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view src/s/template.h @ 4407:4ee73bbe4f8e
Always use boyer_moore in ASCII or Latin-1 buffers with ASCII search strings.
2007-12-26 Aidan Kehoe <kehoea@parhasard.net>
* casetab.c:
Extend and correct some case table documentation.
* search.c (search_buffer):
Correct a bug where only the first entry for a character in the
case equivalence table was examined in determining if the
Boyer-Moore search algorithm is appropriate.
If there are case mappings outside of the charset and row of the
characters specified in the search string, those case mappings can
be safely ignored (and Boyer-Moore search can be used) if we know
from the buffer statistics that the corresponding characters cannot
occur.
* search.c (boyer_moore):
Assert that we haven't been passed a string with varying
characters sets or rows within character sets. That's what
simple_search is for.
In the very rare event that a character in the search string has a
canonical case mapping that is not in the same character set and
row, don't try to search for the canonical character, search for
some other character that is in the the desired character set and
row. Assert that the case table isn't corrupt.
Do not search for any character case mappings that cannot possibly
occur in the buffer, given the buffer metadata about its
contents.
author | Aidan Kehoe <kehoea@parhasard.net> |
---|---|
date | Wed, 26 Dec 2007 17:30:16 +0100 |
parents | 023b83f4e54b |
children | aa5ed11f473b |
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/* Template for system description header files. This file describes the parameters that system description files should define or not. Copyright (C) 1985, 1986, 1992 Free Software Foundation, Inc. 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, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ /* Synched up with: FSF 19.31. */ /* * Define symbols to identify the version of Unix this is. * Define all the symbols that apply correctly. */ /* #define UNIPLUS */ /* #define USG5 */ /* #define USG */ /* #define HPUX */ /* #define UMAX */ /* #define BSD4_1 */ /* #define BSD4_2 */ /* #define BSD4_3 */ /* #define BSD */ /* SYSTEM_TYPE should indicate the kind of system you are using. It sets the Lisp variable system-type. */ #define SYSTEM_TYPE "berkeley-unix" /* Letter to use in finding device name of first pty, if system supports pty's. 'a' means it is /dev/ptya0 */ #define FIRST_PTY_LETTER 'p' /* If your system uses COFF (Common Object File Format) then define the preprocessor symbol "COFF". */ /* #define COFF */ /* define MAIL_USE_FLOCK if the mailer uses flock to interlock access to /usr/spool/mail/$USER. The alternative is that a lock file named /usr/spool/mail/$USER.lock. */ #define MAIL_USE_FLOCK /* If the character used to separate elements of the executable path is not ':', #define this to be the appropriate character constant. */ /* #define SEPCHAR ':' */ /* ============================================================ */ /* Here, add any special hacks needed to make Emacs work on this system. For example, you might define certain system call names that don't exist on your system, or that do different things on your system and must be used only through an encapsulation (Which you should place, by convention, in sysdep.c). */ /* ============================================================ */ /* After adding support for a new system, modify the large case statement in the `configure' script to recognize reasonable configuration names, and add a description of the system to `etc/MACHINES'. If you've just fixed a problem in an existing configuration file, you should also check `etc/MACHINES' to make sure its descriptions of known problems in that configuration should be updated. */