1 ;;; tpu-edt.el --- Emacs emulating TPU emulating EDT
3 ;; Copyright (C) 1993, 1994, 1995, 2000, 2005 Free Software Foundation, Inc.
5 ;; Author: Rob Riepel <riepel@networking.stanford.edu>
6 ;; Maintainer: Rob Riepel <riepel@networking.stanford.edu>
8 ;; Keywords: emulations
10 ;; This file is part of GNU Emacs.
12 ;; GNU Emacs is free software; you can redistribute it and/or modify
13 ;; it under the terms of the GNU General Public License as published by
14 ;; the Free Software Foundation; either version 2, or (at your option)
17 ;; GNU Emacs is distributed in the hope that it will be useful,
18 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
19 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 ;; GNU General Public License for more details.
22 ;; You should have received a copy of the GNU General Public License
23 ;; along with GNU Emacs; see the file COPYING. If not, write to the
24 ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
25 ;; Boston, MA 02110-1301, USA.
27 ;; TPU-edt is based on tpu.el by Jeff Kowalski and Bob Covey.
31 ;; %% TPU-edt -- Emacs emulating TPU emulating EDT
36 ;; % Differences Between TPU-edt and DEC TPU/edt
38 ;; % Customizing TPU-edt using the Emacs Initialization File
39 ;; % Regular Expressions in TPU-edt
44 ;; TPU-edt emulates the popular DEC VMS editor EDT (actually, it emulates
45 ;; DEC TPU's EDT emulation, hence the name TPU-edt). TPU-edt features the
46 ;; following TPU/edt functionality:
54 ;; . Rectangular cut and paste
55 ;; . Multiple windows and buffers
56 ;; . TPU line-mode REPLACE command
57 ;; . Wild card search and substitution
58 ;; . Configurable through an initialization file
59 ;; . History recall of search strings, file names, and commands
61 ;; Please note that TPU-edt does NOT emulate TPU. It emulates TPU's EDT
62 ;; emulation. Very few TPU line-mode commands are supported.
64 ;; TPU-edt, like its VMS cousin, works on VT-series terminals with DEC
65 ;; style keyboards. VT terminal emulators, including xterm with the
66 ;; appropriate key translations, work just fine too.
68 ;; TPU-edt works with X-windows. This is accomplished through a TPU-edt X
69 ;; key map. The TPU-edt module tpu-mapper creates this map and stores it
70 ;; in a file. Tpu-mapper will be run automatically the first time you
71 ;; invoke the X-windows version of emacs, or you can run it by hand. See
72 ;; the commentary in tpu-mapper.el for details.
75 ;; %% Differences Between TPU-edt and DEC TPU/edt
77 ;; In some cases, Emacs doesn't support text highlighting, so selected
78 ;; regions are not shown in inverse video. Emacs uses the concept of "the
79 ;; mark". The mark is set at one end of a selected region; the cursor is
80 ;; at the other. In cases where the selected region cannot be shown in
81 ;; inverse video an at sign (@) appears in the mode line when mark is set.
82 ;; The native emacs command ^X^X (Control-X twice) exchanges the cursor
83 ;; with the mark; this provides a handy way to find the location of the
86 ;; In TPU the cursor can be either bound or free. Bound means the cursor
87 ;; cannot wander outside the text of the file being edited. Free means
88 ;; the arrow keys can move the cursor past the ends of lines. Free is the
89 ;; default mode in TPU; bound is the only mode in EDT. Bound is the only
90 ;; mode in the base version of TPU-edt; optional extensions add an
91 ;; approximation of free mode, see the commentary in tpu-extras.el for
94 ;; Like TPU, emacs uses multiple buffers. Some buffers are used to hold
95 ;; files you are editing; other "internal" buffers are used for emacs' own
96 ;; purposes (like showing you help). Here are some commands for dealing
99 ;; Gold-B moves to next buffer, including internal buffers
100 ;; Gold-N moves to next buffer containing a file
101 ;; Gold-M brings up a buffer menu (like TPU "show buffers")
103 ;; Emacs is very fond of throwing up new windows. Dealing with all these
104 ;; windows can be a little confusing at first, so here are a few commands
107 ;; Gold-Next_Scr moves to the next window on the screen
108 ;; Gold-Prev_Scr moves to the previous window on the screen
109 ;; Gold-TAB also moves to the next window on the screen
111 ;; Control-x 1 deletes all but the current window
112 ;; Control-x 0 deletes the current window
114 ;; Note that the buffers associated with deleted windows still exist!
116 ;; Like TPU, TPU-edt has a "command" function, invoked with Gold-KP7 or
117 ;; Do. Most of the commands available are emacs commands. Some TPU
118 ;; commands are available, they are: replace, exit, quit, include, and
119 ;; Get (unfortunately, "get" is an internal emacs function, so we are
120 ;; stuck with "Get" - to make life easier, Get is available as Gold-g).
122 ;; TPU-edt supports the recall of commands, file names, and search
123 ;; strings. The history of strings recalled differs slightly from
124 ;; TPU/edt, but it is still very convenient.
126 ;; Help is available! The traditional help keys (Help and PF2) display
127 ;; a small help file showing the default keypad layout, control key
128 ;; functions, and Gold key functions. Pressing any key inside of help
129 ;; splits the screen and prints a description of the function of the
130 ;; pressed key. Gold-PF2 invokes the native emacs help, with its
131 ;; zillions of options.
133 ;; Thanks to emacs, TPU-edt has some extensions that may make your life
134 ;; easier, or at least more interesting. For example, Gold-r toggles
135 ;; TPU-edt rectangular mode. In rectangular mode, Remove and Insert work
136 ;; on rectangles. Likewise, Gold-* toggles TPU-edt regular expression
137 ;; mode. In regular expression mode Find, Find Next, and the line-mode
138 ;; replace command work with regular expressions. [A regular expression
139 ;; is a pattern that denotes a set of strings; like VMS wildcards.]
141 ;; Emacs also gives TPU-edt the undo and occur functions. Undo does
142 ;; what it says; it undoes the last change. Multiple undos in a row
143 ;; undo multiple changes. For your convenience, undo is available on
144 ;; Gold-u. Occur shows all the lines containing a specific string in
145 ;; another window. Moving to that window, and typing ^C^C (Control-C
146 ;; twice) on a particular line moves you back to the original window
147 ;; at that line. Occur is on Gold-o.
149 ;; Finally, as you edit, remember that all the power of emacs is at
150 ;; your disposal. It really is a fantastic tool. You may even want to
151 ;; take some time and read the emacs tutorial; perhaps not to learn the
152 ;; native emacs key bindings, but to get a feel for all the things
153 ;; emacs can do for you. The emacs tutorial is available from the
154 ;; emacs help function: "Gold-PF2 t"
157 ;; %% Starting TPU-edt
159 ;; All you have to do to start TPU-edt, is turn it on. This can be
160 ;; done from the command line when running emacs.
162 ;; prompt> emacs -f tpu-edt
164 ;; If you've already started emacs, turn on TPU-edt using the tpu-edt
165 ;; command. First press `M-x' (that's usually `ESC' followed by `x')
166 ;; and type `tpu-edt' followed by a carriage return.
168 ;; If you like TPU-edt and want to use it all the time, you can start
169 ;; TPU-edt using the emacs initialization file, .emacs. Simply create
170 ;; a .emacs file in your home directory containing the line:
174 ;; That's all you need to do to start TPU-edt.
177 ;; %% Customizing TPU-edt using the Emacs Initialization File
179 ;; The following is a sample emacs initialization file. It shows how to
180 ;; invoke TPU-edt, and how to customize it.
182 ;; ; .emacs - a sample emacs initialization file
187 ;; ; Set scroll margins 10% (top) and 15% (bottom).
188 ;; (tpu-set-scroll-margins "10%" "15%")
190 ;; ; Load the vtxxx terminal control functions.
191 ;; (load "vt-control" t)
193 ;; ; TPU-edt treats words like EDT; here's how to add word separators.
194 ;; ; Note that backslash (\) and double quote (") are quoted with '\'.
195 ;; (tpu-add-word-separators "]\\[-_,.\"=+()'/*#:!&;$")
197 ;; ; Emacs is happy to save files without a final newline; other Unix
198 ;; ; programs hate that! Here we make sure that files end with newlines.
199 ;; (setq require-final-newline t)
201 ;; ; Emacs uses Control-s and Control-q. Problems can occur when using
202 ;; ; emacs on terminals that use these codes for flow control (Xon/Xoff
203 ;; ; flow control). These lines disable emacs' use of these characters.
204 ;; (global-unset-key "\C-s")
205 ;; (global-unset-key "\C-q")
207 ;; ; The emacs universal-argument function is very useful.
208 ;; ; This line maps universal-argument to Gold-PF1.
209 ;; (define-key GOLD-SS3-map "P" 'universal-argument) ; Gold-PF1
211 ;; ; Make KP7 move by paragraphs, instead of pages.
212 ;; (define-key SS3-map "w" 'tpu-paragraph) ; KP7
214 ;; ; Repeat the preceding mappings for X-windows.
217 ;; (global-set-key [kp_7] 'tpu-paragraph) ; KP7
218 ;; (define-key GOLD-map [kp_f1] 'universal-argument))) ; GOLD-PF1
220 ;; ; Display the TPU-edt version.
224 ;; %% Regular Expressions in TPU-edt
226 ;; Gold-* toggles TPU-edt regular expression mode. In regular expression
227 ;; mode, find, find next, replace, and substitute accept emacs regular
228 ;; expressions. A complete list of emacs regular expressions can be found
229 ;; using the emacs "info" command (it's somewhat like the VMS help
230 ;; command). Try the following sequence of commands:
232 ;; DO info <enter info mode>
233 ;; m emacs <select the "emacs" topic>
234 ;; m regexs <select the "regular expression" topic>
236 ;; Type "q" to quit out of info mode.
238 ;; There is a problem in regular expression mode when searching for empty
239 ;; strings, like beginning-of-line (^) and end-of-line ($). When searching
240 ;; for these strings, find-next may find the current string, instead of the
241 ;; next one. This can cause global replace and substitute commands to loop
242 ;; forever in the same location. For this reason, commands like
244 ;; replace "^" "> " <add "> " to beginning of line>
245 ;; replace "$" "00711" <add "00711" to end of line>
247 ;; may not work properly.
249 ;; Commands like those above are very useful for adding text to the
250 ;; beginning or end of lines. They might work on a line-by-line basis, but
251 ;; go into an infinite loop if the "all" response is specified. If the
252 ;; goal is to add a string to the beginning or end of a particular set of
253 ;; lines TPU-edt provides functions to do this.
255 ;; Gold-^ Add a string at BOL in region or buffer
256 ;; Gold-$ Add a string at EOL in region or buffer
258 ;; There is also a TPU-edt interface to the native emacs string replacement
259 ;; commands. Gold-/ invokes this command. It accepts regular expressions
260 ;; if TPU-edt is in regular expression mode. Given a repeat count, it will
261 ;; perform the replacement without prompting for confirmation.
263 ;; This command replaces empty strings correctly, however, it has its
264 ;; drawbacks. As a native emacs command, it has a different interface
265 ;; than the emulated TPU commands. Also, it works only in the forward
266 ;; direction, regardless of the current TPU-edt direction.
270 ;; We shouldn't use vt100 ESC sequences since it is uselessly fighting
271 ;; against function-key-map. Better use real key names.
275 ;; we use picture-mode functions
279 "Emacs emulating TPU emulating EDT."
285 ;;; Version Information
287 (defconst tpu-version "4.5" "TPU-edt version number.")
291 ;;; User Configurable Variables
293 (defcustom tpu-have-ispell t
294 "*If non-nil (default), TPU-edt uses ispell for spell checking."
298 (defcustom tpu-kill-buffers-silently nil
299 "*If non-nil, TPU-edt kills modified buffers without asking."
303 (defcustom tpu-percent-scroll 75
304 "*Percentage of the screen to scroll for next/previous screen commands."
308 (defcustom tpu-pan-columns 16
309 "*Number of columns the tpu-pan functions scroll left or right."
315 ;;; Emacs version identifiers - currently referenced by
317 ;;; o tpu-mark o tpu-set-mark
318 ;;; o mode line section o tpu-load-xkeys
320 (defconst tpu-lucid-emacs-p
321 (string-match "Lucid" emacs-version)
322 "Non-nil if we are running Lucid Emacs.")
328 (let ((map (make-sparse-keymap)))
329 (define-key map "A" 'tpu-previous-line) ; up
330 (define-key map "B" 'tpu-next-line) ; down
331 (define-key map "D" 'tpu-backward-char) ; left
332 (define-key map "C" 'tpu-forward-char) ; right
334 (define-key map "1~" 'tpu-search) ; Find
335 (define-key map "2~" 'tpu-paste) ; Insert Here
336 (define-key map "3~" 'tpu-cut) ; Remove
337 (define-key map "4~" 'tpu-select) ; Select
338 (define-key map "5~" 'tpu-scroll-window-down) ; Prev Screen
339 (define-key map "6~" 'tpu-scroll-window-up) ; Next Screen
341 (define-key map "11~" 'nil) ; F1
342 (define-key map "12~" 'nil) ; F2
343 (define-key map "13~" 'nil) ; F3
344 (define-key map "14~" 'nil) ; F4
345 (define-key map "15~" 'nil) ; F5
346 (define-key map "17~" 'nil) ; F6
347 (define-key map "18~" 'nil) ; F7
348 (define-key map "19~" 'nil) ; F8
349 (define-key map "20~" 'nil) ; F9
350 (define-key map "21~" 'tpu-exit) ; F10
351 (define-key map "23~" 'tpu-insert-escape) ; F11 (ESC)
352 (define-key map "24~" 'tpu-next-beginning-of-line) ; F12 (BS)
353 (define-key map "25~" 'tpu-delete-previous-word) ; F13 (LF)
354 (define-key map "26~" 'tpu-toggle-overwrite-mode) ; F14
355 (define-key map "28~" 'tpu-help) ; HELP
356 (define-key map "29~" 'execute-extended-command) ; DO
357 (define-key map "31~" 'tpu-goto-breadcrumb) ; F17
358 (define-key map "32~" 'nil) ; F18
359 (define-key map "33~" 'nil) ; F19
360 (define-key map "34~" 'nil) ; F20
362 "Maps the CSI function keys on the VT100 keyboard.
363 CSI is DEC's name for the sequence <ESC>[.")
366 (let ((map (make-sparse-keymap)))
367 (define-key map "A" 'tpu-move-to-beginning) ; up-arrow
368 (define-key map "B" 'tpu-move-to-end) ; down-arrow
369 (define-key map "C" 'end-of-line) ; right-arrow
370 (define-key map "D" 'beginning-of-line) ; left-arrow
372 (define-key map "1~" 'nil) ; Find
373 (define-key map "2~" 'nil) ; Insert Here
374 (define-key map "3~" 'tpu-store-text) ; Remove
375 (define-key map "4~" 'tpu-unselect) ; Select
376 (define-key map "5~" 'tpu-previous-window) ; Prev Screen
377 (define-key map "6~" 'tpu-next-window) ; Next Screen
379 (define-key map "11~" 'nil) ; F1
380 (define-key map "12~" 'nil) ; F2
381 (define-key map "13~" 'nil) ; F3
382 (define-key map "14~" 'nil) ; F4
383 (define-key map "16~" 'nil) ; F5
384 (define-key map "17~" 'nil) ; F6
385 (define-key map "18~" 'nil) ; F7
386 (define-key map "19~" 'nil) ; F8
387 (define-key map "20~" 'nil) ; F9
388 (define-key map "21~" 'nil) ; F10
389 (define-key map "23~" 'nil) ; F11
390 (define-key map "24~" 'nil) ; F12
391 (define-key map "25~" 'nil) ; F13
392 (define-key map "26~" 'nil) ; F14
393 (define-key map "28~" 'describe-bindings) ; HELP
394 (define-key map "29~" 'nil) ; DO
395 (define-key map "31~" 'tpu-drop-breadcrumb) ; F17
396 (define-key map "32~" 'nil) ; F18
397 (define-key map "33~" 'nil) ; F19
398 (define-key map "34~" 'nil) ; F20
400 "Maps the function keys on the VT100 keyboard preceded by GOLD-CSI.")
403 (let ((map (make-sparse-keymap)))
404 (define-key map "A" 'tpu-move-to-beginning) ; up-arrow
405 (define-key map "B" 'tpu-move-to-end) ; down-arrow
406 (define-key map "C" 'end-of-line) ; right-arrow
407 (define-key map "D" 'beginning-of-line) ; left-arrow
409 (define-key map "P" 'keyboard-quit) ; PF1
410 (define-key map "Q" 'help-for-help) ; PF2
411 (define-key map "R" 'tpu-search) ; PF3
412 (define-key map "S" 'tpu-undelete-lines) ; PF4
413 (define-key map "p" 'open-line) ; KP0
414 (define-key map "q" 'tpu-change-case) ; KP1
415 (define-key map "r" 'tpu-delete-to-eol) ; KP2
416 (define-key map "s" 'tpu-special-insert) ; KP3
417 (define-key map "t" 'tpu-move-to-end) ; KP4
418 (define-key map "u" 'tpu-move-to-beginning) ; KP5
419 (define-key map "v" 'tpu-paste) ; KP6
420 (define-key map "w" 'execute-extended-command) ; KP7
421 (define-key map "x" 'tpu-fill) ; KP8
422 (define-key map "y" 'tpu-replace) ; KP9
423 (define-key map "m" 'tpu-undelete-words) ; KP-
424 (define-key map "l" 'tpu-undelete-char) ; KP,
425 (define-key map "n" 'tpu-unselect) ; KP.
426 (define-key map "M" 'tpu-substitute) ; KPenter
428 "Maps the function keys on the VT100 keyboard preceded by GOLD-SS3.")
431 (let ((map (make-keymap)))
432 (define-key map "\e[" GOLD-CSI-map) ; GOLD-CSI map
433 (define-key map "\eO" GOLD-SS3-map) ; GOLD-SS3 map
435 (define-key map "\C-A" 'tpu-toggle-overwrite-mode) ; ^A
436 (define-key map "\C-B" 'nil) ; ^B
437 (define-key map "\C-C" 'nil) ; ^C
438 (define-key map "\C-D" 'nil) ; ^D
439 (define-key map "\C-E" 'nil) ; ^E
440 (define-key map "\C-F" 'set-visited-file-name) ; ^F
441 (define-key map "\C-g" 'keyboard-quit) ; safety first
442 (define-key map "\C-h" 'delete-other-windows) ; BS
443 (define-key map "\C-i" 'other-window) ; TAB
444 (define-key map "\C-J" 'nil) ; ^J
445 (define-key map "\C-K" 'tpu-define-macro-key) ; ^K
446 (define-key map "\C-l" 'downcase-region) ; ^L
447 (define-key map "\C-M" 'nil) ; ^M
448 (define-key map "\C-N" 'nil) ; ^N
449 (define-key map "\C-O" 'nil) ; ^O
450 (define-key map "\C-P" 'nil) ; ^P
451 (define-key map "\C-Q" 'nil) ; ^Q
452 (define-key map "\C-R" 'nil) ; ^R
453 (define-key map "\C-S" 'nil) ; ^S
454 (define-key map "\C-T" 'tpu-toggle-control-keys) ; ^T
455 (define-key map "\C-u" 'upcase-region) ; ^U
456 (define-key map "\C-V" 'nil) ; ^V
457 (define-key map "\C-w" 'tpu-write-current-buffers) ; ^W
458 (define-key map "\C-X" 'nil) ; ^X
459 (define-key map "\C-Y" 'nil) ; ^Y
460 (define-key map "\C-Z" 'nil) ; ^Z
461 (define-key map " " 'undo) ; SPC
462 (define-key map "!" 'nil) ; !
463 (define-key map "#" 'nil) ; #
464 (define-key map "$" 'tpu-add-at-eol) ; $
465 (define-key map "%" 'tpu-goto-percent) ; %
466 (define-key map "&" 'nil) ; &
467 (define-key map "(" 'nil) ; (
468 (define-key map ")" 'nil) ; )
469 (define-key map "*" 'tpu-toggle-regexp) ; *
470 (define-key map "+" 'nil) ; +
471 (define-key map "," 'tpu-goto-breadcrumb) ; ,
472 (define-key map "-" 'negative-argument) ; -
473 (define-key map "." 'tpu-drop-breadcrumb) ; .
474 (define-key map "/" 'tpu-emacs-replace) ; /
475 (define-key map "0" 'digit-argument) ; 0
476 (define-key map "1" 'digit-argument) ; 1
477 (define-key map "2" 'digit-argument) ; 2
478 (define-key map "3" 'digit-argument) ; 3
479 (define-key map "4" 'digit-argument) ; 4
480 (define-key map "5" 'digit-argument) ; 5
481 (define-key map "6" 'digit-argument) ; 6
482 (define-key map "7" 'digit-argument) ; 7
483 (define-key map "8" 'digit-argument) ; 8
484 (define-key map "9" 'digit-argument) ; 9
485 (define-key map ":" 'nil) ; :
486 (define-key map ";" 'tpu-trim-line-ends) ; ;
487 (define-key map "<" 'nil) ; <
488 (define-key map "=" 'nil) ; =
489 (define-key map ">" 'nil) ; >
490 (define-key map "?" 'tpu-spell-check) ; ?
491 (define-key map "A" 'tpu-toggle-newline-and-indent) ; A
492 (define-key map "B" 'tpu-next-buffer) ; B
493 (define-key map "C" 'repeat-complex-command) ; C
494 (define-key map "D" 'shell-command) ; D
495 (define-key map "E" 'tpu-exit) ; E
496 (define-key map "F" 'tpu-set-cursor-free) ; F
497 (define-key map "G" 'tpu-get) ; G
498 (define-key map "H" 'nil) ; H
499 (define-key map "I" 'tpu-include) ; I
500 (define-key map "K" 'tpu-kill-buffer) ; K
501 (define-key map "L" 'tpu-what-line) ; L
502 (define-key map "M" 'buffer-menu) ; M
503 (define-key map "N" 'tpu-next-file-buffer) ; N
504 (define-key map "O" 'occur) ; O
505 (define-key map "P" 'lpr-buffer) ; P
506 (define-key map "Q" 'tpu-quit) ; Q
507 (define-key map "R" 'tpu-toggle-rectangle) ; R
508 (define-key map "S" 'replace) ; S
509 (define-key map "T" 'tpu-line-to-top-of-window) ; T
510 (define-key map "U" 'undo) ; U
511 (define-key map "V" 'tpu-version) ; V
512 (define-key map "W" 'save-buffer) ; W
513 (define-key map "X" 'tpu-save-all-buffers-kill-emacs) ; X
514 (define-key map "Y" 'copy-region-as-kill) ; Y
515 (define-key map "Z" 'suspend-emacs) ; Z
516 (define-key map "[" 'blink-matching-open) ; [
517 (define-key map "\\" 'nil) ; \
518 (define-key map "]" 'blink-matching-open) ; ]
519 (define-key map "^" 'tpu-add-at-bol) ; ^
520 (define-key map "_" 'split-window-vertically) ; -
521 (define-key map "`" 'what-line) ; `
522 (define-key map "a" 'tpu-toggle-newline-and-indent) ; a
523 (define-key map "b" 'tpu-next-buffer) ; b
524 (define-key map "c" 'repeat-complex-command) ; c
525 (define-key map "d" 'shell-command) ; d
526 (define-key map "e" 'tpu-exit) ; e
527 (define-key map "f" 'tpu-set-cursor-free) ; f
528 (define-key map "g" 'tpu-get) ; g
529 (define-key map "h" 'nil) ; h
530 (define-key map "i" 'tpu-include) ; i
531 (define-key map "k" 'tpu-kill-buffer) ; k
532 (define-key map "l" 'goto-line) ; l
533 (define-key map "m" 'buffer-menu) ; m
534 (define-key map "n" 'tpu-next-file-buffer) ; n
535 (define-key map "o" 'occur) ; o
536 (define-key map "p" 'lpr-region) ; p
537 (define-key map "q" 'tpu-quit) ; q
538 (define-key map "r" 'tpu-toggle-rectangle) ; r
539 (define-key map "s" 'replace) ; s
540 (define-key map "t" 'tpu-line-to-top-of-window) ; t
541 (define-key map "u" 'undo) ; u
542 (define-key map "v" 'tpu-version) ; v
543 (define-key map "w" 'save-buffer) ; w
544 (define-key map "x" 'tpu-save-all-buffers-kill-emacs) ; x
545 (define-key map "y" 'copy-region-as-kill) ; y
546 (define-key map "z" 'suspend-emacs) ; z
547 (define-key map "{" 'nil) ; {
548 (define-key map "|" 'split-window-horizontally) ; |
549 (define-key map "}" 'nil) ; }
550 (define-key map "~" 'exchange-point-and-mark) ; ~
551 (define-key map "\177" 'delete-window) ; <X]
553 "Maps the function keys on the VT100 keyboard preceded by PF1.
554 GOLD is the ASCII 7-bit escape sequence <ESC>OP.")
557 (let ((map (make-sparse-keymap)))
558 (define-key map "P" GOLD-map) ; GOLD map
560 (define-key map "A" 'tpu-previous-line) ; up
561 (define-key map "B" 'tpu-next-line) ; down
562 (define-key map "C" 'tpu-forward-char) ; right
563 (define-key map "D" 'tpu-backward-char) ; left
565 (define-key map "Q" 'tpu-help) ; PF2
566 (define-key map "R" 'tpu-search-again) ; PF3
567 (define-key map "S" 'tpu-delete-current-line) ; PF4
568 (define-key map "p" 'tpu-line) ; KP0
569 (define-key map "q" 'tpu-word) ; KP1
570 (define-key map "r" 'tpu-end-of-line) ; KP2
571 (define-key map "s" 'tpu-char) ; KP3
572 (define-key map "t" 'tpu-advance-direction) ; KP4
573 (define-key map "u" 'tpu-backup-direction) ; KP5
574 (define-key map "v" 'tpu-cut) ; KP6
575 (define-key map "w" 'tpu-page) ; KP7
576 (define-key map "x" 'tpu-scroll-window) ; KP8
577 (define-key map "y" 'tpu-append-region) ; KP9
578 (define-key map "m" 'tpu-delete-current-word) ; KP-
579 (define-key map "l" 'tpu-delete-current-char) ; KP,
580 (define-key map "n" 'tpu-select) ; KP.
581 (define-key map "M" 'newline) ; KPenter
583 "Maps the SS3 function keys on the VT100 keyboard.
584 SS3 is DEC's name for the sequence <ESC>O.")
586 (defvar tpu-global-map nil "TPU-edt global keymap.")
587 (defvar tpu-original-global-map global-map
588 "Original non-TPU global keymap.")
590 (and (not (boundp 'minibuffer-local-ns-map))
591 (defvar minibuffer-local-ns-map (make-sparse-keymap)
592 "Hack to give Lucid Emacs the same maps as ordinary Emacs."))
598 (defvar tpu-last-replaced-text ""
599 "Last text deleted by a TPU-edt replace command.")
600 (defvar tpu-last-deleted-region ""
601 "Last text deleted by a TPU-edt remove command.")
602 (defvar tpu-last-deleted-lines ""
603 "Last text deleted by a TPU-edt line-delete command.")
604 (defvar tpu-last-deleted-words ""
605 "Last text deleted by a TPU-edt word-delete command.")
606 (defvar tpu-last-deleted-char ""
607 "Last character deleted by a TPU-edt character-delete command.")
609 (defvar tpu-searching-forward t
610 "If non-nil, TPU-edt is searching in the forward direction.")
611 (defvar tpu-search-last-string ""
612 "Last text searched for by the TPU-edt search commands.")
613 (defvar tpu-search-overlay (make-overlay 1 1)
614 "Search highlight overlay.")
615 (overlay-put tpu-search-overlay 'face 'bold)
617 (defvar tpu-replace-overlay (make-overlay 1 1)
618 "Replace highlight overlay.")
619 (overlay-put tpu-replace-overlay 'face 'highlight)
621 (defvar tpu-regexp-p nil
622 "If non-nil, TPU-edt uses regexp search and replace routines.")
623 (defvar tpu-rectangular-p nil
624 "If non-nil, TPU-edt removes and inserts rectangles.")
625 (defvar tpu-advance t
626 "True when TPU-edt is operating in the forward direction.")
627 (defvar tpu-reverse nil
628 "True when TPU-edt is operating in the backward direction.")
629 (defvar tpu-control-keys nil
630 "If non-nil, control keys are set to perform TPU functions.")
631 (defvar tpu-xkeys-file nil
632 "File containing TPU-edt X key map.")
634 (defvar tpu-rectangle-string nil
635 "Mode line string to identify rectangular mode.")
636 (defvar tpu-direction-string nil
637 "Mode line string to identify current direction.")
639 (defvar tpu-add-at-bol-hist nil
640 "History variable for tpu-edt-add-at-bol function.")
641 (defvar tpu-add-at-eol-hist nil
642 "History variable for tpu-edt-add-at-eol function.")
643 (defvar tpu-regexp-prompt-hist nil
644 "History variable for search and replace functions.")
648 ;;; Buffer Local Variables
650 (defvar tpu-newline-and-indent-p nil
651 "If non-nil, Return produces a newline and indents.")
652 (make-variable-buffer-local 'tpu-newline-and-indent-p)
654 (defvar tpu-newline-and-indent-string nil
655 "Mode line string to identify AutoIndent mode.")
656 (make-variable-buffer-local 'tpu-newline-and-indent-string)
658 (defvar tpu-saved-delete-func nil
659 "Saved value of the delete key.")
660 (make-variable-buffer-local 'tpu-saved-delete-func)
662 (defvar tpu-buffer-local-map nil
663 "TPU-edt buffer local key map.")
664 (make-variable-buffer-local 'tpu-buffer-local-map)
668 ;;; Mode Line - Modify the mode line to show the following
671 ;;; o Direction of motion.
672 ;;; o Active rectangle mode.
673 ;;; o Active auto indent mode.
675 (defvar tpu-original-mm-alist minor-mode-alist)
677 (defvar tpu-mark-flag "")
678 (make-variable-buffer-local 'tpu-mark-flag)
680 (defun tpu-set-mode-line (for-tpu)
681 "Set ``minor-mode-alist'' for TPU-edt, or reset it to default Emacs."
682 (let ((entries '((tpu-newline-and-indent-p tpu-newline-and-indent-string)
683 (tpu-rectangular-p tpu-rectangle-string)
684 (tpu-direction-string tpu-direction-string)
685 (tpu-mark-flag tpu-mark-flag))))
686 (dolist (entry entries)
688 (add-to-list 'minor-mode-alist entry)
689 (setq minor-mode-alist (remove entry minor-mode-alist))))))
691 (defun tpu-update-mode-line nil
692 "Make sure mode-line in the current buffer reflects all changes."
693 (setq tpu-mark-flag (if transient-mark-mode "" (if (tpu-mark) " @" " ")))
694 (force-mode-line-update))
696 (cond (tpu-lucid-emacs-p
697 (add-hook 'zmacs-deactivate-region-hook 'tpu-update-mode-line)
698 (add-hook 'zmacs-activate-region-hook 'tpu-update-mode-line))
700 (add-hook 'activate-mark-hook 'tpu-update-mode-line)
701 (add-hook 'deactivate-mark-hook 'tpu-update-mode-line)))
709 ;;; Used in: Replace, Substitute, Store-Text, Cut/Remove,
710 ;;; Append, and Change-Case
712 (defvar tpu-match-beginning-mark (make-marker))
713 (defvar tpu-match-end-mark (make-marker))
715 (defun tpu-set-match nil
716 "Set markers at match beginning and end."
717 ;; Add one to beginning mark so it stays with the first character of
718 ;; the string even if characters are added just before the string.
719 (setq tpu-match-beginning-mark (copy-marker (match-beginning 0) t))
720 (setq tpu-match-end-mark (copy-marker (match-end 0))))
722 (defun tpu-unset-match nil
723 "Unset match beginning and end markers."
724 (set-marker tpu-match-beginning-mark nil)
725 (set-marker tpu-match-end-mark nil))
727 (defun tpu-match-beginning nil
728 "Returns the location of the last match beginning."
729 (marker-position tpu-match-beginning-mark))
731 (defun tpu-match-end nil
732 "Returns the location of the last match end."
733 (marker-position tpu-match-end-mark))
735 (defun tpu-check-match nil
736 "Returns t if point is between tpu-match markers.
737 Otherwise sets the tpu-match markers to nil and returns nil."
738 ;; make sure 1- marker is in this buffer
739 ;; 2- point is at or after beginning marker
740 ;; 3- point is before ending marker, or in the case of
741 ;; zero length regions (like bol, or eol) that the
742 ;; beginning, end, and point are equal.
744 (equal (marker-buffer tpu-match-beginning-mark) (current-buffer))
745 (>= (point) (marker-position tpu-match-beginning-mark))
747 (< (point) (marker-position tpu-match-end-mark))
748 (and (= (marker-position tpu-match-beginning-mark)
749 (marker-position tpu-match-end-mark))
750 (= (marker-position tpu-match-end-mark) (point))))) t)
752 (tpu-unset-match) nil)))
754 (defun tpu-show-match-markers nil
755 "Show the values of the match markers."
757 (if (markerp tpu-match-beginning-mark)
758 (message "(%s, %s) in %s -- current %s in %s"
759 (marker-position tpu-match-beginning-mark)
760 (marker-position tpu-match-end-mark)
761 (marker-buffer tpu-match-end-mark)
762 (point) (current-buffer))))
768 (defun tpu-caar (thingy) (car (car thingy)))
769 (defun tpu-cadr (thingy) (car (cdr thingy)))
771 (defvar zmacs-regions)
774 "TPU-edt version of the mark function.
775 Return the appropriate value of the mark for the current
777 (cond (tpu-lucid-emacs-p (mark (not zmacs-regions)))
778 (t (and mark-active (mark (not transient-mark-mode))))))
780 (defun tpu-set-mark (pos)
781 "TPU-edt version of the `set-mark' function.
782 Sets the mark at POS and activates the region according to the
783 current version of Emacs."
785 ;; We use a separate `if' for the fboundp so the byte-compiler notices it
786 ;; and doesn't complain about the subsequent call.
787 (if (fboundp 'zmacs-activate-region) (if pos (zmacs-activate-region))))
789 (defun tpu-string-prompt (prompt history-symbol)
790 "Read a string with PROMPT."
791 (read-from-minibuffer prompt nil nil nil history-symbol))
793 (defvar tpu-last-answer nil "Most recent response to tpu-y-or-n-p.")
795 (defun tpu-y-or-n-p (prompt &optional not-yes)
796 "Prompt for a y or n answer with positive default.
797 Optional second argument NOT-YES changes default to negative.
798 Like Emacs `y-or-n-p', but also accepts space as y and DEL as n."
799 (message "%s[%s]" prompt (if not-yes "n" "y"))
803 (let ((ans (read-char)))
804 (cond ((or (= ans ?y) (= ans ?Y) (= ans ?\ ))
805 (setq tpu-last-answer t))
806 ((or (= ans ?n) (= ans ?N) (= ans ?\C-?))
807 (setq tpu-last-answer nil))
808 ((= ans ?\r) (setq tpu-last-answer (not not-yes)))
811 (message "Please answer y or n. %s[%s]"
812 prompt (if not-yes "n" "y")))))))
815 (defun tpu-local-set-key (key func)
816 "Replace a key in the TPU-edt local key map.
817 Create the key map if necessary."
818 (cond ((not (keymapp tpu-buffer-local-map))
819 (setq tpu-buffer-local-map (if (current-local-map)
820 (copy-keymap (current-local-map))
821 (make-sparse-keymap)))
822 (use-local-map tpu-buffer-local-map)))
823 (local-set-key key func))
825 (defun tpu-current-line nil
826 "Return the vertical position of point in the selected window.
827 Top line is 0. Counts each text line only once, even if it wraps."
828 (+ (count-lines (window-start) (point)) (if (= (current-column) 0) 1 0) -1))
834 (defvar tpu-breadcrumb-plist nil
835 "The set of user-defined markers (breadcrumbs), as a plist.")
837 (defun tpu-drop-breadcrumb (num)
838 "Drops a breadcrumb that can be returned to later with goto-breadcrumb."
840 (put tpu-breadcrumb-plist num (list (current-buffer) (point)))
841 (message "Mark %d set." num))
843 (defun tpu-goto-breadcrumb (num)
844 "Returns to a breadcrumb set with drop-breadcrumb."
846 (cond ((get tpu-breadcrumb-plist num)
847 (switch-to-buffer (car (get tpu-breadcrumb-plist num)))
848 (goto-char (tpu-cadr (get tpu-breadcrumb-plist num)))
849 (message "mark %d found." num))
851 (message "mark %d not found." num))))
857 (defun tpu-change-case (num)
858 "Change the case of the character under the cursor or region.
859 Accepts a prefix argument of the number of characters to invert."
862 (let ((beg (region-beginning)) (end (region-end)))
864 (funcall (if (= (downcase (char-after beg)) (char-after beg))
865 'upcase-region 'downcase-region)
870 (let ((beg (tpu-match-beginning)) (end (tpu-match-end)))
872 (funcall (if (= (downcase (char-after beg)) (char-after beg))
873 'upcase-region 'downcase-region)
879 (funcall (if (= (downcase (following-char)) (following-char))
880 'upcase-region 'downcase-region)
881 (point) (1+ (point)))
882 (forward-char (if tpu-reverse -1 1))
883 (setq num (1- num))))))
885 (defun tpu-fill (num)
886 "Fill paragraph or marked region.
887 With argument, fill and justify."
890 (fill-region (point) (tpu-mark) num)
893 (fill-paragraph num))))
895 (defun tpu-version nil
896 "Print the TPU-edt version number."
899 "TPU-edt version %s by Rob Riepel (riepel@networking.stanford.edu)"
902 (defun tpu-reset-screen-size (height width)
903 "Sets the screen size."
904 (interactive "nnew screen height: \nnnew screen width: ")
905 (set-frame-height (selected-frame) height)
906 (set-frame-width (selected-frame) width))
908 (defun tpu-toggle-newline-and-indent nil
909 "Toggle between 'newline and indent' and 'simple newline'."
911 (cond (tpu-newline-and-indent-p
912 (setq tpu-newline-and-indent-string "")
913 (setq tpu-newline-and-indent-p nil)
914 (tpu-local-set-key "\C-m" 'newline))
916 (setq tpu-newline-and-indent-string " AutoIndent")
917 (setq tpu-newline-and-indent-p t)
918 (tpu-local-set-key "\C-m" 'newline-and-indent)))
919 (tpu-update-mode-line)
921 (message "Carriage return inserts a newline%s"
922 (if tpu-newline-and-indent-p " and indents." "."))))
924 (defun tpu-spell-check nil
925 "Checks the spelling of the region, or of the entire buffer if no
928 (cond (tpu-have-ispell
929 (if (tpu-mark) (ispell-region (tpu-mark) (point)) (ispell-buffer)))
931 (if (tpu-mark) (spell-region (tpu-mark) (point)) (spell-buffer))))
932 (if (tpu-mark) (tpu-unselect t)))
934 (defun tpu-toggle-overwrite-mode nil
935 "Switches in and out of overwrite mode"
937 (cond (overwrite-mode
938 (tpu-local-set-key "\177" tpu-saved-delete-func)
941 (setq tpu-saved-delete-func (local-key-binding "\177"))
942 (tpu-local-set-key "\177" 'picture-backward-clear-column)
943 (overwrite-mode 1))))
945 (defun tpu-special-insert (num)
946 "Insert a character or control code according to
947 its ASCII decimal value."
949 (if overwrite-mode (delete-char 1))
950 (insert (if num num 0)))
952 (defun tpu-quoted-insert (num)
953 "Read next input character and insert it.
954 This is useful for inserting control characters."
956 (let ((char (read-char)) )
957 (if overwrite-mode (delete-char num))
958 (insert-char char num)))
962 ;;; TPU line-mode commands
964 (defun tpu-include (file)
965 "TPU-like include file"
966 (interactive "fInclude file: ")
967 (insert-file-contents file)
970 (defun tpu-get (file)
972 (interactive "FFile to get: ")
973 (find-file file find-file-wildcards))
975 (defun tpu-what-line nil
976 "Tells what line the point is on,
977 and the total number of lines in the buffer."
980 (message "You are at the End of Buffer. The last line is %d."
981 (count-lines 1 (point-max)))
982 (let* ((cur (count-lines 1 (1+ (point))))
983 (max (count-lines 1 (point-max)))
984 (pct (/ (* 100 (+ cur (/ max 200))) max)))
985 (message "You are on line %d out of %d (%d%%)." cur max pct))))
988 "Exit the way TPU does, save current buffer and ask about others."
990 (if (not (eq (recursion-depth) 0))
991 (exit-recursive-edit)
992 (progn (save-buffer) (save-buffers-kill-emacs))))
995 "Quit the way TPU does, ask to make sure changes should be abandoned."
997 (let ((list (buffer-list))
999 (while (and list working)
1000 (let ((buffer (car list)))
1001 (if (and (buffer-file-name buffer) (buffer-modified-p buffer))
1003 "Modifications will not be saved, continue quitting? ")
1004 (kill-emacs t) (setq working nil)))
1005 (setq list (cdr list))))
1006 (if working (kill-emacs t))))
1010 ;;; Command and Function Aliases
1013 (define-minor-mode tpu-edt-mode
1014 "TPU/edt emulation."
1016 (if tpu-edt-mode (tpu-edt-on) (tpu-edt-off)))
1018 (defalias 'TPU-EDT-MODE 'tpu-edt-mode)
1021 (defalias 'tpu-edt 'tpu-edt-on)
1022 (defalias 'TPU-EDT 'tpu-edt-on)
1024 ;; Note: The following functions have no `tpu-' prefix. This is unavoidable.
1025 ;; The real TPU/edt editor has interactive commands with these names,
1026 ;; so tpu-edt.el users expect things like M-x exit RET and M-x help RET
1027 ;; to work. Therefore it really is necessary to define these functions,
1028 ;; even in cases where they redefine existing Emacs functions.
1030 (defalias 'exit 'tpu-exit)
1031 (defalias 'EXIT 'tpu-exit)
1033 (defalias 'Get 'tpu-get)
1034 (defalias 'GET 'tpu-get)
1036 (defalias 'include 'tpu-include)
1037 (defalias 'INCLUDE 'tpu-include)
1039 (defalias 'quit 'tpu-quit)
1040 (defalias 'QUIT 'tpu-quit)
1042 (defalias 'spell 'tpu-spell-check)
1043 (defalias 'SPELL 'tpu-spell-check)
1045 (defalias 'what\ line 'tpu-what-line)
1046 (defalias 'WHAT\ LINE 'tpu-what-line)
1048 (defalias 'replace 'tpu-lm-replace)
1049 (defalias 'REPLACE 'tpu-lm-replace)
1051 (defalias 'help 'tpu-help)
1052 (defalias 'HELP 'tpu-help)
1054 (defalias 'set\ cursor\ free 'tpu-set-cursor-free)
1055 (defalias 'SET\ CURSOR\ FREE 'tpu-set-cursor-free)
1057 (defalias 'set\ cursor\ bound 'tpu-set-cursor-bound)
1058 (defalias 'SET\ CURSOR\ BOUND 'tpu-set-cursor-bound)
1060 (defalias 'set\ scroll\ margins 'tpu-set-scroll-margins)
1061 (defalias 'SET\ SCROLL\ MARGINS 'tpu-set-scroll-margins)
1063 ;; Real TPU error messages end in periods.
1064 ;; Define this to avoid openly flouting Emacs coding standards.
1065 (defalias 'tpu-error 'error)
1068 ;; Around emacs version 18.57, function line-move was renamed to
1069 ;; next-line-internal. If we're running under an older emacs,
1070 ;; make next-line-internal equivalent to line-move.
1072 (if (not (fboundp 'next-line-internal)) (fset 'next-line-internal 'line-move))
1078 (defvar tpu-help-keypad-map "\f
1079 _______________________ _______________________________
1080 | HELP | Do | | | | | |
1081 |KeyDefs| | | | | | |
1082 |_______|_______________| |_______|_______|_______|_______|
1083 _______________________ _______________________________
1084 | Find |Insert |Remove | | Gold | HELP |FndNxt | Del L |
1085 | | |Sto Tex| | key |E-Help | Find |Undel L|
1086 |_______|_______|_______| |_______|_______|_______|_______|
1087 |Select |Pre Scr|Nex Scr| | Page | Sect |Append | Del W |
1088 | Reset |Pre Win|Nex Win| | Do | Fill |Replace|Undel W|
1089 |_______|_______|_______| |_______|_______|_______|_______|
1090 |Move up| |Forward|Reverse|Remove | Del C |
1091 | Top | |Bottom | Top |Insert |Undel C|
1092 _______|_______|_______ |_______|_______|_______|_______|
1093 |Mov Lef|Mov Dow|Mov Rig| | Word | EOL | Char | |
1094 |StaOfLi|Bottom |EndOfLi| |ChngCas|Del EOL|SpecIns| Enter |
1095 |_______|_______|_______| |_______|_______|_______| |
1096 | Line |Select | Subs |
1097 | Open Line | Reset | |
1098 |_______________|_______|_______|
1101 (defvar tpu-help-text "
1102 \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\f
1106 ^A toggle insert and overwrite
1110 ^G Cancel current operation
1111 ^H beginning of line
1112 ^J delete previous word
1115 ^L insert page break
1116 ^R remember (during learn), re-center
1118 ^U delete to beginning of line
1123 ^X^X exchange point and mark - useful for checking region boundaries
1125 \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\f
1126 Gold-<key> Functions
1128 B Next Buffer - display the next buffer (all buffers)
1129 C Recall - edit and possibly repeat previous commands
1130 E Exit - save current buffer and ask about others
1131 G Get - load a file into a new edit buffer
1133 I Include - include a file in this buffer
1134 K Kill Buffer - abandon edits and delete buffer
1135 M Buffer Menu - display a list of all buffers
1136 N Next File Buffer - display next buffer containing a file
1138 O Occur - show following lines containing REGEXP
1139 Q Quit - exit without saving anything
1140 R Toggle rectangular mode for remove and insert
1141 S Search and substitute - line mode REPLACE command
1143 ^T Toggle control key bindings between TPU and emacs
1144 U Undo - undo the last edit
1145 W Write - save current buffer
1146 X Exit - save all modified buffers and exit
1148 \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\f
1150 More extensive documentation on TPU-edt can be found in the `Commentary'
1151 section of tpu-edt.el. This section can be accessed through the standard
1152 Emacs help facility using the `p' option. Once you exit TPU-edt Help, one
1153 of the following key sequences is sure to get you there.
1155 ^h p if you're not yet using TPU-edt
1156 Gold-PF2 p if you're using TPU-edt
1158 Alternatively, fire up Emacs help from the command prompt, with
1160 M-x help-for-help <CR> p <CR>
1162 Where `M-x' might be any of `Gold-KP7', 'Do', or 'ESC-x'.
1164 When you successfully invoke this part of the Emacs help facility, you
1165 will see a buffer named `*Finder*' listing a number of topics. Look for
1166 tpu-edt under `emulations'.
1168 \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\f
1170 *** No more help, use P to view previous screen")
1172 (defvar tpu-help-enter (format "%s" "\eOM")) ; tpu-help enter key symbol
1173 (defvar tpu-help-return (format "%s" "\r")) ; tpu-help enter key symbol
1174 (defvar tpu-help-N "N") ; tpu-help "N" symbol
1175 (defvar tpu-help-n "n") ; tpu-help "n" symbol
1176 (defvar tpu-help-P "P") ; tpu-help "P" symbol
1177 (defvar tpu-help-p "p") ; tpu-help "p" symbol
1180 "Display TPU-edt help."
1182 ;; Save current window configuration
1183 (save-window-excursion
1184 ;; Create and fill help buffer if necessary
1185 (if (not (get-buffer "*TPU-edt Help*"))
1186 (progn (generate-new-buffer "*TPU-edt Help*")
1187 (switch-to-buffer "*TPU-edt Help*")
1188 (insert tpu-help-keypad-map)
1189 (insert tpu-help-text)
1190 (setq buffer-read-only t)))
1192 ;; Display the help buffer
1193 (switch-to-buffer "*TPU-edt Help*")
1194 (delete-other-windows)
1195 (tpu-move-to-beginning)
1197 (tpu-line-to-top-of-window)
1199 ;; Prompt for keys to describe, based on screen state (split/not split)
1200 (let ((key nil) (fkey nil) (split nil))
1201 (while (not (equal tpu-help-return fkey))
1205 "Press the key you want help on (RET=exit, ENTER=redisplay, N=next, P=prev): "))
1208 "Press the key you want help on (RET to exit, N next screen, P prev screen): ")))
1210 ;; Process the read key
1212 ;; ENTER - Display just the help window
1213 ;; N or n - Next help or describe-key screen
1214 ;; P or p - Previous help or describe-key screen
1215 ;; RETURN - Exit from TPU-help
1216 ;; default - describe the key
1218 (setq fkey (format "%s" key))
1219 (cond ((equal tpu-help-enter fkey)
1221 (delete-other-windows))
1222 ((or (equal tpu-help-N fkey) (equal tpu-help-n fkey))
1225 (scroll-other-window 8)
1230 (tpu-line-to-top-of-window))))
1231 ((or (equal tpu-help-P fkey) (equal tpu-help-p fkey))
1234 (scroll-other-window -8)
1240 (tpu-line-to-top-of-window))))
1241 ((not (equal tpu-help-return fkey))
1244 ;; If the key is undefined, leave the
1245 ;; message in the mini-buffer for 3 seconds
1246 (if (not (key-binding key)) (sit-for 3))))))))
1252 (defun tpu-insert-escape nil
1253 "Inserts an escape character, and so becomes the escape-key alias."
1257 (defun tpu-insert-formfeed nil
1258 "Inserts a formfeed character."
1266 (defvar tpu-saved-control-r nil "Saved value of Control-r.")
1268 (defun tpu-end-define-macro-key (key)
1269 "Ends the current macro definition"
1270 (interactive "kPress the key you want to use to do what was just learned: ")
1272 (global-set-key key last-kbd-macro)
1273 (global-set-key "\C-r" tpu-saved-control-r))
1275 (defun tpu-define-macro-key nil
1276 "Bind a set of keystrokes to a single key, or key combination."
1278 (setq tpu-saved-control-r (global-key-binding "\C-r"))
1279 (global-set-key "\C-r" 'tpu-end-define-macro-key)
1280 (start-kbd-macro nil))
1284 ;;; Buffers and Windows
1286 (defun tpu-kill-buffer nil
1287 "Kills the current buffer. If tpu-kill-buffers-silently is non-nil,
1288 kills modified buffers without asking."
1290 (if tpu-kill-buffers-silently (set-buffer-modified-p nil))
1291 (kill-buffer (current-buffer)))
1293 (defun tpu-save-all-buffers-kill-emacs nil
1294 "Save all buffers and exit emacs."
1296 (let ((delete-old-versions t))
1297 (save-buffers-kill-emacs t)))
1299 (defun tpu-write-current-buffers nil
1300 "Save all modified buffers without exiting."
1302 (save-some-buffers t))
1304 (defun tpu-next-buffer nil
1305 "Go to next buffer in ring."
1307 (switch-to-buffer (car (reverse (buffer-list)))))
1309 (defun tpu-next-file-buffer nil
1310 "Go to next buffer in ring that is visiting a file or directory."
1312 (let ((list (tpu-make-file-buffer-list (buffer-list))))
1313 (setq list (delq (current-buffer) list))
1314 (if (not list) (tpu-error "No other buffers."))
1315 (switch-to-buffer (car (reverse list)))))
1317 (defun tpu-make-file-buffer-list (buffer-list)
1318 "Returns names from BUFFER-LIST excluding those beginning with a space or star."
1319 (delq nil (mapcar '(lambda (b)
1320 (if (or (= (aref (buffer-name b) 0) ? )
1321 (= (aref (buffer-name b) 0) ?*)) nil b))
1324 (defun tpu-next-window nil
1325 "Move to the next window."
1327 (if (one-window-p) (message "There is only one window on screen.")
1330 (defun tpu-previous-window nil
1331 "Move to the previous window."
1333 (if (one-window-p) (message "There is only one window on screen.")
1334 (select-window (previous-window))))
1340 (defun tpu-toggle-regexp nil
1341 "Switches in and out of regular expression search and replace mode."
1343 (setq tpu-regexp-p (not tpu-regexp-p))
1345 (and (interactive-p)
1346 (message "Regular expression search and substitute %sabled."
1347 (if tpu-regexp-p "en" "dis"))))
1349 (defun tpu-regexp-prompt (prompt)
1350 "Read a string, adding 'RE' to the prompt if tpu-regexp-p is set."
1351 (let ((re-prompt (concat (if tpu-regexp-p "RE ") prompt)))
1352 (read-from-minibuffer re-prompt nil nil nil 'tpu-regexp-prompt-hist)))
1354 (defun tpu-search-highlight nil
1355 (if (tpu-check-match)
1356 (move-overlay tpu-search-overlay
1357 (tpu-match-beginning) (tpu-match-end) (current-buffer))
1358 (unless (equal (overlay-start tpu-search-overlay)
1359 (overlay-end tpu-search-overlay))
1360 (move-overlay tpu-search-overlay 1 1 (current-buffer)))))
1362 (defun tpu-search nil
1363 "Search for a string or regular expression.
1364 The search is performed in the current direction."
1367 (tpu-search-internal ""))
1369 (defun tpu-search-forward nil
1370 "Search for a string or regular expression.
1371 The search is begins in the forward direction."
1373 (setq tpu-searching-forward t)
1375 (tpu-search-internal ""))
1377 (defun tpu-search-reverse nil
1378 "Search for a string or regular expression.
1379 The search is begins in the reverse direction."
1381 (setq tpu-searching-forward nil)
1383 (tpu-search-internal ""))
1385 (defun tpu-search-again nil
1386 "Search for the same string or regular expression as last time.
1387 The search is performed in the current direction."
1389 (tpu-search-internal tpu-search-last-string))
1391 ;; tpu-set-search defines the search functions used by the TPU-edt internal
1392 ;; search function. It should be called whenever the direction changes, or
1393 ;; the regular expression mode is turned on or off. It can also be called
1394 ;; to ensure that the next search will be in the current direction. It is
1397 ;; tpu-advance tpu-backup
1398 ;; tpu-toggle-regexp tpu-toggle-search-direction (t)
1399 ;; tpu-search tpu-lm-replace
1400 ;; tpu-search-forward (t) tpu-search-reverse (t)
1401 ;; tpu-search-forward-exit (t) tpu-search-backward-exit (t)
1403 (defun tpu-set-search (&optional arg)
1404 "Set the search functions and set the search direction to the current
1405 direction. If an argument is specified, don't set the search direction."
1406 (if (not arg) (setq tpu-searching-forward tpu-advance))
1407 (cond (tpu-searching-forward
1409 (fset 'tpu-emacs-search 're-search-forward)
1410 (fset 'tpu-emacs-rev-search 're-search-backward))
1412 (fset 'tpu-emacs-search 'search-forward)
1413 (fset 'tpu-emacs-rev-search 'search-backward))))
1416 (fset 'tpu-emacs-search 're-search-backward)
1417 (fset 'tpu-emacs-rev-search 're-search-forward))
1419 (fset 'tpu-emacs-search 'search-backward)
1420 (fset 'tpu-emacs-rev-search 'search-forward))))))
1422 (defun tpu-search-internal (pat &optional quiet)
1423 "Search for a string or regular expression."
1424 (setq tpu-search-last-string
1425 (if (not (string= "" pat)) pat (tpu-regexp-prompt "Search: ")))
1430 (let ((case-fold-search
1431 (and case-fold-search (tpu-check-search-case tpu-search-last-string))))
1433 (cond ((tpu-emacs-search tpu-search-last-string nil t)
1434 (tpu-set-match) (goto-char (tpu-match-beginning)))
1437 (tpu-adjust-search t)
1438 (let ((found nil) (pos nil))
1440 (let ((tpu-searching-forward (not tpu-searching-forward)))
1442 (setq found (tpu-emacs-rev-search tpu-search-last-string nil t))
1443 (setq pos (match-beginning 0))))
1447 (cond ((tpu-y-or-n-p
1448 (format "Found in %s direction. Go there? "
1449 (if tpu-searching-forward "reverse" "forward")))
1450 (goto-char pos) (tpu-set-match)
1451 (tpu-toggle-search-direction))))
1456 "%sSearch failed: \"%s\""
1457 (if tpu-regexp-p "RE " "") tpu-search-last-string)))))))))
1459 (defalias 'tpu-search-internal-core (symbol-function 'tpu-search-internal))
1461 (defun tpu-check-search-case (string)
1462 "Returns t if string contains upper case."
1463 ;; if using regexp, eliminate upper case forms (\B \W \S.)
1465 (let ((pat (copy-sequence string)) (case-fold-search nil) (pos 0))
1466 (while (setq pos (string-match "\\\\\\\\" pat)) (aset pat (+ 1 pos) ?.))
1467 (while (setq pos (string-match "\\\\B" pat)) (aset pat (+ 1 pos) ?.))
1468 (while (setq pos (string-match "\\\\W" pat)) (aset pat (+ 1 pos) ?.))
1469 (while (setq pos (string-match "\\\\S." pat))
1470 (aset pat (+ 1 pos) ?.) (aset pat (+ 2 pos) ?.))
1471 (string-equal pat (downcase pat)))
1472 (string-equal string (downcase string))))
1474 (defun tpu-adjust-search (&optional arg)
1475 "For forward searches, move forward a character before searching,
1476 and backward a character after a failed search. Arg means end of search."
1477 (if tpu-searching-forward
1478 (cond (arg (if (not (bobp)) (forward-char -1)))
1479 (t (if (not (eobp)) (forward-char 1))))))
1481 (defun tpu-toggle-search-direction nil
1482 "Toggle the TPU-edt search direction.
1483 Used for reversing a search in progress."
1485 (setq tpu-searching-forward (not tpu-searching-forward))
1487 (and (interactive-p)
1488 (message "Searching %sward."
1489 (if tpu-searching-forward "for" "back"))))
1491 (defun tpu-search-forward-exit nil
1492 "Set search direction forward and exit minibuffer."
1494 (setq tpu-searching-forward t)
1498 (defun tpu-search-backward-exit nil
1499 "Set search direction backward and exit minibuffer."
1501 (setq tpu-searching-forward nil)
1507 ;;; Select / Unselect
1509 (defun tpu-select (&optional quiet)
1510 "Sets the mark to define one end of a region."
1513 (tpu-unselect quiet))
1515 (tpu-set-mark (point))
1516 (tpu-update-mode-line)
1517 (if (not quiet) (message "Move the text cursor to select text.")))))
1519 (defun tpu-unselect (&optional quiet)
1520 "Removes the mark to unselect the current region."
1523 (setq mark-ring nil)
1525 (tpu-update-mode-line)
1526 (if (not quiet) (message "Selection canceled.")))
1532 (defun tpu-toggle-rectangle nil
1533 "Toggle rectangular mode for remove and insert."
1535 (setq tpu-rectangular-p (not tpu-rectangular-p))
1536 (setq tpu-rectangle-string (if tpu-rectangular-p " Rect" ""))
1537 (tpu-update-mode-line)
1538 (and (interactive-p)
1539 (message "Rectangular cut and paste %sabled."
1540 (if tpu-rectangular-p "en" "dis"))))
1542 (defun tpu-arrange-rectangle nil
1543 "Adjust point and mark to mark upper left and lower right
1544 corners of a rectangle."
1545 (let ((mc (current-column))
1546 (pc (progn (exchange-point-and-mark) (current-column))))
1548 (cond ((> (point) (tpu-mark)) ; point on lower line
1549 (cond ((> pc mc) ; point @ lower-right
1550 (exchange-point-and-mark)) ; point -> upper-left
1552 (t ; point @ lower-left
1553 (move-to-column mc t) ; point -> lower-right
1554 (exchange-point-and-mark) ; point -> upper-right
1555 (move-to-column pc t)))) ; point -> upper-left
1557 (t ; point on upper line
1558 (cond ((> pc mc) ; point @ upper-right
1559 (move-to-column mc t) ; point -> upper-left
1560 (exchange-point-and-mark) ; point -> lower-left
1561 (move-to-column pc t) ; point -> lower-right
1562 (exchange-point-and-mark))))))) ; point -> upper-left
1564 (defun tpu-cut-text nil
1565 "Delete the selected region.
1566 The text is saved for the tpu-paste command."
1569 (cond (tpu-rectangular-p
1570 (tpu-arrange-rectangle)
1571 (picture-clear-rectangle (point) (tpu-mark) (not overwrite-mode))
1574 (setq tpu-last-deleted-region
1575 (buffer-substring (tpu-mark) (point)))
1576 (delete-region (tpu-mark) (point))
1579 (let ((beg (tpu-match-beginning)) (end (tpu-match-end)))
1580 (setq tpu-last-deleted-region (buffer-substring beg end))
1581 (delete-region beg end)
1584 (tpu-error "No selection active."))))
1586 (defun tpu-store-text nil
1587 "Copy the selected region to the cut buffer without deleting it.
1588 The text is saved for the tpu-paste command."
1591 (cond (tpu-rectangular-p
1593 (tpu-arrange-rectangle)
1594 (setq picture-killed-rectangle
1595 (extract-rectangle (point) (tpu-mark))))
1598 (setq tpu-last-deleted-region
1599 (buffer-substring (tpu-mark) (point)))
1602 (setq tpu-last-deleted-region
1603 (buffer-substring (tpu-match-beginning) (tpu-match-end)))
1606 (tpu-error "No selection active."))))
1608 (defun tpu-cut (arg)
1609 "Copy selected region to the cut buffer. In the absence of an
1610 argument, delete the selected region too."
1612 (if arg (tpu-store-text) (tpu-cut-text)))
1614 (defun tpu-append-region (arg)
1615 "Append selected region to the tpu-cut buffer. In the absence of an
1616 argument, delete the selected region too."
1619 (let ((beg (region-beginning)) (end (region-end)))
1620 (setq tpu-last-deleted-region
1621 (concat tpu-last-deleted-region
1622 (buffer-substring beg end)))
1623 (if (not arg) (delete-region beg end))
1626 (let ((beg (tpu-match-beginning)) (end (tpu-match-end)))
1627 (setq tpu-last-deleted-region
1628 (concat tpu-last-deleted-region
1629 (buffer-substring beg end)))
1630 (if (not arg) (delete-region beg end))
1633 (tpu-error "No selection active."))))
1635 (defun tpu-delete-current-line (num)
1636 "Delete one or specified number of lines after point.
1637 This includes the newline character at the end of each line.
1638 They are saved for the TPU-edt undelete-lines command."
1640 (let ((beg (point)))
1642 (if (not (eq (preceding-char) ?\n))
1644 (setq tpu-last-deleted-lines
1645 (buffer-substring beg (point)))
1646 (delete-region beg (point))))
1648 (defun tpu-delete-to-eol (num)
1649 "Delete text up to end of line.
1650 With argument, delete up to the Nth line-end past point.
1651 They are saved for the TPU-edt undelete-lines command."
1653 (let ((beg (point)))
1656 (setq tpu-last-deleted-lines
1657 (buffer-substring beg (point)))
1658 (delete-region beg (point))))
1660 (defun tpu-delete-to-bol (num)
1661 "Delete text back to beginning of line.
1662 With argument, delete up to the Nth line-end past point.
1663 They are saved for the TPU-edt undelete-lines command."
1665 (let ((beg (point)))
1666 (tpu-next-beginning-of-line num)
1667 (setq tpu-last-deleted-lines
1668 (buffer-substring (point) beg))
1669 (delete-region (point) beg)))
1671 (defun tpu-delete-current-word (num)
1672 "Delete one or specified number of words after point.
1673 They are saved for the TPU-edt undelete-words command."
1675 (let ((beg (point)))
1676 (tpu-forward-to-word num)
1677 (setq tpu-last-deleted-words
1678 (buffer-substring beg (point)))
1679 (delete-region beg (point))))
1681 (defun tpu-delete-previous-word (num)
1682 "Delete one or specified number of words before point.
1683 They are saved for the TPU-edt undelete-words command."
1685 (let ((beg (point)))
1686 (tpu-backward-to-word num)
1687 (setq tpu-last-deleted-words
1688 (buffer-substring (point) beg))
1689 (delete-region beg (point))))
1691 (defun tpu-delete-current-char (num)
1692 "Delete one or specified number of characters after point. The last
1693 character deleted is saved for the TPU-edt undelete-char command."
1695 (while (and (> num 0) (not (eobp)))
1696 (setq tpu-last-deleted-char (char-after (point)))
1697 (cond (overwrite-mode
1698 (picture-clear-column 1)
1702 (setq num (1- num))))
1706 ;;; Undelete / Paste
1708 (defun tpu-paste (num)
1709 "Insert the last region or rectangle of killed text.
1710 With argument reinserts the text that many times."
1713 (cond (tpu-rectangular-p
1714 (let ((beg (point)))
1716 (picture-yank-rectangle (not overwrite-mode))
1720 (insert tpu-last-deleted-region)))
1721 (setq num (1- num))))
1723 (defun tpu-undelete-lines (num)
1724 "Insert lines deleted by last TPU-edt line-deletion command.
1725 With argument reinserts lines that many times."
1727 (let ((beg (point)))
1729 (insert tpu-last-deleted-lines)
1730 (setq num (1- num)))
1733 (defun tpu-undelete-words (num)
1734 "Insert words deleted by last TPU-edt word-deletion command.
1735 With argument reinserts words that many times."
1737 (let ((beg (point)))
1739 (insert tpu-last-deleted-words)
1740 (setq num (1- num)))
1743 (defun tpu-undelete-char (num)
1744 "Insert character deleted by last TPU-edt character-deletion command.
1745 With argument reinserts the character that many times."
1748 (if overwrite-mode (prog1 (forward-char -1) (delete-char 1)))
1749 (insert tpu-last-deleted-char)
1751 (setq num (1- num))))
1755 ;;; Replace and Substitute
1757 (defun tpu-replace nil
1758 "Replace the selected region with the contents of the cut buffer."
1761 (let ((beg (region-beginning)) (end (region-end)))
1762 (setq tpu-last-replaced-text (buffer-substring beg end))
1763 (delete-region beg end)
1764 (insert tpu-last-deleted-region)
1767 (let ((beg (tpu-match-beginning)) (end (tpu-match-end)))
1768 (setq tpu-last-replaced-text (buffer-substring beg end))
1769 (replace-match tpu-last-deleted-region
1770 (not case-replace) (not tpu-regexp-p))
1773 (tpu-error "No selection active."))))
1775 (defun tpu-substitute (num)
1776 "Replace the selected region with the contents of the cut buffer, and
1777 repeat most recent search. A numeric argument serves as a repeat count.
1778 A negative argument means replace all occurrences of the search string."
1780 (cond ((or (tpu-mark) (tpu-check-match))
1781 (while (and (not (= num 0)) (or (tpu-mark) (tpu-check-match)))
1782 (let ((beg (point)))
1784 (if tpu-searching-forward (forward-char -1) (goto-char beg))
1785 (if (= num 1) (tpu-search-internal tpu-search-last-string)
1786 (tpu-search-internal-core tpu-search-last-string)))
1787 (setq num (1- num))))
1789 (tpu-error "No selection active."))))
1791 (defun tpu-lm-replace (from to)
1792 "Interactively search for OLD-string and substitute NEW-string."
1793 (interactive (list (tpu-regexp-prompt "Old String: ")
1794 (tpu-regexp-prompt "New String: ")))
1796 (let ((doit t) (strings 0))
1798 ;; Can't replace null strings
1799 (if (string= "" from) (tpu-error "No string to replace."))
1801 ;; Find the first occurrence
1803 (tpu-search-internal from t)
1805 ;; Loop on replace question - yes, no, all, last, or quit.
1807 (if (not (tpu-check-match)) (setq doit nil)
1809 (move-overlay tpu-replace-overlay
1810 (tpu-match-beginning) (tpu-match-end) (current-buffer))
1811 (message "Replace? Type Yes, No, All, Last, or Quit: ")
1812 (let ((ans (read-char)))
1814 (cond ((or (= ans ?y) (= ans ?Y) (= ans ?\r) (= ans ?\ ))
1815 (let ((beg (point)))
1816 (replace-match to (not case-replace) (not tpu-regexp-p))
1817 (setq strings (1+ strings))
1818 (if tpu-searching-forward (forward-char -1) (goto-char beg)))
1819 (tpu-search-internal from t))
1821 ((or (= ans ?n) (= ans ?N) (= ans ?\C-?))
1822 (tpu-search-internal from t))
1824 ((or (= ans ?a) (= ans ?A))
1826 (let ((beg (point)))
1827 (replace-match to (not case-replace) (not tpu-regexp-p))
1828 (setq strings (1+ strings))
1829 (if tpu-searching-forward (forward-char -1) (goto-char beg)))
1830 (tpu-search-internal-core from t)
1831 (while (tpu-check-match)
1832 (let ((beg (point)))
1833 (replace-match to (not case-replace) (not tpu-regexp-p))
1834 (setq strings (1+ strings))
1835 (if tpu-searching-forward (forward-char -1) (goto-char beg)))
1836 (tpu-search-internal-core from t)))
1839 ((or (= ans ?l) (= ans ?L))
1840 (let ((beg (point)))
1841 (replace-match to (not case-replace) (not tpu-regexp-p))
1842 (setq strings (1+ strings))
1843 (if tpu-searching-forward (forward-char -1) (goto-char beg)))
1846 ((or (= ans ?q) (= ans ?Q))
1848 (setq doit nil)))))))
1850 (move-overlay tpu-replace-overlay 1 1 (current-buffer))
1851 (message "Replaced %s occurrence%s." strings (if (not (= 1 strings)) "s" ""))))
1853 (defun tpu-emacs-replace (&optional dont-ask)
1854 "A TPU-edt interface to the emacs replace functions. If TPU-edt is
1855 currently in regular expression mode, the emacs regular expression
1856 replace functions are used. If an argument is supplied, replacements
1857 are performed without asking. Only works in forward direction."
1860 (setq current-prefix-arg nil)
1862 (if tpu-regexp-p 'replace-regexp 'replace-string)))
1865 (if tpu-regexp-p 'query-replace-regexp 'query-replace)))))
1867 (defun tpu-add-at-bol (text)
1868 "Add text to the beginning of each line in a region,
1869 or each line in the entire buffer if no region is selected."
1871 (list (tpu-string-prompt "String to add: " 'tpu-add-at-bol-hist)))
1872 (if (string= "" text) (tpu-error "No string specified."))
1875 (if (> (point) (tpu-mark)) (exchange-point-and-mark))
1876 (while (and (< (point) (tpu-mark)) (re-search-forward "^" (tpu-mark) t))
1877 (if (< (point) (tpu-mark)) (replace-match text))))
1881 (goto-char (point-min))
1882 (while (and (re-search-forward "^" nil t) (not (eobp)))
1883 (replace-match text))))))
1885 (defun tpu-add-at-eol (text)
1886 "Add text to the end of each line in a region,
1887 or each line of the entire buffer if no region is selected."
1889 (list (tpu-string-prompt "String to add: " 'tpu-add-at-eol-hist)))
1890 (if (string= "" text) (tpu-error "No string specified."))
1893 (if (> (point) (tpu-mark)) (exchange-point-and-mark))
1894 (while (< (point) (tpu-mark))
1896 (if (<= (point) (tpu-mark)) (insert text))
1901 (goto-char (point-min))
1903 (end-of-line) (insert text) (forward-line))))))
1905 (defun tpu-trim-line-ends nil
1906 "Removes trailing whitespace from every line in the buffer."
1910 (goto-char (point-min))
1911 (while (re-search-forward "[ \t][ \t]*$" nil t)
1912 (delete-region (match-beginning 0) (match-end 0))))))
1916 ;;; Movement by character
1918 (defun tpu-char (num)
1919 "Move to the next character in the current direction.
1920 A repeat count means move that many characters."
1922 (if tpu-advance (tpu-forward-char num) (tpu-backward-char num)))
1924 (defun tpu-forward-char (num)
1925 "Move right ARG characters (left if ARG is negative)."
1929 (defun tpu-backward-char (num)
1930 "Move left ARG characters (right if ARG is negative)."
1932 (backward-char num))
1936 ;;; Movement by word
1938 (defvar tpu-word-separator-list '()
1939 "List of additional word separators.")
1940 (defvar tpu-skip-chars "^ \t"
1941 "Characters to skip when moving by word.
1942 Additional word separators are added to this string.")
1944 (defun tpu-word (num)
1945 "Move to the beginning of the next word in the current direction.
1946 A repeat count means move that many words."
1948 (if tpu-advance (tpu-forward-to-word num) (tpu-backward-to-word num)))
1950 (defun tpu-forward-to-word (num)
1951 "Move forward until encountering the beginning of a word.
1952 With argument, do this that many times."
1954 (while (and (> num 0) (not (eobp)))
1955 (let* ((beg (point))
1956 (end (prog2 (end-of-line) (point) (goto-char beg))))
1959 ((memq (char-after (point)) tpu-word-separator-list)
1961 (skip-chars-forward " \t" end))
1963 (skip-chars-forward tpu-skip-chars end)
1964 (skip-chars-forward " \t" end))))
1965 (setq num (1- num))))
1967 (defun tpu-backward-to-word (num)
1968 "Move backward until encountering the beginning of a word.
1969 With argument, do this that many times."
1971 (while (and (> num 0) (not (bobp)))
1972 (let* ((beg (point))
1973 (end (prog2 (beginning-of-line) (point) (goto-char beg))))
1976 ((memq (char-after (1- (point))) tpu-word-separator-list)
1979 (skip-chars-backward " \t" end)
1980 (skip-chars-backward tpu-skip-chars end)
1981 (if (and (not (bolp)) (= ? (char-syntax (char-after (point)))))
1982 (forward-char -1)))))
1983 (setq num (1- num))))
1985 (defun tpu-add-word-separators (separators)
1986 "Add new word separators for TPU-edt word commands."
1987 (interactive "sSeparators: ")
1988 (let* ((n 0) (length (length separators)))
1990 (let ((char (aref separators n))
1991 (ss (substring separators n (1+ n))))
1992 (cond ((not (memq char tpu-word-separator-list))
1993 (setq tpu-word-separator-list
1994 (append ss tpu-word-separator-list))
1996 (setq tpu-skip-chars (concat tpu-skip-chars "\\-")))
1998 (setq tpu-skip-chars (concat tpu-skip-chars "\\\\")))
2000 (setq tpu-skip-chars (concat tpu-skip-chars "\\^")))
2002 (setq tpu-skip-chars (concat tpu-skip-chars ss))))))
2005 (defun tpu-reset-word-separators nil
2006 "Reset word separators to default value."
2008 (setq tpu-word-separator-list nil)
2009 (setq tpu-skip-chars "^ \t"))
2011 (defun tpu-set-word-separators (separators)
2012 "Set new word separators for TPU-edt word commands."
2013 (interactive "sSeparators: ")
2014 (tpu-reset-word-separators)
2015 (tpu-add-word-separators separators))
2019 ;;; Movement by line
2021 (defun tpu-next-line (num)
2023 Prefix argument serves as a repeat count."
2025 (next-line-internal num)
2026 (setq this-command 'next-line))
2028 (defun tpu-previous-line (num)
2029 "Move to previous line.
2030 Prefix argument serves as a repeat count."
2032 (next-line-internal (- num))
2033 (setq this-command 'previous-line))
2035 (defun tpu-next-beginning-of-line (num)
2036 "Move to beginning of line; if at beginning, move to beginning of next line.
2037 Accepts a prefix argument for the number of lines to move."
2040 (forward-visible-line (- 1 num)))
2042 (defun tpu-end-of-line (num)
2043 "Move to the next end of line in the current direction.
2044 A repeat count means move that many lines."
2046 (if tpu-advance (tpu-next-end-of-line num) (tpu-previous-end-of-line num)))
2048 (defun tpu-next-end-of-line (num)
2049 "Move to end of line; if at end, move to end of next line.
2050 Accepts a prefix argument for the number of lines to move."
2055 (defun tpu-previous-end-of-line (num)
2057 Accepts a prefix argument for the number of lines to move."
2059 (end-of-line (- 1 num)))
2061 (defun tpu-current-end-of-line nil
2062 "Move point to end of current line."
2064 (let ((beg (point)))
2066 (if (= beg (point)) (message "You are already at the end of a line."))))
2068 (defun tpu-line (num)
2069 "Move to the beginning of the next line in the current direction.
2070 A repeat count means move that many lines."
2072 (if tpu-advance (tpu-forward-line num) (tpu-backward-line num)))
2074 (defun tpu-forward-line (num)
2075 "Move to beginning of next line.
2076 Prefix argument serves as a repeat count."
2080 (defun tpu-backward-line (num)
2081 "Move to beginning of previous line.
2082 Prefix argument serves as repeat count."
2084 (or (bolp) (>= 0 num) (setq num (- num 1)))
2085 (forward-line (- num)))
2089 ;;; Movement by paragraph
2091 (defun tpu-paragraph (num)
2092 "Move to the next paragraph in the current direction.
2093 A repeat count means move that many paragraphs."
2096 (tpu-next-paragraph num) (tpu-previous-paragraph num)))
2098 (defun tpu-next-paragraph (num)
2099 "Move to beginning of the next paragraph.
2100 Accepts a prefix argument for the number of paragraphs."
2103 (while (and (not (eobp)) (> num 0))
2104 (if (re-search-forward "^[ \t]*$" nil t)
2105 (if (re-search-forward "[^ \t\n]" nil t)
2106 (goto-char (match-beginning 0))
2107 (goto-char (point-max))))
2108 (setq num (1- num)))
2109 (beginning-of-line))
2112 (defun tpu-previous-paragraph (num)
2113 "Move to beginning of previous paragraph.
2114 Accepts a prefix argument for the number of paragraphs."
2117 (while (and (not (bobp)) (> num 0))
2118 (if (not (and (re-search-backward "^[ \t]*$" nil t)
2119 (re-search-backward "[^ \t\n]" nil t)
2120 (re-search-backward "^[ \t]*$" nil t)
2121 (progn (re-search-forward "[^ \t\n]" nil t)
2122 (goto-char (match-beginning 0)))))
2123 (goto-char (point-min)))
2124 (setq num (1- num)))
2125 (beginning-of-line))
2129 ;;; Movement by page
2131 (defun tpu-page (num)
2132 "Move to the next page in the current direction.
2133 A repeat count means move that many pages."
2135 (if tpu-advance (forward-page num) (backward-page num))
2136 (if (eobp) (recenter -1)))
2140 ;;; Scrolling and movement within the buffer
2142 (defun tpu-scroll-window (num)
2143 "Scroll the display to the next section in the current direction.
2144 A repeat count means scroll that many sections."
2146 (if tpu-advance (tpu-scroll-window-up num) (tpu-scroll-window-down num)))
2148 (defun tpu-scroll-window-down (num)
2149 "Scroll the display down to the next section.
2150 A repeat count means scroll that many sections."
2152 (let* ((beg (tpu-current-line))
2153 (height (1- (window-height)))
2154 (lines (* num (/ (* height tpu-percent-scroll) 100))))
2155 (next-line-internal (- lines))
2156 (if (> lines beg) (recenter 0))))
2158 (defun tpu-scroll-window-up (num)
2159 "Scroll the display up to the next section.
2160 A repeat count means scroll that many sections."
2162 (let* ((beg (tpu-current-line))
2163 (height (1- (window-height)))
2164 (lines (* num (/ (* height tpu-percent-scroll) 100))))
2165 (next-line-internal lines)
2166 (if (>= (+ lines beg) height) (recenter -1))))
2168 (defun tpu-pan-right (num)
2169 "Pan right tpu-pan-columns (16 by default).
2170 Accepts a prefix argument for the number of tpu-pan-columns to scroll."
2172 (scroll-left (* tpu-pan-columns num)))
2174 (defun tpu-pan-left (num)
2175 "Pan left tpu-pan-columns (16 by default).
2176 Accepts a prefix argument for the number of tpu-pan-columns to scroll."
2178 (scroll-right (* tpu-pan-columns num)))
2180 (defun tpu-move-to-beginning nil
2181 "Move cursor to the beginning of buffer, but don't set the mark."
2183 (goto-char (point-min)))
2185 (defun tpu-move-to-end nil
2186 "Move cursor to the end of buffer, but don't set the mark."
2188 (goto-char (point-max))
2191 (defun tpu-goto-percent (perc)
2192 "Move point to ARG percentage of the buffer."
2193 (interactive "NGoto-percentage: ")
2194 (if (or (> perc 100) (< perc 0))
2195 (tpu-error "Percentage %d out of range 0 < percent < 100." perc)
2196 (goto-char (/ (* (point-max) perc) 100))))
2198 (defun tpu-beginning-of-window nil
2199 "Move cursor to top of window."
2201 (move-to-window-line 0))
2203 (defun tpu-end-of-window nil
2204 "Move cursor to bottom of window."
2206 (move-to-window-line -1))
2208 (defun tpu-line-to-bottom-of-window nil
2209 "Move the current line to the bottom of the window."
2213 (defun tpu-line-to-top-of-window nil
2214 "Move the current line to the top of the window."
2222 (defun tpu-advance-direction nil
2223 "Set TPU Advance mode so keypad commands move forward."
2225 (setq tpu-direction-string " Advance")
2226 (setq tpu-advance t)
2227 (setq tpu-reverse nil)
2229 (tpu-update-mode-line))
2231 (defun tpu-backup-direction nil
2232 "Set TPU Backup mode so keypad commands move backward."
2234 (setq tpu-direction-string " Reverse")
2235 (setq tpu-advance nil)
2236 (setq tpu-reverse t)
2238 (tpu-update-mode-line))
2240 (defun tpu-toggle-direction nil
2241 "Change the current TPU direction."
2243 (if tpu-advance (tpu-backup-direction) (tpu-advance-direction)))
2247 ;;; Minibuffer map additions to make KP_enter = RET
2249 ;; Standard Emacs settings under xterm in function-key-map map
2250 ;; "\eOM" to [kp-enter] and [kp-enter] to RET, but since the output of the map
2251 ;; is not fed back into the map, the key stays as kp-enter :-(.
2252 (define-key minibuffer-local-map [kp-enter] 'exit-minibuffer)
2253 ;; These are not necessary because they are inherited.
2254 ;; (define-key minibuffer-local-ns-map [kp-enter] 'exit-minibuffer)
2255 ;; (define-key minibuffer-local-completion-map [kp-enter] 'exit-minibuffer)
2256 (define-key minibuffer-local-must-match-map [kp-enter] 'minibuffer-complete-and-exit)
2260 ;;; Minibuffer map additions to set search direction
2262 (define-key minibuffer-local-map "\eOt" 'tpu-search-forward-exit) ;KP4
2263 (define-key minibuffer-local-map "\eOu" 'tpu-search-backward-exit) ;KP5
2267 ;;; Functions to set, reset, and toggle the control key bindings
2269 (defun tpu-set-control-keys nil
2270 "Set control keys to TPU style functions."
2271 (define-key global-map "\C-\\" 'quoted-insert) ; ^\
2272 (define-key global-map "\C-a" 'tpu-toggle-overwrite-mode) ; ^A
2273 (define-key global-map "\C-b" 'repeat-complex-command) ; ^B
2274 (define-key global-map "\C-e" 'tpu-current-end-of-line) ; ^E
2275 (define-key global-map "\C-h" 'tpu-next-beginning-of-line) ; ^H (BS)
2276 (define-key global-map "\C-j" 'tpu-delete-previous-word) ; ^J (LF)
2277 (define-key global-map "\C-k" 'tpu-define-macro-key) ; ^K
2278 (define-key global-map "\C-l" 'tpu-insert-formfeed) ; ^L (FF)
2279 (define-key global-map "\C-r" 'recenter) ; ^R
2280 (define-key global-map "\C-u" 'tpu-delete-to-bol) ; ^U
2281 (define-key global-map "\C-v" 'tpu-quoted-insert) ; ^V
2282 (define-key global-map "\C-w" 'redraw-display) ; ^W
2283 (define-key global-map "\C-z" 'tpu-exit) ; ^Z
2284 (setq tpu-control-keys t))
2286 (defun tpu-reset-control-keys (tpu-style)
2287 "Set control keys to TPU or emacs style functions."
2288 (let* ((tpu (and tpu-style (not tpu-control-keys)))
2289 (emacs (and (not tpu-style) tpu-control-keys))
2290 (doit (or tpu emacs)))
2292 (if emacs (setq tpu-global-map (copy-keymap global-map)))
2293 (let ((map (if tpu tpu-global-map tpu-original-global-map)))
2295 (define-key global-map "\C-\\" (lookup-key map "\C-\\")) ; ^\
2296 (define-key global-map "\C-a" (lookup-key map "\C-a")) ; ^A
2297 (define-key global-map "\C-b" (lookup-key map "\C-b")) ; ^B
2298 (define-key global-map "\C-e" (lookup-key map "\C-e")) ; ^E
2299 (define-key global-map "\C-h" (lookup-key map "\C-h")) ; ^H (BS)
2300 (define-key global-map "\C-j" (lookup-key map "\C-j")) ; ^J (LF)
2301 (define-key global-map "\C-k" (lookup-key map "\C-k")) ; ^K
2302 (define-key global-map "\C-l" (lookup-key map "\C-l")) ; ^L (FF)
2303 (define-key global-map "\C-r" (lookup-key map "\C-r")) ; ^R
2304 (define-key global-map "\C-u" (lookup-key map "\C-u")) ; ^U
2305 (define-key global-map "\C-v" (lookup-key map "\C-v")) ; ^V
2306 (define-key global-map "\C-w" (lookup-key map "\C-w")) ; ^W
2307 (define-key global-map "\C-z" (lookup-key map "\C-z")) ; ^Z
2308 (setq tpu-control-keys tpu-style))))))
2310 (defun tpu-toggle-control-keys nil
2311 "Toggles control key bindings between TPU-edt and Emacs."
2313 (tpu-reset-control-keys (not tpu-control-keys))
2314 (and (interactive-p)
2315 (message "Control keys function with %s bindings."
2316 (if tpu-control-keys "TPU-edt" "Emacs"))))
2320 ;;; Emacs version 19 minibuffer history support
2322 (defun tpu-next-history-element (n)
2323 "Insert the next element of the minibuffer history into the minibuffer."
2325 (next-history-element n)
2326 (goto-char (point-max)))
2328 (defun tpu-previous-history-element (n)
2329 "Insert the previous element of the minibuffer history into the minibuffer."
2331 (previous-history-element n)
2332 (goto-char (point-max)))
2334 (defun tpu-arrow-history nil
2335 "Modify minibuffer maps to use arrows for history recall."
2337 (dolist (cur (where-is-internal 'tpu-previous-line))
2338 (define-key read-expression-map cur 'tpu-previous-history-element)
2339 (define-key minibuffer-local-map cur 'tpu-previous-history-element)
2340 ;; These are inherited anyway. --Stef
2341 ;; (define-key minibuffer-local-ns-map cur 'tpu-previous-history-element)
2342 ;; (define-key minibuffer-local-completion-map cur 'tpu-previous-history-element)
2343 ;; (define-key minibuffer-local-must-match-map cur 'tpu-previous-history-element)
2346 (dolist (cur (where-is-internal 'tpu-next-line))
2347 (define-key read-expression-map cur 'tpu-next-history-element)
2348 (define-key minibuffer-local-map cur 'tpu-next-history-element)
2349 ;; These are inherited anyway. --Stef
2350 ;; (define-key minibuffer-local-ns-map cur 'tpu-next-history-element)
2351 ;; (define-key minibuffer-local-completion-map cur 'tpu-next-history-element)
2352 ;; (define-key minibuffer-local-must-match-map cur 'tpu-next-history-element)
2357 ;;; Emacs version 19 X-windows key definition support
2359 (defun tpu-load-xkeys (file)
2360 "Load the TPU-edt X-windows key definitions FILE.
2361 If FILE is nil, try to load a default file. The default file names are
2362 `~/.tpu-lucid-keys' for Lucid emacs, and `~/.tpu-keys' for Emacs."
2363 (interactive "fX key definition file: ")
2365 (setq file (expand-file-name file)))
2367 (setq file (expand-file-name tpu-xkeys-file)))
2369 (setq file (convert-standard-filename
2370 (expand-file-name "~/.tpu-lucid-keys"))))
2372 (setq file (convert-standard-filename
2373 (expand-file-name "~/.tpu-keys")))
2374 (and (not (file-exists-p file))
2376 (convert-standard-filename
2377 (expand-file-name "~/.tpu-gnu-keys")))
2379 (convert-standard-filename
2380 (expand-file-name "~/.tpu-gnu-keys")) file))))
2381 (cond ((file-readable-p file)
2384 (switch-to-buffer "*scratch*")
2388 Ack!! You're running TPU-edt under X-windows without loading an
2389 X key definition file. To create a TPU-edt X key definition
2390 file, run the tpu-mapper.el program. It came with TPU-edt. It
2391 even includes directions on how to use it! Perhaps it's lying
2392 around here someplace. ")
2393 (let ((file "tpu-mapper.el")
2396 (search-list (append (list (expand-file-name ".")) load-path)))
2397 (while (and (not found) search-list)
2398 (setq path (concat (car search-list)
2399 (if (string-match "/$" (car search-list)) "" "/")
2401 (if (and (file-exists-p path) (not (file-directory-p path)))
2403 (setq search-list (cdr search-list)))
2406 "Ah yes, there it is, in \n\n %s \n\n" path))
2407 (if (tpu-y-or-n-p "Do you want to run it now? ")
2410 (insert "Nope, I can't seem to find it. :-(\n\n")
2413 (defun tpu-copy-keyfile (oldname newname)
2414 "Copy the TPU-edt X key definitions file to the new default name."
2415 (interactive "fOld name: \nFNew name: ")
2416 (if (not (get-buffer "*TPU-Notice*")) (generate-new-buffer "*TPU-Notice*"))
2417 (set-buffer "*TPU-Notice*")
2422 The default name of the TPU-edt key definition file has changed
2423 from `~/.tpu-gnu-keys' to `~/.tpu-keys'. With your permission,
2424 your key definitions will be copied to the new file. If you'll
2425 never use older versions of Emacs, you can remove the old file.
2426 If the copy fails, you'll be asked if you want to create a new
2427 key definitions file. Do you want to copy your key definition
2430 (save-window-excursion
2431 (switch-to-buffer-other-window "*TPU-Notice*")
2432 (shrink-window-if-larger-than-buffer)
2433 (goto-char (point-min))
2435 (and (tpu-y-or-n-p "Copy key definitions to the new file now? ")
2436 (condition-case conditions
2437 (copy-file oldname newname)
2438 (tpu-error (message "Sorry, couldn't copy - %s." (cdr conditions)))))
2439 (kill-buffer "*TPU-Notice*")))
2443 ;;; Start and Stop TPU-edt
2446 (defun tpu-edt-on ()
2447 "Turn on TPU/edt emulation."
2449 (and window-system (tpu-load-xkeys nil))
2451 (transient-mark-mode t)
2452 (add-hook 'post-command-hook 'tpu-search-highlight)
2453 (tpu-set-mode-line t)
2454 (tpu-advance-direction)
2455 ;; set page delimiter, display line truncation, and scrolling like TPU
2456 (setq-default page-delimiter "\f")
2457 (setq-default truncate-lines t)
2458 (setq scroll-step 1)
2459 (setq global-map (copy-keymap global-map))
2460 (tpu-set-control-keys)
2461 (define-key global-map "\e[" CSI-map)
2462 (define-key global-map "\eO" SS3-map)
2463 (setq tpu-edt-mode t))
2465 (defun tpu-edt-off ()
2466 "Turn off TPU/edt emulation. Note that the keypad is left on."
2468 (tpu-reset-control-keys nil)
2469 (remove-hook 'post-command-hook 'tpu-search-highlight)
2470 (tpu-set-mode-line nil)
2471 (setq-default page-delimiter "^\f")
2472 (setq-default truncate-lines nil)
2473 (setq scroll-step 0)
2474 (setq global-map tpu-original-global-map)
2475 (use-global-map global-map)
2476 (setq tpu-edt-mode nil))
2480 ;; arch-tag: f3dfe61c-2cbd-4f73-b9cc-eb215020b857
2481 ;;; tpu-edt.el ends here