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| -rw-r--r-- | src/doc/grammar.md | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/doc/grammar.md b/src/doc/grammar.md index fac488d9c4a..be64379b516 100644 --- a/src/doc/grammar.md +++ b/src/doc/grammar.md @@ -172,6 +172,11 @@ token : simple_token | ident | literal | symbol | whitespace token ; Each of these keywords has special meaning in its grammar, and all of them are excluded from the `ident` rule. +Not all of these keywords are used by the language. Some of them were used +before Rust 1.0, and were left reserved once their implementations were +removed. Some of them were reserved before 1.0 to make space for possible +future features. + ### Literals ```antlr |