---

yaml
---
r: 13156
b: refs/heads/master
c: f394933
h: refs/heads/master
v: v3

Author: lkuper

[refs]

@@ -1,5 +1,5 @@
 ---
-refs/heads/master: abef5f54c99ab8a6a1ea73c9b946557c13caf719
+refs/heads/master: f394933641b5894a4c408aaae59ea3f632b3ee64
 refs/heads/snap-stage1: e33de59e47c5076a89eadeb38f4934f58a3618a6
 refs/heads/snap-stage3: 4a81779abd786ff22d71434c6d9a5917ea4cdfff
 refs/heads/try: 2898dcc5d97da9427ac367542382b6239d9c0bbf

trunk/src/libsyntax/parse/parser.rs

@@ -724,6 +724,12 @@ class parser {
                 let mut fields = [self.parse_field(token::COLON)];
                 let mut base = none;
                 while self.token != token::RBRACE {
+                    // optional comma before "with"
+                    if self.token == token::COMMA
+                        && self.token_is_keyword("with",
+                                                 self.look_ahead(1u)) {
+                        self.bump();
+                    }
                     if self.eat_keyword("with") {
                         base = some(self.parse_expr()); break;
                     }

trunk/src/test/run-pass/issue-2463.rs

@@ -0,0 +1,19 @@
+fn main() {
+
+    let x = {
+        f: 0,
+        g: 0,
+    };
+
+    let y = {
+        f: 1,
+        g: 1,
+        with x
+    };
+
+    let z = {
+        f: 1,
+        with x
+    };
+
+}