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view src/m/mips4.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 | 3ecd8885ac67 |
children |
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/* Synched up with: FSF 19.31. */ /* machine description file for Mips running RISCOS version 4. */ #include "mips.h" /* The following line tells the configuration script what sort of operating system this machine is likely to run. USUAL-OPSYS="note" NOTE-START Use -opsystem=usg5-2-2 normally, or -opsystem=bsd4-3 with the BSD world. NOTE-END */ #if 0 /* Define MIPS2 if you have an R6000 or R4000. */ #define MIPS2 #endif #ifdef __GNUC__ #define C_DEBUG_SWITCH "-g -O" #else /* We used to have -systype bsd43, but a configure change now takes care of that option. */ #ifdef MIPS2 #define C_DEBUG_SWITCH "-DMips -g3 -Wf,-XNd4000 -O -Olimit 2000 -mips2" #else #define C_DEBUG_SWITCH "-DMips -g3 -Wf,-XNd4000 -O -Olimit 2000" #endif #endif #ifdef TERMINFO #undef TERMINFO #endif #define START_FILES "pre-crt0.o /lib/crt1.o" /* Used to have -lisode, but jlp@math.byu.edu says remove it (for RISCOS 4.52). */ /* ethanb@ptolemy.astro.washington.edu says crtn.o uses _ctype and therefore we must search libc again after crtn.o. The -L is used to force second -lc to find the sysv version of libc.a, which is needed because the BSD libc.a doesn't have _ctype. */ #define LIB_STANDARD "-lc /lib/crtn.o -L/usr/lib -lc" #define COFF #undef LD_SWITCH_MACHINE #define LD_SWITCH_MACHINE "-systype bsd43 -g3 -D 800000" #define NO_MODE_T /* These are needed on Riscos 4.0. It appears that's the only system which uses mips4.h and defined BSD. */ #ifdef BSD #undef HAVE_XRMSETDATABASE #undef HAVE_XSCREENRESOURCESTRING #endif