patch 8.1.0767: when deleting lines at the bottom signs are misplaced commit https://github.com/vim/vim/commit/c771bf901622064dc27421b04853e16b6914a295 Author: Bram Moolenaar <Bram@vim.org> Date: Thu Jan 17 17:36:45 2019 +0100 patch 8.1.0767: when deleting lines at the bottom signs are misplaced Problem: When deleting lines at the bottom signs are misplaced. Solution: Properly update the line number of signs at the end of a buffer after a delete/undo operation. (Yegappan Lakshmanan, closes #3798)

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}\")