Method isCountKey

content_scripts/mode_key_handler.js:96–100

(keyChar)

  // This tests whether keyChar is a digit (and accounts for pass keys).
  isCountKey(keyChar) {
    return keyChar &&
      ((this.countPrefix > 0 ? "0" : "1") <= keyChar && keyChar <= "9") &&
      !this.isPassKey(keyChar);
  }

  // Keystrokes are *never* considered pass keys if the user has begun entering a command. So, for
  // example, if 't' is a passKey, then the "t"-s of 'gt' and '99t' are neverthless handled as