;;; tpu-edt.el --- Emacs emulating TPU emulating EDT
-;; Copyright (C) 1993, 1994, 1995 Free Software Foundation, Inc.
+;; Copyright (C) 1993, 1994, 1995, 2000 Free Software Foundation, Inc.
;; Author: Rob Riepel <riepel@networking.stanford.edu>
;; Maintainer: Rob Riepel <riepel@networking.stanford.edu>
-;; Version: 4.2
+;; Version: 4.5
;; Keywords: emulations
;; This file is part of GNU Emacs.
;; In some cases, Emacs doesn't support text highlighting, so selected
;; regions are not shown in inverse video. Emacs uses the concept of "the
;; mark". The mark is set at one end of a selected region; the cursor is
-;; at the other. The letter "M" appears in the mode line when the mark is
-;; set. The native emacs command ^X^X (Control-X twice) exchanges the
-;; cursor with the mark; this provides a handy way to find the location of
-;; the mark.
+;; at the other. In cases where the selected region cannot be shown in
+;; inverse video an at sign (@) appears in the mode line when mark is set.
+;; The native emacs command ^X^X (Control-X twice) exchanges the cursor
+;; with the mark; this provides a handy way to find the location of the
+;; mark.
;; In TPU the cursor can be either bound or free. Bound means the cursor
;; cannot wander outside the text of the file being edited. Free means
;; (tpu-edt)
;; ; Set scroll margins 10% (top) and 15% (bottom).
-;; (tpu-set-scroll-margins "10%" "15%")
+;; (tpu-set-scroll-margins "10%" "15%")
;; ; Load the vtxxx terminal control functions.
;; (load "vt-control" t)
;;; Code:
+(defgroup tpu nil
+ "Emacs emulating TPU emulating EDT."
+ :prefix "tpu-"
+ :group 'emulations)
+
;;;
;;; Version Information
;;;
-(defconst tpu-version "4.2" "TPU-edt version number.")
+(defconst tpu-version "4.5" "TPU-edt version number.")
;;;
;;; User Configurable Variables
;;;
-(defconst tpu-have-ispell t
- "*If non-nil (default), TPU-edt uses ispell for spell checking.")
+(defcustom tpu-have-ispell t
+ "*If non-nil (default), TPU-edt uses ispell for spell checking."
+ :type 'boolean
+ :group 'tpu)
-(defconst tpu-kill-buffers-silently nil
- "*If non-nil, TPU-edt kills modified buffers without asking.")
+(defcustom tpu-kill-buffers-silently nil
+ "*If non-nil, TPU-edt kills modified buffers without asking."
+ :type 'boolean
+ :group 'tpu)
-(defvar tpu-percent-scroll 75
- "*Percentage of the screen to scroll for next/previous screen commands.")
+(defcustom tpu-percent-scroll 75
+ "*Percentage of the screen to scroll for next/previous screen commands."
+ :type 'integer
+ :group 'tpu)
-(defvar tpu-pan-columns 16
- "*Number of columns the tpu-pan functions scroll left or right.")
+(defcustom tpu-pan-columns 16
+ "*Number of columns the tpu-pan functions scroll left or right."
+ :type 'integer
+ :group 'tpu)
;;;
"If non-nil, TPU-edt is searching in the forward direction.")
(defvar tpu-search-last-string ""
"Last text searched for by the TPU-edt search commands.")
+(defvar tpu-search-overlay (make-overlay 1 1)
+ "Search highlight overlay.")
+(overlay-put tpu-search-overlay 'face 'bold)
+
+(defvar tpu-replace-overlay (make-overlay 1 1)
+ "Replace highlight overlay.")
+(overlay-put tpu-replace-overlay 'face 'highlight)
(defvar tpu-regexp-p nil
"If non-nil, TPU-edt uses regexp search and replace routines.")
;;;
;;; Mode Line - Modify the mode line to show the following
;;;
-;;; o If the mark is set.
+;;; o Mark state.
;;; o Direction of motion.
;;; o Active rectangle mode.
+;;; o Active auto indent mode.
;;;
-(defvar tpu-original-mode-line mode-line-format)
(defvar tpu-original-mm-alist minor-mode-alist)
-(defvar tpu-mark-flag " ")
+(defvar tpu-mark-flag "")
(make-variable-buffer-local 'tpu-mark-flag)
(defun tpu-set-mode-line (for-tpu)
- "Set the mode for TPU-edt, or reset it to default Emacs."
+ "Set ``minor-mode-alist'' for TPU-edt, or reset it to default Emacs."
(cond ((not for-tpu)
- (setq mode-line-format tpu-original-mode-line)
- (setq minor-mode-alist tpu-original-mm-alist))
+ (setq minor-mode-alist tpu-original-mm-alist))
(t
- (setq-default mode-line-format
- (list (purecopy "-")
- 'mode-line-mule-info
- 'mode-line-modified
- 'mode-line-frame-identification
- 'mode-line-buffer-identification
- (purecopy " ")
- 'global-mode-string
- (purecopy " ")
- 'tpu-mark-flag
- (purecopy " %[(")
- 'mode-name 'mode-line-process 'minor-mode-alist
- (purecopy "%n")
- (purecopy ")%]--")
- (purecopy '(line-number-mode "L%l--"))
- (purecopy '(column-number-mode "C%c--"))
- (purecopy '(-3 . "%p"))
- (purecopy "-%-")))
(or (assq 'tpu-newline-and-indent-p minor-mode-alist)
(setq minor-mode-alist
(cons '(tpu-newline-and-indent-p
(or (assq 'tpu-direction-string minor-mode-alist)
(setq minor-mode-alist
(cons '(tpu-direction-string tpu-direction-string)
+ minor-mode-alist)))
+ (or (assq 'tpu-mark-flag minor-mode-alist)
+ (setq minor-mode-alist
+ (cons '(tpu-mark-flag tpu-mark-flag)
minor-mode-alist))))))
(defun tpu-update-mode-line nil
"Make sure mode-line in the current buffer reflects all changes."
- (setq tpu-mark-flag (if (tpu-mark) "M" " "))
+ (setq tpu-mark-flag (if transient-mark-mode "" (if (tpu-mark) " @" " ")))
(cond (tpu-emacs19-p (force-mode-line-update))
(t (set-buffer-modified-p (buffer-modified-p)) (sit-for 0))))
(defun tpu-reset-screen-size (height width)
"Sets the screen size."
(interactive "nnew screen height: \nnnew screen width: ")
- (set-screen-height height)
- (set-screen-width width))
+ (set-frame-height (selected-frame) height)
+ (set-frame-width (selected-frame) width))
(defun tpu-toggle-newline-and-indent nil
"Toggle between 'newline and indent' and 'simple newline'."
(defun tpu-include (file)
"TPU-like include file"
(interactive "fInclude file: ")
- (save-excursion
- (insert-file file)
- (message "")))
+ (insert-file-contents file)
+ (message ""))
(defun tpu-get (file)
"TPU-like get file"
(interactive "FFile to get: ")
- (find-file file))
+ (find-file file find-file-wildcards))
(defun tpu-what-line nil
"Tells what line the point is on,
(if (eobp)
(message "You are at the End of Buffer. The last line is %d."
(count-lines 1 (point-max)))
- (message "Line %d of %d"
- (count-lines 1 (1+ (point)))
- (count-lines 1 (point-max)))))
+ (let* ((cur (count-lines 1 (1+ (point))))
+ (max (count-lines 1 (point-max)))
+ (pct (/ (* 100 (+ cur (/ max 200))) max)))
+ (message "You are on line %d out of %d (%d%%)." cur max pct))))
(defun tpu-exit nil
"Exit the way TPU does, save current buffer and ask about others."
;;; Command and Function Aliases
;;;
;;;###autoload
-(fset 'tpu-edt-mode 'tpu-edt-on)
-(fset 'TPU-EDT-MODE 'tpu-edt-on)
+(defalias 'tpu-edt-mode 'tpu-edt-on)
+(defalias 'TPU-EDT-MODE 'tpu-edt-on)
;;;###autoload
-(fset 'tpu-edt 'tpu-edt-on)
-(fset 'TPU-EDT 'tpu-edt-on)
+(defalias 'tpu-edt 'tpu-edt-on)
+(defalias 'TPU-EDT 'tpu-edt-on)
+
+;; Note: The following functions have no `tpu-' prefix. This is unavoidable.
+;; The real TPU/edt editor has interactive commands with these names,
+;; so tpu-edt.el users expect things like M-x exit RET and M-x help RET
+;; to work. Therefore it really is necessary to define these functions,
+;; even in cases where they redefine existing Emacs functions.
-(fset 'exit 'tpu-exit)
-(fset 'EXIT 'tpu-exit)
+(defalias 'exit 'tpu-exit)
+(defalias 'EXIT 'tpu-exit)
-(fset 'Get 'tpu-get)
-(fset 'GET 'tpu-get)
+(defalias 'Get 'tpu-get)
+(defalias 'GET 'tpu-get)
-(fset 'include 'tpu-include)
-(fset 'INCLUDE 'tpu-include)
+(defalias 'include 'tpu-include)
+(defalias 'INCLUDE 'tpu-include)
-(fset 'quit 'tpu-quit)
-(fset 'QUIT 'tpu-quit)
+(defalias 'quit 'tpu-quit)
+(defalias 'QUIT 'tpu-quit)
-(fset 'spell 'tpu-spell-check)
-(fset 'SPELL 'tpu-spell-check)
+(defalias 'spell 'tpu-spell-check)
+(defalias 'SPELL 'tpu-spell-check)
-(fset 'what\ line 'tpu-what-line)
-(fset 'WHAT\ LINE 'tpu-what-line)
+(defalias 'what\ line 'tpu-what-line)
+(defalias 'WHAT\ LINE 'tpu-what-line)
-(fset 'replace 'tpu-lm-replace)
-(fset 'REPLACE 'tpu-lm-replace)
+(defalias 'replace 'tpu-lm-replace)
+(defalias 'REPLACE 'tpu-lm-replace)
-;; Apparently TPU users really expect to do M-x help RET to get help.
-;; So it is really necessary to redefine this.
-(fset 'help 'tpu-help)
-(fset 'HELP 'tpu-help)
+(defalias 'help 'tpu-help)
+(defalias 'HELP 'tpu-help)
-(fset 'set\ cursor\ free 'tpu-set-cursor-free)
-(fset 'SET\ CURSOR\ FREE 'tpu-set-cursor-free)
+(defalias 'set\ cursor\ free 'tpu-set-cursor-free)
+(defalias 'SET\ CURSOR\ FREE 'tpu-set-cursor-free)
-(fset 'set\ cursor\ bound 'tpu-set-cursor-bound)
-(fset 'SET\ CURSOR\ BOUND 'tpu-set-cursor-bound)
+(defalias 'set\ cursor\ bound 'tpu-set-cursor-bound)
+(defalias 'SET\ CURSOR\ BOUND 'tpu-set-cursor-bound)
-(fset 'set\ scroll\ margins 'tpu-set-scroll-margins)
-(fset 'SET\ SCROLL\ MARGINS 'tpu-set-scroll-margins)
+(defalias 'set\ scroll\ margins 'tpu-set-scroll-margins)
+(defalias 'SET\ SCROLL\ MARGINS 'tpu-set-scroll-margins)
+
+;; Real TPU error messages end in periods.
+;; Define this to avoid openly flouting Emacs coding standards.
+(defalias 'tpu-error 'error)
;; Around emacs version 18.57, function line-move was renamed to
(scroll-other-window -8)
(error nil)))
(t
+ (forward-line -1)
(backward-page)
(forward-line 1)
(tpu-line-to-top-of-window))))
(interactive)
(let ((list (tpu-make-file-buffer-list (buffer-list))))
(setq list (delq (current-buffer) list))
- (if (not list) (error "No other buffers."))
+ (if (not list) (tpu-error "No other buffers."))
(switch-to-buffer (car (reverse list)))))
(defun tpu-make-file-buffer-list (buffer-list)
(read-from-minibuffer re-prompt nil nil nil 'tpu-regexp-prompt-hist)
(read-string re-prompt))))
+(defun tpu-search-highlight nil
+ (if (tpu-check-match)
+ (move-overlay tpu-search-overlay
+ (tpu-match-beginning) (tpu-match-end) (current-buffer))
+ (unless (equal (overlay-start tpu-search-overlay)
+ (overlay-end tpu-search-overlay))
+ (move-overlay tpu-search-overlay 1 1 (current-buffer)))))
+
(defun tpu-search nil
"Search for a string or regular expression.
The search is performed in the current direction."
(defun tpu-unselect (&optional quiet)
"Removes the mark to unselect the current region."
(interactive "P")
+ (deactivate-mark)
(setq mark-ring nil)
(tpu-set-mark nil)
(tpu-update-mode-line)
(delete-region beg end)
(tpu-unset-match)))
(t
- (error "No selection active."))))
+ (tpu-error "No selection active."))))
(defun tpu-store-text nil
"Copy the selected region to the cut buffer without deleting it.
(buffer-substring (tpu-match-beginning) (tpu-match-end)))
(tpu-unset-match))
(t
- (error "No selection active."))))
+ (tpu-error "No selection active."))))
(defun tpu-cut (arg)
"Copy selected region to the cut buffer. In the absence of an
(if (not arg) (delete-region beg end))
(tpu-unset-match)))
(t
- (error "No selection active."))))
+ (tpu-error "No selection active."))))
(defun tpu-delete-current-line (num)
"Delete one or specified number of lines after point.
(defun tpu-delete-to-eol (num)
"Delete text up to end of line.
-With argument, delete up to to Nth line-end past point.
+With argument, delete up to the Nth line-end past point.
They are saved for the TPU-edt undelete-lines command."
(interactive "p")
(let ((beg (point)))
(defun tpu-delete-to-bol (num)
"Delete text back to beginning of line.
-With argument, delete up to to Nth line-end past point.
+With argument, delete up to the Nth line-end past point.
They are saved for the TPU-edt undelete-lines command."
(interactive "p")
(let ((beg (point)))
(not case-replace) (not tpu-regexp-p))
(tpu-unset-match)))
(t
- (error "No selection active."))))
+ (tpu-error "No selection active."))))
(defun tpu-substitute (num)
"Replace the selected region with the contents of the cut buffer, and
(tpu-search-internal-core tpu-search-last-string)))
(setq num (1- num))))
(t
- (error "No selection active."))))
+ (tpu-error "No selection active."))))
(defun tpu-lm-replace (from to)
"Interactively search for OLD-string and substitute NEW-string."
(let ((doit t) (strings 0))
;; Can't replace null strings
- (if (string= "" from) (error "No string to replace."))
+ (if (string= "" from) (tpu-error "No string to replace."))
;; Find the first occurrence
(tpu-set-search)
;; Loop on replace question - yes, no, all, last, or quit.
(while doit
(if (not (tpu-check-match)) (setq doit nil)
- (progn (message "Replace? Type Yes, No, All, Last, or Quit: ")
- (let ((ans (read-char)))
-
- (cond ((or (= ans ?y) (= ans ?Y) (= ans ?\r) (= ans ?\ ))
- (let ((beg (point)))
- (replace-match to (not case-replace) (not tpu-regexp-p))
- (setq strings (1+ strings))
- (if tpu-searching-forward (forward-char -1) (goto-char beg)))
- (tpu-search-internal from t))
-
- ((or (= ans ?n) (= ans ?N) (= ans ?\C-?))
- (tpu-search-internal from t))
-
- ((or (= ans ?a) (= ans ?A))
- (save-excursion
- (let ((beg (point)))
- (replace-match to (not case-replace) (not tpu-regexp-p))
- (setq strings (1+ strings))
- (if tpu-searching-forward (forward-char -1) (goto-char beg)))
- (tpu-search-internal-core from t)
- (while (tpu-check-match)
- (let ((beg (point)))
- (replace-match to (not case-replace) (not tpu-regexp-p))
- (setq strings (1+ strings))
- (if tpu-searching-forward (forward-char -1) (goto-char beg)))
- (tpu-search-internal-core from t)))
- (setq doit nil))
-
- ((or (= ans ?l) (= ans ?L))
- (let ((beg (point)))
- (replace-match to (not case-replace) (not tpu-regexp-p))
- (setq strings (1+ strings))
- (if tpu-searching-forward (forward-char -1) (goto-char beg)))
- (setq doit nil))
-
- ((or (= ans ?q) (= ans ?Q))
- (setq doit nil)))))))
-
- (message "Replaced %s occurrence%s." strings
- (if (not (= 1 strings)) "s" ""))))
+ (progn
+ (move-overlay tpu-replace-overlay
+ (tpu-match-beginning) (tpu-match-end) (current-buffer))
+ (message "Replace? Type Yes, No, All, Last, or Quit: ")
+ (let ((ans (read-char)))
+
+ (cond ((or (= ans ?y) (= ans ?Y) (= ans ?\r) (= ans ?\ ))
+ (let ((beg (point)))
+ (replace-match to (not case-replace) (not tpu-regexp-p))
+ (setq strings (1+ strings))
+ (if tpu-searching-forward (forward-char -1) (goto-char beg)))
+ (tpu-search-internal from t))
+
+ ((or (= ans ?n) (= ans ?N) (= ans ?\C-?))
+ (tpu-search-internal from t))
+
+ ((or (= ans ?a) (= ans ?A))
+ (save-excursion
+ (let ((beg (point)))
+ (replace-match to (not case-replace) (not tpu-regexp-p))
+ (setq strings (1+ strings))
+ (if tpu-searching-forward (forward-char -1) (goto-char beg)))
+ (tpu-search-internal-core from t)
+ (while (tpu-check-match)
+ (let ((beg (point)))
+ (replace-match to (not case-replace) (not tpu-regexp-p))
+ (setq strings (1+ strings))
+ (if tpu-searching-forward (forward-char -1) (goto-char beg)))
+ (tpu-search-internal-core from t)))
+ (setq doit nil))
+
+ ((or (= ans ?l) (= ans ?L))
+ (let ((beg (point)))
+ (replace-match to (not case-replace) (not tpu-regexp-p))
+ (setq strings (1+ strings))
+ (if tpu-searching-forward (forward-char -1) (goto-char beg)))
+ (setq doit nil))
+
+ ((or (= ans ?q) (= ans ?Q))
+ (tpu-unset-match)
+ (setq doit nil)))))))
+
+ (move-overlay tpu-replace-overlay 1 1 (current-buffer))
+ (message "Replaced %s occurrence%s." strings (if (not (= 1 strings)) "s" ""))))
(defun tpu-emacs-replace (&optional dont-ask)
"A TPU-edt interface to the emacs replace functions. If TPU-edt is
or each line in the entire buffer if no region is selected."
(interactive
(list (tpu-string-prompt "String to add: " 'tpu-add-at-bol-hist)))
- (if (string= "" text) (error "No string specified."))
+ (if (string= "" text) (tpu-error "No string specified."))
(cond ((tpu-mark)
(save-excursion
(if (> (point) (tpu-mark)) (exchange-point-and-mark))
or each line of the entire buffer if no region is selected."
(interactive
(list (tpu-string-prompt "String to add: " 'tpu-add-at-eol-hist)))
- (if (string= "" text) (error "No string specified."))
+ (if (string= "" text) (tpu-error "No string specified."))
(cond ((tpu-mark)
(save-excursion
(if (> (point) (tpu-mark)) (exchange-point-and-mark))
(defun tpu-trim-line-ends nil
"Removes trailing whitespace from every line in the buffer."
(interactive)
- (picture-clean))
+ (save-match-data
+ (save-excursion
+ (goto-char (point-min))
+ (while (re-search-forward "[ \t][ \t]*$" nil t)
+ (delete-region (match-beginning 0) (match-end 0))))))
;;;
Accepts a prefix argument for the number of lines to move."
(interactive "p")
(backward-char 1)
- (forward-line (- 1 num)))
+ (forward-visible-line (- 1 num)))
(defun tpu-end-of-line (num)
"Move to the next end of line in the current direction.
"Move point to ARG percentage of the buffer."
(interactive "NGoto-percentage: ")
(if (or (> perc 100) (< perc 0))
- (error "Percentage %d out of range 0 < percent < 100" perc)
+ (tpu-error "Percentage %d out of range 0 < percent < 100." perc)
(goto-char (/ (* (point-max) perc) 100))))
(defun tpu-beginning-of-window nil
(tpu-set-search)
(tpu-update-mode-line))
+(defun tpu-toggle-direction nil
+ "Change the current TPU direction."
+ (interactive)
+ (if tpu-advance (tpu-backup-direction) (tpu-advance-direction)))
+
;;;
;;; Define keymaps
(and (tpu-y-or-n-p "Copy key definitions to the new file now? ")
(condition-case conditions
(copy-file oldname newname)
- (error (message "Sorry, couldn't copy - %s" (cdr conditions)))))
+ (tpu-error (message "Sorry, couldn't copy - %s." (cdr conditions)))))
(kill-buffer "*TPU-Notice*")))
;; we use picture-mode functions
(require 'picture)
(tpu-set-control-keys)
- (cond (tpu-emacs19-p
- (and window-system (tpu-load-xkeys nil))
- (tpu-arrow-history))
- (t
- ;; define ispell functions
- (autoload 'ispell-word "ispell" "Check spelling of word at or before point" t)
- (autoload 'ispell-complete-word "ispell" "Complete word at or before point" t)
- (autoload 'ispell-buffer "ispell" "Check spelling of entire buffer" t)
- (autoload 'ispell-region "ispell" "Check spelling of region" t)))
+ (and window-system (tpu-load-xkeys nil))
+ (tpu-arrow-history)
+ (transient-mark-mode t)
+ (add-hook 'post-command-hook 'tpu-search-highlight)
(tpu-set-mode-line t)
(tpu-advance-direction)
;; set page delimiter, display line truncation, and scrolling like TPU
(cond
(tpu-edt-mode
(tpu-reset-control-keys nil)
+ (remove-hook 'post-command-hook 'tpu-search-highlight)
(tpu-set-mode-line nil)
(setq-default page-delimiter "^\f")
(setq-default truncate-lines nil)
(provide 'tpu-edt)
+;;; arch-tag: f3dfe61c-2cbd-4f73-b9cc-eb215020b857
;;; tpu-edt.el ends here
HCoop / bpt / emacs.git / blobdiff