Has there been any changes in the upstream which we should be
aware of?
None that I’m aware of.
Similar issues are still open in the libyaml repo.
The code dealing with printable unicode characters in libyaml
remains the same, it doesn’t deal with codepoints outside of
the Basic Multilingual Plane (every code point > 0xFFFF)
On another note, since we're switching to Lua emitter as the
defualt one quite soon, we can perhaps close #4090 as won't fix
rather than bother improving libyaml.
Related to tarantool/tarantool#4090
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Konstantin Osipov, Moscow, Russia