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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 943eaba38521
children
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#define AIX4

#include "aix3-2-5.h"

/* AIX 4 does not have HFT any more.  */
#undef AIXHFT

#ifndef NOT_C_CODE
#define _XFUNCS_H_ 1

/* #### we don't use either any more.  some AIX user should delete the include
   and see if anything breaks. --ben */
/* AIX is happier when bzero and strcasecmp are declared */
#include "strings.h"

/* Forward declarations for xlc warning suppressions */
struct ether_addr;
struct sockaddr_dl;

#ifdef __xlC__			/* "eXceLlent C compiler" ?! */
#if __xlC__ >= 1200
/* IBM's C compiler option `-O3' is too aggressive.
   We recommend instead the combination `-O3 -qstrict', which seems safe.

   cc -O3 miscompiles at least two functions.  From IBM's docs:

   IBM> -qstrict turns off the following optimizations:

   IBM> Performing code motion and scheduling on computations such as loads
   IBM> and floating-point computations that may trigger an exception.

   Nevertheless, we try to work with these compiler options. */
#pragma option_override (bytecount_to_charcount, "opt(strict,yes)")
#pragma option_override (Fexpand_file_name, "opt(strict,yes)")
#endif /* recent IBM C compiler */
#endif /* IBM's C compiler */

#endif /* C code */

/* getaddrinfo is broken in AIX 4.3 as per IY04165.
   At this time (2/21/2000), there's no PTF available.
   -- Mike Sperber <mike@xemacs.org> */

#undef HAVE_GETADDRINFO