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added macro_rules to weak keywords #1008

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Apr 21, 2021
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added macro_rules to weak keywords #1008

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1 change: 1 addition & 0 deletions src/keywords.md
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Expand Up @@ -95,6 +95,7 @@ The following keywords are reserved beginning in the 2018 edition.
These keywords have special meaning only in certain contexts. For example, it
is possible to declare a variable or method with the name `union`.

* `macro_rules` is used to create custom [macros].
* `union` is used to declare a [union] and is only a keyword when used in a
union declaration.
* `'static` is used for the static lifetime and cannot be used as a [generic
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