Way to Use Parenthesis inside Kirbytag?

Kind of related is the problem of multiple attributes:

As per the example in documentation:

(wikipedia: Germany text:Here is some text)

That is easy. Wikipedia => “Germany” and text => “Here is some text”

What if I wanted to have another case like
(at1:This attribute has:a code at2:and something test2:something)
and want at1=>This attribute has:a code at2:and something test2=>something

Perhaps it would be an idea to have (enforce?) a little more structure on the kirbytags with attributes. At least until separators can be escaped.