patch 8.0.1334: splitting a window with a WinBar damages window layout commit https://github.com/vim/vim/commit/3167c3e7010ac7e2fd7d3aa198dd2d1dcff8ecc8 Author: Bram Moolenaar <Bram@vim.org> Date: Sat Nov 25 14:19:43 2017 +0100 patch 8.0.1334: splitting a window with a WinBar damages window layout Problem: Splitting a window with a WinBar damages window layout. (Lifepillar) Solution: Take the winbar into account when computing the new window position. Add WINBAR_HEIGHT().

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}\")