patch 8.1.0889: MS-Windows: a channel write may hang commit https://github.com/vim/vim/commit/6524068ff3252f1373807f1ebfde21408cef624e Author: Bram Moolenaar <Bram@vim.org> Date: Sun Feb 10 22:23:26 2019 +0100 patch 8.1.0889: MS-Windows: a channel write may hang Problem: MS-Windows: a channel write may hang. Solution: Check for WriteFile() not writing anything. (Yasuhiro Matsumoto, closes #3920)

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}\")