test.js

CmdUtils.CreateCommand({
    name: "regexp",
    takes: {
        regexp: noun_arb_text
    },
    modifiers: {
        with: noun_arb_text
    },
    execute: function(userRegexp, mods) {
        var text = mods.with.text || "";
        var regexp = new RegExp(userRegexp.text, 'gi');
        if (regexp.test(text)) {
            displayMessage("Matched!");
        } else {
            displayMessage("Not Matched!");
        }
    },

    preview: "Tries to match an regular expression with an text"
})