TagSet Key Type

Values of this type denote a (sorted) set of tags.

A set is different to a list, as no duplicate values are allowed.

Allowed values

Every tag must must begin with the number sign character (“#”, U+0023), followed by at least one printable character. Tags are separated by space characters.

All characters are mapped to their lower case values.

Query comparison

All comparisons are done case-sensitive, i.e. “#hell” will not be the prefix of “#Hello”.


Sorting is done by comparing the String values.