4.4BSD/usr/src/contrib/emacs-18.57/lisp/edt.el
;; Copyright (C) 1986 Free Software Foundation, Inc.
;; It started from public domain code by Mike Clarkson
;; but has been greatly altered.
;; 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 1, 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; see the file COPYING. If not, write to
;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
(require 'keypad)
(defvar edt-last-deleted-lines ""
"Last text deleted by an EDT emulation line-delete command.")
(defvar edt-last-deleted-words ""
"Last text deleted by an EDT emulation word-delete command.")
(defvar edt-last-deleted-chars ""
"Last text deleted by an EDT emulation character-delete command.")
(defun delete-current-line (num)
"Delete one or specified number of lines after point.
This includes the newline character at the end of each line.
They are saved for the EDT undelete-lines command."
(interactive "p")
(let ((beg (point)))
(forward-line num)
(if (not (eq (preceding-char) ?\n))
(insert "\n"))
(setq edt-last-deleted-lines
(buffer-substring beg (point)))
(delete-region beg (point))))
(defun delete-to-eol (num)
"Delete text up to end of line.
With argument, delete up to to Nth line-end past point.
They are saved for the EDT undelete-lines command."
(interactive "p")
(let ((beg (point)))
(forward-char 1)
(end-of-line num)
(setq edt-last-deleted-lines
(buffer-substring beg (point)))
(delete-region beg (point))))
(defun delete-current-word (num)
"Delete one or specified number of words after point.
They are saved for the EDT undelete-words command."
(interactive "p")
(let ((beg (point)))
(forward-word num)
(setq edt-last-deleted-words
(buffer-substring beg (point)))
(delete-region beg (point))))
(defun delete-previous-word (num)
"Delete one or specified number of words before point.
They are saved for the EDT undelete-words command."
(interactive "p")
(let ((beg (point)))
(forward-word (- num))
(setq edt-last-deleted-words
(buffer-substring (point) beg))
(delete-region beg (point))))
(defun delete-current-char (num)
"Delete one or specified number of characters after point.
They are saved for the EDT undelete-chars command."
(interactive "p")
(setq edt-last-deleted-chars
(buffer-substring (point) (min (point-max) (+ (point) num))))
(delete-region (point) (min (point-max) (+ (point) num))))
(defun delete-previous-char (num)
"Delete one or specified number of characters before point.
They are saved for the EDT undelete-chars command."
(interactive "p")
(setq edt-last-deleted-chars
(buffer-substring (max (point-min) (- (point) num)) (point)))
(delete-region (max (point-min) (- (point) num)) (point)))
(defun undelete-lines ()
"Yank lines deleted by last EDT line-deletion command."
(interactive)
(insert edt-last-deleted-lines))
(defun undelete-words ()
"Yank words deleted by last EDT word-deletion command."
(interactive)
(insert edt-last-deleted-words))
(defun undelete-chars ()
"Yank characters deleted by last EDT character-deletion command."
(interactive)
(insert edt-last-deleted-chars))
(defun next-end-of-line (num)
"Move to end of line; if at end, move to end of next line.
Accepts a prefix argument for the number of lines to move."
(interactive "p")
(forward-char)
(end-of-line num))
(defun previous-end-of-line (num)
"Move EOL upward.
Accepts a prefix argument for the number of lines to move."
(interactive "p")
(end-of-line (- 1 num)))
(defun forward-to-word (num)
"Move to next word-beginning, or to Nth following word-beginning."
(interactive "p")
(forward-word (1+ num))
(forward-word -1))
(defun backward-to-word (num)
"Move back to word-end, or to Nth word-end seen."
(interactive "p")
(forward-word (- (1+ num)))
(forward-word 1))
(defun backward-line (num)
"Move point to start of previous line.
Prefix argument serves as repeat-count."
(interactive "p")
(forward-line (- num)))
(defun scroll-window-down (num)
"Scroll the display down a window-full.
Accepts a prefix argument for the number of window-fulls to scroll."
(interactive "p")
(scroll-down (- (* (window-height) num) 2)))
(defun scroll-window-up (num)
"Scroll the display up a window-full.
Accepts a prefix argument for the number of window-fulls to scroll."
(interactive "p")
(scroll-up (- (* (window-height) num) 2)))
(defun next-paragraph (num)
"Move to beginning of the next indented paragraph.
Accepts a prefix argument for the number of paragraphs."
(interactive "p")
(while (> num 0)
(next-line 1)
(forward-paragraph)
(previous-line 1)
(if (eolp) (next-line 1))
(setq num (1- num))))
(defun previous-paragraph (num)
"Move to beginning of previous indented paragraph.
Accepts a prefix argument for the number of paragraphs."
(interactive "p")
(while (> num 0)
(backward-paragraph)
(previous-line 1)
(if (eolp) (next-line 1))
(setq num (1- num))))
(defun move-to-beginning ()
"Move cursor to the beginning of buffer, but don't set the mark."
(interactive)
(goto-char (point-min)))
(defun move-to-end ()
"Move cursor to the end of buffer, but don't set the mark."
(interactive)
(goto-char (point-max)))
(defun goto-percent (perc)
"Move point to ARG percentage of the buffer."
(interactive "NGoto-percentage: ")
(if (or (> perc 100) (< perc 0))
(error "Percentage %d out of range 0 < percent < 100" perc)
(goto-char (/ (* (point-max) perc) 100))))
(defun update-mode-line ()
"Make sure mode-line in the current buffer reflects all changes."
(set-buffer-modified-p (buffer-modified-p))
(sit-for 0))
(defun advance-direction ()
"Set EDT Advance mode so keypad commands move forward."
(interactive)
(setq edt-direction-string " ADVANCE")
(define-key function-keymap "\C-c" 'isearch-forward) ; PF3
(define-key function-keymap "8" 'scroll-window-up) ; "8"
(define-key function-keymap "7" 'next-paragraph) ; "7"
(define-key function-keymap "1" 'forward-to-word) ; "1"
(define-key function-keymap "2" 'next-end-of-line) ; "2"
(define-key function-keymap "3" 'forward-char) ; "3"
(define-key function-keymap "0" 'forward-line) ; "0"
(update-mode-line))
(defun backup-direction ()
"Set EDT Backup mode so keypad commands move backward."
(interactive)
(setq edt-direction-string " BACKUP")
(define-key function-keymap "\C-c" 'isearch-backward) ; PF3
(define-key function-keymap "8" 'scroll-window-down) ; "8"
(define-key function-keymap "7" 'previous-paragraph) ; "7"
(define-key function-keymap "1" 'backward-to-word) ; "1"
(define-key function-keymap "2" 'previous-end-of-line) ; "2"
(define-key function-keymap "3" 'backward-char) ; "3"
(define-key function-keymap "0" 'backward-line) ; "0"
(update-mode-line))
(defun beginning-of-window ()
"Home cursor to top of window."
(interactive)
(move-to-window-line 0))
(defun line-to-bottom-of-window ()
"Move the current line to the top of the window."
(interactive)
(recenter -1))
(defun line-to-top-of-window ()
"Move the current line to the top of the window."
(interactive)
(recenter 0))
(defun case-flip-character (num)
"Change the case of the character under the cursor.
Accepts a prefix argument of the number of characters to invert."
(interactive "p")
(while (> num 0)
(funcall (if (<= ?a (following-char))
'upcase-region 'downcase-region)
(point) (1+ (point)))
(forward-char 1)
(setq num (1- num))))
(defun indent-or-fill-region ()
"Fill region in text modes, indent region in programming language modes."
(interactive)
(if (string= paragraph-start "^$\\|^ ")
(indent-region (point) (mark) nil)
(fill-region (point) (mark))))
(defun mark-section-wisely ()
"Mark the section in a manner consistent with the major-mode.
Uses mark-defun for emacs-lisp, lisp,
mark-c-function for C,
and mark-paragraph for other modes."
(interactive)
(cond ((eq major-mode 'emacs-lisp-mode)
(mark-defun))
((eq major-mode 'lisp-mode)
(mark-defun))
((eq major-mode 'c-mode)
(mark-c-function))
(t (mark-paragraph))))
;;; Key Bindings
(defun edt-emulation-on ()
"Begin emulating DEC's EDT editor.
Certain keys are rebound; including nearly all keypad keys.
Use \\[edt-emulation-off] to undo all rebindings except the keypad keys.
Note that this function does not work if called directly from the .emacs file.
Instead, the .emacs file should do (setq term-setup-hook 'edt-emulation-on)
Then this function will be called at the time when it will work."
(interactive)
(advance-direction)
(edt-bind-gold-keypad) ;Must do this *after* $TERM.el is loaded
(setq edt-mode-old-c-\\ (lookup-key global-map "\C-\\"))
(global-set-key "\C-\\" 'quoted-insert)
(setq edt-mode-old-delete (lookup-key global-map "\177"))
(global-set-key "\177" 'delete-previous-char) ;"Delete"
(setq edt-mode-old-lisp-delete (lookup-key emacs-lisp-mode-map "\177"))
(define-key emacs-lisp-mode-map "\177" 'delete-previous-char) ;"Delete"
(define-key lisp-mode-map "\177" 'delete-previous-char) ;"Delete"
(setq edt-mode-old-linefeed (lookup-key global-map "\C-j"))
(global-set-key "\C-j" 'delete-previous-word) ;"LineFeed"
(define-key esc-map "?" 'apropos)) ;"<ESC>?"
(defun edt-emulation-off ()
"Return from EDT emulation to normal Emacs key bindings.
The keys redefined by \\[edt-emulation-on] are given their old definitions."
(interactive)
(setq edt-direction-string nil)
(global-set-key "\C-\\" edt-mode-old-c-\\)
(global-set-key "\177" edt-mode-old-delete) ;"Delete"
(define-key emacs-lisp-mode-map "\177" edt-mode-old-lisp-delete) ;"Delete"
(define-key lisp-mode-map "\177" edt-mode-old-lisp-delete) ;"Delete"
(global-set-key "\C-j" edt-mode-old-linefeed)) ;"LineFeed"
(define-key function-keymap "u" 'previous-line) ;Up arrow
(define-key function-keymap "d" 'next-line) ;down arrow
(define-key function-keymap "l" 'backward-char) ;right arrow
(define-key function-keymap "r" 'forward-char) ;left arrow
(define-key function-keymap "h" 'beginning-of-window) ;home
(define-key function-keymap "\C-b" 'describe-key) ;PF2
(define-key function-keymap "\C-d" 'delete-current-line);PF4
(define-key function-keymap "9" 'append-to-buffer) ;9 keypad key, etc.
(define-key function-keymap "-" 'delete-current-word)
(define-key function-keymap "4" 'advance-direction)
(define-key function-keymap "5" 'backup-direction)
(define-key function-keymap "6" 'kill-region)
(define-key function-keymap "," 'delete-current-char)
(define-key function-keymap "." 'set-mark-command)
(define-key function-keymap "e" 'other-window) ;enter key
(define-key function-keymap "\C-a" 'GOLD-prefix) ;PF1 ("gold")
(setq GOLD-map (make-keymap))
(fset 'GOLD-prefix GOLD-map)
(defvar GOLD-map nil
"GOLD-map maps the function keys on the VT100 keyboard preceeded
by the PF1 key. GOLD is the ASCII the 7-bit escape sequence <ESC>OP.")
(defun define-keypad-key (keymap function-keymap-slot definition)
(let ((function-key-sequence (function-key-sequence function-keymap-slot)))
(if function-key-sequence
(define-key keymap function-key-sequence definition))))
;;Bind GOLD/Keyboard keys
(define-key GOLD-map "\C-g" 'keyboard-quit) ; just for safety
(define-key GOLD-map "\177" 'delete-window) ;"Delete"
(define-key GOLD-map "\C-h" 'delete-other-windows) ;"BackSpace"
(define-key GOLD-map "\C-m" 'newline-and-indent) ;"Return"
(define-key GOLD-map " " 'undo) ;"Spacebar"
(define-key GOLD-map "%" 'goto-percent) ; "%"
(define-key GOLD-map "=" 'goto-line) ; "="
(define-key GOLD-map "`" 'what-line) ; "`"
(define-key GOLD-map "\C-\\" 'split-window-vertically) ; "Control-\"
; GOLD letter combinations:
(define-key GOLD-map "b" 'buffer-menu) ; "b"
(define-key GOLD-map "B" 'buffer-menu) ; "B"
(define-key GOLD-map "d" 'delete-window) ; "d"
(define-key GOLD-map "D" 'delete-window) ; "D"
(define-key GOLD-map "e" 'compile) ; "e"
(define-key GOLD-map "E" 'compile) ; "E"
(define-key GOLD-map "i" 'insert-file) ; "i"
(define-key GOLD-map "I" 'insert-file) ; "I"
(define-key GOLD-map "l" 'goto-line) ; "l"
(define-key GOLD-map "L" 'goto-line) ; "L"
(define-key GOLD-map "m" 'save-some-buffers) ; "m"
(define-key GOLD-map "M" 'save-some-buffers) ; "m"
(define-key GOLD-map "n" 'next-error) ; "n"
(define-key GOLD-map "N" 'next-error) ; "N"
(define-key GOLD-map "o" 'switch-to-buffer-other-window) ; "o"
(define-key GOLD-map "O" 'switch-to-buffer-other-window) ; "O"
(define-key GOLD-map "r" 'revert-file) ; "r"
(define-key GOLD-map "r" 'revert-file) ; "R"
(define-key GOLD-map "s" 'save-buffer) ; "s"
(define-key GOLD-map "S" 'save-buffer) ; "S"
(define-key GOLD-map "v" 'find-file-other-window) ; "v"
(define-key GOLD-map "V" 'find-file-other-window) ; "V"
(define-key GOLD-map "w" 'write-file) ; "w"
(define-key GOLD-map "w" 'write-file) ; "W"
;(define-key GOLD-map "z" 'shrink-window) ; "z"
;(define-key GOLD-map "Z" 'shrink-window) ; "z"
;Bind GOLD/Keypad keys
(defun edt-bind-gold-keypad ()
(define-keypad-key GOLD-map ?u 'line-to-top-of-window) ;"up-arrow"
(define-keypad-key GOLD-map ?d 'line-to-bottom-of-window) ;"down-arrow"
(define-keypad-key GOLD-map ?l 'backward-sentence) ;"left-arrow"
(define-keypad-key GOLD-map ?r 'forward-sentence) ;"right-arrow"
(define-keypad-key GOLD-map ?\C-a 'mark-section-wisely) ;Gold "PF1"
(define-keypad-key GOLD-map ?\C-b 'describe-function) ;Help "PF2"
(define-keypad-key GOLD-map ?\C-c 'occur) ;Find "PF3"
(define-keypad-key GOLD-map ?\C-d 'undelete-lines) ;Und Line "PF4"
(define-keypad-key GOLD-map ?0 'open-line) ;Open L "0"
(define-keypad-key GOLD-map ?1 'case-flip-character) ;Chgcase "1"
(define-keypad-key GOLD-map ?2 'delete-to-eol) ;Del EOL "2"
(define-keypad-key GOLD-map ?3 'copy-region-as-kill) ;Copy "3"
(define-keypad-key GOLD-map ?4 'move-to-end) ;Bottom "4"
(define-keypad-key GOLD-map ?5 'move-to-beginning) ;Top "5"
(define-keypad-key GOLD-map ?6 'yank) ;Paste "6"
(define-keypad-key GOLD-map ?7 'execute-extended-command) ;Command "7"
(define-keypad-key GOLD-map ?8 'indent-or-fill-region) ;Fill "8"
(define-keypad-key GOLD-map ?9 'replace-regexp) ;Replace "9"
(define-keypad-key GOLD-map ?- 'undelete-words) ;UND word "-"
(define-keypad-key GOLD-map ?, 'undelete-chars) ;UND Char ","
(define-keypad-key GOLD-map ?. 'redraw-display) ;Reset Window "."
(define-keypad-key GOLD-map ?e 'shell-command)) ;"ENTER"
;; Make direction of motion show in mode line
;; while EDT emulation is turned on.
;; Note that the keypad is always turned on when in Emacs.
(or (assq 'edt-direction-string minor-mode-alist)
(setq minor-mode-alist (cons '(edt-direction-string edt-direction-string)
minor-mode-alist)))