Javascript email list parser with display name

parse_email_list.js

function display_name(text) {
    /* Remove all quotes                                                                                                                                     
       Remove whitespace, brackets, and commas from the ends. */
    return text.replace(/(^[\s,>]+)|"|([\s,<]+$)/g, '');
}

function emails(addr_list) {
    /* Regex source:                                                                                                                                         
       https://html.spec.whatwg.org/multipage/forms.html#valid-e-mail-address                                                                                
    */
    var email_re = /[a-zA-Z0-9.!#$%&'*+\/=?^_`{|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*/g;
    var emails = [], match, idx = 0;
    while (match = email_re.exec(addr_list)) {
        var display;
        if (display = display_name(addr_list.substring(idx, match['index']))) {
            emails.push('"' + display + '" ' + '<' + match[0] + '>');
        }
        else {
            emails.push(match[0]);
        }
        idx = match['index'] + match[0].length;
    }
    return emails;
}

var test = 'a b c a@a.com,, ,   b@b.com <c@c.com>,,, ",hello world, inc," <a@a.com> slkjdsf.slkj+foo@gmail.com ';
console.log(emails(test));