Mercurial > hg > xemacs-beta
view src/m/ibmrt.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 | ecf1ebac70d8 |
| children |
line wrap: on
line source
/* RTPC machine dependent defines Copyright (C) 1986 Free Software Foundation, Inc. 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 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. */ /* The following line tells the configuration script what sort of operating system this machine is likely to run. USUAL-OPSYS="bsd4-2" */ /* Now define a symbol for the cpu type, if your compiler does not define it automatically. */ /* XEmacs change */ #ifndef ibmrt #define ibmrt #endif #ifndef romp #define romp /* unfortunately old include files are hanging around. */ #endif /* Data type of load average, as read out of kmem. */ #define LOAD_AVE_TYPE double /* For AIS (sysV) */ /* Convert that into an integer that is 100 for a load average of 1.0 */ #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0) #define DATA_START 0x10000000 /* The text segment always starts at a fixed address. This way we don't need to have a label _start defined. */ #define TEXT_START 0 /* Taking a pointer to a char casting it as int pointer */ /* and then taking the int which the int pointer points to */ /* is practically guaranteed to give erroneous results */ #define NEED_ERRNO #define SKTPAIR /* Special switches to give the C compiler. */ #ifndef __GNUC__ #define C_SWITCH_MACHINE "-Dalloca=_Alloca" #endif /* XEmacs addition: */ /* Under Mach at least, gcc doesn't seem to work as the linker. */ #ifdef MACH #define START_FILES "pre-crt0.o" #ifdef __GNUC__ #define LINKER "pcc" #endif #endif /* Don't attempt to relabel some of the data as text when dumping. It does not work because their virtual addresses are not consecutive. This enables us to use the standard crt0.o. */ #define NO_REMAP /* Use the bitmap files that come with Emacs. */ #define EMACS_BITMAP_FILES