+++ /dev/null
-;;; pc-select.el --- emulate mark, cut, copy and paste from Motif
-;;; (or MAC GUI or MS-windoze (bah)) look-and-feel
-;;; including key bindings.
-
-;; Copyright (C) 1995-1997, 2000-2011 Free Software Foundation, Inc.
-
-;; Author: Michael Staats <michael@thp.Uni-Duisburg.DE>
-;; Keywords: convenience emulations
-;; Created: 26 Sep 1995
-
-;; 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
-;; the Free Software Foundation, either version 3 of the License, or
-;; (at your option) 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. If not, see <http://www.gnu.org/licenses/>.
-
-;;; Commentary:
-
-;; This package emulates the mark, copy, cut and paste look-and-feel of motif
-;; programs (which is the same as the MAC gui and (sorry for that) MS-Windows).
-;; It modifies the keybindings of the cursor keys and the next, prior,
-;; home and end keys. They will modify mark-active.
-;; You can still get the old behavior of cursor moving with the
-;; control sequences C-f, C-b, etc.
-;; This package uses transient-mark-mode and
-;; delete-selection-mode.
-;;
-;; In addition to that all key-bindings from the pc-mode are
-;; done here too (as suggested by RMS).
-;;
-;; As I found out after I finished the first version, s-region.el tries
-;; to do the same.... But my code is a little more complete and using
-;; delete-selection-mode is very important for the look-and-feel.
-;; Pete Forman <pete.forman@airgun.wg.waii.com> provided some motif
-;; compliant keybindings which I added. I had to modify them a little
-;; to add the -mark and -nomark functionality of cursor moving.
-;;
-;; Credits:
-;; Many thanks to all who made comments.
-;; Thanks to RMS and Ralf Muschall <prm@rz.uni-jena.de> for criticism.
-;; Kevin Cutts <cutts@ukraine.corp.mot.com> added the beginning-of-buffer
-;; and end-of-buffer functions which I modified a little.
-;; David Biesack <sasdjb@unx.sas.com> suggested some more cleanup.
-;; Thanks to Pete Forman <pete.forman@airgun.wg.waii.com>
-;; for additional motif keybindings.
-;; Thanks to jvromans@squirrel.nl (Johan Vromans) for a bug report
-;; concerning setting of this-command.
-;; Dan Nicolaescu <done@ece.arizona.ro> suggested suppressing the
-;; scroll-up/scroll-down error.
-;; Eli Barzilay (eli@cs.bgu.ac.il) suggested the sexps functions and
-;; keybindings.
-;;
-;; Ok, some details about the idea of PC Selection mode:
-;;
-;; o The standard keys for moving around (right, left, up, down, home, end,
-;; prior, next, called "move-keys" from now on) will always de-activate
-;; the mark.
-;; o If you press "Shift" together with the "move-keys", the region
-;; you pass along is activated
-;; o You have the copy, cut and paste functions (as in many other programs)
-;; which will operate on the active region
-;; It was not possible to bind them to C-v, C-x and C-c for obvious
-;; emacs reasons.
-;; They will be bound according to the "old" behavior to S-delete (cut),
-;; S-insert (paste) and C-insert (copy). These keys do the same in many
-;; other programs.
-;;
-
-;;; Code:
-
-;; Customization:
-(defgroup pc-select nil
- "Emulate pc bindings."
- :prefix "pc-select"
- :group 'emulations)
-
-(defcustom pc-select-override-scroll-error t
- "Non-nil means don't generate error on scrolling past edge of buffer.
-This variable applies in PC Selection mode only.
-The scroll commands normally generate an error if you try to scroll
-past the top or bottom of the buffer. This is annoying when selecting
-text with these commands. If you set this variable to non-nil, these
-errors are suppressed."
- :type 'boolean
- :group 'pc-select)
-(define-obsolete-variable-alias 'pc-select-override-scroll-error
- 'scroll-error-top-bottom
- "24.1")
-
-(defcustom pc-select-selection-keys-only nil
- "Non-nil means only bind the basic selection keys when started.
-Other keys that emulate pc-behavior will be untouched.
-This gives mostly Emacs-like behavior with only the selection keys enabled."
- :type 'boolean
- :group 'pc-select)
-
-(defcustom pc-select-meta-moves-sexps nil
- "Non-nil means move sexp-wise with Meta key, otherwise move word-wise."
- :type 'boolean
- :group 'pc-select)
-
-(defcustom pc-selection-mode-hook nil
- "The hook to run when PC Selection mode is toggled."
- :type 'hook
- :group 'pc-select)
-
-(defvar pc-select-saved-settings-alist nil
- "The values of the variables before PC Selection mode was toggled on.
-When PC Selection mode is toggled on, it sets quite a few variables
-for its own purposes. This alist holds the original values of the
-variables PC Selection mode had set, so that these variables can be
-restored to their original values when PC Selection mode is toggled off.")
-
-(defvar pc-select-map nil
- "The keymap used as the global map when PC Selection mode is on." )
-
-(defvar pc-select-saved-global-map nil
- "The global map that was in effect when PC Selection mode was toggled on.")
-
-(defvar pc-select-key-bindings-alist nil
- "This alist holds all the key bindings PC Selection mode sets.")
-
-(defvar pc-select-default-key-bindings nil
- "These key bindings always get set by PC Selection mode.")
-
-(unless pc-select-default-key-bindings
- (let ((lst
- ;; This is to avoid confusion with the delete-selection-mode.
- ;; On simple displays you can't see that a region is active and
- ;; will be deleted on the next keypress IMHO especially for
- ;; copy-region-as-kill this is confusing.
- ;; The same goes for exchange-point-and-mark
- '(("\M-w" . copy-region-as-kill-nomark)
- ("\C-x\C-x" . exchange-point-and-mark-nomark)
- ([S-right] . forward-char-mark)
- ([right] . forward-char-nomark)
- ([C-S-right] . forward-word-mark)
- ([C-right] . forward-word-nomark)
- ([S-left] . backward-char-mark)
- ([left] . backward-char-nomark)
- ([C-S-left] . backward-word-mark)
- ([C-left] . backward-word-nomark)
- ([S-down] . next-line-mark)
- ([down] . next-line-nomark)
-
- ([S-end] . end-of-line-mark)
- ([end] . end-of-line-nomark)
- ([S-C-end] . end-of-buffer-mark)
- ([C-end] . end-of-buffer-nomark)
- ([S-M-end] . end-of-buffer-mark)
- ([M-end] . end-of-buffer-nomark)
-
- ([S-next] . scroll-up-mark)
- ([next] . scroll-up-nomark)
-
- ([S-up] . previous-line-mark)
- ([up] . previous-line-nomark)
-
- ([S-home] . beginning-of-line-mark)
- ([home] . beginning-of-line-nomark)
- ([S-C-home] . beginning-of-buffer-mark)
- ([C-home] . beginning-of-buffer-nomark)
- ([S-M-home] . beginning-of-buffer-mark)
- ([M-home] . beginning-of-buffer-nomark)
-
- ([M-S-down] . forward-line-mark)
- ([M-down] . forward-line-nomark)
- ([M-S-up] . backward-line-mark)
- ([M-up] . backward-line-nomark)
-
- ([S-prior] . scroll-down-mark)
- ([prior] . scroll-down-nomark)
-
- ;; Next four lines are from Pete Forman.
- ([C-down] . forward-paragraph-nomark) ; KNextPara cDn
- ([C-up] . backward-paragraph-nomark) ; KPrevPara cUp
- ([S-C-down] . forward-paragraph-mark)
- ([S-C-up] . backward-paragraph-mark))))
-
- (setq pc-select-default-key-bindings lst)))
-
-(defvar pc-select-extra-key-bindings nil
- "Key bindings to set only if `pc-select-selection-keys-only' is nil.")
-
-;; The following keybindings are for standard ISO keyboards
-;; as they are used with IBM compatible PCs, IBM RS/6000,
-;; MACs, many X-Stations and probably more
-(unless pc-select-extra-key-bindings
- (let ((lst
- '(([S-insert] . yank)
- ([C-insert] . copy-region-as-kill)
- ([S-delete] . kill-region)
-
- ;; The following bindings are useful on Sun Type 3 keyboards
- ;; They implement the Get-Delete-Put (copy-cut-paste)
- ;; functions from sunview on the L6, L8 and L10 keys
- ;; Sam Steingold <sds@gnu.org> says that f16 is copy and f18 is paste.
- ([f16] . copy-region-as-kill)
- ([f18] . yank)
- ([f20] . kill-region)
-
- ;; The following bindings are from Pete Forman.
- ([f6] . other-window) ; KNextPane F6
- ([C-delete] . kill-line) ; KEraseEndLine cDel
- ("\M-\d" . undo) ; KUndo aBS
-
- ;; The following binding is taken from pc-mode.el
- ;; as suggested by RMS.
- ;; I only used the one that is not covered above.
- ([C-M-delete] . kill-sexp)
- ;; Next line proposed by Eli Barzilay
- ([C-escape] . electric-buffer-list))))
-
- (setq pc-select-extra-key-bindings lst)))
-
-(defvar pc-select-meta-moves-sexps-key-bindings
- '((([M-S-right] . forward-sexp-mark)
- ([M-right] . forward-sexp-nomark)
- ([M-S-left] . backward-sexp-mark)
- ([M-left] . backward-sexp-nomark))
- (([M-S-right] . forward-word-mark)
- ([M-right] . forward-word-nomark)
- ([M-S-left] . backward-word-mark)
- ([M-left] . backward-word-nomark)))
- "The list of key bindings controlled by `pc-select-meta-moves-sexp'.
-The bindings in the car of this list get installed if
-`pc-select-meta-moves-sexp' is t, the bindings in the cadr of this
-list get installed otherwise.")
-
-;; This is for tty. We don't turn on normal-erase-is-backspace,
-;; but bind keys as pc-selection-mode did before
-;; normal-erase-is-backspace was invented, to keep us back
-;; compatible.
-(defvar pc-select-tty-key-bindings
- '(([delete] . delete-char) ; KDelete Del
- ([C-backspace] . backward-kill-word))
- "The list of key bindings controlled by `pc-select-selection-keys-only'.
-These key bindings get installed when running in a tty, but only if
-`pc-select-selection-keys-only' is nil.")
-
-(defvar pc-select-old-M-delete-binding nil
- "Holds the old mapping of [M-delete] in the `function-key-map'.
-This variable holds the value associated with [M-delete] in the
-`function-key-map' before PC Selection mode had changed that
-association.")
-
-;;;;
-;; misc
-;;;;
-
-(provide 'pc-select)
-
-(defun copy-region-as-kill-nomark (beg end)
- "Save the region as if killed, but don't kill it; deactivate mark.
-If `interprogram-cut-function' is non-nil, also save the text for a window
-system cut and paste.
-
-Deactivating mark is to avoid confusion with `delete-selection-mode'
-and `transient-mark-mode'."
- (interactive "r")
- (copy-region-as-kill beg end)
- (setq mark-active nil)
- (message "Region saved"))
-
-(defun exchange-point-and-mark-nomark ()
- "Like `exchange-point-and-mark' but without activating the mark."
- (interactive)
- (exchange-point-and-mark)
- (setq mark-active nil))
-
-;;;;
-;; non-interactive
-;;;;
-(defun pc-select-ensure-mark ()
- ;; make sure mark is active
- ;; test if it is active, if it isn't, set it and activate it
- (or mark-active (set-mark-command nil))
- ;; Remember who activated the mark.
- (setq mark-active 'pc-select))
-
-(defun pc-select-maybe-deactivate-mark ()
- ;; maybe switch off mark (only if *we* switched it on)
- (when (eq mark-active 'pc-select)
- (deactivate-mark)))
-
-;;;;;;;;;;;;;;;;;;;;;;;;;;;
-;;;;; forward and mark
-;;;;;;;;;;;;;;;;;;;;;;;;;;;
-
-(defun forward-char-mark (&optional arg)
- "Ensure mark is active; move point right ARG characters (left if ARG negative).
-On reaching end of buffer, stop and signal error."
- (interactive "p")
- (pc-select-ensure-mark)
- (forward-char arg))
-
-(defun forward-word-mark (&optional arg)
- "Ensure mark is active; move point right ARG words (backward if ARG is negative).
-Normally returns t.
-If an edge of the buffer is reached, point is left there
-and nil is returned."
- (interactive "p")
- (pc-select-ensure-mark)
- (forward-word arg))
-
-(defun forward-line-mark (&optional arg)
- "Ensure mark is active; move cursor vertically down ARG lines."
- (interactive "p")
- (pc-select-ensure-mark)
- (forward-line arg)
- (setq this-command 'forward-line)
-)
-
-(defun forward-sexp-mark (&optional arg)
- "Ensure mark is active; move forward across one balanced expression (sexp).
-With argument, do it that many times. Negative arg -N means
-move backward across N balanced expressions."
- (interactive "p")
- (pc-select-ensure-mark)
- (forward-sexp arg))
-
-(defun forward-paragraph-mark (&optional arg)
- "Ensure mark is active; move forward to end of paragraph.
-With arg N, do it N times; negative arg -N means move backward N paragraphs.
-
-A line which `paragraph-start' matches either separates paragraphs
-\(if `paragraph-separate' matches it also) or is the first line of a paragraph.
-A paragraph end is the beginning of a line which is not part of the paragraph
-to which the end of the previous line belongs, or the end of the buffer."
- (interactive "p")
- (pc-select-ensure-mark)
- (forward-paragraph arg))
-
-(defun next-line-mark (&optional arg)
- "Ensure mark is active; move cursor vertically down ARG lines.
-If there is no character in the target line exactly under the current column,
-the cursor is positioned after the character in that line which spans this
-column, or at the end of the line if it is not long enough.
-If there is no line in the buffer after this one, behavior depends on the
-value of `next-line-add-newlines'. If non-nil, it inserts a newline character
-to create a line, and moves the cursor to that line. Otherwise it moves the
-cursor to the end of the buffer \(if already at the end of the buffer, an error
-is signaled).
-
-The command \\[set-goal-column] can be used to create
-a semipermanent goal column to which this command always moves.
-Then it does not try to move vertically. This goal column is stored
-in `goal-column', which is nil when there is none."
- (interactive "p")
- (pc-select-ensure-mark)
- (with-no-warnings (next-line arg))
- (setq this-command 'next-line))
-
-(defun end-of-line-mark (&optional arg)
- "Ensure mark is active; move point to end of current line.
-With argument ARG not nil or 1, move forward ARG - 1 lines first.
-If scan reaches end of buffer, stop there without error."
- (interactive "p")
- (pc-select-ensure-mark)
- (end-of-line arg)
- (setq this-command 'end-of-line))
-
-(defun backward-line-mark (&optional arg)
- "Ensure mark is active; move cursor vertically up ARG lines."
- (interactive "p")
- (pc-select-ensure-mark)
- (if (null arg)
- (setq arg 1))
- (forward-line (- arg))
- (setq this-command 'forward-line)
-)
-
-(defun scroll-down-mark (&optional arg)
- "Ensure mark is active; scroll down ARG lines; or near full screen if no ARG.
-A near full screen is `next-screen-context-lines' less than a full screen.
-Negative ARG means scroll upward.
-When calling from a program, supply a number as argument or nil.
-Attempting to scroll past the edge of buffer does not raise an
-error, unless `pc-select-override-scroll-error' is nil."
- (interactive "P")
- (pc-select-ensure-mark)
- (cond (pc-select-override-scroll-error
- (condition-case nil (scroll-down arg)
- (beginning-of-buffer (goto-char (point-min)))))
- (t (scroll-down arg))))
-
-(defun end-of-buffer-mark (&optional arg)
- "Ensure mark is active; move point to the end of the buffer.
-With arg N, put point N/10 of the way from the end.
-
-If the buffer is narrowed, this command uses the beginning and size
-of the accessible part of the buffer.
-
-Don't use this command in Lisp programs!
-\(goto-char \(point-max)) is faster and avoids clobbering the mark."
- (interactive "P")
- (pc-select-ensure-mark)
- (let ((size (- (point-max) (point-min))))
- (goto-char (if arg
- (- (point-max)
- (if (> size 10000)
- ;; Avoid overflow for large buffer sizes!
- (* (prefix-numeric-value arg)
- (/ size 10))
- (/ (* size (prefix-numeric-value arg)) 10)))
- (point-max))))
- ;; If we went to a place in the middle of the buffer,
- ;; adjust it to the beginning of a line.
- (if arg (forward-line 1)
- ;; If the end of the buffer is not already on the screen,
- ;; then scroll specially to put it near, but not at, the bottom.
- (if (let ((old-point (point)))
- (save-excursion
- (goto-char (window-start))
- (vertical-motion (window-height))
- (< (point) old-point)))
- (progn
- (overlay-recenter (point))
- (recenter -3)))))
-
-;;;;;;;;;
-;;;;; no mark
-;;;;;;;;;
-
-(defun forward-char-nomark (&optional arg)
- "Deactivate mark; move point right ARG characters \(left if ARG negative).
-On reaching end of buffer, stop and signal error."
- (interactive "p")
- (pc-select-maybe-deactivate-mark)
- (forward-char arg))
-
-(defun forward-word-nomark (&optional arg)
- "Deactivate mark; move point right ARG words \(backward if ARG is negative).
-Normally returns t.
-If an edge of the buffer is reached, point is left there
-and nil is returned."
- (interactive "p")
- (pc-select-maybe-deactivate-mark)
- (forward-word arg))
-
-(defun forward-line-nomark (&optional arg)
- "Deactivate mark; move cursor vertically down ARG lines."
- (interactive "p")
- (pc-select-maybe-deactivate-mark)
- (forward-line arg)
- (setq this-command 'forward-line)
-)
-
-(defun forward-sexp-nomark (&optional arg)
- "Deactivate mark; move forward across one balanced expression (sexp).
-With argument, do it that many times. Negative arg -N means
-move backward across N balanced expressions."
- (interactive "p")
- (pc-select-maybe-deactivate-mark)
- (forward-sexp arg))
-
-(defun forward-paragraph-nomark (&optional arg)
- "Deactivate mark; move forward to end of paragraph.
-With arg N, do it N times; negative arg -N means move backward N paragraphs.
-
-A line which `paragraph-start' matches either separates paragraphs
-\(if `paragraph-separate' matches it also) or is the first line of a paragraph.
-A paragraph end is the beginning of a line which is not part of the paragraph
-to which the end of the previous line belongs, or the end of the buffer."
- (interactive "p")
- (pc-select-maybe-deactivate-mark)
- (forward-paragraph arg))
-
-(defun next-line-nomark (&optional arg)
- "Deactivate mark; move cursor vertically down ARG lines.
-If there is no character in the target line exactly under the current column,
-the cursor is positioned after the character in that line which spans this
-column, or at the end of the line if it is not long enough.
-If there is no line in the buffer after this one, behavior depends on the
-value of `next-line-add-newlines'. If non-nil, it inserts a newline character
-to create a line, and moves the cursor to that line. Otherwise it moves the
-cursor to the end of the buffer (if already at the end of the buffer, an error
-is signaled).
-
-The command \\[set-goal-column] can be used to create
-a semipermanent goal column to which this command always moves.
-Then it does not try to move vertically. This goal column is stored
-in `goal-column', which is nil when there is none."
- (interactive "p")
- (pc-select-maybe-deactivate-mark)
- (with-no-warnings (next-line arg))
- (setq this-command 'next-line))
-
-(defun end-of-line-nomark (&optional arg)
- "Deactivate mark; move point to end of current line.
-With argument ARG not nil or 1, move forward ARG - 1 lines first.
-If scan reaches end of buffer, stop there without error."
- (interactive "p")
- (pc-select-maybe-deactivate-mark)
- (end-of-line arg)
- (setq this-command 'end-of-line))
-
-(defun backward-line-nomark (&optional arg)
- "Deactivate mark; move cursor vertically up ARG lines."
- (interactive "p")
- (pc-select-maybe-deactivate-mark)
- (if (null arg)
- (setq arg 1))
- (forward-line (- arg))
- (setq this-command 'forward-line)
-)
-
-(defun scroll-down-nomark (&optional arg)
- "Deactivate mark; scroll down ARG lines; or near full screen if no ARG.
-A near full screen is `next-screen-context-lines' less than a full screen.
-Negative ARG means scroll upward.
-When calling from a program, supply a number as argument or nil.
-Attempting to scroll past the edge of buffer does not raise an
-error, unless `pc-select-override-scroll-error' is nil."
- (interactive "P")
- (pc-select-maybe-deactivate-mark)
- (cond (pc-select-override-scroll-error
- (condition-case nil (scroll-down arg)
- (beginning-of-buffer (goto-char (point-min)))))
- (t (scroll-down arg))))
-
-(defun end-of-buffer-nomark (&optional arg)
- "Deactivate mark; move point to the end of the buffer.
-With arg N, put point N/10 of the way from the end.
-
-If the buffer is narrowed, this command uses the beginning and size
-of the accessible part of the buffer.
-
-Don't use this command in Lisp programs!
-\(goto-char (point-max)) is faster and avoids clobbering the mark."
- (interactive "P")
- (pc-select-maybe-deactivate-mark)
- (let ((size (- (point-max) (point-min))))
- (goto-char (if arg
- (- (point-max)
- (if (> size 10000)
- ;; Avoid overflow for large buffer sizes!
- (* (prefix-numeric-value arg)
- (/ size 10))
- (/ (* size (prefix-numeric-value arg)) 10)))
- (point-max))))
- ;; If we went to a place in the middle of the buffer,
- ;; adjust it to the beginning of a line.
- (if arg (forward-line 1)
- ;; If the end of the buffer is not already on the screen,
- ;; then scroll specially to put it near, but not at, the bottom.
- (if (let ((old-point (point)))
- (save-excursion
- (goto-char (window-start))
- (vertical-motion (window-height))
- (< (point) old-point)))
- (progn
- (overlay-recenter (point))
- (recenter -3)))))
-
-
-;;;;;;;;;;;;;;;;;;;;
-;;;;;; backwards and mark
-;;;;;;;;;;;;;;;;;;;;
-
-(defun backward-char-mark (&optional arg)
- "Ensure mark is active; move point left ARG characters (right if ARG negative).
-On attempt to pass beginning or end of buffer, stop and signal error."
- (interactive "p")
- (pc-select-ensure-mark)
- (backward-char arg))
-
-(defun backward-word-mark (&optional arg)
- "Ensure mark is active; move backward until encountering the end of a word.
-With argument, do this that many times."
- (interactive "p")
- (pc-select-ensure-mark)
- (backward-word arg))
-
-(defun backward-sexp-mark (&optional arg)
- "Ensure mark is active; move backward across one balanced expression (sexp).
-With argument, do it that many times. Negative arg -N means
-move forward across N balanced expressions."
- (interactive "p")
- (pc-select-ensure-mark)
- (backward-sexp arg))
-
-(defun backward-paragraph-mark (&optional arg)
- "Ensure mark is active; move backward to start of paragraph.
-With arg N, do it N times; negative arg -N means move forward N paragraphs.
-
-A paragraph start is the beginning of a line which is a
-`first-line-of-paragraph' or which is ordinary text and follows a
-paragraph-separating line; except: if the first real line of a
-paragraph is preceded by a blank line, the paragraph starts at that
-blank line.
-
-See `forward-paragraph' for more information."
- (interactive "p")
- (pc-select-ensure-mark)
- (backward-paragraph arg))
-
-(defun previous-line-mark (&optional arg)
- "Ensure mark is active; move cursor vertically up ARG lines.
-If there is no character in the target line exactly over the current column,
-the cursor is positioned after the character in that line which spans this
-column, or at the end of the line if it is not long enough.
-
-The command \\[set-goal-column] can be used to create
-a semipermanent goal column to which this command always moves.
-Then it does not try to move vertically.
-
-If you are thinking of using this in a Lisp program, consider using
-`forward-line' with a negative argument instead. It is usually easier
-to use and more reliable (no dependence on goal column, etc.)."
- (interactive "p")
- (pc-select-ensure-mark)
- (with-no-warnings (previous-line arg))
- (setq this-command 'previous-line))
-
-(defun beginning-of-line-mark (&optional arg)
- "Ensure mark is active; move point to beginning of current line.
-With argument ARG not nil or 1, move forward ARG - 1 lines first.
-If scan reaches end of buffer, stop there without error."
- (interactive "p")
- (pc-select-ensure-mark)
- (beginning-of-line arg))
-
-
-(defun scroll-up-mark (&optional arg)
- "Ensure mark is active; scroll upward ARG lines; or near full screen if no ARG.
-A near full screen is `next-screen-context-lines' less than a full screen.
-Negative ARG means scroll downward.
-When calling from a program, supply a number as argument or nil.
-Attempting to scroll past the edge of buffer does not raise an
-error, unless `pc-select-override-scroll-error' is nil."
- (interactive "P")
- (pc-select-ensure-mark)
- (cond (pc-select-override-scroll-error
- (condition-case nil (scroll-up arg)
- (end-of-buffer (goto-char (point-max)))))
- (t (scroll-up arg))))
-
-(defun beginning-of-buffer-mark (&optional arg)
- "Ensure mark is active; move point to the beginning of the buffer.
-With arg N, put point N/10 of the way from the beginning.
-
-If the buffer is narrowed, this command uses the beginning and size
-of the accessible part of the buffer.
-
-Don't use this command in Lisp programs!
-\(goto-char (point-min)) is faster and avoids clobbering the mark."
- (interactive "P")
- (pc-select-ensure-mark)
- (let ((size (- (point-max) (point-min))))
- (goto-char (if arg
- (+ (point-min)
- (if (> size 10000)
- ;; Avoid overflow for large buffer sizes!
- (* (prefix-numeric-value arg)
- (/ size 10))
- (/ (+ 10 (* size (prefix-numeric-value arg))) 10)))
- (point-min))))
- (if arg (forward-line 1)))
-
-;;;;;;;;
-;;; no mark
-;;;;;;;;
-
-(defun backward-char-nomark (&optional arg)
- "Deactivate mark; move point left ARG characters (right if ARG negative).
-On attempt to pass beginning or end of buffer, stop and signal error."
- (interactive "p")
- (pc-select-maybe-deactivate-mark)
- (backward-char arg))
-
-(defun backward-word-nomark (&optional arg)
- "Deactivate mark; move backward until encountering the end of a word.
-With argument, do this that many times."
- (interactive "p")
- (pc-select-maybe-deactivate-mark)
- (backward-word arg))
-
-(defun backward-sexp-nomark (&optional arg)
- "Deactivate mark; move backward across one balanced expression (sexp).
-With argument, do it that many times. Negative arg -N means
-move forward across N balanced expressions."
- (interactive "p")
- (pc-select-maybe-deactivate-mark)
- (backward-sexp arg))
-
-(defun backward-paragraph-nomark (&optional arg)
- "Deactivate mark; move backward to start of paragraph.
-With arg N, do it N times; negative arg -N means move forward N paragraphs.
-
-A paragraph start is the beginning of a line which is a
-`first-line-of-paragraph' or which is ordinary text and follows a
-paragraph-separating line; except: if the first real line of a
-paragraph is preceded by a blank line, the paragraph starts at that
-blank line.
-
-See `forward-paragraph' for more information."
- (interactive "p")
- (pc-select-maybe-deactivate-mark)
- (backward-paragraph arg))
-
-(defun previous-line-nomark (&optional arg)
- "Deactivate mark; move cursor vertically up ARG lines.
-If there is no character in the target line exactly over the current column,
-the cursor is positioned after the character in that line which spans this
-column, or at the end of the line if it is not long enough.
-
-The command \\[set-goal-column] can be used to create
-a semipermanent goal column to which this command always moves.
-Then it does not try to move vertically."
- (interactive "p")
- (pc-select-maybe-deactivate-mark)
- (with-no-warnings (previous-line arg))
- (setq this-command 'previous-line))
-
-(defun beginning-of-line-nomark (&optional arg)
- "Deactivate mark; move point to beginning of current line.
-With argument ARG not nil or 1, move forward ARG - 1 lines first.
-If scan reaches end of buffer, stop there without error."
- (interactive "p")
- (pc-select-maybe-deactivate-mark)
- (beginning-of-line arg))
-
-(defun scroll-up-nomark (&optional arg)
- "Deactivate mark; scroll upward ARG lines; or near full screen if no ARG.
-A near full screen is `next-screen-context-lines' less than a full screen.
-Negative ARG means scroll downward.
-When calling from a program, supply a number as argument or nil.
-Attempting to scroll past the edge of buffer does not raise an
-error, unless `pc-select-override-scroll-error' is nil."
- (interactive "P")
- (pc-select-maybe-deactivate-mark)
- (cond (pc-select-override-scroll-error
- (condition-case nil (scroll-up arg)
- (end-of-buffer (goto-char (point-max)))))
- (t (scroll-up arg))))
-
-(defun beginning-of-buffer-nomark (&optional arg)
- "Deactivate mark; move point to the beginning of the buffer.
-With arg N, put point N/10 of the way from the beginning.
-
-If the buffer is narrowed, this command uses the beginning and size
-of the accessible part of the buffer.
-
-Don't use this command in Lisp programs!
-\(goto-char (point-min)) is faster and avoids clobbering the mark."
- (interactive "P")
- (pc-select-maybe-deactivate-mark)
- (let ((size (- (point-max) (point-min))))
- (goto-char (if arg
- (+ (point-min)
- (if (> size 10000)
- ;; Avoid overflow for large buffer sizes!
- (* (prefix-numeric-value arg)
- (/ size 10))
- (/ (+ 10 (* size (prefix-numeric-value arg))) 10)))
- (point-min))))
- (if arg (forward-line 1)))
-
-
-(defun pc-select-define-keys (alist keymap)
- "Make KEYMAP have the key bindings specified in ALIST."
- (let ((lst alist))
- (while lst
- (define-key keymap (caar lst) (cdar lst))
- (setq lst (cdr lst)))))
-
-(defun pc-select-restore-keys (alist keymap saved-map)
- "Use ALIST to restore key bindings from SAVED-MAP into KEYMAP.
-Go through all the key bindings in ALIST, and, for each key
-binding, if KEYMAP and ALIST still agree on the key binding,
-restore the previous value of that key binding from SAVED-MAP."
- (let ((lst alist))
- (while lst
- (when (equal (lookup-key keymap (caar lst)) (cdar lst))
- (define-key keymap (caar lst) (lookup-key saved-map (caar lst))))
- (setq lst (cdr lst)))))
-
-(defmacro pc-select-add-to-alist (alist var val)
- "Ensure that ALIST contains the cons cell (VAR . VAL).
-If a cons cell whose car is VAR is already on the ALIST, update the
-cdr of that cell with VAL. Otherwise, make a new cons cell
-\(VAR . VAL), and prepend it onto ALIST."
- (let ((elt (make-symbol "elt")))
- `(let ((,elt (assq ',var ,alist)))
- (if ,elt
- (setcdr ,elt ,val)
- (setq ,alist (cons (cons ',var ,val) ,alist))))))
-
-(defmacro pc-select-save-and-set-var (var newval)
- "Set VAR to NEWVAL; save the old value.
-The old value is saved on the `pc-select-saved-settings-alist'."
- `(when (boundp ',var)
- (pc-select-add-to-alist pc-select-saved-settings-alist ,var ,var)
- (setq ,var ,newval)))
-
-(defmacro pc-select-save-and-set-mode (mode &optional arg mode-var)
- "Call the function MODE; save the old value of the variable MODE.
-MODE is presumed to be a function which turns on a minor mode. First,
-save the value of the variable MODE on `pc-select-saved-settings-alist'.
-Then, if ARG is specified, call MODE with ARG, otherwise call it with
-nil as an argument. If MODE-VAR is specified, save the value of the
-variable MODE-VAR (instead of the value of the variable MODE) on
-`pc-select-saved-settings-alist'."
- (unless mode-var (setq mode-var mode))
- `(when (fboundp ',mode)
- (pc-select-add-to-alist pc-select-saved-settings-alist
- ,mode-var ,mode-var)
- (,mode ,arg)))
-
-(defmacro pc-select-restore-var (var)
- "Restore the previous value of the variable VAR.
-Look up VAR's previous value in `pc-select-saved-settings-alist', and,
-if the value is found, set VAR to that value."
- (let ((elt (make-symbol "elt")))
- `(let ((,elt (assq ',var pc-select-saved-settings-alist)))
- (unless (null ,elt)
- (setq ,var (cdr ,elt))))))
-
-(defmacro pc-select-restore-mode (mode)
- "Restore the previous state (either on or off) of the minor mode MODE.
-Look up the value of the variable MODE on `pc-select-saved-settings-alist'.
-If the value is non-nil, call the function MODE with an argument of
-1, otherwise call it with an argument of -1."
- (let ((elt (make-symbol "elt")))
- `(when (fboundp ',mode)
- (let ((,elt (assq ',mode pc-select-saved-settings-alist)))
- (unless (null ,elt)
- (,mode (if (cdr ,elt) 1 -1)))))))
-
-
-;;;###autoload
-(define-minor-mode pc-selection-mode
- "Change mark behavior to emulate Motif, Mac or MS-Windows cut and paste style.
-
-This mode enables Delete Selection mode and Transient Mark mode.
-
-The arrow keys (and others) are bound to new functions
-which modify the status of the mark.
-
-The ordinary arrow keys disable the mark.
-The shift-arrow keys move, leaving the mark behind.
-
-C-LEFT and C-RIGHT move back or forward one word, disabling the mark.
-S-C-LEFT and S-C-RIGHT move back or forward one word, leaving the mark behind.
-
-M-LEFT and M-RIGHT move back or forward one word or sexp, disabling the mark.
-S-M-LEFT and S-M-RIGHT move back or forward one word or sexp, leaving the mark
-behind. To control whether these keys move word-wise or sexp-wise set the
-variable `pc-select-meta-moves-sexps' after loading pc-select.el but before
-turning PC Selection mode on.
-
-C-DOWN and C-UP move back or forward a paragraph, disabling the mark.
-S-C-DOWN and S-C-UP move back or forward a paragraph, leaving the mark behind.
-
-HOME moves to beginning of line, disabling the mark.
-S-HOME moves to beginning of line, leaving the mark behind.
-With Ctrl or Meta, these keys move to beginning of buffer instead.
-
-END moves to end of line, disabling the mark.
-S-END moves to end of line, leaving the mark behind.
-With Ctrl or Meta, these keys move to end of buffer instead.
-
-PRIOR or PAGE-UP scrolls and disables the mark.
-S-PRIOR or S-PAGE-UP scrolls and leaves the mark behind.
-
-S-DELETE kills the region (`kill-region').
-S-INSERT yanks text from the kill ring (`yank').
-C-INSERT copies the region into the kill ring (`copy-region-as-kill').
-
-In addition, certain other PC bindings are imitated (to avoid this, set
-the variable `pc-select-selection-keys-only' to t after loading pc-select.el
-but before calling PC Selection mode):
-
- F6 other-window
- DELETE delete-char
- C-DELETE kill-line
- M-DELETE kill-word
- C-M-DELETE kill-sexp
- C-BACKSPACE backward-kill-word
- M-BACKSPACE undo"
- ;; FIXME: bring pc-bindings-mode here ?
- nil nil nil
-
- :group 'pc-select
- :global t
-
- (if pc-selection-mode
- (if (null pc-select-key-bindings-alist)
- (progn
- (setq pc-select-saved-global-map (copy-keymap (current-global-map)))
- (setq pc-select-key-bindings-alist
- (append pc-select-default-key-bindings
- (if pc-select-selection-keys-only
- nil
- pc-select-extra-key-bindings)
- (if pc-select-meta-moves-sexps
- (car pc-select-meta-moves-sexps-key-bindings)
- (cadr pc-select-meta-moves-sexps-key-bindings))
- (if (or pc-select-selection-keys-only
- (eq window-system 'x)
- (memq system-name '(ms-dos windows-nt)))
- nil
- pc-select-tty-key-bindings)))
-
- (pc-select-define-keys pc-select-key-bindings-alist
- (current-global-map))
-
- (unless (or pc-select-selection-keys-only
- (eq window-system 'x)
- (memq system-name '(ms-dos windows-nt)))
- ;; it is not clear that we need the following line
- ;; I hope it doesn't do too much harm to leave it in, though...
- (setq pc-select-old-M-delete-binding
- (lookup-key function-key-map [M-delete]))
- (define-key function-key-map [M-delete] [?\M-d]))
-
- (when (and (not pc-select-selection-keys-only)
- (or (eq window-system 'x)
- (memq system-name '(ms-dos windows-nt)))
- (fboundp 'normal-erase-is-backspace-mode))
- (pc-select-save-and-set-mode normal-erase-is-backspace-mode 1
- normal-erase-is-backspace))
- ;; the original author also had this above:
- ;; (setq-default normal-erase-is-backspace t)
- ;; However, the documentation for the variable says that
- ;; "setting it with setq has no effect", so I'm removing it.
-
- (pc-select-save-and-set-var highlight-nonselected-windows nil)
- (pc-select-save-and-set-var transient-mark-mode t)
- (pc-select-save-and-set-var mark-even-if-inactive t)
- (pc-select-save-and-set-mode delete-selection-mode 1))
- ;;else
- ;; If the user turned on pc-selection-mode a second time
- ;; do not clobber the values of the variables that were
- ;; saved from before pc-selection mode was activated --
- ;; just make sure the values are the way we like them.
- (pc-select-define-keys pc-select-key-bindings-alist
- (current-global-map))
- (unless (or pc-select-selection-keys-only
- (eq window-system 'x)
- (memq system-name '(ms-dos windows-nt)))
- ;; it is not clear that we need the following line
- ;; I hope it doesn't do too much harm to leave it in, though...
- (define-key function-key-map [M-delete] [?\M-d]))
- (when (and (not pc-select-selection-keys-only)
- (or (eq window-system 'x)
- (memq system-name '(ms-dos windows-nt)))
- (fboundp 'normal-erase-is-backspace-mode))
- (normal-erase-is-backspace-mode 1))
- (setq highlight-nonselected-windows nil)
- (setq transient-mark-mode t)
- (setq mark-even-if-inactive t)
- (delete-selection-mode 1))
- ;;else
- (when pc-select-key-bindings-alist
- (when (and (not pc-select-selection-keys-only)
- (or (eq window-system 'x)
- (memq system-name '(ms-dos windows-nt))))
- (pc-select-restore-mode normal-erase-is-backspace-mode))
-
- (pc-select-restore-keys
- pc-select-key-bindings-alist (current-global-map)
- pc-select-saved-global-map)
-
- (pc-select-restore-var highlight-nonselected-windows)
- (pc-select-restore-var transient-mark-mode)
- (pc-select-restore-var mark-even-if-inactive)
- (pc-select-restore-mode delete-selection-mode)
- (and pc-select-old-M-delete-binding
- (define-key function-key-map [M-delete]
- pc-select-old-M-delete-binding))
- (setq pc-select-key-bindings-alist nil
- pc-select-saved-settings-alist nil))))
-
-;;; pc-select.el ends here
--- /dev/null
+;;; pc-select.el --- emulate mark, cut, copy and paste from Motif
+;;; (or MAC GUI or MS-windoze (bah)) look-and-feel
+;;; including key bindings.
+
+;; Copyright (C) 1995-1997, 2000-2011 Free Software Foundation, Inc.
+
+;; Author: Michael Staats <michael@thp.Uni-Duisburg.DE>
+;; Keywords: convenience emulations
+;; Created: 26 Sep 1995
+;; Obsolete-since: 24.1
+
+;; 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
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) 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. If not, see <http://www.gnu.org/licenses/>.
+
+;;; Commentary:
+
+;; This package emulates the mark, copy, cut and paste look-and-feel of motif
+;; programs (which is the same as the MAC gui and (sorry for that) MS-Windows).
+;; It modifies the keybindings of the cursor keys and the next, prior,
+;; home and end keys. They will modify mark-active.
+;; You can still get the old behavior of cursor moving with the
+;; control sequences C-f, C-b, etc.
+;; This package uses transient-mark-mode and
+;; delete-selection-mode.
+;;
+;; In addition to that all key-bindings from the pc-mode are
+;; done here too (as suggested by RMS).
+;;
+;; As I found out after I finished the first version, s-region.el tries
+;; to do the same.... But my code is a little more complete and using
+;; delete-selection-mode is very important for the look-and-feel.
+;; Pete Forman <pete.forman@airgun.wg.waii.com> provided some motif
+;; compliant keybindings which I added. I had to modify them a little
+;; to add the -mark and -nomark functionality of cursor moving.
+;;
+;; Credits:
+;; Many thanks to all who made comments.
+;; Thanks to RMS and Ralf Muschall <prm@rz.uni-jena.de> for criticism.
+;; Kevin Cutts <cutts@ukraine.corp.mot.com> added the beginning-of-buffer
+;; and end-of-buffer functions which I modified a little.
+;; David Biesack <sasdjb@unx.sas.com> suggested some more cleanup.
+;; Thanks to Pete Forman <pete.forman@airgun.wg.waii.com>
+;; for additional motif keybindings.
+;; Thanks to jvromans@squirrel.nl (Johan Vromans) for a bug report
+;; concerning setting of this-command.
+;; Dan Nicolaescu <done@ece.arizona.ro> suggested suppressing the
+;; scroll-up/scroll-down error.
+;; Eli Barzilay (eli@cs.bgu.ac.il) suggested the sexps functions and
+;; keybindings.
+;;
+;; Ok, some details about the idea of PC Selection mode:
+;;
+;; o The standard keys for moving around (right, left, up, down, home, end,
+;; prior, next, called "move-keys" from now on) will always de-activate
+;; the mark.
+;; o If you press "Shift" together with the "move-keys", the region
+;; you pass along is activated
+;; o You have the copy, cut and paste functions (as in many other programs)
+;; which will operate on the active region
+;; It was not possible to bind them to C-v, C-x and C-c for obvious
+;; emacs reasons.
+;; They will be bound according to the "old" behavior to S-delete (cut),
+;; S-insert (paste) and C-insert (copy). These keys do the same in many
+;; other programs.
+;;
+
+;;; Code:
+
+;; Customization:
+(defgroup pc-select nil
+ "Emulate pc bindings."
+ :prefix "pc-select"
+ :group 'emulations)
+
+(define-obsolete-variable-alias 'pc-select-override-scroll-error
+ 'scroll-error-top-bottom
+ "24.1")
+(defcustom pc-select-override-scroll-error t
+ "Non-nil means don't generate error on scrolling past edge of buffer.
+This variable applies in PC Selection mode only.
+The scroll commands normally generate an error if you try to scroll
+past the top or bottom of the buffer. This is annoying when selecting
+text with these commands. If you set this variable to non-nil, these
+errors are suppressed."
+ :type 'boolean
+ :group 'pc-select)
+
+(defcustom pc-select-selection-keys-only nil
+ "Non-nil means only bind the basic selection keys when started.
+Other keys that emulate pc-behavior will be untouched.
+This gives mostly Emacs-like behavior with only the selection keys enabled."
+ :type 'boolean
+ :group 'pc-select)
+
+(defcustom pc-select-meta-moves-sexps nil
+ "Non-nil means move sexp-wise with Meta key, otherwise move word-wise."
+ :type 'boolean
+ :group 'pc-select)
+
+(defcustom pc-selection-mode-hook nil
+ "The hook to run when PC Selection mode is toggled."
+ :type 'hook
+ :group 'pc-select)
+
+(defvar pc-select-saved-settings-alist nil
+ "The values of the variables before PC Selection mode was toggled on.
+When PC Selection mode is toggled on, it sets quite a few variables
+for its own purposes. This alist holds the original values of the
+variables PC Selection mode had set, so that these variables can be
+restored to their original values when PC Selection mode is toggled off.")
+
+(defvar pc-select-map nil
+ "The keymap used as the global map when PC Selection mode is on." )
+
+(defvar pc-select-saved-global-map nil
+ "The global map that was in effect when PC Selection mode was toggled on.")
+
+(defvar pc-select-key-bindings-alist nil
+ "This alist holds all the key bindings PC Selection mode sets.")
+
+(defvar pc-select-default-key-bindings nil
+ "These key bindings always get set by PC Selection mode.")
+
+(defvar pc-select-extra-key-bindings
+ ;; The following keybindings are for standard ISO keyboards
+ ;; as they are used with IBM compatible PCs, IBM RS/6000,
+ ;; MACs, many X-Stations and probably more.
+ '(;; Commented out since it's been standard at least since Emacs-21.
+ ;;([S-insert] . yank)
+ ;;([C-insert] . copy-region-as-kill)
+ ;;([S-delete] . kill-region)
+
+ ;; The following bindings are useful on Sun Type 3 keyboards
+ ;; They implement the Get-Delete-Put (copy-cut-paste)
+ ;; functions from sunview on the L6, L8 and L10 keys
+ ;; Sam Steingold <sds@gnu.org> says that f16 is copy and f18 is paste.
+ ([f16] . copy-region-as-kill)
+ ([f18] . yank)
+ ([f20] . kill-region)
+
+ ;; The following bindings are from Pete Forman.
+ ([f6] . other-window) ; KNextPane F6
+ ([C-delete] . kill-line) ; KEraseEndLine cDel
+ ("\M-\d" . undo) ; KUndo aBS
+
+ ;; The following binding is taken from pc-mode.el
+ ;; as suggested by RMS.
+ ;; I only used the one that is not covered above.
+ ([C-M-delete] . kill-sexp)
+ ;; Next line proposed by Eli Barzilay
+ ([C-escape] . electric-buffer-list))
+ "Key bindings to set only if `pc-select-selection-keys-only' is nil.")
+
+(defvar pc-select-meta-moves-sexps-key-bindings
+ '((([M-right] . forward-sexp)
+ ([M-left] . backward-sexp))
+ (([M-right] . forward-word)
+ ([M-left] . backward-word)))
+ "The list of key bindings controlled by `pc-select-meta-moves-sexp'.
+The bindings in the car of this list get installed if
+`pc-select-meta-moves-sexp' is t, the bindings in the cadr of this
+list get installed otherwise.")
+
+;; This is for tty. We don't turn on normal-erase-is-backspace,
+;; but bind keys as pc-selection-mode did before
+;; normal-erase-is-backspace was invented, to keep us back
+;; compatible.
+(defvar pc-select-tty-key-bindings
+ '(([delete] . delete-char) ; KDelete Del
+ ([C-backspace] . backward-kill-word))
+ "The list of key bindings controlled by `pc-select-selection-keys-only'.
+These key bindings get installed when running in a tty, but only if
+`pc-select-selection-keys-only' is nil.")
+
+(defvar pc-select-old-M-delete-binding nil
+ "Holds the old mapping of [M-delete] in the `function-key-map'.
+This variable holds the value associated with [M-delete] in the
+`function-key-map' before PC Selection mode had changed that
+association.")
+
+;;;;
+;; misc
+;;;;
+
+(provide 'pc-select)
+
+(defun pc-select-define-keys (alist keymap)
+ "Make KEYMAP have the key bindings specified in ALIST."
+ (let ((lst alist))
+ (while lst
+ (define-key keymap (caar lst) (cdar lst))
+ (setq lst (cdr lst)))))
+
+(defun pc-select-restore-keys (alist keymap saved-map)
+ "Use ALIST to restore key bindings from SAVED-MAP into KEYMAP.
+Go through all the key bindings in ALIST, and, for each key
+binding, if KEYMAP and ALIST still agree on the key binding,
+restore the previous value of that key binding from SAVED-MAP."
+ (let ((lst alist))
+ (while lst
+ (when (equal (lookup-key keymap (caar lst)) (cdar lst))
+ (define-key keymap (caar lst) (lookup-key saved-map (caar lst))))
+ (setq lst (cdr lst)))))
+
+(defmacro pc-select-add-to-alist (alist var val)
+ "Ensure that ALIST contains the cons cell (VAR . VAL).
+If a cons cell whose car is VAR is already on the ALIST, update the
+cdr of that cell with VAL. Otherwise, make a new cons cell
+\(VAR . VAL), and prepend it onto ALIST."
+ (let ((elt (make-symbol "elt")))
+ `(let ((,elt (assq ',var ,alist)))
+ (if ,elt
+ (setcdr ,elt ,val)
+ (setq ,alist (cons (cons ',var ,val) ,alist))))))
+
+(defmacro pc-select-save-and-set-var (var newval)
+ "Set VAR to NEWVAL; save the old value.
+The old value is saved on the `pc-select-saved-settings-alist'."
+ `(when (boundp ',var)
+ (pc-select-add-to-alist pc-select-saved-settings-alist ,var ,var)
+ (setq ,var ,newval)))
+
+(defmacro pc-select-save-and-set-mode (mode &optional arg mode-var)
+ "Call the function MODE; save the old value of the variable MODE.
+MODE is presumed to be a function which turns on a minor mode. First,
+save the value of the variable MODE on `pc-select-saved-settings-alist'.
+Then, if ARG is specified, call MODE with ARG, otherwise call it with
+nil as an argument. If MODE-VAR is specified, save the value of the
+variable MODE-VAR (instead of the value of the variable MODE) on
+`pc-select-saved-settings-alist'."
+ (unless mode-var (setq mode-var mode))
+ `(when (fboundp ',mode)
+ (pc-select-add-to-alist pc-select-saved-settings-alist
+ ,mode-var ,mode-var)
+ (,mode ,arg)))
+
+(defmacro pc-select-restore-var (var)
+ "Restore the previous value of the variable VAR.
+Look up VAR's previous value in `pc-select-saved-settings-alist', and,
+if the value is found, set VAR to that value."
+ (let ((elt (make-symbol "elt")))
+ `(let ((,elt (assq ',var pc-select-saved-settings-alist)))
+ (unless (null ,elt)
+ (setq ,var (cdr ,elt))))))
+
+(defmacro pc-select-restore-mode (mode)
+ "Restore the previous state (either on or off) of the minor mode MODE.
+Look up the value of the variable MODE on `pc-select-saved-settings-alist'.
+If the value is non-nil, call the function MODE with an argument of
+1, otherwise call it with an argument of -1."
+ (let ((elt (make-symbol "elt")))
+ `(when (fboundp ',mode)
+ (let ((,elt (assq ',mode pc-select-saved-settings-alist)))
+ (unless (null ,elt)
+ (,mode (if (cdr ,elt) 1 -1)))))))
+
+
+;;;###autoload
+(define-minor-mode pc-selection-mode
+ "Change mark behavior to emulate Motif, Mac or MS-Windows cut and paste style.
+
+This mode enables Delete Selection mode and Transient Mark mode.
+
+The arrow keys (and others) are bound to new functions
+which modify the status of the mark.
+
+The ordinary arrow keys disable the mark.
+The shift-arrow keys move, leaving the mark behind.
+
+C-LEFT and C-RIGHT move back or forward one word, disabling the mark.
+S-C-LEFT and S-C-RIGHT move back or forward one word, leaving the mark behind.
+
+M-LEFT and M-RIGHT move back or forward one word or sexp, disabling the mark.
+S-M-LEFT and S-M-RIGHT move back or forward one word or sexp, leaving the mark
+behind. To control whether these keys move word-wise or sexp-wise set the
+variable `pc-select-meta-moves-sexps' after loading pc-select.el but before
+turning PC Selection mode on.
+
+C-DOWN and C-UP move back or forward a paragraph, disabling the mark.
+S-C-DOWN and S-C-UP move back or forward a paragraph, leaving the mark behind.
+
+HOME moves to beginning of line, disabling the mark.
+S-HOME moves to beginning of line, leaving the mark behind.
+With Ctrl or Meta, these keys move to beginning of buffer instead.
+
+END moves to end of line, disabling the mark.
+S-END moves to end of line, leaving the mark behind.
+With Ctrl or Meta, these keys move to end of buffer instead.
+
+PRIOR or PAGE-UP scrolls and disables the mark.
+S-PRIOR or S-PAGE-UP scrolls and leaves the mark behind.
+
+S-DELETE kills the region (`kill-region').
+S-INSERT yanks text from the kill ring (`yank').
+C-INSERT copies the region into the kill ring (`copy-region-as-kill').
+
+In addition, certain other PC bindings are imitated (to avoid this, set
+the variable `pc-select-selection-keys-only' to t after loading pc-select.el
+but before calling PC Selection mode):
+
+ F6 other-window
+ DELETE delete-char
+ C-DELETE kill-line
+ M-DELETE kill-word
+ C-M-DELETE kill-sexp
+ C-BACKSPACE backward-kill-word
+ M-BACKSPACE undo"
+ ;; FIXME: bring pc-bindings-mode here ?
+ nil nil nil
+
+ :group 'pc-select
+ :global t
+
+ (if pc-selection-mode
+ (if (null pc-select-key-bindings-alist)
+ (progn
+ (setq pc-select-saved-global-map (copy-keymap (current-global-map)))
+ (setq pc-select-key-bindings-alist
+ (append pc-select-default-key-bindings
+ (if pc-select-selection-keys-only
+ nil
+ pc-select-extra-key-bindings)
+ (if pc-select-meta-moves-sexps
+ (car pc-select-meta-moves-sexps-key-bindings)
+ (cadr pc-select-meta-moves-sexps-key-bindings))
+ (if (or pc-select-selection-keys-only
+ (eq window-system 'x)
+ (memq system-name '(ms-dos windows-nt)))
+ nil
+ pc-select-tty-key-bindings)))
+
+ (pc-select-define-keys pc-select-key-bindings-alist
+ (current-global-map))
+
+ (unless (or pc-select-selection-keys-only
+ (eq window-system 'x)
+ (memq system-name '(ms-dos windows-nt)))
+ ;; it is not clear that we need the following line
+ ;; I hope it doesn't do too much harm to leave it in, though...
+ (setq pc-select-old-M-delete-binding
+ (lookup-key function-key-map [M-delete]))
+ (define-key function-key-map [M-delete] [?\M-d]))
+
+ (when (and (not pc-select-selection-keys-only)
+ (or (eq window-system 'x)
+ (memq system-name '(ms-dos windows-nt)))
+ (fboundp 'normal-erase-is-backspace-mode))
+ (pc-select-save-and-set-mode normal-erase-is-backspace-mode 1
+ normal-erase-is-backspace))
+ ;; the original author also had this above:
+ ;; (setq-default normal-erase-is-backspace t)
+ ;; However, the documentation for the variable says that
+ ;; "setting it with setq has no effect", so I'm removing it.
+
+ (pc-select-save-and-set-var highlight-nonselected-windows nil)
+ (pc-select-save-and-set-var transient-mark-mode t)
+ (pc-select-save-and-set-var shift-select-mode t)
+ (pc-select-save-and-set-var mark-even-if-inactive t)
+ (pc-select-save-and-set-mode delete-selection-mode 1))
+ ;;else
+ ;; If the user turned on pc-selection-mode a second time
+ ;; do not clobber the values of the variables that were
+ ;; saved from before pc-selection mode was activated --
+ ;; just make sure the values are the way we like them.
+ (pc-select-define-keys pc-select-key-bindings-alist
+ (current-global-map))
+ (unless (or pc-select-selection-keys-only
+ (eq window-system 'x)
+ (memq system-name '(ms-dos windows-nt)))
+ ;; it is not clear that we need the following line
+ ;; I hope it doesn't do too much harm to leave it in, though...
+ (define-key function-key-map [M-delete] [?\M-d]))
+ (when (and (not pc-select-selection-keys-only)
+ (or (eq window-system 'x)
+ (memq system-name '(ms-dos windows-nt)))
+ (fboundp 'normal-erase-is-backspace-mode))
+ (normal-erase-is-backspace-mode 1))
+ (setq highlight-nonselected-windows nil)
+ (setq transient-mark-mode t)
+ (setq mark-even-if-inactive t)
+ (delete-selection-mode 1))
+ ;;else
+ (when pc-select-key-bindings-alist
+ (when (and (not pc-select-selection-keys-only)
+ (or (eq window-system 'x)
+ (memq system-name '(ms-dos windows-nt))))
+ (pc-select-restore-mode normal-erase-is-backspace-mode))
+
+ (pc-select-restore-keys
+ pc-select-key-bindings-alist (current-global-map)
+ pc-select-saved-global-map)
+
+ (pc-select-restore-var highlight-nonselected-windows)
+ (pc-select-restore-var transient-mark-mode)
+ (pc-select-restore-var shift-select-mode)
+ (pc-select-restore-var mark-even-if-inactive)
+ (pc-select-restore-mode delete-selection-mode)
+ (and pc-select-old-M-delete-binding
+ (define-key function-key-map [M-delete]
+ pc-select-old-M-delete-binding))
+ (setq pc-select-key-bindings-alist nil
+ pc-select-saved-settings-alist nil))))
+(make-obsolete 'pc-selection-mode 'delete-selection-mode "24.1")
+
+;;; pc-select.el ends here
HCoop / bpt / emacs.git / commitdiff