Ugh. Are unicode variable names allowed in C now? That's horrific.
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Source code is for humans, and thus should be written in whatever way makes it easiest to read, write, and understand for humans. If your language doesn't map onto ASCII, then Unicode support improves that goal. If your code is meant to directly implement some physics formula, then using the appropriate unicode characters might make it easier to read (and thus spot transcription errors, something I find far too often in physics simulations).
It's probably also a great way to introduce almost undetectable security vulnerabilities by using Unicode characters that look similar to each other but in fact are different.
Yes, that would probably be one way to do it.
> Which would violate the whole "Code is meant to be easily read by humans" thing.
I'd think someone who's deliberately and sneakily introducing a security vulnerability would want it to be undetectable, rather than easily readable.