instead of merging all =-signs into one dot, which can then not be
decoded. Test string:
SELECT * from version where "isHelper" order by "order" desc
will be encode to
U0VMRUNUICogZnJvbSB2ZXJzaW9uICB3aGVyZSAiaXNIZWxwZXIiIG9yZGVyIGJ5ICJvcmRlciIgZGVzYw.
missing a dot at the end making it undecodable.
Since =-signs only appear at the end anyway, we don't need the explicit
'$' in the regexp