[PATCH 3/7] Move identification of parent branch's remote def up into stack class.

[Yann Dirson <ydirson@altern.org>]

Also adds the __set_parent_remote() counterpart method, but only
private since it is expected to be called only through set_parent, to
be introduced in subsequent patch.

Signed-off-by: Yann Dirson <ydirson@altern.org>
---

 stgit/commands/pull.py |    2 +-
 stgit/stack.py         |    6 ++++++
 2 files changed, 7 insertions(+), 1 deletions(-)

diff --git a/stgit/commands/pull.py b/stgit/commands/pull.py
index e47858a..0608fb6 100644
--- a/stgit/commands/pull.py
+++ b/stgit/commands/pull.py
@@ -53,7 +53,7 @@ def func(parser, options, args):
     if len(args) >= 1:
         repository = args[0]
     else:
-        repository = config.get('branch.%s.remote' % git.get_head_file()) or 'origin'
+        repository = crt_series.get_parent_remote()
 
     refspec = None
     if len(args) == 2:
diff --git a/stgit/stack.py b/stgit/stack.py
index 6281f36..947b416 100644
--- a/stgit/stack.py
+++ b/stgit/stack.py
@@ -407,6 +407,12 @@ class Series(StgitObject):
     def set_description(self, line):
         self._set_field('description', line)
 
+    def get_parent_remote(self):
+        return config.get('branch.%s.remote' % self.__name) or 'origin'
+
+    def __set_parent_remote(self, remote):
+        value = config.set('branch.%s.remote' % self.__name, remote)
+
     def __patch_is_current(self, patch):
         return patch.get_name() == self.get_current()