8867ba19de
syntax: Unsupport `foo! bar { ... }` macros in the parser
Their support in expansion was removed in https://github.com/rust-lang/rust/pull/61606.
Also un-reserve `macro_rules` as a macro name, there's no ambiguity between `macro_rules` definitions and macro calls (it also wasn't reserved correctly).
cc https://github.com/rust-lang-nursery/wg-grammar/issues/51
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| .. | ||
| tt | ||
| base.rs | ||
| build.rs | ||
| derive.rs | ||
| expand.rs | ||
| placeholders.rs | ||
| source_util.rs | ||