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Add [ to the FOLLOW(ty) in macro future-proofing rules. #1462

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Jan 22, 2016
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Add [ to the FOLLOW(ty) in macro future-proofing rules. #1462

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c39a7cb
Add `[` to the FOLLOW(ty) in macro future-proofing rules.
pnkfelix Jan 14, 2016
6fef0b3
added self-referential note to the Edit History for RFC 550.
pnkfelix Jan 14, 2016
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5 changes: 4 additions & 1 deletion text/0550-macro-future-proofing.md
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Expand Up @@ -414,7 +414,7 @@ The current legal fragment specifiers are: `item`, `block`, `stmt`, `pat`,

- `FOLLOW(pat)` = `{FatArrow, Comma, Eq, Or, Ident(if), Ident(in)}`
- `FOLLOW(expr)` = `{FatArrow, Comma, Semicolon}`
- `FOLLOW(ty)` = `{OpenDelim(Brace), Comma, FatArrow, Colon, Eq, Gt, Semi, Or, Ident(as), Ident(where)}`
- `FOLLOW(ty)` = `{OpenDelim(Brace), Comma, FatArrow, Colon, Eq, Gt, Semi, Or, Ident(as), Ident(where), OpenDelim(Bracket)}`
- `FOLLOW(stmt)` = `FOLLOW(expr)`
- `FOLLOW(path)` = `FOLLOW(ty)`
- `FOLLOW(block)` = any token
Expand Down Expand Up @@ -481,6 +481,9 @@ reasonable freedom and can be extended in the future.

[RFC issue 1336]: https://github.com/rust-lang/rfcs/issues/1336

- Updated by https://github.com/rust-lang/rfcs/pull/1462, which added
open square bracket into the follow set for types.

# Appendices

## Appendix A: Algorithm for recognizing valid matchers.
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