Tr fix?

gistfile1.txt

diff --git a/vm/builtin/string.cpp b/vm/builtin/string.cpp
index 49e5628..52e7848 100644
--- a/vm/builtin/string.cpp
+++ b/vm/builtin/string.cpp
@@ -944,20 +944,9 @@ namespace rubinius {
     native_int limit;
 
     bool assign(native_int chr) {
-      int j, i = set[chr];
-
       if(limit >= 0 && steps >= limit) return true;
 
-      if(i < 0) {
-        tr[last] = chr;
-      } else {
-        last--;
-        for(j = i + 1; j <= last; j++) {
-          set[tr[j]]--;
-          tr[j-1] = tr[j];
-        }
-        tr[last] = chr;
-      }
+      tr[last] = chr;
       set[chr] = last++;
       steps++;