mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-11-23 07:19:15 +00:00
114 lines
4.0 KiB
EmacsLisp
114 lines
4.0 KiB
EmacsLisp
;;; case-table.el --- code to extend the character set and support case tables
|
|
|
|
;; Copyright (C) 1988, 1994 Free Software Foundation, Inc.
|
|
|
|
;; Author: Howard Gayle
|
|
;; Maintainer: FSF
|
|
;; Keywords: i18n
|
|
|
|
;; 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 2, 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, Inc., 59 Temple Place - Suite 330,
|
|
;; Boston, MA 02111-1307, USA.
|
|
|
|
;;; Commentary:
|
|
|
|
;;; Code:
|
|
|
|
(defvar set-case-syntax-set-multibyte nil)
|
|
|
|
(defun describe-buffer-case-table ()
|
|
"Describe the case table of the current buffer."
|
|
(interactive)
|
|
(let ((description (make-char-table 'case-table)))
|
|
(map-char-table
|
|
(function (lambda (key value)
|
|
(if (consp key)
|
|
(set-char-table-range description key "case-invariant")
|
|
(aset
|
|
description key
|
|
(cond ((not (natnump value))
|
|
"case-invariant")
|
|
((/= key (downcase key))
|
|
(concat "uppercase, matches "
|
|
(char-to-string (downcase key))))
|
|
((/= key (upcase key))
|
|
(concat "lowercase, matches "
|
|
(char-to-string (upcase key))))
|
|
(t "case-invariant"))))))
|
|
(current-case-table))
|
|
(save-excursion
|
|
(with-output-to-temp-buffer "*Help*"
|
|
(set-buffer standard-output)
|
|
(describe-vector description)
|
|
(help-mode)))))
|
|
|
|
(defun copy-case-table (case-table)
|
|
(let ((copy (copy-sequence case-table)))
|
|
;; Clear out the extra slots so that they will be
|
|
;; recomputed from the main (downcase) table.
|
|
(set-char-table-extra-slot copy 0 nil)
|
|
(set-char-table-extra-slot copy 1 nil)
|
|
(set-char-table-extra-slot copy 2 nil)
|
|
copy))
|
|
|
|
(defun set-case-syntax-delims (l r table)
|
|
"Make characters L and R a matching pair of non-case-converting delimiters.
|
|
This sets the entries for L and R in TABLE, which is a string
|
|
that will be used as the downcase part of a case table.
|
|
It also modifies `standard-syntax-table' to
|
|
indicate left and right delimiters."
|
|
(aset table l l)
|
|
(aset table r r)
|
|
;; Clear out the extra slots so that they will be
|
|
;; recomputed from the main (downcase) table.
|
|
(set-char-table-extra-slot table 0 nil)
|
|
(set-char-table-extra-slot table 1 nil)
|
|
(set-char-table-extra-slot table 2 nil)
|
|
(modify-syntax-entry l (concat "(" (char-to-string r) " ")
|
|
(standard-syntax-table))
|
|
(modify-syntax-entry r (concat ")" (char-to-string l) " ")
|
|
(standard-syntax-table)))
|
|
|
|
(defun set-case-syntax-pair (uc lc table)
|
|
"Make characters UC and LC a pair of inter-case-converting letters.
|
|
This sets the entries for characters UC and LC in TABLE, which is a string
|
|
that will be used as the downcase part of a case table.
|
|
It also modifies `standard-syntax-table' to give them the syntax of
|
|
word constituents."
|
|
(aset table uc lc)
|
|
(aset table lc lc)
|
|
(set-char-table-extra-slot table 0 nil)
|
|
(set-char-table-extra-slot table 1 nil)
|
|
(set-char-table-extra-slot table 2 nil)
|
|
(modify-syntax-entry lc "w " (standard-syntax-table))
|
|
(modify-syntax-entry uc "w " (standard-syntax-table)))
|
|
|
|
(defun set-case-syntax (c syntax table)
|
|
"Make character C case-invariant with syntax SYNTAX.
|
|
This sets the entry for character C in TABLE, which is a string
|
|
that will be used as the downcase part of a case table.
|
|
It also modifies `standard-syntax-table'.
|
|
SYNTAX should be \" \", \"w\", \".\" or \"_\"."
|
|
(aset table c c)
|
|
(set-char-table-extra-slot table 0 nil)
|
|
(set-char-table-extra-slot table 1 nil)
|
|
(set-char-table-extra-slot table 2 nil)
|
|
(modify-syntax-entry c syntax (standard-syntax-table)))
|
|
|
|
(provide 'case-table)
|
|
|
|
;;; case-table.el ends here
|