Add description about `crate` for parse_visibility's comment

This rule was introduced by https://github.com/rust-lang/rust/pull/45401.

diff --git a/src/libsyntax/parse/parser.rs b/src/libsyntax/parse/parser.rs
index f13bb7df0b44402228bc80842b078beaf69de8f0..6c119dd3e76a54d1ed8649a9de4b2eb5b70e5ccc 100644 (file)
--- a/src/libsyntax/parse/parser.rs
+++ b/src/libsyntax/parse/parser.rs
@@ -6282,7 +6282,7 @@ fn parse_struct_decl_field(&mut self) -> PResult<'a, StructField> {
         self.parse_single_struct_field(lo, vis, attrs)
     }
 
-    /// Parse `pub`, `pub(crate)` and `pub(in path)` plus shortcuts `pub(self)` for `pub(in self)`
+    /// Parse `pub`, `pub(crate)` and `pub(in path)` plus shortcuts `crate` for `pub(crate)`, `pub(self)` for `pub(in self)`
     /// and `pub(super)` for `pub(in super)`.  If the following element can't be a tuple (i.e. it's
     /// a function definition, it's not a tuple struct field) and the contents within the parens
     /// isn't valid, emit a proper diagnostic.