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-rw-r--r--library/core/src/primitive.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/library/core/src/primitive.rs b/library/core/src/primitive.rs
index 435e211bac8..81a72118614 100644
--- a/library/core/src/primitive.rs
+++ b/library/core/src/primitive.rs
@@ -33,7 +33,7 @@
 //!
 //! We also used `::core` instead of `core`, because `core` can be
 //! shadowed, too. Paths, starting with `::`, are searched in
-//! [extern prelude].
+//! the [extern prelude] since Edition 2018.
 //!
 //! [extern prelude]: https://doc.rust-lang.org/nightly/reference/names/preludes.html#extern-prelude