[StGIT PATCH 2/5] Rename Repository.head to Repository.head_ref

[Catalin Marinas <catalin.marinas@gmail.com>]

This is to avoid confusion with the Stack.head function which returns
a commit object rather than a file name. The patch also changes the
"new" function to use stack.head directly rather than via the
Repository.refs... object.

Signed-off-by: Catalin Marinas <catalin.marinas@gmail.com>
---

 stgit/commands/new.py |    3 +--
 stgit/lib/git.py      |    4 ++--
 2 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/stgit/commands/new.py b/stgit/commands/new.py
index 15bb2e0..c4ee4e1 100644
--- a/stgit/commands/new.py
+++ b/stgit/commands/new.py
@@ -58,9 +58,8 @@ def func(parser, options, args):
     else:
         parser.error('incorrect number of arguments')
 
-    head = directory.repository.refs.get(directory.repository.head)
     cd = gitlib.CommitData(
-        tree = head.data.tree, parents = [head], message = '',
+        tree = stack.head.data.tree, parents = [stack.head], message = '',
         author = gitlib.Person.author(), committer = gitlib.Person.committer())
 
     # Set patch commit message from commandline.
diff --git a/stgit/lib/git.py b/stgit/lib/git.py
index c9f01e3..fd66f6d 100644
--- a/stgit/lib/git.py
+++ b/stgit/lib/git.py
@@ -443,13 +443,13 @@ class Repository(RunWithEnv):
                                                 ).output_one_line()
         return self.get_commit(sha1)
     @property
-    def head(self):
+    def head_ref(self):
         try:
             return self.run(['git', 'symbolic-ref', '-q', 'HEAD']
                             ).output_one_line()
         except run.RunException:
             raise DetachedHeadException()
-    def set_head(self, ref, msg):
+    def set_head_ref(self, ref, msg):
         self.run(['git', 'symbolic-ref', '-m', msg, 'HEAD', ref]).no_output()
     def simple_merge(self, base, ours, theirs):
         """Given three L{Tree}s, tries to do an in-index merge with a