synopsis.txt

= Synopsis =

IRIs are essentially the Unicode superset of (ASCII) URIs, combined with an ASCII embedding via UTF-8.

 * [http://rfc.net/rfc3987.html RFC 3987]
 * [http://www.w3.org/International/O-URL-and-ident.html Internationalized Resource Identifiers (IRIs)] (W3C)

The least you should know:

 * [http://rfc.net/rfc3987.html#s3. RFC 3987 §3] (IRI/URI conversion)
 * [http://www.w3.org/TR/REC-html40/appendix/notes.html#h-B.2.1 HTML4 B.2.1]: Non-ASCII characters in URI attribute values

= Browser support =

[http://www.sw.it.aoyama.ac.jp/2007/pub/IUC31-iri/Presentation.html IRIs and IDNs: Testing, Implementations, and Specification Evolvement] (2007)

Controlling options:

 * '''Firefox''': [https://bugzilla.mozilla.org/show_bug.cgi?id=124042 Bug 124042] (2002), `network.standard-url.`{[http://kb.mozillazine.org/Network.standard-url.encode-utf8 encode-utf8]`,`[http://kb.mozillazine.org/Network.standard-url.escape-utf8 escape-utf8]`}`
 * '''Internet Explorer''': ''Tools → Internet Options → Advanced → Browsing → Always send URLs as UTF-8''
 * '''Opera''': ''Tools → Preferences → Advanced → Network → Encode international Web addresses with UTF-8''

= Subtleties =

 * Normalization, comparison, bidirectional text
 * Internationalized Domain Names ([http://rfc.net/rfc3490.html RFC 3490])

= Implementation =

See #2409.