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Test Your Knowledge in Computers #349
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AWK was originally written in 1977 and distributed with Version 7 Unix.
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duplocale(3) [freebsd man page]

DUPLOCALE(3)						   BSD Library Functions Manual 					      DUPLOCALE(3)

NAME
duplocale -- duplicate an locale LIBRARY
Standard C Library (libc, -lc) SYNOPSIS
#include <xlocale.h> locale_t duplocale(locale_t locale); DESCRIPTION
Duplicates an existing locale_t returning a new locale_t that refers to the same locale values but has an independent internal state. Vari- ous functions, such as mblen(3) require a persistent state. These functions formerly used static variables and calls to them from multiple threads had undefined behavior. They now use fields in the locale_t associated with the current thread by uselocale(3). These calls are therefore only thread safe on threads with a unique per-thread locale. The locale returned by this call must be freed with freelocale(3). SEE ALSO
freelocale(3), localeconv(3), newlocale(3), querylocale(3), uselocale(3), xlocale(3) STANDARDS
This function conforms to IEEE Std 1003.1-2008 (``POSIX.1''). BUGS
Ideally, uselocale(3) should make a copy of the locale_t implicitly to ensure thread safety, and a copy of the global locale should be installed lazily on each thread. The FreeBSD implementation does not do this, for compatibility with Darwin. BSD
September 17, 2011 BSD

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