---

yaml
---
r: 37031
b: refs/heads/try2
c: 9e5a416
h: refs/heads/master
i:
  37029: 4caf078
  37027: 7dac4df
  37023: d07be29
v: v3

Author: apasel422

[refs]

@@ -5,7 +5,7 @@ refs/heads/snap-stage3: eb8fd119c65c67f3b1b8268cc7341c22d39b7b61
 refs/heads/try: d324a424d8f84b1eb049b12cf34182bda91b0024
 refs/tags/release-0.1: 1f5c5126e96c79d22cb7862f75304136e204f105
 refs/heads/ndm: f3868061cd7988080c30d6d5bf352a5a5fe2460b
-refs/heads/try2: af298deff7141c3b8b95acb94ef2145d2ef9adc0
+refs/heads/try2: 9e5a4166d5bf0ebad622535a6619e12014fc6470
 refs/heads/incoming: d9317a174e434d4c99fc1a37fd7dc0d2f5328d37
 refs/heads/dist-snap: 22efa39382d41b084fde1719df7ae8ce5697d8c9
 refs/tags/release-0.2: c870d2dffb391e14efb05aa27898f1f6333a9596

branches/try2/src/libcore/extfmt.rs

@@ -214,17 +214,19 @@ pub mod ct {
                             err: ErrorFn) ->
        Parsed<Piece> {
         let parm = parse_parameter(s, i, lim);
-        let flags = parse_flags(s, parm.next, lim);
-        let width = parse_count(s, flags.next, lim);
+        // avoid copying ~[Flag] by destructuring
+        let Parsed {val: flags_val, next: flags_next} = parse_flags(s,
+            parm.next, lim);
+        let width = parse_count(s, flags_next, lim);
         let prec = parse_precision(s, width.next, lim);
         let ty = parse_type(s, prec.next, lim, err);
-        return Parsed::new(
+        Parsed::new(
                  PieceConv(Conv {param: parm.val,
-                             flags: copy flags.val,
+                             flags: flags_val,
                              width: width.val,
                              precision: prec.val,
                              ty: ty.val}),
-             ty.next);
+             ty.next)
     }
     pub fn parse_parameter(s: &str, i: uint, lim: uint) ->
        Parsed<Option<uint>> {