function e_sh(string) {
  // Backslashes are doubled since we're inside Ruby code
  return string.replace(/(?=[^a-zA-Z0-9_.\\/\\-\\x7F-\\xFF\\n])/g, '\\\\').replace(/\\n/g, "'\\n'").replace(/^$/g, "''");
}

function click_external_link(evt) {
  TextMate.system("open " + e_sh(evt.srcElement.href), null);
}

myLink.addEventListener('click', click_external_link, false);