backtick escape issue for symbol about node-q HOT 3 OPEN

con.k(["`a", "`b", "`c"], function(err, res) {

    con.k(["`a", "`b", "`c"], function(err, res) {
        if (err) throw err;
        console.log("result", res); // Error: s
    });

    con.k(" `a", function(err, res) {
        if (err) throw err;
        console.log("result", res); // "result" a
    });
    con.k("`a", function(err, res) {
        if (err) throw err;
        console.log("result", res); // Error: type
    });

const nodeq = require("node-q");
[...]
con.k(nodeq. symbols(["a", "b", "c"]), function(err, res) {
	if (err) throw err;
	console.log("result", res); // 5
});