support Unicode 15.1 via utf8proc 2.9.0 #51799
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Actually, even with this PR we won't currently be able to use "edible mushroom" as an identifier, because we don't currently allow U+200D "Zero-width joiner" (ZWJ) as an identifier character, since it's in category Cf (Other, format). It might actually be a good idea to allow ZWJ in identifiers (but not as the first character), since that is used to "glue" together emojis to make new emoji. In particular, we should look at the whole "Emoji Profile" in UAX#31. I'll look into creating a separate PR for this. |
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For reference, that's issue #40071 |
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Similar to #47392, support Unicode 15.1 by bumping utf8proc to 2.9.0 (JuliaStrings/utf8proc#253).
This allows us to use 118 exciting new emoji characters as identifiers, including "edible mushroom"
"\U1f344\u200d\U1f7eb"(but still no superscript "q").Interestingly, they also updated the Unicode recommendations on programming-language identifiers (UAX#31) to finally "bless" identifiers beginning with
∂and∇and/or ending with numeric sub/superscripts. They still don't recommend nearly the range of identifiers accepted by Julia, however.