I’m thinking of writing a package called “CàiSemiprimes” or “蔡Semiprimes” (Cài is a mathematician). Is it legal for a package name to have a non-ASCII character? To start with a character that does not have an upper/lowercase distinction?

Can package names contain non-ASCII characters?

phma October 8, 2025, 8:38am 7

Which, as I pointed out above, don’t mention ASCII.

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