--- a/spec/util_ringbuffer_spec.lua	Tue Jun 23 17:59:24 2020 +0200
+++ b/spec/util_ringbuffer_spec.lua	Wed Jun 24 12:34:20 2020 +0100
@@ -92,5 +92,12 @@
 				end
 			end
 		end);
+
+		it("works with characters > 127", function ()
+			local b = rb.new();
+			b:write(string.char(0, 140));
+			local r = { b:byte(1, 2) };
+			assert.same({ 0, 140 }, r);
+		end);
 	end);
 end);