+ 10 (* (buffer-size) (prefix-numeric-value arg))) 10)) | |
| 648 (point-min)) | |
| 649 nil | |
| 650 t)) | |
| 651 (define-function 'mark-bob 'mark-beginning-of-buffer) | |
| 652 | |
| 653 ;; XEmacs (not in FSF) | |
| 654 (defun mark-end-of-buffer (&optional arg) | |
| 655 "Push a mark at the end of the buffer; leave point where it is. | |
| 656 With arg N, push mark N/10 of the way from the true end." | |
| 657 (interactive "P") | |
| 658 (push-mark (if arg | |
| 659 (- (1+ (buffer-size)) | |
| 660 (if (> (buffer-size) 10000) | |
| 661 ;; Avoid overflow for large buffer sizes! | |
| 662 (* (prefix-numeric-value arg) | |
| 663 (/ (buffer-size) 10)) | |
| 664 (/ (* (buffer-size) (prefix-numeric-value arg)) 10))) | |
| 665 (point-max)) | |
| 666 nil | |
| 667 t)) | |
| 668 (define-function 'mark-eob 'mark-end-of-buffer) | |
| 669 | |
| 670 (defun mark-whole-buffer () | |
| 671 "Put point at beginning and mark at end of buffer. | |
| 672 You probably should not use this function in Lisp programs; | |
| 673 it is usually a mistake for a Lisp function to use any subroutine | |
| 674 that uses or sets the mark." | |
| 675 (interactive) | |
| 676 (push-mark (point)) | |
| 677 (push-mark (point-max) nil t) | |
| 678 (goto-char (point-min))) | |
| 679 | |
| 680 ;; XEmacs | |
| 681 (defun eval-current-buffer (&optional printflag) | |
| 682 "Evaluate the current buffer as Lisp code. | |
| 683 Programs can pass argument PRINTFLAG which controls printing of output: | |
| 684 nil means discard it; anything else is stream for print." | |
| 685 (interactive) | |
| 686 (eval-buffer (current-buffer) printflag)) | |
| 687 | |
| 688 ;; XEmacs | |
| 689 (defun count-words-buffer (&optional buffer) | |
| 690 "Print the number of words in BUFFER. | |
| 691 If called noninteractively, the value is returned rather than printed. | |
| 692 BUFFER defaults to the current buffer." | |
| 693 (interactive) | |
| 694 (let ((words (count-words-region (point-min) (point-max) buffer))) | |
| 695 (when (interactive-p) | |
| 696 (message "Buffer has %d words" words)) | |
| 697 words)) | |
| 698 | |
| 699 ;; XEmacs | |
| 700 (defun count-words-region (start end &optional buffer) | |
| 701 "Print the number of words in region between START and END in BUFFER. | |
| 702 If called noninteractively, the value is returned rather than printed. | |
| 703 BUFFER defaults to the current buffer." | |
| 704 (interactive "_r") | |
| 705 (save-excursion | |
| 706 (set-buffer (or buffer (current-buffer))) | |
| 707 (let ((words 0)) | |
| 708 (goto-char start) | |
| 709 (while (< (point) end) | |
| 710 (when (forward-word 1) | |
| 711 (incf words))) | |
| 712 (when (interactive-p) | |
| 713 (message "Region has %d words" words)) | |
| 714 words))) | |
| 715 | |
| 716 (defun count-lines-region (start end) | |
| 717 "Print number of lines and characters in the region." | |
| 718 ;; XEmacs change | |
| 719 (interactive "_r") | |
| 720 (message "Region has %d lines, %d characters" | |
| 721 (count-lines start end) (- end start))) | |
| 722 | |
| 723 ;; XEmacs | |
| 724 (defun count-lines-buffer (&optional buffer) | |
| 725 "Print number of lines and characters in BUFFER." | |
| 726 (interactive) | |
| 727 (with-current-buffer (or buffer (current-buffer)) | |
| 728 (let ((cnt (count-lines (point-min) (point-max)))) | |
| 729 (message "Buffer has %d lines, %d characters" | |
| 730 cnt (- (point-max) (point-min))) | |
| 731 cnt))) | |
| 732 | |
| 733 ;;; Modified by Bob Weiner, 8/24/95, to print narrowed line number also. | |
| 734 ;;; Expanded by Bob Weiner, BeOpen, on 02/12/1997 | |
| 735 (defun what-line () | |
| 736 "Print the following variants of the line number of point: | |
| 737 Region line - displayed line within the active region | |
| 738 Collapsed line - includes only selectively displayed lines; | |
| 739 Buffer line - physical line in the buffer; | |
| 740 Narrowed line - line number from the start of the buffer narrowing." | |
| 741 ;; XEmacs change | |
| 742 (interactive "_") | |
| 743 (let ((opoint (point)) start) | |
| 744 (save-excursion | |
| 745 (save-restriction | |
| 746 (if (region-active-p) | |
| 747 (goto-char (region-beginning)) | |
| 748 (goto-char (point-min))) | |
| 749 (widen) | |
| 750 (beginning-of-line) | |
| 751 (setq start (point)) | |
| 752 (goto-char opoint) | |
| 753 (beginning-of-line) | |
| 754 (let* ((buffer-line (1+ (count-lines 1 (point)))) | |
| 755 (narrowed-p (or (/= start 1) | |
| 756 (/= (point-max) (1+ (buffer-size))))) | |
| 757 (narrowed-line (if narrowed-p (1+ (count-lines start (point))))) | |
| 758 (selective-line (if selective-display | |
| 759 (1+ (count-lines start (point) t)))) | |
| 760 (region-line (if (region-active-p) | |
| 761 (1+ (count-lines start (point) selective-display))))) | |
| 762 (cond (region-line | |
| 763 (message "Region line %d; Buffer line %d" | |
| 764 region-line buffer-line)) | |
| 765 ((and narrowed-p selective-line (/= selective-line narrowed-line)) | |
| 766 ;; buffer narrowed and some lines selectively displayed | |
| 767 (message "Collapsed line %d; Buffer line %d; Narrowed line %d" | |
| 768 selective-line buffer-line narrowed-line)) | |
| 769 (narrowed-p | |
| 770 ;; buffer narrowed | |
| 771 (message "Buffer line %d; Narrowed line %d" | |
| 772 buffer-line narrowed-line)) | |
| 773 ((and selective-line (/= selective-line buffer-line)) | |
| 774 ;; some lines selectively displayed | |
| 775 (message "Collapsed line %d; Buffer line %d" | |
| 776 selective-line buffer-line)) | |
| 777 (t | |
| 778 ;; give a basic line count | |
| 779 (message "Line %d" buffer-line))))))) | |
| 780 (setq zmacs-region-stays t)) | |
| 781 | |
| 442 | 782 ;; new in XEmacs 21.2 (not in FSF). |
| 783 (defun line-number (&optional pos respect-narrowing) | |
| 784 "Return the line number of POS (defaults to point). | |
| 785 If RESPECT-NARROWING is non-nil, then the narrowed line number is returned; | |
| 786 otherwise, the absolute line number is returned. The returned line can always | |
| 787 be given to `goto-line' to get back to the current line." | |
| 788 (if (and pos (/= pos (point))) | |
| 789 (save-excursion | |
| 790 (goto-char pos) | |
| 791 (line-number nil respect-narrowing)) | |
| 792 (1+ (count-lines (if respect-narrowing (point-min) 1) (point-at-bol))))) | |
| 793 | |
| 3000 | 794 ;; FSF 22.0.50.1 (CVS) version of above. |
| 795 (defun line-number-at-pos (&optional pos) | |
| 796 (line-number pos t)) | |
| 797 | |
| 428 | 798 (defun count-lines (start end &optional ignore-invisible-lines-flag) |
| 799 "Return number of lines between START and END. | |
| 800 This is usually the number of newlines between them, | |
| 801 but can be one more if START is not equal to END | |
| 802 and the greater of them is not at the start of a line. | |
| 803 | |
| 804 With optional IGNORE-INVISIBLE-LINES-FLAG non-nil, lines collapsed with | |
| 442 | 805 selective-display are excluded from the line count. |
| 806 | |
| 807 NOTE: The expression to return the current line number is not obvious: | |
| 808 | |
| 3767 | 809 \(1+ \(count-lines 1 \(point-at-bol))) |
| 442 | 810 |
| 811 See also `line-number'." | |
| 428 | 812 (save-excursion |
| 813 (save-restriction | |
| 814 (narrow-to-region start end) | |
| 815 (goto-char (point-min)) | |
| 816 (if (and (not ignore-invisible-lines-flag) (eq selective-display t)) | |
| 817 (save-match-data | |
| 818 (let ((done 0)) | |
| 819 (while (re-search-forward "[\n\C-m]" nil t 40) | |
| 820 (setq done (+ 40 done))) | |
| 821 (while (re-search-forward "[\n\C-m]" nil t 1) | |
| 822 (setq done (+ 1 done))) | |
| 823 (goto-char (point-max)) | |
| 824 (if (and (/= start end) | |
| 825 (not (bolp))) | |
| 826 (1+ done) | |
| 827 done))) | |
| 828 (- (buffer-size) (forward-line (buffer-size))))))) | |
| 829 | |
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830 (defun what-cursor-position (&optional detail) |
| 3724 | 831 "Print info on cursor position (on screen and within buffer). |
| 832 Also describe the character after point, giving its UCS code point and Mule | |
| 833 charset and codes; for ASCII characters, give its code in octal, decimal and | |
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834 hex. |
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835 |
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836 With prefix argument, show extended details about the character in a |
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837 separate buffer. See also the command `describe-char'." |
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838 ;; XEmacs change "_" |
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839 (interactive "_P") |
| 428 | 840 (let* ((char (char-after (point))) ; XEmacs |
| 841 (beg (point-min)) | |
| 842 (end (point-max)) | |
| 843 (pos (point)) | |
| 844 (total (buffer-size)) | |
| 845 (percent (if (> total 50000) | |
| 846 ;; Avoid overflow from multiplying by 100! | |
| 847 (/ (+ (/ total 200) (1- pos)) (max (/ total 100) 1)) | |
| 848 (/ (+ (/ total 2) (* 100 (1- pos))) (max total 1)))) | |
| 849 (hscroll (if (= (window-hscroll) 0) | |
| 850 "" | |
| 851 (format " Hscroll=%d" (window-hscroll)))) | |
| 3724 | 852 (col (+ (current-column) (if column-number-start-at-one 1 0))) |
| 853 (unicode (and char (encode-char char 'ucs))) | |
| 854 (unicode-string (and unicode (natnump unicode) | |
| 855 (format (if (> unicode #xFFFF) "U+%06X" "U+%04X") | |
| 856 unicode))) | |
| 857 (narrowed-details (if (or (/= beg 1) (/= end (1+ total))) | |
| 858 (format " <%d - %d>" beg end) | |
| 859 ""))) | |
| 860 | |
| 428 | 861 (if (= pos end) |
| 3724 | 862 (message "point=%d of %d(%d%%)%s column %d %s" |
| 863 pos total percent narrowed-details col hscroll) | |
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864 (if detail |
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865 (describe-char (point))) |
| 3724 | 866 ;; XEmacs: don't use single-key-description, treat non-ASCII |
| 867 ;; characters differently. | |
| 868 (if (< char ?\x80) | |
| 869 (message "Char: %s (0%o, %d, %x) point=%d of %d(%d%%)%s column %d %s" | |
| 870 (text-char-description char) char char char pos total | |
| 871 percent narrowed-details col hscroll) | |
| 872 (message "Char: %s (%s %s) point=%d of %d(%d%%)%s column %d %s" | |
| 873 (text-char-description char) unicode-string | |
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874 (mapconcat #'prin1-to-string (split-char char) " ") |
| 3724 | 875 pos total |
| 876 percent narrowed-details col hscroll))))) | |
| 428 | 877 |
| 878 (defun fundamental-mode () | |
| 879 "Major mode not specialized for anything in particular. | |
| 880 Other major modes are defined by comparison with this one." | |
| 881 (interactive) | |
| 882 (kill-all-local-variables)) | |
| 883 | |
| 884 ;; XEmacs the following are declared elsewhere | |
| 885 ;(defvar read-expression-map (cons 'keymap minibuffer-local-map) | |
| 886 ; "Minibuffer keymap used for reading Lisp expressions.") | |
| 887 ;(define-key read-expression-map "\M-\t" 'lisp-complete-symbol) | |
| 888 | |
| 889 ;(put 'eval-expression 'disabled t) | |
| 890 | |
| 891 ;(defvar read-expression-history nil) | |
| 892 | |
| 893 ;; We define this, rather than making `eval' interactive, | |
| 894 ;; for the sake of completion of names like eval-region, eval-current-buffer. | |
| 895 (defun eval-expression (expression &optional eval-expression-insert-value) | |
| 896 "Evaluate EXPRESSION and print value in minibuffer. | |
| 897 Value is also consed on to front of the variable `values'. | |
| 898 With prefix argument, insert the result to the current buffer." | |
| 899 ;(interactive "xEval: ") | |
| 900 (interactive | |
| 901 (list (read-from-minibuffer "Eval: " | |
| 902 nil read-expression-map t | |
| 903 'read-expression-history) | |
| 904 current-prefix-arg)) | |
| 905 (setq values (cons (eval expression) values)) | |
| 906 (prin1 (car values) | |
| 907 (if eval-expression-insert-value (current-buffer) t))) | |
| 908 | |
| 909 ;; XEmacs -- extra parameter (variant, but equivalent logic) | |
| 444 | 910 (defun edit-and-eval-command (prompt form &optional history) |
| 911 "Prompting with PROMPT, let user edit FORM and eval result. | |
| 912 FORM is a Lisp expression. Let user edit that expression in | |
| 428 | 913 the minibuffer, then read and evaluate the result." |
| 444 | 914 (let ((form (read-expression prompt |
| 915 ;; first try to format the thing readably; | |
| 916 ;; and if that fails, print it normally. | |
| 917 (condition-case () | |
| 918 (let ((print-readably t)) | |
| 919 (prin1-to-string form)) | |
| 920 (error (prin1-to-string form))) | |
| 921 (or history '(command-history . 1))))) | |
| 428 | 922 (or history (setq history 'command-history)) |
| 923 (if (consp history) | |
| 924 (setq history (car history))) | |
| 925 (if (eq history t) | |
| 926 nil | |
| 444 | 927 ;; If form was added to the history as a string, |
| 428 | 928 ;; get rid of that. We want only evallable expressions there. |
| 929 (if (stringp (car (symbol-value history))) | |
| 930 (set history (cdr (symbol-value history)))) | |
| 931 | |
| 444 | 932 ;; If form to be redone does not match front of history, |
| 428 | 933 ;; add it to the history. |
| 444 | 934 (or (equal form (car (symbol-value history))) |
| 935 (set history (cons form (symbol-value history))))) | |
| 936 (eval form))) | |
| 428 | 937 |
| 938 (defun repeat-complex-command (arg) | |
| 939 "Edit and re-evaluate last complex command, or ARGth from last. | |
| 940 A complex command is one which used the minibuffer. | |
| 941 The command is placed in the minibuffer as a Lisp form for editing. | |
| 942 The result is executed, repeating the command as changed. | |
| 943 If the command has been changed or is not the most recent previous command | |
| 944 it is added to the front of the command history. | |
| 945 You can use the minibuffer history commands \\<minibuffer-local-map>\\[next-history-element] and \\[previous-history-element] | |
| 946 to get different commands to edit and resubmit." | |
| 947 (interactive "p") | |
| 948 ;; XEmacs: It looks like our version is better -sb | |
| 949 (let ((print-level nil)) | |
| 950 (edit-and-eval-command "Redo: " | |
| 951 (or (nth (1- arg) command-history) | |
| 952 (error "")) | |
| 953 (cons 'command-history arg)))) | |
| 954 | |
| 955 ;; XEmacs: Functions moved to minibuf.el | |
| 956 ;; previous-matching-history-element | |
| 957 ;; next-matching-history-element | |
| 958 ;; next-history-element | |
| 959 ;; previous-history-element | |
| 960 ;; next-complete-history-element | |
| 961 ;; previous-complete-history-element | |
| 962 | |
| 3361 | 963 (defun goto-line (line &optional buffer) |
| 964 "Goto line LINE, counting from line 1 at beginning of BUFFER." | |
| 428 | 965 (interactive "NGoto line: ") |
| 444 | 966 (setq line (prefix-numeric-value line)) |
| 3361 | 967 (if buffer |
| 968 (let ((window (get-buffer-window buffer))) | |
| 969 (if window (select-window window) | |
| 970 (switch-to-buffer-other-window buffer)))) | |
| 428 | 971 (save-restriction |
| 972 (widen) | |
| 973 (goto-char 1) | |
| 974 (if (eq selective-display t) | |
| 444 | 975 (re-search-forward "[\n\C-m]" nil 'end (1- line)) |
| 976 (forward-line (1- line))))) | |
| 428 | 977 |
| 771 | 978 ;[Put this on C-x u, so we can force that rather than C-_ into startup msg] |
| 979 ;No more, stop pandering to TTY users. | |
| 428 | 980 (define-function 'advertised-undo 'undo) |
| 981 | |
| 444 | 982 (defun undo (&optional count) |
| 428 | 983 "Undo some previous changes. |
| 984 Repeat this command to undo more changes. | |
| 985 A numeric argument serves as a repeat count." | |
| 986 (interactive "*p") | |
| 987 ;; If we don't get all the way through, make last-command indicate that | |
| 988 ;; for the following command. | |
| 989 (setq this-command t) | |
| 990 (let ((modified (buffer-modified-p)) | |
| 991 (recent-save (recent-auto-save-p))) | |
| 992 (or (eq (selected-window) (minibuffer-window)) | |
| 993 (display-message 'command "Undo!")) | |
| 994 (or (and (eq last-command 'undo) | |
| 995 (eq (current-buffer) last-undo-buffer)) ; XEmacs | |
| 996 (progn (undo-start) | |
| 997 (undo-more 1))) | |
| 444 | 998 (undo-more (or count 1)) |
| 428 | 999 ;; Don't specify a position in the undo record for the undo command. |
| 1000 ;; Instead, undoing this should move point to where the change is. | |
| 1001 (let ((tail buffer-undo-list) | |
| 1002 done) | |
| 1003 (while (and tail (not done) (not (null (car tail)))) | |
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1004 (if (fixnump (car tail)) |
| 428 | 1005 (progn |
| 1006 (setq done t) | |
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1007 (setq buffer-undo-list (delete* (car tail) buffer-undo-list)))) |
| 428 | 1008 (setq tail (cdr tail)))) |
| 1009 (and modified (not (buffer-modified-p)) | |
| 1010 (delete-auto-save-file-if-necessary recent-save))) | |
| 1011 ;; If we do get all the way through, make this-command indicate that. | |
| 1012 (setq this-command 'undo)) | |
| 1013 | |
| 1014 (defvar pending-undo-list nil | |
| 1015 "Within a run of consecutive undo commands, list remaining to be undone.") | |
| 1016 | |
| 1017 (defvar last-undo-buffer nil) ; XEmacs | |
| 1018 | |
| 1019 (defun undo-start () | |
| 1020 "Set `pending-undo-list' to the front of the undo list. | |
| 1021 The next call to `undo-more' will undo the most recently made change." | |
| 1022 (if (eq buffer-undo-list t) | |
| 1023 (error "No undo information in this buffer")) | |
| 1024 (setq pending-undo-list buffer-undo-list)) | |
| 1025 | |
| 1026 (defun undo-more (count) | |
| 1027 "Undo back N undo-boundaries beyond what was already undone recently. | |
| 1028 Call `undo-start' to get ready to undo recent changes, | |
| 1029 then call `undo-more' one or more times to undo them." | |
| 1030 (or pending-undo-list | |
| 1031 (error "No further undo information")) | |
| 1032 (setq pending-undo-list (primitive-undo count pending-undo-list) | |
| 1033 last-undo-buffer (current-buffer))) ; XEmacs | |
| 1034 | |
| 844 | 1035 (defun undo-all-changes () |
| 1036 "Keep undoing till the start of the undo list is reached. | |
| 1037 Undoes all changes, even past a file save. Especially useful when you've | |
| 1038 saved the file at some point." | |
| 1039 (interactive) | |
| 1040 (undo-start) | |
| 1041 (while pending-undo-list (undo-more 1))) | |
| 1042 | |
| 428 | 1043 ;; XEmacs |
| 1044 (defun call-with-transparent-undo (fn &rest args) | |
| 1045 "Apply FN to ARGS, and then undo all changes made by FN to the current | |
| 1046 buffer. The undo records are processed even if FN returns non-locally. | |
| 1047 There is no trace of the changes made by FN in the buffer's undo history. | |
| 1048 | |
| 1049 You can use this in a write-file-hooks function with continue-save-buffer | |
| 1050 to make the contents of a disk file differ from its in-memory buffer." | |
| 1051 (let ((buffer-undo-list nil) | |
| 1052 ;; Kludge to prevent undo list truncation: | |
| 1053 (undo-high-threshold -1) | |
| 1054 (undo-threshold -1) | |
| 1055 (obuffer (current-buffer))) | |
| 1056 (unwind-protect | |
| 1057 (apply fn args) | |
| 1058 ;; Go to the buffer we will restore and make it writable: | |
| 1059 (set-buffer obuffer) | |
| 1060 (save-excursion | |
| 1061 (let ((buffer-read-only nil)) | |
| 1062 (save-restriction | |
| 1063 (widen) | |
| 1064 ;; Perform all undos, with further undo logging disabled: | |
| 1065 (let ((tail buffer-undo-list)) | |
| 1066 (setq buffer-undo-list t) | |
| 1067 (while tail | |
| 1068 (setq tail (primitive-undo (length tail) tail)))))))))) | |
| 1069 | |
| 1070 ;; XEmacs: The following are in other files | |
| 1071 ;; shell-command-history | |
| 1072 ;; shell-command-switch | |
| 1073 ;; shell-command | |
| 1074 ;; shell-command-sentinel | |
| 1075 | |
| 1076 | |
| 1077 (defconst universal-argument-map | |
| 1078 (let ((map (make-sparse-keymap))) | |
| 1079 (set-keymap-default-binding map 'universal-argument-other-key) | |
| 1080 ;FSFmacs (define-key map [switch-frame] nil) | |
| 1081 (define-key map [(t)] 'universal-argument-other-key) | |
| 1082 (define-key map [(meta t)] 'universal-argument-other-key) | |
| 1083 (define-key map [(control u)] 'universal-argument-more) | |
| 1084 (define-key map [?-] 'universal-argument-minus) | |
| 1085 (define-key map [?0] 'digit-argument) | |
| 1086 (define-key map [?1] 'digit-argument) | |
| 1087 (define-key map [?2] 'digit-argument) | |
| 1088 (define-key map [?3] 'digit-argument) | |
| 1089 (define-key map [?4] 'digit-argument) | |
| 1090 (define-key map [?5] 'digit-argument) | |
| 1091 (define-key map [?6] 'digit-argument) | |
| 1092 (define-key map [?7] 'digit-argument) | |
| 1093 (define-key map [?8] 'digit-argument) | |
| 1094 (define-key map [?9] 'digit-argument) | |
| 1095 map) | |
| 1096 "Keymap used while processing \\[universal-argument].") | |
| 1097 | |
| 1098 (defvar universal-argument-num-events nil | |
| 1099 "Number of argument-specifying events read by `universal-argument'. | |
| 1100 `universal-argument-other-key' uses this to discard those events | |
| 1101 from (this-command-keys), and reread only the final command.") | |
| 1102 | |
| 1103 (defun universal-argument () | |
| 1104 "Begin a numeric argument for the following command. | |
| 1105 Digits or minus sign following \\[universal-argument] make up the numeric argument. | |
| 1106 \\[universal-argument] following the digits or minus sign ends the argument. | |
| 1107 \\[universal-argument] without digits or minus sign provides 4 as argument. | |
| 1108 Repeating \\[universal-argument] without digits or minus sign | |
| 1109 multiplies the argument by 4 each time." | |
| 1110 (interactive) | |
| 1111 (setq prefix-arg (list 4)) | |
| 1112 (setq zmacs-region-stays t) ; XEmacs | |
| 1113 (setq universal-argument-num-events (length (this-command-keys))) | |
| 1114 (setq overriding-terminal-local-map universal-argument-map)) | |
| 1115 | |
| 1116 ;; A subsequent C-u means to multiply the factor by 4 if we've typed | |
| 1117 ;; nothing but C-u's; otherwise it means to terminate the prefix arg. | |
| 1118 (defun universal-argument-more (arg) | |
| 1119 (interactive "_P") ; XEmacs | |
| 1120 (if (consp arg) | |
| 1121 (setq prefix-arg (list (* 4 (car arg)))) | |
| 1122 (setq prefix-arg arg) | |
| 1123 (setq overriding-terminal-local-map nil)) | |
| 1124 (setq universal-argument-num-events (length (this-command-keys)))) | |
| 1125 | |
| 1126 (defun negative-argument (arg) | |
| 1127 "Begin a negative numeric argument for the next command. | |
| 1128 \\[universal-argument] following digits or minus sign ends the argument." | |
| 1129 (interactive "_P") ; XEmacs | |
| 1130 (cond ((integerp arg) | |
| 1131 (setq prefix-arg (- arg))) | |
| 1132 ((eq arg '-) | |
| 1133 (setq prefix-arg nil)) | |
| 1134 (t | |
| 1135 (setq prefix-arg '-))) | |
| 1136 (setq universal-argument-num-events (length (this-command-keys))) | |
| 1137 (setq overriding-terminal-local-map universal-argument-map)) | |
| 1138 | |
| 1139 ;; XEmacs: This function not synched with FSF | |
| 1140 (defun digit-argument (arg) | |
| 1141 "Part of the numeric argument for the next command. | |
| 1142 \\[universal-argument] following digits or minus sign ends the argument." | |
| 1143 (interactive "_P") ; XEmacs | |
| 1144 (let* ((event last-command-event) | |
| 1145 (key (and (key-press-event-p event) | |
| 1146 (event-key event))) | |
| 1147 (digit (and key (characterp key) (>= key ?0) (<= key ?9) | |
| 1148 (- key ?0)))) | |
| 1149 (if (null digit) | |
| 1150 (universal-argument-other-key arg) | |
| 1151 (cond ((integerp arg) | |
| 1152 (setq prefix-arg (+ (* arg 10) | |
| 1153 (if (< arg 0) (- digit) digit)))) | |
| 1154 ((eq arg '-) | |
| 1155 ;; Treat -0 as just -, so that -01 will work. | |
| 1156 (setq prefix-arg (if (zerop digit) '- (- digit)))) | |
| 1157 (t | |
| 1158 (setq prefix-arg digit))) | |
| 1159 (setq universal-argument-num-events (length (this-command-keys))) | |
| 1160 (setq overriding-terminal-local-map universal-argument-map)))) | |
| 1161 | |
| 1162 ;; For backward compatibility, minus with no modifiers is an ordinary | |
| 1163 ;; command if digits have already been entered. | |
| 1164 (defun universal-argument-minus (arg) | |
| 1165 (interactive "_P") ; XEmacs | |
| 1166 (if (integerp arg) | |
| 1167 (universal-argument-other-key arg) | |
| 1168 (negative-argument arg))) | |
| 1169 | |
| 1170 ;; Anything else terminates the argument and is left in the queue to be | |
| 1171 ;; executed as a command. | |
| 1172 (defun universal-argument-other-key (arg) | |
| 1173 (interactive "_P") ; XEmacs | |
| 1174 (setq prefix-arg arg) | |
| 1175 (let* ((key (this-command-keys)) | |
| 1176 ;; FSF calls silly function `listify-key-sequence' here. | |
| 1177 (keylist (append key nil))) | |
| 1178 (setq unread-command-events | |
| 1179 (append (nthcdr universal-argument-num-events keylist) | |
| 1180 unread-command-events))) | |
| 1181 (reset-this-command-lengths) | |
| 1182 (setq overriding-terminal-local-map nil)) | |
| 1183 | |
| 1184 | |
| 1185 ;; XEmacs -- keep zmacs-region active. | |
| 444 | 1186 (defun forward-to-indentation (count) |
| 1187 "Move forward COUNT lines and position at first nonblank character." | |
| 428 | 1188 (interactive "_p") |
| 444 | 1189 (forward-line count) |
| 428 | 1190 (skip-chars-forward " \t")) |
| 1191 | |
| 444 | 1192 (defun backward-to-indentation (count) |
| 1193 "Move backward COUNT lines and position at first nonblank character." | |
| 428 | 1194 (interactive "_p") |
| 444 | 1195 (forward-line (- count)) |
| 428 | 1196 (skip-chars-forward " \t")) |
| 1197 | |
| 1198 (defcustom kill-whole-line nil | |
| 462 | 1199 "*If non-nil, kill the whole line if point is at the beginning. |
| 1200 Otherwise, `kill-line' kills only up to the end of the line, but not | |
| 503 | 1201 the terminating newline. |
| 462 | 1202 |
| 1203 WARNING: This is a misnamed variable! It should be called something | |
| 1204 like `kill-whole-line-when-at-beginning'. If you simply want | |
| 1205 \\[kill-line] to kill the entire current line, bind it to the function | |
| 1206 `kill-entire-line'. " | |
| 1207 :type 'boolean | |
| 428 | 1208 :group 'killing) |
| 1209 | |
| 503 | 1210 (defun kill-line-1 (arg entire-line) |
| 462 | 1211 (kill-region (if entire-line |
| 442 | 1212 (save-excursion |
| 1213 (beginning-of-line) | |
| 1214 (point)) | |
| 1215 (point)) | |
| 428 | 1216 ;; Don't shift point before doing the delete; that way, |
| 1217 ;; undo will record the right position of point. | |
| 1218 ;; FSF | |
| 1219 ; ;; It is better to move point to the other end of the kill | |
| 1220 ; ;; before killing. That way, in a read-only buffer, point | |
| 1221 ; ;; moves across the text that is copied to the kill ring. | |
| 1222 ; ;; The choice has no effect on undo now that undo records | |
| 1223 ; ;; the value of point from before the command was run. | |
| 1224 ; (progn | |
| 1225 (save-excursion | |
| 1226 (if arg | |
| 1227 (forward-line (prefix-numeric-value arg)) | |
| 1228 (if (eobp) | |
| 1229 (signal 'end-of-buffer nil)) | |
| 442 | 1230 (if (or (looking-at "[ \t]*$") |
| 462 | 1231 (or entire-line |
| 503 | 1232 (and kill-whole-line (bolp)))) |
| 428 | 1233 (forward-line 1) |
| 1234 (end-of-line))) | |
| 1235 (point)))) | |
| 1236 | |
| 462 | 1237 (defun kill-entire-line (&optional arg) |
| 1238 "Kill the entire line. | |
| 1239 With prefix argument, kill that many lines from point. Negative | |
| 1240 arguments kill lines backward. | |
| 1241 | |
| 1242 When calling from a program, nil means \"no arg\", | |
| 1243 a number counts as a prefix arg." | |
| 1244 (interactive "*P") | |
| 503 | 1245 (kill-line-1 arg t)) |
| 462 | 1246 |
| 1247 (defun kill-line (&optional arg) | |
| 1248 "Kill the rest of the current line, or the entire line. | |
| 1249 If no nonblanks there, kill thru newline. If called interactively, | |
| 1250 may kill the entire line when given no argument at the beginning of a | |
| 1251 line; see `kill-whole-line'. With prefix argument, kill that many | |
| 1252 lines from point. Negative arguments kill lines backward. | |
| 1253 | |
| 1254 WARNING: This is a misnamed function! It should be called something | |
| 1255 like `kill-to-end-of-line'. If you simply want to kill the entire | |
| 1256 current line, use `kill-entire-line'. | |
| 1257 | |
| 1258 When calling from a program, nil means \"no arg\", | |
| 1259 a number counts as a prefix arg." | |
| 1260 (interactive "*P") | |
| 503 | 1261 (kill-line-1 arg nil)) |
| 462 | 1262 |
| 428 | 1263 ;; XEmacs |
| 1264 (defun backward-kill-line nil | |
| 1265 "Kill back to the beginning of the line." | |
| 1266 (interactive) | |
| 1267 (let ((point (point))) | |
| 1268 (beginning-of-line nil) | |
| 1269 (kill-region (point) point))) | |
| 1270 | |
| 1271 | |
| 1272 ;;;; Window system cut and paste hooks. | |
| 1273 ;;; | |
| 1274 ;;; I think that kill-hooks is a better name and more general mechanism | |
| 1275 ;;; than interprogram-cut-function (from FSFmacs). I don't like the behavior | |
| 1276 ;;; of interprogram-paste-function: ^Y should always come from the kill ring, | |
| 1277 ;;; not the X selection. But if that were provided, it should be called (and | |
| 1278 ;;; behave as) yank-hooks instead. -- jwz | |
| 1279 | |
| 1280 ;; [... code snipped ...] | |
| 1281 | |
| 1282 (defcustom kill-hooks nil | |
| 1283 "*Functions run when something is added to the XEmacs kill ring. | |
| 1284 These functions are called with one argument, the string most recently | |
| 1285 cut or copied. You can use this to, for example, make the most recent | |
| 1286 kill become the X Clipboard selection." | |
| 1287 :type 'hook | |
| 1288 :group 'killing) | |
| 1289 | |
| 1290 ;;; `kill-hooks' seems not sufficient because | |
| 1291 ;;; `interprogram-cut-function' requires more variable about to rotate | |
| 1292 ;;; the cut buffers. I'm afraid to change interface of `kill-hooks', | |
| 1293 ;;; so I add it. (1997-11-03 by MORIOKA Tomohiko) | |
| 1294 | |
| 442 | 1295 (defcustom interprogram-cut-function 'own-clipboard |
| 428 | 1296 "Function to call to make a killed region available to other programs. |
| 1297 | |
| 1298 Most window systems provide some sort of facility for cutting and | |
| 1299 pasting text between the windows of different programs. | |
| 1300 This variable holds a function that Emacs calls whenever text | |
| 1301 is put in the kill ring, to make the new kill available to other | |
| 1302 programs. | |
| 1303 | |
| 1304 The function takes one or two arguments. | |
| 1305 The first argument, TEXT, is a string containing | |
| 1306 the text which should be made available. | |
| 1307 The second, PUSH, if non-nil means this is a \"new\" kill; | |
| 843 | 1308 nil means appending to an \"old\" kill. |
| 1309 | |
| 1310 One reasonable choice is `own-clipboard' (the default)." | |
| 442 | 1311 :type '(radio (function-item :tag "Send to Clipboard" |
| 1312 :format "%t\n" | |
| 1313 own-clipboard) | |
| 1314 (const :tag "None" nil) | |
| 1315 (function :tag "Other")) | |
| 1316 :group 'killing) | |
| 1317 | |
| 843 | 1318 (defcustom interprogram-paste-function 'get-clipboard-foreign |
| 428 | 1319 "Function to call to get text cut from other programs. |
| 1320 | |
| 1321 Most window systems provide some sort of facility for cutting and | |
| 1322 pasting text between the windows of different programs. | |
| 1323 This variable holds a function that Emacs calls to obtain | |
| 1324 text that other programs have provided for pasting. | |
| 1325 | |
| 1326 The function should be called with no arguments. If the function | |
| 1327 returns nil, then no other program has provided such text, and the top | |
| 1328 of the Emacs kill ring should be used. If the function returns a | |
| 1329 string, that string should be put in the kill ring as the latest kill. | |
| 1330 | |
| 1331 Note that the function should return a string only if a program other | |
| 1332 than Emacs has provided a string for pasting; if Emacs provided the | |
| 1333 most recent string, the function should return nil. If it is | |
| 1334 difficult to tell whether Emacs or some other program provided the | |
| 1335 current string, it is probably good enough to return nil if the string | |
| 843 | 1336 is equal (according to `string=') to the last text Emacs provided. |
| 1337 | |
| 1338 Reasonable choices include `get-clipboard-foreign' (the default), and | |
| 1339 functions calling `get-selection-foreign' (q.v.)." | |
| 442 | 1340 :type '(radio (function-item :tag "Get from Clipboard" |
| 1341 :format "%t\n" | |
| 843 | 1342 get-clipboard-foreign) |
| 442 | 1343 (const :tag "None" nil) |
| 1344 (function :tag "Other")) | |
| 1345 :group 'killing) | |
| 428 | 1346 |
| 1347 | |
| 1348 ;;;; The kill ring data structure. | |
| 1349 | |
| 1350 (defvar kill-ring nil | |
| 1351 "List of killed text sequences. | |
| 1352 Since the kill ring is supposed to interact nicely with cut-and-paste | |
| 1353 facilities offered by window systems, use of this variable should | |
| 1354 interact nicely with `interprogram-cut-function' and | |
| 1355 `interprogram-paste-function'. The functions `kill-new', | |
| 1356 `kill-append', and `current-kill' are supposed to implement this | |
| 1357 interaction; you may want to use them instead of manipulating the kill | |
| 1358 ring directly.") | |
| 1359 | |
| 829 | 1360 (defcustom kill-ring-max 60 |
| 428 | 1361 "*Maximum length of kill ring before oldest elements are thrown away." |
| 1362 :type 'integer | |
| 1363 :group 'killing) | |
| 1364 | |
| 1365 (defvar kill-ring-yank-pointer nil | |
| 1366 "The tail of the kill ring whose car is the last thing yanked.") | |
| 1367 | |
| 1368 (defun kill-new (string &optional replace) | |
| 1369 "Make STRING the latest kill in the kill ring. | |
| 444 | 1370 Set `kill-ring-yank-pointer' to point to it. |
| 829 | 1371 If `interprogram-cut-function' is non-nil, apply it to STRING. |
| 428 | 1372 Run `kill-hooks'. |
| 1373 Optional second argument REPLACE non-nil means that STRING will replace | |
| 1374 the front of the kill ring, rather than being added to the list." | |
| 1375 ; (and (fboundp 'menu-bar-update-yank-menu) | |
| 1376 ; (menu-bar-update-yank-menu string (and replace (car kill-ring)))) | |
| 829 | 1377 (if (and replace kill-ring) |
| 428 | 1378 (setcar kill-ring string) |
| 1379 (setq kill-ring (cons string kill-ring)) | |
| 1380 (if (> (length kill-ring) kill-ring-max) | |
| 1381 (setcdr (nthcdr (1- kill-ring-max) kill-ring) nil))) | |
| 1382 (setq kill-ring-yank-pointer kill-ring) | |
| 1383 (if interprogram-cut-function | |
| 1384 (funcall interprogram-cut-function string (not replace))) | |
| 1385 (run-hook-with-args 'kill-hooks string)) | |
| 1386 | |
| 1387 (defun kill-append (string before-p) | |
| 1388 "Append STRING to the end of the latest kill in the kill ring. | |
| 1389 If BEFORE-P is non-nil, prepend STRING to the kill. | |
| 1390 Run `kill-hooks'." | |
| 1391 (kill-new (if before-p | |
| 1392 (concat string (car kill-ring)) | |
| 1393 (concat (car kill-ring) string)) t)) | |
| 1394 | |
| 1395 (defun current-kill (n &optional do-not-move) | |
| 1396 "Rotate the yanking point by N places, and then return that kill. | |
| 1397 If N is zero, `interprogram-paste-function' is set, and calling it | |
| 1398 returns a string, then that string is added to the front of the | |
| 1399 kill ring and returned as the latest kill. | |
| 1400 If optional arg DO-NOT-MOVE is non-nil, then don't actually move the | |
| 1401 yanking point\; just return the Nth kill forward." | |
| 1402 (let ((interprogram-paste (and (= n 0) | |
| 1403 interprogram-paste-function | |
| 1404 (funcall interprogram-paste-function)))) | |
| 1405 (if interprogram-paste | |
| 1406 (progn | |
| 1407 ;; Disable the interprogram cut function when we add the new | |
| 1408 ;; text to the kill ring, so Emacs doesn't try to own the | |
| 1409 ;; selection, with identical text. | |
| 1410 (let ((interprogram-cut-function nil)) | |
| 1411 (kill-new interprogram-paste)) | |
| 1412 interprogram-paste) | |
| 1413 (or kill-ring (error "Kill ring is empty")) | |
| 1414 (let* ((tem (nthcdr (mod (- n (length kill-ring-yank-pointer)) | |
| 1415 (length kill-ring)) | |
| 1416 kill-ring))) | |
| 1417 (or do-not-move | |
| 1418 (setq kill-ring-yank-pointer tem)) | |
| 1419 (car tem))))) | |
| 1420 | |
| 1421 | |
| 1422 | |
| 1423 ;;;; Commands for manipulating the kill ring. | |
| 1424 | |
| 1425 ;; In FSF killing read-only text just pastes it into kill-ring. Which | |
| 1426 ;; is a very bad idea -- see Jamie's comment below. | |
| 1427 | |
| 1428 ;(defvar kill-read-only-ok nil | |
| 1429 ; "*Non-nil means don't signal an error for killing read-only text.") | |
| 1430 | |
| 444 | 1431 (defun kill-region (start end &optional verbose) ; verbose is XEmacs addition |
| 428 | 1432 "Kill between point and mark. |
| 1433 The text is deleted but saved in the kill ring. | |
| 1434 The command \\[yank] can retrieve it from there. | |
| 1435 \(If you want to kill and then yank immediately, use \\[copy-region-as-kill].) | |
| 1436 | |
| 1437 This is the primitive for programs to kill text (as opposed to deleting it). | |
| 1438 Supply two arguments, character numbers indicating the stretch of text | |
| 1439 to be killed. | |
| 1440 Any command that calls this function is a \"kill command\". | |
| 1441 If the previous command was also a kill command, | |
| 1442 the text killed this time appends to the text killed last time | |
| 1443 to make one entry in the kill ring." | |
| 1444 (interactive "*r\np") | |
| 1445 ; (interactive | |
| 1446 ; (let ((region-hack (and zmacs-regions (eq last-command 'yank)))) | |
| 1447 ; ;; This lets "^Y^W" work. I think this is dumb, but zwei did it. | |
| 1448 ; (if region-hack (zmacs-activate-region)) | |
| 1449 ; (prog1 | |
| 1450 ; (list (point) (mark) current-prefix-arg) | |
| 1451 ; (if region-hack (zmacs-deactivate-region))))) | |
| 444 | 1452 ;; start and end can be markers but the rest of this function is |
| 428 | 1453 ;; written as if they are only integers |
| 444 | 1454 (if (markerp start) (setq start (marker-position start))) |
| 428 | 1455 (if (markerp end) (setq end (marker-position end))) |
| 444 | 1456 (or (and start end) (if zmacs-regions ;; rewritten for I18N3 snarfing |
| 428 | 1457 (error "The region is not active now") |
| 1458 (error "The mark is not set now"))) | |
| 1459 (if verbose (if buffer-read-only | |
| 1460 (lmessage 'command "Copying %d characters" | |
| 444 | 1461 (- (max start end) (min start end))) |
| 428 | 1462 (lmessage 'command "Killing %d characters" |
| 444 | 1463 (- (max start end) (min start end))))) |
| 428 | 1464 (cond |
| 1465 | |
| 1466 ;; I don't like this large change in behavior -- jwz | |
| 1467 ;; Read-Only text means it shouldn't be deleted, so I'm restoring | |
| 1468 ;; this code, but only for text-properties and not full extents. -sb | |
| 1469 ;; If the buffer is read-only, we should beep, in case the person | |
| 1470 ;; just isn't aware of this. However, there's no harm in putting | |
| 1471 ;; the region's text in the kill ring, anyway. | |
| 1472 ((or (and buffer-read-only (not inhibit-read-only)) | |
| 444 | 1473 (text-property-not-all (min start end) (max start end) 'read-only nil)) |
| 428 | 1474 ;; This is redundant. |
| 1475 ;; (if verbose (message "Copying %d characters" | |
| 444 | 1476 ;; (- (max start end) (min start end)))) |
| 1477 (copy-region-as-kill start end) | |
| 428 | 1478 ;; ;; This should always barf, and give us the correct error. |
| 1479 ;; (if kill-read-only-ok | |
| 1480 ;; (message "Read only text copied to kill ring") | |
| 1481 (setq this-command 'kill-region) | |
| 1482 (barf-if-buffer-read-only) | |
| 1483 (signal 'buffer-read-only (list (current-buffer)))) | |
| 1484 | |
| 1485 ;; In certain cases, we can arrange for the undo list and the kill | |
| 1486 ;; ring to share the same string object. This code does that. | |
| 1487 ((not (or (eq buffer-undo-list t) | |
| 1488 (eq last-command 'kill-region) | |
| 1489 ;; Use = since positions may be numbers or markers. | |
| 444 | 1490 (= start end))) |
| 428 | 1491 ;; Don't let the undo list be truncated before we can even access it. |
| 1492 ;; FSF calls this `undo-strong-limit' | |
| 444 | 1493 (let ((undo-high-threshold (+ (- end start) 100)) |
| 428 | 1494 ;(old-list buffer-undo-list) |
| 1495 tail) | |
| 444 | 1496 (delete-region start end) |
| 428 | 1497 ;; Search back in buffer-undo-list for this string, |
| 1498 ;; in case a change hook made property changes. | |
| 1499 (setq tail buffer-undo-list) | |
| 1500 (while (and tail | |
| 1501 (not (stringp (car-safe (car-safe tail))))) ; XEmacs | |
| 1502 (pop tail)) | |
| 1503 ;; Take the same string recorded for undo | |
| 1504 ;; and put it in the kill-ring. | |
| 1505 (and tail | |
| 1506 (kill-new (car (car tail)))))) | |
| 1507 | |
| 1508 (t | |
| 1509 ;; if undo is not kept, grab the string then delete it (which won't | |
| 1510 ;; add another string to the undo list). | |
| 444 | 1511 (copy-region-as-kill start end) |
| 1512 (delete-region start end))) | |
| 428 | 1513 (setq this-command 'kill-region)) |
| 1514 | |
| 1515 ;; copy-region-as-kill no longer sets this-command, because it's confusing | |
| 1516 ;; to get two copies of the text when the user accidentally types M-w and | |
| 1517 ;; then corrects it with the intended C-w. | |
| 444 | 1518 (defun copy-region-as-kill (start end) |
| 428 | 1519 "Save the region as if killed, but don't kill it. |
| 1520 Run `kill-hooks'." | |
| 1521 (interactive "r") | |
| 1522 (if (eq last-command 'kill-region) | |
| 444 | 1523 (kill-append (buffer-substring start end) (< end start)) |
| 1524 (kill-new (buffer-substring start end))) | |
| 428 | 1525 nil) |
| 1526 | |
| 444 | 1527 (defun kill-ring-save (start end) |
| 428 | 1528 "Save the region as if killed, but don't kill it. |
| 1529 This command is similar to `copy-region-as-kill', except that it gives | |
| 1530 visual feedback indicating the extent of the region being copied." | |
| 1531 (interactive "r") | |
| 444 | 1532 (copy-region-as-kill start end) |
| 428 | 1533 ;; copy before delay, for xclipboard's benefit |
| 1534 (if (interactive-p) | |
| 444 | 1535 (let ((other-end (if (= (point) start) end start)) |
| 428 | 1536 (opoint (point)) |
| 1537 ;; Inhibit quitting so we can make a quit here | |
| 1538 ;; look like a C-g typed as a command. | |
| 1539 (inhibit-quit t)) | |
| 1540 (if (pos-visible-in-window-p other-end (selected-window)) | |
| 1541 (progn | |
| 1542 ;; FSF (I'm not sure what this does -sb) | |
| 1543 ; ;; Swap point and mark. | |
| 1544 ; (set-marker (mark-marker) (point) (current-buffer)) | |
| 1545 (goto-char other-end) | |
| 1546 (sit-for 1) | |
| 1547 ; ;; Swap back. | |
| 1548 ; (set-marker (mark-marker) other-end (current-buffer)) | |
| 1549 (goto-char opoint) | |
| 1550 ;; If user quit, deactivate the mark | |
| 1551 ;; as C-g would as a command. | |
| 1552 (and quit-flag (mark) | |
| 1553 (zmacs-deactivate-region))) | |
| 1554 ;; too noisy. -- jwz | |
| 1555 ; (let* ((killed-text (current-kill 0)) | |
| 1556 ; (message-len (min (length killed-text) 40))) | |
| 444 | 1557 ; (if (= (point) start) |
| 428 | 1558 ; ;; Don't say "killed"; that is misleading. |
| 1559 ; (message "Saved text until \"%s\"" | |
| 1560 ; (substring killed-text (- message-len))) | |
| 1561 ; (message "Saved text from \"%s\"" | |
| 1562 ; (substring killed-text 0 message-len)))) | |
| 1563 )))) | |
| 1564 | |
| 1565 (defun append-next-kill () | |
| 1566 "Cause following command, if it kills, to append to previous kill." | |
| 1567 ;; XEmacs | |
| 1568 (interactive "_") | |
| 1569 (if (interactive-p) | |
| 1570 (progn | |
| 1571 (setq this-command 'kill-region) | |
| 1572 (display-message 'command | |
| 1573 "If the next command is a kill, it will append")) | |
| 1574 (setq last-command 'kill-region))) | |
| 1575 | |
| 1576 (defun yank-pop (arg) | |
| 1577 "Replace just-yanked stretch of killed text with a different stretch. | |
| 1578 This command is allowed only immediately after a `yank' or a `yank-pop'. | |
| 1579 At such a time, the region contains a stretch of reinserted | |
| 1580 previously-killed text. `yank-pop' deletes that text and inserts in its | |
| 1581 place a different stretch of killed text. | |
| 1582 | |
| 1583 With no argument, the previous kill is inserted. | |
| 1584 With argument N, insert the Nth previous kill. | |
| 1585 If N is negative, this is a more recent kill. | |
| 1586 | |
| 1587 The sequence of kills wraps around, so that after the oldest one | |
| 1588 comes the newest one." | |
| 1589 (interactive "*p") | |
| 1590 (if (not (eq last-command 'yank)) | |
| 1591 (error "Previous command was not a yank")) | |
| 1592 (setq this-command 'yank) | |
| 1593 (let ((inhibit-read-only t) | |
| 1594 (before (< (point) (mark t)))) | |
| 1595 (delete-region (point) (mark t)) | |
| 1596 ;;(set-marker (mark-marker) (point) (current-buffer)) | |
| 1597 (set-mark (point)) | |
| 1598 (insert (current-kill arg)) | |
| 1599 (if before | |
| 1600 ;; This is like exchange-point-and-mark, but doesn't activate the mark. | |
| 1601 ;; It is cleaner to avoid activation, even though the command | |
| 1602 ;; loop would deactivate the mark because we inserted text. | |
| 1603 (goto-char (prog1 (mark t) | |
| 1604 (set-marker (mark-marker t) (point) (current-buffer)))))) | |
| 1605 nil) | |
| 1606 | |
| 1607 | |
| 1608 (defun yank (&optional arg) | |
| 1609 "Reinsert the last stretch of killed text. | |
| 1610 More precisely, reinsert the stretch of killed text most recently | |
| 1611 killed OR yanked. Put point at end, and set mark at beginning. | |
| 1612 With just C-u as argument, same but put point at beginning (and mark at end). | |
| 1613 With argument N, reinsert the Nth most recently killed stretch of killed | |
| 1614 text. | |
| 1615 See also the command \\[yank-pop]." | |
| 1616 (interactive "*P") | |
| 1617 ;; If we don't get all the way through, make last-command indicate that | |
| 1618 ;; for the following command. | |
| 1619 (setq this-command t) | |
| 1620 (push-mark (point)) | |
| 1621 (insert (current-kill (cond | |
| 1622 ((listp arg) 0) | |
| 1623 ((eq arg '-) -1) | |
| 1624 (t (1- arg))))) | |
| 1625 (if (consp arg) | |
| 1626 ;; This is like exchange-point-and-mark, but doesn't activate the mark. | |
| 1627 ;; It is cleaner to avoid activation, even though the command | |
| 1628 ;; loop would deactivate the mark because we inserted text. | |
| 1629 ;; (But it's an unnecessary kludge in XEmacs.) | |
| 1630 ;(goto-char (prog1 (mark t) | |
| 1631 ;(set-marker (mark-marker) (point) (current-buffer))))) | |
| 1632 (exchange-point-and-mark t)) | |
| 1633 ;; If we do get all the way thru, make this-command indicate that. | |
| 1634 (setq this-command 'yank) | |
| 1635 nil) | |
| 1636 | |
| 1637 (defun rotate-yank-pointer (arg) | |
| 1638 "Rotate the yanking point in the kill ring. | |
| 1639 With argument, rotate that many kills forward (or backward, if negative)." | |
| 1640 (interactive "p") | |
| 1641 (current-kill arg)) | |
| 1642 | |
| 1643 | |
| 1644 (defun insert-buffer (buffer) | |
| 1645 "Insert after point the contents of BUFFER. | |
| 1646 Puts mark after the inserted text. | |
| 1647 BUFFER may be a buffer or a buffer name." | |
| 1648 (interactive | |
| 1649 (list | |
| 1650 (progn | |
| 1651 (barf-if-buffer-read-only) | |
| 1652 (read-buffer "Insert buffer: " | |
| 1653 ;; XEmacs: we have different args | |
| 1654 (other-buffer (current-buffer) nil t) | |
| 1655 t)))) | |
| 1656 (or (bufferp buffer) | |
| 1657 (setq buffer (get-buffer buffer))) | |
| 1658 (let (start end newmark) | |
| 1659 (save-excursion | |
| 1660 (save-excursion | |
| 1661 (set-buffer buffer) | |
| 1662 (setq start (point-min) end (point-max))) | |
| 1663 (insert-buffer-substring buffer start end) | |
| 1664 (setq newmark (point))) | |
| 1665 (push-mark newmark)) | |
| 1666 nil) | |
| 1667 | |
| 1668 (defun append-to-buffer (buffer start end) | |
| 1669 "Append to specified buffer the text of the region. | |
| 1670 It is inserted into that buffer before its point. | |
| 1671 | |
| 1672 When calling from a program, give three arguments: | |
| 1673 BUFFER (or buffer name), START and END. | |
| 1674 START and END specify the portion of the current buffer to be copied." | |
| 1675 (interactive | |
| 1676 ;; XEmacs: we have different args to other-buffer | |
| 1677 (list (read-buffer "Append to buffer: " (other-buffer (current-buffer) | |
| 1678 nil t)) | |
| 1679 (region-beginning) (region-end))) | |
| 1680 (let ((oldbuf (current-buffer))) | |
| 1681 (save-excursion | |
| 1682 (set-buffer (get-buffer-create buffer)) | |
| 1683 (insert-buffer-substring oldbuf start end)))) | |
| 1684 | |
| 1685 (defun prepend-to-buffer (buffer start end) | |
| 1686 "Prepend to specified buffer the text of the region. | |
| 1687 It is inserted into that buffer after its point. | |
| 1688 | |
| 1689 When calling from a program, give three arguments: | |
| 1690 BUFFER (or buffer name), START and END. | |
| 1691 START and END specify the portion of the current buffer to be copied." | |
| 1692 (interactive "BPrepend to buffer: \nr") | |
| 1693 (let ((oldbuf (current-buffer))) | |
| 1694 (save-excursion | |
| 1695 (set-buffer (get-buffer-create buffer)) | |
| 1696 (save-excursion | |
| 1697 (insert-buffer-substring oldbuf start end))))) | |
| 1698 | |
| 1699 (defun copy-to-buffer (buffer start end) | |
| 1700 "Copy to specified buffer the text of the region. | |
| 1701 It is inserted into that buffer, replacing existing text there. | |
| 1702 | |
| 1703 When calling from a program, give three arguments: | |
| 1704 BUFFER (or buffer name), START and END. | |
| 1705 START and END specify the portion of the current buffer to be copied." | |
| 1706 (interactive "BCopy to buffer: \nr") | |
| 1707 (let ((oldbuf (current-buffer))) | |
| 1708 (save-excursion | |
| 1709 (set-buffer (get-buffer-create buffer)) | |
| 1710 (erase-buffer) | |
| 1711 (save-excursion | |
| 1712 (insert-buffer-substring oldbuf start end))))) | |
| 1713 | |
| 1714 ;FSFmacs | |
| 1715 ;(put 'mark-inactive 'error-conditions '(mark-inactive error)) | |
| 1716 ;(put 'mark-inactive 'error-message "The mark is not active now") | |
| 1717 | |
| 1718 (defun mark (&optional force buffer) | |
| 1719 "Return this buffer's mark value as integer, or nil if no mark. | |
| 1720 | |
| 1721 If `zmacs-regions' is true, then this returns nil unless the region is | |
| 1722 currently in the active (highlighted) state. With an argument of t, this | |
| 1723 returns the mark (if there is one) regardless of the active-region state. | |
| 1724 You should *generally* not use the mark unless the region is active, if | |
| 1725 the user has expressed a preference for the active-region model. | |
| 1726 | |
| 1727 If you are using this in an editing command, you are most likely making | |
| 1728 a mistake; see the documentation of `set-mark'." | |
| 1729 (setq buffer (decode-buffer buffer)) | |
| 1730 ;FSFmacs version: | |
| 1731 ; (if (or force (not transient-mark-mode) mark-active mark-even-if-inactive) | |
| 1732 ; (marker-position (mark-marker)) | |
| 1733 ; (signal 'mark-inactive nil))) | |
| 1734 (let ((m (mark-marker force buffer))) | |
| 1735 (and m (marker-position m)))) | |
| 1736 | |
| 1737 ;;;#### FSFmacs | |
| 1738 ;;; Many places set mark-active directly, and several of them failed to also | |
| 1739 ;;; run deactivate-mark-hook. This shorthand should simplify. | |
| 1740 ;(defsubst deactivate-mark () | |
| 1741 ; "Deactivate the mark by setting `mark-active' to nil. | |
| 1742 ;\(That makes a difference only in Transient Mark mode.) | |
| 1743 ;Also runs the hook `deactivate-mark-hook'." | |
| 1744 ; (if transient-mark-mode | |
| 1745 ; (progn | |
| 1746 ; (setq mark-active nil) | |
| 1747 ; (run-hooks 'deactivate-mark-hook)))) | |
| 1748 | |
| 1749 (defun set-mark (pos &optional buffer) | |
| 1750 "Set this buffer's mark to POS. Don't use this function! | |
| 1751 That is to say, don't use this function unless you want | |
| 1752 the user to see that the mark has moved, and you want the previous | |
| 1753 mark position to be lost. | |
| 1754 | |
| 1755 Normally, when a new mark is set, the old one should go on the stack. | |
| 444 | 1756 This is why most applications should use `push-mark', not `set-mark'. |
| 428 | 1757 |
| 1758 Novice Emacs Lisp programmers often try to use the mark for the wrong | |
| 1759 purposes. The mark saves a location for the user's convenience. | |
| 1760 Most editing commands should not alter the mark. | |
| 1761 To remember a location for internal use in the Lisp program, | |
| 1762 store it in a Lisp variable. Example: | |
| 1763 | |
| 444 | 1764 (let ((start (point))) (forward-line 1) (delete-region start (point)))." |
| 428 | 1765 |
| 1766 (setq buffer (decode-buffer buffer)) | |
| 1767 (set-marker (mark-marker t buffer) pos buffer)) | |
| 1768 ;; FSF | |
| 1769 ; (if pos | |
| 1770 ; (progn | |
| 1771 ; (setq mark-active t) | |
| 1772 ; (run-hooks 'activate-mark-hook) | |
| 1773 ; (set-marker (mark-marker) pos (current-buffer))) | |
| 1774 ; ;; Normally we never clear mark-active except in Transient Mark mode. | |
| 1775 ; ;; But when we actually clear out the mark value too, | |
| 1776 ; ;; we must clear mark-active in any mode. | |
| 1777 ; (setq mark-active nil) | |
| 1778 ; (run-hooks 'deactivate-mark-hook) | |
| 1779 ; (set-marker (mark-marker) nil))) | |
| 1780 | |
| 1781 (defvar mark-ring nil | |
| 442 | 1782 "The list of former marks of the current buffer, most recent first. |
| 1783 This variable is automatically buffer-local.") | |
| 428 | 1784 (make-variable-buffer-local 'mark-ring) |
| 1785 (put 'mark-ring 'permanent-local t) | |
| 1786 | |
| 442 | 1787 (defvar dont-record-current-mark nil |
| 1788 "If set to t, the current mark value should not be recorded on the mark ring. | |
| 1789 This is set by commands that manipulate the mark incidentally, to avoid | |
| 1790 cluttering the mark ring unnecessarily. Under most circumstances, you do | |
| 1791 not need to set this directly; it is automatically reset each time | |
| 1792 `push-mark' is called, according to `mark-ring-unrecorded-commands'. This | |
| 1793 variable is automatically buffer-local.") | |
| 1794 (make-variable-buffer-local 'dont-record-current-mark) | |
| 1795 (put 'dont-record-current-mark 'permanent-local t) | |
| 1796 | |
| 1797 ;; a conspiracy between push-mark and handle-pre-motion-command | |
| 1798 (defvar in-shifted-motion-command nil) | |
| 1799 | |
| 1800 (defcustom mark-ring-unrecorded-commands '(shifted-motion-commands | |
| 1801 yank | |
| 1802 mark-beginning-of-buffer | |
| 1803 mark-bob | |
| 1804 mark-defun | |
| 1805 mark-end-of-buffer | |
| 1806 mark-end-of-line | |
| 1807 mark-end-of-sentence | |
| 1808 mark-eob | |
| 1809 mark-marker | |
| 1810 mark-page | |
| 1811 mark-paragraph | |
| 1812 mark-sexp | |
| 1813 mark-whole-buffer | |
| 1814 mark-word) | |
| 1815 "*List of commands whose marks should not be recorded on the mark stack. | |
| 1816 Many commands set the mark as part of their action. Normally, all such | |
| 1817 marks get recorded onto the mark stack. However, this tends to clutter up | |
| 1818 the mark stack unnecessarily. You can control this by putting a command | |
| 1819 onto this list. Then, any marks set by the function will not be recorded. | |
| 1820 | |
| 1821 The special value `shifted-motion-commands' causes marks set as a result | |
| 1822 of selection using any shifted motion commands to not be recorded. | |
| 1823 | |
| 1824 The value `yank' affects all yank-like commands, as well as just `yank'." | |
| 1825 :type '(repeat (choice (const :tag "shifted motion commands" | |
| 462 | 1826 shifted-motion-commands) |
| 442 | 1827 (const :tag "functions that select text" |
| 1828 :inline t | |
| 462 | 1829 (mark-beginning-of-buffer |
| 1830 mark-bob | |
| 1831 mark-defun | |
| 1832 mark-end-of-buffer | |
| 1833 mark-end-of-line | |
| 1834 mark-end-of-sentence | |
| 1835 mark-eob | |
| 1836 mark-marker | |
| 1837 mark-page | |
| 1838 mark-paragraph | |
| 1839 mark-sexp | |
| 1840 mark-whole-buffer | |
| 1841 mark-word)) | |
| 442 | 1842 (const :tag "functions that paste text" |
| 462 | 1843 yank) |
| 442 | 1844 function)) |
| 1845 :group 'killing) | |
| 1846 | |
| 428 | 1847 (defcustom mark-ring-max 16 |
| 1848 "*Maximum size of mark ring. Start discarding off end if gets this big." | |
| 1849 :type 'integer | |
| 1850 :group 'killing) | |
| 1851 | |
| 1852 (defvar global-mark-ring nil | |
| 1853 "The list of saved global marks, most recent first.") | |
| 1854 | |
| 1855 (defcustom global-mark-ring-max 16 | |
| 1856 "*Maximum size of global mark ring. \ | |
| 1857 Start discarding off end if gets this big." | |
| 1858 :type 'integer | |
| 1859 :group 'killing) | |
| 1860 | |
| 1861 (defun set-mark-command (arg) | |
| 1862 "Set mark at where point is, or jump to mark. | |
| 1863 With no prefix argument, set mark, push old mark position on local mark | |
| 1864 ring, and push mark on global mark ring. | |
| 1865 With argument, jump to mark, and pop a new position for mark off the ring | |
| 1866 \(does not affect global mark ring\). | |
| 1867 | |
| 442 | 1868 The mark ring is a per-buffer stack of marks, most recent first. Its |
| 1869 maximum length is controlled by `mark-ring-max'. Generally, when new | |
| 1870 marks are set, the current mark is pushed onto the stack. You can pop | |
| 1871 marks off the stack using \\[universal-argument] \\[set-mark-command]. The term \"ring\" is used because when | |
| 1872 you pop a mark off the stack, the current mark value is pushed onto the | |
| 1873 far end of the stack. If this is confusing, just think of the mark ring | |
| 1874 as a stack. | |
| 1875 | |
| 428 | 1876 Novice Emacs Lisp programmers often try to use the mark for the wrong |
| 1877 purposes. See the documentation of `set-mark' for more information." | |
| 1878 (interactive "P") | |
| 1879 (if (null arg) | |
| 1880 (push-mark nil nil t) | |
| 1881 (if (null (mark t)) | |
| 1882 (error "No mark set in this buffer") | |
| 442 | 1883 (if dont-record-current-mark (pop-mark)) |
| 428 | 1884 (goto-char (mark t)) |
| 1885 (pop-mark)))) | |
| 1886 | |
| 1887 ;; XEmacs: Extra parameter | |
| 1888 (defun push-mark (&optional location nomsg activate-region buffer) | |
| 1889 "Set mark at LOCATION (point, by default) and push old mark on mark ring. | |
| 1890 If the last global mark pushed was not in the current buffer, | |
| 1891 also push LOCATION on the global mark ring. | |
| 1892 Display `Mark set' unless the optional second arg NOMSG is non-nil. | |
| 1893 Activate mark if optional third arg ACTIVATE-REGION non-nil. | |
| 1894 | |
| 1895 Novice Emacs Lisp programmers often try to use the mark for the wrong | |
| 1896 purposes. See the documentation of `set-mark' for more information." | |
| 1897 (setq buffer (decode-buffer buffer)) ; XEmacs | |
| 442 | 1898 (if (or dont-record-current-mark (null (mark t buffer))) ; XEmacs |
| 428 | 1899 nil |
| 1900 ;; The save-excursion / set-buffer is necessary because mark-ring | |
| 1901 ;; is a buffer local variable | |
| 1902 (save-excursion | |
| 1903 (set-buffer buffer) | |
| 1904 (setq mark-ring (cons (copy-marker (mark-marker t buffer)) mark-ring)) | |
| 1905 (if (> (length mark-ring) mark-ring-max) | |
| 1906 (progn | |
| 1907 (move-marker (car (nthcdr mark-ring-max mark-ring)) nil buffer) | |
| 1908 (setcdr (nthcdr (1- mark-ring-max) mark-ring) nil))))) | |
| 1909 (set-mark (or location (point buffer)) buffer) | |
| 1910 ; (set-marker (mark-marker) (or location (point)) (current-buffer)) ; FSF | |
| 1911 ;; Now push the mark on the global mark ring. | |
| 442 | 1912 (if (and (not dont-record-current-mark) |
| 1913 (or (null global-mark-ring) | |
| 1914 (not (eq (marker-buffer (car global-mark-ring)) buffer)))) | |
| 428 | 1915 ;; The last global mark pushed wasn't in this same buffer. |
| 1916 (progn | |
| 1917 (setq global-mark-ring (cons (copy-marker (mark-marker t buffer)) | |
| 1918 global-mark-ring)) | |
| 1919 (if (> (length global-mark-ring) global-mark-ring-max) | |
| 1920 (progn | |
| 1921 (move-marker (car (nthcdr global-mark-ring-max global-mark-ring)) | |
| 1922 nil buffer) | |
| 1923 (setcdr (nthcdr (1- global-mark-ring-max) global-mark-ring) nil))))) | |
| 442 | 1924 (setq dont-record-current-mark |
| 1925 (not (not (or (and in-shifted-motion-command | |
| 1926 (memq 'shifted-motion-commands | |
| 1927 mark-ring-unrecorded-commands)) | |
| 1928 (memq this-command mark-ring-unrecorded-commands))))) | |
| 1929 (or dont-record-current-mark nomsg executing-kbd-macro | |
| 1930 (> (minibuffer-depth) 0) | |
| 428 | 1931 (display-message 'command "Mark set")) |
| 1932 (if activate-region | |
| 1933 (progn | |
| 1934 (setq zmacs-region-stays t) | |
| 1935 (zmacs-activate-region))) | |
| 1936 ; (if (or activate (not transient-mark-mode)) ; FSF | |
| 1937 ; (set-mark (mark t))) ; FSF | |
| 1938 nil) | |
| 1939 | |
| 1940 (defun pop-mark () | |
| 1941 "Pop off mark ring into the buffer's actual mark. | |
| 1942 Does not set point. Does nothing if mark ring is empty." | |
| 1943 (if mark-ring | |
| 1944 (progn | |
| 1945 (setq mark-ring (nconc mark-ring (list (copy-marker (mark-marker t))))) | |
| 1946 (set-mark (car mark-ring)) | |
| 1947 (move-marker (car mark-ring) nil) | |
| 1948 (if (null (mark t)) (ding)) | |
| 1949 (setq mark-ring (cdr mark-ring))))) | |
| 1950 | |
| 1951 (define-function 'exchange-dot-and-mark 'exchange-point-and-mark) | |
| 1952 (defun exchange-point-and-mark (&optional dont-activate-region) | |
| 1953 "Put the mark where point is now, and point where the mark is now. | |
| 1954 The mark is activated unless DONT-ACTIVATE-REGION is non-nil." | |
| 1955 (interactive nil) | |
| 1956 (let ((omark (mark t))) | |
| 1957 (if (null omark) | |
| 1958 (error "No mark set in this buffer")) | |
| 1959 (set-mark (point)) | |
| 1960 (goto-char omark) | |
| 1961 (or dont-activate-region (zmacs-activate-region)) ; XEmacs | |
| 1962 nil)) | |
| 1963 | |
| 1964 ;; XEmacs | |
| 1965 (defun mark-something (mark-fn movement-fn arg) | |
| 1966 "internal function used by mark-sexp, mark-word, etc." | |
| 1967 (let (newmark (pushp t)) | |
| 1968 (save-excursion | |
| 1969 (if (and (eq last-command mark-fn) (mark)) | |
| 1970 ;; Extend the previous state in the same direction: | |
| 1971 (progn | |
| 1972 (if (< (mark) (point)) (setq arg (- arg))) | |
| 1973 (goto-char (mark)) | |
| 1974 (setq pushp nil))) | |
| 1975 (funcall movement-fn arg) | |
| 1976 (setq newmark (point))) | |
| 1977 (if pushp | |
| 1978 (push-mark newmark nil t) | |
| 1979 ;; Do not mess with the mark stack, but merely adjust the previous state: | |
| 1980 (set-mark newmark) | |
| 1981 (activate-region)))) | |
| 1982 | |
| 1983 ;(defun transient-mark-mode (arg) | |
| 1984 ; "Toggle Transient Mark mode. | |
| 1985 ;With arg, turn Transient Mark mode on if arg is positive, off otherwise. | |
| 1986 ; | |
| 1987 ;In Transient Mark mode, when the mark is active, the region is highlighted. | |
| 1988 ;Changing the buffer \"deactivates\" the mark. | |
| 1989 ;So do certain other operations that set the mark | |
| 1990 ;but whose main purpose is something else--for example, | |
| 1991 ;incremental search, \\[beginning-of-buffer], and \\[end-of-buffer]." | |
| 1992 ; (interactive "P") | |
| 1993 ; (setq transient-mark-mode | |
| 1994 ; (if (null arg) | |
| 1995 ; (not transient-mark-mode) | |
| 1996 ; (> (prefix-numeric-value arg) 0)))) | |
| 1997 | |
| 1998 (defun pop-global-mark () | |
| 1999 "Pop off global mark ring and jump to the top location." | |
| 2000 (interactive) | |
| 2001 ;; Pop entries which refer to non-existent buffers. | |
| 2002 (while (and global-mark-ring (not (marker-buffer (car global-mark-ring)))) | |
| 2003 (setq global-mark-ring (cdr global-mark-ring))) | |
| 2004 (or global-mark-ring | |
| 2005 (error "No global mark set")) | |
| 2006 (let* ((marker (car global-mark-ring)) | |
| 2007 (buffer (marker-buffer marker)) | |
| 2008 (position (marker-position marker))) | |
| 2009 (setq global-mark-ring (nconc (cdr global-mark-ring) | |
| 2010 (list (car global-mark-ring)))) | |
| 2011 (set-buffer buffer) | |
| 2012 (or (and (>= position (point-min)) | |
| 2013 (<= position (point-max))) | |
| 2014 (widen)) | |
| 2015 (goto-char position) | |
| 2016 (switch-to-buffer buffer))) | |
| 2017 | |
| 2018 | |
| 2019 (defcustom signal-error-on-buffer-boundary t | |
| 462 | 2020 "*If Non-nil, beep or signal an error when moving past buffer boundary. |
| 428 | 2021 The commands that honor this variable are |
| 2022 | |
| 2023 forward-char-command | |
| 2024 backward-char-command | |
| 2025 next-line | |
| 2026 previous-line | |
| 2027 scroll-up-command | |
| 2028 scroll-down-command" | |
| 2029 :type 'boolean | |
| 2030 :group 'editing-basics) | |
| 2031 | |
| 3361 | 2032 (defcustom next-line-add-newlines nil |
| 428 | 2033 "*If non-nil, `next-line' inserts newline when the point is at end of buffer. |
| 3361 | 2034 This behavior used to be the default, but is now considered an unnecessary and |
| 2035 unwanted side-effect." | |
| 428 | 2036 :type 'boolean |
| 2037 :group 'editing-basics) | |
| 2038 | |
| 442 | 2039 (defcustom shifted-motion-keys-select-region t |
| 2040 "*If non-nil, shifted motion keys select text, like in MS Windows. | |
| 462 | 2041 |
| 2042 More specifically, if a keystroke that matches one of the key | |
| 2043 specifications in `motion-keys-for-shifted-motion' is pressed along | |
| 2044 with the Shift key, and the command invoked moves the cursor and | |
| 2045 preserves the active region (see `zmacs-region-stays'), the | |
| 2046 intervening text will be added to the active region. | |
| 2047 | |
| 2048 When the region has been enabled or augmented as a result of a shifted | |
| 2049 motion key, an unshifted motion key will normally deselect the region. | |
| 2485 | 2050 However, if `unshifted-motion-keys-deselect-region' is nil, the region |
| 462 | 2051 will remain active, augmented by the characters moved over by this |
| 2052 motion key. | |
| 2053 | |
| 2054 This functionality is specifically interpreted in terms of keys, and | |
| 2055 *NOT* in terms of particular commands, because that produces the most | |
| 2056 intuitive behavior: `forward-char' will work with shifted motion | |
| 2057 when invoked by `right' but not `C-f', and user-written motion commands | |
| 2058 bound to motion keys will automatically work with shifted motion." | |
| 442 | 2059 :type 'boolean |
| 2060 :group 'editing-basics) | |
| 2061 | |
| 2062 (defcustom unshifted-motion-keys-deselect-region t | |
| 2063 "*If non-nil, unshifted motion keys deselect a shifted-motion region. | |
| 462 | 2064 This only occurs after a region has been selected or augmented using |
| 2065 shifted motion keys (not when using the traditional set-mark-then-move | |
| 2066 method), and has no effect if `shifted-motion-keys-select-region' is | |
| 2067 nil." | |
| 442 | 2068 :type 'boolean |
| 2069 :group 'editing-basics) | |
| 2070 | |
| 462 | 2071 (defcustom motion-keys-for-shifted-motion |
| 1261 | 2072 ;; meta-shift-home/end are NOT shifted motion commands. |
| 2073 '(left right up down (home) (control home) (meta control home) | |
| 2074 (end) (control end) (meta control end) prior next | |
| 2075 kp-left kp-right kp-up kp-down (kp-home) (control kp-home) | |
| 2076 (meta control kp-home) (kp-end) (control kp-end) (meta control kp-end) | |
| 2077 kp-prior kp-next) | |
| 462 | 2078 "*List of keys considered motion keys for the purpose of shifted selection. |
| 2079 When one of these keys is pressed along with the Shift key, and the | |
| 2080 command invoked moves the cursor and preserves the active region (see | |
| 2081 `zmacs-region-stays'), the intervening text will be added to the active | |
| 2082 region. See `shifted-motion-keys-select-region' for more details. | |
| 2083 | |
| 2084 Each entry should be a keysym or a list (MODIFIERS ... KEYSYM), | |
| 2085 i.e. zero or more modifiers followed by a keysym. When a keysym alone | |
| 2086 is given, a keystroke consisting of that keysym, with or without any | |
| 2087 modifiers, is considered a motion key. When the list form is given, | |
| 2088 only a keystroke with exactly those modifiers and no others (with the | |
| 2089 exception of the Shift key) is considered a motion key. | |
| 2090 | |
| 2091 NOTE: Currently, the keysym cannot be a non-alphabetic character key | |
| 2092 such as the `=/+' key. In any case, the shifted-motion paradigm does | |
| 2093 not make much sense with those keys. The keysym can, however, be an | |
| 2094 alphabetic key without problem, and you can specify the key using | |
| 2095 either a character or a symbol, uppercase or lowercase." | |
| 2096 :type '(repeat (choice (const :tag "normal cursor-pad (\"gray\") keys" | |
| 2097 :inline t | |
| 1261 | 2098 (left |
| 2099 right up down | |
| 2100 (home) (control home) (meta control home) | |
| 2101 (end) (control end) (meta control end) | |
| 2102 prior next)) | |
| 462 | 2103 (const :tag "keypad motion keys" |
| 2104 :inline t | |
| 1261 | 2105 (kp-left |
| 2106 kp-right kp-up kp-down | |
| 2107 (kp-home) (control kp-home) | |
| 2108 (meta control kp-home) | |
| 2109 (kp-end) (control kp-end) | |
| 2110 (meta control kp-end) | |
| 2111 kp-prior kp-next)) | |
| 462 | 2112 (const :tag "alphabetic motion keys" |
| 2113 :inline t | |
| 2114 ((control b) (control f) | |
| 2115 (control p) (control n) | |
| 2116 (control a) (control e) | |
| 2117 (control v) (meta v) | |
| 2118 (meta b) (meta f) | |
| 2119 (meta a) (meta e) | |
| 2120 (meta m) ; back-to-indentation | |
| 2121 (meta r) ; move-to-window-line | |
| 2122 (meta control b) (meta control f) | |
| 2123 (meta control p) (meta control n) | |
| 2124 (meta control a) (meta control e) | |
| 2125 (meta control d) ;; down-list | |
| 2126 (meta control u) ;; backward-up-list | |
| 2127 )) | |
| 2128 symbol)) | |
| 2129 :group 'editing-basics) | |
| 2130 | |
| 442 | 2131 (defun handle-pre-motion-command-current-command-is-motion () |
| 2132 (and (key-press-event-p last-input-event) | |
|
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2133 (labels |
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2134 ((keysyms-equal (a b) |
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2135 (when (and |
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2136 ;; As of now, none of the elements of |
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2137 ;; motion-keys-for-shifted-motion are non-symbols; |
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2138 ;; this redundant check saves a few hundred |
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2139 ;; funcalls on startup. |
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2140 (not (symbolp b)) |
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2141 (characterp b)) |
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2142 (setf (car char-list) b |
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2143 b (intern (concat char-list nil)))) |
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2144 (eq a b))) |
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2145 (declare (inline keysyms-equal) (special char-list)) |
|
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2146 (loop |
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2147 for keysym in motion-keys-for-shifted-motion |
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2148 with key = (event-key last-input-event) |
|
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2149 with mods = (delete* 'shift (event-modifiers last-input-event)) |
|
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2150 with char-list = '(?a) ;; Some random character; the list will be |
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2151 ;; modified in the constants vector over |
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2152 ;; time. |
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2153 initially (if (and (not (symbolp key)) (characterp key)) |
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2154 (setf (car char-list) key |
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2155 key (intern (concat char-list nil)))) |
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2156 thereis (if (listp keysym) |
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2157 (and (equal mods (butlast keysym)) |
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2158 (keysyms-equal |
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2159 key (car (last keysym)))) |
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2160 (keysyms-equal key keysym)))))) |
| 444 | 2161 |
| 442 | 2162 (defun handle-pre-motion-command () |
| 462 | 2163 (if (and |
| 442 | 2164 (handle-pre-motion-command-current-command-is-motion) |
| 2165 zmacs-regions | |
| 2166 shifted-motion-keys-select-region | |
| 2167 (not (region-active-p)) | |
| 462 | 2168 ;; Special-case alphabetic keysyms, because the `shift' |
| 2169 ;; modifier does not appear on them. (Unfortunately, we have no | |
| 2170 ;; way of determining Shift-key status on non-alphabetic ASCII | |
| 2171 ;; keysyms. However, in this case, using Shift will invoke a | |
| 2172 ;; separate command from the non-shifted version, so the | |
| 2173 ;; "shifted motion" paradigm makes no sense.) | |
| 2174 (or (memq 'shift (event-modifiers last-input-event)) | |
| 2175 (let ((key (event-key last-input-event))) | |
| 2176 (and (characterp key) | |
| 2177 (not (eq key (downcase key))))))) | |
| 442 | 2178 (let ((in-shifted-motion-command t)) |
| 2179 (push-mark nil nil t)))) | |
| 2180 | |
| 2181 (defun handle-post-motion-command () | |
| 2182 (if | |
| 2183 (and | |
| 2184 (handle-pre-motion-command-current-command-is-motion) | |
| 2185 zmacs-regions | |
| 2186 (region-active-p)) | |
| 462 | 2187 ;; Special-case alphabetic keysyms, because the `shift' |
| 2188 ;; modifier does not appear on them. See above. | |
| 2189 (cond ((or (memq 'shift (event-modifiers last-input-event)) | |
| 2190 (let ((key (event-key last-input-event))) | |
| 2191 (and (characterp key) | |
| 2192 (not (eq key (downcase key)))))) | |
| 442 | 2193 (if shifted-motion-keys-select-region |
| 2194 (putf this-command-properties 'shifted-motion-command t)) | |
| 2195 (setq zmacs-region-stays t)) | |
| 2196 ((and (getf last-command-properties 'shifted-motion-command) | |
| 2197 unshifted-motion-keys-deselect-region) | |
| 487 | 2198 (setq zmacs-region-stays nil))))) |
| 442 | 2199 |
| 428 | 2200 (defun forward-char-command (&optional arg buffer) |
| 2201 "Move point right ARG characters (left if ARG negative) in BUFFER. | |
| 2202 On attempt to pass end of buffer, stop and signal `end-of-buffer'. | |
| 2203 On attempt to pass beginning of buffer, stop and signal `beginning-of-buffer'. | |
| 2204 Error signaling is suppressed if `signal-error-on-buffer-boundary' | |
| 462 | 2205 is nil. If BUFFER is nil, the current buffer is assumed. |
| 2206 | |
| 2207 The characters that are moved over may be added to the current selection | |
| 2208 \(i.e. active region) if the Shift key is held down, a motion key is used | |
| 2209 to invoke this command, and `shifted-motion-keys-select-region' is t; see | |
| 2210 the documentation for this variable for more details." | |
| 428 | 2211 (interactive "_p") |
| 2212 (if signal-error-on-buffer-boundary | |
| 2213 (forward-char arg buffer) | |
| 2214 (condition-case nil | |
| 2215 (forward-char arg buffer) | |
| 2216 (beginning-of-buffer nil) | |
| 2217 (end-of-buffer nil)))) | |
| 2218 | |
| 2219 (defun backward-char-command (&optional arg buffer) | |
| 2220 "Move point left ARG characters (right if ARG negative) in BUFFER. | |
| 2221 On attempt to pass end of buffer, stop and signal `end-of-buffer'. | |
| 2222 On attempt to pass beginning of buffer, stop and signal `beginning-of-buffer'. | |
| 2223 Error signaling is suppressed if `signal-error-on-buffer-boundary' | |
| 462 | 2224 is nil. If BUFFER is nil, the current buffer is assumed. |
| 2225 | |
| 2226 The characters that are moved over may be added to the current selection | |
| 2227 \(i.e. active region) if the Shift key is held down, a motion key is used | |
| 2228 to invoke this command, and `shifted-motion-keys-select-region' is t; see | |
| 2229 the documentation for this variable for more details." | |
| 428 | 2230 (interactive "_p") |
| 2231 (if signal-error-on-buffer-boundary | |
| 2232 (backward-char arg buffer) | |
| 2233 (condition-case nil | |
| 2234 (backward-char arg buffer) | |
| 2235 (beginning-of-buffer nil) | |
| 2236 (end-of-buffer nil)))) | |
| 2237 | |
| 442 | 2238 (defun scroll-up-one () |
| 2239 "Scroll text of current window upward one line. | |
| 2240 On attempt to scroll past end of buffer, `end-of-buffer' is signaled. | |
| 2241 On attempt to scroll past beginning of buffer, `beginning-of-buffer' is | |
| 2242 signaled. | |
| 2243 | |
| 2244 If `signal-error-on-buffer-boundary' is nil, attempts to scroll past buffer | |
| 2245 boundaries do not cause an error to be signaled." | |
| 2246 (interactive "_") | |
| 2247 (scroll-up-command 1)) | |
| 2248 | |
| 428 | 2249 (defun scroll-up-command (&optional n) |
| 444 | 2250 "Scroll current window upward N lines; or near full screen if N is nil. |
| 428 | 2251 A near full screen is `next-screen-context-lines' less than a full screen. |
| 444 | 2252 Negative N means scroll downward. |
| 428 | 2253 When calling from a program, supply a number as argument or nil. |
| 2254 On attempt to scroll past end of buffer, `end-of-buffer' is signaled. | |
| 2255 On attempt to scroll past beginning of buffer, `beginning-of-buffer' is | |
| 2256 signaled. | |
| 2257 | |
| 462 | 2258 The characters that are moved over may be added to the current selection |
| 2259 \(i.e. active region) if the Shift key is held down, a motion key is used | |
| 2260 to invoke this command, and `shifted-motion-keys-select-region' is t; see | |
| 2261 the documentation for this variable for more details. | |
| 2262 | |
| 428 | 2263 If `signal-error-on-buffer-boundary' is nil, attempts to scroll past buffer |
| 2264 boundaries do not cause an error to be signaled." | |
| 2265 (interactive "_P") | |
| 2266 (if signal-error-on-buffer-boundary | |
| 2267 (scroll-up n) | |
| 2268 (condition-case nil | |
| 2269 (scroll-up n) | |
| 2270 (beginning-of-buffer nil) | |
| 2271 (end-of-buffer nil)))) | |
| 2272 | |
| 442 | 2273 (defun scroll-down-one () |
| 2274 "Scroll text of current window downward one line. | |
| 2275 On attempt to scroll past end of buffer, `end-of-buffer' is signaled. | |
| 2276 On attempt to scroll past beginning of buffer, `beginning-of-buffer' is | |
| 2277 signaled. | |
| 2278 | |
| 2279 If `signal-error-on-buffer-boundary' is nil, attempts to scroll past buffer | |
| 2280 boundaries do not cause an error to be signaled." | |
| 2281 (interactive "_") | |
| 2282 (scroll-down-command 1)) | |
| 2283 | |
| 428 | 2284 (defun scroll-down-command (&optional n) |
| 444 | 2285 "Scroll current window downward N lines; or near full screen if N is nil. |
| 428 | 2286 A near full screen is `next-screen-context-lines' less than a full screen. |
| 444 | 2287 Negative N means scroll upward. |
| 428 | 2288 When calling from a program, supply a number as argument or nil. |
| 2289 On attempt to scroll past end of buffer, `end-of-buffer' is signaled. | |
| 2290 On attempt to scroll past beginning of buffer, `beginning-of-buffer' is | |
| 2291 signaled. | |
| 2292 | |
| 2293 If `signal-error-on-buffer-boundary' is nil, attempts to scroll past buffer | |
| 462 | 2294 boundaries do not cause an error to be signaled. |
| 2295 | |
| 2296 The characters that are moved over may be added to the current selection | |
| 2297 \(i.e. active region) if the Shift key is held down, a motion key is used | |
| 2298 to invoke this command, and `shifted-motion-keys-select-region' is t; see | |
| 2299 the documentation for this variable for more details." | |
| 428 | 2300 (interactive "_P") |
| 2301 (if signal-error-on-buffer-boundary | |
| 2302 (scroll-down n) | |
| 2303 (condition-case nil | |
| 2304 (scroll-down n) | |
| 2305 (beginning-of-buffer nil) | |
| 2306 (end-of-buffer nil)))) | |
| 2307 | |
| 444 | 2308 (defun next-line (count) |
| 2309 "Move cursor vertically down COUNT lines. | |
| 428 | 2310 If there is no character in the target line exactly under the current column, |
| 2311 the cursor is positioned after the character in that line which spans this | |
| 2312 column, or at the end of the line if it is not long enough. | |
| 2313 | |
| 2314 If there is no line in the buffer after this one, behavior depends on the | |
| 2315 value of `next-line-add-newlines'. If non-nil, it inserts a newline character | |
| 2316 to create a line, and moves the cursor to that line. Otherwise it moves the | |
| 2439 | 2317 cursor to the end of the buffer. If `signal-error-on-buffer-boundary' is |
| 2318 non-nil and you attempt to move past a buffer boundary, XEmacs will ring the | |
| 2319 bell using `ding'. | |
| 428 | 2320 |
| 2321 The command \\[set-goal-column] can be used to create | |
| 2322 a semipermanent goal column to which this command always moves. | |
| 2323 Then it does not try to move vertically. This goal column is stored | |
| 2324 in `goal-column', which is nil when there is none. | |
| 2325 | |
| 462 | 2326 The characters that are moved over may be added to the current selection |
| 2327 \(i.e. active region) if the Shift key is held down, a motion key is used | |
| 2328 to invoke this command, and `shifted-motion-keys-select-region' is t; see | |
| 2329 the documentation for this variable for more details. | |
| 2330 | |
| 428 | 2331 If you are thinking of using this in a Lisp program, consider |
| 2332 using `forward-line' instead. It is usually easier to use | |
| 2333 and more reliable (no dependence on goal column, etc.)." | |
| 442 | 2334 (interactive "_p") |
| 444 | 2335 (if (and next-line-add-newlines (= count 1)) |
| 428 | 2336 (let ((opoint (point))) |
| 2337 (end-of-line) | |
| 2338 (if (eobp) | |
| 2339 (newline 1) | |
| 2340 (goto-char opoint) | |
| 444 | 2341 (line-move count))) |
| 428 | 2342 (if (interactive-p) |
| 2343 ;; XEmacs: Not sure what to do about this. It's inconsistent. -sb | |
| 2344 (condition-case nil | |
| 444 | 2345 (line-move count) |
| 428 | 2346 ((beginning-of-buffer end-of-buffer) |
| 2347 (when signal-error-on-buffer-boundary | |
| 2348 (ding nil 'buffer-bound)))) | |
| 444 | 2349 (line-move count))) |
| 428 | 2350 nil) |
| 2351 | |
| 444 | 2352 (defun previous-line (count) |
| 2353 "Move cursor vertically up COUNT lines. | |
| 428 | 2354 If there is no character in the target line exactly over the current column, |
| 2355 the cursor is positioned after the character in that line which spans this | |
| 2356 column, or at the end of the line if it is not long enough. | |
| 2357 | |
| 2358 The command \\[set-goal-column] can be used to create | |
| 2359 a semipermanent goal column to which this command always moves. | |
| 2360 Then it does not try to move vertically. | |
| 2361 | |
| 462 | 2362 The characters that are moved over may be added to the current selection |
| 2363 \(i.e. active region) if the Shift key is held down, a motion key is used | |
| 2364 to invoke this command, and `shifted-motion-keys-select-region' is t; see | |
| 2365 the documentation for this variable for more details. | |
| 2366 | |
| 2439 | 2367 If `signal-error-on-buffer-boundary' is non-nil and you attempt to move past |
| 2368 a buffer boundary, XEmacs will ring the bell using `ding'. | |
| 2369 | |
| 428 | 2370 If you are thinking of using this in a Lisp program, consider using |
| 2371 `forward-line' with a negative argument instead. It is usually easier | |
| 2372 to use and more reliable (no dependence on goal column, etc.)." | |
| 442 | 2373 (interactive "_p") |
| 428 | 2374 (if (interactive-p) |
| 2375 (condition-case nil | |
| 444 | 2376 (line-move (- count)) |
| 428 | 2377 ((beginning-of-buffer end-of-buffer) |
| 2378 (when signal-error-on-buffer-boundary ; XEmacs | |
| 2379 (ding nil 'buffer-bound)))) | |
| 444 | 2380 (line-move (- count))) |
| 428 | 2381 nil) |
| 2382 | |
| 442 | 2383 (defcustom block-movement-size 6 |
| 2384 "*Number of lines that \"block movement\" commands (\\[forward-block-of-lines], \\[backward-block-of-lines]) move by." | |
| 2385 :type 'integer | |
| 2386 :group 'editing-basics) | |
| 2387 | |
| 2388 (defun backward-block-of-lines () | |
| 2389 "Move backward by one \"block\" of lines. | |
| 2390 The number of lines that make up a block is controlled by | |
| 462 | 2391 `block-movement-size', which defaults to 6. |
| 2392 | |
| 2393 The characters that are moved over may be added to the current selection | |
| 2394 \(i.e. active region) if the Shift key is held down, a motion key is used | |
| 2395 to invoke this command, and `shifted-motion-keys-select-region' is t; see | |
| 2396 the documentation for this variable for more details." | |
| 442 | 2397 (interactive "_") |
| 2398 (forward-line (- block-movement-size))) | |
| 2399 | |
| 2400 (defun forward-block-of-lines () | |
| 2401 "Move forward by one \"block\" of lines. | |
| 2402 The number of lines that make up a block is controlled by | |
| 462 | 2403 `block-movement-size', which defaults to 6. |
| 2404 | |
| 2405 The characters that are moved over may be added to the current selection | |
| 2406 \(i.e. active region) if the Shift key is held down, a motion key is used | |
| 2407 to invoke this command, and `shifted-motion-keys-select-region' is t; see | |
| 2408 the documentation for this variable for more details." | |
| 442 | 2409 (interactive "_") |
| 2410 (forward-line block-movement-size)) | |
| 2411 | |
| 428 | 2412 (defcustom track-eol nil |
| 2413 "*Non-nil means vertical motion starting at end of line keeps to ends of lines. | |
| 2414 This means moving to the end of each line moved onto. | |
| 2415 The beginning of a blank line does not count as the end of a line." | |
| 2416 :type 'boolean | |
| 2417 :group 'editing-basics) | |
| 2418 | |
| 2419 (defcustom goal-column nil | |
| 2420 "*Semipermanent goal column for vertical motion, as set by \\[set-goal-column], or nil." | |
| 2421 :type '(choice integer (const :tag "None" nil)) | |
| 2422 :group 'editing-basics) | |
| 2423 (make-variable-buffer-local 'goal-column) | |
| 2424 | |
| 2425 (defvar temporary-goal-column 0 | |
| 2426 "Current goal column for vertical motion. | |
| 2427 It is the column where point was | |
| 2428 at the start of current run of vertical motion commands. | |
| 2429 When the `track-eol' feature is doing its job, the value is 9999.") | |
| 2430 (make-variable-buffer-local 'temporary-goal-column) | |
| 2431 | |
| 2432 ;XEmacs: not yet ported, so avoid compiler warnings | |
| 2433 (eval-when-compile | |
| 2434 (defvar inhibit-point-motion-hooks)) | |
| 2435 | |
| 2436 (defcustom line-move-ignore-invisible nil | |
| 2437 "*Non-nil means \\[next-line] and \\[previous-line] ignore invisible lines. | |
| 2438 Use with care, as it slows down movement significantly. Outline mode sets this." | |
| 2439 :type 'boolean | |
| 2440 :group 'editing-basics) | |
| 2441 | |
| 2442 ;; This is the guts of next-line and previous-line. | |
| 444 | 2443 ;; Count says how many lines to move. |
| 2444 (defun line-move (count) | |
| 428 | 2445 ;; Don't run any point-motion hooks, and disregard intangibility, |
| 2446 ;; for intermediate positions. | |
| 2447 (let ((inhibit-point-motion-hooks t) | |
| 2448 (opoint (point)) | |
| 2449 new) | |
| 2450 (unwind-protect | |
| 2451 (progn | |
| 2452 (if (not (or (eq last-command 'next-line) | |
| 2453 (eq last-command 'previous-line))) | |
| 2454 (setq temporary-goal-column | |
| 2455 (if (and track-eol (eolp) | |
| 444 | 2456 ;; Don't count start of empty line as end of line |
| 428 | 2457 ;; unless we just did explicit end-of-line. |
| 2458 (or (not (bolp)) (eq last-command 'end-of-line))) | |
| 2459 9999 | |
| 2460 (current-column)))) | |
| 2461 (if (and (not (integerp selective-display)) | |
| 2462 (not line-move-ignore-invisible)) | |
| 2463 ;; Use just newline characters. | |
| 444 | 2464 (or (if (> count 0) |
| 2465 (progn (if (> count 1) (forward-line (1- count))) | |
| 2466 ;; This way of moving forward COUNT lines | |
| 428 | 2467 ;; verifies that we have a newline after the last one. |
| 2468 ;; It doesn't get confused by intangible text. | |
| 2469 (end-of-line) | |
| 2470 (zerop (forward-line 1))) | |
| 444 | 2471 (and (zerop (forward-line count)) |
| 428 | 2472 (bolp))) |
| 444 | 2473 (signal (if (< count 0) |
| 428 | 2474 'beginning-of-buffer |
| 2475 'end-of-buffer) | |
| 2476 nil)) | |
| 444 | 2477 ;; Move by count lines, but ignore invisible ones. |
| 2478 (while (> count 0) | |
| 428 | 2479 (end-of-line) |
| 2480 (and (zerop (vertical-motion 1)) | |
| 2481 (signal 'end-of-buffer nil)) | |
| 2482 ;; If the following character is currently invisible, | |
| 2483 ;; skip all characters with that same `invisible' property value. | |
| 2484 (while (and (not (eobp)) | |
| 2485 (let ((prop | |
| 2486 (get-char-property (point) 'invisible))) | |
| 2487 (if (eq buffer-invisibility-spec t) | |
| 2488 prop | |
| 2489 (or (memq prop buffer-invisibility-spec) | |
| 2490 (assq prop buffer-invisibility-spec))))) | |
| 2491 (if (get-text-property (point) 'invisible) | |
| 2492 (goto-char (next-single-property-change (point) 'invisible)) | |
| 2493 (goto-char (next-extent-change (point))))) ; XEmacs | |
| 444 | 2494 (setq count (1- count))) |
| 2495 (while (< count 0) | |
| 428 | 2496 (beginning-of-line) |
| 2497 (and (zerop (vertical-motion -1)) | |
| 2498 (signal 'beginning-of-buffer nil)) | |
| 2499 (while (and (not (bobp)) | |
| 2500 (let ((prop | |
| 2501 (get-char-property (1- (point)) 'invisible))) | |
| 2502 (if (eq buffer-invisibility-spec t) | |
| 2503 prop | |
| 2504 (or (memq prop buffer-invisibility-spec) | |
| 2505 (assq prop buffer-invisibility-spec))))) | |
| 2506 (if (get-text-property (1- (point)) 'invisible) | |
| 2507 (goto-char (previous-single-property-change (point) 'invisible)) | |
| 2508 (goto-char (previous-extent-change (point))))) ; XEmacs | |
| 444 | 2509 (setq count (1+ count)))) |
| 428 | 2510 (move-to-column (or goal-column temporary-goal-column))) |
| 2511 ;; Remember where we moved to, go back home, | |
| 2512 ;; then do the motion over again | |
| 2513 ;; in just one step, with intangibility and point-motion hooks | |
| 2514 ;; enabled this time. | |
| 2515 (setq new (point)) | |
| 2516 (goto-char opoint) | |
| 2517 (setq inhibit-point-motion-hooks nil) | |
| 2518 (goto-char new))) | |
| 2519 nil) | |
| 2520 | |
| 2521 ;;; Many people have said they rarely use this feature, and often type | |
| 2522 ;;; it by accident. Maybe it shouldn't even be on a key. | |
| 2523 ;; It's not on a key, as of 20.2. So no need for this. | |
| 2524 ;(put 'set-goal-column 'disabled t) | |
| 2525 | |
| 444 | 2526 (defun set-goal-column (column) |
| 428 | 2527 "Set the current horizontal position as a goal for \\[next-line] and \\[previous-line]. |
| 2528 Those commands will move to this position in the line moved to | |
| 2529 rather than trying to keep the same horizontal position. | |
| 2530 With a non-nil argument, clears out the goal column | |
| 2531 so that \\[next-line] and \\[previous-line] resume vertical motion. | |
| 2532 The goal column is stored in the variable `goal-column'." | |
| 2533 (interactive "_P") ; XEmacs | |
| 444 | 2534 (if column |
| 428 | 2535 (progn |
| 2536 (setq goal-column nil) | |
| 2537 (display-message 'command "No goal column")) | |
| 2538 (setq goal-column (current-column)) | |
| 2539 (lmessage 'command | |
| 444 | 2540 "Goal column %d (use %s with a prefix arg to unset it)" |
| 428 | 2541 goal-column |
| 2542 (substitute-command-keys "\\[set-goal-column]"))) | |
| 2543 nil) | |
| 2544 | |
| 2545 ;; deleted FSFmacs terminal randomness hscroll-point-visible stuff. | |
| 2546 ;; hscroll-step | |
| 2547 ;; hscroll-point-visible | |
| 2548 ;; hscroll-window-column | |
| 2549 ;; right-arrow | |
| 2550 ;; left-arrow | |
| 2551 | |
| 2552 (defun scroll-other-window-down (lines) | |
| 2553 "Scroll the \"other window\" down. | |
| 2554 For more details, see the documentation for `scroll-other-window'." | |
| 2555 (interactive "P") | |
| 2556 (scroll-other-window | |
| 2557 ;; Just invert the argument's meaning. | |
| 2558 ;; We can do that without knowing which window it will be. | |
| 2559 (if (eq lines '-) nil | |
| 2560 (if (null lines) '- | |
| 2561 (- (prefix-numeric-value lines)))))) | |
| 2562 ;(define-key esc-map [?\C-\S-v] 'scroll-other-window-down) | |
| 2563 | |
| 2564 (defun beginning-of-buffer-other-window (arg) | |
| 2565 "Move point to the beginning of the buffer in the other window. | |
| 2566 Leave mark at previous position. | |
| 2567 With arg N, put point N/10 of the way from the true beginning." | |
| 2568 (interactive "P") | |
| 2569 (let ((orig-window (selected-window)) | |
| 2570 (window (other-window-for-scrolling))) | |
| 2571 ;; We use unwind-protect rather than save-window-excursion | |
| 2572 ;; because the latter would preserve the things we want to change. | |
| 2573 (unwind-protect | |
| 2574 (progn | |
| 2575 (select-window window) | |
| 2576 ;; Set point and mark in that window's buffer. | |
| 2577 (beginning-of-buffer arg) | |
| 2578 ;; Set point accordingly. | |
| 2579 (recenter '(t))) | |
| 2580 (select-window orig-window)))) | |
| 2581 | |
| 2582 (defun end-of-buffer-other-window (arg) | |
| 2583 "Move point to the end of the buffer in the other window. | |
| 2584 Leave mark at previous position. | |
| 2585 With arg N, put point N/10 of the way from the true end." | |
| 2586 (interactive "P") | |
| 2587 ;; See beginning-of-buffer-other-window for comments. | |
| 2588 (let ((orig-window (selected-window)) | |
| 2589 (window (other-window-for-scrolling))) | |
| 2590 (unwind-protect | |
| 2591 (progn | |
| 2592 (select-window window) | |
| 2593 (end-of-buffer arg) | |
| 2594 (recenter '(t))) | |
| 2595 (select-window orig-window)))) | |
| 2596 | |
| 2597 (defun transpose-chars (arg) | |
| 2598 "Interchange characters around point, moving forward one character. | |
| 2599 With prefix arg ARG, effect is to take character before point | |
| 2600 and drag it forward past ARG other characters (backward if ARG negative). | |
| 2601 If no argument and at end of line, the previous two chars are exchanged." | |
| 2602 (interactive "*P") | |
| 446 | 2603 (and (null arg) (eolp) (backward-char 1)) |
| 428 | 2604 (transpose-subr 'forward-char (prefix-numeric-value arg))) |
| 2605 | |
| 2606 ;;; A very old implementation of transpose-chars from the old days ... | |
| 2607 (defun transpose-preceding-chars (arg) | |
| 2608 "Interchange characters before point. | |
| 2609 With prefix arg ARG, effect is to take character before point | |
| 2610 and drag it forward past ARG other characters (backward if ARG negative). | |
| 2611 If no argument and not at start of line, the previous two chars are exchanged." | |
| 2612 (interactive "*P") | |
| 446 | 2613 (and (null arg) (not (bolp)) (backward-char 1)) |
| 428 | 2614 (transpose-subr 'forward-char (prefix-numeric-value arg))) |
| 2615 | |
| 2616 | |
| 2617 (defun transpose-words (arg) | |
| 2618 "Interchange words around point, leaving point at end of them. | |
| 2619 With prefix arg ARG, effect is to take word before or around point | |
| 2620 and drag it forward past ARG other words (backward if ARG negative). | |
| 2621 If ARG is zero, the words around or after point and around or after mark | |
| 2622 are interchanged." | |
| 2623 (interactive "*p") | |
| 2624 (transpose-subr 'forward-word arg)) | |
| 2625 | |
| 2626 (defun transpose-sexps (arg) | |
| 2627 "Like \\[transpose-words] but applies to sexps. | |
| 2628 Does not work on a sexp that point is in the middle of | |
| 2629 if it is a list or string." | |
| 2630 (interactive "*p") | |
| 2631 (transpose-subr 'forward-sexp arg)) | |
| 2632 | |
| 613 | 2633 (defun Simple-forward-line-creating-newline () |
| 2634 ;; Move forward over a line, | |
| 2635 ;; but create a newline if none exists yet. | |
| 2636 (end-of-line) | |
| 2637 (if (eobp) | |
| 2638 (newline) | |
| 2639 (forward-char 1))) | |
| 2640 | |
| 2641 (defun Simple-transpose-lines-mover (arg) | |
| 2642 (if (= arg 1) | |
| 2643 (Simple-forward-line-creating-newline) | |
| 2644 (forward-line arg))) | |
| 2645 | |
| 428 | 2646 (defun transpose-lines (arg) |
| 2647 "Exchange current line and previous line, leaving point after both. | |
| 2648 With argument ARG, takes previous line and moves it past ARG lines. | |
| 2649 With argument 0, interchanges line point is in with line mark is in." | |
| 2650 (interactive "*p") | |
| 613 | 2651 (transpose-subr 'Simple-transpose-lines-mover arg)) |
| 428 | 2652 |
| 442 | 2653 (defun transpose-line-up (arg) |
| 2654 "Move current line one line up, leaving point at beginning of that line. | |
| 613 | 2655 With argument ARG, move it ARG lines up. This can be run repeatedly |
| 2656 to move the current line up a number of lines. | |
| 2657 | |
| 2658 If the region is active, move the region up one line (or ARG lines, | |
| 2659 if specified). The region will not be selected afterwards, but this | |
| 2660 command can still be run repeatedly to move the region up a number | |
| 2661 of lines." | |
| 442 | 2662 (interactive "*p") |
| 613 | 2663 (transpose-line-down (- arg))) |
| 442 | 2664 |
| 2665 (defun transpose-line-down (arg) | |
| 2666 "Move current line one line down, leaving point at beginning of that line. | |
| 613 | 2667 With argument ARG, move it ARG lines down. This can be run repeatedly |
| 2668 to move the current line down a number of lines. | |
| 2669 | |
| 2670 If the region is active, move the region down one line (or ARG lines, | |
| 2671 if specified). The region will not be selected afterwards, but this | |
| 2672 command can still be run repeatedly to move the region down a number | |
| 2673 of lines." | |
| 442 | 2674 (interactive "*p") |
| 613 | 2675 (if (or (region-active-p) |
| 2676 (getf last-command-properties 'transpose-region-by-line-command)) | |
| 2677 (progn | |
| 2678 (transpose-subr 'Simple-transpose-lines-mover arg t) | |
| 2679 (putf this-command-properties 'transpose-region-by-line-command t)) | |
| 2680 (Simple-forward-line-creating-newline) | |
| 2681 (transpose-subr 'Simple-transpose-lines-mover arg) | |
| 2682 (forward-line -1))) | |
| 2683 | |
| 2684 (defun transpose-subr (mover arg &optional move-region) | |
| 428 | 2685 (let (start1 end1 start2 end2) |
|
5567
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|
2686 ;; XEmacs -- use labels instead of defining a separate function and |
| 613 | 2687 ;; relying on dynamic scope; use (mark t) etc; add code to support |
| 2688 ;; the new MOVE-REGION arg. | |
|
5567
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|
2689 (labels ((transpose-subr-1 () |
|
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|
2690 (if (> (min end1 end2) (max start1 start2)) |
|
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|
2691 (error "Don't have two things to transpose")) |
|
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|
2692 (let ((word1 (buffer-substring start1 end1)) |
|
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parents:
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diff
changeset
|
2693 (word2 (buffer-substring start2 end2))) |
|
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Aidan Kehoe <kehoea@parhasard.net>
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|
2694 (delete-region start2 end2) |
|
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Aidan Kehoe <kehoea@parhasard.net>
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|
2695 (goto-char start2) |
|
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|
2696 (insert word1) |
|
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|
2697 (goto-char (if (< start1 start2) start1 |
|
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parents:
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|
2698 (+ start1 (- (length word1) (length word2))))) |
|
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|
2699 (delete-char (length word1)) |
|
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|
2700 (insert word2)))) |
| 442 | 2701 (if (= arg 0) |
| 2702 (progn | |
| 2703 (save-excursion | |
| 2704 (funcall mover 1) | |
| 2705 (setq end2 (point)) | |
| 2706 (funcall mover -1) | |
| 2707 (setq start2 (point)) | |
| 613 | 2708 (goto-char (mark t)) |
| 442 | 2709 (funcall mover 1) |
| 2710 (setq end1 (point)) | |
| 2711 (funcall mover -1) | |
| 2712 (setq start1 (point)) | |
| 2713 (transpose-subr-1)) | |
| 613 | 2714 (exchange-point-and-mark t))) |
| 2715 (if move-region | |
| 2716 (let ((rbeg (region-beginning)) | |
| 2717 (rend (region-end))) | |
| 2718 (while (> arg 0) | |
| 2719 (goto-char rend) | |
| 2720 (funcall mover 1) | |
| 2721 (setq end2 (point)) | |
| 2722 (funcall mover -1) | |
| 2723 (setq start2 (point)) | |
| 2724 (setq start1 rbeg end1 rend) | |
| 2725 (transpose-subr-1) | |
| 2726 (incf rbeg (- end2 start2)) | |
| 2727 (incf rend (- end2 start2)) | |
| 2728 (setq arg (1- arg))) | |
| 2729 (while (< arg 0) | |
| 2730 (goto-char rbeg) | |
| 2731 (funcall mover -1) | |
| 2732 (setq start1 (point)) | |
| 2733 (funcall mover 1) | |
| 2734 (setq end1 (point)) | |
| 2735 (setq start2 rbeg end2 rend) | |
| 2736 (transpose-subr-1) | |
| 2737 (decf rbeg (- end1 start1)) | |
| 2738 (decf rend (- end1 start1)) | |
| 2739 (setq arg (1+ arg))) | |
| 2740 (set-mark rbeg) | |
| 2741 (goto-char rend)) | |
| 2742 (while (> arg 0) | |
| 2743 (funcall mover -1) | |
| 2744 (setq start1 (point)) | |
| 2745 (funcall mover 1) | |
| 2746 (setq end1 (point)) | |
| 2747 (funcall mover 1) | |
| 2748 (setq end2 (point)) | |
| 2749 (funcall mover -1) | |
| 2750 (setq start2 (point)) | |
| 2751 (transpose-subr-1) | |
| 2752 (goto-char end2) | |
| 2753 (setq arg (1- arg))) | |
| 2754 (while (< arg 0) | |
| 2755 (funcall mover -1) | |
| 2756 (setq start2 (point)) | |
| 2757 (funcall mover -1) | |
| 2758 (setq start1 (point)) | |
| 2759 (funcall mover 1) | |
| 2760 (setq end1 (point)) | |
| 2761 (funcall mover 1) | |
| 2762 (setq end2 (point)) | |
| 2763 (transpose-subr-1) | |
| 2764 (setq arg (1+ arg))))))) | |
| 442 | 2765 |
| 428 | 2766 |
| 2767 ;; XEmacs | |
| 2768 (defun prefix-region (prefix) | |
| 2769 "Add a prefix string to each line between mark and point." | |
| 2770 (interactive "sPrefix string: ") | |
| 2771 (if prefix | |
| 2772 (let ((count (count-lines (mark) (point)))) | |
| 2773 (goto-char (min (mark) (point))) | |
| 2774 (while (> count 0) | |
| 2775 (setq count (1- count)) | |
| 2776 (beginning-of-line 1) | |
| 2777 (insert prefix) | |
| 2778 (end-of-line 1) | |
| 2779 (forward-char 1))))) | |
| 2780 | |
| 2781 | |
| 446 | 2782 (defun backward-word (&optional count buffer) |
| 2783 "Move point backward COUNT words (forward if COUNT is negative). | |
| 2784 Normally t is returned, but if an edge of the buffer is reached, | |
| 2785 point is left there and nil is returned. | |
| 2786 | |
| 462 | 2787 COUNT defaults to 1, and BUFFER defaults to the current buffer. |
| 2788 | |
| 2789 The characters that are moved over may be added to the current selection | |
| 2790 \(i.e. active region) if the Shift key is held down, a motion key is used | |
| 2791 to invoke this command, and `shifted-motion-keys-select-region' is t; see | |
| 2792 the documentation for this variable for more details." | |
| 446 | 2793 (interactive "_p") |
| 2794 (forward-word (- (or count 1)) buffer)) | |
| 2795 | |
| 2796 (defun mark-word (&optional count) | |
| 2797 "Mark the text from point until encountering the end of a word. | |
| 2798 With optional argument COUNT, mark COUNT words." | |
| 428 | 2799 (interactive "p") |
| 446 | 2800 (mark-something 'mark-word 'forward-word count)) |
| 2801 | |
| 844 | 2802 (defcustom kill-word-into-kill-ring t |
| 2803 "*Non-nil means `kill-word' saves word killed into kill ring. | |
| 2804 \(Normally, this also affects the clipboard.) | |
| 2805 Nil means word is just deleted, without being remembered. | |
| 2806 This also applies to `backward-kill-word' and `backward-or-forward-kill-word'." | |
| 2807 :type 'boolean | |
| 2808 :group 'editing-basics) | |
| 2809 | |
| 446 | 2810 (defun kill-word (&optional count) |
| 428 | 2811 "Kill characters forward until encountering the end of a word. |
| 446 | 2812 With optional argument COUNT, do this that many times." |
| 2813 (interactive "*p") | |
| 844 | 2814 (if kill-word-into-kill-ring |
| 2815 (kill-region (point) (save-excursion (forward-word count) (point))) | |
| 2816 (delete-region (point) (save-excursion (forward-word count) (point))))) | |
| 446 | 2817 |
| 2818 (defun backward-kill-word (&optional count) | |
| 2819 "Kill characters backward until encountering the end of a word. | |
| 428 | 2820 With argument, do this that many times." |
| 2821 (interactive "*p") | |
| 446 | 2822 (kill-word (- (or count 1)))) |
| 428 | 2823 |
| 2824 (defun current-word (&optional strict) | |
| 2825 "Return the word point is on (or a nearby word) as a string. | |
| 2826 If optional arg STRICT is non-nil, return nil unless point is within | |
| 2827 or adjacent to a word. | |
| 2828 If point is not between two word-constituent characters, but immediately | |
| 2829 follows one, move back first. | |
| 2830 Otherwise, if point precedes a word constituent, move forward first. | |
| 2831 Otherwise, move backwards until a word constituent is found and get that word; | |
| 2832 if you a newlines is reached first, move forward instead." | |
| 2833 (save-excursion | |
| 2834 (let ((oldpoint (point)) (start (point)) (end (point))) | |
| 2835 (skip-syntax-backward "w_") (setq start (point)) | |
| 2836 (goto-char oldpoint) | |
| 2837 (skip-syntax-forward "w_") (setq end (point)) | |
| 2838 (if (and (eq start oldpoint) (eq end oldpoint)) | |
| 2839 ;; Point is neither within nor adjacent to a word. | |
| 2840 (and (not strict) | |
| 2841 (progn | |
| 2842 ;; Look for preceding word in same line. | |
| 2843 (skip-syntax-backward "^w_" | |
| 2844 (save-excursion | |
| 2845 (beginning-of-line) (point))) | |
| 2846 (if (bolp) | |
| 2847 ;; No preceding word in same line. | |
| 2848 ;; Look for following word in same line. | |
| 2849 (progn | |
| 2850 (skip-syntax-forward "^w_" | |
| 2851 (save-excursion | |
| 2852 (end-of-line) (point))) | |
| 2853 (setq start (point)) | |
| 2854 (skip-syntax-forward "w_") | |
| 2855 (setq end (point))) | |
| 2856 (setq end (point)) | |
| 2857 (skip-syntax-backward "w_") | |
| 2858 (setq start (point))) | |
| 2859 (buffer-substring start end))) | |
| 2860 (buffer-substring start end))))) | |
| 2861 | |
| 2862 (defcustom fill-prefix nil | |
| 2863 "*String for filling to insert at front of new line, or nil for none. | |
| 2864 Setting this variable automatically makes it local to the current buffer." | |
| 2865 :type '(choice (const :tag "None" nil) | |
| 2866 string) | |
| 2867 :group 'fill) | |
| 2868 (make-variable-buffer-local 'fill-prefix) | |
| 2869 | |
| 2870 (defcustom auto-fill-inhibit-regexp nil | |
| 2871 "*Regexp to match lines which should not be auto-filled." | |
| 2872 :type '(choice (const :tag "None" nil) | |
| 2873 regexp) | |
| 2874 :group 'fill) | |
| 2875 | |
| 2876 (defvar comment-line-break-function 'indent-new-comment-line | |
| 2877 "*Mode-specific function which line breaks and continues a comment. | |
| 2878 | |
| 2879 This function is only called during auto-filling of a comment section. | |
| 2880 The function should take a single optional argument which is a flag | |
| 2881 indicating whether soft newlines should be inserted.") | |
| 2882 | |
| 2883 ;; This function is the auto-fill-function of a buffer | |
| 2884 ;; when Auto-Fill mode is enabled. | |
| 2885 ;; It returns t if it really did any work. | |
| 2886 ;; XEmacs: This function is totally different. | |
| 2887 (defun do-auto-fill () | |
| 2888 (let (give-up) | |
| 2889 (or (and auto-fill-inhibit-regexp | |
| 2890 (save-excursion (beginning-of-line) | |
| 2891 (looking-at auto-fill-inhibit-regexp))) | |
| 2892 (while (and (not give-up) (> (current-column) fill-column)) | |
| 2893 ;; Determine where to split the line. | |
| 2894 (let ((fill-prefix fill-prefix) | |
| 2895 (fill-point | |
| 2896 (let ((opoint (point)) | |
| 2897 bounce | |
| 502 | 2898 (re-break-point ;; Kinsoku processing |
| 2899 (if (featurep 'mule) | |
| 771 | 2900 (with-boundp 'word-across-newline |
| 2901 (concat "[ \t\n]\\|" word-across-newline | |
| 2902 ".\\|." word-across-newline)) | |
| 502 | 2903 "[ \t\n]")) |
| 428 | 2904 (first t)) |
| 2905 (save-excursion | |
| 2906 (move-to-column (1+ fill-column)) | |
| 2907 ;; Move back to a word boundary. | |
| 2908 (while (or first | |
| 2909 ;; If this is after period and a single space, | |
| 2910 ;; move back once more--we don't want to break | |
| 2911 ;; the line there and make it look like a | |
| 2912 ;; sentence end. | |
| 2913 (and (not (bobp)) | |
| 2914 (not bounce) | |
| 2915 sentence-end-double-space | |
| 446 | 2916 (save-excursion (backward-char 1) |
| 428 | 2917 (and (looking-at "\\. ") |
| 2918 (not (looking-at "\\. ")))))) | |
| 2919 (setq first nil) | |
| 502 | 2920 ;; XEmacs: change for Kinsoku processing |
| 428 | 2921 (fill-move-backward-to-break-point re-break-point) |
| 2922 ;; If we find nowhere on the line to break it, | |
| 2923 ;; break after one word. Set bounce to t | |
| 2924 ;; so we will not keep going in this while loop. | |
| 2925 (if (bolp) | |
| 2926 (progn | |
| 502 | 2927 ;; XEmacs: change for Kinsoku processing |
| 428 | 2928 (fill-move-forward-to-break-point re-break-point |
| 2929 opoint) | |
| 2930 (setq bounce t))) | |
| 2931 (skip-chars-backward " \t")) | |
| 2932 (if (and (featurep 'mule) | |
| 502 | 2933 (or bounce (bolp))) |
| 2934 (declare-fboundp (kinsoku-process))) | |
| 428 | 2935 ;; Let fill-point be set to the place where we end up. |
| 2936 (point))))) | |
| 2937 | |
| 2938 ;; I'm not sure why Stig made this change but it breaks | |
| 2939 ;; auto filling in at least C mode so I'm taking it back | |
| 2940 ;; out. --cet | |
| 2941 ;; XEmacs - adaptive fill. | |
| 2942 ;;(maybe-adapt-fill-prefix | |
| 2943 ;; (or from (setq from (save-excursion (beginning-of-line) | |
| 2944 ;; (point)))) | |
| 2945 ;; (or to (setq to (save-excursion (beginning-of-line 2) | |
| 2946 ;; (point)))) | |
| 2947 ;; t) | |
| 2948 | |
| 2949 ;; If that place is not the beginning of the line, | |
| 2950 ;; break the line there. | |
| 2951 (if (save-excursion | |
| 2952 (goto-char fill-point) | |
| 502 | 2953 ;; during kinsoku processing it is possible to move beyond |
| 2954 (not (or (bolp) (eolp)))) | |
| 428 | 2955 (let ((prev-column (current-column))) |
| 2956 ;; If point is at the fill-point, do not `save-excursion'. | |
| 2957 ;; Otherwise, if a comment prefix or fill-prefix is inserted, | |
| 2958 ;; point will end up before it rather than after it. | |
| 2959 (if (save-excursion | |
| 2960 (skip-chars-backward " \t") | |
| 2961 (= (point) fill-point)) | |
| 2962 ;; 1999-09-17 hniksic: turn off Kinsoku until | |
| 2963 ;; it's debugged. | |
| 444 | 2964 (funcall comment-line-break-function) |
| 502 | 2965 ;; XEmacs: Kinsoku processing |
| 428 | 2966 ; ;(indent-new-comment-line) |
| 2967 ; (let ((spacep (memq (char-before (point)) '(?\ ?\t)))) | |
| 2968 ; (funcall comment-line-break-function) | |
| 2969 ; ;; if user type space explicitly, leave SPC | |
| 2970 ; ;; even if there is no WAN. | |
| 2971 ; (if spacep | |
| 2972 ; (save-excursion | |
| 2973 ; (goto-char fill-point) | |
| 2974 ; ;; put SPC except that there is SPC | |
| 2975 ; ;; already or there is sentence end. | |
| 2976 ; (or (memq (char-after (point)) '(?\ ?\t)) | |
| 2977 ; (fill-end-of-sentence-p) | |
| 2978 ; (insert ?\ ))))) | |
| 2979 (save-excursion | |
| 2980 (goto-char fill-point) | |
| 2981 (funcall comment-line-break-function))) | |
| 2982 ;; If making the new line didn't reduce the hpos of | |
| 2983 ;; the end of the line, then give up now; | |
| 2984 ;; trying again will not help. | |
| 2985 (if (>= (current-column) prev-column) | |
| 2986 (setq give-up t))) | |
| 2987 ;; No place to break => stop trying. | |
| 2988 (setq give-up t))))))) | |
| 2989 | |
| 2990 ;; Put FSF one in until I can one or the other working properly, then the | |
| 2991 ;; other one is history. | |
| 2992 ;(defun fsf:do-auto-fill () | |
| 2993 ; (let (fc justify | |
| 2994 ; ;; bol | |
| 2995 ; give-up | |
| 2996 ; (fill-prefix fill-prefix)) | |
| 2997 ; (if (or (not (setq justify (current-justification))) | |
| 2998 ; (null (setq fc (current-fill-column))) | |
| 2999 ; (and (eq justify 'left) | |
| 3000 ; (<= (current-column) fc)) | |
| 3001 ; (save-excursion (beginning-of-line) | |
| 3002 ; ;; (setq bol (point)) | |
| 3003 ; (and auto-fill-inhibit-regexp | |
| 3004 ; (looking-at auto-fill-inhibit-regexp)))) | |
| 3005 ; nil ;; Auto-filling not required | |
| 3006 ; (if (memq justify '(full center right)) | |
| 3007 ; (save-excursion (unjustify-current-line))) | |
| 3008 | |
| 3009 ; ;; Choose a fill-prefix automatically. | |
| 3010 ; (if (and adaptive-fill-mode | |
| 3011 ; (or (null fill-prefix) (string= fill-prefix ""))) | |
| 3012 ; (let ((prefix | |
| 3013 ; (fill-context-prefix | |
| 3014 ; (save-excursion (backward-paragraph 1) (point)) | |
| 3015 ; (save-excursion (forward-paragraph 1) (point)) | |
| 3016 ; ;; Don't accept a non-whitespace fill prefix | |
| 3017 ; ;; from the first line of a paragraph. | |
| 3018 ; "^[ \t]*$"))) | |
| 3019 ; (and prefix (not (equal prefix "")) | |
| 3020 ; (setq fill-prefix prefix)))) | |
| 3021 | |
| 3022 ; (while (and (not give-up) (> (current-column) fc)) | |
| 3023 ; ;; Determine where to split the line. | |
| 3024 ; (let ((fill-point | |
| 3025 ; (let ((opoint (point)) | |
| 3026 ; bounce | |
| 3027 ; (first t)) | |
| 3028 ; (save-excursion | |
| 3029 ; (move-to-column (1+ fc)) | |
| 3030 ; ;; Move back to a word boundary. | |
| 3031 ; (while (or first | |
| 3032 ; ;; If this is after period and a single space, | |
| 3033 ; ;; move back once more--we don't want to break | |
| 3034 ; ;; the line there and make it look like a | |
| 3035 ; ;; sentence end. | |
| 3036 ; (and (not (bobp)) | |
| 3037 ; (not bounce) | |
| 3038 ; sentence-end-double-space | |
| 446 | 3039 ; (save-excursion (backward-char 1) |
| 428 | 3040 ; (and (looking-at "\\. ") |
| 3041 ; (not (looking-at "\\. ")))))) | |
| 3042 ; (setq first nil) | |
| 3043 ; (skip-chars-backward "^ \t\n") | |
| 3044 ; ;; If we find nowhere on the line to break it, | |
| 3045 ; ;; break after one word. Set bounce to t | |
| 3046 ; ;; so we will not keep going in this while loop. | |
| 3047 ; (if (bolp) | |
| 3048 ; (progn | |
| 3049 ; (re-search-forward "[ \t]" opoint t) | |
| 3050 ; (setq bounce t))) | |
| 3051 ; (skip-chars-backward " \t")) | |
| 3052 ; ;; Let fill-point be set to the place where we end up. | |
| 3053 ; (point))))) | |
| 3054 ; ;; If that place is not the beginning of the line, | |
| 3055 ; ;; break the line there. | |
| 3056 ; (if (save-excursion | |
| 3057 ; (goto-char fill-point) | |
| 3058 ; (not (bolp))) | |
| 3059 ; (let ((prev-column (current-column))) | |
| 3060 ; ;; If point is at the fill-point, do not `save-excursion'. | |
| 3061 ; ;; Otherwise, if a comment prefix or fill-prefix is inserted, | |
| 3062 ; ;; point will end up before it rather than after it. | |
| 3063 ; (if (save-excursion | |
| 3064 ; (skip-chars-backward " \t") | |
| 3065 ; (= (point) fill-point)) | |
| 3066 ; (funcall comment-line-break-function t) | |
| 3067 ; (save-excursion | |
| 3068 ; (goto-char fill-point) | |
| 3069 ; (funcall comment-line-break-function t))) | |
| 3070 ; ;; Now do justification, if required | |
| 3071 ; (if (not (eq justify 'left)) | |
| 3072 ; (save-excursion | |
| 3073 ; (end-of-line 0) | |
| 3074 ; (justify-current-line justify nil t))) | |
| 3075 ; ;; If making the new line didn't reduce the hpos of | |
| 3076 ; ;; the end of the line, then give up now; | |
| 3077 ; ;; trying again will not help. | |
| 3078 ; (if (>= (current-column) prev-column) | |
| 3079 ; (setq give-up t))) | |
| 3080 ; ;; No place to break => stop trying. | |
| 3081 ; (setq give-up t)))) | |
| 3082 ; ;; Justify last line. | |
| 3083 ; (justify-current-line justify t t) | |
| 3084 ; t))) | |
| 3085 | |
| 3086 (defvar normal-auto-fill-function 'do-auto-fill | |
| 3087 "The function to use for `auto-fill-function' if Auto Fill mode is turned on. | |
| 3088 Some major modes set this.") | |
| 3089 | |
| 3090 (defun auto-fill-mode (&optional arg) | |
| 3091 "Toggle auto-fill mode. | |
| 3092 With arg, turn auto-fill mode on if and only if arg is positive. | |
| 3093 In Auto-Fill mode, inserting a space at a column beyond `current-fill-column' | |
| 3094 automatically breaks the line at a previous space. | |
| 3095 | |
| 3096 The value of `normal-auto-fill-function' specifies the function to use | |
| 3097 for `auto-fill-function' when turning Auto Fill mode on." | |
| 3098 (interactive "P") | |
| 3099 (prog1 (setq auto-fill-function | |
| 3100 (if (if (null arg) | |
| 3101 (not auto-fill-function) | |
| 3102 (> (prefix-numeric-value arg) 0)) | |
| 3103 normal-auto-fill-function | |
| 3104 nil)) | |
| 3105 (redraw-modeline))) | |
| 3106 | |
| 3107 ;; This holds a document string used to document auto-fill-mode. | |
| 3108 (defun auto-fill-function () | |
| 3109 "Automatically break line at a previous space, in insertion of text." | |
| 3110 nil) | |
| 3111 | |
| 3112 (defun turn-on-auto-fill () | |
| 3113 "Unconditionally turn on Auto Fill mode." | |
| 444 | 3114 (interactive) |
| 428 | 3115 (auto-fill-mode 1)) |
| 3116 | |
|
4681
64ac4337298b
Implement turn-off-auto-fill.
Malcolm Purvis <malcolmp@xemacs.org>
parents:
4680
diff
changeset
|
3117 (defun turn-off-auto-fill () |
|
64ac4337298b
Implement turn-off-auto-fill.
Malcolm Purvis <malcolmp@xemacs.org>
parents:
4680
diff
changeset
|
3118 "Unconditionally turn off Auto Fill mode." |
|
64ac4337298b
Implement turn-off-auto-fill.
Malcolm Purvis <malcolmp@xemacs.org>
parents:
4680
diff
changeset
|
3119 (interactive) |
|
64ac4337298b
Implement turn-off-auto-fill.
Malcolm Purvis <malcolmp@xemacs.org>
parents:
4680
diff
changeset
|
3120 (auto-fill-mode -1)) |
|
64ac4337298b
Implement turn-off-auto-fill.
Malcolm Purvis <malcolmp@xemacs.org>
parents:
4680
diff
changeset
|
3121 |
| 428 | 3122 (defun set-fill-column (arg) |
| 3123 "Set `fill-column' to specified argument. | |
| 3124 Just \\[universal-argument] as argument means to use the current column | |
| 3125 The variable `fill-column' has a separate value for each buffer." | |
| 3126 (interactive "_P") ; XEmacs | |
| 3127 (cond ((integerp arg) | |
| 3128 (setq fill-column arg)) | |
| 3129 ((consp arg) | |
| 3130 (setq fill-column (current-column))) | |
| 3131 ;; Disallow missing argument; it's probably a typo for C-x C-f. | |
| 3132 (t | |
| 3133 (error "set-fill-column requires an explicit argument"))) | |
| 3134 (lmessage 'command "fill-column set to %d" fill-column)) | |
| 3135 | |
| 1333 | 3136 |
| 3137 ;; BEGIN SYNCHED WITH FSF 21.2. | |
| 3138 | |
| 428 | 3139 (defun set-selective-display (arg) |
| 3140 "Set `selective-display' to ARG; clear it if no arg. | |
| 3141 When the value of `selective-display' is a number > 0, | |
| 3142 lines whose indentation is >= that value are not displayed. | |
| 3143 The variable `selective-display' has a separate value for each buffer." | |
| 3144 (interactive "P") | |
| 3145 (if (eq selective-display t) | |
| 3146 (error "selective-display already in use for marked lines")) | |
| 3147 (let ((current-vpos | |
| 3148 (save-restriction | |
| 3149 (narrow-to-region (point-min) (point)) | |
| 3150 (goto-char (window-start)) | |
| 3151 (vertical-motion (window-height))))) | |
| 3152 (setq selective-display | |
| 3153 (and arg (prefix-numeric-value arg))) | |
| 3154 (recenter current-vpos)) | |
| 3155 (set-window-start (selected-window) (window-start (selected-window))) | |
| 3156 ;; #### doesn't localize properly: | |
| 3157 (princ "selective-display set to " t) | |
| 3158 (prin1 selective-display t) | |
| 3159 (princ "." t)) | |
| 3160 | |
| 3161 ;; XEmacs | |
| 3162 (defun nuke-selective-display () | |
| 3163 "Ensure that the buffer is not in selective-display mode. | |
| 3164 If `selective-display' is t, then restore the buffer text to its original | |
| 3165 state before disabling selective display." | |
| 3166 ;; by Stig@hackvan.com | |
| 3167 (interactive) | |
| 3168 (and (eq t selective-display) | |
| 3169 (save-excursion | |
| 3170 (save-restriction | |
| 3171 (widen) | |
| 3172 (goto-char (point-min)) | |
| 3173 (let ((mod-p (buffer-modified-p)) | |
| 3174 (buffer-read-only nil)) | |
| 3175 (while (search-forward "\r" nil t) | |
| 3176 (delete-char -1) | |
| 3177 (insert "\n")) | |
| 3178 (set-buffer-modified-p mod-p) | |
| 3179 )))) | |
| 3180 (setq selective-display nil)) | |
| 3181 | |
| 3182 (add-hook 'change-major-mode-hook 'nuke-selective-display) | |
| 3183 | |
| 1333 | 3184 (defvar overwrite-mode-textual " Ovwrt" |
| 428 | 3185 "The string displayed in the mode line when in overwrite mode.") |
| 1333 | 3186 (defvar overwrite-mode-binary " Bin Ovwrt" |
| 428 | 3187 "The string displayed in the mode line when in binary overwrite mode.") |
| 3188 | |
| 3189 (defun overwrite-mode (arg) | |
| 3190 "Toggle overwrite mode. | |
| 1333 | 3191 With arg, turn overwrite mode on iff arg is positive. |
| 428 | 3192 In overwrite mode, printing characters typed in replace existing text |
| 3193 on a one-for-one basis, rather than pushing it to the right. At the | |
| 3194 end of a line, such characters extend the line. Before a tab, | |
| 3195 such characters insert until the tab is filled in. | |
| 3196 \\[quoted-insert] still inserts characters in overwrite mode; this | |
| 3197 is supposed to make it easier to insert characters when necessary." | |
| 3198 (interactive "P") | |
| 3199 (setq overwrite-mode | |
| 3200 (if (if (null arg) (not overwrite-mode) | |
| 3201 (> (prefix-numeric-value arg) 0)) | |
| 3202 'overwrite-mode-textual)) | |
| 3203 (redraw-modeline)) | |
| 3204 | |
| 3205 (defun binary-overwrite-mode (arg) | |
| 3206 "Toggle binary overwrite mode. | |
| 1333 | 3207 With arg, turn binary overwrite mode on iff arg is positive. |
| 428 | 3208 In binary overwrite mode, printing characters typed in replace |
| 3209 existing text. Newlines are not treated specially, so typing at the | |
| 3210 end of a line joins the line to the next, with the typed character | |
| 3211 between them. Typing before a tab character simply replaces the tab | |
| 3212 with the character typed. | |
| 3213 \\[quoted-insert] replaces the text at the cursor, just as ordinary | |
| 3214 typing characters do. | |
| 3215 | |
| 3216 Note that binary overwrite mode is not its own minor mode; it is a | |
| 3217 specialization of overwrite-mode, entered by setting the | |
| 3218 `overwrite-mode' variable to `overwrite-mode-binary'." | |
| 3219 (interactive "P") | |
| 3220 (setq overwrite-mode | |
| 3221 (if (if (null arg) | |
| 3222 (not (eq overwrite-mode 'overwrite-mode-binary)) | |
| 3223 (> (prefix-numeric-value arg) 0)) | |
| 3224 'overwrite-mode-binary)) | |
| 3225 (redraw-modeline)) | |
| 1333 | 3226 |
| 3227 ;; END SYNCHED WITH FSF 21.2. | |
| 3228 | |
| 428 | 3229 |
| 771 | 3230 (defcustom line-number-mode t |
| 428 | 3231 "*Non-nil means display line number in modeline." |
| 3232 :type 'boolean | |
| 3233 :group 'editing-basics) | |
| 3234 | |
| 3235 (defun line-number-mode (arg) | |
| 3236 "Toggle Line Number mode. | |
| 444 | 3237 With arg, enable Line Number mode if arg is positive, else disable. |
| 428 | 3238 When Line Number mode is enabled, the line number appears |
| 3239 in the mode line." | |
| 3240 (interactive "P") | |
| 3241 (setq line-number-mode | |
| 3242 (if (null arg) (not line-number-mode) | |
| 3243 (> (prefix-numeric-value arg) 0))) | |
| 3244 (redraw-modeline)) | |
| 3245 | |
| 771 | 3246 (defcustom column-number-mode t |
| 428 | 3247 "*Non-nil means display column number in mode line." |
| 3248 :type 'boolean | |
| 3249 :group 'editing-basics) | |
| 3250 | |
| 3251 (defun column-number-mode (arg) | |
| 3252 "Toggle Column Number mode. | |
| 444 | 3253 With arg, enable Column Number mode if arg is positive, else disable. |
| 428 | 3254 When Column Number mode is enabled, the column number appears |
| 3255 in the mode line." | |
| 3256 (interactive "P") | |
| 3257 (setq column-number-mode | |
| 3258 (if (null arg) (not column-number-mode) | |
| 3259 (> (prefix-numeric-value arg) 0))) | |
| 3260 (redraw-modeline)) | |
| 3261 | |
| 3262 | |
| 3263 (defcustom blink-matching-paren t | |
| 3264 "*Non-nil means show matching open-paren when close-paren is inserted." | |
| 3265 :type 'boolean | |
| 3266 :group 'paren-blinking) | |
| 3267 | |
| 3268 (defcustom blink-matching-paren-on-screen t | |
| 3269 "*Non-nil means show matching open-paren when it is on screen. | |
| 3270 nil means don't show it (but the open-paren can still be shown | |
| 3271 when it is off screen." | |
| 3272 :type 'boolean | |
| 3273 :group 'paren-blinking) | |
| 3274 | |
| 3275 (defcustom blink-matching-paren-distance 12000 | |
| 3276 "*If non-nil, is maximum distance to search for matching open-paren." | |
| 3277 :type '(choice integer (const nil)) | |
| 3278 :group 'paren-blinking) | |
| 3279 | |
| 3280 (defcustom blink-matching-delay 1 | |
| 3281 "*The number of seconds that `blink-matching-open' will delay at a match." | |
| 3282 :type 'number | |
| 3283 :group 'paren-blinking) | |
| 3284 | |
| 3285 (defcustom blink-matching-paren-dont-ignore-comments nil | |
| 3286 "*Non-nil means `blink-matching-paren' should not ignore comments." | |
| 3287 :type 'boolean | |
| 3288 :group 'paren-blinking) | |
| 3289 | |
| 3290 (defun blink-matching-open () | |
| 3291 "Move cursor momentarily to the beginning of the sexp before point." | |
| 3292 (interactive "_") ; XEmacs | |
| 3293 (and (> (point) (1+ (point-min))) | |
| 3294 blink-matching-paren | |
| 3295 ;; Verify an even number of quoting characters precede the close. | |
| 3296 (= 1 (logand 1 (- (point) | |
| 3297 (save-excursion | |
| 446 | 3298 (backward-char 1) |
| 428 | 3299 (skip-syntax-backward "/\\") |
| 3300 (point))))) | |
| 3301 (let* ((oldpos (point)) | |
| 3302 (blinkpos) | |
| 3303 (mismatch)) | |
| 3304 (save-excursion | |
| 3305 (save-restriction | |
| 3306 (if blink-matching-paren-distance | |
| 3307 (narrow-to-region (max (point-min) | |
| 3308 (- (point) blink-matching-paren-distance)) | |
| 3309 oldpos)) | |
| 3310 (condition-case () | |
| 3311 (let ((parse-sexp-ignore-comments | |
| 3312 (and parse-sexp-ignore-comments | |
| 3313 (not blink-matching-paren-dont-ignore-comments)))) | |
| 3314 (setq blinkpos (scan-sexps oldpos -1))) | |
| 3315 (error nil))) | |
| 3316 (and blinkpos | |
| 3317 (/= (char-syntax (char-after blinkpos)) | |
| 3318 ?\$) | |
| 3319 (setq mismatch | |
| 3320 (or (null (matching-paren (char-after blinkpos))) | |
| 3321 (/= (char-after (1- oldpos)) | |
| 3322 (matching-paren (char-after blinkpos)))))) | |
| 3323 (if mismatch (setq blinkpos nil)) | |
| 3324 (if blinkpos | |
| 3325 (progn | |
| 3326 (goto-char blinkpos) | |
| 3327 (if (pos-visible-in-window-p) | |
| 3328 (and blink-matching-paren-on-screen | |
| 3329 (progn | |
| 3330 (auto-show-make-point-visible) | |
| 3331 (sit-for blink-matching-delay))) | |
| 3332 (goto-char blinkpos) | |
| 3333 (lmessage 'command "Matches %s" | |
| 3334 ;; Show what precedes the open in its line, if anything. | |
| 3335 (if (save-excursion | |
| 3336 (skip-chars-backward " \t") | |
| 3337 (not (bolp))) | |
| 3338 (buffer-substring (progn (beginning-of-line) (point)) | |
| 3339 (1+ blinkpos)) | |
| 3340 ;; Show what follows the open in its line, if anything. | |
| 3341 (if (save-excursion | |
| 3342 (forward-char 1) | |
| 3343 (skip-chars-forward " \t") | |
| 3344 (not (eolp))) | |
| 3345 (buffer-substring blinkpos | |
| 3346 (progn (end-of-line) (point))) | |
| 3347 ;; Otherwise show the previous nonblank line, | |
| 3348 ;; if there is one. | |
| 3349 (if (save-excursion | |
| 3350 (skip-chars-backward "\n \t") | |
| 3351 (not (bobp))) | |
| 3352 (concat | |
| 3353 (buffer-substring (progn | |
| 3354 (skip-chars-backward "\n \t") | |
| 3355 (beginning-of-line) | |
| 3356 (point)) | |
| 3357 (progn (end-of-line) | |
| 3358 (skip-chars-backward " \t") | |
| 3359 (point))) | |
| 3360 ;; Replace the newline and other whitespace with `...'. | |
| 3361 "..." | |
| 3362 (buffer-substring blinkpos (1+ blinkpos))) | |
| 3363 ;; There is nothing to show except the char itself. | |
| 3364 (buffer-substring blinkpos (1+ blinkpos)))))))) | |
| 3365 (cond (mismatch | |
| 3366 (display-message 'no-log "Mismatched parentheses")) | |
| 3367 ((not blink-matching-paren-distance) | |
| 3368 (display-message 'no-log "Unmatched parenthesis")))))))) | |
| 3369 | |
| 3370 ;Turned off because it makes dbx bomb out. | |
| 3371 (setq blink-paren-function 'blink-matching-open) | |
| 3372 | |
| 3373 | |
| 3374 ;; XEmacs: Some functions moved to cmdloop.el: | |
| 3375 ;; keyboard-quit | |
| 3376 ;; buffer-quit-function | |
| 3377 ;; keyboard-escape-quit | |
| 3378 | |
| 442 | 3379 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
| 3380 ;; mail composition code ;; | |
| 3381 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
| 3382 | |
| 1333 | 3383 ;; BEGIN SYNCHED WITH FSF 21.2. |
| 3384 | |
| 2768 | 3385 (defcustom mail-user-agent 'xemacs-default-mail-user-agent |
| 428 | 3386 "*Your preference for a mail composition package. |
| 1333 | 3387 Various Emacs Lisp packages (e.g. Reporter) require you to compose an |
| 428 | 3388 outgoing email message. This variable lets you specify which |
| 3389 mail-sending package you prefer. | |
| 3390 | |
| 2768 | 3391 Valid values may include: |
| 3392 | |
| 3393 `vm-user-agent' -- use Kyle Jones' VM, as documented in the `(vm)' | |
| 3394 Info node. Compatible with `sendmail-user-agent' | |
| 3395 and can handle attachments and non-ASCII content, | |
| 3396 which the former can't. | |
| 3397 `sendmail-user-agent' -- use the default, bare-bones, Emacs Mail | |
| 3398 package. See Info node `(xemacs)Sending Mail'. | |
| 1333 | 3399 `mh-e-user-agent' -- use the Emacs interface to the MH mail system. |
| 3400 See Info node `(mh-e)'. | |
| 3401 `message-user-agent' -- use the Gnus Message package. | |
| 3402 See Info node `(message)'. | |
| 3403 `gnus-user-agent' -- like `message-user-agent', but with Gnus | |
| 3404 paraphernalia, particularly the Gcc: header for | |
| 3405 archiving. | |
| 428 | 3406 |
| 2768 | 3407 If you examine the value of this variable before setting it or composing a |
| 3408 mail, it will have another value, `xemacs-default-mail-user-agent'--this is to | |
| 3409 allow XEmacs to suggest that you use another email client instead of | |
| 3410 `sendmail-user-agent'. The latter, while part of the base XEmacs Lisp code, | |
| 3411 and very lightweight, doesn't support MIME, a considerable disadvantage | |
| 3412 today. | |
| 3413 | |
| 428 | 3414 Additional valid symbols may be available; check with the author of |
| 1333 | 3415 your package for details. The function should return non-nil if it |
| 3416 succeeds. | |
| 3417 | |
| 3418 See also `read-mail-command' concerning reading mail." | |
| 2768 | 3419 :type '(radio (function-item :tag "VM mail package" |
| 3420 :format "%t\n" | |
| 3421 vm-user-agent) | |
| 3422 (function-item :tag "Bare-bones Emacs mail" | |
| 428 | 3423 :format "%t\n" |
| 3424 sendmail-user-agent) | |
| 1333 | 3425 (function-item :tag "Emacs interface to MH" |
| 3426 :format "%t\n" | |
| 3427 mh-e-user-agent) | |
| 3428 (function-item :tag "Gnus Message package" | |
| 428 | 3429 :format "%t\n" |
| 3430 message-user-agent) | |
| 1333 | 3431 (function-item :tag "Gnus Message with full Gnus features" |
| 3432 :format "%t\n" | |
| 3433 gnus-user-agent) | |
| 428 | 3434 (function :tag "Other")) |
| 3435 :group 'mail) | |
| 3436 | |
| 3437 (defun define-mail-user-agent (symbol composefunc sendfunc | |
| 3438 &optional abortfunc hookvar) | |
| 3439 "Define a symbol to identify a mail-sending package for `mail-user-agent'. | |
| 3440 | |
| 3441 SYMBOL can be any Lisp symbol. Its function definition and/or | |
| 3442 value as a variable do not matter for this usage; we use only certain | |
| 3443 properties on its property list, to encode the rest of the arguments. | |
| 3444 | |
| 3445 COMPOSEFUNC is program callable function that composes an outgoing | |
| 3446 mail message buffer. This function should set up the basics of the | |
| 3447 buffer without requiring user interaction. It should populate the | |
| 3448 standard mail headers, leaving the `to:' and `subject:' headers blank | |
| 3449 by default. | |
| 3450 | |
| 3451 COMPOSEFUNC should accept several optional arguments--the same | |
| 3452 arguments that `compose-mail' takes. See that function's documentation. | |
| 3453 | |
| 3454 SENDFUNC is the command a user would run to send the message. | |
| 3455 | |
| 3456 Optional ABORTFUNC is the command a user would run to abort the | |
| 3457 message. For mail packages that don't have a separate abort function, | |
| 3458 this can be `kill-buffer' (the equivalent of omitting this argument). | |
| 3459 | |
| 3460 Optional HOOKVAR is a hook variable that gets run before the message | |
| 3461 is actually sent. Callers that use the `mail-user-agent' may | |
| 3462 install a hook function temporarily on this hook variable. | |
| 3463 If HOOKVAR is nil, `mail-send-hook' is used. | |
| 3464 | |
| 3465 The properties used on SYMBOL are `composefunc', `sendfunc', | |
| 3466 `abortfunc', and `hookvar'." | |
| 3467 (put symbol 'composefunc composefunc) | |
| 3468 (put symbol 'sendfunc sendfunc) | |
| 3469 (put symbol 'abortfunc (or abortfunc 'kill-buffer)) | |
| 3470 (put symbol 'hookvar (or hookvar 'mail-send-hook))) | |
| 3471 | |
| 2768 | 3472 (define-mail-user-agent 'vm-user-agent |
| 3473 'vm-compose-mail | |
| 3474 'vm-mail-send-and-exit) | |
| 3475 | |
| 428 | 3476 (define-mail-user-agent 'sendmail-user-agent |
| 3477 'sendmail-user-agent-compose 'mail-send-and-exit) | |
| 3478 | |
| 2768 | 3479 ;; Recent GNU sendmail.el does have MIME support, but it's buggy (as of |
| 3480 ;; 2005-05-01.) For example, if you FCC to a file more than once with | |
| 3481 ;; different coding systems, your non-ASCII data will get | |
| 3482 ;; trashed. quoted-printable encoding isn't done by default, attachments | |
| 3483 ;; just add a line: | |
| 3484 ;; | |
| 3485 ;; ===File /path/to/file/here================= | |
| 3486 ;; | |
| 3487 ;; the file's contents, | |
| 3488 ;; | |
| 3489 ;; =========================================== | |
| 3490 ;; | |
| 3491 ;; and hope for the best. Not code we want to use, IMO. | |
| 3492 | |
| 4293 | 3493 (defvar xemacs-default-composefunc-dont-nag nil |
| 3494 "Disable the `xemacs-default-composefunc' nagging; for bug reports.") | |
| 3495 | |
| 2768 | 3496 (defun xemacs-default-composefunc (&rest args) |
| 3497 "Warn that the default mail-reading package is heinously underfeatured; | |
| 3498 compose a mail using it, all the same. " | |
| 4293 | 3499 (unless (or noninteractive xemacs-default-composefunc-dont-nag) |
| 2977 | 3500 (warn " |
| 2768 | 3501 |
| 3502 Defaulting to the GNU Emacs-derived `sendmail.el' mail client. This facility, | |
| 3503 while part of base XEmacs, is heinously underfeatured, and not going to get | |
| 3504 better in the medium term. We include it so that bug reports work without | |
| 3505 packages; we suggest that you choose and/or install one of the other mail | |
| 3506 clients from packages if you're doing something other than M-x | |
| 3507 report-xemacs-bug , or even if you are reporting bugs regularly. | |
| 3508 | |
| 3509 To choose a package from those installed, click on \"Options\" -> | |
| 3510 \"Internet\" -> \"Compose Mail With ...\" and decide on one from the | |
| 3511 list. Gnus and VM are full-featured and have active user communities. | |
| 3512 | |
| 3513 To disable this warning and stick with the old behavior, you can explicitly | |
| 2977 | 3514 initialize `mail-user-agent' to 'sendmail-user-agent . ")) |
| 2768 | 3515 (setq mail-user-agent 'sendmail-user-agent) |
| 3516 (apply (get 'sendmail-user-agent 'composefunc) args)) | |
| 3517 | |
| 3518 (defun xemacs-default-sendfunc (&rest args) | |
| 3519 "Set `mail-user-agent' to `sendmail-user-agent'; call the send function | |
| 3520 associated with that package, passing it the supplied arguments. " | |
| 3521 (setq mail-user-agent 'sendmail-user-agent) | |
| 3522 (apply (get 'sendmail-user-agent 'sendfunc) args)) | |
| 3523 | |
| 3524 (define-mail-user-agent 'xemacs-default-mail-user-agent | |
| 3525 'xemacs-default-composefunc 'xemacs-default-sendfunc) | |
| 3526 | |
| 428 | 3527 (define-mail-user-agent 'message-user-agent |
| 3528 'message-mail 'message-send-and-exit | |
| 3529 'message-kill-buffer 'message-send-hook) | |
| 3530 | |
| 1333 | 3531 (defun rfc822-goto-eoh () |
| 3532 ;; Go to header delimiter line in a mail message, following RFC822 rules | |
| 3533 (goto-char (point-min)) | |
| 3534 (while (looking-at "^[^: \n]+:\\|^[ \t]") | |
| 3535 (forward-line 1)) | |
| 3536 (point)) | |
| 3537 | |
| 428 | 3538 (defun sendmail-user-agent-compose (&optional to subject other-headers continue |
| 3539 switch-function yank-action | |
| 3540 send-actions) | |
| 3541 (if switch-function | |
| 3542 (let ((special-display-buffer-names nil) | |
| 3543 (special-display-regexps nil) | |
| 3544 (same-window-buffer-names nil) | |
| 3545 (same-window-regexps nil)) | |
| 3546 (funcall switch-function "*mail*"))) | |
| 3547 (let ((cc (cdr (assoc-ignore-case "cc" other-headers))) | |
| 1333 | 3548 (in-reply-to (cdr (assoc-ignore-case "in-reply-to" other-headers))) |
| 3549 (body (cdr (assoc-ignore-case "body" other-headers)))) | |
| 776 | 3550 (or (declare-fboundp |
| 3551 (mail continue to subject in-reply-to cc yank-action send-actions)) | |
| 428 | 3552 continue |
| 3553 (error "Message aborted")) | |
| 3554 (save-excursion | |
| 1333 | 3555 (rfc822-goto-eoh) |
| 428 | 3556 (while other-headers |
| 1333 | 3557 (unless (member* (car (car other-headers)) |
| 3558 '("in-reply-to" "cc" "body") | |
| 3559 :test 'equalp) | |
| 428 | 3560 (insert (car (car other-headers)) ": " |
| 3561 (cdr (car other-headers)) "\n")) | |
| 3562 (setq other-headers (cdr other-headers))) | |
| 1333 | 3563 (when body |
| 3564 (forward-line 1) | |
| 3565 (insert body)) | |
| 428 | 3566 t))) |
| 3567 | |
| 3568 (define-mail-user-agent 'mh-e-user-agent | |
| 1333 | 3569 'mh-smail-batch 'mh-send-letter 'mh-fully-kill-draft |
| 428 | 3570 'mh-before-send-letter-hook) |
| 3571 | |
| 3572 (defun compose-mail (&optional to subject other-headers continue | |
| 3573 switch-function yank-action send-actions) | |
| 3574 "Start composing a mail message to send. | |
| 3575 This uses the user's chosen mail composition package | |
| 3576 as selected with the variable `mail-user-agent'. | |
| 3577 The optional arguments TO and SUBJECT specify recipients | |
| 3578 and the initial Subject field, respectively. | |
| 3579 | |
| 3580 OTHER-HEADERS is an alist specifying additional | |
| 3581 header fields. Elements look like (HEADER . VALUE) where both | |
| 3582 HEADER and VALUE are strings. | |
| 3583 | |
| 3584 CONTINUE, if non-nil, says to continue editing a message already | |
| 3585 being composed. | |
| 3586 | |
| 3587 SWITCH-FUNCTION, if non-nil, is a function to use to | |
| 3588 switch to and display the buffer used for mail composition. | |
| 3589 | |
| 3590 YANK-ACTION, if non-nil, is an action to perform, if and when necessary, | |
| 3591 to insert the raw text of the message being replied to. | |
| 3592 It has the form (FUNCTION . ARGS). The user agent will apply | |
| 3593 FUNCTION to ARGS, to insert the raw text of the original message. | |
| 3594 \(The user agent will also run `mail-citation-hook', *after* the | |
| 3595 original text has been inserted in this way.) | |
| 3596 | |
| 3597 SEND-ACTIONS is a list of actions to call when the message is sent. | |
| 3598 Each action has the form (FUNCTION . ARGS)." | |
| 3599 (interactive | |
| 3600 (list nil nil nil current-prefix-arg)) | |
| 3601 (let ((function (get mail-user-agent 'composefunc))) | |
| 3602 (funcall function to subject other-headers continue | |
| 3603 switch-function yank-action send-actions))) | |
| 3604 | |
| 3605 (defun compose-mail-other-window (&optional to subject other-headers continue | |
| 3606 yank-action send-actions) | |
| 3607 "Like \\[compose-mail], but edit the outgoing message in another window." | |
| 3608 (interactive | |
| 3609 (list nil nil nil current-prefix-arg)) | |
| 3610 (compose-mail to subject other-headers continue | |
| 3611 'switch-to-buffer-other-window yank-action send-actions)) | |
| 3612 | |
| 3613 | |
| 3614 (defun compose-mail-other-frame (&optional to subject other-headers continue | |
| 3615 yank-action send-actions) | |
| 3616 "Like \\[compose-mail], but edit the outgoing message in another frame." | |
| 3617 (interactive | |
| 3618 (list nil nil nil current-prefix-arg)) | |
| 3619 (compose-mail to subject other-headers continue | |
| 3620 'switch-to-buffer-other-frame yank-action send-actions)) | |
| 3621 | |
| 3622 | |
| 442 | 3623 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
| 3624 ;; set variable ;; | |
| 3625 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
| 3626 | |
| 1333 | 3627 (defvar set-variable-value-history nil |
| 3628 "History of values entered with `set-variable'.") | |
| 3629 | |
| 428 | 3630 (defun set-variable (var val) |
| 3631 "Set VARIABLE to VALUE. VALUE is a Lisp object. | |
| 1333 | 3632 When using this interactively, enter a Lisp object for VALUE. |
| 428 | 3633 If you want VALUE to be a string, you must surround it with doublequotes. |
| 1333 | 3634 VALUE is used literally, not evaluated. |
| 3635 | |
| 428 | 3636 If VARIABLE is a specifier, VALUE is added to it as an instantiator in |
| 3637 the 'global locale with nil tag set (see `set-specifier'). | |
| 3638 | |
| 3639 If VARIABLE has a `variable-interactive' property, that is used as if | |
| 1333 | 3640 it were the arg to `interactive' (which see) to interactively read VALUE. |
| 3641 | |
| 3642 If VARIABLE has been defined with `defcustom', then the type information | |
| 3643 in the definition is used to check that VALUE is valid." | |
| 428 | 3644 (interactive |
| 1333 | 3645 (let* ((default-var (variable-at-point)) |
| 3646 (var (if (symbolp default-var) | |
| 3647 (read-variable (format "Set variable (default %s): " default-var) | |
| 3648 default-var) | |
| 3649 (read-variable "Set variable: "))) | |
| 3650 (minibuffer-help-form '(describe-variable var)) | |
| 3651 (prop (get var 'variable-interactive)) | |
| 3652 (prompt (format "Set %s to value: " var)) | |
| 3653 (val (if prop | |
| 3654 ;; Use VAR's `variable-interactive' property | |
| 3655 ;; as an interactive spec for prompting. | |
| 3656 (call-interactively `(lambda (arg) | |
| 3657 (interactive ,prop) | |
| 3658 arg)) | |
| 3659 (read | |
| 3660 (read-string prompt nil | |
| 3661 'set-variable-value-history))))) | |
| 3662 (list var val))) | |
| 3663 | |
| 3664 (let ((type (get var 'custom-type))) | |
| 3665 (when type | |
| 3666 ;; Match with custom type. | |
| 3667 (require 'cus-edit) | |
| 3668 (setq type (widget-convert type)) | |
| 3669 (unless (widget-apply type :match val) | |
| 3670 (error "Value `%S' does not match type %S of %S" | |
| 3671 val (car type) var)))) | |
| 428 | 3672 (if (and (boundp var) (specifierp (symbol-value var))) |
| 3673 (set-specifier (symbol-value var) val) | |
| 1333 | 3674 (set var val)) |
| 3675 | |
| 3676 ;; Force a thorough redisplay for the case that the variable | |
| 3677 ;; has an effect on the display, like `tab-width' has. | |
| 3678 (force-mode-line-update)) | |
| 3679 | |
| 3680 | |
| 3681 | |
| 3682 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
| 3683 ;; forking a twin copy of a buffer ;; | |
| 3684 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
| 3685 | |
| 3686 (defvar clone-buffer-hook nil | |
| 3687 "Normal hook to run in the new buffer at the end of `clone-buffer'.") | |
| 3688 | |
| 3689 (defun clone-process (process &optional newname) | |
| 3690 "Create a twin copy of PROCESS. | |
| 3691 If NEWNAME is nil, it defaults to PROCESS' name; | |
| 3692 NEWNAME is modified by adding or incrementing <N> at the end as necessary. | |
| 3693 If PROCESS is associated with a buffer, the new process will be associated | |
| 3694 with the current buffer instead. | |
| 3695 Returns nil if PROCESS has already terminated." | |
| 3696 (setq newname (or newname (process-name process))) | |
| 3697 (if (string-match "<[0-9]+>\\'" newname) | |
| 3698 (setq newname (substring newname 0 (match-beginning 0)))) | |
| 3699 (when (memq (process-status process) '(run stop open)) | |
| 3700 (let* ((process-connection-type (process-tty-name process)) | |
| 3701 (old-kwoq (process-kill-without-query process nil)) | |
| 3702 (new-process | |
| 3703 (if (memq (process-status process) '(open)) | |
| 3704 (apply 'open-network-stream newname | |
| 3705 (if (process-buffer process) (current-buffer)) | |
| 3706 ;; FSF: (process-contact process) | |
| 3707 (process-command process)) | |
| 3708 (apply 'start-process newname | |
| 3709 (if (process-buffer process) (current-buffer)) | |
| 3710 (process-command process))))) | |
| 3711 (process-kill-without-query new-process old-kwoq) | |
| 3712 (process-kill-without-query process old-kwoq) | |
| 3713 ;; FSF 21.2: | |
| 3714 ; (set-process-inherit-coding-system-flag | |
| 3715 ; new-process (process-inherit-coding-system-flag process)) | |
| 3716 (set-process-filter new-process (process-filter process)) | |
| 3717 (set-process-sentinel new-process (process-sentinel process)) | |
| 3718 new-process))) | |
| 3719 | |
| 3720 ;; things to maybe add (currently partly covered by `funcall mode': | |
| 3721 ;; - syntax-table | |
| 3722 ;; - overlays | |
| 3723 (defun clone-buffer (&optional newname display-flag) | |
| 3724 "Create a twin copy of the current buffer. | |
| 3725 If NEWNAME is nil, it defaults to the current buffer's name; | |
| 3726 NEWNAME is modified by adding or incrementing <N> at the end as necessary. | |
| 3727 | |
| 3728 If DISPLAY-FLAG is non-nil, the new buffer is shown with `pop-to-buffer'. | |
| 3729 This runs the normal hook `clone-buffer-hook' in the new buffer | |
| 3730 after it has been set up properly in other respects." | |
| 3731 (interactive (list (if current-prefix-arg (read-string "Name: ")) | |
| 3732 t)) | |
| 3733 (if buffer-file-name | |
| 3734 (error "Cannot clone a file-visiting buffer")) | |
| 3735 (if (get major-mode 'no-clone) | |
| 3736 (error "Cannot clone a buffer in %s mode" mode-name)) | |
| 3737 (setq newname (or newname (buffer-name))) | |
| 3738 (if (string-match "<[0-9]+>\\'" newname) | |
| 3739 (setq newname (substring newname 0 (match-beginning 0)))) | |
| 3740 (let ((buf (current-buffer)) | |
| 3741 (ptmin (point-min)) | |
| 3742 (ptmax (point-max)) | |
| 3743 (pt (point)) | |
| 3744 (mk (mark t)) ;(if mark-active (mark t))) | |
| 3745 (modified (buffer-modified-p)) | |
| 3746 (mode major-mode) | |
| 3747 (lvars (buffer-local-variables)) | |
| 3748 (process (get-buffer-process (current-buffer))) | |
| 3749 (new (generate-new-buffer (or newname (buffer-name))))) | |
| 3750 (save-restriction | |
| 3751 (widen) | |
| 3752 (with-current-buffer new | |
| 3753 (insert-buffer-substring buf))) | |
| 3754 (with-current-buffer new | |
| 3755 (narrow-to-region ptmin ptmax) | |
| 3756 (goto-char pt) | |
| 3757 (if mk (set-mark mk)) | |
| 3758 (set-buffer-modified-p modified) | |
| 3759 | |
| 3760 ;; Clone the old buffer's process, if any. | |
| 3761 (when process (clone-process process)) | |
| 3762 | |
| 3763 ;; Now set up the major mode. | |
| 3764 (funcall mode) | |
| 3765 | |
| 3766 ;; Set up other local variables. | |
|
4783
e29fcfd8df5f
Eliminate most core code byte-compile warnings.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4687
diff
changeset
|
3767 (mapc (lambda (v) |
|
e29fcfd8df5f
Eliminate most core code byte-compile warnings.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4687
diff
changeset
|
3768 (condition-case () ;in case var is read-only |
|
e29fcfd8df5f
Eliminate most core code byte-compile warnings.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4687
diff
changeset
|
3769 (if (symbolp v) |
|
e29fcfd8df5f
Eliminate most core code byte-compile warnings.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4687
diff
changeset
|
3770 (makunbound v) |
|
e29fcfd8df5f
Eliminate most core code byte-compile warnings.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4687
diff
changeset
|
3771 (set (make-local-variable (car v)) (cdr v))) |
|
e29fcfd8df5f
Eliminate most core code byte-compile warnings.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4687
diff
changeset
|
3772 (error nil))) |
|
e29fcfd8df5f
Eliminate most core code byte-compile warnings.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4687
diff
changeset
|
3773 lvars) |
| 1333 | 3774 |
| 3775 ;; Run any hooks (typically set up by the major mode | |
| 3776 ;; for cloning to work properly). | |
| 3777 (run-hooks 'clone-buffer-hook)) | |
| 3778 (if display-flag (pop-to-buffer new)) | |
| 3779 new)) | |
| 3780 | |
| 3781 | |
| 3782 (defun clone-indirect-buffer (newname display-flag &optional norecord) | |
| 3783 "Create an indirect buffer that is a twin copy of the current buffer. | |
| 3784 | |
| 3785 Give the indirect buffer name NEWNAME. Interactively, read NEW-NAME | |
| 3786 from the minibuffer when invoked with a prefix arg. If NEWNAME is nil | |
| 3787 or if not called with a prefix arg, NEWNAME defaults to the current | |
| 3788 buffer's name. The name is modified by adding a `<N>' suffix to it | |
| 3789 or by incrementing the N in an existing suffix. | |
| 3790 | |
| 3791 DISPLAY-FLAG non-nil means show the new buffer with `pop-to-buffer'. | |
| 3792 This is always done when called interactively. | |
| 3793 | |
| 3794 Optional last arg NORECORD non-nil means do not put this buffer at the | |
| 3795 front of the list of recently selected ones." | |
| 3796 (interactive (list (if current-prefix-arg | |
| 3797 (read-string "BName of indirect buffer: ")) | |
| 3798 t)) | |
| 3799 (setq newname (or newname (buffer-name))) | |
| 3800 (if (string-match "<[0-9]+>\\'" newname) | |
| 3801 (setq newname (substring newname 0 (match-beginning 0)))) | |
| 3802 (let* ((name (generate-new-buffer-name newname)) | |
| 3803 (buffer (make-indirect-buffer (current-buffer) name t))) | |
| 3804 (when display-flag | |
| 3805 (pop-to-buffer buffer norecord)) | |
| 3806 buffer)) | |
| 3807 | |
| 3808 | |
| 3809 (defun clone-indirect-buffer-other-window (buffer &optional norecord) | |
| 3810 "Create an indirect buffer that is a twin copy of BUFFER. | |
| 3811 Select the new buffer in another window. | |
| 3812 Optional second arg NORECORD non-nil means do not put this buffer at | |
| 3813 the front of the list of recently selected ones." | |
| 3814 (interactive "bClone buffer in other window: ") | |
| 3815 (let ((pop-up-windows t)) | |
| 3816 (set-buffer buffer) | |
| 3817 (clone-indirect-buffer nil t norecord))) | |
| 3818 | |
| 3819 ;; END SYNCHED WITH FSF 21.2. | |
| 442 | 3820 |
| 428 | 3821 |
| 442 | 3822 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
| 3823 ;; case changing code ;; | |
| 3824 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
| 428 | 3825 |
| 3826 ;; A bunch of stuff was moved elsewhere: | |
| 3827 ;; completion-list-mode-map | |
| 3828 ;; completion-reference-buffer | |
| 3829 ;; completion-base-size | |
| 3830 ;; delete-completion-window | |
| 3831 ;; previous-completion | |
| 3832 ;; next-completion | |
| 3833 ;; choose-completion | |
| 3834 ;; choose-completion-delete-max-match | |
| 3835 ;; choose-completion-string | |
| 3836 ;; completion-list-mode | |
| 3837 ;; completion-fixup-function | |
| 3838 ;; completion-setup-function | |
| 3839 ;; switch-to-completions | |
| 3840 ;; event stuffs | |
| 3841 ;; keypad stuffs | |
| 3842 | |
| 3843 ;; The rest of this file is not in Lisp in FSF | |
| 3844 (defun capitalize-region-or-word (arg) | |
| 3845 "Capitalize the selected region or the following word (or ARG words)." | |
| 3846 (interactive "p") | |
| 3847 (if (region-active-p) | |
| 3848 (capitalize-region (region-beginning) (region-end)) | |
| 3849 (capitalize-word arg))) | |
| 3850 | |
| 3851 (defun upcase-region-or-word (arg) | |
| 3852 "Upcase the selected region or the following word (or ARG words)." | |
| 3853 (interactive "p") | |
| 3854 (if (region-active-p) | |
| 3855 (upcase-region (region-beginning) (region-end)) | |
| 3856 (upcase-word arg))) | |
| 3857 | |
| 3858 (defun downcase-region-or-word (arg) | |
| 3859 "Downcase the selected region or the following word (or ARG words)." | |
| 3860 (interactive "p") | |
| 3861 (if (region-active-p) | |
| 3862 (downcase-region (region-beginning) (region-end)) | |
| 3863 (downcase-word arg))) | |
| 3864 | |
| 442 | 3865 ;; #### not localized |
| 3866 (defvar uncapitalized-title-words | |
| 3867 '("the" "a" "an" "in" "of" "for" "to" "and" "but" "at" "on" "as" "by")) | |
| 3868 | |
| 3869 (defvar uncapitalized-title-word-regexp | |
| 3870 (concat "[ \t]*\\(" (mapconcat #'identity uncapitalized-title-words "\\|") | |
| 3871 "\\)\\>")) | |
| 3872 | |
| 3873 (defun capitalize-string-as-title (string) | |
| 3874 "Capitalize the words in the string, except for small words (as in titles). | |
| 3875 The words not capitalized are specified in `uncapitalized-title-words'." | |
|
4946
9b5d4b35f8d7
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Ben Wing <ben@xemacs.org>
parents:
4869
diff
changeset
|
3876 (with-string-as-buffer-contents string |
|
9b5d4b35f8d7
(main branch) redo capitalize-string-as-title
Ben Wing <ben@xemacs.org>
parents:
4869
diff
changeset
|
3877 (capitalize-region-as-title (point-min) (point-max)))) |
| 442 | 3878 |
| 3879 (defun capitalize-region-as-title (b e &optional buffer) | |
| 3880 "Capitalize the words in the region, except for small words (as in titles). | |
| 3881 The words not capitalized are specified in `uncapitalized-title-words'." | |
| 3882 (interactive "r") | |
| 3883 (save-excursion | |
| 3884 (and buffer | |
| 3885 (set-buffer buffer)) | |
| 3886 (save-restriction | |
| 3887 (narrow-to-region b e) | |
| 3888 (goto-char (point-min)) | |
| 3889 (let ((first t)) | |
| 3890 (while (< (point) (point-max)) | |
| 3891 (if (or first | |
| 3892 (not (looking-at uncapitalized-title-word-regexp))) | |
| 3893 (capitalize-word 1) | |
| 3894 (forward-word 1)) | |
| 3895 (setq first nil)))))) | |
| 3896 | |
| 3897 | |
| 3898 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
| 3899 ;; zmacs active region code ;; | |
| 3900 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
| 3901 | |
| 428 | 3902 ;; Most of the zmacs code is now in elisp. The only thing left in C |
| 3903 ;; are the variables zmacs-regions, zmacs-region-active-p and | |
| 3904 ;; zmacs-region-stays plus the function zmacs_update_region which | |
| 3905 ;; simply calls the lisp level zmacs-update-region. It must remain | |
| 3906 ;; for convenience, since it is called by core C code. | |
| 3907 | |
| 442 | 3908 ;; XEmacs |
| 3909 (defun activate-region () | |
| 3910 "Activate the region, if `zmacs-regions' is true. | |
| 3911 Setting `zmacs-regions' to true causes LISPM-style active regions to be used. | |
| 3912 This function has no effect if `zmacs-regions' is false." | |
| 3913 (interactive) | |
| 3914 (and zmacs-regions (zmacs-activate-region))) | |
| 3915 | |
| 3916 ;; XEmacs | |
| 3917 (defsubst region-exists-p () | |
| 3918 "Return t if the region exists. | |
| 3919 If active regions are in use (i.e. `zmacs-regions' is true), this means that | |
| 3920 the region is active. Otherwise, this means that the user has pushed | |
| 3921 a mark in this buffer at some point in the past. | |
| 3922 The functions `region-beginning' and `region-end' can be used to find the | |
| 502 | 3923 limits of the region. |
| 3924 | |
| 3925 You should use this, *NOT* `region-active-p', in a menu item | |
| 3926 specification that you want grayed out when the region is not active: | |
| 3927 | |
| 3928 [ ... ... :active (region-exists-p)] | |
| 3929 | |
| 3930 This correctly caters to the user's setting of `zmacs-regions'." | |
| 442 | 3931 (not (null (mark)))) |
| 3932 | |
| 3933 ;; XEmacs | |
| 3934 (defun region-active-p () | |
| 2611 | 3935 "Return non-nil if the region is active in the current buffer. |
| 442 | 3936 If `zmacs-regions' is true, this is equivalent to `region-exists-p'. |
| 502 | 3937 Otherwise, this function always returns false. |
| 3938 | |
| 3939 You should generally *NOT* use this in a menu item specification that you | |
| 3940 want grayed out when the region is not active. Instead, use this: | |
| 3941 | |
| 3942 [ ... ... :active (region-exists-p)] | |
| 3943 | |
| 3944 Which correctly caters to the user's setting of `zmacs-regions'." | |
| 2611 | 3945 (and zmacs-regions zmacs-region-extent |
| 3946 (eq (current-buffer) (zmacs-region-buffer)))) | |
| 442 | 3947 |
| 428 | 3948 (defvar zmacs-activate-region-hook nil |
| 3949 "Function or functions called when the region becomes active; | |
| 3950 see the variable `zmacs-regions'.") | |
| 3951 | |
| 3952 (defvar zmacs-deactivate-region-hook nil | |
| 3953 "Function or functions called when the region becomes inactive; | |
| 3954 see the variable `zmacs-regions'.") | |
| 3955 | |
| 3956 (defvar zmacs-update-region-hook nil | |
| 3957 "Function or functions called when the active region changes. | |
| 3958 This is called after each command that sets `zmacs-region-stays' to t. | |
| 3959 See the variable `zmacs-regions'.") | |
| 3960 | |
| 487 | 3961 (add-hook 'zmacs-deactivate-region-hook 'disown-selection) |
| 3962 (add-hook 'zmacs-activate-region-hook 'activate-region-as-selection) | |
| 3963 (add-hook 'zmacs-update-region-hook 'activate-region-as-selection) | |
| 3964 | |
| 428 | 3965 (defvar zmacs-region-extent nil |
| 3966 "The extent of the zmacs region; don't use this.") | |
| 3967 | |
| 3968 (defvar zmacs-region-rectangular-p nil | |
| 3969 "Whether the zmacs region is a rectangle; don't use this.") | |
| 3970 | |
| 3971 (defun zmacs-make-extent-for-region (region) | |
| 3972 ;; Given a region, this makes an extent in the buffer which holds that | |
| 3973 ;; region, for highlighting purposes. If the region isn't associated | |
| 3974 ;; with a buffer, this does nothing. | |
| 3975 (let ((buffer nil) | |
| 3976 (valid (and (extentp zmacs-region-extent) | |
| 3977 (extent-object zmacs-region-extent) | |
| 3978 (buffer-live-p (extent-object zmacs-region-extent)))) | |
| 3979 start end) | |
| 3980 (cond ((consp region) | |
| 3981 (setq start (min (car region) (cdr region)) | |
| 3982 end (max (car region) (cdr region)) | |
| 3983 valid (and valid | |
| 3984 (eq (marker-buffer (car region)) | |
| 3985 (extent-object zmacs-region-extent))) | |
| 3986 buffer (marker-buffer (car region)))) | |
| 3987 (t | |
| 3988 (signal 'error (list "Invalid region" region)))) | |
| 3989 | |
| 3990 (if valid | |
| 3991 nil | |
| 3992 ;; The condition case is in case any of the extents are dead or | |
| 3993 ;; otherwise incapacitated. | |
| 3994 (condition-case () | |
| 3995 (if (listp zmacs-region-extent) | |
| 3996 (mapc 'delete-extent zmacs-region-extent) | |
| 3997 (delete-extent zmacs-region-extent)) | |
| 3998 (error nil))) | |
| 3999 | |
| 4000 (if valid | |
| 4001 (set-extent-endpoints zmacs-region-extent start end) | |
| 4002 (setq zmacs-region-extent (make-extent start end buffer)) | |
| 4003 | |
| 4004 ;; Make the extent be closed on the right, which means that if | |
| 4005 ;; characters are inserted exactly at the end of the extent, the | |
| 4006 ;; extent will grow to cover them. This is important for shell | |
| 4007 ;; buffers - suppose one makes a region, and one end is at point-max. | |
| 4008 ;; If the shell produces output, that marker will remain at point-max | |
| 4009 ;; (its position will increase). So it's important that the extent | |
| 4010 ;; exhibit the same behavior, lest the region covered by the extent | |
| 4011 ;; (the visual indication), and the region between point and mark | |
| 4012 ;; (the actual region value) become different! | |
| 4013 (set-extent-property zmacs-region-extent 'end-open nil) | |
| 4014 | |
| 4015 ;; use same priority as mouse-highlighting so that conflicts between | |
| 4016 ;; the region extent and a mouse-highlighted extent are resolved by | |
| 4017 ;; the usual size-and-endpoint-comparison method. | |
| 4018 (set-extent-priority zmacs-region-extent mouse-highlight-priority) | |
| 4019 (set-extent-face zmacs-region-extent 'zmacs-region) | |
| 4020 | |
| 4021 ;; #### It might be better to actually break | |
| 4022 ;; default-mouse-track-next-move-rect out of mouse.el so that we | |
| 4023 ;; can use its logic here. | |
| 4024 (cond | |
| 4025 (zmacs-region-rectangular-p | |
| 4026 (setq zmacs-region-extent (list zmacs-region-extent)) | |
|
5368
ed74d2ca7082
Use ', not #', when a given symbol may not have a function binding at read time
Aidan Kehoe <kehoea@parhasard.net>
parents:
5321
diff
changeset
|
4027 (when-fboundp 'default-mouse-track-next-move-rect |
| 4222 | 4028 (default-mouse-track-next-move-rect start end zmacs-region-extent)) |
| 428 | 4029 )) |
| 4030 | |
| 4031 zmacs-region-extent))) | |
| 4032 | |
| 4033 (defun zmacs-region-buffer () | |
| 4034 "Return the buffer containing the zmacs region, or nil." | |
| 4035 ;; #### this is horrible and kludgy! This stuff needs to be rethought. | |
| 4036 (and zmacs-regions zmacs-region-active-p | |
| 4037 (or (marker-buffer (mark-marker t)) | |
| 4038 (and (extent-live-p zmacs-region-extent) | |
| 4039 (buffer-live-p (extent-object zmacs-region-extent)) | |
| 4040 (extent-object zmacs-region-extent))))) | |
| 4041 | |
| 4042 (defun zmacs-activate-region () | |
| 4043 "Make the region between `point' and `mark' be active (highlighted), | |
| 4044 if `zmacs-regions' is true. Only a very small number of commands | |
| 4045 should ever do this. Calling this function will call the hook | |
| 4046 `zmacs-activate-region-hook', if the region was previously inactive. | |
| 4047 Calling this function ensures that the region stays active after the | |
| 4048 current command terminates, even if `zmacs-region-stays' is not set. | |
| 4049 Returns t if the region was activated (i.e. if `zmacs-regions' if t)." | |
| 4050 (if (not zmacs-regions) | |
| 4051 nil | |
| 4052 (setq zmacs-region-active-p t | |
| 4053 zmacs-region-stays t | |
| 4222 | 4054 zmacs-region-rectangular-p (and-boundp 'mouse-track-rectangle-p |
| 4055 mouse-track-rectangle-p)) | |
| 428 | 4056 (if (marker-buffer (mark-marker t)) |
| 4057 (zmacs-make-extent-for-region (cons (point-marker t) (mark-marker t)))) | |
| 4058 (run-hooks 'zmacs-activate-region-hook) | |
| 4059 t)) | |
| 4060 | |
| 4061 (defun zmacs-deactivate-region () | |
| 4062 "Make the region between `point' and `mark' no longer be active, | |
| 4063 if `zmacs-regions' is true. You shouldn't need to call this; the | |
| 4064 command loop calls it when appropriate. Calling this function will | |
| 4065 call the hook `zmacs-deactivate-region-hook', if the region was | |
| 4066 previously active. Returns t if the region had been active, nil | |
| 4067 otherwise." | |
| 4068 (if (not zmacs-region-active-p) | |
| 4069 nil | |
| 4070 (setq zmacs-region-active-p nil | |
| 4071 zmacs-region-stays nil | |
| 4072 zmacs-region-rectangular-p nil) | |
| 4073 (if zmacs-region-extent | |
| 4074 (let ((inhibit-quit t)) | |
| 4075 (if (listp zmacs-region-extent) | |
| 4076 (mapc 'delete-extent zmacs-region-extent) | |
| 4077 (delete-extent zmacs-region-extent)) | |
| 4078 (setq zmacs-region-extent nil))) | |
| 4079 (run-hooks 'zmacs-deactivate-region-hook) | |
| 4080 t)) | |
| 4081 | |
| 4082 (defun zmacs-update-region () | |
| 4083 "Update the highlighted region between `point' and `mark'. | |
| 4084 You shouldn't need to call this; the command loop calls it | |
| 4085 when appropriate. Calling this function will call the hook | |
| 4086 `zmacs-update-region-hook', if the region is active." | |
| 4087 (when zmacs-region-active-p | |
| 4088 (when (marker-buffer (mark-marker t)) | |
| 4089 (zmacs-make-extent-for-region (cons (point-marker t) | |
| 4090 (mark-marker t)))) | |
| 4091 (run-hooks 'zmacs-update-region-hook))) | |
| 4092 | |
| 442 | 4093 |
| 4094 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
| 4095 ;; message logging code ;; | |
| 4096 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
| 428 | 4097 |
| 4098 ;;; #### Should this be moved to a separate file, for clarity? | |
| 4099 ;;; -hniksic | |
| 4100 | |
| 4101 ;;; The `message-stack' is an alist of labels with messages; the first | |
| 4102 ;;; message in this list is always in the echo area. A call to | |
| 4103 ;;; `display-message' inserts a label/message pair at the head of the | |
| 4104 ;;; list, and removes any other pairs with that label. Calling | |
| 4105 ;;; `clear-message' causes any pair with matching label to be removed, | |
| 4106 ;;; and this may cause the displayed message to change or vanish. If | |
| 4107 ;;; the label arg is nil, the entire message stack is cleared. | |
| 4108 ;;; | |
| 4109 ;;; Message/error filtering will be a little tricker to implement than | |
| 4110 ;;; logging, since messages can be built up incrementally | |
| 4111 ;;; using clear-message followed by repeated calls to append-message | |
| 4112 ;;; (this happens with error messages). For messages which aren't | |
| 4113 ;;; created this way, filtering could be implemented at display-message | |
| 4114 ;;; very easily. | |
| 4115 ;;; | |
| 4116 ;;; Bits of the logging code are borrowed from log-messages.el by | |
| 4117 ;;; Robert Potter (rpotter@grip.cis.upenn.edu). | |
| 4118 | |
| 4119 ;; need this to terminate the currently-displayed message | |
| 4120 ;; ("Loading simple ...") | |
| 4121 (when (and | |
| 4122 (not (fboundp 'display-message)) | |
| 4123 (not (featurep 'debug))) | |
| 1346 | 4124 (set-device-clear-left-side nil nil) |
| 428 | 4125 (send-string-to-terminal "\n")) |
| 4126 | |
| 4127 (defvar message-stack nil | |
| 4128 "An alist of label/string pairs representing active echo-area messages. | |
| 4129 The first element in the list is currently displayed in the echo area. | |
| 4130 Do not modify this directly--use the `message' or | |
| 4131 `display-message'/`clear-message' functions.") | |
| 4132 | |
| 4133 (defvar remove-message-hook 'log-message | |
| 4134 "A function or list of functions to be called when a message is removed | |
| 4135 from the echo area at the bottom of the frame. The label of the removed | |
| 4136 message is passed as the first argument, and the text of the message | |
| 4137 as the second argument.") | |
| 4138 | |
| 4139 (defcustom log-message-max-size 50000 | |
| 4140 "Maximum size of the \" *Message-Log*\" buffer. See `log-message'." | |
| 4141 :type 'integer | |
| 4142 :group 'log-message) | |
| 4143 (make-compatible-variable 'message-log-max 'log-message-max-size) | |
| 4144 | |
| 4145 ;; We used to reject quite a lot of stuff here, but it was a bad idea, | |
| 4146 ;; for two reasons: | |
| 4147 ;; | |
| 4148 ;; a) In most circumstances, you *want* to see the message in the log. | |
| 4149 ;; The explicitly non-loggable messages should be marked as such by | |
| 4150 ;; the issuer. Gratuitous non-displaying of random regexps made | |
| 4151 ;; debugging harder, too (because various reasonable debugging | |
| 4152 ;; messages would get eaten). | |
| 4153 ;; | |
| 4154 ;; b) It slowed things down. Yes, visibly. | |
| 4155 ;; | |
| 4156 ;; So, I left only a few of the really useless ones on this kill-list. | |
| 4157 ;; | |
| 4158 ;; --hniksic | |
| 4159 (defcustom log-message-ignore-regexps | |
| 4160 '(;; Note: adding entries to this list slows down messaging | |
| 440 | 4161 ;; significantly. Wherever possible, use message labels. |
| 428 | 4162 |
| 4163 ;; Often-seen messages | |
| 4164 "\\`\\'" ; empty message | |
| 4165 "\\`\\(Beginning\\|End\\) of buffer\\'" | |
| 4166 ;;"^Quit$" | |
| 4167 ;; completions | |
| 4168 ;; Many packages print this -- impossible to categorize | |
| 4169 ;;"^Making completion list" | |
| 4170 ;; Gnus | |
| 4171 ;; "^No news is no news$" | |
| 4172 ;; "^No more\\( unread\\)? newsgroups$" | |
| 4173 ;; "^Opening [^ ]+ server\\.\\.\\." | |
| 4174 ;; "^[^:]+: Reading incoming mail" | |
| 4175 ;; "^Getting mail from " | |
| 4176 ;; "^\\(Generating Summary\\|Sorting threads\\|Making sparse threads\\|Scoring\\|Checking new news\\|Expiring articles\\|Sending\\)\\.\\.\\." | |
| 4177 ;; "^\\(Fetching headers for\\|Retrieving newsgroup\\|Reading active file\\)" | |
| 4178 ;; "^No more\\( unread\\)? articles" | |
| 4179 ;; "^Deleting article " | |
| 4180 ;; W3 | |
| 4181 ;; "^Parsed [0-9]+ of [0-9]+ ([0-9]+%)" | |
| 4182 ) | |
| 4183 "List of regular expressions matching messages which shouldn't be logged. | |
| 4184 See `log-message'. | |
| 4185 | |
| 3929 | 4186 Adding entries to this list slows down messaging significantly. Wherever |
| 4187 possible, messages which might need to be ignored should be labeled with | |
| 4188 'progress, 'prompt, or 'no-log, so they can be filtered by | |
| 4189 log-message-ignore-labels." | |
| 428 | 4190 :type '(repeat regexp) |
| 4191 :group 'log-message) | |
| 4192 | |
| 4193 (defcustom log-message-ignore-labels | |
| 4194 '(help-echo command progress prompt no-log garbage-collecting auto-saving) | |
| 4195 "List of symbols indicating labels of messages which shouldn't be logged. | |
| 4196 See `display-message' for some common labels. See also `log-message'." | |
| 4197 :type '(repeat (symbol :tag "Label")) | |
| 4198 :group 'log-message) | |
| 4199 | |
| 1703 | 4200 (defcustom redisplay-echo-area-function 'redisplay-echo-area |
| 4201 "The function to call to display echo area buffer." | |
| 4202 :type 'function | |
| 4203 :group 'log-message) | |
| 4204 | |
| 4205 (defcustom undisplay-echo-area-function nil | |
| 3929 | 4206 "The function to call to undisplay echo area buffer. |
| 4207 WARNING: any problem with your function is likely to result in an | |
| 4208 uninterruptible infinite loop. Use of custom functions is therefore not | |
| 4209 recommended." | |
| 4210 :type '(choice (const nil) | |
| 4211 function) | |
| 4212 :group 'log-message) | |
| 4213 | |
| 4214 (defvar undisplay-echo-area-resize-window-allowed t | |
| 4215 "INTERNAL USE ONLY. | |
| 4216 Guards against `undisplay-echo-area-resize-window' infloops. | |
| 4217 Touch this at your own risk.") | |
| 4218 | |
| 4219 (defun undisplay-echo-area-resize-window () | |
| 4220 "Resize idle echo area window to `resize-minibuffer-idle-height'. | |
| 4221 If either `resize-minibuffer-idle-height' or `resize-minibuffer-mode' is nil, | |
| 4222 does nothing. If `resize-minibuffer-window-exactly' is non-nil, always resize | |
| 4223 to this height exactly, otherwise if current height is no larger than this, | |
| 4224 leave it as is." | |
| 4225 (when (default-value undisplay-echo-area-resize-window-allowed) | |
| 4226 (setq-default undisplay-echo-area-resize-window-allowed nil) | |
| 4227 (let* ((mbw (minibuffer-window)) | |
| 4228 (height (window-height mbw))) | |
| 4229 (with-boundp '(resize-minibuffer-idle-height) | |
| 4230 (and resize-minibuffer-mode | |
| 4231 (numberp resize-minibuffer-idle-height) | |
| 4232 (> resize-minibuffer-idle-height 0) | |
| 4233 (unless (if resize-minibuffer-window-exactly | |
| 4234 (= resize-minibuffer-idle-height height) | |
| 4235 (<= resize-minibuffer-idle-height height)) | |
| 4236 (enlarge-window (- resize-minibuffer-idle-height height) | |
| 4237 nil mbw)))) | |
| 4238 (setq-default undisplay-echo-area-resize-window-allowed t)))) | |
| 1703 | 4239 |
| 428 | 4240 ;;Subsumed by view-lossage |
| 4241 ;; Not really, I'm adding it back by popular demand. -slb | |
| 4242 (defun show-message-log () | |
| 4243 "Show the \" *Message-Log*\" buffer, which contains old messages and errors." | |
| 4244 (interactive) | |
| 793 | 4245 (view-lossage t)) |
| 428 | 4246 |
| 4247 (defvar log-message-filter-function 'log-message-filter | |
| 4248 "Value must be a function of two arguments: a symbol (label) and | |
| 4249 a string (message). It should return non-nil to indicate a message | |
| 4250 should be logged. Possible values include 'log-message-filter and | |
| 4251 'log-message-filter-errors-only.") | |
| 4252 | |
| 4253 (defun log-message-filter (label message) | |
| 4254 "Default value of `log-message-filter-function'. | |
| 4255 Messages whose text matches one of the `log-message-ignore-regexps' | |
| 4256 or whose label appears in `log-message-ignore-labels' are not saved." | |
| 4257 (let ((r log-message-ignore-regexps) | |
| 4258 (ok (not (memq label log-message-ignore-labels)))) | |
| 4259 (save-match-data | |
| 4260 (while (and r ok) | |
| 4261 (when (string-match (car r) message) | |
| 4262 (setq ok nil)) | |
| 4263 (setq r (cdr r)))) | |
| 4264 ok)) | |
| 4265 | |
| 4266 (defun log-message-filter-errors-only (label message) | |
| 4267 "For use as the `log-message-filter-function'. Only logs error messages." | |
| 4268 (eq label 'error)) | |
| 4269 | |
| 4270 (defun log-message (label message) | |
| 4271 "Stuff a copy of the message into the \" *Message-Log*\" buffer, | |
| 4272 if it satisfies the `log-message-filter-function'. | |
| 4273 | |
| 4274 For use on `remove-message-hook'." | |
| 4275 (when (and (not noninteractive) | |
| 4276 (funcall log-message-filter-function label message)) | |
| 4277 ;; Use save-excursion rather than save-current-buffer because we | |
| 4278 ;; change the value of point. | |
| 4279 (save-excursion | |
| 4280 (set-buffer (get-buffer-create " *Message-Log*")) | |
| 4281 (goto-char (point-max)) | |
| 4282 ;(insert (concat (upcase (symbol-name label)) ": " message "\n")) | |
| 4283 (let (extent) | |
| 4284 ;; Mark multiline message with an extent, which `view-lossage' | |
| 4285 ;; will recognize. | |
| 793 | 4286 (save-match-data |
| 4287 (when (string-match "\n" message) | |
| 4288 (setq extent (make-extent (point) (point))) | |
| 4289 (set-extent-properties extent '(end-open nil message-multiline t))) | |
| 4290 ) | |
| 428 | 4291 (insert message "\n") |
| 4292 (when extent | |
| 4293 (set-extent-property extent 'end-open t))) | |
| 4294 (when (> (point-max) (max log-message-max-size (point-min))) | |
| 4295 ;; Trim log to ~90% of max size. | |
| 4296 (goto-char (max (- (point-max) | |
| 4297 (truncate (* 0.9 log-message-max-size))) | |
| 4298 (point-min))) | |
| 4299 (forward-line 1) | |
| 4300 (delete-region (point-min) (point)))))) | |
| 4301 | |
| 4302 (defun message-displayed-p (&optional return-string frame) | |
| 4303 "Return a non-nil value if a message is presently displayed in the\n\ | |
| 4304 minibuffer's echo area. If optional argument RETURN-STRING is non-nil,\n\ | |
| 4305 return a string containing the message, otherwise just return t." | |
| 4306 ;; by definition, a message is displayed if the echo area buffer is | |
| 4307 ;; non-empty (see also echo_area_active()). It had better also | |
| 4308 ;; be the case that message-stack is nil exactly when the echo area | |
| 4309 ;; is non-empty. | |
| 4310 (let ((buffer (get-buffer " *Echo Area*"))) | |
| 4311 (and (< (point-min buffer) (point-max buffer)) | |
| 4312 (if return-string | |
| 4313 (buffer-substring nil nil buffer) | |
| 4314 t)))) | |
| 4315 | |
| 4316 ;;; Returns the string which remains in the echo area, or nil if none. | |
| 4317 ;;; If label is nil, the whole message stack is cleared. | |
| 4318 (defun clear-message (&optional label frame stdout-p no-restore) | |
| 4319 "Remove any message with the given LABEL from the message-stack, | |
| 4320 erasing it from the echo area if it's currently displayed there. | |
| 4321 If a message remains at the head of the message-stack and NO-RESTORE | |
| 4322 is nil, it will be displayed. The string which remains in the echo | |
| 4323 area will be returned, or nil if the message-stack is now empty. | |
| 4324 If LABEL is nil, the entire message-stack is cleared. | |
| 3929 | 4325 STDOUT-P is ignored, except for output to stream devices. For streams, |
| 4326 STDOUT-P non-nil directs output to stdout, otherwise to stderr. \(This is | |
| 4327 used only in case of restoring an earlier message from the stack.) | |
| 428 | 4328 |
| 4329 Unless you need the return value or you need to specify a label, | |
| 4330 you should just use (message nil)." | |
| 4331 (or frame (setq frame (selected-frame))) | |
| 4332 (let ((clear-stream (and message-stack (eq 'stream (frame-type frame))))) | |
| 4333 (remove-message label frame) | |
| 502 | 4334 (let ((inhibit-read-only t)) |
| 428 | 4335 (erase-buffer " *Echo Area*")) |
| 1703 | 4336 (if undisplay-echo-area-function |
| 4337 (funcall undisplay-echo-area-function)) | |
| 1346 | 4338 ;; If outputting to the terminal, make sure we clear the left side. |
| 4339 (when (or clear-stream | |
| 4340 (and (eq 'stream (frame-type frame)) | |
| 4341 (not (device-left-side-clear-p (frame-device frame))))) | |
| 4342 (set-device-clear-left-side (frame-device frame) nil) | |
| 4343 (send-string-to-terminal ?\n stdout-p)) | |
| 428 | 4344 (if no-restore |
| 4345 nil ; just preparing to put another msg up | |
| 4346 (if message-stack | |
| 4347 (let ((oldmsg (cdr (car message-stack)))) | |
| 4348 (raw-append-message oldmsg frame stdout-p) | |
| 4349 oldmsg) | |
| 4350 ;; #### Should we (redisplay-echo-area) here? Messes some | |
| 4351 ;; things up. | |
| 4352 nil)))) | |
| 4353 | |
| 4354 (defun remove-message (&optional label frame) | |
| 4355 ;; If label is nil, we want to remove all matching messages. | |
| 4356 ;; Must reverse the stack first to log them in the right order. | |
| 4357 (let ((log nil)) | |
| 4358 (while (and message-stack | |
| 4359 (or (null label) ; null label means clear whole stack | |
| 4360 (eq label (car (car message-stack))))) | |
| 4361 (push (car message-stack) log) | |
| 4362 (setq message-stack (cdr message-stack))) | |
| 4363 (let ((s message-stack)) | |
| 4364 (while (cdr s) | |
| 4365 (let ((msg (car (cdr s)))) | |
| 4366 (if (eq label (car msg)) | |
| 4367 (progn | |
| 4368 (push msg log) | |
| 4369 (setcdr s (cdr (cdr s)))) | |
| 4370 (setq s (cdr s)))))) | |
| 4371 ;; (possibly) log each removed message | |
| 4372 (while log | |
| 793 | 4373 (with-trapping-errors |
| 4374 :operation 'remove-message-hook | |
| 4375 :class 'message-log | |
| 4376 :error-form (progn | |
| 4377 (setq remove-message-hook nil) | |
| 4378 (let ((inhibit-read-only t)) | |
| 4379 (erase-buffer " *Echo Area*"))) | |
| 4380 :resignal t | |
| 4381 (run-hook-with-args 'remove-message-hook | |
| 4382 (car (car log)) (cdr (car log)))) | |
| 428 | 4383 (setq log (cdr log))))) |
| 4384 | |
| 4385 (defun append-message (label message &optional frame stdout-p) | |
| 3929 | 4386 "Add MESSAGE to the message-stack, or append it to the existing text. |
| 4387 LABEL is the class of the message. If it is the same as that of the top of | |
| 4388 the message stack, MESSAGE is appended to the existing message, otherwise | |
| 4389 it is pushed on the stack. | |
| 4390 FRAME determines the minibuffer window to send the message to. | |
| 4391 STDOUT-P is ignored, except for output to stream devices. For streams, | |
| 4392 STDOUT-P non-nil directs output to stdout, otherwise to stderr." | |
| 428 | 4393 (or frame (setq frame (selected-frame))) |
| 1346 | 4394 ;; If outputting to the terminal, make sure output from anyone else clears |
| 4395 ;; the left side first, but don't do it ourselves, otherwise we won't be | |
| 4396 ;; able to append to an existing message. | |
| 4397 (if (eq 'stream (frame-type frame)) | |
| 4398 (set-device-clear-left-side (frame-device frame) nil)) | |
| 428 | 4399 (let ((top (car message-stack))) |
| 4400 (if (eq label (car top)) | |
| 4401 (setcdr top (concat (cdr top) message)) | |
| 4402 (push (cons label message) message-stack))) | |
| 1346 | 4403 (raw-append-message message frame stdout-p) |
| 4404 (if (eq 'stream (frame-type frame)) | |
| 4405 (set-device-clear-left-side (frame-device frame) t))) | |
| 428 | 4406 |
| 3929 | 4407 ;; Really append the message to the echo area. No fiddling with |
| 428 | 4408 ;; message-stack. |
| 4409 (defun raw-append-message (message &optional frame stdout-p) | |
| 4410 (unless (equal message "") | |
| 502 | 4411 (let ((inhibit-read-only t)) |
| 3652 | 4412 (with-current-buffer " *Echo Area*" |
| 4413 (insert-string message) | |
| 3929 | 4414 ;; #### This needs to be conditional; cf discussion by Stefan Monnier |
| 4415 ;; et al on emacs-devel in mid-to-late April 2007. One problem is | |
| 4416 ;; there is no known good way to guess whether the user wants to have | |
| 4417 ;; the echo area height changed on him asynchronously, especially | |
| 4418 ;; after message display. | |
| 4419 ;; There is also a problem where Lisp backtraces get sent to the echo | |
| 4420 ;; area, thus maxing out the window height. Unfortunately, it doesn't | |
| 4421 ;; return to a reasonable size very quickly. | |
| 4422 ;; It is not clear that echo area and minibuffer behavior should be | |
| 4423 ;; linked as we do here. It's OK for now; at least this obeys the | |
| 4424 ;; minibuffer resizing conventions which seem a pretty good guess | |
| 4425 ;; at user preference. | |
| 4426 (when resize-minibuffer-mode | |
| 4427 ;; #### interesting idea, unbearable implementation | |
| 4428 ;; (fill-region (point-min) (point-max)) | |
| 4429 ;; | |
| 4430 ;; #### We'd like to be able to do something like | |
| 4431 ;; | |
| 4432 ;; (save-window-excursion | |
| 4433 ;; (select-window (minibuffer-window frame)) | |
| 4434 ;; (resize-minibuffer-window)))) | |
| 4435 ;; | |
| 4436 ;; but that can't work, because the echo area isn't a real window! | |
| 4437 ;; We should fix that, but this is an approximation, duplicating the | |
| 4438 ;; resize-minibuffer code. | |
| 4439 (let* ((mbw (minibuffer-window frame)) | |
| 4440 (height (window-height mbw)) | |
| 4441 (lines (ceiling (/ (- (point-max) (point-min)) | |
| 4442 (- (window-width mbw) 1.0))))) | |
| 4443 (and (numberp resize-minibuffer-window-max-height) | |
| 4444 (> resize-minibuffer-window-max-height 0) | |
| 4445 (setq lines (min lines | |
| 4446 resize-minibuffer-window-max-height))) | |
| 4447 (or (if resize-minibuffer-window-exactly | |
| 4448 (= lines height) | |
| 4449 (<= lines height)) | |
| 4450 (enlarge-window (- lines height) nil mbw))))) | |
| 428 | 4451 |
| 4452 ;; Don't redisplay the echo area if we are executing a macro. | |
| 4453 (if (not executing-kbd-macro) | |
| 3929 | 4454 ;; Conditionalizing on the device type in this way isn't clean, but |
| 4455 ;; neither is having a device method, as I originally implemented | |
| 4456 ;; it: all non-stream devices behave in the same way. Perhaps | |
| 4457 ;; the cleanest way is to make the concept of a "redisplayable" | |
| 4458 ;; device, which stream devices are not. Look into this more if | |
| 4459 ;; we ever create another non-redisplayable device type (e.g. | |
| 4460 ;; processes? printers?). | |
| 428 | 4461 (if (eq 'stream (frame-type frame)) |
| 4462 (send-string-to-terminal message stdout-p (frame-device frame)) | |
| 1703 | 4463 (funcall redisplay-echo-area-function)))))) |
| 428 | 4464 |
| 4465 (defun display-message (label message &optional frame stdout-p) | |
| 4466 "Print a one-line message at the bottom of the frame. First argument | |
| 4467 LABEL is an identifier for this message. MESSAGE is the string to display. | |
| 4468 Use `clear-message' to remove a labelled message. | |
| 3929 | 4469 STDOUT-P is ignored, except for output to stream devices. For streams, |
| 4470 STDOUT-P non-nil directs output to stdout, otherwise to stderr. | |
| 428 | 4471 |
| 4472 Here are some standard labels (those marked with `*' are not logged | |
| 4473 by default--see the `log-message-ignore-labels' variable): | |
| 4474 message default label used by the `message' function | |
| 4475 error default label used for reporting errors | |
| 4476 * progress progress indicators like \"Converting... 45%\" | |
| 4477 * prompt prompt-like messages like \"I-search: foo\" | |
| 4478 * command helper command messages like \"Mark set\" | |
| 4479 * no-log messages that should never be logged" | |
| 4480 (clear-message label frame stdout-p t) | |
| 4481 (append-message label message frame stdout-p)) | |
| 4482 | |
| 4483 (defun current-message (&optional frame) | |
| 4484 "Return the current message in the echo area, or nil. | |
| 4485 The FRAME argument is currently unused." | |
| 4486 (cdr (car message-stack))) | |
| 4487 | |
| 4488 ;;; may eventually be frame-dependent | |
| 4489 (defun current-message-label (&optional frame) | |
| 4490 (car (car message-stack))) | |
| 4491 | |
| 4492 (defun message (fmt &rest args) | |
| 4493 "Print a one-line message at the bottom of the frame. | |
| 4494 The arguments are the same as to `format'. | |
| 4495 | |
| 4496 If the only argument is nil, clear any existing message; let the | |
| 4497 minibuffer contents show." | |
| 4498 ;; questionable junk in the C code | |
| 4499 ;; (if (framep default-minibuffer-frame) | |
| 4500 ;; (make-frame-visible default-minibuffer-frame)) | |
| 4501 (if (and (null fmt) (null args)) | |
| 4502 (prog1 nil | |
| 4503 (clear-message nil)) | |
| 4504 (let ((str (apply 'format fmt args))) | |
| 4505 (display-message 'message str) | |
| 4506 str))) | |
| 4507 | |
| 4508 (defun lmessage (label fmt &rest args) | |
| 4509 "Print a one-line message at the bottom of the frame. | |
| 4510 First argument LABEL is an identifier for this message. The rest of the | |
| 4511 arguments are the same as to `format'. | |
| 4512 | |
| 4513 See `display-message' for a list of standard labels." | |
| 4514 (if (and (null fmt) (null args)) | |
| 4515 (prog1 nil | |
| 4516 (clear-message label nil)) | |
| 4517 (let ((str (apply 'format fmt args))) | |
| 4518 (display-message label str) | |
| 4519 str))) | |
| 4520 | |
| 442 | 4521 |
| 4522 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
| 4523 ;; warning code ;; | |
| 4524 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
| 428 | 4525 |
| 4526 (defcustom log-warning-minimum-level 'info | |
| 4527 "Minimum level of warnings that should be logged. | |
| 4528 The warnings in levels below this are completely ignored, as if they never | |
| 4529 happened. | |
| 4530 | |
| 4531 The recognized warning levels, in decreasing order of priority, are | |
| 793 | 4532 'emergency, 'critical, 'error, 'warning, 'alert, 'notice, 'info, and |
| 428 | 4533 'debug. |
| 4534 | |
| 4535 See also `display-warning-minimum-level'. | |
| 4536 | |
| 4537 You can also control which warnings are displayed on a class-by-class | |
| 4538 basis. See `display-warning-suppressed-classes' and | |
| 793 | 4539 `log-warning-suppressed-classes'. |
| 4540 | |
| 3064 | 4541 For a description of the meaning of the levels, see `display-warning'." |
| 793 | 4542 :type '(choice (const emergency) (const critical) |
| 4543 (const error) (const warning) (const alert) (const notice) | |
| 428 | 4544 (const info) (const debug)) |
| 4545 :group 'warnings) | |
| 4546 | |
| 793 | 4547 (defcustom display-warning-minimum-level 'warning |
| 4548 "Minimum level of warnings that cause the warnings buffer to be displayed. | |
| 4549 Warnings at this level or higher will force the *Warnings* buffer, in which | |
| 4550 the warnings are logged, to be displayed. The warnings in levels below | |
| 4551 this, but at least as high as `log-warning-suppressed-classes', will be | |
| 4552 shown in the minibuffer. | |
| 428 | 4553 |
| 4554 The recognized warning levels, in decreasing order of priority, are | |
| 793 | 4555 'emergency, 'critical, 'error, 'warning, 'alert, 'notice, 'info, and |
| 428 | 4556 'debug. |
| 4557 | |
| 4558 See also `log-warning-minimum-level'. | |
| 4559 | |
| 4560 You can also control which warnings are displayed on a class-by-class | |
| 4561 basis. See `display-warning-suppressed-classes' and | |
| 793 | 4562 `log-warning-suppressed-classes'. |
| 4563 | |
| 3064 | 4564 For a description of the meaning of the levels, see `display-warning'." |
| 793 | 4565 :type '(choice (const emergency) (const critical) |
| 4566 (const error) (const warning) (const alert) (const notice) | |
| 428 | 4567 (const info) (const debug)) |
| 4568 :group 'warnings) | |
| 4569 | |
| 4570 (defvar log-warning-suppressed-classes nil | |
| 4571 "List of classes of warnings that shouldn't be logged or displayed. | |
| 4572 If any of the CLASS symbols associated with a warning is the same as | |
| 4573 any of the symbols listed here, the warning will be completely ignored, | |
| 4574 as it they never happened. | |
| 4575 | |
| 4576 NOTE: In most circumstances, you should *not* set this variable. | |
| 4577 Set `display-warning-suppressed-classes' instead. That way the suppressed | |
| 4578 warnings are not displayed but are still unobtrusively logged. | |
| 4579 | |
| 4580 See also `log-warning-minimum-level' and `display-warning-minimum-level'.") | |
| 4581 | |
| 4582 (defcustom display-warning-suppressed-classes nil | |
| 4583 "List of classes of warnings that shouldn't be displayed. | |
| 4584 If any of the CLASS symbols associated with a warning is the same as | |
| 4585 any of the symbols listed here, the warning will not be displayed. | |
| 4586 The warning will still logged in the *Warnings* buffer (unless also | |
| 4587 contained in `log-warning-suppressed-classes'), but the buffer will | |
| 4588 not be automatically popped up. | |
| 4589 | |
| 4590 See also `log-warning-minimum-level' and `display-warning-minimum-level'." | |
| 4591 :type '(repeat symbol) | |
| 4592 :group 'warnings) | |
| 4593 | |
| 4594 (defvar warning-count 0 | |
| 4595 "Count of the number of warning messages displayed so far.") | |
| 4596 | |
| 4597 (defconst warning-level-alist '((emergency . 8) | |
| 793 | 4598 (critical . 7) |
| 4599 (error . 6) | |
| 4600 (warning . 5) | |
| 4601 (alert . 4) | |
| 428 | 4602 (notice . 3) |
| 4603 (info . 2) | |
| 4604 (debug . 1))) | |
| 4605 | |
| 4606 (defun warning-level-p (level) | |
| 4607 "Non-nil if LEVEL specifies a warning level." | |
| 4608 (and (symbolp level) (assq level warning-level-alist))) | |
| 4609 | |
| 793 | 4610 (defun warning-level-< (level1 level2) |
| 4611 "Non-nil if warning level LEVEL1 is lower than LEVEL2." | |
| 4612 (check-argument-type 'warning-level-p level1) | |
| 4613 (check-argument-type 'warning-level-p level2) | |
| 4614 (< (cdr (assq level1 warning-level-alist)) | |
| 4615 (cdr (assq level2 warning-level-alist)))) | |
| 4616 | |
| 428 | 4617 ;; If you're interested in rewriting this function, be aware that it |
| 4618 ;; could be called at arbitrary points in a Lisp program (when a | |
| 4619 ;; built-in function wants to issue a warning, it will call out to | |
| 4620 ;; this function the next time some Lisp code is evaluated). Therefore, | |
| 4621 ;; this function *must* not permanently modify any global variables | |
| 4622 ;; (e.g. the current buffer) except those that specifically apply | |
| 4623 ;; to the warning system. | |
| 4624 | |
| 4625 (defvar before-init-deferred-warnings nil) | |
| 4626 | |
| 4627 (defun after-init-display-warnings () | |
| 4628 "Display warnings deferred till after the init file is run. | |
| 4629 Warnings that occur before then are deferred so that warning | |
| 4630 suppression in the .emacs file will be honored." | |
| 4631 (while before-init-deferred-warnings | |
| 4632 (apply 'display-warning (car before-init-deferred-warnings)) | |
| 4633 (setq before-init-deferred-warnings | |
| 4634 (cdr before-init-deferred-warnings)))) | |
| 4635 | |
| 4636 (add-hook 'after-init-hook 'after-init-display-warnings) | |
| 4637 | |
| 4638 (defun display-warning (class message &optional level) | |
| 4639 "Display a warning message. | |
| 793 | 4640 |
| 4641 \[This is the most basic entry point for displaying a warning. In practice, | |
| 4642 `lwarn' or `warn' are probably more convenient for most usages.] | |
| 4643 | |
| 4644 CLASS should be a symbol describing what sort of warning this is, such as | |
| 4645 `resource' or `key-mapping' -- this refers, more or less, to the module in | |
| 4646 which the warning is generated and serves to group warnings together with | |
| 4647 similar semantics. A list of such symbols is also accepted. | |
| 4648 | |
| 4649 Optional argument LEVEL can be used to specify a priority for the warning, | |
| 4650 other than default priority `warning'. The currently defined levels are, | |
| 4651 from highest to lowest: | |
| 4652 | |
| 4653 Level Meaning | |
| 4654 ----------------------------------------------------------------------------- | |
| 4655 emergency A fatal or near-fatal error. XEmacs is likely to crash. | |
| 4656 | |
| 4657 critical A serious, nonrecoverable problem has occurred -- e.g., the | |
| 4658 loss of a major subsystem, such as the crash of the X server | |
| 4659 when XEmacs is connected to the server. | |
| 4660 | |
| 4661 error A warning about a problematic condition that should be fixed, | |
| 4662 and XEmacs cannot work around it -- it causes a failure of an | |
| 4663 operation. (In most circumstances, consider just signalling | |
| 4664 an error). However, there is no permanent damage and the | |
| 4665 situation is ultimately recoverable. | |
| 4666 | |
| 4667 warning A warning about a problematic condition that should be fixed, | |
| 4668 but XEmacs can work around it. | |
| 4669 | |
| 4670 \[By default, warnings above here, as well as being logged, cause the | |
| 4671 *Warnings* buffer to be forcibly displayed, so that the warning (and | |
| 4672 previous warnings, since often a whole series of warnings are issued at | |
| 4673 once) can be examined in detail. Also, the annoying presence of the | |
| 4674 *Warnings* buffer will encourage people to go out and fix the | |
| 4675 problem. Warnings below here are displayed in the minibuffer as well as | |
| 4676 logged in the *Warnings* buffer. but the *Warnings* buffer will not be | |
| 4677 forcibly shown, as these represent conditions the user is not expected to | |
| 4678 fix.] | |
| 4679 | |
| 4680 alert A warning about a problematic condition that can't easily be | |
| 4681 fixed (often having to do with the external environment), and | |
| 4682 causes a failure. We don't force the *Warnings* buffer to be | |
| 4683 displayed because the purpose of doing that is to force the | |
| 4684 user to fix the problem so that the buffer no longer appears. | |
| 4685 When the problem is outside the user's control, forcing the | |
| 4686 buffer is pointless and annoying. | |
| 4687 | |
| 4688 notice A warning about a problematic condition that can't easily be | |
| 4689 fixed (often having to do with the external environment), | |
| 4690 but XEmacs can work around it. | |
| 4691 | |
| 4692 info Random info about something new or unexpected that was noticed; | |
| 4693 does not generally indicate a problem. | |
| 4694 | |
| 4695 \[By default, warnings below here are ignored entirely. All warnings above | |
| 4696 here are logged in the *Warnings* buffer.] | |
| 4697 | |
| 4698 debug A debugging notice; normally, not seen at all. | |
| 4699 | |
| 4700 NOTE: `specifier-instance' outputs warnings at level `debug' when errors occur | |
| 4701 in the process of trying to instantiate a particular instantiator. If you | |
| 4702 want to see these, change `log-warning-minimum-level'. | |
| 4703 | |
| 4704 There are two sets of variables. One controls the lower level (see the | |
| 4705 above diagram) -- i.e. ignored entirely. One controls the upper level -- | |
| 4706 whether the *Warnings* buffer is forcibly displayed. In particular: | |
| 4707 | |
| 4708 `display-warning-minimum-level' sets the upper level (see above), and | |
| 4709 `log-warning-minimum-level' the lower level. | |
| 4710 | |
| 4711 Individual classes can be suppressed. `log-warning-suppressed-classes' | |
| 4712 specifies a list of classes where warnings on those classes will be treated | |
| 4713 as if their level is below `log-warning-minimum-level' (i.e. they will be | |
| 4714 ignored completely), regardless of their actual level. Similarly, | |
| 4715 `display-warning-suppressed-classes' specifies a list of classes where | |
| 4716 warnings on those classes will be treated as if their level is below | |
| 4717 `display-warning-minimum-level', but above `log-warning-minimum-level' so | |
| 4718 long as they're not listed in that variable as well." | |
| 428 | 4719 (or level (setq level 'warning)) |
| 4720 (or (listp class) (setq class (list class))) | |
| 4721 (check-argument-type 'warning-level-p level) | |
|
5228
5efbd1253905
Remove all support for InfoDock.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4957
diff
changeset
|
4722 (if (not init-file-loaded) |
| 428 | 4723 (push (list class message level) before-init-deferred-warnings) |
| 4724 (catch 'ignored | |
| 4725 (let ((display-p t) | |
| 4726 (level-num (cdr (assq level warning-level-alist)))) | |
| 4727 (if (< level-num (cdr (assq log-warning-minimum-level | |
| 4728 warning-level-alist))) | |
| 4729 (throw 'ignored nil)) | |
| 4730 (if (intersection class log-warning-suppressed-classes) | |
| 4731 (throw 'ignored nil)) | |
| 4732 | |
| 4733 (if (< level-num (cdr (assq display-warning-minimum-level | |
| 4734 warning-level-alist))) | |
| 4735 (setq display-p nil)) | |
| 4736 (if (and display-p | |
| 4737 (intersection class display-warning-suppressed-classes)) | |
| 4738 (setq display-p nil)) | |
| 4739 (let ((buffer (get-buffer-create "*Warnings*"))) | |
| 4740 (when display-p | |
| 4741 ;; The C code looks at display-warning-tick to determine | |
| 4742 ;; when it should call `display-warning-buffer'. Change it | |
| 4743 ;; to get the C code's attention. | |
| 4744 (incf display-warning-tick)) | |
| 4745 (with-current-buffer buffer | |
| 4746 (goto-char (point-max)) | |
| 4747 (incf warning-count) | |
| 793 | 4748 (let ((start (point))) |
| 4749 (princ (format "(%d) (%s/%s) " | |
| 4750 warning-count | |
| 4751 (mapconcat 'symbol-name class ",") | |
| 4752 level) | |
| 4753 buffer) | |
| 4754 (princ message buffer) | |
| 4755 (terpri buffer) | |
| 4756 (terpri buffer) | |
| 4757 (let ((ex (make-extent start (point)))) | |
| 4758 (set-extent-properties ex | |
| 4759 `(warning t warning-count ,warning-count | |
| 4760 warning-class ,class | |
| 4761 warning-level ,level))))) | |
| 4762 (message "%s: %s" (capitalize (symbol-name level)) message)))))) | |
| 428 | 4763 |
| 4764 (defun warn (&rest args) | |
| 793 | 4765 "Display a formatted warning message at default class and level. |
| 428 | 4766 The message is constructed by passing all args to `format'. The message |
| 4767 is placed in the *Warnings* buffer, which will be popped up at the next | |
| 793 | 4768 redisplay. The class of the warning is `general'; the level is `warning'. |
| 4769 | |
| 4770 See `display-warning' for more info." | |
| 4771 (display-warning 'default (apply 'format args))) | |
| 428 | 4772 |
| 4773 (defun lwarn (class level &rest args) | |
| 793 | 4774 "Display a formatted warning message at specified class and level. |
| 4775 The message is constructed by passing all args to `format'. The message | |
| 4776 is placed in the *Warnings* buffer, which will be popped up at the next | |
| 4777 redisplay. | |
| 4778 | |
| 4779 See `display-warning' for more info." | |
| 428 | 4780 (display-warning class (apply 'format args) |
| 4781 (or level 'warning))) | |
| 4782 | |
| 4783 (defvar warning-marker nil) | |
| 4784 | |
| 4785 ;; When this function is called by the C code, all non-local exits are | |
| 4786 ;; trapped and C-g is inhibited; therefore, it would be a very, very | |
| 4787 ;; bad idea for this function to get into an infinite loop. | |
| 4788 | |
| 4789 (defun display-warning-buffer () | |
| 4790 "Make the buffer that contains the warnings be visible. | |
| 4791 The C code calls this periodically, right before redisplay." | |
| 4792 (let ((buffer (get-buffer-create "*Warnings*"))) | |
| 4793 (when (or (not warning-marker) | |
| 4794 (not (eq (marker-buffer warning-marker) buffer))) | |
| 4795 (setq warning-marker (make-marker)) | |
| 4796 (set-marker warning-marker 1 buffer)) | |
| 4797 (if temp-buffer-show-function | |
| 442 | 4798 (progn |
| 4799 (funcall temp-buffer-show-function buffer) | |
| 4800 (mapc #'(lambda (win) (set-window-start win warning-marker)) | |
| 4801 (windows-of-buffer buffer nil t))) | |
| 428 | 4802 (set-window-start (display-buffer buffer) warning-marker)) |
| 4803 (set-marker warning-marker (point-max buffer) buffer))) | |
| 4804 | |
| 442 | 4805 |
| 4806 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
| 4807 ;; misc junk ;; | |
| 4808 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
| 4809 | |
| 428 | 4810 (defun emacs-name () |
| 4811 "Return the printable name of this instance of Emacs." | |
|
5228
5efbd1253905
Remove all support for InfoDock.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4957
diff
changeset
|
4812 (cond ((featurep 'xemacs) "XEmacs") |
| 428 | 4813 (t "Emacs"))) |
| 4814 | |
|
5655
b7ae5f44b950
Remove some redundant functions, change others to labels, lisp/
Aidan Kehoe <kehoea@parhasard.net>
parents:
5652
diff
changeset
|
4815 (defun debug-print (&rest args) |
|
b7ae5f44b950
Remove some redundant functions, change others to labels, lisp/
Aidan Kehoe <kehoea@parhasard.net>
parents:
5652
diff
changeset
|
4816 "Send a string to the debugging output. |
| 793 | 4817 If the first argument is a string, it is considered to be a format |
| 4818 specifier if there are sufficient numbers of other args, and the string is | |
| 4819 formatted using (apply #'format args). Otherwise, each argument is printed | |
| 4820 individually in a numbered list." | |
| 4821 (let ((standard-output 'external-debugging-output) | |
| 4822 (fmt (condition-case nil | |
| 4823 (and (stringp (first args)) | |
| 4824 (apply #'format args)) | |
| 4825 (error nil)))) | |
| 4826 (if fmt | |
| 4827 (progn | |
| 3064 | 4828 (princ (apply #'format args)) |
| 793 | 4829 (terpri)) |
| 4830 (princ "--> ") | |
| 4831 (let ((i 1)) | |
| 4832 (dolist (sgra args) | |
| 4833 (if (> i 1) (princ " ")) | |
| 4834 (princ (format "%d. " i)) | |
| 4835 (prin1 sgra) | |
| 4836 (incf i)) | |
| 4837 (terpri))))) | |
| 4838 | |
| 4839 (defun debug-backtrace () | |
| 4840 "Send a backtrace to the debugging output." | |
| 4841 (let ((standard-output 'external-debugging-output)) | |
| 4842 (backtrace nil t) | |
| 4843 (terpri))) | |
| 444 | 4844 |
| 428 | 4845 ;;; simple.el ends here |