From e990b69efad262ffa79640857c57bb0b82a0418d Mon Sep 17 00:00:00 2001
From: Pierre-Yves Chibon <pingou@pingoured.fr>
Date: Jun 04 2014 14:51:27 +0000
Subject: If a branch is specified and no commit id, use that branch to diff against


---

diff --git a/progit/fork.py b/progit/fork.py
index 166b925..95b15b8 100644
--- a/progit/fork.py
+++ b/progit/fork.py
@@ -332,6 +332,10 @@ def new_request_pull(repo, username=None, commitid=None):
 
     if commitid is None:
         commitid = repo_obj.head.target
+        branchname = flask.request.args.get('branch', None)
+        if branchname:
+            branch = repo_obj.lookup_branch(branchname)
+            commitid = branch.get_object().hex
 
     diff_commits = []
     diffs = []