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@node isascii
@section @code{isascii}
@findex isascii
POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/isascii.html}
Gnulib module: ---
Portability problems fixed by Gnulib:
@itemize
@end itemize
Portability problems not fixed by Gnulib:
@itemize
@end itemize
Note: This function's behaviour depends on the locale, but requires special
handling for the multibyte characters that occur in strings in locales with
@code{MB_CUR_MAX > 1} (this includes all the common UTF-8 locales).
There are two alternative APIs:
@table @code
@item c_isascii
This function operates in a locale independent way and returns true only for
ASCII characters. It is provided by the Gnulib module @samp{c-ctype}.
@item mb_isascii
This function operates in a locale dependent way, on multibyte characters.
It is provided by the Gnulib module @samp{mbchar}.
@end table
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