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- ;;; case-table.el --- code to extend the character set and support case tables.
-
- ;; Copyright (C) 1988, 1993, 1997 Free Software Foundation, Inc.
-
- ;; Author: Howard Gayle
- ;; Maintainer: XEmacs Development Team
- ;; Keywords: i18n
-
- ;; This file is part of XEmacs.
-
- ;; XEmacs 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 2, or (at your option)
- ;; any later version.
-
- ;; XEmacs 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 XEmacs; see the file COPYING. If not, write to the
- ;; Free Software Foundation, 59 Temple Place - Suite 330,
- ;; Boston, MA 02111-1307, USA.
-
- ;;; Synched up with: Not synched with FSF.
-
- ;;; Commentary:
-
- ;; Written by:
- ;; TN/ETX/TX/UMG Howard Gayle UUCP : seismo!enea!erix!howard
- ;; Telefonaktiebolaget L M Ericsson Phone: +46 8 719 55 65
- ;; Ericsson Telecom Telex: 14910 ERIC S
- ;; S-126 25 Stockholm FAX : +46 8 719 64 82
- ;; Sweden
-
- ;;; Code:
-
- ;;;###autoload
- (defun describe-buffer-case-table ()
- "Describe the case table of the current buffer."
- (interactive)
- (let ((ch 0))
- (with-displaying-help-buffer
- (lambda ()
- (set-buffer standard-output)
- (while (< ch 256)
- (cond ((/= ch (downcase ch))
- (insert (text-char-description ch))
- (indent-to 16)
- (insert "uppercase, matches "
- (text-char-description (downcase ch))
- "\n"))
- ((/= ch (upcase ch))
- (insert (text-char-description ch))
- (indent-to 16)
- (insert "lowercase, matches "
- (text-char-description (upcase ch))
- "\n"))
- ;; (t
- ;; (insert (text-char-description ch))
- ;; (indent-to 16)
- ;; (insert "case-invariant\n"))
- )
- (setq ch (1+ ch)))))))
-
- (defun invert-case (count)
- "Change the case of the character just after point and move over it.
- With arg, applies to that many chars.
- Negative arg inverts characters before point but does not move."
- (interactive "p")
- (if (< count 0)
- (progn (setq count (min (1- (point)) (- count)))
- (forward-char (- count))))
- (while (> count 0)
- (let ((ch (char-after)))
- (cond ((/= (upcase ch) ch)
- (insert (upcase ch))
- (delete-char 1))
- ((/= (downcase ch) ch)
- (insert (downcase ch))
- (delete-char 1))
- (t
- (forward-char 1))))
- (setq count (1- count))))
-
- (defun set-case-syntax-delims (l r table)
- "Make characters L and R a matching pair of non-case-converting delimiters.
- Sets the entries for L and R in standard-case-table,
- standard-syntax-table, and text-mode-syntax-table to indicate
- left and right delimiters."
- (aset (car table) l l)
- (aset (car table) r r)
- (modify-syntax-entry l (concat "(" (char-to-string r) " ")
- (standard-syntax-table))
- (modify-syntax-entry l (concat "(" (char-to-string r) " ")
- text-mode-syntax-table)
- (modify-syntax-entry r (concat ")" (char-to-string l) " ")
- (standard-syntax-table))
- (modify-syntax-entry r (concat ")" (char-to-string l) " ")
- text-mode-syntax-table))
-
- (defun set-case-syntax-pair (uc lc table)
- "Make characters UC and LC a pair of inter-case-converting letters.
- Sets the entries for characters UC and LC in
- standard-case-table, standard-syntax-table, and
- text-mode-syntax-table to indicate an (uppercase, lowercase)
- pair of letters."
- (aset (car table) uc lc)
- (modify-syntax-entry lc "w " (standard-syntax-table))
- (modify-syntax-entry lc "w " text-mode-syntax-table)
- (modify-syntax-entry uc "w " (standard-syntax-table))
- (modify-syntax-entry uc "w " text-mode-syntax-table))
-
- (defun set-case-syntax (c syntax table)
- "Make characters C case-invariant with syntax SYNTAX.
- Sets the entries for character C in standard-case-table,
- standard-syntax-table, and text-mode-syntax-table to indicate this.
- SYNTAX should be \" \", \"w\", \".\" or \"_\"."
- (aset (car table) c c)
- (modify-syntax-entry c syntax (standard-syntax-table))
- (modify-syntax-entry c syntax text-mode-syntax-table))
-
- (provide 'case-table)
-
- ;;; case-table.el ends here
-