Index: subversion/libsvn_repos/replay.c
===================================================================
--- subversion/libsvn_repos/replay.c	(revision 1919485)
+++ subversion/libsvn_repos/replay.c	(working copy)
@@ -158,6 +158,7 @@
 static svn_error_t *
 add_subdir(svn_fs_root_t *source_root,
            svn_fs_root_t *target_root,
+           svn_fs_root_t *compare_root,
            const svn_delta_editor_t *editor,
            void *edit_baton,
            const char *edit_path,
@@ -276,7 +277,7 @@
             }
           else
             {
-              SVN_ERR(add_subdir(new_source_root, target_root,
+              SVN_ERR(add_subdir(new_source_root, target_root, compare_root,
                                  editor, edit_baton, new_edit_path,
                                  *dir_baton, new_source_fspath,
                                  authz_read_func, authz_read_baton,
@@ -319,10 +320,16 @@
                                             delta_handler_baton,
                                             pool));
 
-          SVN_ERR(svn_fs_file_checksum(&checksum, svn_checksum_md5, target_root,
+          const char *hex_digest = NULL;
+          if (compare_root)
+          {
+            SVN_ERR(svn_fs_file_checksum(&checksum, svn_checksum_md5, target_root,
                                        new_edit_path, TRUE, pool));
+            hex_digest = svn_checksum_to_cstring(checksum, pool);
+          }
+
           SVN_ERR(editor->close_file(file_baton,
-                                     svn_checksum_to_cstring(checksum, pool),
+                                     hex_digest,
                                      pool));
         }
       else
@@ -579,7 +586,7 @@
              contents. */
           if (change->copyfrom_path && ! copyfrom_path)
             {
-              SVN_ERR(add_subdir(copyfrom_root, root, editor, edit_baton,
+              SVN_ERR(add_subdir(copyfrom_root, root, cb->compare_root, editor, edit_baton,
                                  edit_path, parent_baton, change->copyfrom_path,
                                  cb->authz_read_func, cb->authz_read_baton,
                                  cb->changed_paths, pool, dir_baton));
@@ -783,11 +790,17 @@
   /* Close the file baton if we opened it. */
   if (file_baton)
     {
-      svn_checksum_t *checksum;
-      SVN_ERR(svn_fs_file_checksum(&checksum, svn_checksum_md5, root, edit_path,
-                                   TRUE, pool));
+      const char *hex_digest = NULL;
+      if (cb->compare_root)
+      {
+        svn_checksum_t *checksum;
+        SVN_ERR(svn_fs_file_checksum(&checksum, svn_checksum_md5, root, edit_path,
+                                     TRUE, pool));
+        hex_digest = svn_checksum_to_cstring(checksum, pool);
+      }
+      
       SVN_ERR(editor->close_file(file_baton,
-                                 svn_checksum_to_cstring(checksum, pool),
+                                 hex_digest,
                                  pool));
     }
 
Index: subversion/svnlook/svnlook.c
===================================================================
--- subversion/svnlook/svnlook.c	(revision 1919485)
+++ subversion/svnlook/svnlook.c	(working copy)
@@ -506,7 +506,7 @@
                                 base_root, root, pool, edit_pool));
 
   /* Drive our editor. */
-  SVN_ERR(svn_repos_replay2(root, "", SVN_INVALID_REVNUM, TRUE,
+  SVN_ERR(svn_repos_replay2(root, "", SVN_INVALID_REVNUM, FALSE,
                             editor, edit_baton, NULL, NULL, edit_pool));
 
   /* Return the tree we just built. */