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emacs/lisp/obsolete/ws-mode.el
Stefan Monnier 79d585c2be * lisp/obsolete: Use lexical-binding 
Use lexical-binding in all the lisp/obsolete/*.el files.
While at it, removed redundant :group arguments and used #' to quote
functions.  Commented out the key bindings which the #' revealed
to lead to non-existing commands, and replaced those revealed to be obsolete.

* lisp/obsolete/cl-compat.el: Use cl-lib.

* lisp/obsolete/cust-print.el: Assume `defalias` exists.
(with-custom-print): Use `declare`.

* lisp/obsolete/iswitchb.el (iswitchb-init-XEmacs-trick)
(iswitchb-xemacs-backspacekey): Remove functions.

* lisp/obsolete/landmark.el (landmark, landmark-nslify-wts):
Prefer `apply` to `eval`.

* lisp/obsolete/longlines.el (longlines-mode): Don't use `add-to-list`
on a hook.

* lisp/obsolete/pgg-gpg.el (pgg-gpg-process-region): Use `clear-string`.

* lisp/obsolete/pgg-pgp.el (pgg-pgp-encrypt-region): Remove oddly
unused var `passphrase`.
(pgg-pgp-verify-region): Declare var `jam-zcat-filename-list`.

* lisp/obsolete/pgg-pgp5.el (pgg-pgp5-encrypt-region): Remove oddly
unused var `passphrase`.
(pgg-pgp5-verify-region): Declare var `jam-zcat-filename-list`.

* lisp/obsolete/pgg.el: Remove some XEmacs compatibility code.
(pgg-run-at-time, pgg-cancel-timer, pgg-clear-string): Remove functions.
Use their core equivalent instead.

* lisp/obsolete/rcompile.el (remote-compile): Remove unused vars `l`,
`l-host`, `l-user`, and `localname`.

* lisp/obsolete/starttls.el (starttls-any-program-available):
Use `define-obsolete-function-alias`.

* lisp/obsolete/tls.el (tls-format-message): Delete function, use
`format-message` instead.

* lisp/obsolete/url-ns.el (url-ns-prefs): Use `with-current-buffer`
and `dlet`.

* lisp/obsolete/vip.el (vip-escape-to-emacs): Remove unused var `key`.
(vip-command-argument, vip-read-string, ex-delete, ex-line): Remove
unused var `conditions`.
(ex-map): Use a closure instead of `eval`.
(ex-set): Make it an alias of `set-variable`.
(ex-substitute): Remove unused var `cont`.

* lisp/obsolete/abbrevlist.el:
* lisp/obsolete/bruce.el:
* lisp/obsolete/cc-compat.el:
* lisp/obsolete/cl-compat.el:
* lisp/obsolete/cl.el:
* lisp/obsolete/complete.el:
* lisp/obsolete/crisp.el:
* lisp/obsolete/cust-print.el:
* lisp/obsolete/erc-compat.el:
* lisp/obsolete/erc-hecomplete.el:
* lisp/obsolete/eudcb-ph.el:
* lisp/obsolete/fast-lock.el:
* lisp/obsolete/gs.el:
* lisp/obsolete/gulp.el:
* lisp/obsolete/html2text.el:
* lisp/obsolete/info-edit.el:
* lisp/obsolete/iswitchb.el:
* lisp/obsolete/landmark.el:
* lisp/obsolete/lazy-lock.el:
* lisp/obsolete/longlines.el:
* lisp/obsolete/mailpost.el:
* lisp/obsolete/mantemp.el:
* lisp/obsolete/meese.el:
* lisp/obsolete/messcompat.el:
* lisp/obsolete/metamail.el:
* lisp/obsolete/mouse-sel.el:
* lisp/obsolete/nnir.el:
* lisp/obsolete/old-emacs-lock.el:
* lisp/obsolete/otodo-mode.el:
* lisp/obsolete/patcomp.el:
* lisp/obsolete/pc-mode.el:
* lisp/obsolete/pc-select.el:
* lisp/obsolete/pgg-def.el:
* lisp/obsolete/pgg-gpg.el:
* lisp/obsolete/pgg-parse.el:
* lisp/obsolete/pgg-pgp.el:
* lisp/obsolete/pgg-pgp5.el:
* lisp/obsolete/pgg.el:
* lisp/obsolete/rcompile.el:
* lisp/obsolete/s-region.el:
* lisp/obsolete/sb-image.el:
* lisp/obsolete/sregex.el:
* lisp/obsolete/starttls.el:
* lisp/obsolete/sup-mouse.el:
* lisp/obsolete/terminal.el:
* lisp/obsolete/tls.el:
* lisp/obsolete/tpu-edt.el:
* lisp/obsolete/tpu-extras.el:
* lisp/obsolete/tpu-mapper.el:
* lisp/obsolete/url-ns.el:
* lisp/obsolete/vc-arch.el:
* lisp/obsolete/vi.el:
* lisp/obsolete/vip.el:
* lisp/obsolete/ws-mode.el:
* lisp/obsolete/yow.el: Use lexical-binding.
2021-02-22 16:54:59 -05:00

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;;; ws-mode.el --- WordStar emulation mode for GNU Emacs -*- lexical-binding: t -*-
;; Copyright (C) 1991, 2001-2021 Free Software Foundation, Inc.
;; Author: Juergen Nickelsen <nickel@cs.tu-berlin.de>
;; Version: 0.7
;; Keywords: emulations
;; Obsolete-since: 24.5
;; This file is part of GNU Emacs.
;; GNU Emacs is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
;;; Commentary:
;; This provides emulation of WordStar with a minor mode.
;;; Code:
(defgroup wordstar nil
"WordStar emulation within Emacs."
:prefix "wordstar-"
:prefix "ws-"
:group 'emulations)
(defcustom wordstar-mode-lighter " WordStar"
"Lighter shown in the modeline for `wordstar' mode."
:type 'string)
(defvar wordstar-C-k-map
(let ((map (make-keymap)))
(define-key map " " ())
(define-key map "0" #'ws-set-marker-0)
(define-key map "1" #'ws-set-marker-1)
(define-key map "2" #'ws-set-marker-2)
(define-key map "3" #'ws-set-marker-3)
(define-key map "4" #'ws-set-marker-4)
(define-key map "5" #'ws-set-marker-5)
(define-key map "6" #'ws-set-marker-6)
(define-key map "7" #'ws-set-marker-7)
(define-key map "8" #'ws-set-marker-8)
(define-key map "9" #'ws-set-marker-9)
(define-key map "b" #'ws-begin-block)
(define-key map "\C-b" #'ws-begin-block)
(define-key map "c" #'ws-copy-block)
(define-key map "\C-c" #'ws-copy-block)
(define-key map "d" #'save-buffers-kill-emacs)
(define-key map "\C-d" #'save-buffers-kill-emacs)
(define-key map "f" #'find-file)
(define-key map "\C-f" #'find-file)
(define-key map "h" #'ws-show-markers)
(define-key map "\C-h" #'ws-show-markers)
(define-key map "i" #'ws-indent-block)
(define-key map "\C-i" #'ws-indent-block)
(define-key map "k" #'ws-end-block)
(define-key map "\C-k" #'ws-end-block)
(define-key map "p" #'ws-print-block)
(define-key map "\C-p" #'ws-print-block)
(define-key map "q" #'kill-emacs)
(define-key map "\C-q" #'kill-emacs)
(define-key map "r" #'insert-file)
(define-key map "\C-r" #'insert-file)
(define-key map "s" #'save-some-buffers)
(define-key map "\C-s" #'save-some-buffers)
(define-key map "t" #'ws-mark-word)
(define-key map "\C-t" #'ws-mark-word)
(define-key map "u" #'ws-exdent-block)
(define-key map "\C-u" #'keyboard-quit)
(define-key map "v" #'ws-move-block)
(define-key map "\C-v" #'ws-move-block)
(define-key map "w" #'ws-write-block)
(define-key map "\C-w" #'ws-write-block)
(define-key map "x" #'save-buffers-kill-emacs)
(define-key map "\C-x" #'save-buffers-kill-emacs)
(define-key map "y" #'ws-delete-block)
(define-key map "\C-y" #'ws-delete-block)
map))
(defvar wordstar-C-o-map
(let ((map (make-keymap)))
(define-key map " " ())
(define-key map "c" #'wordstar-center-line)
(define-key map "\C-c" #'wordstar-center-line)
(define-key map "b" #'switch-to-buffer)
(define-key map "\C-b" #'switch-to-buffer)
(define-key map "j" #'justify-current-line)
(define-key map "\C-j" #'justify-current-line)
(define-key map "k" #'kill-buffer)
(define-key map "\C-k" #'kill-buffer)
(define-key map "l" #'list-buffers)
(define-key map "\C-l" #'list-buffers)
(define-key map "m" #'auto-fill-mode)
(define-key map "\C-m" #'auto-fill-mode)
(define-key map "r" #'set-fill-column)
(define-key map "\C-r" #'set-fill-column)
(define-key map "\C-u" #'keyboard-quit)
(define-key map "wd" #'delete-other-windows)
(define-key map "wh" #'split-window-right)
(define-key map "wo" #'other-window)
(define-key map "wv" #'split-window-below)
map))
(defvar wordstar-C-q-map
(let ((map (make-keymap)))
(define-key map " " ())
(define-key map "0" #'ws-find-marker-0)
(define-key map "1" #'ws-find-marker-1)
(define-key map "2" #'ws-find-marker-2)
(define-key map "3" #'ws-find-marker-3)
(define-key map "4" #'ws-find-marker-4)
(define-key map "5" #'ws-find-marker-5)
(define-key map "6" #'ws-find-marker-6)
(define-key map "7" #'ws-find-marker-7)
(define-key map "8" #'ws-find-marker-8)
(define-key map "9" #'ws-find-marker-9)
(define-key map "a" #'ws-query-replace)
(define-key map "\C-a" #'ws-query-replace)
(define-key map "b" #'ws-goto-block-begin)
(define-key map "\C-b" #'ws-goto-block-begin)
(define-key map "c" #'end-of-buffer)
(define-key map "\C-c" #'end-of-buffer)
(define-key map "d" #'end-of-line)
(define-key map "\C-d" #'end-of-line)
(define-key map "f" #'ws-search)
(define-key map "\C-f" #'ws-search)
(define-key map "k" #'ws-goto-block-end)
(define-key map "\C-k" #'ws-goto-block-end)
(define-key map "l" #'ws-undo)
(define-key map "\C-l" #'ws-undo)
;; (define-key map "p" #'ws-last-cursorp)
;; (define-key map "\C-p" #'ws-last-cursorp)
(define-key map "r" #'beginning-of-buffer)
(define-key map "\C-r" #'beginning-of-buffer)
(define-key map "s" #'beginning-of-line)
(define-key map "\C-s" #'beginning-of-line)
(define-key map "\C-u" #'keyboard-quit)
(define-key map "w" #'ws-last-error)
(define-key map "\C-w" #'ws-last-error)
(define-key map "y" #'ws-kill-eol)
(define-key map "\C-y" #'ws-kill-eol)
(define-key map "\177" #'ws-kill-bol)
map))
(defvar wordstar-mode-map
(let ((map (make-keymap)))
(define-key map "\C-a" #'backward-word)
(define-key map "\C-b" #'fill-paragraph)
(define-key map "\C-c" #'scroll-up-command)
(define-key map "\C-d" #'forward-char)
(define-key map "\C-e" #'previous-line)
(define-key map "\C-f" #'forward-word)
(define-key map "\C-g" #'delete-char)
(define-key map "\C-h" #'backward-char)
(define-key map "\C-i" #'indent-for-tab-command)
(define-key map "\C-j" #'help-for-help)
(define-key map "\C-k" wordstar-C-k-map)
(define-key map "\C-l" #'ws-repeat-search)
(define-key map "\C-n" #'open-line)
(define-key map "\C-o" wordstar-C-o-map)
(define-key map "\C-p" #'quoted-insert)
(define-key map "\C-q" wordstar-C-q-map)
(define-key map "\C-r" #'scroll-down-command)
(define-key map "\C-s" #'backward-char)
(define-key map "\C-t" #'kill-word)
(define-key map "\C-u" #'keyboard-quit)
(define-key map "\C-v" #'overwrite-mode)
(define-key map "\C-w" #'scroll-down-line)
(define-key map "\C-x" #'next-line)
(define-key map "\C-y" #'kill-complete-line)
(define-key map "\C-z" #'scroll-up-line)
map))
;; wordstar-C-j-map not yet implemented
(defvar wordstar-C-j-map nil)
;;;###autoload
(define-minor-mode wordstar-mode
"Minor mode with WordStar-like key bindings.
BUGS:
- Help menus with WordStar commands (C-j just calls help-for-help)
are not implemented
- Options for search and replace
- Show markers (C-k h) is somewhat strange
- Search and replace (C-q a) is only available in forward direction
No key bindings beginning with ESC are installed, they will work
Emacs-like."
:group 'wordstar
:lighter wordstar-mode-lighter
:keymap wordstar-mode-map)
(defun turn-on-wordstar-mode ()
(when (and (not (minibufferp))
(not wordstar-mode))
(wordstar-mode 1)))
(define-globalized-minor-mode global-wordstar-mode wordstar-mode
turn-on-wordstar-mode)
(defun wordstar-center-paragraph ()
"Center each line in the paragraph at or after point.
See `wordstar-center-line' for more info."
(interactive)
(save-excursion
(forward-paragraph)
(or (bolp) (newline 1))
(let ((end (point)))
(backward-paragraph)
(wordstar-center-region (point) end))))
(defun wordstar-center-region (from to)
"Center each line starting in the region.
See `wordstar-center-line' for more info."
(interactive "r")
(if (> from to)
(let ((tem to))
(setq to from from tem)))
(save-excursion
(save-restriction
(narrow-to-region from to)
(goto-char from)
(while (not (eobp))
(wordstar-center-line)
(forward-line 1)))))
(defun wordstar-center-line ()
"Center the line point is on, within the width specified by `fill-column'.
This means adjusting the indentation to match
the distance between the end of the text and `fill-column'."
(interactive)
(save-excursion
(let (line-length)
(beginning-of-line)
(delete-horizontal-space)
(end-of-line)
(delete-horizontal-space)
(setq line-length (current-column))
(beginning-of-line)
(indent-to
(+ left-margin
(/ (- fill-column left-margin line-length) 2))))))
;;;;;;;;;;;
;; wordstar special variables:
(defvar ws-marker-0 nil "Position marker 0 in WordStar mode.")
(defvar ws-marker-1 nil "Position marker 1 in WordStar mode.")
(defvar ws-marker-2 nil "Position marker 2 in WordStar mode.")
(defvar ws-marker-3 nil "Position marker 3 in WordStar mode.")
(defvar ws-marker-4 nil "Position marker 4 in WordStar mode.")
(defvar ws-marker-5 nil "Position marker 5 in WordStar mode.")
(defvar ws-marker-6 nil "Position marker 6 in WordStar mode.")
(defvar ws-marker-7 nil "Position marker 7 in WordStar mode.")
(defvar ws-marker-8 nil "Position marker 8 in WordStar mode.")
(defvar ws-marker-9 nil "Position marker 9 in WordStar mode.")
(defvar ws-block-begin-marker nil "Beginning of \"Block\" in WordStar mode.")
(defvar ws-block-end-marker nil "End of \"Block\" in WordStar mode.")
(defvar ws-search-string nil "String of last search in WordStar mode.")
(defvar ws-search-direction t
"Direction of last search in WordStar mode. t if forward, nil if backward.")
(defvar ws-last-cursorposition nil
"Position before last search etc. in WordStar mode.")
(defvar ws-last-errormessage nil
"Last error message issued by a WordStar mode function.")
;;;;;;;;;;;
;; wordstar special functions:
(defun ws-error (string)
"Report error of a WordStar special function.
Error message is saved in `ws-last-errormessage' for recovery
with C-q w."
(setq ws-last-errormessage string)
(error string))
(defun ws-begin-block ()
"In WordStar mode: Set block begin marker to current cursor position."
(interactive)
(setq ws-block-begin-marker (point-marker))
(message "Block begin marker set"))
(defun ws-show-markers ()
"In WordStar mode: Show block markers."
(interactive)
(if (or ws-block-begin-marker ws-block-end-marker)
(save-excursion
(if ws-block-begin-marker
(progn
(goto-char ws-block-begin-marker)
(message "Block begin marker")
(sit-for 2))
(message "Block begin marker not set")
(sit-for 2))
(if ws-block-end-marker
(progn
(goto-char ws-block-end-marker)
(message "Block end marker")
(sit-for 2))
(message "Block end marker not set"))
(message ""))
(message "Block markers not set")))
(defun ws-indent-block ()
"In WordStar mode: Indent block (not yet implemented)."
(interactive)
(ws-error "Indent block not yet implemented"))
(defun ws-end-block ()
"In WordStar mode: Set block end marker to current cursor position."
(interactive)
(setq ws-block-end-marker (point-marker))
(message "Block end marker set"))
(defun ws-print-block ()
"In WordStar mode: Print block."
(interactive)
(message "Don't do this. Write block to a file (C-k w) and print this file"))
(defun ws-mark-word ()
"In WordStar mode: Mark current word as block."
(interactive)
(save-excursion
(forward-word 1)
(sit-for 1)
(ws-end-block)
(forward-word -1)
(sit-for 1)
(ws-begin-block)))
(defun ws-exdent-block ()
"I don't know what this (C-k u) should do."
(interactive)
(ws-error "This won't be done -- not yet implemented"))
(defun ws-move-block ()
"In WordStar mode: Move block to current cursor position."
(interactive)
(if (and ws-block-begin-marker ws-block-end-marker)
(progn
(kill-region ws-block-begin-marker ws-block-end-marker)
(yank)
(save-excursion
(goto-char (region-beginning))
(setq ws-block-begin-marker (point-marker))
(goto-char (region-end))
(setq ws-block-end-marker (point-marker))))
(ws-error (cond (ws-block-begin-marker "Block end marker not set")
(ws-block-end-marker "Block begin marker not set")
(t "Block markers not set")))))
(defun ws-write-block ()
"In WordStar mode: Write block to file."
(interactive)
(if (and ws-block-begin-marker ws-block-end-marker)
(let ((filename (read-file-name "Write block to file: ")))
(write-region ws-block-begin-marker ws-block-end-marker filename))
(ws-error (cond (ws-block-begin-marker "Block end marker not set")
(ws-block-end-marker "Block begin marker not set")
(t "Block markers not set")))))
(defun ws-delete-block ()
"In WordStar mode: Delete block."
(interactive)
(if (and ws-block-begin-marker ws-block-end-marker)
(progn
(kill-region ws-block-begin-marker ws-block-end-marker)
(setq ws-block-end-marker nil)
(setq ws-block-begin-marker nil))
(ws-error (cond (ws-block-begin-marker "Block end marker not set")
(ws-block-end-marker "Block begin marker not set")
(t "Block markers not set")))))
(defun ws-goto-block-begin ()
"In WordStar mode: Go to block begin marker."
(interactive)
(if ws-block-begin-marker
(progn
(setq ws-last-cursorposition (point-marker))
(goto-char ws-block-begin-marker))
(ws-error "Block begin marker not set")))
(defun ws-search (string)
"In WordStar mode: Search string, remember string for repetition."
(interactive "sSearch for: ")
(message "Forward (f) or backward (b)")
(let ((direction
(read-char)))
(cond ((equal (upcase direction) ?F)
(setq ws-search-string string)
(setq ws-search-direction t)
(setq ws-last-cursorposition (point-marker))
(search-forward string))
((equal (upcase direction) ?B)
(setq ws-search-string string)
(setq ws-search-direction nil)
(setq ws-last-cursorposition (point-marker))
(search-backward string))
(t (keyboard-quit)))))
(defun ws-goto-block-end ()
"In WordStar mode: Go to block end marker."
(interactive)
(if ws-block-end-marker
(progn
(setq ws-last-cursorposition (point-marker))
(goto-char ws-block-end-marker))
(ws-error "Block end marker not set")))
(defun ws-undo ()
"In WordStar mode: Undo and give message about undoing more changes."
(interactive)
(undo)
(message "Repeat C-q l to undo more changes"))
(defun ws-goto-last-cursorposition ()
"In WordStar mode: Go to position before last search."
(interactive)
(if ws-last-cursorposition
(progn
(setq ws-last-cursorposition (point-marker))
(goto-char ws-last-cursorposition))
(ws-error "No last cursor position available")))
(defun ws-last-error ()
"In WordStar mode: repeat last error message.
This will only work for errors raised by WordStar mode functions."
(interactive)
(if ws-last-errormessage
(message "%s" ws-last-errormessage)
(message "No WordStar error yet")))
(defun ws-kill-eol ()
"In WordStar mode: Kill to end of line (like WordStar, not like Emacs)."
(interactive)
(let ((p (point)))
(end-of-line)
(kill-region p (point))))
(defun ws-kill-bol ()
"In WordStar mode: Kill to beginning of line (like WordStar, not like Emacs)."
(interactive)
(let ((p (point)))
(beginning-of-line)
(kill-region (point) p)))
(defun kill-complete-line ()
"Kill the complete line."
(interactive)
(beginning-of-line)
(if (eobp) (error "End of buffer"))
(let ((beg (point)))
(forward-line 1)
(kill-region beg (point))))
(defun ws-repeat-search ()
"In WordStar mode: Repeat last search."
(interactive)
(setq ws-last-cursorposition (point-marker))
(if ws-search-string
(if ws-search-direction
(search-forward ws-search-string)
(search-backward ws-search-string))
(ws-error "No search to repeat")))
(defun ws-query-replace (from to)
"In WordStar mode: Search string, remember string for repetition."
(interactive "sReplace: \n\
sWith: " )
(setq ws-search-string from)
(setq ws-search-direction t)
(setq ws-last-cursorposition (point-marker))
(query-replace from to))
(defun ws-copy-block ()
"In WordStar mode: Copy block to current cursor position."
(interactive)
(if (and ws-block-begin-marker ws-block-end-marker)
(progn
(copy-region-as-kill ws-block-begin-marker ws-block-end-marker)
(yank)
(save-excursion
(goto-char (region-beginning))
(setq ws-block-begin-marker (point-marker))
(goto-char (region-end))
(setq ws-block-end-marker (point-marker))))
(ws-error (cond (ws-block-begin-marker "Block end marker not set")
(ws-block-end-marker "Block begin marker not set")
(t "Block markers not set")))))
(defmacro ws-set-marker (&rest indices)
(let (n forms)
(while indices
(setq n (pop indices))
(push `(defun ,(intern (format "ws-set-marker-%d" n)) ()
,(format "In WordStar mode: Set marker %d to current cursor position" n)
(interactive)
(setq ,(intern (format "ws-marker-%d" n)) (point-marker))
(message ,(format "Marker %d set" n)))
forms))
`(progn ,@(nreverse forms))))
(ws-set-marker 0 1 2 3 4 5 6 7 8 9)
(defmacro ws-find-marker (&rest indices)
(let (n forms)
(while indices
(setq n (pop indices))
(push `(defun ,(intern (format "ws-find-marker-%d" n)) ()
,(format "In WordStar mode: Go to marker %d." n)
(interactive)
(if ,(intern (format "ws-marker-%d" n))
(progn (setq ws-last-cursorposition (point-marker))
(goto-char ,(intern (format "ws-marker-%d" n))))
(ws-error ,(format "Marker %d not set" n))))
forms))
`(progn ,@(nreverse forms))))
(ws-find-marker 0 1 2 3 4 5 6 7 8 9)
(provide 'ws-mode)
;;; ws-mode.el ends here
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