# HG changeset patch
# User Mads Kiilerich <madski@unity3d.com>
# Date 2013-04-04 22:40:58
# Node ID 3761a66b8addacd392cbeed7957b780cc67fd317
# Parent  5dcfa6304f888c737c76906e66ab195036934f63

pullrequests: handle the case where no matching revisions are found for either end

Use -1 as default revision - that is the null revision.

diff --git a/rhodecode/model/pull_request.py b/rhodecode/model/pull_request.py
--- a/rhodecode/model/pull_request.py
+++ b/rhodecode/model/pull_request.py
@@ -185,13 +185,13 @@ class PullRequestModel(BaseModel):
 
             org_rev_spec = "%s('%s')" % (_revset_predicates[org_ref[0]],
                                          safe_str(org_ref[1]))
-            org_rev = org_repo._repo[scmutil.revrange(org_repo._repo,
-                                                      [org_rev_spec])[-1]]
+            org_revs = scmutil.revrange(org_repo._repo, [org_rev_spec])
+            org_rev = org_repo._repo[org_revs[-1] if org_revs else -1]
 
             other_rev_spec = "%s('%s')" % (_revset_predicates[other_ref[0]],
                                            safe_str(other_ref[1]))
-            other_rev = other_repo._repo[scmutil.revrange(other_repo._repo,
-                                                          [other_rev_spec])[-1]]
+            other_revs = scmutil.revrange(other_repo._repo, [other_rev_spec])
+            other_rev = other_repo._repo[other_revs[-1] if other_revs else -1]
 
             #case two independent repos
             if org_repo != other_repo: