[swift-users] emoji in source code failed to compile in linux ubuntu

[Dmitri Gribenko]

On Fri, Dec 4, 2015 at 11:25 AM, Jens Alfke <jens at mooseyard.com> wrote:
> In other words, during UTF-8 encoding, some Unicode codepoints need to be broken into surrogate pairs. Therefore a UTF-8 decoder needs to recognize surrogate pairs and reassemble them into a single codepoint. That’s what’s not happening in this case.

No, surrogate code points can not appear in a UTF-8 stream, they can
only appear in UTF-16.

http://www.unicode.org/versions/Unicode8.0.0/ch02.pdf page 30, table 2-3.

Dmitri

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