def escape(string: str) ->str:
    """Escape a string to be sent through Matrix, and format it using RoyalCode.

    Underlines are currently unsupported.

    Warning:
        Currently escapes everything, even items in code blocks."""
    return string.replace('[b]', '**').replace('[/b]', '**').replace('[i]', '_'
        ).replace('[/i]', '_').replace('[c]', '`').replace('[/c]', '`'
        ).replace('[p]', '```').replace('[/p]', '```')
