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diff --git a/Build/source/texk/kpathsea/config.h b/Build/source/texk/kpathsea/config.h
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--- a/Build/source/texk/kpathsea/config.h
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-/* config.h: master configuration file, included first by all compilable
- source files (not headers).
-
- Copyright 1993, 1995, 1996, 1997, 2008, 2010, 2011, 2016 Karl Berry.
- Copyright 2000, 2003, 2004, 2005 Olaf Weber.
-
- This library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
-
- This library 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
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with this library; if not, see <http://www.gnu.org/licenses/>. */
-
-#ifndef KPATHSEA_CONFIG_H
-#define KPATHSEA_CONFIG_H
-
-/* System defines are for non-Unix systems only. (Testing for all Unix
- variations should be done in configure.) Presently the defines used
- are: AMIGA DOS OS2 WIN32. I do not use any of these systems myself;
- if you do, I'd be grateful for any changes. */
-
-#if defined(DJGPP) || defined(__DJGPP__) || \
- defined(CYGWIN) || defined(__CYGWIN__) || \
- defined(CYGWIN32) || defined(__CYGWIN32__) || \
- defined(MINGW32) || defined(__MINGW32__)
-#define __i386_pc_gnu__
-#endif
-
-/* If we have either DOS or OS2, we are DOSISH. Cygwin pretends to be
- Unix, mostly, so don't include it here. */
-#if defined(OS2) || \
- defined(MSDOS) || defined(__MSDOS__) || defined(DOS) || \
- defined(WIN32) || defined(__WIN32__) || defined(_WIN32) || \
- defined(DJGPP) || defined(__DJGPP__) || \
- defined(MINGW32) || defined(__MINGW32__)
-#define DOSISH
-#endif
-
-/* case-insensitive filename comparisons? */
-#if defined (DOSISH)
-#define MONOCASE_FILENAMES
-#endif
-
-/* NULL device. */
-#if defined (DOSISH)
-#define DEV_NULL "NUL"
-#else
-#define DEV_NULL "/dev/null"
-#endif
-
-#if defined (WIN32) && !defined (__STDC__)
-#define __STDC__ 1
-#endif
-
-/* System dependencies that are figured out by `configure'. */
-#include <kpathsea/c-auto.h>
-
-#ifdef __DJGPP__
-#include <fcntl.h> /* for long filenames' stuff */
-#include <dir.h> /* for `getdisk' */
-#include <io.h> /* for `setmode' */
-#endif
-
-/* Some drivers have partially integrated kpathsea changes. */
-#ifndef KPATHSEA
-#define KPATHSEA 34
-#endif
-
-#ifdef __MINGW32__
-/* In mingw32, the eof() function is part of the !_NO_OLDNAMES section
- of <io.h>, that is read in automatically via <unistd.h>. We cannot
- allow that because web2c/lib/eofeoln.c defines a private,
- incompatible function named eof().
- But many of the other things defined via !_NO_OLDNAMES are needed,
- so #define _NO_OLDNAMES cannot be used. So, temporarily define eof
- as a macro.
-*/
-#define eof saved_eof
-#include <kpathsea/c-std.h> /* <stdio.h>, <math.h>, etc. */
-#undef eof
-#else
-#include <kpathsea/c-std.h> /* <stdio.h>, <math.h>, etc. */
-#endif
-
-#include <kpathsea/c-proto.h> /* KPSEDLL. */
-
-/*
- This must be included after "c-proto.h"
- but before "lib.h". FP.
-*/
-#if defined (WIN32) || defined (_WIN32)
-#ifdef __MINGW32__
-#include <kpathsea/mingw32.h>
-#else
-#include <kpathsea/win32lib.h>
-#endif
-#include <kpathsea/types.h>
-#include <kpathsea/knj.h>
-#endif
-
-#if defined(WIN32) || defined(WRAP_SNPRINTF)
-/* All Unix systems known to us have snprintf() and vsnprintf(),
- while all known Windows systems have _snprintf() and _vsnprintf().
-
- Consider a call
- RET = snprintf(BUF, SIZE, FMT, ...)
- and let LEN be the number that would be written to BUF if SIZE were
- sufficiently large (not counting the trailing null byte).
-
- C99 requires that snprintf
- (A) modifies at most the first SIZE bytes of BUF,
- (B) writes a trailing null byte except when SIZE=0, and
- (C) always returns LEN.
-
- All known implementations (except some ancient buggy ones, e.g., for
- 64-bit Solaris 7 from Oct. 1998) satisfy (A). As long as LEN<SIZE
- they all write a trailing null byte and return LEN.
-
- Condition (C) is, however, violated for LEN>=SIZE by some older
- implementations (SUSv2, glibc <= 2.0.6, etc.) and for Windows even
- (B) is violated..
-
- TeX Live does not require the full C99 semantics, but will need that
- (1) there is always a trailing null byte, and
- (2) for LEN>=SIZE the return value is either >=SIZE or <0, i.e.,
- (unsigned)RET >= (unsigned)SIZE.
-
- A violation of (2) is detected by configure (except when cross
- compiling) and by a runtime check in the initialization routine
- kpathsea_set_program_name.
-
- A violation of (1) is handled here through static inline wrapper
- functions. */
-
-
-#undef snprintf
-#undef vsnprintf
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-static inline int
-kpse_vsnprintf (char *str, size_t size, const char *format, va_list ap)
-{
-#ifdef WIN32
- int ret = _vsnprintf (str, size, format, ap);
-#else
- int ret = vsnprintf (str, size, format, ap);
-#endif
- if (size > 0 && (unsigned)ret >= (unsigned)size)
- str [size - 1] = '\0';
- return ret;
-}
-
-static inline int
-kpse_snprintf (char *str, size_t size, const char *format, ...)
-{
- int ret;
- va_list ap;
-
- va_start (ap, format);
- ret = kpse_vsnprintf (str, size, format, ap);
- va_end (ap);
- return ret;
-}
-
-#ifdef __cplusplus
-}
-#endif
-
-#define snprintf kpse_snprintf
-#define vsnprintf kpse_vsnprintf
-
-#endif /* WIN32 || WRAP_SNPRINTF */
-
-/* Transform filename characters for use in hash tables. */
-#if defined(MONOCASE_FILENAMES)
-#if defined(WIN32) && !defined(__i386_pc_gnu__)
-/* This is way faster under Win32. */
-#define TRANSFORM(x) ((unsigned)CharLower((LPTSTR)(BYTE)(x)))
-#else
-#define TRANSFORM(x) (tolower(x))
-#endif
-#else
-#define TRANSFORM(x) (x)
-#endif
-
-#include <kpathsea/debug.h> /* Runtime tracing. */
-#include <kpathsea/lib.h> /* STREQ, etc. */
-#include <kpathsea/types.h> /* <sys/types.h>, boolean, string, etc. */
-#include <kpathsea/progname.h> /* for kpse_invocation_*name */
-
-
-/* If you want to find subdirectories in a directory with non-Unix
- semantics (specifically, if a directory with no subdirectories does
- not have exactly two links), define this. */
-#if !defined (VMS) && !defined (VMCMS)
-#if !defined (DOSISH) || defined(__DJGPP__)
-/* Surprise! DJGPP returns st_nlink exactly like on Unix. */
-#define ST_NLINK_TRICK
-#endif /* either not DOSISH or __DJGPP__ */
-#endif /* not DOS and not VMS and not VMCMS */
-
-#ifdef AMIGA
-/* No popen/pclose on Amiga, but rather than put #ifdef's in tex-make.c,
- let's get rid of the functions here. (CallMF will automatically
- generate fonts.) pclose must not be simply empty, since it still
- occurs in a comparison. */
-#define popen(cmd, mode) NULL
-#define pclose(file) 0
-#endif /* AMIGA */
-
-#ifdef OS2
-#define access ln_access
-#define chmod ln_chmod
-#define creat ln_creat
-#define fopen ln_fopen
-#define freopen ln_freopen
-#define lstat ln_lstat
-#define open ln_open
-#define remove ln_remove
-#define rename ln_rename
-#define sopen ln_sopen
-#define stat ln_stat
-#define unlink ln_unlink
-#endif /* OS2 */
-
-#endif /* not KPATHSEA_CONFIG_H */