commit https://github.com/vim/vim/commit/156919f99afd1ac11d19d4270afbc1afb7245640 Author: Bram Moolenaar <Bram@vim.org> Date: Sat Oct 15 20:46:20 2016 +0200 patch 8.0.0039 Problem: When Vim 8 reads an old viminfo and exits, the next time marks are not read from viminfo. (Ned Batchelder) Solution: Set a mark when it wasn't set before, even when the timestamp is zero. (closes #1170)

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}\")