The function c32snrtombs is like wcsnrtombs, except that it takes a char32_t[]
string as argument instead of a wchar_t[] string.


2020-01-10  Bruno Haible  <bruno@clisp.org>

	c32snrtombs: Add tests.
	* tests/test-c32snrtombs.c: New file, based on tests/test-wcsnrtombs.c.
	* tests/test-c32snrtombs-1.sh: New file, based on
	tests/test-wcsnrtombs1.sh.
	* tests/test-c32snrtombs-2.sh: New file, based on
	tests/test-wcsnrtombs2.sh.
	* tests/test-c32snrtombs-3.sh: New file, based on
	tests/test-wcsnrtombs3.sh.
	* tests/test-c32snrtombs-4.sh: New file, based on
	tests/test-wcsnrtombs4.sh.
	* modules/c32snrtombs-tests: New file, based on
	modules/wcsnrtombs-tests.

	c32snrtombs: New module.
	* lib/uchar.in.h (c32snrtombs): New declaration.
	* lib/wcsnrtombs-impl.h: Parameterize: Use macros FUNC, SCHAR_T,
	INTERNAL_STATE, WCRTOMB.
	* lib/wcsnrtombs.c (FUNC, SCHAR_T, INTERNAL_STATE, WCRTOMB): New macros.
	* lib/c32snrtombs.c: New file.
	* m4/uchar.m4 (gl_UCHAR_H_DEFAULTS): Initialize GNULIB_C32SNRTOMBS.
	* modules/uchar (Makefile.am): Substitute GNULIB_C32SNRTOMBS.
	* modules/c32snrtombs: New file.
	* tests/test-uchar-c++.cc: Test the signature of c32snrtombs.
	* doc/posix-functions/wcsnrtombs.texi: Mention the new module.