commit https://github.com/vim/vim/commit/4d585022023b96f6507e8cae5ed8fc8d926f5140 Author: Bram Moolenaar <Bram@vim.org> Date: Thu Apr 14 19:50:22 2016 +0200 patch 7.4.1740 Problem: syn-cchar defined with matchadd() does not appear if there are no other syntax definitions which matches buffer text. Solution: Check for startcol. (Ozaki Kiichi, haya14busa, closes https://github.com/vim/vim/issues/757)

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}\")