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Rust emits a compiler warning if you use homoglyphs: https://blog.rust-lang.org/2021/06/17/Rust-1.53.0.html#unico...

You would still need to import the malicious trait in order for it to be extended. If you already have included a bad crate which has a bad trait, then why not replace the implementation of a well-named function. I can’t see a reason to use a homoglyph in the function name.

Similar-ish concerns have been raised before: https://www.lightbluetouchpaper.org/2021/11/01/trojan-source...

Remember that in Python you can mutate `globals` to change the meaning of arbitrary symbols. It seems like a lost cause if you are running a compromised library.