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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 8fea628c26fb
children 8c406331e77e 861f2601a38b
line wrap: on
line source

/* Synched up with: Completely divergent from FSF. */
#define SOLARIS2 1
#define POSIX 1

#ifndef USG
#define USG
#endif

#ifndef USG5_4
#define USG5_4
#endif

/* Fix understandable GCC lossage on Solaris 2.6 */
#if defined(__GNUC__) && OS_RELEASE >= 506 && OS_RELEASE < 510 && !defined(NOT_C_CODE)

/* GCC va_list munging is a little messed up */
#define __GNUC_VA_LIST
#define _VA_LIST_
#define _VA_LIST va_list
typedef void *__gnuc_va_list;
typedef __gnuc_va_list va_list;

/* Missing prototypes for functions added in Solaris 2.6 */
#include <sys/types.h>
struct msghdr;
struct sockaddr;
extern int     __xnet_bind    (int, const struct sockaddr *, size_t);
extern int     __xnet_listen  (int, int);
extern int     __xnet_connect (int, const struct sockaddr *, size_t);
extern ssize_t __xnet_recvmsg (int, struct msghdr *, int);
extern ssize_t __xnet_sendmsg (int, const struct msghdr *, int);
extern ssize_t __xnet_sendto  (int, const void *, size_t, int, const struct sockaddr *, size_t);
extern int     __xnet_socket  (int, int, int);
extern int     __xnet_socketpair (int, int, int, int *);
extern int     __xnet_getsockopt (int, int, int, void *, size_t *);
#endif /* GCC && >= Solaris 2.6 && C code */

#include "usg5-4-2.h"	/* XEmacs change from 5-4 to 5-4-2 */
#undef PC /* Defined in x86 /usr/include/sys/reg.h */

/* SIGIO seems to be working under Solaris and it makes ^G work better... */
#undef BROKEN_SIGIO

/* eggert@twinsun.com said these work in Solaris.
   Perhaps they work in all kinds of SVR4, but this is more conservative.  */
#undef BROKEN_TIOCGETC
#undef BROKEN_TIOCGWINSZ

#ifdef NOT_C_CODE
#define ORDINARY_LINK
/* XEmacs change -- some Motif packages need -lgen to get regex and regcmp */

#undef LIBS_SYSTEM
#define LIBS_SYSTEM "-lsocket -lnsl -lelf -lgen -ldl"

/* SYSTEM_MALLOC must be defined if dbx/RTC is going to be used.  dbx/RTC does
   not work with a static definition of malloc(). */
/* We want to be able to test out ralloc.c. */
/* #define SYSTEM_MALLOC */

/* XEmacs: there used to be a special definition of
   PTY_TTY_NAME_SPRINTF here that was identical to the
   other SYSV R4 definitions except that it didn't
   block SIGCHLD around the call to grantpt().  This
   is *not* in 19.29 and is almost certainly incorrect.
 */

#undef UNEXEC
#if OS_RELEASE < 506
#define UNEXEC "unexsol2.o"
#else
#define UNEXEC "unexsol2-6.o"
#endif

#else /* C_CODE */

#if OS_RELEASE <= 503
/* Solaris 2.3 has a bug in XListFontsWithInfo.  */
#define BROKEN_XLISTFONTSWITHINFO
#endif

/* XEmacs addition: Raymond Toy says XEmacs completely misses SIGCHLD
   when compiled with GCC 2.7.0 (but not, apparently, with SunPro C?),
   X11R6, and Solaris 2.4.

   Someone else submitted a simple test program that duplicates this
   behavior, and says it has something to do with the fact that X11R6
   links with the threads library. */

#ifdef THIS_IS_X11R6
#define BROKEN_SIGCHLD
#endif

#if OS_RELEASE < 505

#if __STDC__ == 1 && defined(__SUNPRO_C)
#define _POSIX_C_SOURCE 1
#include <setjmp.h>
#undef _POSIX_C_SOURCE
#endif /* cc -Xc */

/* Missing prototype, added in Solaris 2.5 */
extern void *__builtin_alloca (size_t);
#endif /* before SunOS 5.5 */

#if OS_RELEASE == 505
/* The following functions were added in Solaris 2.5,
   but they forgot to add prototypes to the system header files. */
int getpagesize (void);
long random (void);
void srandom (unsigned int seed);
int usleep (unsigned int useconds);
#endif /* SunOS 5.5 */

/* 2.5 now has `random' back in libc but we don't want to use it. */
#if OS_RELEASE >= 505
#undef HAVE_RANDOM
/* Apparently not necessary here, and it causes 10% CPU chewage. */
#undef BROKEN_SIGCHLD
#endif /* >= SunOS 5.5 */

#if OS_RELEASE < 506
/* Missing prototypes, added in Solaris 2.6 */
struct timeval;
int utimes (char *file, struct timeval *tvp);
int gethostname (char *name, int namelen);
#endif /* before SunOS 5.6 */

#include <sys/utsname.h> /* warning: macro redefined: SYS_NMLN */

/* XEmacs: Solaris has sigsetjmp but using it leads to core dumps at
   least under 2.4 */
#undef _setjmp
#define _setjmp setjmp

#endif /* C_CODE */