Mercurial > hg > xemacs-beta
annotate lisp/simple.el @ 4885:6772ce4d982b
Fix hash tables, #'member*, #'assoc*, #'eql compiler macros if bignums
lisp/ChangeLog addition:
2010-01-24 Aidan Kehoe <kehoea@parhasard.net>
Correct the semantics of #'member*, #'eql, #'assoc* in the
presence of bignums; change the integerp byte code to fixnump
semantics.
* bytecomp.el (fixnump, integerp, byte-compile-integerp):
Change the integerp byte code to fixnump; add a byte-compile
method to integerp using fixnump and numberp and avoiding a
funcall most of the time, since in the non-core contexts where
integerp is used, it's mostly distinguishing between fixnums and
things that are not numbers at all.
* byte-optimize.el (side-effect-free-fns, byte-after-unbind-ops)
(byte-compile-side-effect-and-error-free-ops):
Replace the integerp bytecode with fixnump; add fixnump to the
side-effect-free-fns. Add the other extended number type
predicates to the list in passing.
* obsolete.el (floatp-safe): Mark this as obsolete.
* cl.el (eql): Go into more detail in the docstring here. Don't
bother checking whether both arguments are numbers; one is enough,
#'equal will fail correctly if they have distinct types.
(subst): Replace a call to #'integerp (deciding whether to use
#'memq or not) with one to #'fixnump.
Delete most-positive-fixnum, most-negative-fixnum from this file;
they're now always in C, so they can't be modified from Lisp.
* cl-seq.el (member*, assoc*, rassoc*):
Correct these functions in the presence of bignums.
* cl-macs.el (cl-make-type-test): The type test for a fixnum is
now fixnump. Ditch floatp-safe, use floatp instead.
(eql): Correct this compiler macro in the presence of bignums.
(assoc*): Correct this compiler macro in the presence of bignums.
* simple.el (undo):
Change #'integerp to #'fixnump here, since we use #'delq with the
same value as ELT a few lines down.
src/ChangeLog addition:
2010-01-24 Aidan Kehoe <kehoea@parhasard.net>
Fix problems with #'eql, extended number types, and the hash table
implementation; change the Bintegerp bytecode to fixnump semantics
even on bignum builds, since #'integerp can have a fast
implementation in terms of #'fixnump for most of its extant uses,
but not vice-versa.
* lisp.h: Always #include number.h; we want the macros provided in
it, even if the various number types are not available.
* number.h (NON_FIXNUM_NUMBER_P): New macro, giving 1 when its
argument is of non-immediate number type. Equivalent to FLOATP if
WITH_NUMBER_TYPES is not defined.
* elhash.c (lisp_object_eql_equal, lisp_object_eql_hash):
Use NON_FIXNUM_NUMBER_P in these functions, instead of FLOATP,
giving more correct behaviour in the presence of the extended
number types.
* bytecode.c (Bfixnump, execute_optimized_program):
Rename Bintegerp to Bfixnump; change its semantics to reflect the
new name on builds with bignum support.
* data.c (Ffixnump, Fintegerp, syms_of_data, vars_of_data):
Always make #'fixnump available, even on non-BIGNUM builds;
always implement #'integerp in this file, even on BIGNUM builds.
Move most-positive-fixnum, most-negative-fixnum here from
number.c, so they are Lisp constants even on builds without number
types, and attempts to change or bind them error.
Use the NUMBERP and INTEGERP macros even on builds without
extended number types.
* data.c (fixnum_char_or_marker_to_int):
Rename this function from integer_char_or_marker_to_int, to better
reflect the arguments it accepts.
* number.c (Fevenp, Foddp, syms_of_number):
Never provide #'integerp in this file. Remove #'oddp,
#'evenp; their implementations are overridden by those in cl.el.
* number.c (vars_of_number):
most-positive-fixnum, most-negative-fixnum are no longer here.
man/ChangeLog addition:
2010-01-23 Aidan Kehoe <kehoea@parhasard.net>
Generally: be careful to say fixnum, not integer, when talking
about fixed-precision integral types. I'm sure I've missed
instances, both here and in the docstrings, but this is a decent
start.
* lispref/text.texi (Columns):
Document where only fixnums, not integers generally, are accepted.
(Registers):
Remove some ancient char-int confoundance here.
* lispref/strings.texi (Creating Strings, Creating Strings):
Be more exact in describing where fixnums but not integers in
general are accepted.
(Creating Strings): Use a more contemporary example to illustrate
how concat deals with lists including integers about #xFF. Delete
some obsolete documentation on same.
(Char Table Types): Document that only fixnums are accepted as
values in syntax tables.
* lispref/searching.texi (String Search, Search and Replace):
Be exact in describing where fixnums but not integers in general
are accepted.
* lispref/range-tables.texi (Range Tables): Be exact in describing
them; only fixnums are accepted to describe ranges.
* lispref/os.texi (Killing XEmacs, User Identification)
(Time of Day, Time Conversion):
Be more exact about using fixnum where only fixed-precision
integers are accepted.
* lispref/objects.texi (Integer Type): Be more exact (and
up-to-date) about the possible values for
integers. Cross-reference to documentation of the bignum extension.
(Equality Predicates):
(Range Table Type):
(Array Type): Use fixnum, not integer, to describe a
fixed-precision integer.
(Syntax Table Type): Correct some English syntax here.
* lispref/numbers.texi (Numbers): Change the phrasing here to use
fixnum to mean the fixed-precision integers normal in emacs.
Document that our terminology deviates from that of Common Lisp,
and that we're working on it.
(Compatibility Issues): Reiterate the Common Lisp versus Emacs
Lisp compatibility issues.
(Comparison of Numbers, Arithmetic Operations):
* lispref/commands.texi (Command Loop Info, Working With Events):
* lispref/buffers.texi (Modification Time):
Be more exact in describing where fixnums but not integers in
general are accepted.
| author | Aidan Kehoe <kehoea@parhasard.net> |
|---|---|
| date | Sun, 24 Jan 2010 15:21:27 +0000 |
| parents | e533a9912ef1 |
| children | db2db229ee82 |
| 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 | |
| 12 ;; XEmacs is free software; you can redistribute it and/or modify it | |
| 13 ;; under the terms of the GNU General Public License as published by | |
| 14 ;; the Free Software Foundation; either version 2, or (at your option) | |
| 15 ;; any later version. | |
| 16 | |
| 17 ;; XEmacs is distributed in the hope that it will be useful, but | |
| 18 ;; WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 19 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 20 ;; General Public License for more details. | |
| 21 | |
| 22 ;; You should have received a copy of the GNU General Public License | |
| 23 ;; along with XEmacs; see the file COPYING. If not, write to the Free | |
| 3000 | 24 ;; Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| 25 ;; Boston, MA 02110-1301, USA. | |
| 428 | 26 |
| 27 ;;; Synched up with: FSF 19.34 [But not very closely]. | |
| 3000 | 28 ;;; Occasional synching to FSF 21.2 and FSF 22.0, as marked. Comment stuff |
| 29 ;;; also synched, and in newcomment.el. | |
| 428 | 30 |
| 31 ;;; Commentary: | |
| 32 | |
| 33 ;; This file is dumped with XEmacs. | |
| 34 | |
| 35 ;; A grab-bag of basic XEmacs commands not specifically related to some | |
| 36 ;; major mode or to file-handling. | |
| 37 | |
| 38 ;; Changes for zmacs-style active-regions: | |
| 39 ;; | |
| 40 ;; beginning-of-buffer, end-of-buffer, count-lines-region, | |
| 41 ;; count-lines-buffer, what-line, what-cursor-position, set-goal-column, | |
| 42 ;; set-fill-column, prefix-arg-internal, and line-move (which is used by | |
| 43 ;; next-line and previous-line) set zmacs-region-stays to t, so that they | |
| 44 ;; don't affect the current region-hilighting state. | |
| 45 ;; | |
| 46 ;; mark-whole-buffer, mark-word, exchange-point-and-mark, and | |
| 47 ;; set-mark-command (without an argument) call zmacs-activate-region. | |
| 48 ;; | |
| 49 ;; mark takes an optional arg like the new Fmark_marker() does. When | |
| 50 ;; the region is not active, mark returns nil unless the optional arg is true. | |
| 51 ;; | |
| 52 ;; push-mark, pop-mark, exchange-point-and-mark, and set-marker, and | |
| 53 ;; set-mark-command use (mark t) so that they can access the mark whether | |
| 54 ;; the region is active or not. | |
| 55 ;; | |
| 56 ;; shell-command, shell-command-on-region, yank, and yank-pop (which all | |
| 57 ;; push a mark) have been altered to call exchange-point-and-mark with an | |
| 58 ;; argument, meaning "don't activate the region". These commands only use | |
| 59 ;; exchange-point-and-mark to position the newly-pushed mark correctly, so | |
| 60 ;; this isn't a user-visible change. These functions have also been altered | |
| 61 ;; to use (mark t) for the same reason. | |
| 62 | |
| 502 | 63 ;; 97/3/14 Jareth Hein (jhod@po.iijnet.or.jp) added kinsoku processing |
| 64 ;; (support for filling of Asian text) into the fill code. This was | |
| 65 ;; ripped bleeding from Mule-2.3, and could probably use some feature | |
| 66 ;; additions (like additional wrap styles, etc) | |
| 428 | 67 |
| 68 ;; 97/06/11 Steve Baur (steve@xemacs.org) Convert use of | |
| 69 ;; (preceding|following)-char to char-(after|before). | |
| 70 | |
| 71 ;;; Code: | |
| 72 | |
| 73 (defgroup editing-basics nil | |
| 74 "Most basic editing variables." | |
| 75 :group 'editing) | |
| 76 | |
| 77 (defgroup killing nil | |
| 78 "Killing and yanking commands." | |
| 79 :group 'editing) | |
| 80 | |
| 81 (defgroup fill-comments nil | |
| 82 "Indenting and filling of comments." | |
| 83 :prefix "comment-" | |
| 84 :group 'fill) | |
| 85 | |
| 86 (defgroup paren-matching nil | |
| 87 "Highlight (un)matching of parens and expressions." | |
| 88 :prefix "paren-" | |
| 89 :group 'matching) | |
| 90 | |
| 91 (defgroup log-message nil | |
| 92 "Messages logging and display customizations." | |
| 93 :group 'minibuffer) | |
| 94 | |
| 95 (defgroup warnings nil | |
| 96 "Warnings customizations." | |
| 97 :group 'minibuffer) | |
| 98 | |
| 99 | |
| 100 (defcustom search-caps-disable-folding t | |
| 101 "*If non-nil, upper case chars disable case fold searching. | |
| 102 This does not apply to \"yanked\" strings." | |
| 103 :type 'boolean | |
| 104 :group 'editing-basics) | |
| 105 | |
| 106 ;; This is stolen (and slightly modified) from FSF emacs's | |
| 107 ;; `isearch-no-upper-case-p'. | |
| 108 (defun no-upper-case-p (string &optional regexp-flag) | |
| 109 "Return t if there are no upper case chars in STRING. | |
| 110 If REGEXP-FLAG is non-nil, disregard letters preceded by `\\' (but not `\\\\') | |
| 111 since they have special meaning in a regexp." | |
| 112 (let ((case-fold-search nil)) | |
| 444 | 113 (not (string-match (if regexp-flag |
| 428 | 114 "\\(^\\|\\\\\\\\\\|[^\\]\\)[A-Z]" |
| 115 "[A-Z]") | |
| 116 string)) | |
| 117 )) | |
| 118 | |
| 119 (defmacro with-search-caps-disable-folding (string regexp-flag &rest body) "\ | |
| 444 | 120 Eval BODY with `case-fold-search' let to nil if `search-caps-disable-folding' |
| 428 | 121 is non-nil, and if STRING (either a string or a regular expression according |
| 122 to REGEXP-FLAG) contains uppercase letters." | |
| 123 `(let ((case-fold-search | |
| 124 (if (and case-fold-search search-caps-disable-folding) | |
| 125 (no-upper-case-p ,string ,regexp-flag) | |
| 126 case-fold-search))) | |
| 127 ,@body)) | |
| 128 (put 'with-search-caps-disable-folding 'lisp-indent-function 2) | |
| 444 | 129 (put 'with-search-caps-disable-folding 'edebug-form-spec |
| 428 | 130 '(sexp sexp &rest form)) |
| 131 | |
| 444 | 132 (defmacro with-interactive-search-caps-disable-folding (string regexp-flag |
| 428 | 133 &rest body) |
| 134 "Same as `with-search-caps-disable-folding', but only in the case of a | |
| 135 function called interactively." | |
| 136 `(let ((case-fold-search | |
| 444 | 137 (if (and (interactive-p) |
| 428 | 138 case-fold-search search-caps-disable-folding) |
| 139 (no-upper-case-p ,string ,regexp-flag) | |
| 140 case-fold-search))) | |
| 141 ,@body)) | |
| 142 (put 'with-interactive-search-caps-disable-folding 'lisp-indent-function 2) | |
| 444 | 143 (put 'with-interactive-search-caps-disable-folding 'edebug-form-spec |
| 428 | 144 '(sexp sexp &rest form)) |
| 145 | |
| 444 | 146 (defun newline (&optional n) |
| 428 | 147 "Insert a newline, and move to left margin of the new line if it's blank. |
| 148 The newline is marked with the text-property `hard'. | |
| 444 | 149 With optional arg N, insert that many newlines. |
| 428 | 150 In Auto Fill mode, if no numeric arg, break the preceding line if it's long." |
| 151 (interactive "*P") | |
| 152 (barf-if-buffer-read-only nil (point)) | |
| 153 ;; Inserting a newline at the end of a line produces better redisplay in | |
| 154 ;; try_window_id than inserting at the beginning of a line, and the textual | |
| 155 ;; result is the same. So, if we're at beginning of line, pretend to be at | |
| 156 ;; the end of the previous line. | |
| 157 ;; #### Does this have any relevance in XEmacs? | |
| 158 (let ((flag (and (not (bobp)) | |
| 159 (bolp) | |
| 160 ;; Make sure the newline before point isn't intangible. | |
| 161 (not (get-char-property (1- (point)) 'intangible)) | |
| 162 ;; Make sure the newline before point isn't read-only. | |
| 163 (not (get-char-property (1- (point)) 'read-only)) | |
| 164 ;; Make sure the newline before point isn't invisible. | |
| 165 (not (get-char-property (1- (point)) 'invisible)) | |
| 166 ;; This should probably also test for the previous char | |
| 167 ;; being the *last* character too. | |
| 168 (not (get-char-property (1- (point)) 'end-open)) | |
| 169 ;; Make sure the newline before point has the same | |
| 170 ;; properties as the char before it (if any). | |
| 171 (< (or (previous-extent-change (point)) -2) | |
| 172 (- (point) 2)))) | |
| 173 (was-page-start (and (bolp) | |
| 174 (looking-at page-delimiter))) | |
| 175 (beforepos (point))) | |
| 176 (if flag (backward-char 1)) | |
| 177 ;; Call self-insert so that auto-fill, abbrev expansion etc. happens. | |
| 178 ;; Set last-command-char to tell self-insert what to insert. | |
| 179 (let ((last-command-char ?\n) | |
| 180 ;; Don't auto-fill if we have a numeric argument. | |
| 181 ;; Also not if flag is true (it would fill wrong line); | |
| 182 ;; there is no need to since we're at BOL. | |
| 444 | 183 (auto-fill-function (if (or n flag) nil auto-fill-function))) |
| 428 | 184 (unwind-protect |
| 444 | 185 (self-insert-command (prefix-numeric-value n)) |
| 428 | 186 ;; If we get an error in self-insert-command, put point at right place. |
| 187 (if flag (forward-char 1)))) | |
| 188 ;; If we did *not* get an error, cancel that forward-char. | |
| 189 (if flag (backward-char 1)) | |
| 190 ;; Mark the newline(s) `hard'. | |
| 191 (if use-hard-newlines | |
| 444 | 192 (let* ((from (- (point) (if n (prefix-numeric-value n) 1))) |
| 428 | 193 (sticky (get-text-property from 'end-open))) ; XEmacs |
| 194 (put-text-property from (point) 'hard 't) | |
| 195 ;; If end-open is not "t", add 'hard to end-open list | |
| 196 (if (and (listp sticky) (not (memq 'hard sticky))) | |
| 197 (put-text-property from (point) 'end-open ; XEmacs | |
| 198 (cons 'hard sticky))))) | |
| 199 ;; If the newline leaves the previous line blank, | |
| 200 ;; and we have a left margin, delete that from the blank line. | |
| 201 (or flag | |
| 202 (save-excursion | |
| 203 (goto-char beforepos) | |
| 204 (beginning-of-line) | |
| 205 (and (looking-at "[ \t]$") | |
| 206 (> (current-left-margin) 0) | |
| 207 (delete-region (point) (progn (end-of-line) (point)))))) | |
| 208 (if flag (forward-char 1)) | |
| 209 ;; Indent the line after the newline, except in one case: | |
| 210 ;; when we added the newline at the beginning of a line | |
| 211 ;; which starts a page. | |
| 212 (or was-page-start | |
| 213 (move-to-left-margin nil t))) | |
| 214 nil) | |
| 215 | |
| 216 (defun set-hard-newline-properties (from to) | |
| 217 (let ((sticky (get-text-property from 'rear-nonsticky))) | |
| 218 (put-text-property from to 'hard 't) | |
| 219 ;; If rear-nonsticky is not "t", add 'hard to rear-nonsticky list | |
| 220 (if (and (listp sticky) (not (memq 'hard sticky))) | |
| 221 (put-text-property from (point) 'rear-nonsticky | |
| 222 (cons 'hard sticky))))) | |
| 223 | |
| 444 | 224 (defun open-line (n) |
| 428 | 225 "Insert a newline and leave point before it. |
| 226 If there is a fill prefix and/or a left-margin, insert them on the new line | |
| 227 if the line would have been blank. | |
| 228 With arg N, insert N newlines." | |
| 229 (interactive "*p") | |
| 230 (let* ((do-fill-prefix (and fill-prefix (bolp))) | |
| 231 (do-left-margin (and (bolp) (> (current-left-margin) 0))) | |
| 232 (loc (point))) | |
| 444 | 233 (newline n) |
| 428 | 234 (goto-char loc) |
| 444 | 235 (while (> n 0) |
| 428 | 236 (cond ((bolp) |
| 237 (if do-left-margin (indent-to (current-left-margin))) | |
| 238 (if do-fill-prefix (insert fill-prefix)))) | |
| 239 (forward-line 1) | |
| 444 | 240 (setq n (1- n))) |
| 428 | 241 (goto-char loc) |
| 242 (end-of-line))) | |
| 243 | |
| 244 (defun split-line () | |
| 245 "Split current line, moving portion beyond point vertically down." | |
| 246 (interactive "*") | |
| 247 (skip-chars-forward " \t") | |
| 248 (let ((col (current-column)) | |
| 249 (pos (point))) | |
| 250 (newline 1) | |
| 251 (indent-to col 0) | |
| 252 (goto-char pos))) | |
| 253 | |
| 254 (defun quoted-insert (arg) | |
| 255 "Read next input character and insert it. | |
| 256 This is useful for inserting control characters. | |
| 257 You may also type up to 3 octal digits, to insert a character with that code. | |
| 258 | |
| 259 In overwrite mode, this function inserts the character anyway, and | |
| 260 does not handle octal digits specially. This means that if you use | |
| 261 overwrite as your normal editing mode, you can use this function to | |
| 262 insert characters when necessary. | |
| 263 | |
| 264 In binary overwrite mode, this function does overwrite, and octal | |
| 265 digits are interpreted as a character code. This is supposed to make | |
| 266 this function useful in editing binary files." | |
| 267 (interactive "*p") | |
| 268 (let ((char (if (or (not overwrite-mode) | |
| 269 (eq overwrite-mode 'overwrite-mode-binary)) | |
| 270 (read-quoted-char) | |
| 271 ;; read-char obeys C-g, so we should protect. FSF | |
| 272 ;; doesn't have the protection here, but it's a bug in | |
| 273 ;; FSF. | |
| 274 (let ((inhibit-quit t)) | |
| 275 (read-char))))) | |
| 276 (if (> arg 0) | |
| 277 (if (eq overwrite-mode 'overwrite-mode-binary) | |
| 278 (delete-char arg))) | |
| 279 (while (> arg 0) | |
| 280 (insert char) | |
| 281 (setq arg (1- arg))))) | |
| 282 | |
| 283 (defun delete-indentation (&optional arg) | |
| 284 "Join this line to previous and fix up whitespace at join. | |
| 285 If there is a fill prefix, delete it from the beginning of this line. | |
| 286 With argument, join this line to following line." | |
| 287 (interactive "*P") | |
| 288 (beginning-of-line) | |
| 289 (if arg (forward-line 1)) | |
| 290 (if (eq (char-before (point)) ?\n) | |
| 291 (progn | |
| 292 (delete-region (point) (1- (point))) | |
| 293 ;; If the second line started with the fill prefix, | |
| 294 ;; delete the prefix. | |
| 295 (if (and fill-prefix | |
| 296 (<= (+ (point) (length fill-prefix)) (point-max)) | |
| 297 (string= fill-prefix | |
| 298 (buffer-substring (point) | |
| 299 (+ (point) (length fill-prefix))))) | |
| 300 (delete-region (point) (+ (point) (length fill-prefix)))) | |
| 301 (fixup-whitespace)))) | |
| 302 | |
| 958 | 303 (defalias 'join-line 'delete-indentation) |
| 304 | |
| 428 | 305 (defun fixup-whitespace () |
| 306 "Fixup white space between objects around point. | |
| 307 Leave one space or none, according to the context." | |
| 308 (interactive "*") | |
| 309 (save-excursion | |
| 310 (delete-horizontal-space) | |
| 311 (if (or (looking-at "^\\|\\s)") | |
| 446 | 312 (save-excursion (backward-char 1) |
| 428 | 313 (looking-at "$\\|\\s(\\|\\s'"))) |
| 314 nil | |
| 315 (insert ?\ )))) | |
| 316 | |
| 317 (defun delete-horizontal-space () | |
| 318 "Delete all spaces and tabs around point." | |
| 319 (interactive "*") | |
| 320 (skip-chars-backward " \t") | |
| 321 (delete-region (point) (progn (skip-chars-forward " \t") (point)))) | |
| 322 | |
| 323 (defun just-one-space () | |
| 324 "Delete all spaces and tabs around point, leaving one space." | |
| 325 (interactive "*") | |
| 326 (if abbrev-mode ; XEmacs | |
| 327 (expand-abbrev)) | |
| 328 (skip-chars-backward " \t") | |
| 329 (if (eq (char-after (point)) ? ) ; XEmacs | |
| 330 (forward-char 1) | |
| 331 (insert ? )) | |
| 332 (delete-region (point) (progn (skip-chars-forward " \t") (point)))) | |
| 333 | |
| 334 (defun delete-blank-lines () | |
| 335 "On blank line, delete all surrounding blank lines, leaving just one. | |
| 336 On isolated blank line, delete that one. | |
| 337 On nonblank line, delete any immediately following blank lines." | |
| 338 (interactive "*") | |
| 339 (let (thisblank singleblank) | |
| 340 (save-excursion | |
| 341 (beginning-of-line) | |
| 342 (setq thisblank (looking-at "[ \t]*$")) | |
| 343 ;; Set singleblank if there is just one blank line here. | |
| 344 (setq singleblank | |
| 345 (and thisblank | |
| 346 (not (looking-at "[ \t]*\n[ \t]*$")) | |
| 347 (or (bobp) | |
| 348 (progn (forward-line -1) | |
| 349 (not (looking-at "[ \t]*$"))))))) | |
| 350 ;; Delete preceding blank lines, and this one too if it's the only one. | |
| 351 (if thisblank | |
| 352 (progn | |
| 353 (beginning-of-line) | |
| 354 (if singleblank (forward-line 1)) | |
| 355 (delete-region (point) | |
| 356 (if (re-search-backward "[^ \t\n]" nil t) | |
| 357 (progn (forward-line 1) (point)) | |
| 358 (point-min))))) | |
| 359 ;; Delete following blank lines, unless the current line is blank | |
| 360 ;; and there are no following blank lines. | |
| 361 (if (not (and thisblank singleblank)) | |
| 362 (save-excursion | |
| 363 (end-of-line) | |
| 364 (forward-line 1) | |
| 365 (delete-region (point) | |
| 366 (if (re-search-forward "[^ \t\n]" nil t) | |
| 367 (progn (beginning-of-line) (point)) | |
| 368 (point-max))))) | |
| 369 ;; Handle the special case where point is followed by newline and eob. | |
| 370 ;; Delete the line, leaving point at eob. | |
| 371 (if (looking-at "^[ \t]*\n\\'") | |
| 372 (delete-region (point) (point-max))))) | |
| 373 | |
| 374 (defun back-to-indentation () | |
| 375 "Move point to the first non-whitespace character on this line." | |
| 376 ;; XEmacs change | |
| 377 (interactive "_") | |
| 378 (beginning-of-line 1) | |
| 379 (skip-chars-forward " \t")) | |
| 380 | |
| 381 (defun newline-and-indent () | |
| 382 "Insert a newline, then indent according to major mode. | |
| 383 Indentation is done using the value of `indent-line-function'. | |
| 384 In programming language modes, this is the same as TAB. | |
| 385 In some text modes, where TAB inserts a tab, this command indents to the | |
| 386 column specified by the function `current-left-margin'." | |
| 387 (interactive "*") | |
| 388 (delete-region (point) (progn (skip-chars-backward " \t") (point))) | |
| 389 (newline) | |
| 390 (indent-according-to-mode)) | |
| 391 | |
| 392 (defun reindent-then-newline-and-indent () | |
| 393 "Reindent current line, insert newline, then indent the new line. | |
| 394 Indentation of both lines is done according to the current major mode, | |
| 395 which means calling the current value of `indent-line-function'. | |
| 396 In programming language modes, this is the same as TAB. | |
| 397 In some text modes, where TAB inserts a tab, this indents to the | |
| 398 column specified by the function `current-left-margin'." | |
| 399 (interactive "*") | |
| 400 (save-excursion | |
| 401 (delete-region (point) (progn (skip-chars-backward " \t") (point))) | |
| 402 (indent-according-to-mode)) | |
| 403 (newline) | |
| 404 (indent-according-to-mode)) | |
| 405 | |
| 406 ;; Internal subroutine of delete-char | |
| 407 (defun kill-forward-chars (arg) | |
| 408 (if (listp arg) (setq arg (car arg))) | |
| 409 (if (eq arg '-) (setq arg -1)) | |
| 410 (kill-region (point) (+ (point) arg))) | |
| 411 | |
| 412 ;; Internal subroutine of backward-delete-char | |
| 413 (defun kill-backward-chars (arg) | |
| 414 (if (listp arg) (setq arg (car arg))) | |
| 415 (if (eq arg '-) (setq arg -1)) | |
| 416 (kill-region (point) (- (point) arg))) | |
| 417 | |
| 418 (defun backward-delete-char-untabify (arg &optional killp) | |
| 419 "Delete characters backward, changing tabs into spaces. | |
| 420 Delete ARG chars, and kill (save in kill ring) if KILLP is non-nil. | |
| 421 Interactively, ARG is the prefix arg (default 1) | |
| 422 and KILLP is t if a prefix arg was specified." | |
| 423 (interactive "*p\nP") | |
| 424 (let ((count arg)) | |
| 425 (save-excursion | |
| 426 (while (and (> count 0) (not (bobp))) | |
| 427 (if (eq (char-before (point)) ?\t) ; XEmacs | |
| 428 (let ((col (current-column))) | |
| 446 | 429 (backward-char 1) |
| 428 | 430 (setq col (- col (current-column))) |
| 431 (insert-char ?\ col) | |
| 432 (delete-char 1))) | |
| 446 | 433 (backward-char 1) |
| 428 | 434 (setq count (1- count))))) |
| 435 (delete-backward-char arg killp) | |
| 436 ;; XEmacs: In overwrite mode, back over columns while clearing them out, | |
| 437 ;; unless at end of line. | |
| 438 (and overwrite-mode (not (eolp)) | |
| 439 (save-excursion (insert-char ?\ arg)))) | |
| 440 | |
| 441 (defcustom delete-key-deletes-forward t | |
| 442 "*If non-nil, the DEL key will erase one character forwards. | |
| 443 If nil, the DEL key will erase one character backwards." | |
| 444 :type 'boolean | |
| 445 :group 'editing-basics) | |
| 446 | |
| 446 | 447 (defcustom backward-delete-function 'delete-backward-char |
| 428 | 448 "*Function called to delete backwards on a delete keypress. |
| 449 If `delete-key-deletes-forward' is nil, `backward-or-forward-delete-char' | |
| 450 calls this function to erase one character backwards. Default value | |
| 446 | 451 is `delete-backward-char', with `backward-delete-char-untabify' being a |
| 428 | 452 popular alternate setting." |
| 453 :type 'function | |
| 454 :group 'editing-basics) | |
| 455 | |
| 456 ;; Trash me, baby. | |
| 457 (defsubst delete-forward-p () | |
| 458 (and delete-key-deletes-forward | |
| 459 (or (not (eq (device-type) 'x)) | |
| 502 | 460 (declare-fboundp |
| 461 (x-keysym-on-keyboard-sans-modifiers-p 'backspace))))) | |
| 428 | 462 |
| 463 (defun backward-or-forward-delete-char (arg) | |
| 464 "Delete either one character backwards or one character forwards. | |
| 465 Controlled by the state of `delete-key-deletes-forward' and whether the | |
| 466 BackSpace keysym even exists on your keyboard. If you don't have a | |
| 467 BackSpace keysym, the delete key should always delete one character | |
| 468 backwards." | |
| 469 (interactive "*p") | |
| 470 (if (delete-forward-p) | |
| 471 (delete-char arg) | |
| 472 (funcall backward-delete-function arg))) | |
| 473 | |
| 474 (defun backward-or-forward-kill-word (arg) | |
| 475 "Delete either one word backwards or one word forwards. | |
| 476 Controlled by the state of `delete-key-deletes-forward' and whether the | |
| 477 BackSpace keysym even exists on your keyboard. If you don't have a | |
| 478 BackSpace keysym, the delete key should always delete one character | |
| 479 backwards." | |
| 480 (interactive "*p") | |
| 481 (if (delete-forward-p) | |
| 482 (kill-word arg) | |
| 483 (backward-kill-word arg))) | |
| 484 | |
| 485 (defun backward-or-forward-kill-sentence (arg) | |
| 486 "Delete either one sentence backwards or one sentence forwards. | |
| 487 Controlled by the state of `delete-key-deletes-forward' and whether the | |
| 488 BackSpace keysym even exists on your keyboard. If you don't have a | |
| 489 BackSpace keysym, the delete key should always delete one character | |
| 490 backwards." | |
| 491 (interactive "*P") | |
| 492 (if (delete-forward-p) | |
| 493 (kill-sentence arg) | |
| 494 (backward-kill-sentence (prefix-numeric-value arg)))) | |
| 495 | |
| 496 (defun backward-or-forward-kill-sexp (arg) | |
| 497 "Delete either one sexpr backwards or one sexpr forwards. | |
| 498 Controlled by the state of `delete-key-deletes-forward' and whether the | |
| 499 BackSpace keysym even exists on your keyboard. If you don't have a | |
| 500 BackSpace keysym, the delete key should always delete one character | |
| 501 backwards." | |
| 502 (interactive "*p") | |
| 503 (if (delete-forward-p) | |
| 504 (kill-sexp arg) | |
| 505 (backward-kill-sexp arg))) | |
| 506 | |
| 507 (defun zap-to-char (arg char) | |
| 508 "Kill up to and including ARG'th occurrence of CHAR. | |
| 509 Goes backward if ARG is negative; error if CHAR not found." | |
| 510 (interactive "*p\ncZap to char: ") | |
| 511 (kill-region (point) (with-interactive-search-caps-disable-folding | |
| 512 (char-to-string char) nil | |
| 513 (search-forward (char-to-string char) nil nil arg) | |
| 514 (point)))) | |
| 515 | |
| 516 (defun zap-up-to-char (arg char) | |
| 517 "Kill up to ARG'th occurrence of CHAR. | |
| 518 Goes backward if ARG is negative; error if CHAR not found." | |
| 519 (interactive "*p\ncZap up to char: ") | |
| 520 (kill-region (point) (with-interactive-search-caps-disable-folding | |
| 521 (char-to-string char) nil | |
| 522 (search-forward (char-to-string char) nil nil arg) | |
| 523 (goto-char (if (> arg 0) (1- (point)) (1+ (point)))) | |
| 524 (point)))) | |
| 525 | |
| 526 (defun beginning-of-buffer (&optional arg) | |
| 527 "Move point to the beginning of the buffer; leave mark at previous position. | |
| 528 With arg N, put point N/10 of the way from the beginning. | |
| 529 | |
| 530 If the buffer is narrowed, this command uses the beginning and size | |
| 531 of the accessible part of the buffer. | |
| 532 | |
| 462 | 533 The characters that are moved over may be added to the current selection |
| 534 \(i.e. active region) if the Shift key is held down, a motion key is used | |
| 535 to invoke this command, and `shifted-motion-keys-select-region' is t; see | |
| 536 the documentation for this variable for more details. | |
| 537 | |
| 428 | 538 Don't use this command in Lisp programs! |
| 539 \(goto-char (point-min)) is faster and avoids clobbering the mark." | |
| 540 ;; XEmacs change | |
| 541 (interactive "_P") | |
| 542 (push-mark) | |
| 543 (let ((size (- (point-max) (point-min)))) | |
| 544 (goto-char (if arg | |
| 545 (+ (point-min) | |
| 546 (if (> size 10000) | |
| 547 ;; Avoid overflow for large buffer sizes! | |
| 548 (* (prefix-numeric-value arg) | |
| 549 (/ size 10)) | |
| 550 (/ (+ 10 (* size (prefix-numeric-value arg))) 10))) | |
| 551 (point-min)))) | |
| 552 (if arg (forward-line 1))) | |
| 553 | |
| 554 (defun end-of-buffer (&optional arg) | |
| 555 "Move point to the end of the buffer; leave mark at previous position. | |
| 556 With arg N, put point N/10 of the way from the end. | |
| 557 | |
| 558 If the buffer is narrowed, this command uses the beginning and size | |
| 559 of the accessible part of the buffer. | |
| 560 | |
| 462 | 561 The characters that are moved over may be added to the current selection |
| 562 \(i.e. active region) if the Shift key is held down, a motion key is used | |
| 563 to invoke this command, and `shifted-motion-keys-select-region' is t; see | |
| 564 the documentation for this variable for more details. | |
| 565 | |
| 428 | 566 Don't use this command in Lisp programs! |
| 567 \(goto-char (point-max)) is faster and avoids clobbering the mark." | |
| 568 ;; XEmacs change | |
| 569 (interactive "_P") | |
| 570 (push-mark) | |
| 571 ;; XEmacs changes here. | |
| 572 (let ((scroll-to-end (not (pos-visible-in-window-p (point-max)))) | |
| 573 (size (- (point-max) (point-min)))) | |
| 574 (goto-char (if arg | |
| 575 (- (point-max) | |
| 576 (if (> size 10000) | |
| 577 ;; Avoid overflow for large buffer sizes! | |
| 578 (* (prefix-numeric-value arg) | |
| 579 (/ size 10)) | |
| 580 (/ (* size (prefix-numeric-value arg)) 10))) | |
| 581 (point-max))) | |
| 582 (cond (arg | |
| 583 ;; If we went to a place in the middle of the buffer, | |
| 584 ;; adjust it to the beginning of a line. | |
| 585 (forward-line 1)) | |
| 586 ;; XEmacs change | |
| 587 (scroll-to-end | |
| 588 ;; If the end of the buffer is not already on the screen, | |
| 589 ;; then scroll specially to put it near, but not at, the bottom. | |
| 590 (recenter -3))))) | |
| 591 | |
| 592 ;; XEmacs (not in FSF) | |
| 593 (defun mark-beginning-of-buffer (&optional arg) | |
| 594 "Push a mark at the beginning of the buffer; leave point where it is. | |
| 595 With arg N, push mark N/10 of the way from the true beginning." | |
| 596 (interactive "P") | |
| 597 (push-mark (if arg | |
| 598 (if (> (buffer-size) 10000) | |
| 599 ;; Avoid overflow for large buffer sizes! | |
| 600 (* (prefix-numeric-value arg) | |
| 601 (/ (buffer-size) 10)) | |
| 602 (/ (+ 10 (* (buffer-size) (prefix-numeric-value arg))) 10)) | |
| 603 (point-min)) | |
| 604 nil | |
| 605 t)) | |
| 606 (define-function 'mark-bob 'mark-beginning-of-buffer) | |
| 607 | |
| 608 ;; XEmacs (not in FSF) | |
| 609 (defun mark-end-of-buffer (&optional arg) | |
| 610 "Push a mark at the end of the buffer; leave point where it is. | |
| 611 With arg N, push mark N/10 of the way from the true end." | |
| 612 (interactive "P") | |
| 613 (push-mark (if arg | |
| 614 (- (1+ (buffer-size)) | |
| 615 (if (> (buffer-size) 10000) | |
| 616 ;; Avoid overflow for large buffer sizes! | |
| 617 (* (prefix-numeric-value arg) | |
| 618 (/ (buffer-size) 10)) | |
| 619 (/ (* (buffer-size) (prefix-numeric-value arg)) 10))) | |
| 620 (point-max)) | |
| 621 nil | |
| 622 t)) | |
| 623 (define-function 'mark-eob 'mark-end-of-buffer) | |
| 624 | |
| 625 (defun mark-whole-buffer () | |
| 626 "Put point at beginning and mark at end of buffer. | |
| 627 You probably should not use this function in Lisp programs; | |
| 628 it is usually a mistake for a Lisp function to use any subroutine | |
| 629 that uses or sets the mark." | |
| 630 (interactive) | |
| 631 (push-mark (point)) | |
| 632 (push-mark (point-max) nil t) | |
| 633 (goto-char (point-min))) | |
| 634 | |
| 635 ;; XEmacs | |
| 636 (defun eval-current-buffer (&optional printflag) | |
| 637 "Evaluate the current buffer as Lisp code. | |
| 638 Programs can pass argument PRINTFLAG which controls printing of output: | |
| 639 nil means discard it; anything else is stream for print." | |
| 640 (interactive) | |
| 641 (eval-buffer (current-buffer) printflag)) | |
| 642 | |
| 643 ;; XEmacs | |
| 644 (defun count-words-buffer (&optional buffer) | |
| 645 "Print the number of words in BUFFER. | |
| 646 If called noninteractively, the value is returned rather than printed. | |
| 647 BUFFER defaults to the current buffer." | |
| 648 (interactive) | |
| 649 (let ((words (count-words-region (point-min) (point-max) buffer))) | |
| 650 (when (interactive-p) | |
| 651 (message "Buffer has %d words" words)) | |
| 652 words)) | |
| 653 | |
| 654 ;; XEmacs | |
| 655 (defun count-words-region (start end &optional buffer) | |
| 656 "Print the number of words in region between START and END in BUFFER. | |
| 657 If called noninteractively, the value is returned rather than printed. | |
| 658 BUFFER defaults to the current buffer." | |
| 659 (interactive "_r") | |
| 660 (save-excursion | |
| 661 (set-buffer (or buffer (current-buffer))) | |
| 662 (let ((words 0)) | |
| 663 (goto-char start) | |
| 664 (while (< (point) end) | |
| 665 (when (forward-word 1) | |
| 666 (incf words))) | |
| 667 (when (interactive-p) | |
| 668 (message "Region has %d words" words)) | |
| 669 words))) | |
| 670 | |
| 671 (defun count-lines-region (start end) | |
| 672 "Print number of lines and characters in the region." | |
| 673 ;; XEmacs change | |
| 674 (interactive "_r") | |
| 675 (message "Region has %d lines, %d characters" | |
| 676 (count-lines start end) (- end start))) | |
| 677 | |
| 678 ;; XEmacs | |
| 679 (defun count-lines-buffer (&optional buffer) | |
| 680 "Print number of lines and characters in BUFFER." | |
| 681 (interactive) | |
| 682 (with-current-buffer (or buffer (current-buffer)) | |
| 683 (let ((cnt (count-lines (point-min) (point-max)))) | |
| 684 (message "Buffer has %d lines, %d characters" | |
| 685 cnt (- (point-max) (point-min))) | |
| 686 cnt))) | |
| 687 | |
| 688 ;;; Modified by Bob Weiner, 8/24/95, to print narrowed line number also. | |
| 689 ;;; Expanded by Bob Weiner, BeOpen, on 02/12/1997 | |
| 690 (defun what-line () | |
| 691 "Print the following variants of the line number of point: | |
| 692 Region line - displayed line within the active region | |
| 693 Collapsed line - includes only selectively displayed lines; | |
| 694 Buffer line - physical line in the buffer; | |
| 695 Narrowed line - line number from the start of the buffer narrowing." | |
| 696 ;; XEmacs change | |
| 697 (interactive "_") | |
| 698 (let ((opoint (point)) start) | |
| 699 (save-excursion | |
| 700 (save-restriction | |
| 701 (if (region-active-p) | |
| 702 (goto-char (region-beginning)) | |
| 703 (goto-char (point-min))) | |
| 704 (widen) | |
| 705 (beginning-of-line) | |
| 706 (setq start (point)) | |
| 707 (goto-char opoint) | |
| 708 (beginning-of-line) | |
| 709 (let* ((buffer-line (1+ (count-lines 1 (point)))) | |
| 710 (narrowed-p (or (/= start 1) | |
| 711 (/= (point-max) (1+ (buffer-size))))) | |
| 712 (narrowed-line (if narrowed-p (1+ (count-lines start (point))))) | |
| 713 (selective-line (if selective-display | |
| 714 (1+ (count-lines start (point) t)))) | |
| 715 (region-line (if (region-active-p) | |
| 716 (1+ (count-lines start (point) selective-display))))) | |
| 717 (cond (region-line | |
| 718 (message "Region line %d; Buffer line %d" | |
| 719 region-line buffer-line)) | |
| 720 ((and narrowed-p selective-line (/= selective-line narrowed-line)) | |
| 721 ;; buffer narrowed and some lines selectively displayed | |
| 722 (message "Collapsed line %d; Buffer line %d; Narrowed line %d" | |
| 723 selective-line buffer-line narrowed-line)) | |
| 724 (narrowed-p | |
| 725 ;; buffer narrowed | |
| 726 (message "Buffer line %d; Narrowed line %d" | |
| 727 buffer-line narrowed-line)) | |
| 728 ((and selective-line (/= selective-line buffer-line)) | |
| 729 ;; some lines selectively displayed | |
| 730 (message "Collapsed line %d; Buffer line %d" | |
| 731 selective-line buffer-line)) | |
| 732 (t | |
| 733 ;; give a basic line count | |
| 734 (message "Line %d" buffer-line))))))) | |
| 735 (setq zmacs-region-stays t)) | |
| 736 | |
| 442 | 737 ;; new in XEmacs 21.2 (not in FSF). |
| 738 (defun line-number (&optional pos respect-narrowing) | |
| 739 "Return the line number of POS (defaults to point). | |
| 740 If RESPECT-NARROWING is non-nil, then the narrowed line number is returned; | |
| 741 otherwise, the absolute line number is returned. The returned line can always | |
| 742 be given to `goto-line' to get back to the current line." | |
| 743 (if (and pos (/= pos (point))) | |
| 744 (save-excursion | |
| 745 (goto-char pos) | |
| 746 (line-number nil respect-narrowing)) | |
| 747 (1+ (count-lines (if respect-narrowing (point-min) 1) (point-at-bol))))) | |
| 748 | |
| 3000 | 749 ;; FSF 22.0.50.1 (CVS) version of above. |
| 750 (defun line-number-at-pos (&optional pos) | |
| 751 (line-number pos t)) | |
| 752 | |
| 428 | 753 (defun count-lines (start end &optional ignore-invisible-lines-flag) |
| 754 "Return number of lines between START and END. | |
| 755 This is usually the number of newlines between them, | |
| 756 but can be one more if START is not equal to END | |
| 757 and the greater of them is not at the start of a line. | |
| 758 | |
| 759 With optional IGNORE-INVISIBLE-LINES-FLAG non-nil, lines collapsed with | |
| 442 | 760 selective-display are excluded from the line count. |
| 761 | |
| 762 NOTE: The expression to return the current line number is not obvious: | |
| 763 | |
| 3767 | 764 \(1+ \(count-lines 1 \(point-at-bol))) |
| 442 | 765 |
| 766 See also `line-number'." | |
| 428 | 767 (save-excursion |
| 768 (save-restriction | |
| 769 (narrow-to-region start end) | |
| 770 (goto-char (point-min)) | |
| 771 (if (and (not ignore-invisible-lines-flag) (eq selective-display t)) | |
| 772 (save-match-data | |
| 773 (let ((done 0)) | |
| 774 (while (re-search-forward "[\n\C-m]" nil t 40) | |
| 775 (setq done (+ 40 done))) | |
| 776 (while (re-search-forward "[\n\C-m]" nil t 1) | |
| 777 (setq done (+ 1 done))) | |
| 778 (goto-char (point-max)) | |
| 779 (if (and (/= start end) | |
| 780 (not (bolp))) | |
| 781 (1+ done) | |
| 782 done))) | |
| 783 (- (buffer-size) (forward-line (buffer-size))))))) | |
| 784 | |
|
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785 (defun what-cursor-position (&optional detail) |
| 3724 | 786 "Print info on cursor position (on screen and within buffer). |
| 787 Also describe the character after point, giving its UCS code point and Mule | |
| 788 charset and codes; for ASCII characters, give its code in octal, decimal and | |
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789 hex. |
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790 |
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791 With prefix argument, show extended details about the character in a |
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792 separate buffer. See also the command `describe-char'." |
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793 ;; XEmacs change "_" |
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794 (interactive "_P") |
| 428 | 795 (let* ((char (char-after (point))) ; XEmacs |
| 796 (beg (point-min)) | |
| 797 (end (point-max)) | |
| 798 (pos (point)) | |
| 799 (total (buffer-size)) | |
| 800 (percent (if (> total 50000) | |
| 801 ;; Avoid overflow from multiplying by 100! | |
| 802 (/ (+ (/ total 200) (1- pos)) (max (/ total 100) 1)) | |
| 803 (/ (+ (/ total 2) (* 100 (1- pos))) (max total 1)))) | |
| 804 (hscroll (if (= (window-hscroll) 0) | |
| 805 "" | |
| 806 (format " Hscroll=%d" (window-hscroll)))) | |
| 3724 | 807 (col (+ (current-column) (if column-number-start-at-one 1 0))) |
| 808 (unicode (and char (encode-char char 'ucs))) | |
| 809 (unicode-string (and unicode (natnump unicode) | |
| 810 (format (if (> unicode #xFFFF) "U+%06X" "U+%04X") | |
| 811 unicode))) | |
| 812 (narrowed-details (if (or (/= beg 1) (/= end (1+ total))) | |
| 813 (format " <%d - %d>" beg end) | |
| 814 ""))) | |
| 815 | |
| 428 | 816 (if (= pos end) |
| 3724 | 817 (message "point=%d of %d(%d%%)%s column %d %s" |
| 818 pos total percent narrowed-details col hscroll) | |
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819 (if detail |
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820 (describe-char (point))) |
| 3724 | 821 ;; XEmacs: don't use single-key-description, treat non-ASCII |
| 822 ;; characters differently. | |
| 823 (if (< char ?\x80) | |
| 824 (message "Char: %s (0%o, %d, %x) point=%d of %d(%d%%)%s column %d %s" | |
| 825 (text-char-description char) char char char pos total | |
| 826 percent narrowed-details col hscroll) | |
| 827 (message "Char: %s (%s %s) point=%d of %d(%d%%)%s column %d %s" | |
| 828 (text-char-description char) unicode-string | |
| 3767 | 829 (mapconcat (lambda (arg) (format "%S" arg)) |
| 830 (split-char char) " ") | |
| 3724 | 831 pos total |
| 832 percent narrowed-details col hscroll))))) | |
| 428 | 833 |
| 834 (defun fundamental-mode () | |
| 835 "Major mode not specialized for anything in particular. | |
| 836 Other major modes are defined by comparison with this one." | |
| 837 (interactive) | |
| 838 (kill-all-local-variables)) | |
| 839 | |
| 840 ;; XEmacs the following are declared elsewhere | |
| 841 ;(defvar read-expression-map (cons 'keymap minibuffer-local-map) | |
| 842 ; "Minibuffer keymap used for reading Lisp expressions.") | |
| 843 ;(define-key read-expression-map "\M-\t" 'lisp-complete-symbol) | |
| 844 | |
| 845 ;(put 'eval-expression 'disabled t) | |
| 846 | |
| 847 ;(defvar read-expression-history nil) | |
| 848 | |
| 849 ;; We define this, rather than making `eval' interactive, | |
| 850 ;; for the sake of completion of names like eval-region, eval-current-buffer. | |
| 851 (defun eval-expression (expression &optional eval-expression-insert-value) | |
| 852 "Evaluate EXPRESSION and print value in minibuffer. | |
| 853 Value is also consed on to front of the variable `values'. | |
| 854 With prefix argument, insert the result to the current buffer." | |
| 855 ;(interactive "xEval: ") | |
| 856 (interactive | |
| 857 (list (read-from-minibuffer "Eval: " | |
| 858 nil read-expression-map t | |
| 859 'read-expression-history) | |
| 860 current-prefix-arg)) | |
| 861 (setq values (cons (eval expression) values)) | |
| 862 (prin1 (car values) | |
| 863 (if eval-expression-insert-value (current-buffer) t))) | |
| 864 | |
| 865 ;; XEmacs -- extra parameter (variant, but equivalent logic) | |
| 444 | 866 (defun edit-and-eval-command (prompt form &optional history) |
| 867 "Prompting with PROMPT, let user edit FORM and eval result. | |
| 868 FORM is a Lisp expression. Let user edit that expression in | |
| 428 | 869 the minibuffer, then read and evaluate the result." |
| 444 | 870 (let ((form (read-expression prompt |
| 871 ;; first try to format the thing readably; | |
| 872 ;; and if that fails, print it normally. | |
| 873 (condition-case () | |
| 874 (let ((print-readably t)) | |
| 875 (prin1-to-string form)) | |
| 876 (error (prin1-to-string form))) | |
| 877 (or history '(command-history . 1))))) | |
| 428 | 878 (or history (setq history 'command-history)) |
| 879 (if (consp history) | |
| 880 (setq history (car history))) | |
| 881 (if (eq history t) | |
| 882 nil | |
| 444 | 883 ;; If form was added to the history as a string, |
| 428 | 884 ;; get rid of that. We want only evallable expressions there. |
| 885 (if (stringp (car (symbol-value history))) | |
| 886 (set history (cdr (symbol-value history)))) | |
| 887 | |
| 444 | 888 ;; If form to be redone does not match front of history, |
| 428 | 889 ;; add it to the history. |
| 444 | 890 (or (equal form (car (symbol-value history))) |
| 891 (set history (cons form (symbol-value history))))) | |
| 892 (eval form))) | |
| 428 | 893 |
| 894 (defun repeat-complex-command (arg) | |
| 895 "Edit and re-evaluate last complex command, or ARGth from last. | |
| 896 A complex command is one which used the minibuffer. | |
| 897 The command is placed in the minibuffer as a Lisp form for editing. | |
| 898 The result is executed, repeating the command as changed. | |
| 899 If the command has been changed or is not the most recent previous command | |
| 900 it is added to the front of the command history. | |
| 901 You can use the minibuffer history commands \\<minibuffer-local-map>\\[next-history-element] and \\[previous-history-element] | |
| 902 to get different commands to edit and resubmit." | |
| 903 (interactive "p") | |
| 904 ;; XEmacs: It looks like our version is better -sb | |
| 905 (let ((print-level nil)) | |
| 906 (edit-and-eval-command "Redo: " | |
| 907 (or (nth (1- arg) command-history) | |
| 908 (error "")) | |
| 909 (cons 'command-history arg)))) | |
| 910 | |
| 911 ;; XEmacs: Functions moved to minibuf.el | |
| 912 ;; previous-matching-history-element | |
| 913 ;; next-matching-history-element | |
| 914 ;; next-history-element | |
| 915 ;; previous-history-element | |
| 916 ;; next-complete-history-element | |
| 917 ;; previous-complete-history-element | |
| 918 | |
| 3361 | 919 (defun goto-line (line &optional buffer) |
| 920 "Goto line LINE, counting from line 1 at beginning of BUFFER." | |
| 428 | 921 (interactive "NGoto line: ") |
| 444 | 922 (setq line (prefix-numeric-value line)) |
| 3361 | 923 (if buffer |
| 924 (let ((window (get-buffer-window buffer))) | |
| 925 (if window (select-window window) | |
| 926 (switch-to-buffer-other-window buffer)))) | |
| 428 | 927 (save-restriction |
| 928 (widen) | |
| 929 (goto-char 1) | |
| 930 (if (eq selective-display t) | |
| 444 | 931 (re-search-forward "[\n\C-m]" nil 'end (1- line)) |
| 932 (forward-line (1- line))))) | |
| 428 | 933 |
| 771 | 934 ;[Put this on C-x u, so we can force that rather than C-_ into startup msg] |
| 935 ;No more, stop pandering to TTY users. | |
| 428 | 936 (define-function 'advertised-undo 'undo) |
| 937 | |
| 444 | 938 (defun undo (&optional count) |
| 428 | 939 "Undo some previous changes. |
| 940 Repeat this command to undo more changes. | |
| 941 A numeric argument serves as a repeat count." | |
| 942 (interactive "*p") | |
| 943 ;; If we don't get all the way through, make last-command indicate that | |
| 944 ;; for the following command. | |
| 945 (setq this-command t) | |
| 946 (let ((modified (buffer-modified-p)) | |
| 947 (recent-save (recent-auto-save-p))) | |
| 948 (or (eq (selected-window) (minibuffer-window)) | |
| 949 (display-message 'command "Undo!")) | |
| 950 (or (and (eq last-command 'undo) | |
| 951 (eq (current-buffer) last-undo-buffer)) ; XEmacs | |
| 952 (progn (undo-start) | |
| 953 (undo-more 1))) | |
| 444 | 954 (undo-more (or count 1)) |
| 428 | 955 ;; Don't specify a position in the undo record for the undo command. |
| 956 ;; Instead, undoing this should move point to where the change is. | |
| 957 (let ((tail buffer-undo-list) | |
| 958 done) | |
| 959 (while (and tail (not done) (not (null (car tail)))) | |
|
4885
6772ce4d982b
Fix hash tables, #'member*, #'assoc*, #'eql compiler macros if bignums
Aidan Kehoe <kehoea@parhasard.net>
parents:
4869
diff
changeset
|
960 (if (fixnump (car tail)) |
| 428 | 961 (progn |
| 962 (setq done t) | |
| 963 (setq buffer-undo-list (delq (car tail) buffer-undo-list)))) | |
| 964 (setq tail (cdr tail)))) | |
| 965 (and modified (not (buffer-modified-p)) | |
| 966 (delete-auto-save-file-if-necessary recent-save))) | |
| 967 ;; If we do get all the way through, make this-command indicate that. | |
| 968 (setq this-command 'undo)) | |
| 969 | |
| 970 (defvar pending-undo-list nil | |
| 971 "Within a run of consecutive undo commands, list remaining to be undone.") | |
| 972 | |
| 973 (defvar last-undo-buffer nil) ; XEmacs | |
| 974 | |
| 975 (defun undo-start () | |
| 976 "Set `pending-undo-list' to the front of the undo list. | |
| 977 The next call to `undo-more' will undo the most recently made change." | |
| 978 (if (eq buffer-undo-list t) | |
| 979 (error "No undo information in this buffer")) | |
| 980 (setq pending-undo-list buffer-undo-list)) | |
| 981 | |
| 982 (defun undo-more (count) | |
| 983 "Undo back N undo-boundaries beyond what was already undone recently. | |
| 984 Call `undo-start' to get ready to undo recent changes, | |
| 985 then call `undo-more' one or more times to undo them." | |
| 986 (or pending-undo-list | |
| 987 (error "No further undo information")) | |
| 988 (setq pending-undo-list (primitive-undo count pending-undo-list) | |
| 989 last-undo-buffer (current-buffer))) ; XEmacs | |
| 990 | |
| 844 | 991 (defun undo-all-changes () |
| 992 "Keep undoing till the start of the undo list is reached. | |
| 993 Undoes all changes, even past a file save. Especially useful when you've | |
| 994 saved the file at some point." | |
| 995 (interactive) | |
| 996 (undo-start) | |
| 997 (while pending-undo-list (undo-more 1))) | |
| 998 | |
| 428 | 999 ;; XEmacs |
| 1000 (defun call-with-transparent-undo (fn &rest args) | |
| 1001 "Apply FN to ARGS, and then undo all changes made by FN to the current | |
| 1002 buffer. The undo records are processed even if FN returns non-locally. | |
| 1003 There is no trace of the changes made by FN in the buffer's undo history. | |
| 1004 | |
| 1005 You can use this in a write-file-hooks function with continue-save-buffer | |
| 1006 to make the contents of a disk file differ from its in-memory buffer." | |
| 1007 (let ((buffer-undo-list nil) | |
| 1008 ;; Kludge to prevent undo list truncation: | |
| 1009 (undo-high-threshold -1) | |
| 1010 (undo-threshold -1) | |
| 1011 (obuffer (current-buffer))) | |
| 1012 (unwind-protect | |
| 1013 (apply fn args) | |
| 1014 ;; Go to the buffer we will restore and make it writable: | |
| 1015 (set-buffer obuffer) | |
| 1016 (save-excursion | |
| 1017 (let ((buffer-read-only nil)) | |
| 1018 (save-restriction | |
| 1019 (widen) | |
| 1020 ;; Perform all undos, with further undo logging disabled: | |
| 1021 (let ((tail buffer-undo-list)) | |
| 1022 (setq buffer-undo-list t) | |
| 1023 (while tail | |
| 1024 (setq tail (primitive-undo (length tail) tail)))))))))) | |
| 1025 | |
| 1026 ;; XEmacs: The following are in other files | |
| 1027 ;; shell-command-history | |
| 1028 ;; shell-command-switch | |
| 1029 ;; shell-command | |
| 1030 ;; shell-command-sentinel | |
| 1031 | |
| 1032 | |
| 1033 (defconst universal-argument-map | |
| 1034 (let ((map (make-sparse-keymap))) | |
| 1035 (set-keymap-default-binding map 'universal-argument-other-key) | |
| 1036 ;FSFmacs (define-key map [switch-frame] nil) | |
| 1037 (define-key map [(t)] 'universal-argument-other-key) | |
| 1038 (define-key map [(meta t)] 'universal-argument-other-key) | |
| 1039 (define-key map [(control u)] 'universal-argument-more) | |
| 1040 (define-key map [?-] 'universal-argument-minus) | |
| 1041 (define-key map [?0] 'digit-argument) | |
| 1042 (define-key map [?1] 'digit-argument) | |
| 1043 (define-key map [?2] 'digit-argument) | |
| 1044 (define-key map [?3] 'digit-argument) | |
| 1045 (define-key map [?4] 'digit-argument) | |
| 1046 (define-key map [?5] 'digit-argument) | |
| 1047 (define-key map [?6] 'digit-argument) | |
| 1048 (define-key map [?7] 'digit-argument) | |
| 1049 (define-key map [?8] 'digit-argument) | |
| 1050 (define-key map [?9] 'digit-argument) | |
| 1051 map) | |
| 1052 "Keymap used while processing \\[universal-argument].") | |
| 1053 | |
| 1054 (defvar universal-argument-num-events nil | |
| 1055 "Number of argument-specifying events read by `universal-argument'. | |
| 1056 `universal-argument-other-key' uses this to discard those events | |
| 1057 from (this-command-keys), and reread only the final command.") | |
| 1058 | |
| 1059 (defun universal-argument () | |
| 1060 "Begin a numeric argument for the following command. | |
| 1061 Digits or minus sign following \\[universal-argument] make up the numeric argument. | |
| 1062 \\[universal-argument] following the digits or minus sign ends the argument. | |
| 1063 \\[universal-argument] without digits or minus sign provides 4 as argument. | |
| 1064 Repeating \\[universal-argument] without digits or minus sign | |
| 1065 multiplies the argument by 4 each time." | |
| 1066 (interactive) | |
| 1067 (setq prefix-arg (list 4)) | |
| 1068 (setq zmacs-region-stays t) ; XEmacs | |
| 1069 (setq universal-argument-num-events (length (this-command-keys))) | |
| 1070 (setq overriding-terminal-local-map universal-argument-map)) | |
| 1071 | |
| 1072 ;; A subsequent C-u means to multiply the factor by 4 if we've typed | |
| 1073 ;; nothing but C-u's; otherwise it means to terminate the prefix arg. | |
| 1074 (defun universal-argument-more (arg) | |
| 1075 (interactive "_P") ; XEmacs | |
| 1076 (if (consp arg) | |
| 1077 (setq prefix-arg (list (* 4 (car arg)))) | |
| 1078 (setq prefix-arg arg) | |
| 1079 (setq overriding-terminal-local-map nil)) | |
| 1080 (setq universal-argument-num-events (length (this-command-keys)))) | |
| 1081 | |
| 1082 (defun negative-argument (arg) | |
| 1083 "Begin a negative numeric argument for the next command. | |
| 1084 \\[universal-argument] following digits or minus sign ends the argument." | |
| 1085 (interactive "_P") ; XEmacs | |
| 1086 (cond ((integerp arg) | |
| 1087 (setq prefix-arg (- arg))) | |
| 1088 ((eq arg '-) | |
| 1089 (setq prefix-arg nil)) | |
| 1090 (t | |
| 1091 (setq prefix-arg '-))) | |
| 1092 (setq universal-argument-num-events (length (this-command-keys))) | |
| 1093 (setq overriding-terminal-local-map universal-argument-map)) | |
| 1094 | |
| 1095 ;; XEmacs: This function not synched with FSF | |
| 1096 (defun digit-argument (arg) | |
| 1097 "Part of the numeric argument for the next command. | |
| 1098 \\[universal-argument] following digits or minus sign ends the argument." | |
| 1099 (interactive "_P") ; XEmacs | |
| 1100 (let* ((event last-command-event) | |
| 1101 (key (and (key-press-event-p event) | |
| 1102 (event-key event))) | |
| 1103 (digit (and key (characterp key) (>= key ?0) (<= key ?9) | |
| 1104 (- key ?0)))) | |
| 1105 (if (null digit) | |
| 1106 (universal-argument-other-key arg) | |
| 1107 (cond ((integerp arg) | |
| 1108 (setq prefix-arg (+ (* arg 10) | |
| 1109 (if (< arg 0) (- digit) digit)))) | |
| 1110 ((eq arg '-) | |
| 1111 ;; Treat -0 as just -, so that -01 will work. | |
| 1112 (setq prefix-arg (if (zerop digit) '- (- digit)))) | |
| 1113 (t | |
| 1114 (setq prefix-arg digit))) | |
| 1115 (setq universal-argument-num-events (length (this-command-keys))) | |
| 1116 (setq overriding-terminal-local-map universal-argument-map)))) | |
| 1117 | |
| 1118 ;; For backward compatibility, minus with no modifiers is an ordinary | |
| 1119 ;; command if digits have already been entered. | |
| 1120 (defun universal-argument-minus (arg) | |
| 1121 (interactive "_P") ; XEmacs | |
| 1122 (if (integerp arg) | |
| 1123 (universal-argument-other-key arg) | |
| 1124 (negative-argument arg))) | |
| 1125 | |
| 1126 ;; Anything else terminates the argument and is left in the queue to be | |
| 1127 ;; executed as a command. | |
| 1128 (defun universal-argument-other-key (arg) | |
| 1129 (interactive "_P") ; XEmacs | |
| 1130 (setq prefix-arg arg) | |
| 1131 (let* ((key (this-command-keys)) | |
| 1132 ;; FSF calls silly function `listify-key-sequence' here. | |
| 1133 (keylist (append key nil))) | |
| 1134 (setq unread-command-events | |
| 1135 (append (nthcdr universal-argument-num-events keylist) | |
| 1136 unread-command-events))) | |
| 1137 (reset-this-command-lengths) | |
| 1138 (setq overriding-terminal-local-map nil)) | |
| 1139 | |
| 1140 | |
| 1141 ;; XEmacs -- keep zmacs-region active. | |
| 444 | 1142 (defun forward-to-indentation (count) |
| 1143 "Move forward COUNT lines and position at first nonblank character." | |
| 428 | 1144 (interactive "_p") |
| 444 | 1145 (forward-line count) |
| 428 | 1146 (skip-chars-forward " \t")) |
| 1147 | |
| 444 | 1148 (defun backward-to-indentation (count) |
| 1149 "Move backward COUNT lines and position at first nonblank character." | |
| 428 | 1150 (interactive "_p") |
| 444 | 1151 (forward-line (- count)) |
| 428 | 1152 (skip-chars-forward " \t")) |
| 1153 | |
| 1154 (defcustom kill-whole-line nil | |
| 462 | 1155 "*If non-nil, kill the whole line if point is at the beginning. |
| 1156 Otherwise, `kill-line' kills only up to the end of the line, but not | |
| 503 | 1157 the terminating newline. |
| 462 | 1158 |
| 1159 WARNING: This is a misnamed variable! It should be called something | |
| 1160 like `kill-whole-line-when-at-beginning'. If you simply want | |
| 1161 \\[kill-line] to kill the entire current line, bind it to the function | |
| 1162 `kill-entire-line'. " | |
| 1163 :type 'boolean | |
| 428 | 1164 :group 'killing) |
| 1165 | |
| 503 | 1166 (defun kill-line-1 (arg entire-line) |
| 462 | 1167 (kill-region (if entire-line |
| 442 | 1168 (save-excursion |
| 1169 (beginning-of-line) | |
| 1170 (point)) | |
| 1171 (point)) | |
| 428 | 1172 ;; Don't shift point before doing the delete; that way, |
| 1173 ;; undo will record the right position of point. | |
| 1174 ;; FSF | |
| 1175 ; ;; It is better to move point to the other end of the kill | |
| 1176 ; ;; before killing. That way, in a read-only buffer, point | |
| 1177 ; ;; moves across the text that is copied to the kill ring. | |
| 1178 ; ;; The choice has no effect on undo now that undo records | |
| 1179 ; ;; the value of point from before the command was run. | |
| 1180 ; (progn | |
| 1181 (save-excursion | |
| 1182 (if arg | |
| 1183 (forward-line (prefix-numeric-value arg)) | |
| 1184 (if (eobp) | |
| 1185 (signal 'end-of-buffer nil)) | |
| 442 | 1186 (if (or (looking-at "[ \t]*$") |
| 462 | 1187 (or entire-line |
| 503 | 1188 (and kill-whole-line (bolp)))) |
| 428 | 1189 (forward-line 1) |
| 1190 (end-of-line))) | |
| 1191 (point)))) | |
| 1192 | |
| 462 | 1193 (defun kill-entire-line (&optional arg) |
| 1194 "Kill the entire line. | |
| 1195 With prefix argument, kill that many lines from point. Negative | |
| 1196 arguments kill lines backward. | |
| 1197 | |
| 1198 When calling from a program, nil means \"no arg\", | |
| 1199 a number counts as a prefix arg." | |
| 1200 (interactive "*P") | |
| 503 | 1201 (kill-line-1 arg t)) |
| 462 | 1202 |
| 1203 (defun kill-line (&optional arg) | |
| 1204 "Kill the rest of the current line, or the entire line. | |
| 1205 If no nonblanks there, kill thru newline. If called interactively, | |
| 1206 may kill the entire line when given no argument at the beginning of a | |
| 1207 line; see `kill-whole-line'. With prefix argument, kill that many | |
| 1208 lines from point. Negative arguments kill lines backward. | |
| 1209 | |
| 1210 WARNING: This is a misnamed function! It should be called something | |
| 1211 like `kill-to-end-of-line'. If you simply want to kill the entire | |
| 1212 current line, use `kill-entire-line'. | |
| 1213 | |
| 1214 When calling from a program, nil means \"no arg\", | |
| 1215 a number counts as a prefix arg." | |
| 1216 (interactive "*P") | |
| 503 | 1217 (kill-line-1 arg nil)) |
| 462 | 1218 |
| 428 | 1219 ;; XEmacs |
| 1220 (defun backward-kill-line nil | |
| 1221 "Kill back to the beginning of the line." | |
| 1222 (interactive) | |
| 1223 (let ((point (point))) | |
| 1224 (beginning-of-line nil) | |
| 1225 (kill-region (point) point))) | |
| 1226 | |
| 1227 | |
| 1228 ;;;; Window system cut and paste hooks. | |
| 1229 ;;; | |
| 1230 ;;; I think that kill-hooks is a better name and more general mechanism | |
| 1231 ;;; than interprogram-cut-function (from FSFmacs). I don't like the behavior | |
| 1232 ;;; of interprogram-paste-function: ^Y should always come from the kill ring, | |
| 1233 ;;; not the X selection. But if that were provided, it should be called (and | |
| 1234 ;;; behave as) yank-hooks instead. -- jwz | |
| 1235 | |
| 1236 ;; [... code snipped ...] | |
| 1237 | |
| 1238 (defcustom kill-hooks nil | |
| 1239 "*Functions run when something is added to the XEmacs kill ring. | |
| 1240 These functions are called with one argument, the string most recently | |
| 1241 cut or copied. You can use this to, for example, make the most recent | |
| 1242 kill become the X Clipboard selection." | |
| 1243 :type 'hook | |
| 1244 :group 'killing) | |
| 1245 | |
| 1246 ;;; `kill-hooks' seems not sufficient because | |
| 1247 ;;; `interprogram-cut-function' requires more variable about to rotate | |
| 1248 ;;; the cut buffers. I'm afraid to change interface of `kill-hooks', | |
| 1249 ;;; so I add it. (1997-11-03 by MORIOKA Tomohiko) | |
| 1250 | |
| 442 | 1251 (defcustom interprogram-cut-function 'own-clipboard |
| 428 | 1252 "Function to call to make a killed region available to other programs. |
| 1253 | |
| 1254 Most window systems provide some sort of facility for cutting and | |
| 1255 pasting text between the windows of different programs. | |
| 1256 This variable holds a function that Emacs calls whenever text | |
| 1257 is put in the kill ring, to make the new kill available to other | |
| 1258 programs. | |
| 1259 | |
| 1260 The function takes one or two arguments. | |
| 1261 The first argument, TEXT, is a string containing | |
| 1262 the text which should be made available. | |
| 1263 The second, PUSH, if non-nil means this is a \"new\" kill; | |
| 843 | 1264 nil means appending to an \"old\" kill. |
| 1265 | |
| 1266 One reasonable choice is `own-clipboard' (the default)." | |
| 442 | 1267 :type '(radio (function-item :tag "Send to Clipboard" |
| 1268 :format "%t\n" | |
| 1269 own-clipboard) | |
| 1270 (const :tag "None" nil) | |
| 1271 (function :tag "Other")) | |
| 1272 :group 'killing) | |
| 1273 | |
| 843 | 1274 (defcustom interprogram-paste-function 'get-clipboard-foreign |
| 428 | 1275 "Function to call to get text cut from other programs. |
| 1276 | |
| 1277 Most window systems provide some sort of facility for cutting and | |
| 1278 pasting text between the windows of different programs. | |
| 1279 This variable holds a function that Emacs calls to obtain | |
| 1280 text that other programs have provided for pasting. | |
| 1281 | |
| 1282 The function should be called with no arguments. If the function | |
| 1283 returns nil, then no other program has provided such text, and the top | |
| 1284 of the Emacs kill ring should be used. If the function returns a | |
| 1285 string, that string should be put in the kill ring as the latest kill. | |
| 1286 | |
| 1287 Note that the function should return a string only if a program other | |
| 1288 than Emacs has provided a string for pasting; if Emacs provided the | |
| 1289 most recent string, the function should return nil. If it is | |
| 1290 difficult to tell whether Emacs or some other program provided the | |
| 1291 current string, it is probably good enough to return nil if the string | |
| 843 | 1292 is equal (according to `string=') to the last text Emacs provided. |
| 1293 | |
| 1294 Reasonable choices include `get-clipboard-foreign' (the default), and | |
| 1295 functions calling `get-selection-foreign' (q.v.)." | |
| 442 | 1296 :type '(radio (function-item :tag "Get from Clipboard" |
| 1297 :format "%t\n" | |
| 843 | 1298 get-clipboard-foreign) |
| 442 | 1299 (const :tag "None" nil) |
| 1300 (function :tag "Other")) | |
| 1301 :group 'killing) | |
| 428 | 1302 |
| 1303 | |
| 1304 ;;;; The kill ring data structure. | |
| 1305 | |
| 1306 (defvar kill-ring nil | |
| 1307 "List of killed text sequences. | |
| 1308 Since the kill ring is supposed to interact nicely with cut-and-paste | |
| 1309 facilities offered by window systems, use of this variable should | |
| 1310 interact nicely with `interprogram-cut-function' and | |
| 1311 `interprogram-paste-function'. The functions `kill-new', | |
| 1312 `kill-append', and `current-kill' are supposed to implement this | |
| 1313 interaction; you may want to use them instead of manipulating the kill | |
| 1314 ring directly.") | |
| 1315 | |
| 829 | 1316 (defcustom kill-ring-max 60 |
| 428 | 1317 "*Maximum length of kill ring before oldest elements are thrown away." |
| 1318 :type 'integer | |
| 1319 :group 'killing) | |
| 1320 | |
| 1321 (defvar kill-ring-yank-pointer nil | |
| 1322 "The tail of the kill ring whose car is the last thing yanked.") | |
| 1323 | |
| 1324 (defun kill-new (string &optional replace) | |
| 1325 "Make STRING the latest kill in the kill ring. | |
| 444 | 1326 Set `kill-ring-yank-pointer' to point to it. |
| 829 | 1327 If `interprogram-cut-function' is non-nil, apply it to STRING. |
| 428 | 1328 Run `kill-hooks'. |
| 1329 Optional second argument REPLACE non-nil means that STRING will replace | |
| 1330 the front of the kill ring, rather than being added to the list." | |
| 1331 ; (and (fboundp 'menu-bar-update-yank-menu) | |
| 1332 ; (menu-bar-update-yank-menu string (and replace (car kill-ring)))) | |
| 829 | 1333 (if (and replace kill-ring) |
| 428 | 1334 (setcar kill-ring string) |
| 1335 (setq kill-ring (cons string kill-ring)) | |
| 1336 (if (> (length kill-ring) kill-ring-max) | |
| 1337 (setcdr (nthcdr (1- kill-ring-max) kill-ring) nil))) | |
| 1338 (setq kill-ring-yank-pointer kill-ring) | |
| 1339 (if interprogram-cut-function | |
| 1340 (funcall interprogram-cut-function string (not replace))) | |
| 1341 (run-hook-with-args 'kill-hooks string)) | |
| 1342 | |
| 1343 (defun kill-append (string before-p) | |
| 1344 "Append STRING to the end of the latest kill in the kill ring. | |
| 1345 If BEFORE-P is non-nil, prepend STRING to the kill. | |
| 1346 Run `kill-hooks'." | |
| 1347 (kill-new (if before-p | |
| 1348 (concat string (car kill-ring)) | |
| 1349 (concat (car kill-ring) string)) t)) | |
| 1350 | |
| 1351 (defun current-kill (n &optional do-not-move) | |
| 1352 "Rotate the yanking point by N places, and then return that kill. | |
| 1353 If N is zero, `interprogram-paste-function' is set, and calling it | |
| 1354 returns a string, then that string is added to the front of the | |
| 1355 kill ring and returned as the latest kill. | |
| 1356 If optional arg DO-NOT-MOVE is non-nil, then don't actually move the | |
| 1357 yanking point\; just return the Nth kill forward." | |
| 1358 (let ((interprogram-paste (and (= n 0) | |
| 1359 interprogram-paste-function | |
| 1360 (funcall interprogram-paste-function)))) | |
| 1361 (if interprogram-paste | |
| 1362 (progn | |
| 1363 ;; Disable the interprogram cut function when we add the new | |
| 1364 ;; text to the kill ring, so Emacs doesn't try to own the | |
| 1365 ;; selection, with identical text. | |
| 1366 (let ((interprogram-cut-function nil)) | |
| 1367 (kill-new interprogram-paste)) | |
| 1368 interprogram-paste) | |
| 1369 (or kill-ring (error "Kill ring is empty")) | |
| 1370 (let* ((tem (nthcdr (mod (- n (length kill-ring-yank-pointer)) | |
| 1371 (length kill-ring)) | |
| 1372 kill-ring))) | |
| 1373 (or do-not-move | |
| 1374 (setq kill-ring-yank-pointer tem)) | |
| 1375 (car tem))))) | |
| 1376 | |
| 1377 | |
| 1378 | |
| 1379 ;;;; Commands for manipulating the kill ring. | |
| 1380 | |
| 1381 ;; In FSF killing read-only text just pastes it into kill-ring. Which | |
| 1382 ;; is a very bad idea -- see Jamie's comment below. | |
| 1383 | |
| 1384 ;(defvar kill-read-only-ok nil | |
| 1385 ; "*Non-nil means don't signal an error for killing read-only text.") | |
| 1386 | |
| 444 | 1387 (defun kill-region (start end &optional verbose) ; verbose is XEmacs addition |
| 428 | 1388 "Kill between point and mark. |
| 1389 The text is deleted but saved in the kill ring. | |
| 1390 The command \\[yank] can retrieve it from there. | |
| 1391 \(If you want to kill and then yank immediately, use \\[copy-region-as-kill].) | |
| 1392 | |
| 1393 This is the primitive for programs to kill text (as opposed to deleting it). | |
| 1394 Supply two arguments, character numbers indicating the stretch of text | |
| 1395 to be killed. | |
| 1396 Any command that calls this function is a \"kill command\". | |
| 1397 If the previous command was also a kill command, | |
| 1398 the text killed this time appends to the text killed last time | |
| 1399 to make one entry in the kill ring." | |
| 1400 (interactive "*r\np") | |
| 1401 ; (interactive | |
| 1402 ; (let ((region-hack (and zmacs-regions (eq last-command 'yank)))) | |
| 1403 ; ;; This lets "^Y^W" work. I think this is dumb, but zwei did it. | |
| 1404 ; (if region-hack (zmacs-activate-region)) | |
| 1405 ; (prog1 | |
| 1406 ; (list (point) (mark) current-prefix-arg) | |
| 1407 ; (if region-hack (zmacs-deactivate-region))))) | |
| 444 | 1408 ;; start and end can be markers but the rest of this function is |
| 428 | 1409 ;; written as if they are only integers |
| 444 | 1410 (if (markerp start) (setq start (marker-position start))) |
| 428 | 1411 (if (markerp end) (setq end (marker-position end))) |
| 444 | 1412 (or (and start end) (if zmacs-regions ;; rewritten for I18N3 snarfing |
| 428 | 1413 (error "The region is not active now") |
| 1414 (error "The mark is not set now"))) | |
| 1415 (if verbose (if buffer-read-only | |
| 1416 (lmessage 'command "Copying %d characters" | |
| 444 | 1417 (- (max start end) (min start end))) |
| 428 | 1418 (lmessage 'command "Killing %d characters" |
| 444 | 1419 (- (max start end) (min start end))))) |
| 428 | 1420 (cond |
| 1421 | |
| 1422 ;; I don't like this large change in behavior -- jwz | |
| 1423 ;; Read-Only text means it shouldn't be deleted, so I'm restoring | |
| 1424 ;; this code, but only for text-properties and not full extents. -sb | |
| 1425 ;; If the buffer is read-only, we should beep, in case the person | |
| 1426 ;; just isn't aware of this. However, there's no harm in putting | |
| 1427 ;; the region's text in the kill ring, anyway. | |
| 1428 ((or (and buffer-read-only (not inhibit-read-only)) | |
| 444 | 1429 (text-property-not-all (min start end) (max start end) 'read-only nil)) |
| 428 | 1430 ;; This is redundant. |
| 1431 ;; (if verbose (message "Copying %d characters" | |
| 444 | 1432 ;; (- (max start end) (min start end)))) |
| 1433 (copy-region-as-kill start end) | |
| 428 | 1434 ;; ;; This should always barf, and give us the correct error. |
| 1435 ;; (if kill-read-only-ok | |
| 1436 ;; (message "Read only text copied to kill ring") | |
| 1437 (setq this-command 'kill-region) | |
| 1438 (barf-if-buffer-read-only) | |
| 1439 (signal 'buffer-read-only (list (current-buffer)))) | |
| 1440 | |
| 1441 ;; In certain cases, we can arrange for the undo list and the kill | |
| 1442 ;; ring to share the same string object. This code does that. | |
| 1443 ((not (or (eq buffer-undo-list t) | |
| 1444 (eq last-command 'kill-region) | |
| 1445 ;; Use = since positions may be numbers or markers. | |
| 444 | 1446 (= start end))) |
| 428 | 1447 ;; Don't let the undo list be truncated before we can even access it. |
| 1448 ;; FSF calls this `undo-strong-limit' | |
| 444 | 1449 (let ((undo-high-threshold (+ (- end start) 100)) |
| 428 | 1450 ;(old-list buffer-undo-list) |
| 1451 tail) | |
| 444 | 1452 (delete-region start end) |
| 428 | 1453 ;; Search back in buffer-undo-list for this string, |
| 1454 ;; in case a change hook made property changes. | |
| 1455 (setq tail buffer-undo-list) | |
| 1456 (while (and tail | |
| 1457 (not (stringp (car-safe (car-safe tail))))) ; XEmacs | |
| 1458 (pop tail)) | |
| 1459 ;; Take the same string recorded for undo | |
| 1460 ;; and put it in the kill-ring. | |
| 1461 (and tail | |
| 1462 (kill-new (car (car tail)))))) | |
| 1463 | |
| 1464 (t | |
| 1465 ;; if undo is not kept, grab the string then delete it (which won't | |
| 1466 ;; add another string to the undo list). | |
| 444 | 1467 (copy-region-as-kill start end) |
| 1468 (delete-region start end))) | |
| 428 | 1469 (setq this-command 'kill-region)) |
| 1470 | |
| 1471 ;; copy-region-as-kill no longer sets this-command, because it's confusing | |
| 1472 ;; to get two copies of the text when the user accidentally types M-w and | |
| 1473 ;; then corrects it with the intended C-w. | |
| 444 | 1474 (defun copy-region-as-kill (start end) |
| 428 | 1475 "Save the region as if killed, but don't kill it. |
| 1476 Run `kill-hooks'." | |
| 1477 (interactive "r") | |
| 1478 (if (eq last-command 'kill-region) | |
| 444 | 1479 (kill-append (buffer-substring start end) (< end start)) |
| 1480 (kill-new (buffer-substring start end))) | |
| 428 | 1481 nil) |
| 1482 | |
| 444 | 1483 (defun kill-ring-save (start end) |
| 428 | 1484 "Save the region as if killed, but don't kill it. |
| 1485 This command is similar to `copy-region-as-kill', except that it gives | |
| 1486 visual feedback indicating the extent of the region being copied." | |
| 1487 (interactive "r") | |
| 444 | 1488 (copy-region-as-kill start end) |
| 428 | 1489 ;; copy before delay, for xclipboard's benefit |
| 1490 (if (interactive-p) | |
| 444 | 1491 (let ((other-end (if (= (point) start) end start)) |
| 428 | 1492 (opoint (point)) |
| 1493 ;; Inhibit quitting so we can make a quit here | |
| 1494 ;; look like a C-g typed as a command. | |
| 1495 (inhibit-quit t)) | |
| 1496 (if (pos-visible-in-window-p other-end (selected-window)) | |
| 1497 (progn | |
| 1498 ;; FSF (I'm not sure what this does -sb) | |
| 1499 ; ;; Swap point and mark. | |
| 1500 ; (set-marker (mark-marker) (point) (current-buffer)) | |
| 1501 (goto-char other-end) | |
| 1502 (sit-for 1) | |
| 1503 ; ;; Swap back. | |
| 1504 ; (set-marker (mark-marker) other-end (current-buffer)) | |
| 1505 (goto-char opoint) | |
| 1506 ;; If user quit, deactivate the mark | |
| 1507 ;; as C-g would as a command. | |
| 1508 (and quit-flag (mark) | |
| 1509 (zmacs-deactivate-region))) | |
| 1510 ;; too noisy. -- jwz | |
| 1511 ; (let* ((killed-text (current-kill 0)) | |
| 1512 ; (message-len (min (length killed-text) 40))) | |
| 444 | 1513 ; (if (= (point) start) |
| 428 | 1514 ; ;; Don't say "killed"; that is misleading. |
| 1515 ; (message "Saved text until \"%s\"" | |
| 1516 ; (substring killed-text (- message-len))) | |
| 1517 ; (message "Saved text from \"%s\"" | |
| 1518 ; (substring killed-text 0 message-len)))) | |
| 1519 )))) | |
| 1520 | |
| 1521 (defun append-next-kill () | |
| 1522 "Cause following command, if it kills, to append to previous kill." | |
| 1523 ;; XEmacs | |
| 1524 (interactive "_") | |
| 1525 (if (interactive-p) | |
| 1526 (progn | |
| 1527 (setq this-command 'kill-region) | |
| 1528 (display-message 'command | |
| 1529 "If the next command is a kill, it will append")) | |
| 1530 (setq last-command 'kill-region))) | |
| 1531 | |
| 1532 (defun yank-pop (arg) | |
| 1533 "Replace just-yanked stretch of killed text with a different stretch. | |
| 1534 This command is allowed only immediately after a `yank' or a `yank-pop'. | |
| 1535 At such a time, the region contains a stretch of reinserted | |
| 1536 previously-killed text. `yank-pop' deletes that text and inserts in its | |
| 1537 place a different stretch of killed text. | |
| 1538 | |
| 1539 With no argument, the previous kill is inserted. | |
| 1540 With argument N, insert the Nth previous kill. | |
| 1541 If N is negative, this is a more recent kill. | |
| 1542 | |
| 1543 The sequence of kills wraps around, so that after the oldest one | |
| 1544 comes the newest one." | |
| 1545 (interactive "*p") | |
| 1546 (if (not (eq last-command 'yank)) | |
| 1547 (error "Previous command was not a yank")) | |
| 1548 (setq this-command 'yank) | |
| 1549 (let ((inhibit-read-only t) | |
| 1550 (before (< (point) (mark t)))) | |
| 1551 (delete-region (point) (mark t)) | |
| 1552 ;;(set-marker (mark-marker) (point) (current-buffer)) | |
| 1553 (set-mark (point)) | |
| 1554 (insert (current-kill arg)) | |
| 1555 (if before | |
| 1556 ;; This is like exchange-point-and-mark, but doesn't activate the mark. | |
| 1557 ;; It is cleaner to avoid activation, even though the command | |
| 1558 ;; loop would deactivate the mark because we inserted text. | |
| 1559 (goto-char (prog1 (mark t) | |
| 1560 (set-marker (mark-marker t) (point) (current-buffer)))))) | |
| 1561 nil) | |
| 1562 | |
| 1563 | |
| 1564 (defun yank (&optional arg) | |
| 1565 "Reinsert the last stretch of killed text. | |
| 1566 More precisely, reinsert the stretch of killed text most recently | |
| 1567 killed OR yanked. Put point at end, and set mark at beginning. | |
| 1568 With just C-u as argument, same but put point at beginning (and mark at end). | |
| 1569 With argument N, reinsert the Nth most recently killed stretch of killed | |
| 1570 text. | |
| 1571 See also the command \\[yank-pop]." | |
| 1572 (interactive "*P") | |
| 1573 ;; If we don't get all the way through, make last-command indicate that | |
| 1574 ;; for the following command. | |
| 1575 (setq this-command t) | |
| 1576 (push-mark (point)) | |
| 1577 (insert (current-kill (cond | |
| 1578 ((listp arg) 0) | |
| 1579 ((eq arg '-) -1) | |
| 1580 (t (1- arg))))) | |
| 1581 (if (consp arg) | |
| 1582 ;; This is like exchange-point-and-mark, but doesn't activate the mark. | |
| 1583 ;; It is cleaner to avoid activation, even though the command | |
| 1584 ;; loop would deactivate the mark because we inserted text. | |
| 1585 ;; (But it's an unnecessary kludge in XEmacs.) | |
| 1586 ;(goto-char (prog1 (mark t) | |
| 1587 ;(set-marker (mark-marker) (point) (current-buffer))))) | |
| 1588 (exchange-point-and-mark t)) | |
| 1589 ;; If we do get all the way thru, make this-command indicate that. | |
| 1590 (setq this-command 'yank) | |
| 1591 nil) | |
| 1592 | |
| 1593 (defun rotate-yank-pointer (arg) | |
| 1594 "Rotate the yanking point in the kill ring. | |
| 1595 With argument, rotate that many kills forward (or backward, if negative)." | |
| 1596 (interactive "p") | |
| 1597 (current-kill arg)) | |
| 1598 | |
| 1599 | |
| 1600 (defun insert-buffer (buffer) | |
| 1601 "Insert after point the contents of BUFFER. | |
| 1602 Puts mark after the inserted text. | |
| 1603 BUFFER may be a buffer or a buffer name." | |
| 1604 (interactive | |
| 1605 (list | |
| 1606 (progn | |
| 1607 (barf-if-buffer-read-only) | |
| 1608 (read-buffer "Insert buffer: " | |
| 1609 ;; XEmacs: we have different args | |
| 1610 (other-buffer (current-buffer) nil t) | |
| 1611 t)))) | |
| 1612 (or (bufferp buffer) | |
| 1613 (setq buffer (get-buffer buffer))) | |
| 1614 (let (start end newmark) | |
| 1615 (save-excursion | |
| 1616 (save-excursion | |
| 1617 (set-buffer buffer) | |
| 1618 (setq start (point-min) end (point-max))) | |
| 1619 (insert-buffer-substring buffer start end) | |
| 1620 (setq newmark (point))) | |
| 1621 (push-mark newmark)) | |
| 1622 nil) | |
| 1623 | |
| 1624 (defun append-to-buffer (buffer start end) | |
| 1625 "Append to specified buffer the text of the region. | |
| 1626 It is inserted into that buffer before its point. | |
| 1627 | |
| 1628 When calling from a program, give three arguments: | |
| 1629 BUFFER (or buffer name), START and END. | |
| 1630 START and END specify the portion of the current buffer to be copied." | |
| 1631 (interactive | |
| 1632 ;; XEmacs: we have different args to other-buffer | |
| 1633 (list (read-buffer "Append to buffer: " (other-buffer (current-buffer) | |
| 1634 nil t)) | |
| 1635 (region-beginning) (region-end))) | |
| 1636 (let ((oldbuf (current-buffer))) | |
| 1637 (save-excursion | |
| 1638 (set-buffer (get-buffer-create buffer)) | |
| 1639 (insert-buffer-substring oldbuf start end)))) | |
| 1640 | |
| 1641 (defun prepend-to-buffer (buffer start end) | |
| 1642 "Prepend to specified buffer the text of the region. | |
| 1643 It is inserted into that buffer after its point. | |
| 1644 | |
| 1645 When calling from a program, give three arguments: | |
| 1646 BUFFER (or buffer name), START and END. | |
| 1647 START and END specify the portion of the current buffer to be copied." | |
| 1648 (interactive "BPrepend to buffer: \nr") | |
| 1649 (let ((oldbuf (current-buffer))) | |
| 1650 (save-excursion | |
| 1651 (set-buffer (get-buffer-create buffer)) | |
| 1652 (save-excursion | |
| 1653 (insert-buffer-substring oldbuf start end))))) | |
| 1654 | |
| 1655 (defun copy-to-buffer (buffer start end) | |
| 1656 "Copy to specified buffer the text of the region. | |
| 1657 It is inserted into that buffer, replacing existing text there. | |
| 1658 | |
| 1659 When calling from a program, give three arguments: | |
| 1660 BUFFER (or buffer name), START and END. | |
| 1661 START and END specify the portion of the current buffer to be copied." | |
| 1662 (interactive "BCopy to buffer: \nr") | |
| 1663 (let ((oldbuf (current-buffer))) | |
| 1664 (save-excursion | |
| 1665 (set-buffer (get-buffer-create buffer)) | |
| 1666 (erase-buffer) | |
| 1667 (save-excursion | |
| 1668 (insert-buffer-substring oldbuf start end))))) | |
| 1669 | |
| 1670 ;FSFmacs | |
| 1671 ;(put 'mark-inactive 'error-conditions '(mark-inactive error)) | |
| 1672 ;(put 'mark-inactive 'error-message "The mark is not active now") | |
| 1673 | |
| 1674 (defun mark (&optional force buffer) | |
| 1675 "Return this buffer's mark value as integer, or nil if no mark. | |
| 1676 | |
| 1677 If `zmacs-regions' is true, then this returns nil unless the region is | |
| 1678 currently in the active (highlighted) state. With an argument of t, this | |
| 1679 returns the mark (if there is one) regardless of the active-region state. | |
| 1680 You should *generally* not use the mark unless the region is active, if | |
| 1681 the user has expressed a preference for the active-region model. | |
| 1682 | |
| 1683 If you are using this in an editing command, you are most likely making | |
| 1684 a mistake; see the documentation of `set-mark'." | |
| 1685 (setq buffer (decode-buffer buffer)) | |
| 1686 ;FSFmacs version: | |
| 1687 ; (if (or force (not transient-mark-mode) mark-active mark-even-if-inactive) | |
| 1688 ; (marker-position (mark-marker)) | |
| 1689 ; (signal 'mark-inactive nil))) | |
| 1690 (let ((m (mark-marker force buffer))) | |
| 1691 (and m (marker-position m)))) | |
| 1692 | |
| 1693 ;;;#### FSFmacs | |
| 1694 ;;; Many places set mark-active directly, and several of them failed to also | |
| 1695 ;;; run deactivate-mark-hook. This shorthand should simplify. | |
| 1696 ;(defsubst deactivate-mark () | |
| 1697 ; "Deactivate the mark by setting `mark-active' to nil. | |
| 1698 ;\(That makes a difference only in Transient Mark mode.) | |
| 1699 ;Also runs the hook `deactivate-mark-hook'." | |
| 1700 ; (if transient-mark-mode | |
| 1701 ; (progn | |
| 1702 ; (setq mark-active nil) | |
| 1703 ; (run-hooks 'deactivate-mark-hook)))) | |
| 1704 | |
| 1705 (defun set-mark (pos &optional buffer) | |
| 1706 "Set this buffer's mark to POS. Don't use this function! | |
| 1707 That is to say, don't use this function unless you want | |
| 1708 the user to see that the mark has moved, and you want the previous | |
| 1709 mark position to be lost. | |
| 1710 | |
| 1711 Normally, when a new mark is set, the old one should go on the stack. | |
| 444 | 1712 This is why most applications should use `push-mark', not `set-mark'. |
| 428 | 1713 |
| 1714 Novice Emacs Lisp programmers often try to use the mark for the wrong | |
| 1715 purposes. The mark saves a location for the user's convenience. | |
| 1716 Most editing commands should not alter the mark. | |
| 1717 To remember a location for internal use in the Lisp program, | |
| 1718 store it in a Lisp variable. Example: | |
| 1719 | |
| 444 | 1720 (let ((start (point))) (forward-line 1) (delete-region start (point)))." |
| 428 | 1721 |
| 1722 (setq buffer (decode-buffer buffer)) | |
| 1723 (set-marker (mark-marker t buffer) pos buffer)) | |
| 1724 ;; FSF | |
| 1725 ; (if pos | |
| 1726 ; (progn | |
| 1727 ; (setq mark-active t) | |
| 1728 ; (run-hooks 'activate-mark-hook) | |
| 1729 ; (set-marker (mark-marker) pos (current-buffer))) | |
| 1730 ; ;; Normally we never clear mark-active except in Transient Mark mode. | |
| 1731 ; ;; But when we actually clear out the mark value too, | |
| 1732 ; ;; we must clear mark-active in any mode. | |
| 1733 ; (setq mark-active nil) | |
| 1734 ; (run-hooks 'deactivate-mark-hook) | |
| 1735 ; (set-marker (mark-marker) nil))) | |
| 1736 | |
| 1737 (defvar mark-ring nil | |
| 442 | 1738 "The list of former marks of the current buffer, most recent first. |
| 1739 This variable is automatically buffer-local.") | |
| 428 | 1740 (make-variable-buffer-local 'mark-ring) |
| 1741 (put 'mark-ring 'permanent-local t) | |
| 1742 | |
| 442 | 1743 (defvar dont-record-current-mark nil |
| 1744 "If set to t, the current mark value should not be recorded on the mark ring. | |
| 1745 This is set by commands that manipulate the mark incidentally, to avoid | |
| 1746 cluttering the mark ring unnecessarily. Under most circumstances, you do | |
| 1747 not need to set this directly; it is automatically reset each time | |
| 1748 `push-mark' is called, according to `mark-ring-unrecorded-commands'. This | |
| 1749 variable is automatically buffer-local.") | |
| 1750 (make-variable-buffer-local 'dont-record-current-mark) | |
| 1751 (put 'dont-record-current-mark 'permanent-local t) | |
| 1752 | |
| 1753 ;; a conspiracy between push-mark and handle-pre-motion-command | |
| 1754 (defvar in-shifted-motion-command nil) | |
| 1755 | |
| 1756 (defcustom mark-ring-unrecorded-commands '(shifted-motion-commands | |
| 1757 yank | |
| 1758 mark-beginning-of-buffer | |
| 1759 mark-bob | |
| 1760 mark-defun | |
| 1761 mark-end-of-buffer | |
| 1762 mark-end-of-line | |
| 1763 mark-end-of-sentence | |
| 1764 mark-eob | |
| 1765 mark-marker | |
| 1766 mark-page | |
| 1767 mark-paragraph | |
| 1768 mark-sexp | |
| 1769 mark-whole-buffer | |
| 1770 mark-word) | |
| 1771 "*List of commands whose marks should not be recorded on the mark stack. | |
| 1772 Many commands set the mark as part of their action. Normally, all such | |
| 1773 marks get recorded onto the mark stack. However, this tends to clutter up | |
| 1774 the mark stack unnecessarily. You can control this by putting a command | |
| 1775 onto this list. Then, any marks set by the function will not be recorded. | |
| 1776 | |
| 1777 The special value `shifted-motion-commands' causes marks set as a result | |
| 1778 of selection using any shifted motion commands to not be recorded. | |
| 1779 | |
| 1780 The value `yank' affects all yank-like commands, as well as just `yank'." | |
| 1781 :type '(repeat (choice (const :tag "shifted motion commands" | |
| 462 | 1782 shifted-motion-commands) |
| 442 | 1783 (const :tag "functions that select text" |
| 1784 :inline t | |
| 462 | 1785 (mark-beginning-of-buffer |
| 1786 mark-bob | |
| 1787 mark-defun | |
| 1788 mark-end-of-buffer | |
| 1789 mark-end-of-line | |
| 1790 mark-end-of-sentence | |
| 1791 mark-eob | |
| 1792 mark-marker | |
| 1793 mark-page | |
| 1794 mark-paragraph | |
| 1795 mark-sexp | |
| 1796 mark-whole-buffer | |
| 1797 mark-word)) | |
| 442 | 1798 (const :tag "functions that paste text" |
| 462 | 1799 yank) |
| 442 | 1800 function)) |
| 1801 :group 'killing) | |
| 1802 | |
| 428 | 1803 (defcustom mark-ring-max 16 |
| 1804 "*Maximum size of mark ring. Start discarding off end if gets this big." | |
| 1805 :type 'integer | |
| 1806 :group 'killing) | |
| 1807 | |
| 1808 (defvar global-mark-ring nil | |
| 1809 "The list of saved global marks, most recent first.") | |
| 1810 | |
| 1811 (defcustom global-mark-ring-max 16 | |
| 1812 "*Maximum size of global mark ring. \ | |
| 1813 Start discarding off end if gets this big." | |
| 1814 :type 'integer | |
| 1815 :group 'killing) | |
| 1816 | |
| 1817 (defun set-mark-command (arg) | |
| 1818 "Set mark at where point is, or jump to mark. | |
| 1819 With no prefix argument, set mark, push old mark position on local mark | |
| 1820 ring, and push mark on global mark ring. | |
| 1821 With argument, jump to mark, and pop a new position for mark off the ring | |
| 1822 \(does not affect global mark ring\). | |
| 1823 | |
| 442 | 1824 The mark ring is a per-buffer stack of marks, most recent first. Its |
| 1825 maximum length is controlled by `mark-ring-max'. Generally, when new | |
| 1826 marks are set, the current mark is pushed onto the stack. You can pop | |
| 1827 marks off the stack using \\[universal-argument] \\[set-mark-command]. The term \"ring\" is used because when | |
| 1828 you pop a mark off the stack, the current mark value is pushed onto the | |
| 1829 far end of the stack. If this is confusing, just think of the mark ring | |
| 1830 as a stack. | |
| 1831 | |
| 428 | 1832 Novice Emacs Lisp programmers often try to use the mark for the wrong |
| 1833 purposes. See the documentation of `set-mark' for more information." | |
| 1834 (interactive "P") | |
| 1835 (if (null arg) | |
| 1836 (push-mark nil nil t) | |
| 1837 (if (null (mark t)) | |
| 1838 (error "No mark set in this buffer") | |
| 442 | 1839 (if dont-record-current-mark (pop-mark)) |
| 428 | 1840 (goto-char (mark t)) |
| 1841 (pop-mark)))) | |
| 1842 | |
| 1843 ;; XEmacs: Extra parameter | |
| 1844 (defun push-mark (&optional location nomsg activate-region buffer) | |
| 1845 "Set mark at LOCATION (point, by default) and push old mark on mark ring. | |
| 1846 If the last global mark pushed was not in the current buffer, | |
| 1847 also push LOCATION on the global mark ring. | |
| 1848 Display `Mark set' unless the optional second arg NOMSG is non-nil. | |
| 1849 Activate mark if optional third arg ACTIVATE-REGION non-nil. | |
| 1850 | |
| 1851 Novice Emacs Lisp programmers often try to use the mark for the wrong | |
| 1852 purposes. See the documentation of `set-mark' for more information." | |
| 1853 (setq buffer (decode-buffer buffer)) ; XEmacs | |
| 442 | 1854 (if (or dont-record-current-mark (null (mark t buffer))) ; XEmacs |
| 428 | 1855 nil |
| 1856 ;; The save-excursion / set-buffer is necessary because mark-ring | |
| 1857 ;; is a buffer local variable | |
| 1858 (save-excursion | |
| 1859 (set-buffer buffer) | |
| 1860 (setq mark-ring (cons (copy-marker (mark-marker t buffer)) mark-ring)) | |
| 1861 (if (> (length mark-ring) mark-ring-max) | |
| 1862 (progn | |
| 1863 (move-marker (car (nthcdr mark-ring-max mark-ring)) nil buffer) | |
| 1864 (setcdr (nthcdr (1- mark-ring-max) mark-ring) nil))))) | |
| 1865 (set-mark (or location (point buffer)) buffer) | |
| 1866 ; (set-marker (mark-marker) (or location (point)) (current-buffer)) ; FSF | |
| 1867 ;; Now push the mark on the global mark ring. | |
| 442 | 1868 (if (and (not dont-record-current-mark) |
| 1869 (or (null global-mark-ring) | |
| 1870 (not (eq (marker-buffer (car global-mark-ring)) buffer)))) | |
| 428 | 1871 ;; The last global mark pushed wasn't in this same buffer. |
| 1872 (progn | |
| 1873 (setq global-mark-ring (cons (copy-marker (mark-marker t buffer)) | |
| 1874 global-mark-ring)) | |
| 1875 (if (> (length global-mark-ring) global-mark-ring-max) | |
| 1876 (progn | |
| 1877 (move-marker (car (nthcdr global-mark-ring-max global-mark-ring)) | |
| 1878 nil buffer) | |
| 1879 (setcdr (nthcdr (1- global-mark-ring-max) global-mark-ring) nil))))) | |
| 442 | 1880 (setq dont-record-current-mark |
| 1881 (not (not (or (and in-shifted-motion-command | |
| 1882 (memq 'shifted-motion-commands | |
| 1883 mark-ring-unrecorded-commands)) | |
| 1884 (memq this-command mark-ring-unrecorded-commands))))) | |
| 1885 (or dont-record-current-mark nomsg executing-kbd-macro | |
| 1886 (> (minibuffer-depth) 0) | |
| 428 | 1887 (display-message 'command "Mark set")) |
| 1888 (if activate-region | |
| 1889 (progn | |
| 1890 (setq zmacs-region-stays t) | |
| 1891 (zmacs-activate-region))) | |
| 1892 ; (if (or activate (not transient-mark-mode)) ; FSF | |
| 1893 ; (set-mark (mark t))) ; FSF | |
| 1894 nil) | |
| 1895 | |
| 1896 (defun pop-mark () | |
| 1897 "Pop off mark ring into the buffer's actual mark. | |
| 1898 Does not set point. Does nothing if mark ring is empty." | |
| 1899 (if mark-ring | |
| 1900 (progn | |
| 1901 (setq mark-ring (nconc mark-ring (list (copy-marker (mark-marker t))))) | |
| 1902 (set-mark (car mark-ring)) | |
| 1903 (move-marker (car mark-ring) nil) | |
| 1904 (if (null (mark t)) (ding)) | |
| 1905 (setq mark-ring (cdr mark-ring))))) | |
| 1906 | |
| 1907 (define-function 'exchange-dot-and-mark 'exchange-point-and-mark) | |
| 1908 (defun exchange-point-and-mark (&optional dont-activate-region) | |
| 1909 "Put the mark where point is now, and point where the mark is now. | |
| 1910 The mark is activated unless DONT-ACTIVATE-REGION is non-nil." | |
| 1911 (interactive nil) | |
| 1912 (let ((omark (mark t))) | |
| 1913 (if (null omark) | |
| 1914 (error "No mark set in this buffer")) | |
| 1915 (set-mark (point)) | |
| 1916 (goto-char omark) | |
| 1917 (or dont-activate-region (zmacs-activate-region)) ; XEmacs | |
| 1918 nil)) | |
| 1919 | |
| 1920 ;; XEmacs | |
| 1921 (defun mark-something (mark-fn movement-fn arg) | |
| 1922 "internal function used by mark-sexp, mark-word, etc." | |
| 1923 (let (newmark (pushp t)) | |
| 1924 (save-excursion | |
| 1925 (if (and (eq last-command mark-fn) (mark)) | |
| 1926 ;; Extend the previous state in the same direction: | |
| 1927 (progn | |
| 1928 (if (< (mark) (point)) (setq arg (- arg))) | |
| 1929 (goto-char (mark)) | |
| 1930 (setq pushp nil))) | |
| 1931 (funcall movement-fn arg) | |
| 1932 (setq newmark (point))) | |
| 1933 (if pushp | |
| 1934 (push-mark newmark nil t) | |
| 1935 ;; Do not mess with the mark stack, but merely adjust the previous state: | |
| 1936 (set-mark newmark) | |
| 1937 (activate-region)))) | |
| 1938 | |
| 1939 ;(defun transient-mark-mode (arg) | |
| 1940 ; "Toggle Transient Mark mode. | |
| 1941 ;With arg, turn Transient Mark mode on if arg is positive, off otherwise. | |
| 1942 ; | |
| 1943 ;In Transient Mark mode, when the mark is active, the region is highlighted. | |
| 1944 ;Changing the buffer \"deactivates\" the mark. | |
| 1945 ;So do certain other operations that set the mark | |
| 1946 ;but whose main purpose is something else--for example, | |
| 1947 ;incremental search, \\[beginning-of-buffer], and \\[end-of-buffer]." | |
| 1948 ; (interactive "P") | |
| 1949 ; (setq transient-mark-mode | |
| 1950 ; (if (null arg) | |
| 1951 ; (not transient-mark-mode) | |
| 1952 ; (> (prefix-numeric-value arg) 0)))) | |
| 1953 | |
| 1954 (defun pop-global-mark () | |
| 1955 "Pop off global mark ring and jump to the top location." | |
| 1956 (interactive) | |
| 1957 ;; Pop entries which refer to non-existent buffers. | |
| 1958 (while (and global-mark-ring (not (marker-buffer (car global-mark-ring)))) | |
| 1959 (setq global-mark-ring (cdr global-mark-ring))) | |
| 1960 (or global-mark-ring | |
| 1961 (error "No global mark set")) | |
| 1962 (let* ((marker (car global-mark-ring)) | |
| 1963 (buffer (marker-buffer marker)) | |
| 1964 (position (marker-position marker))) | |
| 1965 (setq global-mark-ring (nconc (cdr global-mark-ring) | |
| 1966 (list (car global-mark-ring)))) | |
| 1967 (set-buffer buffer) | |
| 1968 (or (and (>= position (point-min)) | |
| 1969 (<= position (point-max))) | |
| 1970 (widen)) | |
| 1971 (goto-char position) | |
| 1972 (switch-to-buffer buffer))) | |
| 1973 | |
| 1974 | |
| 1975 (defcustom signal-error-on-buffer-boundary t | |
| 462 | 1976 "*If Non-nil, beep or signal an error when moving past buffer boundary. |
| 428 | 1977 The commands that honor this variable are |
| 1978 | |
| 1979 forward-char-command | |
| 1980 backward-char-command | |
| 1981 next-line | |
| 1982 previous-line | |
| 1983 scroll-up-command | |
| 1984 scroll-down-command" | |
| 1985 :type 'boolean | |
| 1986 :group 'editing-basics) | |
| 1987 | |
| 3361 | 1988 (defcustom next-line-add-newlines nil |
| 428 | 1989 "*If non-nil, `next-line' inserts newline when the point is at end of buffer. |
| 3361 | 1990 This behavior used to be the default, but is now considered an unnecessary and |
| 1991 unwanted side-effect." | |
| 428 | 1992 :type 'boolean |
| 1993 :group 'editing-basics) | |
| 1994 | |
| 442 | 1995 (defcustom shifted-motion-keys-select-region t |
| 1996 "*If non-nil, shifted motion keys select text, like in MS Windows. | |
| 462 | 1997 |
| 1998 More specifically, if a keystroke that matches one of the key | |
| 1999 specifications in `motion-keys-for-shifted-motion' is pressed along | |
| 2000 with the Shift key, and the command invoked moves the cursor and | |
| 2001 preserves the active region (see `zmacs-region-stays'), the | |
| 2002 intervening text will be added to the active region. | |
| 2003 | |
| 2004 When the region has been enabled or augmented as a result of a shifted | |
| 2005 motion key, an unshifted motion key will normally deselect the region. | |
| 2485 | 2006 However, if `unshifted-motion-keys-deselect-region' is nil, the region |
| 462 | 2007 will remain active, augmented by the characters moved over by this |
| 2008 motion key. | |
| 2009 | |
| 2010 This functionality is specifically interpreted in terms of keys, and | |
| 2011 *NOT* in terms of particular commands, because that produces the most | |
| 2012 intuitive behavior: `forward-char' will work with shifted motion | |
| 2013 when invoked by `right' but not `C-f', and user-written motion commands | |
| 2014 bound to motion keys will automatically work with shifted motion." | |
| 442 | 2015 :type 'boolean |
| 2016 :group 'editing-basics) | |
| 2017 | |
| 2018 (defcustom unshifted-motion-keys-deselect-region t | |
| 2019 "*If non-nil, unshifted motion keys deselect a shifted-motion region. | |
| 462 | 2020 This only occurs after a region has been selected or augmented using |
| 2021 shifted motion keys (not when using the traditional set-mark-then-move | |
| 2022 method), and has no effect if `shifted-motion-keys-select-region' is | |
| 2023 nil." | |
| 442 | 2024 :type 'boolean |
| 2025 :group 'editing-basics) | |
| 2026 | |
| 462 | 2027 (defcustom motion-keys-for-shifted-motion |
| 1261 | 2028 ;; meta-shift-home/end are NOT shifted motion commands. |
| 2029 '(left right up down (home) (control home) (meta control home) | |
| 2030 (end) (control end) (meta control end) prior next | |
| 2031 kp-left kp-right kp-up kp-down (kp-home) (control kp-home) | |
| 2032 (meta control kp-home) (kp-end) (control kp-end) (meta control kp-end) | |
| 2033 kp-prior kp-next) | |
| 462 | 2034 "*List of keys considered motion keys for the purpose of shifted selection. |
| 2035 When one of these keys is pressed along with the Shift key, and the | |
| 2036 command invoked moves the cursor and preserves the active region (see | |
| 2037 `zmacs-region-stays'), the intervening text will be added to the active | |
| 2038 region. See `shifted-motion-keys-select-region' for more details. | |
| 2039 | |
| 2040 Each entry should be a keysym or a list (MODIFIERS ... KEYSYM), | |
| 2041 i.e. zero or more modifiers followed by a keysym. When a keysym alone | |
| 2042 is given, a keystroke consisting of that keysym, with or without any | |
| 2043 modifiers, is considered a motion key. When the list form is given, | |
| 2044 only a keystroke with exactly those modifiers and no others (with the | |
| 2045 exception of the Shift key) is considered a motion key. | |
| 2046 | |
| 2047 NOTE: Currently, the keysym cannot be a non-alphabetic character key | |
| 2048 such as the `=/+' key. In any case, the shifted-motion paradigm does | |
| 2049 not make much sense with those keys. The keysym can, however, be an | |
| 2050 alphabetic key without problem, and you can specify the key using | |
| 2051 either a character or a symbol, uppercase or lowercase." | |
| 2052 :type '(repeat (choice (const :tag "normal cursor-pad (\"gray\") keys" | |
| 2053 :inline t | |
| 1261 | 2054 (left |
| 2055 right up down | |
| 2056 (home) (control home) (meta control home) | |
| 2057 (end) (control end) (meta control end) | |
| 2058 prior next)) | |
| 462 | 2059 (const :tag "keypad motion keys" |
| 2060 :inline t | |
| 1261 | 2061 (kp-left |
| 2062 kp-right kp-up kp-down | |
| 2063 (kp-home) (control kp-home) | |
| 2064 (meta control kp-home) | |
| 2065 (kp-end) (control kp-end) | |
| 2066 (meta control kp-end) | |
| 2067 kp-prior kp-next)) | |
| 462 | 2068 (const :tag "alphabetic motion keys" |
| 2069 :inline t | |
| 2070 ((control b) (control f) | |
| 2071 (control p) (control n) | |
| 2072 (control a) (control e) | |
| 2073 (control v) (meta v) | |
| 2074 (meta b) (meta f) | |
| 2075 (meta a) (meta e) | |
| 2076 (meta m) ; back-to-indentation | |
| 2077 (meta r) ; move-to-window-line | |
| 2078 (meta control b) (meta control f) | |
| 2079 (meta control p) (meta control n) | |
| 2080 (meta control a) (meta control e) | |
| 2081 (meta control d) ;; down-list | |
| 2082 (meta control u) ;; backward-up-list | |
| 2083 )) | |
| 2084 symbol)) | |
| 2085 :group 'editing-basics) | |
| 2086 | |
| 442 | 2087 (defun handle-pre-motion-command-current-command-is-motion () |
| 2088 (and (key-press-event-p last-input-event) | |
|
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2089 (macrolet |
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2090 ((keysyms-equal (&rest args) |
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2091 `((lambda (a b) |
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2092 (when (and |
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2093 ;; As of now, none of the elements of |
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2094 ;; motion-keys-for-shifted-motion are non-symbols; |
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2095 ;; this redundant check saves a few hundred |
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2096 ;; funcalls on startup. |
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2097 (not (symbolp b)) |
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2098 (characterp b)) |
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2099 (setf (car char-list) b |
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2100 b (intern (concat char-list nil)))) |
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2101 (eq a b)) |
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2102 ,@args))) |
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2103 (loop |
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2104 for keysym in motion-keys-for-shifted-motion |
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2105 with key = (event-key last-input-event) |
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2106 with mods = (delq 'shift (event-modifiers last-input-event)) |
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2107 with char-list = '(?a) ;; Some random character; the list will be |
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2108 ;; modified in the constants vector over |
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2109 ;; time. |
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2110 initially (if (and (not (symbolp key)) (characterp key)) |
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2111 (setf (car char-list) key |
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2112 key (intern (concat char-list nil)))) |
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2113 thereis (if (listp keysym) |
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2114 (and (equal mods (butlast keysym)) |
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2115 (keysyms-equal |
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2116 key (car (last keysym)))) |
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2117 (keysyms-equal key keysym)))))) |
| 444 | 2118 |
| 442 | 2119 (defun handle-pre-motion-command () |
| 462 | 2120 (if (and |
| 442 | 2121 (handle-pre-motion-command-current-command-is-motion) |
| 2122 zmacs-regions | |
| 2123 shifted-motion-keys-select-region | |
| 2124 (not (region-active-p)) | |
| 462 | 2125 ;; Special-case alphabetic keysyms, because the `shift' |
| 2126 ;; modifier does not appear on them. (Unfortunately, we have no | |
| 2127 ;; way of determining Shift-key status on non-alphabetic ASCII | |
| 2128 ;; keysyms. However, in this case, using Shift will invoke a | |
| 2129 ;; separate command from the non-shifted version, so the | |
| 2130 ;; "shifted motion" paradigm makes no sense.) | |
| 2131 (or (memq 'shift (event-modifiers last-input-event)) | |
| 2132 (let ((key (event-key last-input-event))) | |
| 2133 (and (characterp key) | |
| 2134 (not (eq key (downcase key))))))) | |
| 442 | 2135 (let ((in-shifted-motion-command t)) |
| 2136 (push-mark nil nil t)))) | |
| 2137 | |
| 2138 (defun handle-post-motion-command () | |
| 2139 (if | |
| 2140 (and | |
| 2141 (handle-pre-motion-command-current-command-is-motion) | |
| 2142 zmacs-regions | |
| 2143 (region-active-p)) | |
| 462 | 2144 ;; Special-case alphabetic keysyms, because the `shift' |
| 2145 ;; modifier does not appear on them. See above. | |
| 2146 (cond ((or (memq 'shift (event-modifiers last-input-event)) | |
| 2147 (let ((key (event-key last-input-event))) | |
| 2148 (and (characterp key) | |
| 2149 (not (eq key (downcase key)))))) | |
| 442 | 2150 (if shifted-motion-keys-select-region |
| 2151 (putf this-command-properties 'shifted-motion-command t)) | |
| 2152 (setq zmacs-region-stays t)) | |
| 2153 ((and (getf last-command-properties 'shifted-motion-command) | |
| 2154 unshifted-motion-keys-deselect-region) | |
| 487 | 2155 (setq zmacs-region-stays nil))))) |
| 442 | 2156 |
| 428 | 2157 (defun forward-char-command (&optional arg buffer) |
| 2158 "Move point right ARG characters (left if ARG negative) in BUFFER. | |
| 2159 On attempt to pass end of buffer, stop and signal `end-of-buffer'. | |
| 2160 On attempt to pass beginning of buffer, stop and signal `beginning-of-buffer'. | |
| 2161 Error signaling is suppressed if `signal-error-on-buffer-boundary' | |
| 462 | 2162 is nil. If BUFFER is nil, the current buffer is assumed. |
| 2163 | |
| 2164 The characters that are moved over may be added to the current selection | |
| 2165 \(i.e. active region) if the Shift key is held down, a motion key is used | |
| 2166 to invoke this command, and `shifted-motion-keys-select-region' is t; see | |
| 2167 the documentation for this variable for more details." | |
| 428 | 2168 (interactive "_p") |
| 2169 (if signal-error-on-buffer-boundary | |
| 2170 (forward-char arg buffer) | |
| 2171 (condition-case nil | |
| 2172 (forward-char arg buffer) | |
| 2173 (beginning-of-buffer nil) | |
| 2174 (end-of-buffer nil)))) | |
| 2175 | |
| 2176 (defun backward-char-command (&optional arg buffer) | |
| 2177 "Move point left ARG characters (right if ARG negative) in BUFFER. | |
| 2178 On attempt to pass end of buffer, stop and signal `end-of-buffer'. | |
| 2179 On attempt to pass beginning of buffer, stop and signal `beginning-of-buffer'. | |
| 2180 Error signaling is suppressed if `signal-error-on-buffer-boundary' | |
| 462 | 2181 is nil. If BUFFER is nil, the current buffer is assumed. |
| 2182 | |
| 2183 The characters that are moved over may be added to the current selection | |
| 2184 \(i.e. active region) if the Shift key is held down, a motion key is used | |
| 2185 to invoke this command, and `shifted-motion-keys-select-region' is t; see | |
| 2186 the documentation for this variable for more details." | |
| 428 | 2187 (interactive "_p") |
| 2188 (if signal-error-on-buffer-boundary | |
| 2189 (backward-char arg buffer) | |
| 2190 (condition-case nil | |
| 2191 (backward-char arg buffer) | |
| 2192 (beginning-of-buffer nil) | |
| 2193 (end-of-buffer nil)))) | |
| 2194 | |
| 442 | 2195 (defun scroll-up-one () |
| 2196 "Scroll text of current window upward one line. | |
| 2197 On attempt to scroll past end of buffer, `end-of-buffer' is signaled. | |
| 2198 On attempt to scroll past beginning of buffer, `beginning-of-buffer' is | |
| 2199 signaled. | |
| 2200 | |
| 2201 If `signal-error-on-buffer-boundary' is nil, attempts to scroll past buffer | |
| 2202 boundaries do not cause an error to be signaled." | |
| 2203 (interactive "_") | |
| 2204 (scroll-up-command 1)) | |
| 2205 | |
| 428 | 2206 (defun scroll-up-command (&optional n) |
| 444 | 2207 "Scroll current window upward N lines; or near full screen if N is nil. |
| 428 | 2208 A near full screen is `next-screen-context-lines' less than a full screen. |
| 444 | 2209 Negative N means scroll downward. |
| 428 | 2210 When calling from a program, supply a number as argument or nil. |
| 2211 On attempt to scroll past end of buffer, `end-of-buffer' is signaled. | |
| 2212 On attempt to scroll past beginning of buffer, `beginning-of-buffer' is | |
| 2213 signaled. | |
| 2214 | |
| 462 | 2215 The characters that are moved over may be added to the current selection |
| 2216 \(i.e. active region) if the Shift key is held down, a motion key is used | |
| 2217 to invoke this command, and `shifted-motion-keys-select-region' is t; see | |
| 2218 the documentation for this variable for more details. | |
| 2219 | |
| 428 | 2220 If `signal-error-on-buffer-boundary' is nil, attempts to scroll past buffer |
| 2221 boundaries do not cause an error to be signaled." | |
| 2222 (interactive "_P") | |
| 2223 (if signal-error-on-buffer-boundary | |
| 2224 (scroll-up n) | |
| 2225 (condition-case nil | |
| 2226 (scroll-up n) | |
| 2227 (beginning-of-buffer nil) | |
| 2228 (end-of-buffer nil)))) | |
| 2229 | |
| 442 | 2230 (defun scroll-down-one () |
| 2231 "Scroll text of current window downward one line. | |
| 2232 On attempt to scroll past end of buffer, `end-of-buffer' is signaled. | |
| 2233 On attempt to scroll past beginning of buffer, `beginning-of-buffer' is | |
| 2234 signaled. | |
| 2235 | |
| 2236 If `signal-error-on-buffer-boundary' is nil, attempts to scroll past buffer | |
| 2237 boundaries do not cause an error to be signaled." | |
| 2238 (interactive "_") | |
| 2239 (scroll-down-command 1)) | |
| 2240 | |
| 428 | 2241 (defun scroll-down-command (&optional n) |
| 444 | 2242 "Scroll current window downward N lines; or near full screen if N is nil. |
| 428 | 2243 A near full screen is `next-screen-context-lines' less than a full screen. |
| 444 | 2244 Negative N means scroll upward. |
| 428 | 2245 When calling from a program, supply a number as argument or nil. |
| 2246 On attempt to scroll past end of buffer, `end-of-buffer' is signaled. | |
| 2247 On attempt to scroll past beginning of buffer, `beginning-of-buffer' is | |
| 2248 signaled. | |
| 2249 | |
| 2250 If `signal-error-on-buffer-boundary' is nil, attempts to scroll past buffer | |
| 462 | 2251 boundaries do not cause an error to be signaled. |
| 2252 | |
| 2253 The characters that are moved over may be added to the current selection | |
| 2254 \(i.e. active region) if the Shift key is held down, a motion key is used | |
| 2255 to invoke this command, and `shifted-motion-keys-select-region' is t; see | |
| 2256 the documentation for this variable for more details." | |
| 428 | 2257 (interactive "_P") |
| 2258 (if signal-error-on-buffer-boundary | |
| 2259 (scroll-down n) | |
| 2260 (condition-case nil | |
| 2261 (scroll-down n) | |
| 2262 (beginning-of-buffer nil) | |
| 2263 (end-of-buffer nil)))) | |
| 2264 | |
| 444 | 2265 (defun next-line (count) |
| 2266 "Move cursor vertically down COUNT lines. | |
| 428 | 2267 If there is no character in the target line exactly under the current column, |
| 2268 the cursor is positioned after the character in that line which spans this | |
| 2269 column, or at the end of the line if it is not long enough. | |
| 2270 | |
| 2271 If there is no line in the buffer after this one, behavior depends on the | |
| 2272 value of `next-line-add-newlines'. If non-nil, it inserts a newline character | |
| 2273 to create a line, and moves the cursor to that line. Otherwise it moves the | |
| 2439 | 2274 cursor to the end of the buffer. If `signal-error-on-buffer-boundary' is |
| 2275 non-nil and you attempt to move past a buffer boundary, XEmacs will ring the | |
| 2276 bell using `ding'. | |
| 428 | 2277 |
| 2278 The command \\[set-goal-column] can be used to create | |
| 2279 a semipermanent goal column to which this command always moves. | |
| 2280 Then it does not try to move vertically. This goal column is stored | |
| 2281 in `goal-column', which is nil when there is none. | |
| 2282 | |
| 462 | 2283 The characters that are moved over may be added to the current selection |
| 2284 \(i.e. active region) if the Shift key is held down, a motion key is used | |
| 2285 to invoke this command, and `shifted-motion-keys-select-region' is t; see | |
| 2286 the documentation for this variable for more details. | |
| 2287 | |
| 428 | 2288 If you are thinking of using this in a Lisp program, consider |
| 2289 using `forward-line' instead. It is usually easier to use | |
| 2290 and more reliable (no dependence on goal column, etc.)." | |
| 442 | 2291 (interactive "_p") |
| 444 | 2292 (if (and next-line-add-newlines (= count 1)) |
| 428 | 2293 (let ((opoint (point))) |
| 2294 (end-of-line) | |
| 2295 (if (eobp) | |
| 2296 (newline 1) | |
| 2297 (goto-char opoint) | |
| 444 | 2298 (line-move count))) |
| 428 | 2299 (if (interactive-p) |
| 2300 ;; XEmacs: Not sure what to do about this. It's inconsistent. -sb | |
| 2301 (condition-case nil | |
| 444 | 2302 (line-move count) |
| 428 | 2303 ((beginning-of-buffer end-of-buffer) |
| 2304 (when signal-error-on-buffer-boundary | |
| 2305 (ding nil 'buffer-bound)))) | |
| 444 | 2306 (line-move count))) |
| 428 | 2307 nil) |
| 2308 | |
| 444 | 2309 (defun previous-line (count) |
| 2310 "Move cursor vertically up COUNT lines. | |
| 428 | 2311 If there is no character in the target line exactly over the current column, |
| 2312 the cursor is positioned after the character in that line which spans this | |
| 2313 column, or at the end of the line if it is not long enough. | |
| 2314 | |
| 2315 The command \\[set-goal-column] can be used to create | |
| 2316 a semipermanent goal column to which this command always moves. | |
| 2317 Then it does not try to move vertically. | |
| 2318 | |
| 462 | 2319 The characters that are moved over may be added to the current selection |
| 2320 \(i.e. active region) if the Shift key is held down, a motion key is used | |
| 2321 to invoke this command, and `shifted-motion-keys-select-region' is t; see | |
| 2322 the documentation for this variable for more details. | |
| 2323 | |
| 2439 | 2324 If `signal-error-on-buffer-boundary' is non-nil and you attempt to move past |
| 2325 a buffer boundary, XEmacs will ring the bell using `ding'. | |
| 2326 | |
| 428 | 2327 If you are thinking of using this in a Lisp program, consider using |
| 2328 `forward-line' with a negative argument instead. It is usually easier | |
| 2329 to use and more reliable (no dependence on goal column, etc.)." | |
| 442 | 2330 (interactive "_p") |
| 428 | 2331 (if (interactive-p) |
| 2332 (condition-case nil | |
| 444 | 2333 (line-move (- count)) |
| 428 | 2334 ((beginning-of-buffer end-of-buffer) |
| 2335 (when signal-error-on-buffer-boundary ; XEmacs | |
| 2336 (ding nil 'buffer-bound)))) | |
| 444 | 2337 (line-move (- count))) |
| 428 | 2338 nil) |
| 2339 | |
| 442 | 2340 (defcustom block-movement-size 6 |
| 2341 "*Number of lines that \"block movement\" commands (\\[forward-block-of-lines], \\[backward-block-of-lines]) move by." | |
| 2342 :type 'integer | |
| 2343 :group 'editing-basics) | |
| 2344 | |
| 2345 (defun backward-block-of-lines () | |
| 2346 "Move backward by one \"block\" of lines. | |
| 2347 The number of lines that make up a block is controlled by | |
| 462 | 2348 `block-movement-size', which defaults to 6. |
| 2349 | |
| 2350 The characters that are moved over may be added to the current selection | |
| 2351 \(i.e. active region) if the Shift key is held down, a motion key is used | |
| 2352 to invoke this command, and `shifted-motion-keys-select-region' is t; see | |
| 2353 the documentation for this variable for more details." | |
| 442 | 2354 (interactive "_") |
| 2355 (forward-line (- block-movement-size))) | |
| 2356 | |
| 2357 (defun forward-block-of-lines () | |
| 2358 "Move forward by one \"block\" of lines. | |
| 2359 The number of lines that make up a block is controlled by | |
| 462 | 2360 `block-movement-size', which defaults to 6. |
| 2361 | |
| 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." | |
| 442 | 2366 (interactive "_") |
| 2367 (forward-line block-movement-size)) | |
| 2368 | |
| 428 | 2369 (defcustom track-eol nil |
| 2370 "*Non-nil means vertical motion starting at end of line keeps to ends of lines. | |
| 2371 This means moving to the end of each line moved onto. | |
| 2372 The beginning of a blank line does not count as the end of a line." | |
| 2373 :type 'boolean | |
| 2374 :group 'editing-basics) | |
| 2375 | |
| 2376 (defcustom goal-column nil | |
| 2377 "*Semipermanent goal column for vertical motion, as set by \\[set-goal-column], or nil." | |
| 2378 :type '(choice integer (const :tag "None" nil)) | |
| 2379 :group 'editing-basics) | |
| 2380 (make-variable-buffer-local 'goal-column) | |
| 2381 | |
| 2382 (defvar temporary-goal-column 0 | |
| 2383 "Current goal column for vertical motion. | |
| 2384 It is the column where point was | |
| 2385 at the start of current run of vertical motion commands. | |
| 2386 When the `track-eol' feature is doing its job, the value is 9999.") | |
| 2387 (make-variable-buffer-local 'temporary-goal-column) | |
| 2388 | |
| 2389 ;XEmacs: not yet ported, so avoid compiler warnings | |
| 2390 (eval-when-compile | |
| 2391 (defvar inhibit-point-motion-hooks)) | |
| 2392 | |
| 2393 (defcustom line-move-ignore-invisible nil | |
| 2394 "*Non-nil means \\[next-line] and \\[previous-line] ignore invisible lines. | |
| 2395 Use with care, as it slows down movement significantly. Outline mode sets this." | |
| 2396 :type 'boolean | |
| 2397 :group 'editing-basics) | |
| 2398 | |
| 2399 ;; This is the guts of next-line and previous-line. | |
| 444 | 2400 ;; Count says how many lines to move. |
| 2401 (defun line-move (count) | |
| 428 | 2402 ;; Don't run any point-motion hooks, and disregard intangibility, |
| 2403 ;; for intermediate positions. | |
| 2404 (let ((inhibit-point-motion-hooks t) | |
| 2405 (opoint (point)) | |
| 2406 new) | |
| 2407 (unwind-protect | |
| 2408 (progn | |
| 2409 (if (not (or (eq last-command 'next-line) | |
| 2410 (eq last-command 'previous-line))) | |
| 2411 (setq temporary-goal-column | |
| 2412 (if (and track-eol (eolp) | |
| 444 | 2413 ;; Don't count start of empty line as end of line |
| 428 | 2414 ;; unless we just did explicit end-of-line. |
| 2415 (or (not (bolp)) (eq last-command 'end-of-line))) | |
| 2416 9999 | |
| 2417 (current-column)))) | |
| 2418 (if (and (not (integerp selective-display)) | |
| 2419 (not line-move-ignore-invisible)) | |
| 2420 ;; Use just newline characters. | |
| 444 | 2421 (or (if (> count 0) |
| 2422 (progn (if (> count 1) (forward-line (1- count))) | |
| 2423 ;; This way of moving forward COUNT lines | |
| 428 | 2424 ;; verifies that we have a newline after the last one. |
| 2425 ;; It doesn't get confused by intangible text. | |
| 2426 (end-of-line) | |
| 2427 (zerop (forward-line 1))) | |
| 444 | 2428 (and (zerop (forward-line count)) |
| 428 | 2429 (bolp))) |
| 444 | 2430 (signal (if (< count 0) |
| 428 | 2431 'beginning-of-buffer |
| 2432 'end-of-buffer) | |
| 2433 nil)) | |
| 444 | 2434 ;; Move by count lines, but ignore invisible ones. |
| 2435 (while (> count 0) | |
| 428 | 2436 (end-of-line) |
| 2437 (and (zerop (vertical-motion 1)) | |
| 2438 (signal 'end-of-buffer nil)) | |
| 2439 ;; If the following character is currently invisible, | |
| 2440 ;; skip all characters with that same `invisible' property value. | |
| 2441 (while (and (not (eobp)) | |
| 2442 (let ((prop | |
| 2443 (get-char-property (point) 'invisible))) | |
| 2444 (if (eq buffer-invisibility-spec t) | |
| 2445 prop | |
| 2446 (or (memq prop buffer-invisibility-spec) | |
| 2447 (assq prop buffer-invisibility-spec))))) | |
| 2448 (if (get-text-property (point) 'invisible) | |
| 2449 (goto-char (next-single-property-change (point) 'invisible)) | |
| 2450 (goto-char (next-extent-change (point))))) ; XEmacs | |
| 444 | 2451 (setq count (1- count))) |
| 2452 (while (< count 0) | |
| 428 | 2453 (beginning-of-line) |
| 2454 (and (zerop (vertical-motion -1)) | |
| 2455 (signal 'beginning-of-buffer nil)) | |
| 2456 (while (and (not (bobp)) | |
| 2457 (let ((prop | |
| 2458 (get-char-property (1- (point)) 'invisible))) | |
| 2459 (if (eq buffer-invisibility-spec t) | |
| 2460 prop | |
| 2461 (or (memq prop buffer-invisibility-spec) | |
| 2462 (assq prop buffer-invisibility-spec))))) | |
| 2463 (if (get-text-property (1- (point)) 'invisible) | |
| 2464 (goto-char (previous-single-property-change (point) 'invisible)) | |
| 2465 (goto-char (previous-extent-change (point))))) ; XEmacs | |
| 444 | 2466 (setq count (1+ count)))) |
| 428 | 2467 (move-to-column (or goal-column temporary-goal-column))) |
| 2468 ;; Remember where we moved to, go back home, | |
| 2469 ;; then do the motion over again | |
| 2470 ;; in just one step, with intangibility and point-motion hooks | |
| 2471 ;; enabled this time. | |
| 2472 (setq new (point)) | |
| 2473 (goto-char opoint) | |
| 2474 (setq inhibit-point-motion-hooks nil) | |
| 2475 (goto-char new))) | |
| 2476 nil) | |
| 2477 | |
| 2478 ;;; Many people have said they rarely use this feature, and often type | |
| 2479 ;;; it by accident. Maybe it shouldn't even be on a key. | |
| 2480 ;; It's not on a key, as of 20.2. So no need for this. | |
| 2481 ;(put 'set-goal-column 'disabled t) | |
| 2482 | |
| 444 | 2483 (defun set-goal-column (column) |
| 428 | 2484 "Set the current horizontal position as a goal for \\[next-line] and \\[previous-line]. |
| 2485 Those commands will move to this position in the line moved to | |
| 2486 rather than trying to keep the same horizontal position. | |
| 2487 With a non-nil argument, clears out the goal column | |
| 2488 so that \\[next-line] and \\[previous-line] resume vertical motion. | |
| 2489 The goal column is stored in the variable `goal-column'." | |
| 2490 (interactive "_P") ; XEmacs | |
| 444 | 2491 (if column |
| 428 | 2492 (progn |
| 2493 (setq goal-column nil) | |
| 2494 (display-message 'command "No goal column")) | |
| 2495 (setq goal-column (current-column)) | |
| 2496 (lmessage 'command | |
| 444 | 2497 "Goal column %d (use %s with a prefix arg to unset it)" |
| 428 | 2498 goal-column |
| 2499 (substitute-command-keys "\\[set-goal-column]"))) | |
| 2500 nil) | |
| 2501 | |
| 2502 ;; deleted FSFmacs terminal randomness hscroll-point-visible stuff. | |
| 2503 ;; hscroll-step | |
| 2504 ;; hscroll-point-visible | |
| 2505 ;; hscroll-window-column | |
| 2506 ;; right-arrow | |
| 2507 ;; left-arrow | |
| 2508 | |
| 2509 (defun scroll-other-window-down (lines) | |
| 2510 "Scroll the \"other window\" down. | |
| 2511 For more details, see the documentation for `scroll-other-window'." | |
| 2512 (interactive "P") | |
| 2513 (scroll-other-window | |
| 2514 ;; Just invert the argument's meaning. | |
| 2515 ;; We can do that without knowing which window it will be. | |
| 2516 (if (eq lines '-) nil | |
| 2517 (if (null lines) '- | |
| 2518 (- (prefix-numeric-value lines)))))) | |
| 2519 ;(define-key esc-map [?\C-\S-v] 'scroll-other-window-down) | |
| 2520 | |
| 2521 (defun beginning-of-buffer-other-window (arg) | |
| 2522 "Move point to the beginning of the buffer in the other window. | |
| 2523 Leave mark at previous position. | |
| 2524 With arg N, put point N/10 of the way from the true beginning." | |
| 2525 (interactive "P") | |
| 2526 (let ((orig-window (selected-window)) | |
| 2527 (window (other-window-for-scrolling))) | |
| 2528 ;; We use unwind-protect rather than save-window-excursion | |
| 2529 ;; because the latter would preserve the things we want to change. | |
| 2530 (unwind-protect | |
| 2531 (progn | |
| 2532 (select-window window) | |
| 2533 ;; Set point and mark in that window's buffer. | |
| 2534 (beginning-of-buffer arg) | |
| 2535 ;; Set point accordingly. | |
| 2536 (recenter '(t))) | |
| 2537 (select-window orig-window)))) | |
| 2538 | |
| 2539 (defun end-of-buffer-other-window (arg) | |
| 2540 "Move point to the end of the buffer in the other window. | |
| 2541 Leave mark at previous position. | |
| 2542 With arg N, put point N/10 of the way from the true end." | |
| 2543 (interactive "P") | |
| 2544 ;; See beginning-of-buffer-other-window for comments. | |
| 2545 (let ((orig-window (selected-window)) | |
| 2546 (window (other-window-for-scrolling))) | |
| 2547 (unwind-protect | |
| 2548 (progn | |
| 2549 (select-window window) | |
| 2550 (end-of-buffer arg) | |
| 2551 (recenter '(t))) | |
| 2552 (select-window orig-window)))) | |
| 2553 | |
| 2554 (defun transpose-chars (arg) | |
| 2555 "Interchange characters around point, moving forward one character. | |
| 2556 With prefix arg ARG, effect is to take character before point | |
| 2557 and drag it forward past ARG other characters (backward if ARG negative). | |
| 2558 If no argument and at end of line, the previous two chars are exchanged." | |
| 2559 (interactive "*P") | |
| 446 | 2560 (and (null arg) (eolp) (backward-char 1)) |
| 428 | 2561 (transpose-subr 'forward-char (prefix-numeric-value arg))) |
| 2562 | |
| 2563 ;;; A very old implementation of transpose-chars from the old days ... | |
| 2564 (defun transpose-preceding-chars (arg) | |
| 2565 "Interchange characters before point. | |
| 2566 With prefix arg ARG, effect is to take character before point | |
| 2567 and drag it forward past ARG other characters (backward if ARG negative). | |
| 2568 If no argument and not at start of line, the previous two chars are exchanged." | |
| 2569 (interactive "*P") | |
| 446 | 2570 (and (null arg) (not (bolp)) (backward-char 1)) |
| 428 | 2571 (transpose-subr 'forward-char (prefix-numeric-value arg))) |
| 2572 | |
| 2573 | |
| 2574 (defun transpose-words (arg) | |
| 2575 "Interchange words around point, leaving point at end of them. | |
| 2576 With prefix arg ARG, effect is to take word before or around point | |
| 2577 and drag it forward past ARG other words (backward if ARG negative). | |
| 2578 If ARG is zero, the words around or after point and around or after mark | |
| 2579 are interchanged." | |
| 2580 (interactive "*p") | |
| 2581 (transpose-subr 'forward-word arg)) | |
| 2582 | |
| 2583 (defun transpose-sexps (arg) | |
| 2584 "Like \\[transpose-words] but applies to sexps. | |
| 2585 Does not work on a sexp that point is in the middle of | |
| 2586 if it is a list or string." | |
| 2587 (interactive "*p") | |
| 2588 (transpose-subr 'forward-sexp arg)) | |
| 2589 | |
| 613 | 2590 (defun Simple-forward-line-creating-newline () |
| 2591 ;; Move forward over a line, | |
| 2592 ;; but create a newline if none exists yet. | |
| 2593 (end-of-line) | |
| 2594 (if (eobp) | |
| 2595 (newline) | |
| 2596 (forward-char 1))) | |
| 2597 | |
| 2598 (defun Simple-transpose-lines-mover (arg) | |
| 2599 (if (= arg 1) | |
| 2600 (Simple-forward-line-creating-newline) | |
| 2601 (forward-line arg))) | |
| 2602 | |
| 428 | 2603 (defun transpose-lines (arg) |
| 2604 "Exchange current line and previous line, leaving point after both. | |
| 2605 With argument ARG, takes previous line and moves it past ARG lines. | |
| 2606 With argument 0, interchanges line point is in with line mark is in." | |
| 2607 (interactive "*p") | |
| 613 | 2608 (transpose-subr 'Simple-transpose-lines-mover arg)) |
| 428 | 2609 |
| 442 | 2610 (defun transpose-line-up (arg) |
| 2611 "Move current line one line up, leaving point at beginning of that line. | |
| 613 | 2612 With argument ARG, move it ARG lines up. This can be run repeatedly |
| 2613 to move the current line up a number of lines. | |
| 2614 | |
| 2615 If the region is active, move the region up one line (or ARG lines, | |
| 2616 if specified). The region will not be selected afterwards, but this | |
| 2617 command can still be run repeatedly to move the region up a number | |
| 2618 of lines." | |
| 442 | 2619 (interactive "*p") |
| 613 | 2620 (transpose-line-down (- arg))) |
| 442 | 2621 |
| 2622 (defun transpose-line-down (arg) | |
| 2623 "Move current line one line down, leaving point at beginning of that line. | |
| 613 | 2624 With argument ARG, move it ARG lines down. This can be run repeatedly |
| 2625 to move the current line down a number of lines. | |
| 2626 | |
| 2627 If the region is active, move the region down one line (or ARG lines, | |
| 2628 if specified). The region will not be selected afterwards, but this | |
| 2629 command can still be run repeatedly to move the region down a number | |
| 2630 of lines." | |
| 442 | 2631 (interactive "*p") |
| 613 | 2632 (if (or (region-active-p) |
| 2633 (getf last-command-properties 'transpose-region-by-line-command)) | |
| 2634 (progn | |
| 2635 (transpose-subr 'Simple-transpose-lines-mover arg t) | |
| 2636 (putf this-command-properties 'transpose-region-by-line-command t)) | |
| 2637 (Simple-forward-line-creating-newline) | |
| 2638 (transpose-subr 'Simple-transpose-lines-mover arg) | |
| 2639 (forward-line -1))) | |
| 2640 | |
| 2641 (defun transpose-subr (mover arg &optional move-region) | |
| 428 | 2642 (let (start1 end1 start2 end2) |
| 442 | 2643 ;; XEmacs -- use flet instead of defining a separate function and |
| 613 | 2644 ;; relying on dynamic scope; use (mark t) etc; add code to support |
| 2645 ;; the new MOVE-REGION arg. | |
| 442 | 2646 (flet ((transpose-subr-1 () |
| 2647 (if (> (min end1 end2) (max start1 start2)) | |
| 2648 (error "Don't have two things to transpose")) | |
| 2649 (let ((word1 (buffer-substring start1 end1)) | |
| 2650 (word2 (buffer-substring start2 end2))) | |
| 2651 (delete-region start2 end2) | |
| 2652 (goto-char start2) | |
| 2653 (insert word1) | |
| 2654 (goto-char (if (< start1 start2) start1 | |
| 2655 (+ start1 (- (length word1) (length word2))))) | |
| 2656 (delete-char (length word1)) | |
| 2657 (insert word2)))) | |
| 2658 (if (= arg 0) | |
| 2659 (progn | |
| 2660 (save-excursion | |
| 2661 (funcall mover 1) | |
| 2662 (setq end2 (point)) | |
| 2663 (funcall mover -1) | |
| 2664 (setq start2 (point)) | |
| 613 | 2665 (goto-char (mark t)) |
| 442 | 2666 (funcall mover 1) |
| 2667 (setq end1 (point)) | |
| 2668 (funcall mover -1) | |
| 2669 (setq start1 (point)) | |
| 2670 (transpose-subr-1)) | |
| 613 | 2671 (exchange-point-and-mark t))) |
| 2672 (if move-region | |
| 2673 (let ((rbeg (region-beginning)) | |
| 2674 (rend (region-end))) | |
| 2675 (while (> arg 0) | |
| 2676 (goto-char rend) | |
| 2677 (funcall mover 1) | |
| 2678 (setq end2 (point)) | |
| 2679 (funcall mover -1) | |
| 2680 (setq start2 (point)) | |
| 2681 (setq start1 rbeg end1 rend) | |
| 2682 (transpose-subr-1) | |
| 2683 (incf rbeg (- end2 start2)) | |
| 2684 (incf rend (- end2 start2)) | |
| 2685 (setq arg (1- arg))) | |
| 2686 (while (< arg 0) | |
| 2687 (goto-char rbeg) | |
| 2688 (funcall mover -1) | |
| 2689 (setq start1 (point)) | |
| 2690 (funcall mover 1) | |
| 2691 (setq end1 (point)) | |
| 2692 (setq start2 rbeg end2 rend) | |
| 2693 (transpose-subr-1) | |
| 2694 (decf rbeg (- end1 start1)) | |
| 2695 (decf rend (- end1 start1)) | |
| 2696 (setq arg (1+ arg))) | |
| 2697 (set-mark rbeg) | |
| 2698 (goto-char rend)) | |
| 2699 (while (> arg 0) | |
| 2700 (funcall mover -1) | |
| 2701 (setq start1 (point)) | |
| 2702 (funcall mover 1) | |
| 2703 (setq end1 (point)) | |
| 2704 (funcall mover 1) | |
| 2705 (setq end2 (point)) | |
| 2706 (funcall mover -1) | |
| 2707 (setq start2 (point)) | |
| 2708 (transpose-subr-1) | |
| 2709 (goto-char end2) | |
| 2710 (setq arg (1- arg))) | |
| 2711 (while (< arg 0) | |
| 2712 (funcall mover -1) | |
| 2713 (setq start2 (point)) | |
| 2714 (funcall mover -1) | |
| 2715 (setq start1 (point)) | |
| 2716 (funcall mover 1) | |
| 2717 (setq end1 (point)) | |
| 2718 (funcall mover 1) | |
| 2719 (setq end2 (point)) | |
| 2720 (transpose-subr-1) | |
| 2721 (setq arg (1+ arg))))))) | |
| 442 | 2722 |
| 428 | 2723 |
| 2724 ;; XEmacs | |
| 2725 (defun prefix-region (prefix) | |
| 2726 "Add a prefix string to each line between mark and point." | |
| 2727 (interactive "sPrefix string: ") | |
| 2728 (if prefix | |
| 2729 (let ((count (count-lines (mark) (point)))) | |
| 2730 (goto-char (min (mark) (point))) | |
| 2731 (while (> count 0) | |
| 2732 (setq count (1- count)) | |
| 2733 (beginning-of-line 1) | |
| 2734 (insert prefix) | |
| 2735 (end-of-line 1) | |
| 2736 (forward-char 1))))) | |
| 2737 | |
| 2738 | |
| 446 | 2739 (defun backward-word (&optional count buffer) |
| 2740 "Move point backward COUNT words (forward if COUNT is negative). | |
| 2741 Normally t is returned, but if an edge of the buffer is reached, | |
| 2742 point is left there and nil is returned. | |
| 2743 | |
| 462 | 2744 COUNT defaults to 1, and BUFFER defaults to the current buffer. |
| 2745 | |
| 2746 The characters that are moved over may be added to the current selection | |
| 2747 \(i.e. active region) if the Shift key is held down, a motion key is used | |
| 2748 to invoke this command, and `shifted-motion-keys-select-region' is t; see | |
| 2749 the documentation for this variable for more details." | |
| 446 | 2750 (interactive "_p") |
| 2751 (forward-word (- (or count 1)) buffer)) | |
| 2752 | |
| 2753 (defun mark-word (&optional count) | |
| 2754 "Mark the text from point until encountering the end of a word. | |
| 2755 With optional argument COUNT, mark COUNT words." | |
| 428 | 2756 (interactive "p") |
| 446 | 2757 (mark-something 'mark-word 'forward-word count)) |
| 2758 | |
| 844 | 2759 (defcustom kill-word-into-kill-ring t |
| 2760 "*Non-nil means `kill-word' saves word killed into kill ring. | |
| 2761 \(Normally, this also affects the clipboard.) | |
| 2762 Nil means word is just deleted, without being remembered. | |
| 2763 This also applies to `backward-kill-word' and `backward-or-forward-kill-word'." | |
| 2764 :type 'boolean | |
| 2765 :group 'editing-basics) | |
| 2766 | |
| 446 | 2767 (defun kill-word (&optional count) |
| 428 | 2768 "Kill characters forward until encountering the end of a word. |
| 446 | 2769 With optional argument COUNT, do this that many times." |
| 2770 (interactive "*p") | |
| 844 | 2771 (if kill-word-into-kill-ring |
| 2772 (kill-region (point) (save-excursion (forward-word count) (point))) | |
| 2773 (delete-region (point) (save-excursion (forward-word count) (point))))) | |
| 446 | 2774 |
| 2775 (defun backward-kill-word (&optional count) | |
| 2776 "Kill characters backward until encountering the end of a word. | |
| 428 | 2777 With argument, do this that many times." |
| 2778 (interactive "*p") | |
| 446 | 2779 (kill-word (- (or count 1)))) |
| 428 | 2780 |
| 2781 (defun current-word (&optional strict) | |
| 2782 "Return the word point is on (or a nearby word) as a string. | |
| 2783 If optional arg STRICT is non-nil, return nil unless point is within | |
| 2784 or adjacent to a word. | |
| 2785 If point is not between two word-constituent characters, but immediately | |
| 2786 follows one, move back first. | |
| 2787 Otherwise, if point precedes a word constituent, move forward first. | |
| 2788 Otherwise, move backwards until a word constituent is found and get that word; | |
| 2789 if you a newlines is reached first, move forward instead." | |
| 2790 (save-excursion | |
| 2791 (let ((oldpoint (point)) (start (point)) (end (point))) | |
| 2792 (skip-syntax-backward "w_") (setq start (point)) | |
| 2793 (goto-char oldpoint) | |
| 2794 (skip-syntax-forward "w_") (setq end (point)) | |
| 2795 (if (and (eq start oldpoint) (eq end oldpoint)) | |
| 2796 ;; Point is neither within nor adjacent to a word. | |
| 2797 (and (not strict) | |
| 2798 (progn | |
| 2799 ;; Look for preceding word in same line. | |
| 2800 (skip-syntax-backward "^w_" | |
| 2801 (save-excursion | |
| 2802 (beginning-of-line) (point))) | |
| 2803 (if (bolp) | |
| 2804 ;; No preceding word in same line. | |
| 2805 ;; Look for following word in same line. | |
| 2806 (progn | |
| 2807 (skip-syntax-forward "^w_" | |
| 2808 (save-excursion | |
| 2809 (end-of-line) (point))) | |
| 2810 (setq start (point)) | |
| 2811 (skip-syntax-forward "w_") | |
| 2812 (setq end (point))) | |
| 2813 (setq end (point)) | |
| 2814 (skip-syntax-backward "w_") | |
| 2815 (setq start (point))) | |
| 2816 (buffer-substring start end))) | |
| 2817 (buffer-substring start end))))) | |
| 2818 | |
| 2819 (defcustom fill-prefix nil | |
| 2820 "*String for filling to insert at front of new line, or nil for none. | |
| 2821 Setting this variable automatically makes it local to the current buffer." | |
| 2822 :type '(choice (const :tag "None" nil) | |
| 2823 string) | |
| 2824 :group 'fill) | |
| 2825 (make-variable-buffer-local 'fill-prefix) | |
| 2826 | |
| 2827 (defcustom auto-fill-inhibit-regexp nil | |
| 2828 "*Regexp to match lines which should not be auto-filled." | |
| 2829 :type '(choice (const :tag "None" nil) | |
| 2830 regexp) | |
| 2831 :group 'fill) | |
| 2832 | |
| 2833 (defvar comment-line-break-function 'indent-new-comment-line | |
| 2834 "*Mode-specific function which line breaks and continues a comment. | |
| 2835 | |
| 2836 This function is only called during auto-filling of a comment section. | |
| 2837 The function should take a single optional argument which is a flag | |
| 2838 indicating whether soft newlines should be inserted.") | |
| 2839 | |
| 2840 ;; This function is the auto-fill-function of a buffer | |
| 2841 ;; when Auto-Fill mode is enabled. | |
| 2842 ;; It returns t if it really did any work. | |
| 2843 ;; XEmacs: This function is totally different. | |
| 2844 (defun do-auto-fill () | |
| 2845 (let (give-up) | |
| 2846 (or (and auto-fill-inhibit-regexp | |
| 2847 (save-excursion (beginning-of-line) | |
| 2848 (looking-at auto-fill-inhibit-regexp))) | |
| 2849 (while (and (not give-up) (> (current-column) fill-column)) | |
| 2850 ;; Determine where to split the line. | |
| 2851 (let ((fill-prefix fill-prefix) | |
| 2852 (fill-point | |
| 2853 (let ((opoint (point)) | |
| 2854 bounce | |
| 502 | 2855 (re-break-point ;; Kinsoku processing |
| 2856 (if (featurep 'mule) | |
| 771 | 2857 (with-boundp 'word-across-newline |
| 2858 (concat "[ \t\n]\\|" word-across-newline | |
| 2859 ".\\|." word-across-newline)) | |
| 502 | 2860 "[ \t\n]")) |
| 428 | 2861 (first t)) |
| 2862 (save-excursion | |
| 2863 (move-to-column (1+ fill-column)) | |
| 2864 ;; Move back to a word boundary. | |
| 2865 (while (or first | |
| 2866 ;; If this is after period and a single space, | |
| 2867 ;; move back once more--we don't want to break | |
| 2868 ;; the line there and make it look like a | |
| 2869 ;; sentence end. | |
| 2870 (and (not (bobp)) | |
| 2871 (not bounce) | |
| 2872 sentence-end-double-space | |
| 446 | 2873 (save-excursion (backward-char 1) |
| 428 | 2874 (and (looking-at "\\. ") |
| 2875 (not (looking-at "\\. ")))))) | |
| 2876 (setq first nil) | |
| 502 | 2877 ;; XEmacs: change for Kinsoku processing |
| 428 | 2878 (fill-move-backward-to-break-point re-break-point) |
| 2879 ;; If we find nowhere on the line to break it, | |
| 2880 ;; break after one word. Set bounce to t | |
| 2881 ;; so we will not keep going in this while loop. | |
| 2882 (if (bolp) | |
| 2883 (progn | |
| 502 | 2884 ;; XEmacs: change for Kinsoku processing |
| 428 | 2885 (fill-move-forward-to-break-point re-break-point |
| 2886 opoint) | |
| 2887 (setq bounce t))) | |
| 2888 (skip-chars-backward " \t")) | |
| 2889 (if (and (featurep 'mule) | |
| 502 | 2890 (or bounce (bolp))) |
| 2891 (declare-fboundp (kinsoku-process))) | |
| 428 | 2892 ;; Let fill-point be set to the place where we end up. |
| 2893 (point))))) | |
| 2894 | |
| 2895 ;; I'm not sure why Stig made this change but it breaks | |
| 2896 ;; auto filling in at least C mode so I'm taking it back | |
| 2897 ;; out. --cet | |
| 2898 ;; XEmacs - adaptive fill. | |
| 2899 ;;(maybe-adapt-fill-prefix | |
| 2900 ;; (or from (setq from (save-excursion (beginning-of-line) | |
| 2901 ;; (point)))) | |
| 2902 ;; (or to (setq to (save-excursion (beginning-of-line 2) | |
| 2903 ;; (point)))) | |
| 2904 ;; t) | |
| 2905 | |
| 2906 ;; If that place is not the beginning of the line, | |
| 2907 ;; break the line there. | |
| 2908 (if (save-excursion | |
| 2909 (goto-char fill-point) | |
| 502 | 2910 ;; during kinsoku processing it is possible to move beyond |
| 2911 (not (or (bolp) (eolp)))) | |
| 428 | 2912 (let ((prev-column (current-column))) |
| 2913 ;; If point is at the fill-point, do not `save-excursion'. | |
| 2914 ;; Otherwise, if a comment prefix or fill-prefix is inserted, | |
| 2915 ;; point will end up before it rather than after it. | |
| 2916 (if (save-excursion | |
| 2917 (skip-chars-backward " \t") | |
| 2918 (= (point) fill-point)) | |
| 2919 ;; 1999-09-17 hniksic: turn off Kinsoku until | |
| 2920 ;; it's debugged. | |
| 444 | 2921 (funcall comment-line-break-function) |
| 502 | 2922 ;; XEmacs: Kinsoku processing |
| 428 | 2923 ; ;(indent-new-comment-line) |
| 2924 ; (let ((spacep (memq (char-before (point)) '(?\ ?\t)))) | |
| 2925 ; (funcall comment-line-break-function) | |
| 2926 ; ;; if user type space explicitly, leave SPC | |
| 2927 ; ;; even if there is no WAN. | |
| 2928 ; (if spacep | |
| 2929 ; (save-excursion | |
| 2930 ; (goto-char fill-point) | |
| 2931 ; ;; put SPC except that there is SPC | |
| 2932 ; ;; already or there is sentence end. | |
| 2933 ; (or (memq (char-after (point)) '(?\ ?\t)) | |
| 2934 ; (fill-end-of-sentence-p) | |
| 2935 ; (insert ?\ ))))) | |
| 2936 (save-excursion | |
| 2937 (goto-char fill-point) | |
| 2938 (funcall comment-line-break-function))) | |
| 2939 ;; If making the new line didn't reduce the hpos of | |
| 2940 ;; the end of the line, then give up now; | |
| 2941 ;; trying again will not help. | |
| 2942 (if (>= (current-column) prev-column) | |
| 2943 (setq give-up t))) | |
| 2944 ;; No place to break => stop trying. | |
| 2945 (setq give-up t))))))) | |
| 2946 | |
| 2947 ;; Put FSF one in until I can one or the other working properly, then the | |
| 2948 ;; other one is history. | |
| 2949 ;(defun fsf:do-auto-fill () | |
| 2950 ; (let (fc justify | |
| 2951 ; ;; bol | |
| 2952 ; give-up | |
| 2953 ; (fill-prefix fill-prefix)) | |
| 2954 ; (if (or (not (setq justify (current-justification))) | |
| 2955 ; (null (setq fc (current-fill-column))) | |
| 2956 ; (and (eq justify 'left) | |
| 2957 ; (<= (current-column) fc)) | |
| 2958 ; (save-excursion (beginning-of-line) | |
| 2959 ; ;; (setq bol (point)) | |
| 2960 ; (and auto-fill-inhibit-regexp | |
| 2961 ; (looking-at auto-fill-inhibit-regexp)))) | |
| 2962 ; nil ;; Auto-filling not required | |
| 2963 ; (if (memq justify '(full center right)) | |
| 2964 ; (save-excursion (unjustify-current-line))) | |
| 2965 | |
| 2966 ; ;; Choose a fill-prefix automatically. | |
| 2967 ; (if (and adaptive-fill-mode | |
| 2968 ; (or (null fill-prefix) (string= fill-prefix ""))) | |
| 2969 ; (let ((prefix | |
| 2970 ; (fill-context-prefix | |
| 2971 ; (save-excursion (backward-paragraph 1) (point)) | |
| 2972 ; (save-excursion (forward-paragraph 1) (point)) | |
| 2973 ; ;; Don't accept a non-whitespace fill prefix | |
| 2974 ; ;; from the first line of a paragraph. | |
| 2975 ; "^[ \t]*$"))) | |
| 2976 ; (and prefix (not (equal prefix "")) | |
| 2977 ; (setq fill-prefix prefix)))) | |
| 2978 | |
| 2979 ; (while (and (not give-up) (> (current-column) fc)) | |
| 2980 ; ;; Determine where to split the line. | |
| 2981 ; (let ((fill-point | |
| 2982 ; (let ((opoint (point)) | |
| 2983 ; bounce | |
| 2984 ; (first t)) | |
| 2985 ; (save-excursion | |
| 2986 ; (move-to-column (1+ fc)) | |
| 2987 ; ;; Move back to a word boundary. | |
| 2988 ; (while (or first | |
| 2989 ; ;; If this is after period and a single space, | |
| 2990 ; ;; move back once more--we don't want to break | |
| 2991 ; ;; the line there and make it look like a | |
| 2992 ; ;; sentence end. | |
| 2993 ; (and (not (bobp)) | |
| 2994 ; (not bounce) | |
| 2995 ; sentence-end-double-space | |
| 446 | 2996 ; (save-excursion (backward-char 1) |
| 428 | 2997 ; (and (looking-at "\\. ") |
| 2998 ; (not (looking-at "\\. ")))))) | |
| 2999 ; (setq first nil) | |
| 3000 ; (skip-chars-backward "^ \t\n") | |
| 3001 ; ;; If we find nowhere on the line to break it, | |
| 3002 ; ;; break after one word. Set bounce to t | |
| 3003 ; ;; so we will not keep going in this while loop. | |
| 3004 ; (if (bolp) | |
| 3005 ; (progn | |
| 3006 ; (re-search-forward "[ \t]" opoint t) | |
| 3007 ; (setq bounce t))) | |
| 3008 ; (skip-chars-backward " \t")) | |
| 3009 ; ;; Let fill-point be set to the place where we end up. | |
| 3010 ; (point))))) | |
| 3011 ; ;; If that place is not the beginning of the line, | |
| 3012 ; ;; break the line there. | |
| 3013 ; (if (save-excursion | |
| 3014 ; (goto-char fill-point) | |
| 3015 ; (not (bolp))) | |
| 3016 ; (let ((prev-column (current-column))) | |
| 3017 ; ;; If point is at the fill-point, do not `save-excursion'. | |
| 3018 ; ;; Otherwise, if a comment prefix or fill-prefix is inserted, | |
| 3019 ; ;; point will end up before it rather than after it. | |
| 3020 ; (if (save-excursion | |
| 3021 ; (skip-chars-backward " \t") | |
| 3022 ; (= (point) fill-point)) | |
| 3023 ; (funcall comment-line-break-function t) | |
| 3024 ; (save-excursion | |
| 3025 ; (goto-char fill-point) | |
| 3026 ; (funcall comment-line-break-function t))) | |
| 3027 ; ;; Now do justification, if required | |
| 3028 ; (if (not (eq justify 'left)) | |
| 3029 ; (save-excursion | |
| 3030 ; (end-of-line 0) | |
| 3031 ; (justify-current-line justify nil t))) | |
| 3032 ; ;; If making the new line didn't reduce the hpos of | |
| 3033 ; ;; the end of the line, then give up now; | |
| 3034 ; ;; trying again will not help. | |
| 3035 ; (if (>= (current-column) prev-column) | |
| 3036 ; (setq give-up t))) | |
| 3037 ; ;; No place to break => stop trying. | |
| 3038 ; (setq give-up t)))) | |
| 3039 ; ;; Justify last line. | |
| 3040 ; (justify-current-line justify t t) | |
| 3041 ; t))) | |
| 3042 | |
| 3043 (defvar normal-auto-fill-function 'do-auto-fill | |
| 3044 "The function to use for `auto-fill-function' if Auto Fill mode is turned on. | |
| 3045 Some major modes set this.") | |
| 3046 | |
| 3047 (defun auto-fill-mode (&optional arg) | |
| 3048 "Toggle auto-fill mode. | |
| 3049 With arg, turn auto-fill mode on if and only if arg is positive. | |
| 3050 In Auto-Fill mode, inserting a space at a column beyond `current-fill-column' | |
| 3051 automatically breaks the line at a previous space. | |
| 3052 | |
| 3053 The value of `normal-auto-fill-function' specifies the function to use | |
| 3054 for `auto-fill-function' when turning Auto Fill mode on." | |
| 3055 (interactive "P") | |
| 3056 (prog1 (setq auto-fill-function | |
| 3057 (if (if (null arg) | |
| 3058 (not auto-fill-function) | |
| 3059 (> (prefix-numeric-value arg) 0)) | |
| 3060 normal-auto-fill-function | |
| 3061 nil)) | |
| 3062 (redraw-modeline))) | |
| 3063 | |
| 3064 ;; This holds a document string used to document auto-fill-mode. | |
| 3065 (defun auto-fill-function () | |
| 3066 "Automatically break line at a previous space, in insertion of text." | |
| 3067 nil) | |
| 3068 | |
| 3069 (defun turn-on-auto-fill () | |
| 3070 "Unconditionally turn on Auto Fill mode." | |
| 444 | 3071 (interactive) |
| 428 | 3072 (auto-fill-mode 1)) |
| 3073 | |
|
4681
64ac4337298b
Implement turn-off-auto-fill.
Malcolm Purvis <malcolmp@xemacs.org>
parents:
4680
diff
changeset
|
3074 (defun turn-off-auto-fill () |
|
64ac4337298b
Implement turn-off-auto-fill.
Malcolm Purvis <malcolmp@xemacs.org>
parents:
4680
diff
changeset
|
3075 "Unconditionally turn off Auto Fill mode." |
|
64ac4337298b
Implement turn-off-auto-fill.
Malcolm Purvis <malcolmp@xemacs.org>
parents:
4680
diff
changeset
|
3076 (interactive) |
|
64ac4337298b
Implement turn-off-auto-fill.
Malcolm Purvis <malcolmp@xemacs.org>
parents:
4680
diff
changeset
|
3077 (auto-fill-mode -1)) |
|
64ac4337298b
Implement turn-off-auto-fill.
Malcolm Purvis <malcolmp@xemacs.org>
parents:
4680
diff
changeset
|
3078 |
| 428 | 3079 (defun set-fill-column (arg) |
| 3080 "Set `fill-column' to specified argument. | |
| 3081 Just \\[universal-argument] as argument means to use the current column | |
| 3082 The variable `fill-column' has a separate value for each buffer." | |
| 3083 (interactive "_P") ; XEmacs | |
| 3084 (cond ((integerp arg) | |
| 3085 (setq fill-column arg)) | |
| 3086 ((consp arg) | |
| 3087 (setq fill-column (current-column))) | |
| 3088 ;; Disallow missing argument; it's probably a typo for C-x C-f. | |
| 3089 (t | |
| 3090 (error "set-fill-column requires an explicit argument"))) | |
| 3091 (lmessage 'command "fill-column set to %d" fill-column)) | |
| 3092 | |
| 1333 | 3093 |
| 3094 ;; BEGIN SYNCHED WITH FSF 21.2. | |
| 3095 | |
| 428 | 3096 (defun set-selective-display (arg) |
| 3097 "Set `selective-display' to ARG; clear it if no arg. | |
| 3098 When the value of `selective-display' is a number > 0, | |
| 3099 lines whose indentation is >= that value are not displayed. | |
| 3100 The variable `selective-display' has a separate value for each buffer." | |
| 3101 (interactive "P") | |
| 3102 (if (eq selective-display t) | |
| 3103 (error "selective-display already in use for marked lines")) | |
| 3104 (let ((current-vpos | |
| 3105 (save-restriction | |
| 3106 (narrow-to-region (point-min) (point)) | |
| 3107 (goto-char (window-start)) | |
| 3108 (vertical-motion (window-height))))) | |
| 3109 (setq selective-display | |
| 3110 (and arg (prefix-numeric-value arg))) | |
| 3111 (recenter current-vpos)) | |
| 3112 (set-window-start (selected-window) (window-start (selected-window))) | |
| 3113 ;; #### doesn't localize properly: | |
| 3114 (princ "selective-display set to " t) | |
| 3115 (prin1 selective-display t) | |
| 3116 (princ "." t)) | |
| 3117 | |
| 3118 ;; XEmacs | |
| 3119 (defun nuke-selective-display () | |
| 3120 "Ensure that the buffer is not in selective-display mode. | |
| 3121 If `selective-display' is t, then restore the buffer text to its original | |
| 3122 state before disabling selective display." | |
| 3123 ;; by Stig@hackvan.com | |
| 3124 (interactive) | |
| 3125 (and (eq t selective-display) | |
| 3126 (save-excursion | |
| 3127 (save-restriction | |
| 3128 (widen) | |
| 3129 (goto-char (point-min)) | |
| 3130 (let ((mod-p (buffer-modified-p)) | |
| 3131 (buffer-read-only nil)) | |
| 3132 (while (search-forward "\r" nil t) | |
| 3133 (delete-char -1) | |
| 3134 (insert "\n")) | |
| 3135 (set-buffer-modified-p mod-p) | |
| 3136 )))) | |
| 3137 (setq selective-display nil)) | |
| 3138 | |
| 3139 (add-hook 'change-major-mode-hook 'nuke-selective-display) | |
| 3140 | |
| 1333 | 3141 (defvar overwrite-mode-textual " Ovwrt" |
| 428 | 3142 "The string displayed in the mode line when in overwrite mode.") |
| 1333 | 3143 (defvar overwrite-mode-binary " Bin Ovwrt" |
| 428 | 3144 "The string displayed in the mode line when in binary overwrite mode.") |
| 3145 | |
| 3146 (defun overwrite-mode (arg) | |
| 3147 "Toggle overwrite mode. | |
| 1333 | 3148 With arg, turn overwrite mode on iff arg is positive. |
| 428 | 3149 In overwrite mode, printing characters typed in replace existing text |
| 3150 on a one-for-one basis, rather than pushing it to the right. At the | |
| 3151 end of a line, such characters extend the line. Before a tab, | |
| 3152 such characters insert until the tab is filled in. | |
| 3153 \\[quoted-insert] still inserts characters in overwrite mode; this | |
| 3154 is supposed to make it easier to insert characters when necessary." | |
| 3155 (interactive "P") | |
| 3156 (setq overwrite-mode | |
| 3157 (if (if (null arg) (not overwrite-mode) | |
| 3158 (> (prefix-numeric-value arg) 0)) | |
| 3159 'overwrite-mode-textual)) | |
| 3160 (redraw-modeline)) | |
| 3161 | |
| 3162 (defun binary-overwrite-mode (arg) | |
| 3163 "Toggle binary overwrite mode. | |
| 1333 | 3164 With arg, turn binary overwrite mode on iff arg is positive. |
| 428 | 3165 In binary overwrite mode, printing characters typed in replace |
| 3166 existing text. Newlines are not treated specially, so typing at the | |
| 3167 end of a line joins the line to the next, with the typed character | |
| 3168 between them. Typing before a tab character simply replaces the tab | |
| 3169 with the character typed. | |
| 3170 \\[quoted-insert] replaces the text at the cursor, just as ordinary | |
| 3171 typing characters do. | |
| 3172 | |
| 3173 Note that binary overwrite mode is not its own minor mode; it is a | |
| 3174 specialization of overwrite-mode, entered by setting the | |
| 3175 `overwrite-mode' variable to `overwrite-mode-binary'." | |
| 3176 (interactive "P") | |
| 3177 (setq overwrite-mode | |
| 3178 (if (if (null arg) | |
| 3179 (not (eq overwrite-mode 'overwrite-mode-binary)) | |
| 3180 (> (prefix-numeric-value arg) 0)) | |
| 3181 'overwrite-mode-binary)) | |
| 3182 (redraw-modeline)) | |
| 1333 | 3183 |
| 3184 ;; END SYNCHED WITH FSF 21.2. | |
| 3185 | |
| 428 | 3186 |
| 771 | 3187 (defcustom line-number-mode t |
| 428 | 3188 "*Non-nil means display line number in modeline." |
| 3189 :type 'boolean | |
| 3190 :group 'editing-basics) | |
| 3191 | |
| 3192 (defun line-number-mode (arg) | |
| 3193 "Toggle Line Number mode. | |
| 444 | 3194 With arg, enable Line Number mode if arg is positive, else disable. |
| 428 | 3195 When Line Number mode is enabled, the line number appears |
| 3196 in the mode line." | |
| 3197 (interactive "P") | |
| 3198 (setq line-number-mode | |
| 3199 (if (null arg) (not line-number-mode) | |
| 3200 (> (prefix-numeric-value arg) 0))) | |
| 3201 (redraw-modeline)) | |
| 3202 | |
| 771 | 3203 (defcustom column-number-mode t |
| 428 | 3204 "*Non-nil means display column number in mode line." |
| 3205 :type 'boolean | |
| 3206 :group 'editing-basics) | |
| 3207 | |
| 3208 (defun column-number-mode (arg) | |
| 3209 "Toggle Column Number mode. | |
| 444 | 3210 With arg, enable Column Number mode if arg is positive, else disable. |
| 428 | 3211 When Column Number mode is enabled, the column number appears |
| 3212 in the mode line." | |
| 3213 (interactive "P") | |
| 3214 (setq column-number-mode | |
| 3215 (if (null arg) (not column-number-mode) | |
| 3216 (> (prefix-numeric-value arg) 0))) | |
| 3217 (redraw-modeline)) | |
| 3218 | |
| 3219 | |
| 3220 (defcustom blink-matching-paren t | |
| 3221 "*Non-nil means show matching open-paren when close-paren is inserted." | |
| 3222 :type 'boolean | |
| 3223 :group 'paren-blinking) | |
| 3224 | |
| 3225 (defcustom blink-matching-paren-on-screen t | |
| 3226 "*Non-nil means show matching open-paren when it is on screen. | |
| 3227 nil means don't show it (but the open-paren can still be shown | |
| 3228 when it is off screen." | |
| 3229 :type 'boolean | |
| 3230 :group 'paren-blinking) | |
| 3231 | |
| 3232 (defcustom blink-matching-paren-distance 12000 | |
| 3233 "*If non-nil, is maximum distance to search for matching open-paren." | |
| 3234 :type '(choice integer (const nil)) | |
| 3235 :group 'paren-blinking) | |
| 3236 | |
| 3237 (defcustom blink-matching-delay 1 | |
| 3238 "*The number of seconds that `blink-matching-open' will delay at a match." | |
| 3239 :type 'number | |
| 3240 :group 'paren-blinking) | |
| 3241 | |
| 3242 (defcustom blink-matching-paren-dont-ignore-comments nil | |
| 3243 "*Non-nil means `blink-matching-paren' should not ignore comments." | |
| 3244 :type 'boolean | |
| 3245 :group 'paren-blinking) | |
| 3246 | |
| 3247 (defun blink-matching-open () | |
| 3248 "Move cursor momentarily to the beginning of the sexp before point." | |
| 3249 (interactive "_") ; XEmacs | |
| 3250 (and (> (point) (1+ (point-min))) | |
| 3251 blink-matching-paren | |
| 3252 ;; Verify an even number of quoting characters precede the close. | |
| 3253 (= 1 (logand 1 (- (point) | |
| 3254 (save-excursion | |
| 446 | 3255 (backward-char 1) |
| 428 | 3256 (skip-syntax-backward "/\\") |
| 3257 (point))))) | |
| 3258 (let* ((oldpos (point)) | |
| 3259 (blinkpos) | |
| 3260 (mismatch)) | |
| 3261 (save-excursion | |
| 3262 (save-restriction | |
| 3263 (if blink-matching-paren-distance | |
| 3264 (narrow-to-region (max (point-min) | |
| 3265 (- (point) blink-matching-paren-distance)) | |
| 3266 oldpos)) | |
| 3267 (condition-case () | |
| 3268 (let ((parse-sexp-ignore-comments | |
| 3269 (and parse-sexp-ignore-comments | |
| 3270 (not blink-matching-paren-dont-ignore-comments)))) | |
| 3271 (setq blinkpos (scan-sexps oldpos -1))) | |
| 3272 (error nil))) | |
| 3273 (and blinkpos | |
| 3274 (/= (char-syntax (char-after blinkpos)) | |
| 3275 ?\$) | |
| 3276 (setq mismatch | |
| 3277 (or (null (matching-paren (char-after blinkpos))) | |
| 3278 (/= (char-after (1- oldpos)) | |
| 3279 (matching-paren (char-after blinkpos)))))) | |
| 3280 (if mismatch (setq blinkpos nil)) | |
| 3281 (if blinkpos | |
| 3282 (progn | |
| 3283 (goto-char blinkpos) | |
| 3284 (if (pos-visible-in-window-p) | |
| 3285 (and blink-matching-paren-on-screen | |
| 3286 (progn | |
| 3287 (auto-show-make-point-visible) | |
| 3288 (sit-for blink-matching-delay))) | |
| 3289 (goto-char blinkpos) | |
| 3290 (lmessage 'command "Matches %s" | |
| 3291 ;; Show what precedes the open in its line, if anything. | |
| 3292 (if (save-excursion | |
| 3293 (skip-chars-backward " \t") | |
| 3294 (not (bolp))) | |
| 3295 (buffer-substring (progn (beginning-of-line) (point)) | |
| 3296 (1+ blinkpos)) | |
| 3297 ;; Show what follows the open in its line, if anything. | |
| 3298 (if (save-excursion | |
| 3299 (forward-char 1) | |
| 3300 (skip-chars-forward " \t") | |
| 3301 (not (eolp))) | |
| 3302 (buffer-substring blinkpos | |
| 3303 (progn (end-of-line) (point))) | |
| 3304 ;; Otherwise show the previous nonblank line, | |
| 3305 ;; if there is one. | |
| 3306 (if (save-excursion | |
| 3307 (skip-chars-backward "\n \t") | |
| 3308 (not (bobp))) | |
| 3309 (concat | |
| 3310 (buffer-substring (progn | |
| 3311 (skip-chars-backward "\n \t") | |
| 3312 (beginning-of-line) | |
| 3313 (point)) | |
| 3314 (progn (end-of-line) | |
| 3315 (skip-chars-backward " \t") | |
| 3316 (point))) | |
| 3317 ;; Replace the newline and other whitespace with `...'. | |
| 3318 "..." | |
| 3319 (buffer-substring blinkpos (1+ blinkpos))) | |
| 3320 ;; There is nothing to show except the char itself. | |
| 3321 (buffer-substring blinkpos (1+ blinkpos)))))))) | |
| 3322 (cond (mismatch | |
| 3323 (display-message 'no-log "Mismatched parentheses")) | |
| 3324 ((not blink-matching-paren-distance) | |
| 3325 (display-message 'no-log "Unmatched parenthesis")))))))) | |
| 3326 | |
| 3327 ;Turned off because it makes dbx bomb out. | |
| 3328 (setq blink-paren-function 'blink-matching-open) | |
| 3329 | |
| 3330 | |
| 3331 ;; XEmacs: Some functions moved to cmdloop.el: | |
| 3332 ;; keyboard-quit | |
| 3333 ;; buffer-quit-function | |
| 3334 ;; keyboard-escape-quit | |
| 3335 | |
| 3336 (defun assoc-ignore-case (key alist) | |
| 3337 "Like `assoc', but assumes KEY is a string and ignores case when comparing." | |
| 801 | 3338 (assoc* key alist :test #'equalp)) |
| 428 | 3339 |
| 3340 | |
| 442 | 3341 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
| 3342 ;; mail composition code ;; | |
| 3343 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
| 3344 | |
| 1333 | 3345 ;; BEGIN SYNCHED WITH FSF 21.2. |
| 3346 | |
| 2768 | 3347 (defcustom mail-user-agent 'xemacs-default-mail-user-agent |
| 428 | 3348 "*Your preference for a mail composition package. |
| 1333 | 3349 Various Emacs Lisp packages (e.g. Reporter) require you to compose an |
| 428 | 3350 outgoing email message. This variable lets you specify which |
| 3351 mail-sending package you prefer. | |
| 3352 | |
| 2768 | 3353 Valid values may include: |
| 3354 | |
| 3355 `vm-user-agent' -- use Kyle Jones' VM, as documented in the `(vm)' | |
| 3356 Info node. Compatible with `sendmail-user-agent' | |
| 3357 and can handle attachments and non-ASCII content, | |
| 3358 which the former can't. | |
| 3359 `sendmail-user-agent' -- use the default, bare-bones, Emacs Mail | |
| 3360 package. See Info node `(xemacs)Sending Mail'. | |
| 1333 | 3361 `mh-e-user-agent' -- use the Emacs interface to the MH mail system. |
| 3362 See Info node `(mh-e)'. | |
| 3363 `message-user-agent' -- use the Gnus Message package. | |
| 3364 See Info node `(message)'. | |
| 3365 `gnus-user-agent' -- like `message-user-agent', but with Gnus | |
| 3366 paraphernalia, particularly the Gcc: header for | |
| 3367 archiving. | |
| 428 | 3368 |
| 2768 | 3369 If you examine the value of this variable before setting it or composing a |
| 3370 mail, it will have another value, `xemacs-default-mail-user-agent'--this is to | |
| 3371 allow XEmacs to suggest that you use another email client instead of | |
| 3372 `sendmail-user-agent'. The latter, while part of the base XEmacs Lisp code, | |
| 3373 and very lightweight, doesn't support MIME, a considerable disadvantage | |
| 3374 today. | |
| 3375 | |
| 428 | 3376 Additional valid symbols may be available; check with the author of |
| 1333 | 3377 your package for details. The function should return non-nil if it |
| 3378 succeeds. | |
| 3379 | |
| 3380 See also `read-mail-command' concerning reading mail." | |
| 2768 | 3381 :type '(radio (function-item :tag "VM mail package" |
| 3382 :format "%t\n" | |
| 3383 vm-user-agent) | |
| 3384 (function-item :tag "Bare-bones Emacs mail" | |
| 428 | 3385 :format "%t\n" |
| 3386 sendmail-user-agent) | |
| 1333 | 3387 (function-item :tag "Emacs interface to MH" |
| 3388 :format "%t\n" | |
| 3389 mh-e-user-agent) | |
| 3390 (function-item :tag "Gnus Message package" | |
| 428 | 3391 :format "%t\n" |
| 3392 message-user-agent) | |
| 1333 | 3393 (function-item :tag "Gnus Message with full Gnus features" |
| 3394 :format "%t\n" | |
| 3395 gnus-user-agent) | |
| 428 | 3396 (function :tag "Other")) |
| 3397 :group 'mail) | |
| 3398 | |
| 3399 (defun define-mail-user-agent (symbol composefunc sendfunc | |
| 3400 &optional abortfunc hookvar) | |
| 3401 "Define a symbol to identify a mail-sending package for `mail-user-agent'. | |
| 3402 | |
| 3403 SYMBOL can be any Lisp symbol. Its function definition and/or | |
| 3404 value as a variable do not matter for this usage; we use only certain | |
| 3405 properties on its property list, to encode the rest of the arguments. | |
| 3406 | |
| 3407 COMPOSEFUNC is program callable function that composes an outgoing | |
| 3408 mail message buffer. This function should set up the basics of the | |
| 3409 buffer without requiring user interaction. It should populate the | |
| 3410 standard mail headers, leaving the `to:' and `subject:' headers blank | |
| 3411 by default. | |
| 3412 | |
| 3413 COMPOSEFUNC should accept several optional arguments--the same | |
| 3414 arguments that `compose-mail' takes. See that function's documentation. | |
| 3415 | |
| 3416 SENDFUNC is the command a user would run to send the message. | |
| 3417 | |
| 3418 Optional ABORTFUNC is the command a user would run to abort the | |
| 3419 message. For mail packages that don't have a separate abort function, | |
| 3420 this can be `kill-buffer' (the equivalent of omitting this argument). | |
| 3421 | |
| 3422 Optional HOOKVAR is a hook variable that gets run before the message | |
| 3423 is actually sent. Callers that use the `mail-user-agent' may | |
| 3424 install a hook function temporarily on this hook variable. | |
| 3425 If HOOKVAR is nil, `mail-send-hook' is used. | |
| 3426 | |
| 3427 The properties used on SYMBOL are `composefunc', `sendfunc', | |
| 3428 `abortfunc', and `hookvar'." | |
| 3429 (put symbol 'composefunc composefunc) | |
| 3430 (put symbol 'sendfunc sendfunc) | |
| 3431 (put symbol 'abortfunc (or abortfunc 'kill-buffer)) | |
| 3432 (put symbol 'hookvar (or hookvar 'mail-send-hook))) | |
| 3433 | |
| 2768 | 3434 (define-mail-user-agent 'vm-user-agent |
| 3435 'vm-compose-mail | |
| 3436 'vm-mail-send-and-exit) | |
| 3437 | |
| 428 | 3438 (define-mail-user-agent 'sendmail-user-agent |
| 3439 'sendmail-user-agent-compose 'mail-send-and-exit) | |
| 3440 | |
| 2768 | 3441 ;; Recent GNU sendmail.el does have MIME support, but it's buggy (as of |
| 3442 ;; 2005-05-01.) For example, if you FCC to a file more than once with | |
| 3443 ;; different coding systems, your non-ASCII data will get | |
| 3444 ;; trashed. quoted-printable encoding isn't done by default, attachments | |
| 3445 ;; just add a line: | |
| 3446 ;; | |
| 3447 ;; ===File /path/to/file/here================= | |
| 3448 ;; | |
| 3449 ;; the file's contents, | |
| 3450 ;; | |
| 3451 ;; =========================================== | |
| 3452 ;; | |
| 3453 ;; and hope for the best. Not code we want to use, IMO. | |
| 3454 | |
| 4293 | 3455 (defvar xemacs-default-composefunc-dont-nag nil |
| 3456 "Disable the `xemacs-default-composefunc' nagging; for bug reports.") | |
| 3457 | |
| 2768 | 3458 (defun xemacs-default-composefunc (&rest args) |
| 3459 "Warn that the default mail-reading package is heinously underfeatured; | |
| 3460 compose a mail using it, all the same. " | |
| 4293 | 3461 (unless (or noninteractive xemacs-default-composefunc-dont-nag) |
| 2977 | 3462 (warn " |
| 2768 | 3463 |
| 3464 Defaulting to the GNU Emacs-derived `sendmail.el' mail client. This facility, | |
| 3465 while part of base XEmacs, is heinously underfeatured, and not going to get | |
| 3466 better in the medium term. We include it so that bug reports work without | |
| 3467 packages; we suggest that you choose and/or install one of the other mail | |
| 3468 clients from packages if you're doing something other than M-x | |
| 3469 report-xemacs-bug , or even if you are reporting bugs regularly. | |
| 3470 | |
| 3471 To choose a package from those installed, click on \"Options\" -> | |
| 3472 \"Internet\" -> \"Compose Mail With ...\" and decide on one from the | |
| 3473 list. Gnus and VM are full-featured and have active user communities. | |
| 3474 | |
| 3475 To disable this warning and stick with the old behavior, you can explicitly | |
| 2977 | 3476 initialize `mail-user-agent' to 'sendmail-user-agent . ")) |
| 2768 | 3477 (setq mail-user-agent 'sendmail-user-agent) |
| 3478 (apply (get 'sendmail-user-agent 'composefunc) args)) | |
| 3479 | |
| 3480 (defun xemacs-default-sendfunc (&rest args) | |
| 3481 "Set `mail-user-agent' to `sendmail-user-agent'; call the send function | |
| 3482 associated with that package, passing it the supplied arguments. " | |
| 3483 (setq mail-user-agent 'sendmail-user-agent) | |
| 3484 (apply (get 'sendmail-user-agent 'sendfunc) args)) | |
| 3485 | |
| 3486 (define-mail-user-agent 'xemacs-default-mail-user-agent | |
| 3487 'xemacs-default-composefunc 'xemacs-default-sendfunc) | |
| 3488 | |
| 428 | 3489 (define-mail-user-agent 'message-user-agent |
| 3490 'message-mail 'message-send-and-exit | |
| 3491 'message-kill-buffer 'message-send-hook) | |
| 3492 | |
| 1333 | 3493 (defun rfc822-goto-eoh () |
| 3494 ;; Go to header delimiter line in a mail message, following RFC822 rules | |
| 3495 (goto-char (point-min)) | |
| 3496 (while (looking-at "^[^: \n]+:\\|^[ \t]") | |
| 3497 (forward-line 1)) | |
| 3498 (point)) | |
| 3499 | |
| 428 | 3500 (defun sendmail-user-agent-compose (&optional to subject other-headers continue |
| 3501 switch-function yank-action | |
| 3502 send-actions) | |
| 3503 (if switch-function | |
| 3504 (let ((special-display-buffer-names nil) | |
| 3505 (special-display-regexps nil) | |
| 3506 (same-window-buffer-names nil) | |
| 3507 (same-window-regexps nil)) | |
| 3508 (funcall switch-function "*mail*"))) | |
| 3509 (let ((cc (cdr (assoc-ignore-case "cc" other-headers))) | |
| 1333 | 3510 (in-reply-to (cdr (assoc-ignore-case "in-reply-to" other-headers))) |
| 3511 (body (cdr (assoc-ignore-case "body" other-headers)))) | |
| 776 | 3512 (or (declare-fboundp |
| 3513 (mail continue to subject in-reply-to cc yank-action send-actions)) | |
| 428 | 3514 continue |
| 3515 (error "Message aborted")) | |
| 3516 (save-excursion | |
| 1333 | 3517 (rfc822-goto-eoh) |
| 428 | 3518 (while other-headers |
| 1333 | 3519 (unless (member* (car (car other-headers)) |
| 3520 '("in-reply-to" "cc" "body") | |
| 3521 :test 'equalp) | |
| 428 | 3522 (insert (car (car other-headers)) ": " |
| 3523 (cdr (car other-headers)) "\n")) | |
| 3524 (setq other-headers (cdr other-headers))) | |
| 1333 | 3525 (when body |
| 3526 (forward-line 1) | |
| 3527 (insert body)) | |
| 428 | 3528 t))) |
| 3529 | |
| 3530 (define-mail-user-agent 'mh-e-user-agent | |
| 1333 | 3531 'mh-smail-batch 'mh-send-letter 'mh-fully-kill-draft |
| 428 | 3532 'mh-before-send-letter-hook) |
| 3533 | |
| 3534 (defun compose-mail (&optional to subject other-headers continue | |
| 3535 switch-function yank-action send-actions) | |
| 3536 "Start composing a mail message to send. | |
| 3537 This uses the user's chosen mail composition package | |
| 3538 as selected with the variable `mail-user-agent'. | |
| 3539 The optional arguments TO and SUBJECT specify recipients | |
| 3540 and the initial Subject field, respectively. | |
| 3541 | |
| 3542 OTHER-HEADERS is an alist specifying additional | |
| 3543 header fields. Elements look like (HEADER . VALUE) where both | |
| 3544 HEADER and VALUE are strings. | |
| 3545 | |
| 3546 CONTINUE, if non-nil, says to continue editing a message already | |
| 3547 being composed. | |
| 3548 | |
| 3549 SWITCH-FUNCTION, if non-nil, is a function to use to | |
| 3550 switch to and display the buffer used for mail composition. | |
| 3551 | |
| 3552 YANK-ACTION, if non-nil, is an action to perform, if and when necessary, | |
| 3553 to insert the raw text of the message being replied to. | |
| 3554 It has the form (FUNCTION . ARGS). The user agent will apply | |
| 3555 FUNCTION to ARGS, to insert the raw text of the original message. | |
| 3556 \(The user agent will also run `mail-citation-hook', *after* the | |
| 3557 original text has been inserted in this way.) | |
| 3558 | |
| 3559 SEND-ACTIONS is a list of actions to call when the message is sent. | |
| 3560 Each action has the form (FUNCTION . ARGS)." | |
| 3561 (interactive | |
| 3562 (list nil nil nil current-prefix-arg)) | |
| 3563 (let ((function (get mail-user-agent 'composefunc))) | |
| 3564 (funcall function to subject other-headers continue | |
| 3565 switch-function yank-action send-actions))) | |
| 3566 | |
| 3567 (defun compose-mail-other-window (&optional to subject other-headers continue | |
| 3568 yank-action send-actions) | |
| 3569 "Like \\[compose-mail], but edit the outgoing message in another window." | |
| 3570 (interactive | |
| 3571 (list nil nil nil current-prefix-arg)) | |
| 3572 (compose-mail to subject other-headers continue | |
| 3573 'switch-to-buffer-other-window yank-action send-actions)) | |
| 3574 | |
| 3575 | |
| 3576 (defun compose-mail-other-frame (&optional to subject other-headers continue | |
| 3577 yank-action send-actions) | |
| 3578 "Like \\[compose-mail], but edit the outgoing message in another frame." | |
| 3579 (interactive | |
| 3580 (list nil nil nil current-prefix-arg)) | |
| 3581 (compose-mail to subject other-headers continue | |
| 3582 'switch-to-buffer-other-frame yank-action send-actions)) | |
| 3583 | |
| 3584 | |
| 442 | 3585 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
| 3586 ;; set variable ;; | |
| 3587 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
| 3588 | |
| 1333 | 3589 (defvar set-variable-value-history nil |
| 3590 "History of values entered with `set-variable'.") | |
| 3591 | |
| 428 | 3592 (defun set-variable (var val) |
| 3593 "Set VARIABLE to VALUE. VALUE is a Lisp object. | |
| 1333 | 3594 When using this interactively, enter a Lisp object for VALUE. |
| 428 | 3595 If you want VALUE to be a string, you must surround it with doublequotes. |
| 1333 | 3596 VALUE is used literally, not evaluated. |
| 3597 | |
| 428 | 3598 If VARIABLE is a specifier, VALUE is added to it as an instantiator in |
| 3599 the 'global locale with nil tag set (see `set-specifier'). | |
| 3600 | |
| 3601 If VARIABLE has a `variable-interactive' property, that is used as if | |
| 1333 | 3602 it were the arg to `interactive' (which see) to interactively read VALUE. |
| 3603 | |
| 3604 If VARIABLE has been defined with `defcustom', then the type information | |
| 3605 in the definition is used to check that VALUE is valid." | |
| 428 | 3606 (interactive |
| 1333 | 3607 (let* ((default-var (variable-at-point)) |
| 3608 (var (if (symbolp default-var) | |
| 3609 (read-variable (format "Set variable (default %s): " default-var) | |
| 3610 default-var) | |
| 3611 (read-variable "Set variable: "))) | |
| 3612 (minibuffer-help-form '(describe-variable var)) | |
| 3613 (prop (get var 'variable-interactive)) | |
| 3614 (prompt (format "Set %s to value: " var)) | |
| 3615 (val (if prop | |
| 3616 ;; Use VAR's `variable-interactive' property | |
| 3617 ;; as an interactive spec for prompting. | |
| 3618 (call-interactively `(lambda (arg) | |
| 3619 (interactive ,prop) | |
| 3620 arg)) | |
| 3621 (read | |
| 3622 (read-string prompt nil | |
| 3623 'set-variable-value-history))))) | |
| 3624 (list var val))) | |
| 3625 | |
| 3626 (let ((type (get var 'custom-type))) | |
| 3627 (when type | |
| 3628 ;; Match with custom type. | |
| 3629 (require 'cus-edit) | |
| 3630 (setq type (widget-convert type)) | |
| 3631 (unless (widget-apply type :match val) | |
| 3632 (error "Value `%S' does not match type %S of %S" | |
| 3633 val (car type) var)))) | |
| 428 | 3634 (if (and (boundp var) (specifierp (symbol-value var))) |
| 3635 (set-specifier (symbol-value var) val) | |
| 1333 | 3636 (set var val)) |
| 3637 | |
| 3638 ;; Force a thorough redisplay for the case that the variable | |
| 3639 ;; has an effect on the display, like `tab-width' has. | |
| 3640 (force-mode-line-update)) | |
| 3641 | |
| 3642 | |
| 3643 | |
| 3644 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
| 3645 ;; forking a twin copy of a buffer ;; | |
| 3646 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
| 3647 | |
| 3648 (defvar clone-buffer-hook nil | |
| 3649 "Normal hook to run in the new buffer at the end of `clone-buffer'.") | |
| 3650 | |
| 3651 (defun clone-process (process &optional newname) | |
| 3652 "Create a twin copy of PROCESS. | |
| 3653 If NEWNAME is nil, it defaults to PROCESS' name; | |
| 3654 NEWNAME is modified by adding or incrementing <N> at the end as necessary. | |
| 3655 If PROCESS is associated with a buffer, the new process will be associated | |
| 3656 with the current buffer instead. | |
| 3657 Returns nil if PROCESS has already terminated." | |
| 3658 (setq newname (or newname (process-name process))) | |
| 3659 (if (string-match "<[0-9]+>\\'" newname) | |
| 3660 (setq newname (substring newname 0 (match-beginning 0)))) | |
| 3661 (when (memq (process-status process) '(run stop open)) | |
| 3662 (let* ((process-connection-type (process-tty-name process)) | |
| 3663 (old-kwoq (process-kill-without-query process nil)) | |
| 3664 (new-process | |
| 3665 (if (memq (process-status process) '(open)) | |
| 3666 (apply 'open-network-stream newname | |
| 3667 (if (process-buffer process) (current-buffer)) | |
| 3668 ;; FSF: (process-contact process) | |
| 3669 (process-command process)) | |
| 3670 (apply 'start-process newname | |
| 3671 (if (process-buffer process) (current-buffer)) | |
| 3672 (process-command process))))) | |
| 3673 (process-kill-without-query new-process old-kwoq) | |
| 3674 (process-kill-without-query process old-kwoq) | |
| 3675 ;; FSF 21.2: | |
| 3676 ; (set-process-inherit-coding-system-flag | |
| 3677 ; new-process (process-inherit-coding-system-flag process)) | |
| 3678 (set-process-filter new-process (process-filter process)) | |
| 3679 (set-process-sentinel new-process (process-sentinel process)) | |
| 3680 new-process))) | |
| 3681 | |
| 3682 ;; things to maybe add (currently partly covered by `funcall mode': | |
| 3683 ;; - syntax-table | |
| 3684 ;; - overlays | |
| 3685 (defun clone-buffer (&optional newname display-flag) | |
| 3686 "Create a twin copy of the current buffer. | |
| 3687 If NEWNAME is nil, it defaults to the current buffer's name; | |
| 3688 NEWNAME is modified by adding or incrementing <N> at the end as necessary. | |
| 3689 | |
| 3690 If DISPLAY-FLAG is non-nil, the new buffer is shown with `pop-to-buffer'. | |
| 3691 This runs the normal hook `clone-buffer-hook' in the new buffer | |
| 3692 after it has been set up properly in other respects." | |
| 3693 (interactive (list (if current-prefix-arg (read-string "Name: ")) | |
| 3694 t)) | |
| 3695 (if buffer-file-name | |
| 3696 (error "Cannot clone a file-visiting buffer")) | |
| 3697 (if (get major-mode 'no-clone) | |
| 3698 (error "Cannot clone a buffer in %s mode" mode-name)) | |
| 3699 (setq newname (or newname (buffer-name))) | |
| 3700 (if (string-match "<[0-9]+>\\'" newname) | |
| 3701 (setq newname (substring newname 0 (match-beginning 0)))) | |
| 3702 (let ((buf (current-buffer)) | |
| 3703 (ptmin (point-min)) | |
| 3704 (ptmax (point-max)) | |
| 3705 (pt (point)) | |
| 3706 (mk (mark t)) ;(if mark-active (mark t))) | |
| 3707 (modified (buffer-modified-p)) | |
| 3708 (mode major-mode) | |
| 3709 (lvars (buffer-local-variables)) | |
| 3710 (process (get-buffer-process (current-buffer))) | |
| 3711 (new (generate-new-buffer (or newname (buffer-name))))) | |
| 3712 (save-restriction | |
| 3713 (widen) | |
| 3714 (with-current-buffer new | |
| 3715 (insert-buffer-substring buf))) | |
| 3716 (with-current-buffer new | |
| 3717 (narrow-to-region ptmin ptmax) | |
| 3718 (goto-char pt) | |
| 3719 (if mk (set-mark mk)) | |
| 3720 (set-buffer-modified-p modified) | |
| 3721 | |
| 3722 ;; Clone the old buffer's process, if any. | |
| 3723 (when process (clone-process process)) | |
| 3724 | |
| 3725 ;; Now set up the major mode. | |
| 3726 (funcall mode) | |
| 3727 | |
| 3728 ;; Set up other local variables. | |
|
4783
e29fcfd8df5f
Eliminate most core code byte-compile warnings.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4687
diff
changeset
|
3729 (mapc (lambda (v) |
|
e29fcfd8df5f
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Aidan Kehoe <kehoea@parhasard.net>
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4687
diff
changeset
|
3730 (condition-case () ;in case var is read-only |
|
e29fcfd8df5f
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Aidan Kehoe <kehoea@parhasard.net>
parents:
4687
diff
changeset
|
3731 (if (symbolp v) |
|
e29fcfd8df5f
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Aidan Kehoe <kehoea@parhasard.net>
parents:
4687
diff
changeset
|
3732 (makunbound v) |
|
e29fcfd8df5f
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Aidan Kehoe <kehoea@parhasard.net>
parents:
4687
diff
changeset
|
3733 (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
|
3734 (error nil))) |
|
e29fcfd8df5f
Eliminate most core code byte-compile warnings.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4687
diff
changeset
|
3735 lvars) |
| 1333 | 3736 |
| 3737 ;; Run any hooks (typically set up by the major mode | |
| 3738 ;; for cloning to work properly). | |
| 3739 (run-hooks 'clone-buffer-hook)) | |
| 3740 (if display-flag (pop-to-buffer new)) | |
| 3741 new)) | |
| 3742 | |
| 3743 | |
| 3744 (defun clone-indirect-buffer (newname display-flag &optional norecord) | |
| 3745 "Create an indirect buffer that is a twin copy of the current buffer. | |
| 3746 | |
| 3747 Give the indirect buffer name NEWNAME. Interactively, read NEW-NAME | |
| 3748 from the minibuffer when invoked with a prefix arg. If NEWNAME is nil | |
| 3749 or if not called with a prefix arg, NEWNAME defaults to the current | |
| 3750 buffer's name. The name is modified by adding a `<N>' suffix to it | |
| 3751 or by incrementing the N in an existing suffix. | |
| 3752 | |
| 3753 DISPLAY-FLAG non-nil means show the new buffer with `pop-to-buffer'. | |
| 3754 This is always done when called interactively. | |
| 3755 | |
| 3756 Optional last arg NORECORD non-nil means do not put this buffer at the | |
| 3757 front of the list of recently selected ones." | |
| 3758 (interactive (list (if current-prefix-arg | |
| 3759 (read-string "BName of indirect buffer: ")) | |
| 3760 t)) | |
| 3761 (setq newname (or newname (buffer-name))) | |
| 3762 (if (string-match "<[0-9]+>\\'" newname) | |
| 3763 (setq newname (substring newname 0 (match-beginning 0)))) | |
| 3764 (let* ((name (generate-new-buffer-name newname)) | |
| 3765 (buffer (make-indirect-buffer (current-buffer) name t))) | |
| 3766 (when display-flag | |
| 3767 (pop-to-buffer buffer norecord)) | |
| 3768 buffer)) | |
| 3769 | |
| 3770 | |
| 3771 (defun clone-indirect-buffer-other-window (buffer &optional norecord) | |
| 3772 "Create an indirect buffer that is a twin copy of BUFFER. | |
| 3773 Select the new buffer in another window. | |
| 3774 Optional second arg NORECORD non-nil means do not put this buffer at | |
| 3775 the front of the list of recently selected ones." | |
| 3776 (interactive "bClone buffer in other window: ") | |
| 3777 (let ((pop-up-windows t)) | |
| 3778 (set-buffer buffer) | |
| 3779 (clone-indirect-buffer nil t norecord))) | |
| 3780 | |
| 3781 ;; END SYNCHED WITH FSF 21.2. | |
| 442 | 3782 |
| 428 | 3783 |
| 442 | 3784 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
| 3785 ;; case changing code ;; | |
| 3786 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
| 428 | 3787 |
| 3788 ;; A bunch of stuff was moved elsewhere: | |
| 3789 ;; completion-list-mode-map | |
| 3790 ;; completion-reference-buffer | |
| 3791 ;; completion-base-size | |
| 3792 ;; delete-completion-window | |
| 3793 ;; previous-completion | |
| 3794 ;; next-completion | |
| 3795 ;; choose-completion | |
| 3796 ;; choose-completion-delete-max-match | |
| 3797 ;; choose-completion-string | |
| 3798 ;; completion-list-mode | |
| 3799 ;; completion-fixup-function | |
| 3800 ;; completion-setup-function | |
| 3801 ;; switch-to-completions | |
| 3802 ;; event stuffs | |
| 3803 ;; keypad stuffs | |
| 3804 | |
| 3805 ;; The rest of this file is not in Lisp in FSF | |
| 3806 (defun capitalize-region-or-word (arg) | |
| 3807 "Capitalize the selected region or the following word (or ARG words)." | |
| 3808 (interactive "p") | |
| 3809 (if (region-active-p) | |
| 3810 (capitalize-region (region-beginning) (region-end)) | |
| 3811 (capitalize-word arg))) | |
| 3812 | |
| 3813 (defun upcase-region-or-word (arg) | |
| 3814 "Upcase the selected region or the following word (or ARG words)." | |
| 3815 (interactive "p") | |
| 3816 (if (region-active-p) | |
| 3817 (upcase-region (region-beginning) (region-end)) | |
| 3818 (upcase-word arg))) | |
| 3819 | |
| 3820 (defun downcase-region-or-word (arg) | |
| 3821 "Downcase the selected region or the following word (or ARG words)." | |
| 3822 (interactive "p") | |
| 3823 (if (region-active-p) | |
| 3824 (downcase-region (region-beginning) (region-end)) | |
| 3825 (downcase-word arg))) | |
| 3826 | |
| 442 | 3827 ;; #### not localized |
| 3828 (defvar uncapitalized-title-words | |
| 3829 '("the" "a" "an" "in" "of" "for" "to" "and" "but" "at" "on" "as" "by")) | |
| 3830 | |
| 3831 (defvar uncapitalized-title-word-regexp | |
| 3832 (concat "[ \t]*\\(" (mapconcat #'identity uncapitalized-title-words "\\|") | |
| 3833 "\\)\\>")) | |
| 3834 | |
| 3835 (defun capitalize-string-as-title (string) | |
| 3836 "Capitalize the words in the string, except for small words (as in titles). | |
| 3837 The words not capitalized are specified in `uncapitalized-title-words'." | |
| 3838 (let ((buffer (get-buffer-create " *capitalize-string-as-title*"))) | |
| 3839 (unwind-protect | |
| 3840 (progn | |
| 3841 (insert-string string buffer) | |
| 3842 (capitalize-region-as-title 1 (point-max buffer) buffer) | |
| 3843 (buffer-string buffer)) | |
| 3844 (kill-buffer buffer)))) | |
| 3845 | |
| 3846 (defun capitalize-region-as-title (b e &optional buffer) | |
| 3847 "Capitalize the words in the region, except for small words (as in titles). | |
| 3848 The words not capitalized are specified in `uncapitalized-title-words'." | |
| 3849 (interactive "r") | |
| 3850 (save-excursion | |
| 3851 (and buffer | |
| 3852 (set-buffer buffer)) | |
| 3853 (save-restriction | |
| 3854 (narrow-to-region b e) | |
| 3855 (goto-char (point-min)) | |
| 3856 (let ((first t)) | |
| 3857 (while (< (point) (point-max)) | |
| 3858 (if (or first | |
| 3859 (not (looking-at uncapitalized-title-word-regexp))) | |
| 3860 (capitalize-word 1) | |
| 3861 (forward-word 1)) | |
| 3862 (setq first nil)))))) | |
| 3863 | |
| 3864 | |
| 3865 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
| 3866 ;; zmacs active region code ;; | |
| 3867 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
| 3868 | |
| 428 | 3869 ;; Most of the zmacs code is now in elisp. The only thing left in C |
| 3870 ;; are the variables zmacs-regions, zmacs-region-active-p and | |
| 3871 ;; zmacs-region-stays plus the function zmacs_update_region which | |
| 3872 ;; simply calls the lisp level zmacs-update-region. It must remain | |
| 3873 ;; for convenience, since it is called by core C code. | |
| 3874 | |
| 442 | 3875 ;; XEmacs |
| 3876 (defun activate-region () | |
| 3877 "Activate the region, if `zmacs-regions' is true. | |
| 3878 Setting `zmacs-regions' to true causes LISPM-style active regions to be used. | |
| 3879 This function has no effect if `zmacs-regions' is false." | |
| 3880 (interactive) | |
| 3881 (and zmacs-regions (zmacs-activate-region))) | |
| 3882 | |
| 3883 ;; XEmacs | |
| 3884 (defsubst region-exists-p () | |
| 3885 "Return t if the region exists. | |
| 3886 If active regions are in use (i.e. `zmacs-regions' is true), this means that | |
| 3887 the region is active. Otherwise, this means that the user has pushed | |
| 3888 a mark in this buffer at some point in the past. | |
| 3889 The functions `region-beginning' and `region-end' can be used to find the | |
| 502 | 3890 limits of the region. |
| 3891 | |
| 3892 You should use this, *NOT* `region-active-p', in a menu item | |
| 3893 specification that you want grayed out when the region is not active: | |
| 3894 | |
| 3895 [ ... ... :active (region-exists-p)] | |
| 3896 | |
| 3897 This correctly caters to the user's setting of `zmacs-regions'." | |
| 442 | 3898 (not (null (mark)))) |
| 3899 | |
| 3900 ;; XEmacs | |
| 3901 (defun region-active-p () | |
| 2611 | 3902 "Return non-nil if the region is active in the current buffer. |
| 442 | 3903 If `zmacs-regions' is true, this is equivalent to `region-exists-p'. |
| 502 | 3904 Otherwise, this function always returns false. |
| 3905 | |
| 3906 You should generally *NOT* use this in a menu item specification that you | |
| 3907 want grayed out when the region is not active. Instead, use this: | |
| 3908 | |
| 3909 [ ... ... :active (region-exists-p)] | |
| 3910 | |
| 3911 Which correctly caters to the user's setting of `zmacs-regions'." | |
| 2611 | 3912 (and zmacs-regions zmacs-region-extent |
| 3913 (eq (current-buffer) (zmacs-region-buffer)))) | |
| 442 | 3914 |
| 428 | 3915 (defvar zmacs-activate-region-hook nil |
| 3916 "Function or functions called when the region becomes active; | |
| 3917 see the variable `zmacs-regions'.") | |
| 3918 | |
| 3919 (defvar zmacs-deactivate-region-hook nil | |
| 3920 "Function or functions called when the region becomes inactive; | |
| 3921 see the variable `zmacs-regions'.") | |
| 3922 | |
| 3923 (defvar zmacs-update-region-hook nil | |
| 3924 "Function or functions called when the active region changes. | |
| 3925 This is called after each command that sets `zmacs-region-stays' to t. | |
| 3926 See the variable `zmacs-regions'.") | |
| 3927 | |
| 487 | 3928 (add-hook 'zmacs-deactivate-region-hook 'disown-selection) |
| 3929 (add-hook 'zmacs-activate-region-hook 'activate-region-as-selection) | |
| 3930 (add-hook 'zmacs-update-region-hook 'activate-region-as-selection) | |
| 3931 | |
| 428 | 3932 (defvar zmacs-region-extent nil |
| 3933 "The extent of the zmacs region; don't use this.") | |
| 3934 | |
| 3935 (defvar zmacs-region-rectangular-p nil | |
| 3936 "Whether the zmacs region is a rectangle; don't use this.") | |
| 3937 | |
| 3938 (defun zmacs-make-extent-for-region (region) | |
| 3939 ;; Given a region, this makes an extent in the buffer which holds that | |
| 3940 ;; region, for highlighting purposes. If the region isn't associated | |
| 3941 ;; with a buffer, this does nothing. | |
| 3942 (let ((buffer nil) | |
| 3943 (valid (and (extentp zmacs-region-extent) | |
| 3944 (extent-object zmacs-region-extent) | |
| 3945 (buffer-live-p (extent-object zmacs-region-extent)))) | |
| 3946 start end) | |
| 3947 (cond ((consp region) | |
| 3948 (setq start (min (car region) (cdr region)) | |
| 3949 end (max (car region) (cdr region)) | |
| 3950 valid (and valid | |
| 3951 (eq (marker-buffer (car region)) | |
| 3952 (extent-object zmacs-region-extent))) | |
| 3953 buffer (marker-buffer (car region)))) | |
| 3954 (t | |
| 3955 (signal 'error (list "Invalid region" region)))) | |
| 3956 | |
| 3957 (if valid | |
| 3958 nil | |
| 3959 ;; The condition case is in case any of the extents are dead or | |
| 3960 ;; otherwise incapacitated. | |
| 3961 (condition-case () | |
| 3962 (if (listp zmacs-region-extent) | |
| 3963 (mapc 'delete-extent zmacs-region-extent) | |
| 3964 (delete-extent zmacs-region-extent)) | |
| 3965 (error nil))) | |
| 3966 | |
| 3967 (if valid | |
| 3968 (set-extent-endpoints zmacs-region-extent start end) | |
| 3969 (setq zmacs-region-extent (make-extent start end buffer)) | |
| 3970 | |
| 3971 ;; Make the extent be closed on the right, which means that if | |
| 3972 ;; characters are inserted exactly at the end of the extent, the | |
| 3973 ;; extent will grow to cover them. This is important for shell | |
| 3974 ;; buffers - suppose one makes a region, and one end is at point-max. | |
| 3975 ;; If the shell produces output, that marker will remain at point-max | |
| 3976 ;; (its position will increase). So it's important that the extent | |
| 3977 ;; exhibit the same behavior, lest the region covered by the extent | |
| 3978 ;; (the visual indication), and the region between point and mark | |
| 3979 ;; (the actual region value) become different! | |
| 3980 (set-extent-property zmacs-region-extent 'end-open nil) | |
| 3981 | |
| 3982 ;; use same priority as mouse-highlighting so that conflicts between | |
| 3983 ;; the region extent and a mouse-highlighted extent are resolved by | |
| 3984 ;; the usual size-and-endpoint-comparison method. | |
| 3985 (set-extent-priority zmacs-region-extent mouse-highlight-priority) | |
| 3986 (set-extent-face zmacs-region-extent 'zmacs-region) | |
| 3987 | |
| 3988 ;; #### It might be better to actually break | |
| 3989 ;; default-mouse-track-next-move-rect out of mouse.el so that we | |
| 3990 ;; can use its logic here. | |
| 3991 (cond | |
| 3992 (zmacs-region-rectangular-p | |
| 3993 (setq zmacs-region-extent (list zmacs-region-extent)) | |
| 4222 | 3994 (when-fboundp #'default-mouse-track-next-move-rect |
| 3995 (default-mouse-track-next-move-rect start end zmacs-region-extent)) | |
| 428 | 3996 )) |
| 3997 | |
| 3998 zmacs-region-extent))) | |
| 3999 | |
| 4000 (defun zmacs-region-buffer () | |
| 4001 "Return the buffer containing the zmacs region, or nil." | |
| 4002 ;; #### this is horrible and kludgy! This stuff needs to be rethought. | |
| 4003 (and zmacs-regions zmacs-region-active-p | |
| 4004 (or (marker-buffer (mark-marker t)) | |
| 4005 (and (extent-live-p zmacs-region-extent) | |
| 4006 (buffer-live-p (extent-object zmacs-region-extent)) | |
| 4007 (extent-object zmacs-region-extent))))) | |
| 4008 | |
| 4009 (defun zmacs-activate-region () | |
| 4010 "Make the region between `point' and `mark' be active (highlighted), | |
| 4011 if `zmacs-regions' is true. Only a very small number of commands | |
| 4012 should ever do this. Calling this function will call the hook | |
| 4013 `zmacs-activate-region-hook', if the region was previously inactive. | |
| 4014 Calling this function ensures that the region stays active after the | |
| 4015 current command terminates, even if `zmacs-region-stays' is not set. | |
| 4016 Returns t if the region was activated (i.e. if `zmacs-regions' if t)." | |
| 4017 (if (not zmacs-regions) | |
| 4018 nil | |
| 4019 (setq zmacs-region-active-p t | |
| 4020 zmacs-region-stays t | |
| 4222 | 4021 zmacs-region-rectangular-p (and-boundp 'mouse-track-rectangle-p |
| 4022 mouse-track-rectangle-p)) | |
| 428 | 4023 (if (marker-buffer (mark-marker t)) |
| 4024 (zmacs-make-extent-for-region (cons (point-marker t) (mark-marker t)))) | |
| 4025 (run-hooks 'zmacs-activate-region-hook) | |
| 4026 t)) | |
| 4027 | |
| 4028 (defun zmacs-deactivate-region () | |
| 4029 "Make the region between `point' and `mark' no longer be active, | |
| 4030 if `zmacs-regions' is true. You shouldn't need to call this; the | |
| 4031 command loop calls it when appropriate. Calling this function will | |
| 4032 call the hook `zmacs-deactivate-region-hook', if the region was | |
| 4033 previously active. Returns t if the region had been active, nil | |
| 4034 otherwise." | |
| 4035 (if (not zmacs-region-active-p) | |
| 4036 nil | |
| 4037 (setq zmacs-region-active-p nil | |
| 4038 zmacs-region-stays nil | |
| 4039 zmacs-region-rectangular-p nil) | |
| 4040 (if zmacs-region-extent | |
| 4041 (let ((inhibit-quit t)) | |
| 4042 (if (listp zmacs-region-extent) | |
| 4043 (mapc 'delete-extent zmacs-region-extent) | |
| 4044 (delete-extent zmacs-region-extent)) | |
| 4045 (setq zmacs-region-extent nil))) | |
| 4046 (run-hooks 'zmacs-deactivate-region-hook) | |
| 4047 t)) | |
| 4048 | |
| 4049 (defun zmacs-update-region () | |
| 4050 "Update the highlighted region between `point' and `mark'. | |
| 4051 You shouldn't need to call this; the command loop calls it | |
| 4052 when appropriate. Calling this function will call the hook | |
| 4053 `zmacs-update-region-hook', if the region is active." | |
| 4054 (when zmacs-region-active-p | |
| 4055 (when (marker-buffer (mark-marker t)) | |
| 4056 (zmacs-make-extent-for-region (cons (point-marker t) | |
| 4057 (mark-marker t)))) | |
| 4058 (run-hooks 'zmacs-update-region-hook))) | |
| 4059 | |
| 442 | 4060 |
| 4061 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
| 4062 ;; message logging code ;; | |
| 4063 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
| 428 | 4064 |
| 4065 ;;; #### Should this be moved to a separate file, for clarity? | |
| 4066 ;;; -hniksic | |
| 4067 | |
| 4068 ;;; The `message-stack' is an alist of labels with messages; the first | |
| 4069 ;;; message in this list is always in the echo area. A call to | |
| 4070 ;;; `display-message' inserts a label/message pair at the head of the | |
| 4071 ;;; list, and removes any other pairs with that label. Calling | |
| 4072 ;;; `clear-message' causes any pair with matching label to be removed, | |
| 4073 ;;; and this may cause the displayed message to change or vanish. If | |
| 4074 ;;; the label arg is nil, the entire message stack is cleared. | |
| 4075 ;;; | |
| 4076 ;;; Message/error filtering will be a little tricker to implement than | |
| 4077 ;;; logging, since messages can be built up incrementally | |
| 4078 ;;; using clear-message followed by repeated calls to append-message | |
| 4079 ;;; (this happens with error messages). For messages which aren't | |
| 4080 ;;; created this way, filtering could be implemented at display-message | |
| 4081 ;;; very easily. | |
| 4082 ;;; | |
| 4083 ;;; Bits of the logging code are borrowed from log-messages.el by | |
| 4084 ;;; Robert Potter (rpotter@grip.cis.upenn.edu). | |
| 4085 | |
| 4086 ;; need this to terminate the currently-displayed message | |
| 4087 ;; ("Loading simple ...") | |
| 4088 (when (and | |
| 4089 (not (fboundp 'display-message)) | |
| 4090 (not (featurep 'debug))) | |
| 1346 | 4091 (set-device-clear-left-side nil nil) |
| 428 | 4092 (send-string-to-terminal "\n")) |
| 4093 | |
| 4094 (defvar message-stack nil | |
| 4095 "An alist of label/string pairs representing active echo-area messages. | |
| 4096 The first element in the list is currently displayed in the echo area. | |
| 4097 Do not modify this directly--use the `message' or | |
| 4098 `display-message'/`clear-message' functions.") | |
| 4099 | |
| 4100 (defvar remove-message-hook 'log-message | |
| 4101 "A function or list of functions to be called when a message is removed | |
| 4102 from the echo area at the bottom of the frame. The label of the removed | |
| 4103 message is passed as the first argument, and the text of the message | |
| 4104 as the second argument.") | |
| 4105 | |
| 4106 (defcustom log-message-max-size 50000 | |
| 4107 "Maximum size of the \" *Message-Log*\" buffer. See `log-message'." | |
| 4108 :type 'integer | |
| 4109 :group 'log-message) | |
| 4110 (make-compatible-variable 'message-log-max 'log-message-max-size) | |
| 4111 | |
| 4112 ;; We used to reject quite a lot of stuff here, but it was a bad idea, | |
| 4113 ;; for two reasons: | |
| 4114 ;; | |
| 4115 ;; a) In most circumstances, you *want* to see the message in the log. | |
| 4116 ;; The explicitly non-loggable messages should be marked as such by | |
| 4117 ;; the issuer. Gratuitous non-displaying of random regexps made | |
| 4118 ;; debugging harder, too (because various reasonable debugging | |
| 4119 ;; messages would get eaten). | |
| 4120 ;; | |
| 4121 ;; b) It slowed things down. Yes, visibly. | |
| 4122 ;; | |
| 4123 ;; So, I left only a few of the really useless ones on this kill-list. | |
| 4124 ;; | |
| 4125 ;; --hniksic | |
| 4126 (defcustom log-message-ignore-regexps | |
| 4127 '(;; Note: adding entries to this list slows down messaging | |
| 440 | 4128 ;; significantly. Wherever possible, use message labels. |
| 428 | 4129 |
| 4130 ;; Often-seen messages | |
| 4131 "\\`\\'" ; empty message | |
| 4132 "\\`\\(Beginning\\|End\\) of buffer\\'" | |
| 4133 ;;"^Quit$" | |
| 4134 ;; completions | |
| 4135 ;; Many packages print this -- impossible to categorize | |
| 4136 ;;"^Making completion list" | |
| 4137 ;; Gnus | |
| 4138 ;; "^No news is no news$" | |
| 4139 ;; "^No more\\( unread\\)? newsgroups$" | |
| 4140 ;; "^Opening [^ ]+ server\\.\\.\\." | |
| 4141 ;; "^[^:]+: Reading incoming mail" | |
| 4142 ;; "^Getting mail from " | |
| 4143 ;; "^\\(Generating Summary\\|Sorting threads\\|Making sparse threads\\|Scoring\\|Checking new news\\|Expiring articles\\|Sending\\)\\.\\.\\." | |
| 4144 ;; "^\\(Fetching headers for\\|Retrieving newsgroup\\|Reading active file\\)" | |
| 4145 ;; "^No more\\( unread\\)? articles" | |
| 4146 ;; "^Deleting article " | |
| 4147 ;; W3 | |
| 4148 ;; "^Parsed [0-9]+ of [0-9]+ ([0-9]+%)" | |
| 4149 ) | |
| 4150 "List of regular expressions matching messages which shouldn't be logged. | |
| 4151 See `log-message'. | |
| 4152 | |
| 3929 | 4153 Adding entries to this list slows down messaging significantly. Wherever |
| 4154 possible, messages which might need to be ignored should be labeled with | |
| 4155 'progress, 'prompt, or 'no-log, so they can be filtered by | |
| 4156 log-message-ignore-labels." | |
| 428 | 4157 :type '(repeat regexp) |
| 4158 :group 'log-message) | |
| 4159 | |
| 4160 (defcustom log-message-ignore-labels | |
| 4161 '(help-echo command progress prompt no-log garbage-collecting auto-saving) | |
| 4162 "List of symbols indicating labels of messages which shouldn't be logged. | |
| 4163 See `display-message' for some common labels. See also `log-message'." | |
| 4164 :type '(repeat (symbol :tag "Label")) | |
| 4165 :group 'log-message) | |
| 4166 | |
| 1703 | 4167 (defcustom redisplay-echo-area-function 'redisplay-echo-area |
| 4168 "The function to call to display echo area buffer." | |
| 4169 :type 'function | |
| 4170 :group 'log-message) | |
| 4171 | |
| 4172 (defcustom undisplay-echo-area-function nil | |
| 3929 | 4173 "The function to call to undisplay echo area buffer. |
| 4174 WARNING: any problem with your function is likely to result in an | |
| 4175 uninterruptible infinite loop. Use of custom functions is therefore not | |
| 4176 recommended." | |
| 4177 :type '(choice (const nil) | |
| 4178 function) | |
| 4179 :group 'log-message) | |
| 4180 | |
| 4181 (defvar undisplay-echo-area-resize-window-allowed t | |
| 4182 "INTERNAL USE ONLY. | |
| 4183 Guards against `undisplay-echo-area-resize-window' infloops. | |
| 4184 Touch this at your own risk.") | |
| 4185 | |
| 4186 (defun undisplay-echo-area-resize-window () | |
| 4187 "Resize idle echo area window to `resize-minibuffer-idle-height'. | |
| 4188 If either `resize-minibuffer-idle-height' or `resize-minibuffer-mode' is nil, | |
| 4189 does nothing. If `resize-minibuffer-window-exactly' is non-nil, always resize | |
| 4190 to this height exactly, otherwise if current height is no larger than this, | |
| 4191 leave it as is." | |
| 4192 (when (default-value undisplay-echo-area-resize-window-allowed) | |
| 4193 (setq-default undisplay-echo-area-resize-window-allowed nil) | |
| 4194 (let* ((mbw (minibuffer-window)) | |
| 4195 (height (window-height mbw))) | |
| 4196 (with-boundp '(resize-minibuffer-idle-height) | |
| 4197 (and resize-minibuffer-mode | |
| 4198 (numberp resize-minibuffer-idle-height) | |
| 4199 (> resize-minibuffer-idle-height 0) | |
| 4200 (unless (if resize-minibuffer-window-exactly | |
| 4201 (= resize-minibuffer-idle-height height) | |
| 4202 (<= resize-minibuffer-idle-height height)) | |
| 4203 (enlarge-window (- resize-minibuffer-idle-height height) | |
| 4204 nil mbw)))) | |
| 4205 (setq-default undisplay-echo-area-resize-window-allowed t)))) | |
| 1703 | 4206 |
| 428 | 4207 ;;Subsumed by view-lossage |
| 4208 ;; Not really, I'm adding it back by popular demand. -slb | |
| 4209 (defun show-message-log () | |
| 4210 "Show the \" *Message-Log*\" buffer, which contains old messages and errors." | |
| 4211 (interactive) | |
| 793 | 4212 (view-lossage t)) |
| 428 | 4213 |
| 4214 (defvar log-message-filter-function 'log-message-filter | |
| 4215 "Value must be a function of two arguments: a symbol (label) and | |
| 4216 a string (message). It should return non-nil to indicate a message | |
| 4217 should be logged. Possible values include 'log-message-filter and | |
| 4218 'log-message-filter-errors-only.") | |
| 4219 | |
| 4220 (defun log-message-filter (label message) | |
| 4221 "Default value of `log-message-filter-function'. | |
| 4222 Messages whose text matches one of the `log-message-ignore-regexps' | |
| 4223 or whose label appears in `log-message-ignore-labels' are not saved." | |
| 4224 (let ((r log-message-ignore-regexps) | |
| 4225 (ok (not (memq label log-message-ignore-labels)))) | |
| 4226 (save-match-data | |
| 4227 (while (and r ok) | |
| 4228 (when (string-match (car r) message) | |
| 4229 (setq ok nil)) | |
| 4230 (setq r (cdr r)))) | |
| 4231 ok)) | |
| 4232 | |
| 4233 (defun log-message-filter-errors-only (label message) | |
| 4234 "For use as the `log-message-filter-function'. Only logs error messages." | |
| 4235 (eq label 'error)) | |
| 4236 | |
| 4237 (defun log-message (label message) | |
| 4238 "Stuff a copy of the message into the \" *Message-Log*\" buffer, | |
| 4239 if it satisfies the `log-message-filter-function'. | |
| 4240 | |
| 4241 For use on `remove-message-hook'." | |
| 4242 (when (and (not noninteractive) | |
| 4243 (funcall log-message-filter-function label message)) | |
| 4244 ;; Use save-excursion rather than save-current-buffer because we | |
| 4245 ;; change the value of point. | |
| 4246 (save-excursion | |
| 4247 (set-buffer (get-buffer-create " *Message-Log*")) | |
| 4248 (goto-char (point-max)) | |
| 4249 ;(insert (concat (upcase (symbol-name label)) ": " message "\n")) | |
| 4250 (let (extent) | |
| 4251 ;; Mark multiline message with an extent, which `view-lossage' | |
| 4252 ;; will recognize. | |
| 793 | 4253 (save-match-data |
| 4254 (when (string-match "\n" message) | |
| 4255 (setq extent (make-extent (point) (point))) | |
| 4256 (set-extent-properties extent '(end-open nil message-multiline t))) | |
| 4257 ) | |
| 428 | 4258 (insert message "\n") |
| 4259 (when extent | |
| 4260 (set-extent-property extent 'end-open t))) | |
| 4261 (when (> (point-max) (max log-message-max-size (point-min))) | |
| 4262 ;; Trim log to ~90% of max size. | |
| 4263 (goto-char (max (- (point-max) | |
| 4264 (truncate (* 0.9 log-message-max-size))) | |
| 4265 (point-min))) | |
| 4266 (forward-line 1) | |
| 4267 (delete-region (point-min) (point)))))) | |
| 4268 | |
| 4269 (defun message-displayed-p (&optional return-string frame) | |
| 4270 "Return a non-nil value if a message is presently displayed in the\n\ | |
| 4271 minibuffer's echo area. If optional argument RETURN-STRING is non-nil,\n\ | |
| 4272 return a string containing the message, otherwise just return t." | |
| 4273 ;; by definition, a message is displayed if the echo area buffer is | |
| 4274 ;; non-empty (see also echo_area_active()). It had better also | |
| 4275 ;; be the case that message-stack is nil exactly when the echo area | |
| 4276 ;; is non-empty. | |
| 4277 (let ((buffer (get-buffer " *Echo Area*"))) | |
| 4278 (and (< (point-min buffer) (point-max buffer)) | |
| 4279 (if return-string | |
| 4280 (buffer-substring nil nil buffer) | |
| 4281 t)))) | |
| 4282 | |
| 4283 ;;; Returns the string which remains in the echo area, or nil if none. | |
| 4284 ;;; If label is nil, the whole message stack is cleared. | |
| 4285 (defun clear-message (&optional label frame stdout-p no-restore) | |
| 4286 "Remove any message with the given LABEL from the message-stack, | |
| 4287 erasing it from the echo area if it's currently displayed there. | |
| 4288 If a message remains at the head of the message-stack and NO-RESTORE | |
| 4289 is nil, it will be displayed. The string which remains in the echo | |
| 4290 area will be returned, or nil if the message-stack is now empty. | |
| 4291 If LABEL is nil, the entire message-stack is cleared. | |
| 3929 | 4292 STDOUT-P is ignored, except for output to stream devices. For streams, |
| 4293 STDOUT-P non-nil directs output to stdout, otherwise to stderr. \(This is | |
| 4294 used only in case of restoring an earlier message from the stack.) | |
| 428 | 4295 |
| 4296 Unless you need the return value or you need to specify a label, | |
| 4297 you should just use (message nil)." | |
| 4298 (or frame (setq frame (selected-frame))) | |
| 4299 (let ((clear-stream (and message-stack (eq 'stream (frame-type frame))))) | |
| 4300 (remove-message label frame) | |
| 502 | 4301 (let ((inhibit-read-only t)) |
| 428 | 4302 (erase-buffer " *Echo Area*")) |
| 1703 | 4303 (if undisplay-echo-area-function |
| 4304 (funcall undisplay-echo-area-function)) | |
| 1346 | 4305 ;; If outputting to the terminal, make sure we clear the left side. |
| 4306 (when (or clear-stream | |
| 4307 (and (eq 'stream (frame-type frame)) | |
| 4308 (not (device-left-side-clear-p (frame-device frame))))) | |
| 4309 (set-device-clear-left-side (frame-device frame) nil) | |
| 4310 (send-string-to-terminal ?\n stdout-p)) | |
| 428 | 4311 (if no-restore |
| 4312 nil ; just preparing to put another msg up | |
| 4313 (if message-stack | |
| 4314 (let ((oldmsg (cdr (car message-stack)))) | |
| 4315 (raw-append-message oldmsg frame stdout-p) | |
| 4316 oldmsg) | |
| 4317 ;; #### Should we (redisplay-echo-area) here? Messes some | |
| 4318 ;; things up. | |
| 4319 nil)))) | |
| 4320 | |
| 4321 (defun remove-message (&optional label frame) | |
| 4322 ;; If label is nil, we want to remove all matching messages. | |
| 4323 ;; Must reverse the stack first to log them in the right order. | |
| 4324 (let ((log nil)) | |
| 4325 (while (and message-stack | |
| 4326 (or (null label) ; null label means clear whole stack | |
| 4327 (eq label (car (car message-stack))))) | |
| 4328 (push (car message-stack) log) | |
| 4329 (setq message-stack (cdr message-stack))) | |
| 4330 (let ((s message-stack)) | |
| 4331 (while (cdr s) | |
| 4332 (let ((msg (car (cdr s)))) | |
| 4333 (if (eq label (car msg)) | |
| 4334 (progn | |
| 4335 (push msg log) | |
| 4336 (setcdr s (cdr (cdr s)))) | |
| 4337 (setq s (cdr s)))))) | |
| 4338 ;; (possibly) log each removed message | |
| 4339 (while log | |
| 793 | 4340 (with-trapping-errors |
| 4341 :operation 'remove-message-hook | |
| 4342 :class 'message-log | |
| 4343 :error-form (progn | |
| 4344 (setq remove-message-hook nil) | |
| 4345 (let ((inhibit-read-only t)) | |
| 4346 (erase-buffer " *Echo Area*"))) | |
| 4347 :resignal t | |
| 4348 (run-hook-with-args 'remove-message-hook | |
| 4349 (car (car log)) (cdr (car log)))) | |
| 428 | 4350 (setq log (cdr log))))) |
| 4351 | |
| 4352 (defun append-message (label message &optional frame stdout-p) | |
| 3929 | 4353 "Add MESSAGE to the message-stack, or append it to the existing text. |
| 4354 LABEL is the class of the message. If it is the same as that of the top of | |
| 4355 the message stack, MESSAGE is appended to the existing message, otherwise | |
| 4356 it is pushed on the stack. | |
| 4357 FRAME determines the minibuffer window to send the message to. | |
| 4358 STDOUT-P is ignored, except for output to stream devices. For streams, | |
| 4359 STDOUT-P non-nil directs output to stdout, otherwise to stderr." | |
| 428 | 4360 (or frame (setq frame (selected-frame))) |
| 1346 | 4361 ;; If outputting to the terminal, make sure output from anyone else clears |
| 4362 ;; the left side first, but don't do it ourselves, otherwise we won't be | |
| 4363 ;; able to append to an existing message. | |
| 4364 (if (eq 'stream (frame-type frame)) | |
| 4365 (set-device-clear-left-side (frame-device frame) nil)) | |
| 428 | 4366 (let ((top (car message-stack))) |
| 4367 (if (eq label (car top)) | |
| 4368 (setcdr top (concat (cdr top) message)) | |
| 4369 (push (cons label message) message-stack))) | |
| 1346 | 4370 (raw-append-message message frame stdout-p) |
| 4371 (if (eq 'stream (frame-type frame)) | |
| 4372 (set-device-clear-left-side (frame-device frame) t))) | |
| 428 | 4373 |
| 3929 | 4374 ;; Really append the message to the echo area. No fiddling with |
| 428 | 4375 ;; message-stack. |
| 4376 (defun raw-append-message (message &optional frame stdout-p) | |
| 4377 (unless (equal message "") | |
| 502 | 4378 (let ((inhibit-read-only t)) |
| 3652 | 4379 (with-current-buffer " *Echo Area*" |
| 4380 (insert-string message) | |
| 3929 | 4381 ;; #### This needs to be conditional; cf discussion by Stefan Monnier |
| 4382 ;; et al on emacs-devel in mid-to-late April 2007. One problem is | |
| 4383 ;; there is no known good way to guess whether the user wants to have | |
| 4384 ;; the echo area height changed on him asynchronously, especially | |
| 4385 ;; after message display. | |
| 4386 ;; There is also a problem where Lisp backtraces get sent to the echo | |
| 4387 ;; area, thus maxing out the window height. Unfortunately, it doesn't | |
| 4388 ;; return to a reasonable size very quickly. | |
| 4389 ;; It is not clear that echo area and minibuffer behavior should be | |
| 4390 ;; linked as we do here. It's OK for now; at least this obeys the | |
| 4391 ;; minibuffer resizing conventions which seem a pretty good guess | |
| 4392 ;; at user preference. | |
| 4393 (when resize-minibuffer-mode | |
| 4394 ;; #### interesting idea, unbearable implementation | |
| 4395 ;; (fill-region (point-min) (point-max)) | |
| 4396 ;; | |
| 4397 ;; #### We'd like to be able to do something like | |
| 4398 ;; | |
| 4399 ;; (save-window-excursion | |
| 4400 ;; (select-window (minibuffer-window frame)) | |
| 4401 ;; (resize-minibuffer-window)))) | |
| 4402 ;; | |
| 4403 ;; but that can't work, because the echo area isn't a real window! | |
| 4404 ;; We should fix that, but this is an approximation, duplicating the | |
| 4405 ;; resize-minibuffer code. | |
| 4406 (let* ((mbw (minibuffer-window frame)) | |
| 4407 (height (window-height mbw)) | |
| 4408 (lines (ceiling (/ (- (point-max) (point-min)) | |
| 4409 (- (window-width mbw) 1.0))))) | |
| 4410 (and (numberp resize-minibuffer-window-max-height) | |
| 4411 (> resize-minibuffer-window-max-height 0) | |
| 4412 (setq lines (min lines | |
| 4413 resize-minibuffer-window-max-height))) | |
| 4414 (or (if resize-minibuffer-window-exactly | |
| 4415 (= lines height) | |
| 4416 (<= lines height)) | |
| 4417 (enlarge-window (- lines height) nil mbw))))) | |
| 428 | 4418 |
| 4419 ;; Don't redisplay the echo area if we are executing a macro. | |
| 4420 (if (not executing-kbd-macro) | |
| 3929 | 4421 ;; Conditionalizing on the device type in this way isn't clean, but |
| 4422 ;; neither is having a device method, as I originally implemented | |
| 4423 ;; it: all non-stream devices behave in the same way. Perhaps | |
| 4424 ;; the cleanest way is to make the concept of a "redisplayable" | |
| 4425 ;; device, which stream devices are not. Look into this more if | |
| 4426 ;; we ever create another non-redisplayable device type (e.g. | |
| 4427 ;; processes? printers?). | |
| 428 | 4428 (if (eq 'stream (frame-type frame)) |
| 4429 (send-string-to-terminal message stdout-p (frame-device frame)) | |
| 1703 | 4430 (funcall redisplay-echo-area-function)))))) |
| 428 | 4431 |
| 4432 (defun display-message (label message &optional frame stdout-p) | |
| 4433 "Print a one-line message at the bottom of the frame. First argument | |
| 4434 LABEL is an identifier for this message. MESSAGE is the string to display. | |
| 4435 Use `clear-message' to remove a labelled message. | |
| 3929 | 4436 STDOUT-P is ignored, except for output to stream devices. For streams, |
| 4437 STDOUT-P non-nil directs output to stdout, otherwise to stderr. | |
| 428 | 4438 |
| 4439 Here are some standard labels (those marked with `*' are not logged | |
| 4440 by default--see the `log-message-ignore-labels' variable): | |
| 4441 message default label used by the `message' function | |
| 4442 error default label used for reporting errors | |
| 4443 * progress progress indicators like \"Converting... 45%\" | |
| 4444 * prompt prompt-like messages like \"I-search: foo\" | |
| 4445 * command helper command messages like \"Mark set\" | |
| 4446 * no-log messages that should never be logged" | |
| 4447 (clear-message label frame stdout-p t) | |
| 4448 (append-message label message frame stdout-p)) | |
| 4449 | |
| 4450 (defun current-message (&optional frame) | |
| 4451 "Return the current message in the echo area, or nil. | |
| 4452 The FRAME argument is currently unused." | |
| 4453 (cdr (car message-stack))) | |
| 4454 | |
| 4455 ;;; may eventually be frame-dependent | |
| 4456 (defun current-message-label (&optional frame) | |
| 4457 (car (car message-stack))) | |
| 4458 | |
| 4459 (defun message (fmt &rest args) | |
| 4460 "Print a one-line message at the bottom of the frame. | |
| 4461 The arguments are the same as to `format'. | |
| 4462 | |
| 4463 If the only argument is nil, clear any existing message; let the | |
| 4464 minibuffer contents show." | |
| 4465 ;; questionable junk in the C code | |
| 4466 ;; (if (framep default-minibuffer-frame) | |
| 4467 ;; (make-frame-visible default-minibuffer-frame)) | |
| 4468 (if (and (null fmt) (null args)) | |
| 4469 (prog1 nil | |
| 4470 (clear-message nil)) | |
| 4471 (let ((str (apply 'format fmt args))) | |
| 4472 (display-message 'message str) | |
| 4473 str))) | |
| 4474 | |
| 4475 (defun lmessage (label fmt &rest args) | |
| 4476 "Print a one-line message at the bottom of the frame. | |
| 4477 First argument LABEL is an identifier for this message. The rest of the | |
| 4478 arguments are the same as to `format'. | |
| 4479 | |
| 4480 See `display-message' for a list of standard labels." | |
| 4481 (if (and (null fmt) (null args)) | |
| 4482 (prog1 nil | |
| 4483 (clear-message label nil)) | |
| 4484 (let ((str (apply 'format fmt args))) | |
| 4485 (display-message label str) | |
| 4486 str))) | |
| 4487 | |
| 442 | 4488 |
| 4489 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
| 4490 ;; warning code ;; | |
| 4491 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
| 428 | 4492 |
| 4493 (defcustom log-warning-minimum-level 'info | |
| 4494 "Minimum level of warnings that should be logged. | |
| 4495 The warnings in levels below this are completely ignored, as if they never | |
| 4496 happened. | |
| 4497 | |
| 4498 The recognized warning levels, in decreasing order of priority, are | |
| 793 | 4499 'emergency, 'critical, 'error, 'warning, 'alert, 'notice, 'info, and |
| 428 | 4500 'debug. |
| 4501 | |
| 4502 See also `display-warning-minimum-level'. | |
| 4503 | |
| 4504 You can also control which warnings are displayed on a class-by-class | |
| 4505 basis. See `display-warning-suppressed-classes' and | |
| 793 | 4506 `log-warning-suppressed-classes'. |
| 4507 | |
| 3064 | 4508 For a description of the meaning of the levels, see `display-warning'." |
| 793 | 4509 :type '(choice (const emergency) (const critical) |
| 4510 (const error) (const warning) (const alert) (const notice) | |
| 428 | 4511 (const info) (const debug)) |
| 4512 :group 'warnings) | |
| 4513 | |
| 793 | 4514 (defcustom display-warning-minimum-level 'warning |
| 4515 "Minimum level of warnings that cause the warnings buffer to be displayed. | |
| 4516 Warnings at this level or higher will force the *Warnings* buffer, in which | |
| 4517 the warnings are logged, to be displayed. The warnings in levels below | |
| 4518 this, but at least as high as `log-warning-suppressed-classes', will be | |
| 4519 shown in the minibuffer. | |
| 428 | 4520 |
| 4521 The recognized warning levels, in decreasing order of priority, are | |
| 793 | 4522 'emergency, 'critical, 'error, 'warning, 'alert, 'notice, 'info, and |
| 428 | 4523 'debug. |
| 4524 | |
| 4525 See also `log-warning-minimum-level'. | |
| 4526 | |
| 4527 You can also control which warnings are displayed on a class-by-class | |
| 4528 basis. See `display-warning-suppressed-classes' and | |
| 793 | 4529 `log-warning-suppressed-classes'. |
| 4530 | |
| 3064 | 4531 For a description of the meaning of the levels, see `display-warning'." |
| 793 | 4532 :type '(choice (const emergency) (const critical) |
| 4533 (const error) (const warning) (const alert) (const notice) | |
| 428 | 4534 (const info) (const debug)) |
| 4535 :group 'warnings) | |
| 4536 | |
| 4537 (defvar log-warning-suppressed-classes nil | |
| 4538 "List of classes of warnings that shouldn't be logged or displayed. | |
| 4539 If any of the CLASS symbols associated with a warning is the same as | |
| 4540 any of the symbols listed here, the warning will be completely ignored, | |
| 4541 as it they never happened. | |
| 4542 | |
| 4543 NOTE: In most circumstances, you should *not* set this variable. | |
| 4544 Set `display-warning-suppressed-classes' instead. That way the suppressed | |
| 4545 warnings are not displayed but are still unobtrusively logged. | |
| 4546 | |
| 4547 See also `log-warning-minimum-level' and `display-warning-minimum-level'.") | |
| 4548 | |
| 4549 (defcustom display-warning-suppressed-classes nil | |
| 4550 "List of classes of warnings that shouldn't be displayed. | |
| 4551 If any of the CLASS symbols associated with a warning is the same as | |
| 4552 any of the symbols listed here, the warning will not be displayed. | |
| 4553 The warning will still logged in the *Warnings* buffer (unless also | |
| 4554 contained in `log-warning-suppressed-classes'), but the buffer will | |
| 4555 not be automatically popped up. | |
| 4556 | |
| 4557 See also `log-warning-minimum-level' and `display-warning-minimum-level'." | |
| 4558 :type '(repeat symbol) | |
| 4559 :group 'warnings) | |
| 4560 | |
| 4561 (defvar warning-count 0 | |
| 4562 "Count of the number of warning messages displayed so far.") | |
| 4563 | |
| 4564 (defconst warning-level-alist '((emergency . 8) | |
| 793 | 4565 (critical . 7) |
| 4566 (error . 6) | |
| 4567 (warning . 5) | |
| 4568 (alert . 4) | |
| 428 | 4569 (notice . 3) |
| 4570 (info . 2) | |
| 4571 (debug . 1))) | |
| 4572 | |
| 4573 (defun warning-level-p (level) | |
| 4574 "Non-nil if LEVEL specifies a warning level." | |
| 4575 (and (symbolp level) (assq level warning-level-alist))) | |
| 4576 | |
| 793 | 4577 (defun warning-level-< (level1 level2) |
| 4578 "Non-nil if warning level LEVEL1 is lower than LEVEL2." | |
| 4579 (check-argument-type 'warning-level-p level1) | |
| 4580 (check-argument-type 'warning-level-p level2) | |
| 4581 (< (cdr (assq level1 warning-level-alist)) | |
| 4582 (cdr (assq level2 warning-level-alist)))) | |
| 4583 | |
| 428 | 4584 ;; If you're interested in rewriting this function, be aware that it |
| 4585 ;; could be called at arbitrary points in a Lisp program (when a | |
| 4586 ;; built-in function wants to issue a warning, it will call out to | |
| 4587 ;; this function the next time some Lisp code is evaluated). Therefore, | |
| 4588 ;; this function *must* not permanently modify any global variables | |
| 4589 ;; (e.g. the current buffer) except those that specifically apply | |
| 4590 ;; to the warning system. | |
| 4591 | |
| 4592 (defvar before-init-deferred-warnings nil) | |
| 4593 | |
| 4594 (defun after-init-display-warnings () | |
| 4595 "Display warnings deferred till after the init file is run. | |
| 4596 Warnings that occur before then are deferred so that warning | |
| 4597 suppression in the .emacs file will be honored." | |
| 4598 (while before-init-deferred-warnings | |
| 4599 (apply 'display-warning (car before-init-deferred-warnings)) | |
| 4600 (setq before-init-deferred-warnings | |
| 4601 (cdr before-init-deferred-warnings)))) | |
| 4602 | |
| 4603 (add-hook 'after-init-hook 'after-init-display-warnings) | |
| 4604 | |
| 4605 (defun display-warning (class message &optional level) | |
| 4606 "Display a warning message. | |
| 793 | 4607 |
| 4608 \[This is the most basic entry point for displaying a warning. In practice, | |
| 4609 `lwarn' or `warn' are probably more convenient for most usages.] | |
| 4610 | |
| 4611 CLASS should be a symbol describing what sort of warning this is, such as | |
| 4612 `resource' or `key-mapping' -- this refers, more or less, to the module in | |
| 4613 which the warning is generated and serves to group warnings together with | |
| 4614 similar semantics. A list of such symbols is also accepted. | |
| 4615 | |
| 4616 Optional argument LEVEL can be used to specify a priority for the warning, | |
| 4617 other than default priority `warning'. The currently defined levels are, | |
| 4618 from highest to lowest: | |
| 4619 | |
| 4620 Level Meaning | |
| 4621 ----------------------------------------------------------------------------- | |
| 4622 emergency A fatal or near-fatal error. XEmacs is likely to crash. | |
| 4623 | |
| 4624 critical A serious, nonrecoverable problem has occurred -- e.g., the | |
| 4625 loss of a major subsystem, such as the crash of the X server | |
| 4626 when XEmacs is connected to the server. | |
| 4627 | |
| 4628 error A warning about a problematic condition that should be fixed, | |
| 4629 and XEmacs cannot work around it -- it causes a failure of an | |
| 4630 operation. (In most circumstances, consider just signalling | |
| 4631 an error). However, there is no permanent damage and the | |
| 4632 situation is ultimately recoverable. | |
| 4633 | |
| 4634 warning A warning about a problematic condition that should be fixed, | |
| 4635 but XEmacs can work around it. | |
| 4636 | |
| 4637 \[By default, warnings above here, as well as being logged, cause the | |
| 4638 *Warnings* buffer to be forcibly displayed, so that the warning (and | |
| 4639 previous warnings, since often a whole series of warnings are issued at | |
| 4640 once) can be examined in detail. Also, the annoying presence of the | |
| 4641 *Warnings* buffer will encourage people to go out and fix the | |
| 4642 problem. Warnings below here are displayed in the minibuffer as well as | |
| 4643 logged in the *Warnings* buffer. but the *Warnings* buffer will not be | |
| 4644 forcibly shown, as these represent conditions the user is not expected to | |
| 4645 fix.] | |
| 4646 | |
| 4647 alert A warning about a problematic condition that can't easily be | |
| 4648 fixed (often having to do with the external environment), and | |
| 4649 causes a failure. We don't force the *Warnings* buffer to be | |
| 4650 displayed because the purpose of doing that is to force the | |
| 4651 user to fix the problem so that the buffer no longer appears. | |
| 4652 When the problem is outside the user's control, forcing the | |
| 4653 buffer is pointless and annoying. | |
| 4654 | |
| 4655 notice A warning about a problematic condition that can't easily be | |
| 4656 fixed (often having to do with the external environment), | |
| 4657 but XEmacs can work around it. | |
| 4658 | |
| 4659 info Random info about something new or unexpected that was noticed; | |
| 4660 does not generally indicate a problem. | |
| 4661 | |
| 4662 \[By default, warnings below here are ignored entirely. All warnings above | |
| 4663 here are logged in the *Warnings* buffer.] | |
| 4664 | |
| 4665 debug A debugging notice; normally, not seen at all. | |
| 4666 | |
| 4667 NOTE: `specifier-instance' outputs warnings at level `debug' when errors occur | |
| 4668 in the process of trying to instantiate a particular instantiator. If you | |
| 4669 want to see these, change `log-warning-minimum-level'. | |
| 4670 | |
| 4671 There are two sets of variables. One controls the lower level (see the | |
| 4672 above diagram) -- i.e. ignored entirely. One controls the upper level -- | |
| 4673 whether the *Warnings* buffer is forcibly displayed. In particular: | |
| 4674 | |
| 4675 `display-warning-minimum-level' sets the upper level (see above), and | |
| 4676 `log-warning-minimum-level' the lower level. | |
| 4677 | |
| 4678 Individual classes can be suppressed. `log-warning-suppressed-classes' | |
| 4679 specifies a list of classes where warnings on those classes will be treated | |
| 4680 as if their level is below `log-warning-minimum-level' (i.e. they will be | |
| 4681 ignored completely), regardless of their actual level. Similarly, | |
| 4682 `display-warning-suppressed-classes' specifies a list of classes where | |
| 4683 warnings on those classes will be treated as if their level is below | |
| 4684 `display-warning-minimum-level', but above `log-warning-minimum-level' so | |
| 4685 long as they're not listed in that variable as well." | |
| 428 | 4686 (or level (setq level 'warning)) |
| 4687 (or (listp class) (setq class (list class))) | |
| 4688 (check-argument-type 'warning-level-p level) | |
| 4689 (if (and (not (featurep 'infodock)) | |
| 4690 (not init-file-loaded)) | |
| 4691 (push (list class message level) before-init-deferred-warnings) | |
| 4692 (catch 'ignored | |
| 4693 (let ((display-p t) | |
| 4694 (level-num (cdr (assq level warning-level-alist)))) | |
| 4695 (if (< level-num (cdr (assq log-warning-minimum-level | |
| 4696 warning-level-alist))) | |
| 4697 (throw 'ignored nil)) | |
| 4698 (if (intersection class log-warning-suppressed-classes) | |
| 4699 (throw 'ignored nil)) | |
| 4700 | |
| 4701 (if (< level-num (cdr (assq display-warning-minimum-level | |
| 4702 warning-level-alist))) | |
| 4703 (setq display-p nil)) | |
| 4704 (if (and display-p | |
| 4705 (intersection class display-warning-suppressed-classes)) | |
| 4706 (setq display-p nil)) | |
| 4707 (let ((buffer (get-buffer-create "*Warnings*"))) | |
| 4708 (when display-p | |
| 4709 ;; The C code looks at display-warning-tick to determine | |
| 4710 ;; when it should call `display-warning-buffer'. Change it | |
| 4711 ;; to get the C code's attention. | |
| 4712 (incf display-warning-tick)) | |
| 4713 (with-current-buffer buffer | |
| 4714 (goto-char (point-max)) | |
| 4715 (incf warning-count) | |
| 793 | 4716 (let ((start (point))) |
| 4717 (princ (format "(%d) (%s/%s) " | |
| 4718 warning-count | |
| 4719 (mapconcat 'symbol-name class ",") | |
| 4720 level) | |
| 4721 buffer) | |
| 4722 (princ message buffer) | |
| 4723 (terpri buffer) | |
| 4724 (terpri buffer) | |
| 4725 (let ((ex (make-extent start (point)))) | |
| 4726 (set-extent-properties ex | |
| 4727 `(warning t warning-count ,warning-count | |
| 4728 warning-class ,class | |
| 4729 warning-level ,level))))) | |
| 4730 (message "%s: %s" (capitalize (symbol-name level)) message)))))) | |
| 428 | 4731 |
| 4732 (defun warn (&rest args) | |
| 793 | 4733 "Display a formatted warning message at default class and level. |
| 428 | 4734 The message is constructed by passing all args to `format'. The message |
| 4735 is placed in the *Warnings* buffer, which will be popped up at the next | |
| 793 | 4736 redisplay. The class of the warning is `general'; the level is `warning'. |
| 4737 | |
| 4738 See `display-warning' for more info." | |
| 4739 (display-warning 'default (apply 'format args))) | |
| 428 | 4740 |
| 4741 (defun lwarn (class level &rest args) | |
| 793 | 4742 "Display a formatted warning message at specified class and level. |
| 4743 The message is constructed by passing all args to `format'. The message | |
| 4744 is placed in the *Warnings* buffer, which will be popped up at the next | |
| 4745 redisplay. | |
| 4746 | |
| 4747 See `display-warning' for more info." | |
| 428 | 4748 (display-warning class (apply 'format args) |
| 4749 (or level 'warning))) | |
| 4750 | |
| 4751 (defvar warning-marker nil) | |
| 4752 | |
| 4753 ;; When this function is called by the C code, all non-local exits are | |
| 4754 ;; trapped and C-g is inhibited; therefore, it would be a very, very | |
| 4755 ;; bad idea for this function to get into an infinite loop. | |
| 4756 | |
| 4757 (defun display-warning-buffer () | |
| 4758 "Make the buffer that contains the warnings be visible. | |
| 4759 The C code calls this periodically, right before redisplay." | |
| 4760 (let ((buffer (get-buffer-create "*Warnings*"))) | |
| 4761 (when (or (not warning-marker) | |
| 4762 (not (eq (marker-buffer warning-marker) buffer))) | |
| 4763 (setq warning-marker (make-marker)) | |
| 4764 (set-marker warning-marker 1 buffer)) | |
| 4765 (if temp-buffer-show-function | |
| 442 | 4766 (progn |
| 4767 (funcall temp-buffer-show-function buffer) | |
| 4768 (mapc #'(lambda (win) (set-window-start win warning-marker)) | |
| 4769 (windows-of-buffer buffer nil t))) | |
| 428 | 4770 (set-window-start (display-buffer buffer) warning-marker)) |
| 4771 (set-marker warning-marker (point-max buffer) buffer))) | |
| 4772 | |
| 442 | 4773 |
| 4774 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
| 4775 ;; misc junk ;; | |
| 4776 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
| 4777 | |
| 428 | 4778 (defun emacs-name () |
| 4779 "Return the printable name of this instance of Emacs." | |
| 4780 (cond ((featurep 'infodock) "InfoDock") | |
| 4781 ((featurep 'xemacs) "XEmacs") | |
| 4782 (t "Emacs"))) | |
| 4783 | |
| 793 | 4784 (defun debug-print-1 (&rest args) |
| 4785 "Send a debugging-type string to standard output. | |
| 4786 If the first argument is a string, it is considered to be a format | |
| 4787 specifier if there are sufficient numbers of other args, and the string is | |
| 4788 formatted using (apply #'format args). Otherwise, each argument is printed | |
| 4789 individually in a numbered list." | |
| 4790 (let ((standard-output 'external-debugging-output) | |
| 4791 (fmt (condition-case nil | |
| 4792 (and (stringp (first args)) | |
| 4793 (apply #'format args)) | |
| 4794 (error nil)))) | |
| 4795 (if fmt | |
| 4796 (progn | |
| 3064 | 4797 (princ (apply #'format args)) |
| 793 | 4798 (terpri)) |
| 4799 (princ "--> ") | |
| 4800 (let ((i 1)) | |
| 4801 (dolist (sgra args) | |
| 4802 (if (> i 1) (princ " ")) | |
| 4803 (princ (format "%d. " i)) | |
| 4804 (prin1 sgra) | |
| 4805 (incf i)) | |
| 4806 (terpri))))) | |
| 4807 | |
| 4808 (defun debug-print (&rest args) | |
| 442 | 4809 "Send a string to the debugging output. |
| 793 | 4810 If the first argument is a string, it is considered to be a format |
| 4811 specifier if there are sufficient numbers of other args, and the string is | |
| 4812 formatted using (apply #'format args). Otherwise, each argument is printed | |
| 4813 individually in a numbered list." | |
| 4814 (let ((standard-output 'external-debugging-output)) | |
| 4815 (apply #'debug-print-1 args))) | |
| 4816 | |
| 4817 (defun debug-backtrace () | |
| 4818 "Send a backtrace to the debugging output." | |
| 4819 (let ((standard-output 'external-debugging-output)) | |
| 4820 (backtrace nil t) | |
| 4821 (terpri))) | |
| 444 | 4822 |
| 428 | 4823 ;;; simple.el ends here |