git_push: Handle branch names containing 'set-upstream' (#759)

This should fix https://github.com/nvbn/thefuck/issues/723 (IndexError when using bitbucket)

tests/rules/test_git_push.py

@@ -15,6 +15,19 @@ To push the current branch and set the remote as upstream, use
 '''.format(branch_name, branch_name)
 
 
+@pytest.fixture
+def output_bitbucket():
+    return '''Total 0 (delta 0), reused 0 (delta 0)
+remote:
+remote: Create pull request for feature/set-upstream:
+remote:   https://bitbucket.org/set-upstream
+remote:
+To git@bitbucket.org:test.git
+   e5e7fbb..700d998  feature/set-upstream -> feature/set-upstream
+Branch feature/set-upstream set up to track remote branch feature/set-upstream from origin.
+'''
+
+
 @pytest.mark.parametrize('script, branch_name', [
     ('git push', 'master'),
     ('git push origin', 'master')])
@@ -22,6 +35,10 @@ def test_match(output, script, branch_name):
     assert match(Command(script, output))
 
 
+def test_match_bitbucket(output_bitbucket):
+    assert not match(Command('git push origin', output_bitbucket))
+
+
 @pytest.mark.parametrize('script, branch_name', [
     ('git push master', None),
     ('ls', 'master')])

thefuck/rules/git_push.py

@@ -6,7 +6,7 @@ from thefuck.specific.git import git_support
 @git_support
 def match(command):
     return ('push' in command.script_parts
-            and 'set-upstream' in command.output)
+            and 'git push --set-upstream' in command.output)
 
 
 def _get_upstream_option_index(command_parts):