@pattern

The attribute pattern specifies a regular expression pattern to be searched for or matched. TAN regular expressions include an extended syntax, most noted by the special escape character \k{}.

For more see the section called “Regular Expressions” and https://www.w3.org/TR/xpath-functions-30/#regex-syntax

Formal Definition

Defined at: TAN-core.rng

Used by: ~func-replace, ~defn-tok-def


[Note]Note

Taken from ringoroses.div.1