Returns the symbol with modifications according to settings in the
    <isense> configuration section.

def _isense_builtin_symbol(symbol):
    """Returns the symbol with modifications according to settings in the
    <isense> configuration section.
    """
    if "builtin" in config.isense and "uppercase" in config.isense["builtin"]:
        if config.isense["builtin"]["uppercase"] == "true":
            return symbol.upper()
        else:
            return symbol.lower()
    else:
        #Make it lowercase by default
        return symbol.lower()