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

[Robie Basak]

Has this patch been accepted upstream? If not, I'm not sure it's
appropriate for Ubuntu to diverge from upstream behaviour on this.
Particularly because IDN type things are especially security sensitive.

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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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