[Emacs-diffs] Changes to emacs/lisp/case-table.el [lexbind]

[Miles Bader]

Index: emacs/lisp/case-table.el
diff -c /dev/null emacs/lisp/case-table.el:1.26.4.1
*** /dev/null   Tue Oct 14 19:51:40 2003
--- emacs/lisp/case-table.el    Tue Oct 14 19:50:50 2003
***************
*** 0 ****
--- 1,135 ----
+ ;;; 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:
+ 
+ ;; 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:
+ 
+ (defvar set-case-syntax-offset 0)
+ 
+ (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)
+                (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))
+ 
+ (defsubst set-case-syntax-1 (char)
+   "Offset CHAR by `set-case-syntax-offset' if CHAR is a non-ASCII 8-bit char."
+   (if (and (>= char 128) (< char 256))
+       (+ char set-case-syntax-offset)
+     char))
+ 
+ (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."
+   (setq l (set-case-syntax-1 l))
+   (setq r (set-case-syntax-1 r))
+   (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."
+   (unless (= (charset-bytes (char-charset uc))
+            (charset-bytes (char-charset lc)))
+     (error "Can't casify chars with different `charset-bytes' values"))
+   (setq uc (set-case-syntax-1 uc))
+   (setq lc (set-case-syntax-1 lc))
+   (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 \"_\"."
+   (setq c (set-case-syntax-1 c))
+   (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)
+ 
+ ;;; arch-tag: 3c2cf885-2c9a-449a-9972-2e269191896d
+ ;;; case-table.el ends here