---

yaml
---
r: 147911
b: refs/heads/try2
c: bac8b2e
h: refs/heads/master
i:
  147909: 2046bf4
  147907: 324633d
  147903: 4d59844
v: v3

Author: pcwalton

[refs]

@@ -5,7 +5,7 @@ refs/heads/snap-stage3: 78a7676898d9f80ab540c6df5d4c9ce35bb50463
 refs/heads/try: 519addf6277dbafccbb4159db4b710c37eaa2ec5
 refs/tags/release-0.1: 1f5c5126e96c79d22cb7862f75304136e204f105
 refs/heads/ndm: f3868061cd7988080c30d6d5bf352a5a5fe2460b
-refs/heads/try2: db21387ad0465323d4d5171f15d9989944d32603
+refs/heads/try2: bac8b2e557109b24277d28a00aea5448fc6933f6
 refs/heads/dist-snap: ba4081a5a8573875fed17545846f6f6902c8ba8d
 refs/tags/release-0.2: c870d2dffb391e14efb05aa27898f1f6333a9596
 refs/tags/release-0.3: b5f0d0f648d9a6153664837026ba1be43d3e2503

branches/try2/src/libsyntax/ext/tt/transcribe.rs

@@ -37,7 +37,7 @@ pub struct TtReader {
     /* for MBE-style macro transcription */
     priv interpolations: RefCell<HashMap<Ident, @named_match>>,
     priv repeat_idx: RefCell<~[uint]>,
-    repeat_len: ~[uint],
+    priv repeat_len: RefCell<~[uint]>,
     /* cached: */
     cur_tok: Token,
     cur_span: Span
@@ -64,7 +64,7 @@ pub fn new_tt_reader(sp_diag: @mut SpanHandler,
             Some(x) => RefCell::new(x),
         },
         repeat_idx: RefCell::new(~[]),
-        repeat_len: ~[],
+        repeat_len: RefCell::new(~[]),
         /* dummy values, never read: */
         cur_tok: EOF,
         cur_span: DUMMY_SP
@@ -189,7 +189,8 @@ pub fn tt_next_token(r: &mut TtReader) -> TokenAndSpan {
         /* done with this set; pop or repeat? */
         if ! r.stack.dotdotdoted || {
                 let repeat_idx = r.repeat_idx.borrow();
-                *repeat_idx.get().last() == *r.repeat_len.last() - 1
+                let repeat_len = r.repeat_len.borrow();
+                *repeat_idx.get().last() == *repeat_len.get().last() - 1
             } {
 
             match r.stack.up {
@@ -201,8 +202,9 @@ pub fn tt_next_token(r: &mut TtReader) -> TokenAndSpan {
                 if r.stack.dotdotdoted {
                     {
                         let mut repeat_idx = r.repeat_idx.borrow_mut();
+                        let mut repeat_len = r.repeat_len.borrow_mut();
                         repeat_idx.get().pop();
-                        r.repeat_len.pop();
+                        repeat_len.get().pop();
                     }
                 }
 
@@ -275,7 +277,8 @@ pub fn tt_next_token(r: &mut TtReader) -> TokenAndSpan {
                 } else {
                     {
                         let mut repeat_idx = r.repeat_idx.borrow_mut();
-                        r.repeat_len.push(len);
+                        let mut repeat_len = r.repeat_len.borrow_mut();
+                        repeat_len.get().push(len);
                         repeat_idx.get().push(0u);
                         r.stack = @mut TtFrame {
                             forest: tts,