Hash :
f7f4cd99
Author :
Date :
2009-10-18T21:49:38
Document the alternative APIs for character classification.
@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