view src/m/symmetry.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
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/* machine description file for SEQUENT SYMMETRY machines
   Copyright (C) 1985, 1986 Free Software Foundation, Inc.

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. */

/* CHANGE: [Eric H. Herrin II; eric@ms.uky.edu - 15 Sept 1988] 
 * Modified the sequent.h file for the Sequent Symmetry machine.   
 * Biggest change was to align the sections in the a.out to 4K 
 * boundaries (this is the page size).
 */


/* NOTICE: this file works for DYNIX release 3.0.12 on Sequent Symmetry
 * (Intel 80386) machines.  Hasn't been tested on anything else.
 */ 

/* The following line tells the configuration script what sort of 
   operating system this machine is likely to run.
   USUAL-OPSYS="bsd4-3"  */

#include "intel386.h"

/* Data type of load average, as read out of kmem.  */

#define LOAD_AVE_TYPE unsigned long

/* Convert that into an integer that is 100 for a load average of 1.0  */

#define	FSCALE	1000.0
#define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE)

/* Name of file the to look in
   for the kernel symbol table (for load average) */

#undef KERNEL_FILE
#define KERNEL_FILE "/dynix"

/* Avoids a compiler bug */

#define TAHOE_REGISTER_BUG

/* Say that the text segment of a.out includes the header;
   the header actually occupies the first few bytes of the text segment
   and is counted in hdr.a_text.  Furthermore, the value written
   in the a_text in the file must have N_ADDRADJ added to it.  */

#define A_TEXT_OFFSET(HDR) (sizeof (HDR) + N_ADDRADJ (HDR))

/* This is the offset of the executable's text, from the start of the file.  */

#define A_TEXT_SEEK(HDR) (N_TXTOFF (hdr) + sizeof (hdr))

/* The file sections in the Symmetry a.out must be on 4K boundaries.
 */
#define SEGSIZ 4096
#define SECTION_ALIGNMENT	(SEGSIZ-1)

/* (short) negative-int doesn't sign-extend correctly */
#define SHORT_CAST_BUG

/* Cause compilations to be done in parallel in ymakefile.  */
#define MAKE_PARALLEL &

/* Define how to search all pty names.
   This is for Dynix 3.0; delete next 5 definitions for older systems.  */

#define PTY_MAJOR "pqrstuvwPQRSTUVW"
#define PTY_MINOR "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
#define PTY_ITERATION					\
  register int ma, mi;					\
  for (ma = 0; ma < sizeof(PTY_MAJOR) - 1; ma++)	\
    for (mi = 0; mi < sizeof(PTY_MINOR) - 1; mi++)
#define PTY_NAME_SPRINTF \
  sprintf (pty_name, "/dev/pty%c%c", PTY_MAJOR[ma], PTY_MINOR[mi]);
#define PTY_TTY_NAME_SPRINTF \
  sprintf (pty_name, "/dev/tty%c%c", PTY_MAJOR[ma], PTY_MINOR[mi]);