commit https://github.com/vim/vim/commit/72defda84eb26be9e2ade56c7877b912f818026e Author: Bram Moolenaar <Bram@vim.org> Date: Sun Jan 17 18:04:33 2016 +0100 patch 7.4.1119 Problem: argidx() has a wrong value after ":%argdelete". (Yegappan Lakshmanan) Solution: Correct the value of w_arg_idx. Add a test.

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}\")