How to interpret RFC 2119 keywords:
- SHOULD: do this
- MAY: don't do this
- MUST: I'm going to open a can of whoop ass if you don't do this
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Why MAY is so negative? I think I saw it often used to indicate something that's a reasonable thing to do, but not something the RFC wanted to make a recommendation about either way (except to point out that the possibility exists and doesn't contravene any other requirements).
@robryk MAY is often used as a way to signal deprecations: things that can't be removed due to legacy interop reasons, but shouldn't be encouraged in modern implementations