---

yaml
---
r: 20983
b: refs/heads/snap-stage3
c: 1ffaceb
h: refs/heads/master
i:
  20981: 9fa8ccb
  20979: df8206f
  20975: 789e67e
v: v3

Author: brson

[refs]

@@ -1,7 +1,7 @@
 ---
 refs/heads/master: e430a699f2c60890d9b86069fd0c68a70ece7120
 refs/heads/snap-stage1: e33de59e47c5076a89eadeb38f4934f58a3618a6
-refs/heads/snap-stage3: 4f98e80db1179d63395d2a4ccd432b5590d12d61
+refs/heads/snap-stage3: 1ffaceb3c842963ba41ce4259afaa20b3533dffc
 refs/heads/try: ffbe0e0e00374358b789b0037bcb3a577cd218be
 refs/tags/release-0.1: 1f5c5126e96c79d22cb7862f75304136e204f105
 refs/heads/ndm: f3868061cd7988080c30d6d5bf352a5a5fe2460b

branches/snap-stage3/doc/rust.md

@@ -1927,13 +1927,15 @@ x <- copy y;
 
 The former is just more terse and familiar.
 
-#### Operator-assignment expressions
+#### Compound assignment expressions
 
 The `+`, `-`, `*`, `/`, `%`, `&`, `|`, `^`, `<<`, `>>`, and `>>>`
 operators may be composed with the `=` operator. The expression `lval
 OP= val` is equivalent to `lval = lval OP val`. For example, `x = x +
 1` may be written as `x += 1`.
 
+Any such expression always has the [`nil`](#primitive-types) type.
+
 #### Operator precedence
 
 The precedence of Rust binary operators is ordered as follows, going