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.

/* Synched up with: FSF 19.31. */

/* s- file for Interactive (ISC) Unix version 3.0 on the 386.  */

#include "isc2-2.h"

/* This appears on 3.0, presumably as part of what SunSoft call X2. */
#undef NO_X_DESTROY_DATABASE

/* People say that using -traditional causes lossage with `const',
   so we might as well try getting rid of -traditional.  */
#undef C_SWITCH_SYSTEM

/* TIOCGWINSZ isn't broken; you just have to know where to find it.  */
#undef BROKEN_TIOCGWINSZ
#define NEED_SIOCTL

/* We need either _XOPEN_SOURCE or _POSIX_SOURCE to import the posix
   signal symbols; might as well use _XOPEN_SOURCE.  Defining _SYSV3
   ensures that we don't lose the traditional symbols as a side effect
   from this or __STDC__ being defined.  */
#define C_SWITCH_SYSTEM "-D_XOPEN_SOURCE -D_SYSV3"

#ifdef __GNUC__  /* Currently we use -lcposix only with gcc */
/* This works around a bug in ISC 4.0 and 3.0; it fails
   to clear the "POSIX process" flag on an exec.
   It won't be needed for 4.1.  */
#define EXTRA_INITIALIZE __setostype (0)
#endif