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+;; scribe mode, and its ideosyncratic commands.
+;; Copyright (C) 1985 Free Software Foundation, Inc.
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs is free software; you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation; either version 1, or (at your option)
+;; any later version.
+
+;; GNU Emacs is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with GNU Emacs; see the file COPYING. If not, write to
+;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+
+
+(defvar scribe-mode-syntax-table nil
+ "Syntax table used while in scribe mode.")
+
+(defvar scribe-mode-abbrev-table nil
+ "Abbrev table used while in scribe mode.")
+
+(defvar scribe-fancy-paragraphs nil
+ "*Non-NIL makes Scribe mode use a different style of paragraph separation.")
+
+(defvar scribe-electric-quote nil
+ "*Non-NIL makes insert of double quote use `` or '' depending on context.")
+
+(defvar scribe-electric-parenthesis nil
+ "*Non-NIL makes parenthesis char ( (]}> ) automatically insert its close
+if typed after an @Command form.")
+
+(defconst scribe-open-parentheses "[({<"
+ "Open parenthesis characters for Scribe.")
+
+(defconst scribe-close-parentheses "])}>"
+ "Close parenthesis characters for Scribe. These should match up with
+scribe-open-parenthesis.")
+
+(if (null scribe-mode-syntax-table)
+ (let ((st (syntax-table)))
+ (unwind-protect
+ (progn
+ (setq scribe-mode-syntax-table (copy-syntax-table
+ text-mode-syntax-table))
+ (set-syntax-table scribe-mode-syntax-table)
+ (modify-syntax-entry ?\" " ")
+ (modify-syntax-entry ?\\ " ")
+ (modify-syntax-entry ?@ "w ")
+ (modify-syntax-entry ?< "(> ")
+ (modify-syntax-entry ?> ")< ")
+ (modify-syntax-entry ?[ "(] ")
+ (modify-syntax-entry ?] ")[ ")
+ (modify-syntax-entry ?{ "(} ")
+ (modify-syntax-entry ?} "){ ")
+ (modify-syntax-entry ?' "w "))
+ (set-syntax-table st))))
+
+(defvar scribe-mode-map nil)
+
+(if scribe-mode-map
+ nil
+ (setq scribe-mode-map (make-sparse-keymap))
+ (define-key scribe-mode-map "\t" 'scribe-tab)
+ (define-key scribe-mode-map "\e\t" 'tab-to-tab-stop)
+ (define-key scribe-mode-map "\es" 'center-line)
+ (define-key scribe-mode-map "\e}" 'up-list)
+ (define-key scribe-mode-map "\eS" 'center-paragraph)
+ (define-key scribe-mode-map "\"" 'scribe-insert-quote)
+ (define-key scribe-mode-map "(" 'scribe-parenthesis)
+ (define-key scribe-mode-map "[" 'scribe-parenthesis)
+ (define-key scribe-mode-map "{" 'scribe-parenthesis)
+ (define-key scribe-mode-map "<" 'scribe-parenthesis)
+ (define-key scribe-mode-map "\^cc" 'scribe-chapter)
+ (define-key scribe-mode-map "\^cS" 'scribe-section)
+ (define-key scribe-mode-map "\^cs" 'scribe-subsection)
+ (define-key scribe-mode-map "\^ce" 'scribe-insert-environment)
+ (define-key scribe-mode-map "\^c\^e" 'scribe-bracket-region-be)
+ (define-key scribe-mode-map "\^c[" 'scribe-begin)
+ (define-key scribe-mode-map "\^c]" 'scribe-end)
+ (define-key scribe-mode-map "\^ci" 'scribe-italicize-word)
+ (define-key scribe-mode-map "\^cb" 'scribe-bold-word)
+ (define-key scribe-mode-map "\^cu" 'scribe-underline-word))
+
+(defun scribe-mode ()
+ "Major mode for editing files of Scribe (a text formatter) source.
+Scribe-mode is similar text-mode, with a few extra commands added.
+\\{scribe-mode-map}
+
+Interesting variables:
+
+scribe-fancy-paragraphs
+ Non-nil makes Scribe mode use a different style of paragraph separation.
+
+scribe-electric-quote
+ Non-nil makes insert of double quote use `` or '' depending on context.
+
+scribe-electric-parenthesis
+ Non-nil makes an open-parenthesis char (one of `([<{')
+ automatically insert its close if typed after an @Command form."
+ (interactive)
+ (kill-all-local-variables)
+ (use-local-map scribe-mode-map)
+ (setq mode-name "Scribe")
+ (setq major-mode 'scribe-mode)
+ (define-abbrev-table 'scribe-mode-abbrev-table ())
+ (setq local-abbrev-table scribe-mode-abbrev-table)
+ (make-local-variable 'comment-start)
+ (setq comment-start "@Comment[")
+ (make-local-variable 'comment-start-skip)
+ (setq comment-start-skip (concat "@Comment[" scribe-open-parentheses "]"))
+ (make-local-variable 'comment-column)
+ (setq comment-column 0)
+ (make-local-variable 'comment-end)
+ (setq comment-end "]")
+ (make-local-variable 'paragraph-start)
+ (setq paragraph-start (concat "\\(^[\n\f]\\)\\|\\(^@\\w+["
+ scribe-open-parentheses
+ "].*["
+ scribe-close-parentheses
+ "]$\\)"))
+ (make-local-variable 'paragraph-separate)
+ (setq paragraph-separate (if scribe-fancy-paragraphs
+ paragraph-start "^$"))
+ (make-local-variable 'compile-command)
+ (setq compile-command (concat "scribe " (buffer-file-name)))
+ (set-syntax-table scribe-mode-syntax-table)
+ (run-hooks 'text-mode-hook 'scribe-mode-hook))
+
+(defun scribe-tab ()
+ (interactive)
+ (insert "@\\"))
+
+;; This algorithm could probably be improved somewhat.
+;; Right now, it loses seriously...
+
+(defun scribe ()
+ "Run Scribe on the current buffer."
+ (interactive)
+ (call-interactively 'compile))
+
+(defun scribe-envelop-word (string count)
+ "Surround current word with Scribe construct @STRING[...]. COUNT
+specifies how many words to surround. A negative count means to skip
+backward."
+ (let ((spos (point)) (epos (point)) (ccoun 0) noparens)
+ (if (not (zerop count))
+ (progn (if (= (char-syntax (preceding-char)) ?w)
+ (forward-sexp (min -1 count)))
+ (setq spos (point))
+ (if (looking-at (concat "@\\w[" scribe-open-parentheses "]"))
+ (forward-char 2)
+ (goto-char epos)
+ (skip-chars-backward "\\W")
+ (forward-char -1))
+ (forward-sexp (max count 1))
+ (setq epos (point))))
+ (goto-char spos)
+ (while (and (< ccoun (length scribe-open-parentheses))
+ (save-excursion
+ (or (search-forward (char-to-string
+ (aref scribe-open-parentheses ccoun))
+ epos t)
+ (search-forward (char-to-string
+ (aref scribe-close-parentheses ccoun))
+ epos t)))
+ (setq ccoun (1+ ccoun))))
+ (if (>= ccoun (length scribe-open-parentheses))
+ (progn (goto-char epos)
+ (insert "@end(" string ")")
+ (goto-char spos)
+ (insert "@begin(" string ")"))
+ (goto-char epos)
+ (insert (aref scribe-close-parentheses ccoun))
+ (goto-char spos)
+ (insert "@" string (aref scribe-open-parentheses ccoun))
+ (goto-char epos)
+ (forward-char 3)
+ (skip-chars-forward scribe-close-parentheses))))
+
+(defun scribe-underline-word (count)
+ "Underline COUNT words around point by means of Scribe constructs."
+ (interactive "p")
+ (scribe-envelop-word "u" count))
+
+(defun scribe-bold-word (count)
+ "Boldface COUNT words around point by means of Scribe constructs."
+ (interactive "p")
+ (scribe-envelop-word "b" count))
+
+(defun scribe-italicize-word (count)
+ "Italicize COUNT words around point by means of Scribe constructs."
+ (interactive "p")
+ (scribe-envelop-word "i" count))
+
+(defun scribe-begin ()
+ (interactive)
+ (insert "\n")
+ (forward-char -1)
+ (scribe-envelop-word "Begin" 0)
+ (re-search-forward (concat "[" scribe-open-parentheses "]")))
+
+(defun scribe-end ()
+ (interactive)
+ (insert "\n")
+ (forward-char -1)
+ (scribe-envelop-word "End" 0)
+ (re-search-forward (concat "[" scribe-open-parentheses "]")))
+
+(defun scribe-chapter ()
+ (interactive)
+ (insert "\n")
+ (forward-char -1)
+ (scribe-envelop-word "Chapter" 0)
+ (re-search-forward (concat "[" scribe-open-parentheses "]")))
+
+(defun scribe-section ()
+ (interactive)
+ (insert "\n")
+ (forward-char -1)
+ (scribe-envelop-word "Section" 0)
+ (re-search-forward (concat "[" scribe-open-parentheses "]")))
+
+(defun scribe-subsection ()
+ (interactive)
+ (insert "\n")
+ (forward-char -1)
+ (scribe-envelop-word "SubSection" 0)
+ (re-search-forward (concat "[" scribe-open-parentheses "]")))
+
+(defun scribe-bracket-region-be (env min max)
+ (interactive "sEnvironment: \nr")
+ (save-excursion
+ (goto-char max)
+ (insert "@end(" env ")\n")
+ (goto-char min)
+ (insert "@begin(" env ")\n")))
+
+(defun scribe-insert-environment (env)
+ (interactive "sEnvironment: ")
+ (scribe-bracket-region-be env (point) (point))
+ (forward-line 1)
+ (insert ?\n)
+ (forward-char -1))
+
+(defun scribe-insert-quote (count)
+ "If scribe-electric-quote is non-NIL, insert ``, '' or \" according
+to preceding character. With numeric arg N, always insert N \" characters.
+Else just insert \"."
+ (interactive "P")
+ (if (or count (not scribe-electric-quote))
+ (self-insert-command (prefix-numeric-value count))
+ (let (lastfore lastback lastquote)
+ (insert
+ (cond
+ ((= (preceding-char) ?\\) ?\")
+ ((bobp) "``")
+ (t
+ (setq lastfore (save-excursion (and (search-backward
+ "``" (- (point) 1000) t)
+ (point)))
+ lastback (save-excursion (and (search-backward
+ "''" (- (point) 1000) t)
+ (point)))
+ lastquote (save-excursion (and (search-backward
+ "\"" (- (point) 100) t)
+ (point))))
+ (if (not lastquote)
+ (cond ((not lastfore) "``")
+ ((not lastback) "''")
+ ((> lastfore lastback) "''")
+ (t "``"))
+ (cond ((and (not lastback) (not lastfore)) "\"")
+ ((and lastback (not lastfore) (> lastquote lastback)) "\"")
+ ((and lastback (not lastfore) (> lastback lastquote)) "``")
+ ((and lastfore (not lastback) (> lastquote lastfore)) "\"")
+ ((and lastfore (not lastback) (> lastfore lastquote)) "''")
+ ((and (> lastquote lastfore) (> lastquote lastback)) "\"")
+ ((> lastfore lastback) "''")
+ (t "``")))))))))
+
+(defun scribe-parenthesis (count)
+ "If scribe-electric-parenthesis is non-NIL, insertion of an open-parenthesis
+character inserts the following close parenthesis character if the
+preceding text is of the form @Command."
+ (interactive "P")
+ (self-insert-command (prefix-numeric-value count))
+ (let (at-command paren-char point-save)
+ (if (or count (not scribe-electric-parenthesis))
+ nil
+ (save-excursion
+ (forward-char -1)
+ (setq point-save (point))
+ (skip-chars-backward (concat "^ \n\t\f" scribe-open-parentheses))
+ (setq at-command (and (equal (following-char) ?@)
+ (/= (point) (1- point-save)))))
+ (if (and at-command
+ (setq paren-char
+ (string-match (regexp-quote
+ (char-to-string (preceding-char)))
+ scribe-open-parentheses)))
+ (save-excursion
+ (insert (aref scribe-close-parentheses paren-char)))))))
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