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95 lines
3.5 KiB
EmacsLisp
95 lines
3.5 KiB
EmacsLisp
;;; case-table.el ---code to extend the character set and support case tables.
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;; Copyright (C) 1988 Free Software Foundation, Inc.
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;; Author: Howard Gayle
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;; Maintainer: FSF
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;; Keywords: i14n
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation; either version 2, or (at your option)
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;; any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs; see the file COPYING. If not, write to
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;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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;;; Commentary:
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;; Written by:
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;; TN/ETX/TX/UMG Howard Gayle UUCP : seismo!enea!erix!howard
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;; Telefonaktiebolaget L M Ericsson Phone: +46 8 719 55 65
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;; Ericsson Telecom Telex: 14910 ERIC S
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;; S-126 25 Stockholm FAX : +46 8 719 64 82
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;; Sweden
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;;; Code:
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(defun describe-buffer-case-table ()
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"Describe the case table of the current buffer."
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(interactive)
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(let ((vector (make-vector 256 nil))
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(case-table (current-case-table))
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(i 0))
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(while (< i 256)
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(aset vector i
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(cond ((/= ch (downcase ch))
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(concat "uppercase, matches "
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(text-char-description (downcase ch))))
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((/= ch (upcase ch))
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(concat "lowercase, matches "
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(text-char-description (upcase ch))))
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(t "case-invariant")))
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(setq i (1+ i))))
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(with-output-to-temp-buffer "*Help*"
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(describe-vector vector)))
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(defun set-case-syntax-delims (l r string)
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"Make characters L and R a matching pair of non-case-converting delimiters.
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Sets the entries for L and R in STRING, which is a downcasing table.
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Also modifies `standard-syntax-table', and `text-mode-syntax-table' to
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indicate left and right delimiters."
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(aset string l l)
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(aset string r r)
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(modify-syntax-entry l (concat "(" (char-to-string r) " ")
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(standard-syntax-table))
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(modify-syntax-entry l (concat "(" (char-to-string r) " ")
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text-mode-syntax-table)
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(modify-syntax-entry r (concat ")" (char-to-string l) " ")
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(standard-syntax-table))
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(modify-syntax-entry r (concat ")" (char-to-string l) " ")
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text-mode-syntax-table))
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(defun set-case-syntax-pair (uc lc string)
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"Make characters UC and LC a pair of inter-case-converting letters.
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Sets the entries for characters UC and LC in STRING, which is a downcasing table.
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Also modify `standard-syntax-table' and `text-mode-syntax-table' to indicate an
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(uppercase, lowercase) pair of letters."
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(aset string uc lc)
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(aset (car (cdr (standard-case-table))) lc uc)
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(modify-syntax-entry lc "w " (standard-syntax-table))
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(modify-syntax-entry lc "w " text-mode-syntax-table)
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(modify-syntax-entry uc "w " (standard-syntax-table))
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(modify-syntax-entry uc "w " text-mode-syntax-table))
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(defun set-case-syntax (c syntax string)
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"Make characters C case-invariant with syntax SYNTAX.
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Sets the entries for character C in STRING, which is the downcasing table.
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Also modify `standard-syntax-table' and `text-mode-syntax-table'.
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SYNTAX should be \" \", \"w\", \".\" or \"_\"."
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(aset string c c)
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(modify-syntax-entry c syntax (standard-syntax-table))
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(modify-syntax-entry c syntax text-mode-syntax-table))
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(provide 'case-table)
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;;; case-table.el ends here
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