Document syntax reserved in Rust 2021#1128

Merged

ehuss merged 5 commits intorust-lang:masterfrom

mattheww:2022-01_reserved_syntax

Jan 6, 2022

Commits on Jan 3, 2022

Commits on Jan 4, 2022

Say that `_#`, `_'`, and `_"` are reserved prefixes
mattheww
committed

Commits on Jan 5, 2022

Add a Lexer rules block for reserved prefixes
mattheww
committed

Commits on Jan 6, 2022

Fix lexer edition.
ehuss
committed