proc_macro: Generalize `FromIterator` impl While never intended to be stable we forgot that trait impls are insta-stable! This construction of `FromIterator` wasn't our first choice of how to stabilize the impl but our hands are tied at this point, so revert back to the original definition of `FromIterator` before #49597 Closes #49725 |
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| Cargo.toml | ||
| diagnostic.rs | ||
| lib.rs | ||
| quote.rs | ||