Method adjustCase

ext/catch.hpp:3518–3520

        }
    private:
        std::string adjustCase( std::string const& str ) const {
            return m_caseSensitivity == CaseSensitive::No ? toLower( str ) : str;
        }
        CaseSensitive::Choice m_caseSensitivity;
        WildcardPosition m_wildcard;
        std::string m_pattern;