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Is this the sort of thing you only need to know about if building/maintaining compilers? I ask because I don't know what that means from a practical perspective. I'm familiar with Ferrous systems from their work on probe-rs, defmt, and flip-link, which are exquisite libraries / tools.

edit: I think this is a bot or troll account.

Rust never had a goal of having well defined spec. It all depends on what ecosystem wants.

In lieu of that it didn't fuck up.