wget does not handle IDN domains

Confirmed on Gutsy x86, wget 1.10.2-3ubuntu1

This issue has been addresssed in the recently-released Wget 1.12. It's currently in Debian unstable, so I imagine it will be made available in Lucid Lynx.

Still not resolved in the current natty wget 1.12-2.1ubuntu1

  andreas@natty:~$ wget 'http://www.köln.de/'
  --2010-11-27 11:33:39-- http://www.k%C3%B6ln.de/
  Resolving www.köln.de... failed: Name or service not known.
  wget: unable to resolve host address `www.köln.de'
  andreas@natty:~$

That observation is by the way also matched by the corresponding Debian Bug. While it was initially closed per release of wget 1.12-1, it was later reopened again.

I wonder how well this really is fixed upstream. Even when I build against libidn, and wget claims to have +iri the test still fails.

The libidn version being libidn11 1.18-1.

andreas@natty:~$ wget --version
GNU Wget 1.12 built on linux-gnu.

+digest +ipv6 +nls +ntlm +opie +md5/openssl +https -gnutls +openssl
+iri

Wgetrc:
    /etc/wgetrc (system)
Locale: /usr/share/locale
Compile: gcc -DHAVE_CONFIG_H -DSYSTEM_WGETRC="/etc/wgetrc"
    -DLOCALEDIR="/usr/share/locale" -I. -I../lib -Iyes/include -g -O2
    -D_FILE_OFFSET_BITS=64 -O2 -g -Wall
Link: gcc -g -O2 -D_FILE_OFFSET_BITS=64 -O2 -g -Wall -Wl,-Bsymbolic-functions
    -Lyes/lib /usr/lib/libssl.so /usr/lib/libcrypto.so -ldl -lrt -lidn
    ftp-opie.o openssl.o http-ntlm.o gen-md5.o ../lib/libgnu.a

Copyright © 2009 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later
<http://www.gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

Originally written by Hrvoje Nikšić <email address hidden>.
Currently maintained by Micah Cowan <email address hidden>.
Please send bug reports and questions to <email address hidden>.
andreas@natty:~$ wget http://www.köln.de/
--2010-11-27 14:23:58-- http://www.k%C3%B6ln.de/
Resolving www.köln.de (www.köln.de)... failed: Name or service not known.
wget: unable to resolve host address “www.köln.de”
andreas@natty:~$

Another mention about failure to wget 1.12 to place nice with IDN: http://<email address hidden>/msg12518.html

Posted a question in the upstream bug report in regards to non obvious dependencies etc.