Finish migrating attribute syntax #13162
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(Needs a rebase.) |
This removes the `attr` matcher and adds a `meta` matcher. The previous `attr` matcher is now ambiguous because it doesn't disambiguate whether it means inner attribute or outer attribute. The new behavior can still be achieved by taking an argument of the form `#[$foo:meta]` (the brackets are part of the macro pattern). Closes rust-lang#13067
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This is the rebasing of #13068 with a fix for #13067 as the first commit.