auto merge of #12066 : huonw/rust/show2, r=alexcrichton

- Convert the formatting traits to `&self` rather than `_: &Self`
- Rejig `syntax::ext::{format,deriving}` a little in preparation
- Implement `#[deriving(Show)]`

2 files changed, 4 insertions, 3 deletions

diff --git a/src/doc/rust.md b/src/doc/rust.md
index 21c2e5eefec..bae8f562af5 100644
--- a/src/doc/rust.md
+++ b/src/doc/rust.md
@@ -1969,13 +1969,14 @@ impl<T: Eq> Eq for Foo<T> {
 Supported traits for `deriving` are:
 
 * Comparison traits: `Eq`, `TotalEq`, `Ord`, `TotalOrd`.
-* Serialization: `Encodable`, `Decodable`. These require `extra`.
+* Serialization: `Encodable`, `Decodable`. These require `serialize`.
 * `Clone` and `DeepClone`, to perform (deep) copies.
 * `IterBytes`, to iterate over the bytes in a data type.
 * `Rand`, to create a random instance of a data type.
 * `Default`, to create an empty instance of a data type.
 * `Zero`, to create an zero instance of a numeric data type.
-* `FromPrimitive`, to create an instance from a numeric primitve.
+* `FromPrimitive`, to create an instance from a numeric primitive.
+* `Show`, to format a value using the `{}` formatter.
 
 ### Stability
 One can indicate the stability of an API using the following attributes:
diff --git a/src/doc/tutorial.md b/src/doc/tutorial.md
index 5d60b90a8f3..a5426c20619 100644
--- a/src/doc/tutorial.md
+++ b/src/doc/tutorial.md
@@ -2523,7 +2523,7 @@ enum ABC { A, B, C }
 
 The full list of derivable traits is `Eq`, `TotalEq`, `Ord`,
 `TotalOrd`, `Encodable` `Decodable`, `Clone`, `DeepClone`,
-`IterBytes`, `Rand`, `Default`, `Zero`, and `ToStr`.
+`IterBytes`, `Rand`, `Default`, `Zero`, `FromPrimitive` and `Show`.
 
 # Crates and the module system