commit https://github.com/vim/vim/commit/7707344ddec9069b495b2a5ed41f2104466fc88b Author: Bram Moolenaar <Bram@vim.org> Date: Sat Feb 13 23:23:53 2016 +0100 patch 7.4.1315 Problem: Using a channel handle does not allow for freeing it when unused. Solution: Add the Channel variable type.

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}\")