 [det]uri_iri(+URI, 
-IRI)
[det]uri_iri(-URI, 
+IRI)Convert between a URI, encoded in US-ASCII and an IRI. 
An IRI is a fully expanded Unicode string. Unicode strings 
are first encoded into UTF-8, after which %-encoding takes place.
[det]uri_iri(+URI, 
-IRI)
[det]uri_iri(-URI, 
+IRI)Convert between a URI, encoded in US-ASCII and an IRI. 
An IRI is a fully expanded Unicode string. Unicode strings 
are first encoded into UTF-8, after which %-encoding takes place.
- Errors
- syntax_error(Culprit)in mode (+,-) if URI is 
not a legally percent-encoded UTF-8 string.