--- a/mercurial/localrepo.py	Sat Jul 21 16:02:10 2007 -0500
+++ b/mercurial/localrepo.py	Sat Jul 21 16:02:10 2007 -0500
@@ -8,7 +8,7 @@
 from node import *
 from i18n import _
 import repo, changegroup
-import changelog, dirstate, filelog, manifest, context
+import changelog, dirstate, filelog, manifest, context, weakref
 import re, lock, transaction, tempfile, stat, mdiff, errno, ui
 import os, revlog, time, util, extensions, hook
 
@@ -16,8 +16,6 @@
     capabilities = ('lookup', 'changegroupsubset')
     supported = ('revlogv1', 'store')
 
-    def __del__(self):
-        self.transhandle = None
     def __init__(self, parentui, path=None, create=0):
         repo.repository.__init__(self)
         self.path = path
@@ -84,7 +82,7 @@
         self.branchcache = None
         self.nodetagscache = None
         self.filterpats = {}
-        self.transhandle = None
+        self._transref = self._lockref = self._wlockref = None
 
     def __getattr__(self, name):
         if name == 'changelog':
@@ -396,6 +394,11 @@
         n = self.changelog._partialmatch(key)
         if n:
             return n
+        try:
+            if len(key) == 20:
+                key = hex(key)
+        except:
+            pass
         raise repo.RepoError(_("unknown revision '%s'") % key)
 
     def dev(self):
@@ -495,9 +498,8 @@
         return self._filter("decode", filename, data)
 
     def transaction(self):
-        tr = self.transhandle
-        if tr != None and tr.running():
-            return tr.nest()
+        if self._transref and self._transref():
+            return self._transref().nest()
 
         # save dirstate for rollback
         try:
@@ -511,7 +513,7 @@
         tr = transaction.transaction(self.ui.warn, self.sopener,
                                        self.sjoin("journal"),
                                        aftertrans(renames))
-        self.transhandle = tr
+        self._transref = weakref.ref(tr)
         return tr
 
     def recover(self):

--- a/tests/test-abort-checkin.out	Sat Jul 21 16:02:10 2007 -0500
+++ b/tests/test-abort-checkin.out	Sat Jul 21 16:02:10 2007 -0500
@@ -1,8 +1,8 @@
 error: pretxncommit.nocommits hook failed: no commits allowed
-abort: no commits allowed
 transaction abort!
 rollback completed
+abort: no commits allowed
 error: pretxncommit.nocommits hook failed: no commits allowed
-abort: no commits allowed
 transaction abort!
 rollback completed
+abort: no commits allowed

--- a/tests/test-acl.out	Sat Jul 21 16:02:10 2007 -0500
+++ b/tests/test-acl.out	Sat Jul 21 16:02:10 2007 -0500
@@ -129,9 +129,9 @@
 acl: acl.deny not enabled
 acl: user fred not allowed on foo/file.txt
 error: pretxnchangegroup.acl hook failed: acl: access denied for changeset ef1ea85a6374
-abort: acl: access denied for changeset ef1ea85a6374
 transaction abort!
 rollback completed
+abort: acl: access denied for changeset ef1ea85a6374
 no rollback information available
 0:6675d58eff77
 
@@ -170,9 +170,9 @@
 acl: allowing changeset f9cafe1212c8
 acl: user fred not allowed on quux/file.py
 error: pretxnchangegroup.acl hook failed: acl: access denied for changeset 911600dab2ae
-abort: acl: access denied for changeset 911600dab2ae
 transaction abort!
 rollback completed
+abort: acl: access denied for changeset 911600dab2ae
 no rollback information available
 0:6675d58eff77
 
@@ -210,9 +210,9 @@
 acl: acl.deny enabled, 0 entries for user barney
 acl: user barney not allowed on foo/file.txt
 error: pretxnchangegroup.acl hook failed: acl: access denied for changeset ef1ea85a6374
-abort: acl: access denied for changeset ef1ea85a6374
 transaction abort!
 rollback completed
+abort: acl: access denied for changeset ef1ea85a6374
 no rollback information available
 0:6675d58eff77
 
@@ -253,9 +253,9 @@
 acl: allowing changeset f9cafe1212c8
 acl: user fred not allowed on quux/file.py
 error: pretxnchangegroup.acl hook failed: acl: access denied for changeset 911600dab2ae
-abort: acl: access denied for changeset 911600dab2ae
 transaction abort!
 rollback completed
+abort: acl: access denied for changeset 911600dab2ae
 no rollback information available
 0:6675d58eff77
 
@@ -296,9 +296,9 @@
 acl: allowing changeset ef1ea85a6374
 acl: user fred denied on foo/Bar/file.txt
 error: pretxnchangegroup.acl hook failed: acl: access denied for changeset f9cafe1212c8
-abort: acl: access denied for changeset f9cafe1212c8
 transaction abort!
 rollback completed
+abort: acl: access denied for changeset f9cafe1212c8
 no rollback information available
 0:6675d58eff77
 
@@ -338,9 +338,9 @@
 acl: acl.deny enabled, 0 entries for user barney
 acl: user barney not allowed on foo/file.txt
 error: pretxnchangegroup.acl hook failed: acl: access denied for changeset ef1ea85a6374
-abort: acl: access denied for changeset ef1ea85a6374
 transaction abort!
 rollback completed
+abort: acl: access denied for changeset ef1ea85a6374
 no rollback information available
 0:6675d58eff77
 
@@ -427,9 +427,9 @@
 acl: allowing changeset f9cafe1212c8
 acl: user wilma not allowed on quux/file.py
 error: pretxnchangegroup.acl hook failed: acl: access denied for changeset 911600dab2ae
-abort: acl: access denied for changeset 911600dab2ae
 transaction abort!
 rollback completed
+abort: acl: access denied for changeset 911600dab2ae
 no rollback information available
 0:6675d58eff77
 
@@ -471,9 +471,9 @@
 added 3 changesets with 3 changes to 3 files
 calling hook pretxnchangegroup.acl: hgext.acl.hook
 error: pretxnchangegroup.acl hook failed: unable to open ../acl.config: No such file or directory
-abort: unable to open ../acl.config: No such file or directory
 transaction abort!
 rollback completed
+abort: unable to open ../acl.config: No such file or directory
 no rollback information available
 0:6675d58eff77
 
@@ -524,9 +524,9 @@
 acl: allowing changeset f9cafe1212c8
 acl: user betty not allowed on quux/file.py
 error: pretxnchangegroup.acl hook failed: acl: access denied for changeset 911600dab2ae
-abort: acl: access denied for changeset 911600dab2ae
 transaction abort!
 rollback completed
+abort: acl: access denied for changeset 911600dab2ae
 no rollback information available
 0:6675d58eff77
 

--- a/tests/test-clone-pull-corruption.out	Sat Jul 21 16:02:10 2007 -0500
+++ b/tests/test-clone-pull-corruption.out	Sat Jul 21 16:02:10 2007 -0500
@@ -1,8 +1,8 @@
 1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 pulling from ../source
-abort: pretxncommit hook exited with status 1
 transaction abort!
 rollback completed
+abort: pretxncommit hook exited with status 1
 searching for changes
 adding changesets
 adding manifests

--- a/tests/test-committer.out	Sat Jul 21 16:02:10 2007 -0500
+++ b/tests/test-committer.out	Sat Jul 21 16:02:10 2007 -0500
@@ -22,7 +22,7 @@
 date:        Mon Jan 12 13:46:40 1970 +0000
 summary:     commit-1
 
-abort: Please specify a username.
 transaction abort!
 rollback completed
+abort: Please specify a username.
 No username found, using user@host instead

--- a/tests/test-hook.out	Sat Jul 21 16:02:10 2007 -0500
+++ b/tests/test-hook.out	Sat Jul 21 16:02:10 2007 -0500
@@ -60,9 +60,9 @@
 pretxncommit hook: HG_NODE=fad284daf8c032148abaffcd745dafeceefceb61 HG_PARENT1=8ea2ef7ad3e8cac946c72f1e0c79d6aebc301198 
 5:fad284daf8c0
 pretxncommit.forbid hook: HG_NODE=fad284daf8c032148abaffcd745dafeceefceb61 HG_PARENT1=8ea2ef7ad3e8cac946c72f1e0c79d6aebc301198 
-abort: pretxncommit.forbid1 hook exited with status 1
 transaction abort!
 rollback completed
+abort: pretxncommit.forbid1 hook exited with status 1
 4:8ea2ef7ad3e8
 precommit hook: HG_PARENT1=8ea2ef7ad3e8cac946c72f1e0c79d6aebc301198 
 precommit.forbid hook: HG_PARENT1=8ea2ef7ad3e8cac946c72f1e0c79d6aebc301198 
@@ -86,9 +86,9 @@
 adding manifests
 adding file changes
 added 1 changesets with 1 changes to 1 files
-abort: pretxnchangegroup.forbid1 hook exited with status 1
 transaction abort!
 rollback completed
+abort: pretxnchangegroup.forbid1 hook exited with status 1
 3:4c52fb2e4022
 preoutgoing hook: HG_SOURCE=pull 
 outgoing hook: HG_NODE=8ea2ef7ad3e8cac946c72f1e0c79d6aebc301198 HG_SOURCE=pull