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Diffstat (limited to 'gnulib/doc/posix-functions/isalnum.texi')
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diff --git a/gnulib b/gnulib deleted file mode 160000 -Subproject 443bc5ffcf7429e557f4a371b0661abe98ddbc1 diff --git a/gnulib/doc/posix-functions/isalnum.texi b/gnulib/doc/posix-functions/isalnum.texi new file mode 100644 index 0000000..a19844f --- /dev/null +++ b/gnulib/doc/posix-functions/isalnum.texi @@ -0,0 +1,40 @@ +@node isalnum +@section @code{isalnum} +@findex isalnum + +POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/isalnum.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 does not support +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 four alternative APIs: + +@table @code +@item c_isalnum +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 iswalnum +This function operates in a locale dependent way, on wide characters. In +order to use it, you first have to convert from multibyte to wide characters, +using the @code{mbrtowc} function. It is provided by the Gnulib module +@samp{wctype}. + +@item mb_isalnum +This function operates in a locale dependent way, on multibyte characters. +It is provided by the Gnulib module @samp{mbchar}. + +@item uc_is_alnum +This function operates in a locale independent way, on Unicode characters. +It is provided by the Gnulib module @samp{unictype/ctype-alnum}. +@end table |