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surely it should be #[DONT_PANIC] in large friendly letters.

Hah, nice one. I think we could get the unicode folks to accept an emoji form of this: https://thebullelephant.com/wp-content/uploads/2016/12/dontp... and alternately accept `#[$UNICODE_FOR_SAID_EMOJI]`.

Rust doesn’t allow emoji in identifiers, following the UAX #31 rules. It would require a significant break in someone’s tradition to get such a thing through. … quite apart from the implausibility of getting such a character into Unicode in the first place.

Or implied by the #[keep_calm] attribute

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