---

paulstansifer · paulstansifer · commit 1b6824bfcd10 · 2012-08-23T15:13:53.000-07:00
yaml --- r: 23428 b: refs/heads/master c: 0698fc6 h: refs/heads/master v: v3
diff --git a/[refs] b/[refs]
@@ -1,5 +1,5 @@
 ---
-refs/heads/master: e9622f09aa0d8c70022f4bf3ea516d7349c2990c
+refs/heads/master: 0698fc665033f905470a4b98ea82bdb4f8342352
 refs/heads/snap-stage1: e33de59e47c5076a89eadeb38f4934f58a3618a6
 refs/heads/snap-stage3: cd6f24f9d14ac90d167386a56e7a6ac1f0318195
 refs/heads/try: ffbe0e0e00374358b789b0037bcb3a577cd218be
diff --git a/trunk/doc/tutorial.md b/trunk/doc/tutorial.md
@@ -2411,6 +2411,11 @@ The right-hand side of the `=>` follows the same rules as the left-hand side,
 except that `$` need only be followed by the name of the syntactic fragment
 to transcribe.
 
+The right-hand side must be surrounded by delimiters of some kind, and must be
+an expression; currently, user-defined macros can only be invoked in
+expression position (even though `macro_rules!` itself can be in item
+position).
+
 ## Multiplicity
 
 ### Invocation
