internationalized domain name http://www.unicode.org/faq/idn.html
In short: it is the job of the client to convert an IDN to Punycode. idn2 can do the convertion for you:
# idn2 www.köthe.de www.xn--kthe-5qa.de
Testcases: http://www.köthe.de http://www.köln.de http://abcdefghijklmnopqrstuvxyzæøå.dk/ mailto:echo@köthe.de
The status of IDN support in Debian:
Browser
Software |
IDN |
note (Debian bug; upstream bug) |
chromium |
|
|
epiphany (GNOME) |
|
URL showed broken |
Firefox/Iceweasel |
|
|
Konqueror (KDE) |
|
|
w3m |
|
|
lynx |
|
|
links |
|
|
links2 |
|
|
elinks |
|
|
Browsing IDN works.
Email client
Software |
IDN |
note (Debian bug; upstream bug) |
claws |
|
|
evolution |
|
|
kmail |
|
|
mutt |
|
|
Thunderbird/Icedove |
|
|
tin |
|
|
Still under construction.
other software
Software |
IDN |
note (Debian bug; upstream bug) |
|
support disabled: why? |
|
|
|
|
|
|
|
|
|
|
signing party caff |
? |
was a problem but not tested? 637222 |
|
|
|
|
|
Server software like apache, bind9, postfix, dovecot still works with ASCII because of punycode and is not needed to be tested/listed.
non Debian software
just for comparision
Software |
IDN |
Android Mail: |
? |
Android Browser: |
but URL shown in punycode |
Apple iOS+Mac: Mail |
|
Apple iOS+Mac: Safari |
|
Windows: IE 9++ |
|
Windows: Outlook 2010 |
|