patch 8.2.4162: Vim9: no error for redefining function with export Commit: https://github.com/vim/vim/commit/9c7cae66bc21a3dc5c6e60cd64216ce7c9073003 Author: Bram Moolenaar <Bram@vim.org> Date: Thu Jan 20 19:10:25 2022 +0000 patch 8.2.4162: Vim9: no error for redefining function with export Problem: Vim9: no error for redefining function with export. Solution: Check for existing function with/without prefix. (closes https://github.com/vim/vim/issues/9577)

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}\")