Mercurial > hg > xemacs-beta
view src/m/7300.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
/* machine description file for AT&T UNIX PC model 7300 Copyright (C) 1986 Free Software Foundation, Inc. Modified for this machine by mtxinu!rtech!gonzo!daveb 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="usg5-2-2" */ /* Now define a symbol for the cpu type, if your compiler does not define it automatically: vax, m68000, ns16000 are the ones defined so far. */ # ifndef mc68k # define mc68k # endif #ifndef m68k #define m68k #endif /* Cause crt0.c to define errno. */ #define NEED_ERRNO /* Data type of load average, as read out of kmem. */ /* These are commented out since it is not supported by this machine. */ /* #define LOAD_AVE_TYPE long */ /* 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) */ #ifdef __GNUC__ #else #define SWITCH_ENUM_BUG #endif /* We don't have memmove. */ #define memmove(d, s, n) safe_bcopy (s, d, n) /* These three lines were new in 18.50. They were said to permit a demand-paged executable, but someone else says they don't work. Someone else says they do. They didn't work because errno was an initialized variable in crt0.c, and because of %splimit (also therein), both of which have been fixed now. */ #define SECTION_ALIGNMENT 0x03ff #define SEGMENT_MASK 0xffff #define LD_SWITCH_MACHINE "-z" /* Insist on using cc when compiling this. GCC may have been configured to use GAS syntax, which causes problems. */ #define CRT0_COMPILE "cc -c -O -Demacs"