patch 8.2.3720: Vim9: Internal error when invoking closure in legacy context Commit: https://github.com/vim/vim/commit/69c76171f1a78b829196f72d7010fbe1d9ad2944 Author: Bram Moolenaar <Bram@vim.org> Date: Thu Dec 2 16:38:52 2021 +0000 patch 8.2.3720: Vim9: Internal error when invoking closure in legacy context Problem: Vim9: Internal error when invoking closure in legacy context. Solution: Give a more appropriate error message. (closes https://github.com/vim/vim/issues/9251)

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}\")