--- a/svncommand.py
+++ b/svncommand.py
@@ -102,69 +102,3 @@ def update(ui, args, repo, clean=False, 
                              answers]+['']))
     return 1
 update = register_subcommand('up')(update)
-
-
-def verify_revision(ui, args, repo, force=False, **opts):
-    """verify a single converted revision
-    Note: This wipes your working copy and then exports the corresponding
-    Subversion into your working copy to verify. Use with caution.
-    """
-    assert len(args) == 1
-    if not force:
-        assert repo.status(ignored=True,
-                           unknown=True) == ([], [], [], [], [], [], [])
-    rev = int(args[0])
-    wc_path = os.path.dirname(repo.path)
-    svn_url = open(os.path.join(repo.path, 'svn', 'url')).read()
-    svn = svnwrap.SubversionRepo(svn_url, username=merc_util.getuser())
-    util.wipe_all_files(wc_path)
-    if update(ui, args, repo, clean=True) == 0:
-        util.wipe_all_files(wc_path)
-        br = repo.dirstate.branch()
-        if br == 'default':
-            br = None
-        if br:
-            diff_path = 'branches/%s' % br
-        else:
-            diff_path = 'trunk'
-        svn.fetch_all_files_to_dir(diff_path, rev, wc_path)
-        stat = repo.status(unknown=True)
-        ignored = [s for s in stat[4]
-                   if '/.svn/'  not in s and not s.startswith('.svn/')]
-        stat = stat[0:4]
-        if stat != ([], [], [], [],) or ignored != []:
-            ui.status('Something is wrong with this revision.\n')
-            return 2
-        else:
-            ui.status('OK.\n')
-            return 0
-    return 1
-verify_revision = register_subcommand('verify_revision')(verify_revision)
-
-def verify_all_revisions(ui, args, repo, **opts):
-    """verify converted revisions; all or starting at a revision
-
-    Note: This is *extremely* abusive of the Subversion server. It exports every
-    revision of the code one revision at a time.
-    """
-    assert repo.status(ignored=True,
-                       unknown=True) == ([], [], [], [], [], [], [])
-    start_rev = 0
-    args = list(args)
-    if args:
-        start_rev = int(args.pop(0))
-    revmap = util.parse_revmap(os.path.join(repo.path, 'svn', 'rev_map'))
-    revs = sorted(revmap.keys())
-    for revnum, br in revs:
-        if revnum < start_rev:
-            continue
-        res = verify_revision(ui, [revnum], repo, force=True)
-        if res == 0:
-            print revnum, 'verfied'
-        elif res == 1:
-            print revnum, 'skipped'
-        else:
-            print revnum, 'failed'
-            return 1
-    return 0
-verify_all_revisions = register_subcommand('verify_all_revisions')(verify_all_revisions)

new file mode 100755
--- /dev/null
+++ b/tools/bisect-find-bad.sh
@@ -0,0 +1,10 @@
+#!/bin/bash
+/bin/rm -rf *
+svn export `hg svn info 2> /dev/null | grep '^URL: ' | sed 's/URL: //'` -`hg svn parent | sed 's/.*: //;s/ .*//'` . --force
+if [ `hg st | wc -l` = 0 ] ; then
+    exit 0
+else
+    hg revert --all
+    hg purge
+    exit 1
+fi