`indicators`, `i`: Create blocky emoji text.

    **Usage:** `indicators message`

    If you don't give this command a message, it will find the most recently
    sent message and process it instead.

    **Example:**
        >>> `indicators ak47`
        :regional_indicator_a: :regional_indicator_k: 4️⃣ 7️⃣

    Alphanumeric characters, +, -, $, ?, !, and spaces are converted. Other
    characters are ignored.