cua-base.el 59.7 KB
Newer Older
1 2
;;; cua-base.el --- emulate CUA key bindings

3
;; Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
Glenn Morris's avatar
Glenn Morris committed
4
;;   2005, 2006, 2007, 2008 Free Software Foundation, Inc.
5 6 7 8 9 10 11 12

;; Author: Kim F. Storm <storm@cua.dk>
;; Keywords: keyboard emulation convenience cua

;; This file is part of GNU Emacs.

;; GNU Emacs is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
13
;; the Free Software Foundation; either version 3, or (at your option)
14 15 16 17 18 19 20 21 22
;; any later version.

;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;; GNU General Public License for more details.

;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs; see the file COPYING.  If not, write to the
Lute Kamstra's avatar
Lute Kamstra committed
23 24
;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
;; Boston, MA 02110-1301, USA.
25 26 27 28 29 30 31 32 33


;;; Commentary:

;; This is the CUA package which provides a complete emulation of the
;; standard CUA key bindings (Motif/Windows/Mac GUI) for selecting and
;; manipulating the region where S-<movement> is used to highlight &
;; extend the region.

34 35 36 37
;; CUA style key bindings for cut and paste
;; ----------------------------------------

;; This package allows the C-z, C-x, C-c, and C-v keys to be
38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57
;; bound appropriately according to the Motif/Windows GUI, i.e.
;;	C-z	-> undo
;;	C-x	-> cut
;;	C-c	-> copy
;;	C-v	-> paste
;;
;; The tricky part is the handling of the C-x and C-c keys which
;; are normally used as prefix keys for most of emacs' built-in
;; commands.  With CUA they still do!!!
;;
;; Only when the region is currently active (and highlighted since
;; transient-mark-mode is used), the C-x and C-c keys will work as CUA
;; keys
;; 	C-x -> cut
;; 	C-c -> copy
;; When the region is not active, C-x and C-c works as prefix keys!
;;
;; This probably sounds strange and difficult to get used to - but
;; based on my own experience and the feedback from many users of
;; this package, it actually works very well and users adapt to it
58
;; instantly - or at least very quickly.  So give it a try!
59 60 61 62 63 64
;; ... and in the few cases where you make a mistake and accidentally
;; delete the region - you just undo the mistake (with C-z).
;;
;; If you really need to perform a command which starts with one of
;; the prefix keys even when the region is active, you have three options:
;; - press the prefix key twice very quickly (within 0.2 seconds),
65
;; - press the prefix key and the following key within 0.2 seconds, or
66 67 68 69 70 71 72 73 74 75 76 77
;; - use the SHIFT key with the prefix key, i.e. C-X or C-C
;;
;; This behaviour can be customized via the
;; cua-prefix-override-inhibit-delay variable.

;; In addition to using the shifted movement keys, you can also use
;; [C-space] to start the region and use unshifted movement keys to extend
;; it. To cancel the region, use [C-space] or [C-g].

;; If you prefer to use the standard emacs cut, copy, paste, and undo
;; bindings, customize cua-enable-cua-keys to nil.

78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106

;; Typing text replaces the region
;; -------------------------------

;; When the region is active, i.e. highlighted, the text in region is
;; replaced by the text you type.

;; The replaced text is saved in register 0 which can be inserted using
;; the key sequence M-0 C-v (see the section on register support below).

;; If you have just replaced a highlighted region with typed text,
;; you can repeat the replace with M-v.  This will search forward
;; for a streach of text identical to the previous contents of the
;; region (i.e. the contents of register 0) and replace it with the
;; text you typed to replace the original region.  Repeating M-v will
;; replace the next matching region and so on.
;;
;; Example:  Suppose you have a line like this
;;   The redo operation will redo the last redoable command
;; which you want to change into
;;   The repeat operation will repeat the last repeatable command
;; This is done by highlighting the first occurrence of "redo"
;; and type "repeat" M-v M-v.

;; Note: Since CUA-mode duplicates the functionality of the
;; delete-selection-mode, that mode is automatically disabled when
;; CUA-mode is enabled.


107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123
;; CUA mode indications
;; --------------------
;; You can choose to let CUA use different cursor colors to indicate
;; overwrite mode and read-only buffers.  For example, the following
;; setting will use a RED cursor in normal (insertion) mode in
;; read-write buffers, a YELLOW cursor in overwrite mode in read-write
;; buffers, and a GREEN cursor read-only buffers:
;;
;;  (setq cua-normal-cursor-color "red")
;;  (setq cua-overwrite-cursor-color "yellow")
;;  (setq cua-read-only-cursor-color "green")
;;

;; CUA register support
;; --------------------
;; Emacs' standard register support is also based on a separate set of
;; "register commands".
124
;;
125 126 127 128
;; CUA's register support is activated by providing a numeric
;; prefix argument to the C-x, C-c, and C-v commands. For example,
;; to copy the selected region to register 2, enter [M-2 C-c].
;; Or if you have activated the keypad prefix mode, enter [kp-2 C-c].
129
;;
130 131
;; And CUA will copy and paste normal region as well as rectangles
;; into the registers, i.e. you use exactly the same command for both.
132
;;
133 134 135 136 137 138 139 140 141 142 143
;; In addition, the last highlighted text that is deleted (not
;; copied), e.g. by [delete] or by typing text over a highlighted
;; region, is automatically saved in register 0, so you can insert it
;; using [M-0 C-v].

;; CUA rectangle support
;; ---------------------
;; Emacs' normal rectangle support is based on interpreting the region
;; between the mark and point as a "virtual rectangle", and using a
;; completely separate set of "rectangle commands" [C-x r ...] on the
;; region to copy, kill, fill a.s.o. the virtual rectangle.
144
;;
145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161
;; cua-mode's superior rectangle support uses a true visual
;; representation of the selected rectangle, i.e. it highlights the
;; actual part of the buffer that is currently selected as part of the
;; rectangle.  Unlike emacs' traditional rectangle commands, the
;; selected rectangle always as straight left and right edges, even
;; when those are in the middle of a TAB character or beyond the end
;; of the current line.  And it does this without actually modifying
;; the buffer contents (it uses display overlays to visualize the
;; virtual dimensions of the rectangle).
;;
;; This means that cua-mode's rectangles are not limited to the actual
;; contents of the buffer, so if the cursor is currently at the end of a
;; short line, you can still extend the rectangle to include more columns
;; of longer lines in the same rectangle.  And you can also have the
;; left edge of a rectangle start in the middle of a TAB character.
;; Sounds strange? Try it!
;;
Kim F. Storm's avatar
Kim F. Storm committed
162
;; To start a rectangle, use [C-return] and extend it using the normal
163 164 165 166 167
;; movement keys (up, down, left, right, home, end, C-home,
;; C-end). Once the rectangle has the desired size, you can cut or
;; copy it using C-x and C-c (or C-w and M-w), and you can
;; subsequently insert it - as a rectangle - using C-v (or C-y).  So
;; the only new command you need to know to work with cua-mode
Kim F. Storm's avatar
Kim F. Storm committed
168
;; rectangles is C-return!
169 170 171 172 173
;;
;; Normally, when you paste a rectangle using C-v (C-y), each line of
;; the rectangle is inserted into the existing lines in the buffer.
;; If overwrite-mode is active when you paste a rectangle, it is
;; inserted as normal (multi-line) text.
174
;;
175 176 177
;; If you prefer the traditional rectangle marking (i.e. don't want
;; straight edges), [M-p] toggles this for the current rectangle,
;; or you can customize cua-virtual-rectangle-edges.
178 179 180 181 182 183 184 185

;; And there's more: If you want to extend or reduce the size of the
;; rectangle in one of the other corners of the rectangle, just use
;; [return] to move the cursor to the "next" corner.  Or you can use
;; the [M-up], [M-down], [M-left], and [M-right] keys to move the
;; entire rectangle overlay (but not the contents) in the given
;; direction.
;;
Kim F. Storm's avatar
Kim F. Storm committed
186
;; [C-return] cancels the rectangle
187 188 189 190 191 192 193 194 195 196
;; [C-space] activates the region bounded by the rectangle

;; If you type a normal (self-inserting) character when the rectangle is
;; active, the character is inserted on the "current side" of every line
;; of the rectangle.  The "current side" is the side on which the cursor
;; is currently located. If the rectangle is only 1 column wide,
;; insertion will be performed to the left when the cursor is at the
;; bottom of the rectangle.  So, for example, to comment out an entire
;; paragraph like this one, just place the cursor on the first character
;; of the first line, and enter the following:
Kim F. Storm's avatar
Kim F. Storm committed
197
;;     C-return M-} ; ; <space>  C-return
198

199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214
;; cua-mode's rectangle support also includes all the normal rectangle
;; functions with easy access:
;;
;; [M-a] aligns all words at the left edge of the rectangle
;; [M-b] fills the rectangle with blanks (tabs and spaces)
;; [M-c] closes the rectangle by removing all blanks at the left edge
;;       of the rectangle
;; [M-f] fills the rectangle with a single character (prompt)
;; [M-i] increases the first number found on each line of the rectangle
;;       by the amount given by the numeric prefix argument (default 1)
;;       It recognizes 0x... as hexadecimal numbers
;; [M-k] kills the rectangle as normal multi-line text (for paste)
;; [M-l] downcases the rectangle
;; [M-m] copies the rectangle as normal multi-line text (for paste)
;; [M-n] fills each line of the rectangle with increasing numbers using
;;       a supplied format string (prompt)
215
;; [M-o] opens the rectangle by moving the highlighted text to the
216
;;       right of the rectangle and filling the rectangle with blanks.
217 218
;; [M-p] toggles virtual straight rectangle edges
;; [M-P] inserts tabs and spaces (padding) to make real straight edges
219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234
;; [M-q] performs text filling on the rectangle
;; [M-r] replaces REGEXP (prompt) by STRING (prompt) in rectangle
;; [M-R] reverse the lines in the rectangle
;; [M-s] fills each line of the rectangle with the same STRING (prompt)
;; [M-t] performs text fill of the rectangle with TEXT (prompt)
;; [M-u] upcases the rectangle
;; [M-|] runs shell command on rectangle
;; [M-'] restricts rectangle to lines with CHAR (prompt) at left column
;; [M-/] restricts rectangle to lines matching REGEXP (prompt)
;; [C-?] Shows a brief list of the above commands.

;; [M-C-up] and [M-C-down] scrolls the lines INSIDE the rectangle up
;; and down; lines scrolled outside the top or bottom of the rectangle
;; are lost, but can be recovered using [C-z].

;; CUA Global Mark
235
;; ---------------
236 237 238 239 240 241
;; The final feature provided by CUA is the "global mark", which
;; makes it very easy to copy bits and pieces from the same and other
;; files into the current text.  To enable and cancel the global mark,
;; use [S-C-space].  The cursor will blink when the global mark
;; is active.  The following commands behave differently when the global
;; mark is set:
242
;; <ch>  All characters (including newlines) you type are inserted
243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269
;;       at the global mark!
;; [C-x] If you cut a region or rectangle, it is automatically inserted
;;       at the global mark, and the global mark is advanced.
;; [C-c] If you copy a region or rectangle, it is immediately inserted
;;       at the global mark, and the global mark is advanced.
;; [C-v] Copies a single character to the global mark.
;; [C-d] Moves (i.e. deletes and inserts) a single character to the
;;       global mark.
;; [backspace] deletes the character before the global mark, while
;; [delete] deltes the character after the global mark.

;; [S-C-space] Jumps to and cancels the global mark.
;; [C-u S-C-space] Cancels the global mark (stays in current buffer).

;; [TAB] Indents the current line or rectangle to the column of the
;;       global mark.

;;; Code:

;;; Customization

(defgroup cua nil
  "Emulate CUA key bindings including C-x and C-c."
  :prefix "cua"
  :group 'editing-basics
  :group 'convenience
  :group 'emulations
270
  :version "22.1"
271 272 273 274 275 276
  :link '(emacs-commentary-link :tag "Commentary" "cua-base.el")
  :link '(emacs-library-link :tag "Lisp File" "cua-base.el"))

(defcustom cua-enable-cua-keys t
  "*Enable using C-z, C-x, C-c, and C-v for undo, cut, copy, and paste.
If the value is t, these mappings are always enabled.  If the value is
277
`shift', these keys are only enabled if the last region was marked with
278 279
a shifted movement key.  If the value is nil, these keys are never
enabled."
280
  :type '(choice (const :tag "Disabled" nil)
281
		 (const :tag "Shift region only" shift)
Kim F. Storm's avatar
Kim F. Storm committed
282
		 (other :tag "Enabled" t))
283 284
  :group 'cua)

Kim F. Storm's avatar
Kim F. Storm committed
285 286 287 288 289 290 291 292 293 294 295
(defcustom cua-remap-control-v t
  "*If non-nil, C-v binding is used for paste (yank).
Also, M-v is mapped to `cua-repeat-replace-region'."
  :type 'boolean
  :group 'cua)

(defcustom cua-remap-control-z t
  "*If non-nil, C-v binding is used for undo."
  :type 'boolean
  :group 'cua)

296 297 298 299
(defcustom cua-highlight-region-shift-only nil
  "*If non-nil, only highlight region if marked with S-<move>.
When this is non-nil, CUA toggles `transient-mark-mode' on when the region
is marked using shifted movement keys, and off when the mark is cleared.
300
But when the mark was set using \\[cua-set-mark], Transient Mark mode
301 302 303 304
is not turned on."
  :type 'boolean
  :group 'cua)

305
(defcustom cua-prefix-override-inhibit-delay
306 307 308 309 310 311 312 313 314 315 316 317 318
  (if (featurep 'lisp-float-type) (/ (float 1) (float 5)) nil)
  "*If non-nil, time in seconds to delay before overriding prefix key.
If there is additional input within this time, the prefix key is
used as a normal prefix key.  So typing a key sequence quickly will
inhibit overriding the prefix key.
As a special case, if the prefix keys repeated within this time, the
first prefix key is discarded, so typing a prefix key twice in quick
succession will also inhibit overriding the prefix key.
If the value is nil, use a shifted prefix key to inhibit the override."
  :type '(choice (number :tag "Inhibit delay")
		 (const :tag "No delay" nil))
  :group 'cua)

319 320 321 322 323 324
(defcustom cua-delete-selection t
  "*If non-nil, typed text replaces text in the active selection."
  :type '(choice (const :tag "Disabled" nil)
		 (other :tag "Enabled" t))
  :group 'cua)

325 326 327 328 329
(defcustom cua-keep-region-after-copy nil
  "If non-nil, don't deselect the region after copying."
  :type 'boolean
  :group 'cua)

330
(defcustom cua-toggle-set-mark t
Kim F. Storm's avatar
Kim F. Storm committed
331
  "*If non-nil, the `cua-set-mark' command toggles the mark."
332 333 334 335
  :type '(choice (const :tag "Disabled" nil)
		 (other :tag "Enabled" t))
  :group 'cua)

Kim F. Storm's avatar
Kim F. Storm committed
336 337 338 339 340 341 342 343
(defcustom cua-auto-mark-last-change nil
  "*If non-nil, set implicit mark at position of last buffer change.
This means that \\[universal-argument] \\[cua-set-mark] will jump to the position
of the last buffer change before jumping to the explicit marks on the mark ring.
See `cua-set-mark' for details."
  :type 'boolean
  :group 'cua)

344 345 346
(defcustom cua-enable-register-prefix 'not-ctrl-u
  "*If non-nil, registers are supported via numeric prefix arg.
If the value is t, any numeric prefix arg in the range 0 to 9 will be
347
interpreted as a register number.
348
If the value is `not-ctrl-u', using C-u to enter a numeric prefix is not
349
interpreted as a register number.
350
If the value is `ctrl-u-only', only numeric prefix entered with C-u is
351
interpreted as a register number."
352
  :type '(choice (const :tag "Disabled" nil)
353 354
		 (const :tag "Enabled, but C-u arg is not a register" not-ctrl-u)
		 (const :tag "Enabled, but only for C-u arg" ctrl-u-only)
Kim F. Storm's avatar
Kim F. Storm committed
355
		 (other :tag "Enabled" t))
356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374
  :group 'cua)

(defcustom cua-delete-copy-to-register-0 t
  "*If non-nil, save last deleted region or rectangle to register 0."
  :type 'boolean
  :group 'cua)

(defcustom cua-enable-region-auto-help nil
  "*If non-nil, automatically show help for active region."
  :type 'boolean
  :group 'cua)

(defcustom cua-enable-modeline-indications nil
  "*If non-nil, use minor-mode hook to show status in mode line."
  :type 'boolean
  :group 'cua)

(defcustom cua-check-pending-input t
  "*If non-nil, don't override prefix key if input pending.
375
It is rumoured that `input-pending-p' is unreliable under some window
376 377 378 379
managers, so try setting this to nil, if prefix override doesn't work."
  :type 'boolean
  :group 'cua)

Kim F. Storm's avatar
Kim F. Storm committed
380 381
(defcustom cua-paste-pop-rotate-temporarily nil
  "*If non-nil, \\[cua-paste-pop] only rotates the kill-ring temporarily.
382 383 384 385 386
This means that both \\[yank] and the first \\[yank-pop] in a sequence always insert
the most recently killed text.  Each immediately following \\[cua-paste-pop] replaces
the previous text with the next older element on the `kill-ring'.
With prefix arg, \\[universal-argument] \\[yank-pop] inserts the same text as the most
recent \\[yank-pop] (or \\[yank]) command."
Kim F. Storm's avatar
Kim F. Storm committed
387 388
  :type 'boolean
  :group 'cua)
389 390 391

;;; Rectangle Customization

392 393 394 395
(defcustom cua-virtual-rectangle-edges t
  "*If non-nil, rectangles have virtual straight edges.
Note that although rectangles are always DISPLAYED with straight edges, the
buffer is NOT modified, until you execute a command that actually modifies it.
396
M-p toggles this feature when a rectangle is active."
397 398 399
  :type 'boolean
  :group 'cua)

400 401 402 403
(defcustom cua-auto-tabify-rectangles 1000
  "*If non-nil, automatically tabify after rectangle commands.
This basically means that `tabify' is applied to all lines that
are modified by inserting or deleting a rectangle.  If value is
404
an integer, CUA will look for existing tabs in a region around
405 406 407 408 409 410 411 412
the rectangle, and only do the conversion if any tabs are already
present.  The number specifies then number of characters before
and after the region marked by the rectangle to search."
  :type '(choice (number :tag "Auto detect (limit)")
		 (const :tag "Disabled" nil)
		 (other :tag "Enabled" t))
  :group 'cua)

413 414 415
(defvar cua-global-keymap)		; forward
(defvar cua--region-keymap)		; forward

416 417 418 419
(defcustom cua-rectangle-mark-key [(control return)]
  "Global key used to toggle the cua rectangle mark."
  :set #'(lambda (symbol value)
	   (set symbol value)
420 421
	   (when (and (boundp 'cua--keymaps-initialized)
		      cua--keymaps-initialized)
422 423 424 425 426 427 428 429 430 431
	     (define-key cua-global-keymap value
	       'cua-set-rectangle-mark)
	     (when (boundp 'cua--rectangle-keymap)
	       (define-key cua--rectangle-keymap value
		 'cua-clear-rectangle-mark)
	       (define-key cua--region-keymap value
		 'cua-toggle-rectangle-mark))))
  :type 'key-sequence
  :group 'cua)

432 433 434 435 436
(defcustom cua-rectangle-modifier-key 'meta
  "*Modifier key used for rectangle commands bindings.
On non-window systems, always use the meta modifier.
Must be set prior to enabling CUA."
  :type '(choice (const :tag "Meta key" meta)
437 438
		 (const :tag "Alt key" alt)
		 (const :tag "Hyper key" hyper)
439 440 441
		 (const :tag "Super key" super))
  :group 'cua)

442 443 444 445 446
(defcustom cua-enable-rectangle-auto-help t
  "*If non-nil, automatically show help for region, rectangle and global mark."
  :type 'boolean
  :group 'cua)

447
(defface cua-rectangle
Kim F. Storm's avatar
Kim F. Storm committed
448 449
  '((default :inherit region)
    (((class color)) :foreground "white" :background "maroon"))
450 451 452
  "*Font used by CUA for highlighting the rectangle."
  :group 'cua)

453
(defface cua-rectangle-noselect
Kim F. Storm's avatar
Kim F. Storm committed
454 455
  '((default :inherit region)
    (((class color)) :foreground "white" :background "dimgray"))
456 457 458 459 460 461 462 463 464 465 466
  "*Font used by CUA for highlighting the non-selected rectangle lines."
  :group 'cua)


;;; Global Mark Customization

(defcustom cua-global-mark-keep-visible t
  "*If non-nil, always keep global mark visible in other window."
  :type 'boolean
  :group 'cua)

467
(defface cua-global-mark
468 469
  '((((min-colors 88)(class color)) :foreground "black" :background "yellow1")
    (((class color)) :foreground "black" :background "yellow")
Kim F. Storm's avatar
Kim F. Storm committed
470
    (t :bold t))
471 472 473 474 475 476 477 478 479 480 481 482
  "*Font used by CUA for highlighting the global mark."
  :group 'cua)

(defcustom cua-global-mark-blink-cursor-interval 0.20
  "*Blink cursor at this interval when global mark is active."
  :type '(choice (number :tag "Blink interval")
		 (const :tag "No blink" nil))
  :group 'cua)


;;; Cursor Indication Customization

483
(defcustom cua-enable-cursor-indications nil
484 485 486 487
  "*If non-nil, use different cursor colors for indications."
  :type 'boolean
  :group 'cua)

488 489 490 491 492 493 494 495 496
(defcustom cua-normal-cursor-color (or (and (boundp 'initial-cursor-color) initial-cursor-color)
				       (and (boundp 'initial-frame-alist)
					    (assoc 'cursor-color initial-frame-alist)
					    (cdr (assoc 'cursor-color initial-frame-alist)))
				       (and (boundp 'default-frame-alist)
					    (assoc 'cursor-color default-frame-alist)
					    (cdr (assoc 'cursor-color default-frame-alist)))
				       (frame-parameter nil 'cursor-color)
				       "red")
497
  "Normal (non-overwrite) cursor color.
498 499 500
Default is to load cursor color from initial or default frame parameters.

If the value is a COLOR name, then only the `cursor-color' attribute will be
501
affected.  If the value is a cursor TYPE (one of: box, hollow, bar, or hbar),
502 503
then only the `cursor-type' property will be affected.  If the value is
a cons (TYPE . COLOR), then both properties are affected."
504
  :initialize 'custom-initialize-default
505 506 507 508 509
  :type '(choice
	  (color :tag "Color")
	  (choice :tag "Type"
		  (const :tag "Filled box" box)
		  (const :tag "Vertical bar" bar)
510
		  (const :tag "Horizontal bar" hbar)
511
		  (const :tag "Hollow box" hollow))
512 513 514 515
	  (cons :tag "Color and Type"
		(choice :tag "Type"
			(const :tag "Filled box" box)
			(const :tag "Vertical bar" bar)
516
			(const :tag "Horizontal bar" hbar)
517
			(const :tag "Hollow box" hollow))
518
		(color :tag "Color")))
519 520 521
  :group 'cua)

(defcustom cua-read-only-cursor-color "darkgreen"
Kim F. Storm's avatar
Kim F. Storm committed
522
  "*Cursor color used in read-only buffers, if non-nil.
523 524 525
Only used when `cua-enable-cursor-indications' is non-nil.

If the value is a COLOR name, then only the `cursor-color' attribute will be
526
affected.  If the value is a cursor TYPE (one of: box, hollow, bar, or hbar),
527 528 529 530 531 532 533
then only the `cursor-type' property will be affected.  If the value is
a cons (TYPE . COLOR), then both properties are affected."
  :type '(choice
	  (color :tag "Color")
	  (choice :tag "Type"
		  (const :tag "Filled box" box)
		  (const :tag "Vertical bar" bar)
534
		  (const :tag "Horizontal bar" hbar)
535
		  (const :tag "Hollow box" hollow))
536 537 538 539
	  (cons :tag "Color and Type"
		(choice :tag "Type"
			(const :tag "Filled box" box)
			(const :tag "Vertical bar" bar)
540
			(const :tag "Horizontal bar" hbar)
541
			(const :tag "Hollow box" hollow))
542
		(color :tag "Color")))
543 544 545 546
  :group 'cua)

(defcustom cua-overwrite-cursor-color "yellow"
  "*Cursor color used when overwrite mode is set, if non-nil.
547 548 549
Only used when `cua-enable-cursor-indications' is non-nil.

If the value is a COLOR name, then only the `cursor-color' attribute will be
550
affected.  If the value is a cursor TYPE (one of: box, hollow, bar, or hbar),
551 552 553 554 555 556 557
then only the `cursor-type' property will be affected.  If the value is
a cons (TYPE . COLOR), then both properties are affected."
  :type '(choice
	  (color :tag "Color")
	  (choice :tag "Type"
		  (const :tag "Filled box" box)
		  (const :tag "Vertical bar" bar)
558
		  (const :tag "Horizontal bar" hbar)
559
		  (const :tag "Hollow box" hollow))
560 561 562 563
	  (cons :tag "Color and Type"
		(choice :tag "Type"
			(const :tag "Filled box" box)
			(const :tag "Vertical bar" bar)
564
			(const :tag "Horizontal bar" hbar)
565
			(const :tag "Hollow box" hollow))
566
		(color :tag "Color")))
567 568 569 570
  :group 'cua)

(defcustom cua-global-mark-cursor-color "cyan"
  "*Indication for active global mark.
Kim F. Storm's avatar
Kim F. Storm committed
571
Will change cursor color to specified color if string.
572 573 574
Only used when `cua-enable-cursor-indications' is non-nil.

If the value is a COLOR name, then only the `cursor-color' attribute will be
575
affected.  If the value is a cursor TYPE (one of: box, hollow, bar, or hbar),
576 577 578 579 580 581 582
then only the `cursor-type' property will be affected.  If the value is
a cons (TYPE . COLOR), then both properties are affected."
  :type '(choice
	  (color :tag "Color")
	  (choice :tag "Type"
		  (const :tag "Filled box" box)
		  (const :tag "Vertical bar" bar)
583
		  (const :tag "Horizontal bar" hbar)
584
		  (const :tag "Hollow box" hollow))
585 586 587 588
	  (cons :tag "Color and Type"
		(choice :tag "Type"
			(const :tag "Filled box" box)
			(const :tag "Vertical bar" bar)
589
			(const :tag "Horizontal bar" hbar)
590
			(const :tag "Hollow box" hollow))
591
		(color :tag "Color")))
592 593 594 595 596
  :group 'cua)


;;; Rectangle support is in cua-rect.el

597 598
(autoload 'cua-set-rectangle-mark "cua-rect"
  "Start rectangle at mouse click position." t nil)
599 600

;; Stub definitions until it is loaded
601 602 603 604 605 606 607 608 609 610 611 612 613 614 615
(defvar cua--rectangle)
(defvar cua--last-killed-rectangle)
(unless (featurep 'cua-rect)
  (setq cua--rectangle nil
        cua--last-killed-rectangle nil))

;; All behind cua--rectangle tests.
(declare-function cua-copy-rectangle    "cua-rect" (arg))
(declare-function cua-cut-rectangle     "cua-rect" (arg))
(declare-function cua--rectangle-left   "cua-rect" (&optional val))
(declare-function cua--delete-rectangle "cua-rect" ())
(declare-function cua--insert-rectangle "cua-rect"
                  (rect &optional below paste-column line-count))
(declare-function cua--rectangle-corner "cua-rect" (&optional advance))
(declare-function cua--rectangle-assert "cua-rect" ())
616 617 618

;;; Global Mark support is in cua-gmrk.el

619
(autoload 'cua-toggle-global-mark "cua-gmrk" nil t nil)
620 621

;; Stub definitions until cua-gmrk.el is loaded
622 623
(defvar cua--global-mark-active)
(unless (featurep 'cua-gmrk)
624 625
  (setq cua--global-mark-active nil))

626 627
(declare-function cua--insert-at-global-mark    "cua-gmrk" (str &optional msg))
(declare-function cua--global-mark-post-command "cua-gmrk" ())
628

629 630 631 632

;;; Low-level Interface

(defvar cua-inhibit-cua-keys nil
633
  "Buffer-local variable that may disable the CUA keymappings.")
634 635
(make-variable-buffer-local 'cua-inhibit-cua-keys)

636 637 638 639
;;; Aux. variables

;; Current region was started using cua-set-mark.
(defvar cua--explicit-region-start nil)
640
(make-variable-buffer-local 'cua--explicit-region-start)
641 642 643 644 645 646 647 648 649 650

;; Latest region was started using shifted movement command.
(defvar cua--last-region-shifted nil)

;; buffer + point prior to current command when rectangle is active
;; checked in post-command hook to see if point was moved
(defvar cua--buffer-and-point-before-command nil)

;; status string for mode line indications
(defvar cua--status-string nil)
651
(make-variable-buffer-local 'cua--status-string)
652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715

(defvar cua--debug nil)


;;; Prefix key override mechanism

;; The prefix override (when mark-active) operates in three substates:
;; [1] Before using a prefix key
;; [2] Immediately after using a prefix key
;; [3] A fraction of a second later

;; In state [1], the cua--prefix-override-keymap is active.
;; This keymap binds the C-x and C-c prefix keys to the
;; cua--prefix-override-handler function.

;; When a prefix key is typed in state [1], cua--prefix-override-handler
;; will push back the keys already read to the event queue.  If input is
;; pending, it changes directly to state [3].  Otherwise, a short timer [T]
;; is started, and it changes to state [2].

;; In state [2], the cua--prefix-override-keymap is inactive.  Instead the
;; cua--prefix-repeat-keymap is active.  This keymap binds C-c C-c and C-x
;; C-x to the cua--prefix-repeat-handler function.

;; If the prefix key is repeated in state [2], cua--prefix-repeat-handler
;; will cancel [T], back the keys already read (except for the second prefix
;; keys) to the event queue, and changes to state [3].

;; The basic cua--cua-keys-keymap binds [C-x timeout] to kill-region and
;; [C-c timeout] to copy-region-as-kill, so if [T] times out in state [2],
;; the cua--prefix-override-timeout function will push a `timeout' event on
;; the event queue, and changes to state [3].

;; In state [3] both cua--prefix-override-keymap and cua--prefix-repeat-keymap
;; are inactive, so the timeout in cua-global-keymap binding is used, or the
;; normal prefix key binding from the global or local map will be used.

;; The pre-command hook (executed as a consequence of the timeout or normal
;; prefix key binding) will cancel [T] and change from state [3] back to
;; state [1].  So cua--prefix-override-handler and cua--prefix-repeat-handler
;; are always called with state reset to [1]!

;; State [1] is recognized by cua--prefix-override-timer is nil,
;; state [2] is recognized by cua--prefix-override-timer is a timer, and
;; state [3] is recognized by cua--prefix-override-timer is t.

(defvar cua--prefix-override-timer nil)
(defvar cua--prefix-override-length nil)

(defun cua--prefix-override-replay (arg repeat)
  (let* ((keys (this-command-keys))
	 (i (length keys))
	 (key (aref keys (1- i))))
    (setq cua--prefix-override-length (- i repeat))
    (setq cua--prefix-override-timer
	  (or
	   ;; In state [2], change to state [3]
	   (> repeat 0)
	   ;; In state [1], change directly to state [3]
	   (and cua-check-pending-input (input-pending-p))
	   ;; In state [1], [T] disabled, so change to state [3]
	   (not (numberp cua-prefix-override-inhibit-delay))
	   (<= cua-prefix-override-inhibit-delay 0)
	   ;; In state [1], start [T] and change to state [2]
716
	   (run-with-timer cua-prefix-override-inhibit-delay nil
717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743
			   'cua--prefix-override-timeout)))
    ;; Don't record this command
    (setq this-command last-command)
    ;; Restore the prefix arg
    (setq prefix-arg arg)
    (reset-this-command-lengths)
    ;; Push the key back on the event queue
    (setq unread-command-events (cons key unread-command-events))))

(defun cua--prefix-override-handler (arg)
  "Start timer waiting for prefix key to be followed by another key.
Repeating prefix key when region is active works as a single prefix key."
  (interactive "P")
  (cua--prefix-override-replay arg 0))

(defun cua--prefix-repeat-handler (arg)
  "Repeating prefix key when region is active works as a single prefix key."
  (interactive "P")
  (cua--prefix-override-replay arg 1))

(defun cua--prefix-copy-handler (arg)
  "Copy region/rectangle, then replay last key."
  (interactive "P")
  (if cua--rectangle
      (cua-copy-rectangle arg)
    (cua-copy-region arg))
  (let ((keys (this-single-command-keys)))
744
    (setq unread-command-events
745 746 747 748 749 750 751 752 753
	  (cons (aref keys (1- (length keys))) unread-command-events))))

(defun cua--prefix-cut-handler (arg)
  "Cut region/rectangle, then replay last key."
  (interactive "P")
  (if cua--rectangle
      (cua-cut-rectangle arg)
    (cua-cut-region arg))
  (let ((keys (this-single-command-keys)))
754
    (setq unread-command-events
755 756 757 758 759 760 761 762 763
	  (cons (aref keys (1- (length keys))) unread-command-events))))

(defun cua--prefix-override-timeout ()
  (setq cua--prefix-override-timer t)
  (when (= (length (this-command-keys)) cua--prefix-override-length)
    (setq unread-command-events (cons 'timeout unread-command-events))
    (if prefix-arg
      (reset-this-command-lengths)
      (setq overriding-terminal-local-map nil))
764
    (cua--select-keymaps)))
765 766 767 768 769 770 771 772


;;; Aux. functions

(defun cua--fallback ()
  ;; Execute original command
  (setq this-command this-original-command)
  (call-interactively this-command))
773

774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789
(defun cua--keep-active ()
  (setq mark-active t
	deactivate-mark nil))

(defun cua--deactivate (&optional now)
  (setq cua--explicit-region-start nil)
  (if (not now)
      (setq deactivate-mark t)
    (setq mark-active nil)
    (run-hooks 'deactivate-mark-hook)))


;; The current register prefix
(defvar cua--register nil)

(defun cua--prefix-arg (arg)
790
  (setq cua--register
791 792
	(and cua-enable-register-prefix
	     (integerp arg) (>= arg 0) (< arg 10)
793 794
	     (let* ((prefix (aref (this-command-keys) 0))
		    (ctrl-u-prefix (and (integerp prefix)
Kim F. Storm's avatar
Kim F. Storm committed
795
					(= prefix ?\C-u))))
796
	       (cond
Kim F. Storm's avatar
Kim F. Storm committed
797 798 799 800 801
		((eq cua-enable-register-prefix 'not-ctrl-u)
		 (not ctrl-u-prefix))
		((eq cua-enable-register-prefix 'ctrl-u-only)
		 ctrl-u-prefix)
		(t t)))
802 803 804 805 806 807
	     (+ arg ?0)))
  (if cua--register nil arg))


;;; Region specific commands

Kim F. Storm's avatar
Kim F. Storm committed
808 809 810
(defvar cua--last-deleted-region-pos nil)
(defvar cua--last-deleted-region-text nil)

811 812 813 814 815 816 817
(defun cua-delete-region ()
  "Delete the active region.
Save a copy in register 0 if `cua-delete-copy-to-register-0' is non-nil."
  (interactive)
  (let ((start (mark)) (end (point)))
    (or (<= start end)
	(setq start (prog1 end (setq end start))))
Kim F. Storm's avatar
Kim F. Storm committed
818
    (setq cua--last-deleted-region-text (filter-buffer-substring start end))
819
    (if cua-delete-copy-to-register-0
Kim F. Storm's avatar
Kim F. Storm committed
820
	(set-register ?0 cua--last-deleted-region-text))
821
    (delete-region start end)
822
    (setq cua--last-deleted-region-pos
Kim F. Storm's avatar
Kim F. Storm committed
823 824 825
	  (cons (current-buffer)
		(and (consp buffer-undo-list)
		     (car buffer-undo-list))))
826 827
    (cua--deactivate)
    (/= start end)))
828 829 830 831

(defun cua-replace-region ()
  "Replace the active region with the character you type."
  (interactive)
832
  (let ((not-empty (and cua-delete-selection (cua-delete-region))))
833 834 835 836 837 838
    (unless (eq this-original-command this-command)
      (let ((overwrite-mode
	     (and overwrite-mode
		  not-empty
		  (not (eq this-original-command 'self-insert-command)))))
	(cua--fallback)))))
839 840 841 842 843 844 845 846 847 848

(defun cua-copy-region (arg)
  "Copy the region to the kill ring.
With numeric prefix arg, copy to register 0-9 instead."
  (interactive "P")
  (setq arg (cua--prefix-arg arg))
  (setq cua--last-killed-rectangle nil)
  (let ((start (mark)) (end (point)))
    (or (<= start end)
	(setq start (prog1 end (setq end start))))
849 850 851 852 853 854 855
    (cond
     (cua--register
      (copy-to-register cua--register start end nil))
     ((eq this-original-command 'clipboard-kill-ring-save)
      (clipboard-kill-ring-save start end))
     (t
      (copy-region-as-kill start end)))
856 857 858 859 860 861 862 863 864 865 866 867 868 869 870
    (if cua-keep-region-after-copy
	(cua--keep-active)
      (cua--deactivate))))

(defun cua-cut-region (arg)
  "Cut the region and copy to the kill ring.
With numeric prefix arg, copy to register 0-9 instead."
  (interactive "P")
  (setq cua--last-killed-rectangle nil)
  (if buffer-read-only
      (cua-copy-region arg)
    (setq arg (cua--prefix-arg arg))
    (let ((start (mark)) (end (point)))
      (or (<= start end)
	  (setq start (prog1 end (setq end start))))
871 872 873 874 875 876 877
      (cond
       (cua--register
	(copy-to-register cua--register start end t))
       ((eq this-original-command 'clipboard-kill-region)
	(clipboard-kill-region start end))
       (t
	(kill-region start end))))
878 879 880 881 882 883 884 885 886 887 888 889
    (cua--deactivate)))

;;; Generic commands for regions, rectangles, and global marks

(defun cua-cancel ()
  "Cancel the active region, rectangle, or global mark."
  (interactive)
  (setq mark-active nil)
  (setq cua--explicit-region-start nil)
  (if (fboundp 'cua--cancel-rectangle)
      (cua--cancel-rectangle)))

890
(declare-function x-clipboard-yank "../term/x-win" ())
891

892 893 894 895 896 897 898 899
(defun cua-paste (arg)
  "Paste last cut or copied region or rectangle.
An active region is deleted before executing the command.
With numeric prefix arg, paste from register 0-9 instead.
If global mark is active, copy from register or one character."
  (interactive "P")
  (setq arg (cua--prefix-arg arg))
  (let ((regtxt (and cua--register (get-register cua--register)))
900 901
	(count (prefix-numeric-value arg))
	paste-column paste-lines)
902 903 904 905 906 907 908
    (cond
     ((and cua--register (not regtxt))
      (message "Nothing in register %c" cua--register))
     (cua--global-mark-active
      (if regtxt
	  (cua--insert-at-global-mark regtxt)
	(when (not (eobp))
Kim F. Storm's avatar
Kim F. Storm committed
909
	  (cua--insert-at-global-mark (filter-buffer-substring (point) (+ (point) count)))
910 911 912 913 914 915 916
	  (forward-char count))))
     (buffer-read-only
      (message "Cannot paste into a read-only buffer"))
     (t
      ;; Must save register here, since delete may override reg 0.
      (if mark-active
	  (if cua--rectangle
917 918 919 920 921 922
	      (progn
		(goto-char (min (mark) (point)))
		(setq paste-column (cua--rectangle-left))
		(setq paste-lines (cua--delete-rectangle))
		(if (= paste-lines 1)
		    (setq paste-lines nil))) ;; paste all
923 924
	    ;; Before a yank command, make sure we don't yank the
	    ;; head of the kill-ring that really comes from the
925 926
	    ;; currently active region we are going to delete.
	    ;; That would make yank a no-op.
927 928
	    (if (and (string= (filter-buffer-substring (point) (mark))
			      (car kill-ring))
929
		     (fboundp 'mouse-region-match)
930
		     (mouse-region-match))
931 932 933 934 935
		(current-kill 1))
	    (cua-delete-region)))
      (cond
       (regtxt
	(cond
936
	 ;; This being a cons implies cua-rect is loaded?
937 938 939 940 941 942 943 944 945 946
	 ((consp regtxt) (cua--insert-rectangle regtxt))
	 ((stringp regtxt) (insert-for-yank regtxt))
	 (t (message "Unknown data in register %c" cua--register))))
       ((and cua--last-killed-rectangle
	     (eq (and kill-ring (car kill-ring)) (car cua--last-killed-rectangle)))
	(let ((pt (point)))
	  (when (not (eq buffer-undo-list t))
	    (setq this-command 'cua--paste-rectangle)
	    (undo-boundary)
	    (setq buffer-undo-list (cons pt buffer-undo-list)))
947 948
	  (cua--insert-rectangle (cdr cua--last-killed-rectangle)
				 nil paste-column paste-lines)
949
	  (if arg (goto-char pt))))
950 951
       ((eq this-original-command 'clipboard-yank)
	(clipboard-yank))
952 953
       ((eq this-original-command 'x-clipboard-yank)
	(x-clipboard-yank))
954 955
       (t (yank arg)))))))

Kim F. Storm's avatar
Kim F. Storm committed
956 957 958 959 960 961

;; cua-paste-pop-rotate-temporarily == t mechanism:
;;
;; C-y M-y M-y => only rotates kill ring temporarily,
;;                so next C-y yanks what previous C-y yanked,
;;
962 963 964
;; M-y M-y M-y => equivalent to C-y M-y M-y
;;
;; But: After another command, C-u M-y remembers the temporary
Kim F. Storm's avatar
Kim F. Storm committed
965
;;      kill-ring position, so
966
;; C-u M-y     => yanks what the last M-y yanked
Kim F. Storm's avatar
Kim F. Storm committed
967 968 969 970
;;

(defvar cua-paste-pop-count nil)

971 972
(defun cua-paste-pop (arg)
  "Replace a just-pasted text or rectangle with a different text.
973 974
See `yank-pop' for details about the default behavior.  For an alternative
behavior, see `cua-paste-pop-rotate-temporarily'."
975
  (interactive "P")
Kim F. Storm's avatar
Kim F. Storm committed
976 977 978 979 980 981 982 983 984 985 986 987 988 989 990
  (cond
   ((eq last-command 'cua--paste-rectangle)
    (undo)
    (yank arg))
   ((not cua-paste-pop-rotate-temporarily)
    (yank-pop (prefix-numeric-value arg)))
   (t
    (let ((rotate (if (consp arg) 1 (prefix-numeric-value arg))))
      (cond
       ((or (null cua-paste-pop-count)
	    (eq last-command 'yank)
	    (eq last-command 'cua-paste))
	(setq cua-paste-pop-count rotate)
	(setq last-command 'yank)
	(yank-pop cua-paste-pop-count))
991 992
       ((and (eq last-command 'cua-paste-pop) (not (consp arg)))
	(setq cua-paste-pop-count (+ cua-paste-pop-count rotate))
Kim F. Storm's avatar
Kim F. Storm committed
993 994 995
	(setq last-command 'yank)
	(yank-pop cua-paste-pop-count))
       (t
996 997
	(setq cua-paste-pop-count
	      (if (consp arg) (+ cua-paste-pop-count rotate -1) 1))
Kim F. Storm's avatar
Kim F. Storm committed
998 999 1000
	(yank (1+ cua-paste-pop-count)))))
    ;; Undo rotating the kill-ring, so next C-y will
    ;; yank the original head.
1001
    (setq kill-ring-yank-pointer kill-ring)
Kim F. Storm's avatar
Kim F. Storm committed
1002
    (setq this-command 'cua-paste-pop))))
1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014

(defun cua-exchange-point-and-mark (arg)
  "Exchanges point and mark, but don't activate the mark.
Activates the mark if a prefix argument is given."
  (interactive "P")
  (if arg
      (setq mark-active t)
    (let (mark-active)
      (exchange-point-and-mark)
      (if cua--rectangle
	  (cua--rectangle-corner 0)))))

1015 1016 1017 1018 1019
;; Typed text that replaced the highlighted region.
(defvar cua--repeat-replace-text nil)

(defun cua-repeat-replace-region (arg)
  "Repeat replacing text of highlighted region with typed text.
1020 1021
Searches for the next stretch of text identical to the region last
replaced by typing text over it and replaces it with the same stretch
Kim F. Storm's avatar
Kim F. Storm committed
1022
of text."
1023
  (interactive "P")
Kim F. Storm's avatar
Kim F. Storm committed
1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042
  (when cua--last-deleted-region-pos
    (save-excursion
      (save-restriction
	(set-buffer (car cua--last-deleted-region-pos))
	(widen)
	;; Find the text that replaced the region via the undo list.
	(let ((ul buffer-undo-list)
	      (elt (cdr cua--last-deleted-region-pos))
	      u s e)
	  (when elt
	    (while (consp ul)
	      (setq u (car ul) ul (cdr ul))
	      (cond
	       ((eq u elt) ;; got it
		(setq ul nil))
	       ((and (consp u) (integerp (car u)) (integerp (cdr u)))
		(if (and s (= (cdr u) s))
		    (setq s (car u))
		  (setq s (car u) e (cdr u)))))))
Kim F. Storm's avatar
Kim F. Storm committed
1043 1044 1045 1046 1047 1048 1049 1050
	  (cond ((and s e (<= s e) (= s (mark t)))
		 (setq cua--repeat-replace-text
		       (filter-buffer-substring s e nil t)))
		((and (null s) (eq u elt)) ;; nothing inserted
		 (setq cua--repeat-replace-text
		       ""))
		(t
		 (message "Cannot locate replacement text"))))))
Kim F. Storm's avatar
Kim F. Storm committed
1051 1052 1053 1054 1055
    (setq cua--last-deleted-region-pos nil))
  (if (and cua--last-deleted-region-text
	   cua--repeat-replace-text
	   (search-forward cua--last-deleted-region-text nil t nil))
      (replace-match cua--repeat-replace-text arg t)))
1056

1057 1058 1059
(defun cua-help-for-region (&optional help)
  "Show region specific help in echo area."
  (interactive)
1060
  (message
1061 1062 1063 1064 1065 1066
   (concat (if help "C-?:help " "")
	   "C-z:undo C-x:cut C-c:copy C-v:paste S-ret:rect")))


;;; Shift activated / extended region

Kim F. Storm's avatar
Kim F. Storm committed
1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088
(defun cua-pop-to-last-change ()
  (let ((undo-list buffer-undo-list)
	pos elt)
    (while (and (not pos)
		(consp undo-list))
      (setq elt (car undo-list)
	    undo-list (cdr undo-list))
      (cond
       ((integerp elt)
	(setq pos elt))
       ((not (consp elt)))
       ((and (integerp (cdr elt))
	     (or (integerp (car elt)) (stringp (car elt))))
	(setq pos (cdr elt)))
       ((and (eq (car elt) 'apply) (consp (cdr elt)) (integerp (cadr elt)))
	(setq pos (nth 3 elt)))))
    (when (and pos
	       (/= pos (point))
	       (>= pos (point-min)) (<= pos (point-max)))
      (goto-char pos)
      t)))

1089 1090
(defun cua-set-mark (&optional arg)
  "Set mark at where point is, clear mark, or jump to mark.
Kim F. Storm's avatar
Kim F. Storm committed
1091 1092 1093

With no prefix argument, clear mark if already set.  Otherwise, set
mark, and push old mark position on local mark ring; also push mark on
Kim F. Storm's avatar
Kim F. Storm committed
1094
global mark ring if last mark was set in another buffer.
Kim F. Storm's avatar
Kim F. Storm committed
1095 1096

With argument, jump to mark, and pop a new position for mark off
Kim F. Storm's avatar
Kim F. Storm committed
1097
the local mark ring (this does not affect the global mark ring).
Kim F. Storm's avatar
Kim F. Storm committed
1098
Use \\[pop-global-mark] to jump to a mark off the global mark ring
Kim F. Storm's avatar
Kim F. Storm committed
1099 1100 1101 1102
\(see `pop-global-mark').

If `cua-auto-mark-last-change' is non-nil, this command behaves as if there
was an implicit mark at the position of the last buffer change.
1103 1104

Repeating the command without the prefix jumps to the next position
Kim F. Storm's avatar
Kim F. Storm committed
1105
off the local (or global) mark ring.
Kim F. Storm's avatar
Kim F. Storm committed
1106 1107

With a double \\[universal-argument] prefix argument, unconditionally set mark."
1108 1109
  (interactive "P")
  (cond
Kim F. Storm's avatar
Kim F. Storm committed
1110 1111
   ((and (consp arg) (> (prefix-numeric-value arg) 4))
    (push-mark-command nil))
1112
   ((eq last-command 'pop-to-mark-command)
Kim F. Storm's avatar
Kim F. Storm committed
1113 1114
    (setq this-command 'pop-to-mark-command)
    (pop-to-mark-command))
1115
   ((and (eq last-command 'pop-global-mark) (not arg))
Kim F. Storm's avatar
Kim F. Storm committed
1116 1117
    (setq this-command 'pop-global-mark)
    (pop-global-mark))
1118
   (arg
1119
    (setq this-command 'pop-to-mark-command)
Kim F. Storm's avatar
Kim F. Storm committed
1120 1121 1122
    (or (and cua-auto-mark-last-change
	     (cua-pop-to-last-change))
	(pop-to-mark-command)))
1123
   ((and cua-toggle-set-mark mark-active)
1124 1125 1126
    (cua--deactivate)
    (message "Mark Cleared"))
   (t
1127
    (push-mark-command nil nil)
1128 1129 1130 1131 1132
    (setq cua--explicit-region-start t)
    (setq cua--last-region-shifted nil)
    (if cua-enable-region-auto-help
	(cua-help-for-region t)))))

1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154
;;; Scrolling commands which does not signal errors at top/bottom
;;; of buffer at first key-press (instead moves to top/bottom
;;; of buffer).

(defun cua-scroll-up (&optional arg)
  "Scroll text of current window upward ARG lines; or near full screen if no ARG.
If window cannot be scrolled further, move cursor to bottom line instead.
A near full screen is `next-screen-context-lines' less than a full screen.
Negative ARG means scroll downward.
If ARG is the atom `-', scroll downward by nearly full screen."
  (interactive "P")
  (cond
   ((eq arg '-) (cua-scroll-down nil))
   ((< (prefix-numeric-value arg) 0)
    (cua-scroll-down (- (prefix-numeric-value arg))))
   ((eobp)
    (scroll-up arg))  ; signal error
   (t
    (condition-case nil
	(scroll-up arg)
      (end-of-buffer (goto-char (point-max)))))))

1155 1156
(put 'cua-scroll-up 'CUA 'move)

1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174
(defun cua-scroll-down (&optional arg)
  "Scroll text of current window downward ARG lines; or near full screen if no ARG.
If window cannot be scrolled further, move cursor to top line instead.
A near full screen is `next-screen-context-lines' less than a full screen.
Negative ARG means scroll upward.
If ARG is the atom `-', scroll upward by nearly full screen."
  (interactive "P")
  (cond
   ((eq arg '-) (cua-scroll-up nil))
   ((< (prefix-numeric-value arg) 0)
    (cua-scroll-up (- (prefix-numeric-value arg))))
   ((bobp)
    (scroll-down arg))  ; signal error
   (t
    (condition-case nil
	(scroll-down arg)
      (beginning-of-buffer (goto-char (point-min)))))))

1175
(put 'cua-scroll-down 'CUA 'move)
1176

1177 1178 1179
;;; Cursor indications

(defun cua--update-indications ()
1180 1181 1182 1183 1184 1185 1186 1187
  (let* ((cursor
	  (cond
	   ((and cua--global-mark-active
		 cua-global-mark-cursor-color)
	    cua-global-mark-cursor-color)
	   ((and buffer-read-only
		 cua-read-only-cursor-color)
	    cua-read-only-cursor-color)
1188
	   ((and cua-overwrite-cursor-color overwrite-mode)
1189 1190 1191 1192 1193 1194 1195 1196 1197 1198
	    cua-overwrite-cursor-color)
	   (t cua-normal-cursor-color)))
	 (color (if (consp cursor) (cdr cursor) cursor))
	 (type (if (consp cursor) (car cursor) cursor)))
    (if (and color
	     (stringp color)
	     (not (equal color (frame-parameter nil 'cursor-color))))
	(set-cursor-color color))
    (if (and type
	     (symbolp type)
1199
	     (not (eq type default-cursor-type)))
1200
	(setq default-cursor-type type))))
1201 1202 1203 1204


;;; Pre-command hook

1205
(defun cua--pre-command-handler-1 ()
1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243
  ;; Cancel prefix key timeout if user enters another key.
  (when cua--prefix-override-timer
    (if (timerp cua--prefix-override-timer)
	(cancel-timer cua--prefix-override-timer))
    (setq cua--prefix-override-timer nil))

  (cond
   ;; Only symbol commands can have necessary properties
   ((not (symbolp this-command))
    nil)

   ;; Handle delete-selection property on non-movement commands
   ((not (eq (get this-command 'CUA) 'move))
    (when (and mark-active (not deactiva