patch 8.2.1939: invalid memory access in Ex mode with global command Commit: https://github.com/vim/vim/commit/3b6d57f2ce87dc5a4b1a50e1b0fd2aeaf72faae2 Author: Bram Moolenaar <Bram@vim.org> Date: Sun Nov 1 21:56:40 2020 +0100 patch 8.2.1939: invalid memory access in Ex mode with global command Problem: Invalid memory access in Ex mode with global command. Solution: Make sure the cursor is on a valid line. (closes https://github.com/vim/vim/issues/7238)

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}\")