--- a/mercurial/repair.py	Wed Jan 16 00:08:08 2013 +0100
+++ b/mercurial/repair.py	Wed Jan 16 00:09:26 2013 +0100
@@ -66,17 +66,6 @@
     striplist = [cl.rev(node) for node in nodelist]
     striprev = min(striplist)
 
-    # Generate set of branches who will have nodes stripped.
-    striprevs = repo.revs("%ld::", striplist)
-    stripbranches = set([repo[rev].branch() for rev in striprevs])
-
-    # Set of potential new heads resulting from the strip.  The parents of any
-    # node removed could be a new head because the node to be removed could have
-    # been the only child of the parent.
-    newheadrevs = repo.revs("parents(%ld::) - %ld::", striprevs, striprevs)
-    newheadnodes = set([cl.node(rev) for rev in newheadrevs])
-    newheadbranches = set([repo[rev].branch() for rev in newheadrevs])
-
     keeppartialbundle = backup == 'strip'
 
     # Some revisions with rev > striprev may not be descendants of striprev.
@@ -191,10 +180,4 @@
                     % chgrpfile)
         raise
 
-    if len(stripbranches) == 1 and len(newheadbranches) == 1 \
-            and stripbranches == newheadbranches:
-        repo.destroyed(newheadnodes)
-    else:
-        # Multiple branches involved in strip. Will allow branchcache to become
-        # invalid and later on rebuilt from scratch
-        repo.destroyed()
+    repo.destroyed()