--- a/.hgsigs	Thu Mar 28 18:27:19 2013 -0700
+++ b/.hgsigs	Tue Apr 02 08:58:42 2013 -0700
@@ -67,3 +67,4 @@
 a6088c05e43a8aee0472ca3a4f6f8d7dd914ebbf 0 iD8DBQBRDDROywK+sNU5EO8RAh75AJ9uJCGoCWnP0Lv/+XuYs4hvUl+sAgCcD36QgAnuw8IQXrvv684BAXAnHcA=
 7511d4df752e61fe7ae4f3682e0a0008573b0402 0 iD8DBQBRFYaoywK+sNU5EO8RAuErAJoDyhXn+lptU3+AevVdwAIeNFyR2gCdHzPHyWd+JDeWCUR+pSOBi8O2ppM=
 5b7175377babacce80a6c1e12366d8032a6d4340 0 iD8DBQBRMCYgywK+sNU5EO8RAq1/AKCWKlt9ysibyQgYwoxxIOZv5J8rpwCcDSHQaaf1fFZUTnQsOePwcM2Y/Sg=
+50c922c1b5145dab8baefefb0437d363b6a6c21c 0 iD8DBQBRWnUnywK+sNU5EO8RAuQRAJwM42cJqJPeqJ0jVNdMqKMDqr4dSACeP0cRVGz1gitMuV0x8f3mrZrqc7I=

--- a/.hgtags	Thu Mar 28 18:27:19 2013 -0700
+++ b/.hgtags	Tue Apr 02 08:58:42 2013 -0700
@@ -80,3 +80,4 @@
 a6088c05e43a8aee0472ca3a4f6f8d7dd914ebbf 2.5
 7511d4df752e61fe7ae4f3682e0a0008573b0402 2.5.1
 5b7175377babacce80a6c1e12366d8032a6d4340 2.5.2
+50c922c1b5145dab8baefefb0437d363b6a6c21c 2.5.3

--- a/mercurial/commands.py	Thu Mar 28 18:27:19 2013 -0700
+++ b/mercurial/commands.py	Tue Apr 02 08:58:42 2013 -0700
@@ -2095,7 +2095,7 @@
 def debugobsolete(ui, repo, precursor=None, *successors, **opts):
     """create arbitrary obsolete marker
 
-    With no arguments it it display the list obsolescence marker."""
+    With no arguments, displays the list of obsolescence markers."""
     def parsenodeid(s):
         try:
             # We do not use revsingle/revrange functions here to accept

--- a/mercurial/context.py	Thu Mar 28 18:27:19 2013 -0700
+++ b/mercurial/context.py	Tue Apr 02 08:58:42 2013 -0700
@@ -291,16 +291,16 @@
             try:
                 return self._manifest[path], self._manifest.flags(path)
             except KeyError:
-                raise error.LookupError(self._node, path,
-                                        _('not found in manifest'))
+                raise error.ManifestLookupError(self._node, path,
+                                                _('not found in manifest'))
         if '_manifestdelta' in self.__dict__ or path in self.files():
             if path in self._manifestdelta:
                 return (self._manifestdelta[path],
                         self._manifestdelta.flags(path))
         node, flag = self._repo.manifest.find(self._changeset[0], path)
         if not node:
-            raise error.LookupError(self._node, path,
-                                    _('not found in manifest'))
+            raise error.ManifestLookupError(self._node, path,
+                                            _('not found in manifest'))
 
         return node, flag
 

--- a/mercurial/error.py	Thu Mar 28 18:27:19 2013 -0700
+++ b/mercurial/error.py	Tue Apr 02 08:58:42 2013 -0700
@@ -27,6 +27,9 @@
     def __str__(self):
         return RevlogError.__str__(self)
 
+class ManifestLookupError(LookupError):
+    pass
+
 class CommandError(Exception):
     """Exception raised on errors in parsing the command line."""
 

--- a/mercurial/hgweb/hgweb_mod.py	Thu Mar 28 18:27:19 2013 -0700
+++ b/mercurial/hgweb/hgweb_mod.py	Tue Apr 02 08:58:42 2013 -0700
@@ -250,7 +250,8 @@
         except (error.LookupError, error.RepoLookupError), err:
             req.respond(HTTP_NOT_FOUND, ctype)
             msg = str(err)
-            if util.safehasattr(err, 'name') and 'manifest' not in msg:
+            if (util.safehasattr(err, 'name') and
+                not isinstance(err,  error.ManifestLookupError)):
                 msg = 'revision not found: %s' % err.name
             return tmpl('error', error=msg)
         except (error.RepoError, error.RevlogError), inst: