The wctype.texi file lists the "blank" argument problem both in the section "fixed by Gnulib" and in the section "not fixed by Gnulib".
2023-08-29 Bruno Haible <br...@clisp.org> wctype: Fix documentation (mistake 2023-07-26). * doc/posix-functions/wctype.texi: The "blank" argument problem on mingw is now worked around by Gnulib. diff --git a/doc/posix-functions/wctype.texi b/doc/posix-functions/wctype.texi index af35ed1f35..957403ccee 100644 --- a/doc/posix-functions/wctype.texi +++ b/doc/posix-functions/wctype.texi @@ -34,7 +34,4 @@ However, the Gnulib function @code{c32_get_type_test}, provided by Gnulib module @code{c32_get_type_test}, operates on 32-bit wide characters and therefore does not have this limitation. -@item -This function does not support the @code{"blank"} argument on some platforms: -mingw. @end itemize