[Pkg-gnupg-maint] Bug#537122: gnupg cannot handle non-ascii domains like köthe.de (IDN Domain)

[Noèl Köthe]

Package: gnupg
Version: 1.4.9-4
Severity: normal

Hello,

I want to use my domain/email address noel (at) köthe.de as UID:

german:
Befehl> adduid
Ihr Name ("Vorname Nachname"): Noèl Köthe
Email-Adresse: noel at köthe.de
Diese Email-Adresse ist ungültig

translated:
command> adduid
Your name: Noèl Köthe
email-address: noel at köthe.de
Not a valid email address

The non-ascii character in the domain is valid. Its a IETF
Internationalized Domain Names (IDN).  Browser and MUA
will use punycode (http://en.wikipedia.org/wiki/Punycode) internaly but
the user will see it as above.

The check is done in gnupg-1.4.9/g10/misc.c

/* Check whether NAME represents a valid mailbox according to
   RFC822. Returns true if so. */
int
is_valid_mailbox (const char *name)
{
  return !( !name
            || !*name
            || has_invalid_email_chars (name)
            || string_count_chr (name,'@') != 1
            || *name == '@'
            || name[strlen(name)-1] == '@'
            || name[strlen(name)-1] == '.'
            || strstr (name, "..") );
}


Thank you.


-- System Information:
Debian Release: squeeze/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.30-1-amd64 (SMP w/2 CPU cores)
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages gnupg depends on:
ii  gpgv                   1.4.9-4           GNU privacy guard - signature veri
ii  libbz2-1.0             1.0.5-3           high-quality block-sorting file co
ii  libc6                  2.9-20            GNU C Library: Shared libraries
ii  libreadline5           5.2-5             GNU readline and history libraries
ii  libusb-0.1-4           2:0.1.12-13       userspace USB programming library
ii  zlib1g                 1:1.2.3.3.dfsg-14 compression library - runtime

Versions of packages gnupg recommends:
ii  libldap-2.4-2                 2.4.15-1.1 OpenLDAP libraries

Versions of packages gnupg suggests:
ii  eog                        2.26.2-1      Eye of GNOME graphics viewer progr
pn  gnupg-doc                  <none>        (no description available)
ii  imagemagick                7:6.5.1.0-1.1 image manipulation programs
ii  libpcsclite1               1.5.4-1       Middleware to access a smart card 

-- no debconf information