Merge pull request #1113 from nkaretnikov/macros-fixes

Minor fixes for the macros chapter
rust-lang · Jan 19, 2019 · a5ed6aa · a5ed6aa
2 parents 0c84f23 + 81739b4
commit a5ed6aa
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diff --git a/src/macros/dry.md b/src/macros/dry.md
@@ -57,7 +57,7 @@ mod test {
  }
  }
 
- // Test `add_assign`, `mul_assign` and `sub_assign`
+ // Test `add_assign`, `mul_assign`, and `sub_assign`.
  test!(add_assign, 1u32, 2u32, 3u32);
  test!(mul_assign, 2u32, 3u32, 6u32);
  test!(sub_assign, 3u32, 2u32, 1u32);

diff --git a/src/macros/dsl.md b/src/macros/dsl.md
@@ -39,3 +39,6 @@ Output:
 This was a very simple example, but much more complex interfaces have been
 developed, such as [`lazy_static`](https://crates.io/crates/lazy_static) or
 [`clap`](https://crates.io/crates/clap).
+
+Also, note the two pairs of braces in the macro. The outer ones are
+part of the syntax of `macro_rules!`, in addition to `()` or `[]`.