The wonky for...in... whitespace was bothering me. Sorry!

src/comp/util/common.rs

@@ -51,7 +51,7 @@ fn field_expr(f: &ast::field) -> @ast::expr { ret f.node.expr; }
 
 fn field_exprs(fields: &[ast::field]) -> [@ast::expr] {
     let es = ~[];
-    for f: ast::field  in fields { es += ~[f.node.expr]; }
+    for f: ast::field in fields { es += ~[f.node.expr]; }
     ret es;
 }