Supplementary Multilingual Plane characters

[ghost]

Windows 10 October 2018 Update (build 1809) is supposed to finally allow the
console to support SMP (4 byte) characters:

http://blogs.msdn.microsoft.com/commandline/2018/11/15/windows-command-line

However in practice it is not working for me. I created a virtual machine:

http://microsoft.com/software-download/windows10ISO

and utilizing this character:

U+10480 OSMANYA LETTER ALEF
𐒀

http://fileformat.info/info/unicode/char/10480/index.htm

the output is 4 bytes 0xF0 0x90 0x92 0x80, which is displayed as 2 invalid
characters U+D801 and U+DC80 (surrogate pair) rather than a single valid
character U+10480. Am I doing something wrong or is this still not supported by
Windows console?

[DHowett-MSFT]

The console in 1809 can store SMP codepoints, but it cannot yet render them. Doing something about our legacy GDI renderer (which doesn't support much beyond UCS-2) is on our backlog.

A quick test would be to copy those two invalid characters into another application. When I do that, I get this (where my "other application" is the Run dialog):

[zadjii-msft]

This is effectively a dupe of #190.