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−@c Documentation of gnulib module 'c-strstr'.
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−
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−@c Copyright (C) 2008-2015 Free Software Foundation, Inc.
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−
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−@c Permission is granted to copy, distribute and/or modify this document
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−@c under the terms of the GNU Free Documentation License, Version 1.3 or
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−@c any later version published by the Free Software Foundation; with no
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−@c Invariant Sections, no Front-Cover Texts, and no Back-Cover
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−@c Texts.  A copy of the license is included in the ``GNU Free
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−@c Documentation License'' file as part of this distribution.
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−
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−The @code{c-strstr} module contains a substring search function operating
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−on single-byte character strings, that operate as if the locale encoding
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−was ASCII.
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−(The "C" locale on many systems has the locale encoding "ASCII".)
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−
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−The function is:
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−@smallexample
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−extern char *c_strstr (const char *haystack, const char *needle);
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−@end smallexample
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−
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−Note: The function @code{strstr} from @code{<string.h>} supports only
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−unibyte locales; for multibyte locales, you need the function
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−@code{mbsstr}.