[Bug 1771109] Re: Domain names containing emoji characters are not supported in console applications

[Simon Josefsson]

Sorry, to clarify: I think curl already changed here too, since the curl
command now works.

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Title:
  Domain names containing emoji characters are not supported in console
  applications

Status in glibc package in Ubuntu:
  New
Status in libidn2 package in Ubuntu:
  New
Status in libidn2-0 package in Ubuntu:
  New

Bug description:
  Ubuntu release:
  user at machine:~$ lsb_release -rd
  Description:	Ubuntu 18.04 LTS
  Release:	18.04

  Description:
  What I did: Attempted to access a domain name containing an emoji character using curl and other terminal applications
  What I expected to happen: Successfully interact with the server represented by said domain name
  What happened instead: Got error saying that the domain contains a disallowed character.
  Notes: Accessing such a domain using firefox works normally. Interacting with the domain using its punycode form works just fine. Accessing IDNs containing national characters (such as hxxp://ąćęłńóśźż.pl/) works as intended.

  Steps to reproduce:
  user at machine:~$ curl 📙.la
  curl: (3) Failed to convert 📙.la to ACE; string contains a disallowed character

  Disclosure: I own such a domain name, but it is not the domain
  provided in the example.

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