# Bazaar merge directive format 2 (Bazaar 0.90)
# revision_id: amanic@gmail.com-20080905235052-l0sqeix2xzdsysij
# target_branch: .
# testament_sha1: c4feba9769a53a0838260fd2864854cc5519a9c4
# timestamp: 2008-09-06 01:51:51 +0200
# base_revision_id: argentina@gmail.com-20080901214721-\
#   cdlcjue6ggr6y86q
# 
# Begin patch
=== modified file 'loggerhead/controllers/inventory_ui.py'
--- loggerhead/controllers/inventory_ui.py	2008-07-23 21:41:49 +0000
+++ loggerhead/controllers/inventory_ui.py	2008-09-05 23:50:52 +0000
@@ -20,7 +20,9 @@
 import logging
 import posixpath
 
-from paste.httpexceptions import HTTPServerError
+from paste.httpexceptions import HTTPNotFound, HTTPServerError
+
+from bzrlib.revision import is_null as is_null_rev
 
 from loggerhead import util
 from loggerhead.controllers import TemplatedBranchView
@@ -45,6 +47,10 @@
         else:
             revid = h.last_revid
 
+        if is_null_rev(revid):
+            #XXX: try to print a nicer error without throwing an exception.
+            raise HTTPNotFound('This branch does not have any revisions yet.')
+
         try:
             inv = h.get_inventory(revid)
         except:

# Begin bundle
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