New upstream version 1.12.0+dfsg1

[rustc.git] / src / doc / book / mutability.md

diff --git a/src/doc/book/mutability.md b/src/doc/book/mutability.md
index e46271511462449930ee4859ae7bbd3505d34a36..a0a49d55e105740572194aedfd870f25534b1a50 100644 (file)
--- a/src/doc/book/mutability.md
+++ b/src/doc/book/mutability.md
@@ -62,8 +62,8 @@ Note that here, the `x` is mutable, but not the `y`.
 # Interior vs. Exterior Mutability
 
 However, when we say something is ‘immutable’ in Rust, that doesn’t mean that
-it’s not able to be changed: we mean something has ‘exterior mutability’. Consider,
-for example, [`Arc<T>`][arc]:
+it’s not able to be changed: we are referring to its ‘exterior mutability’ that
+in this case is immutable. Consider, for example, [`Arc<T>`][arc]:
 
 ```rust
 use std::sync::Arc;