Rust valid module names?

1

Is there a formal spec somewhere for what is considered valid module names?

2

Here's the spec on keywords, but I think that either way, prefixing the module name with r# would work:

mod r#mod {
    const FOO: u32 = 0;
}

More specifically, it seems that it is impossible to use any of the keywords in the language to name a module (Apart from union, or [only in 2015] dyn, try, async, and await), or a name that starts with a number unless the name starts with raw name identifier (Not sure on the name for it) r#.

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3

https://doc.rust-lang.org/stable/reference/items/modules.html

Says names are an IDENTIFIER. If you click it, it takes you to

https://doc.rust-lang.org/stable/reference/identifiers.html

Which describes the rules in detail.

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