patch 8.2.4829: a key may be simplified to NUL Commit: https://github.com/vim/vim/commit/17c95d9608370559441bb73941ba6d9a4b6b26bd Author: zeertzjq <zeertzjq@outlook.com> Date: Tue Apr 26 12:51:07 2022 +0100 patch 8.2.4829: a key may be simplified to NUL Problem: A key may be simplified to NUL. Solution: Use K_ZERO instead. Use macros instead of hard coded values. (closes #10290)

TYPEMAP
VIWIN	T_VIOBJNOMUNGE
VIBUF	T_VIOBJNOMUNGE

INPUT
T_VIOBJNOMUNGE
	if (sv_isa($arg, \"${ntype}\")) {
	    IV tmp = SvIV((SV*)SvRV($arg));
	    $var = INT2PTR($type, tmp);
	    if (!tmp)
		croak(\"$ntype no longer exists\");
	}
	else
	    croak(\"$var is not of type ${ntype}\")