Add patch history support

[stgit] / stgit / git.py

diff --git a/stgit/git.py b/stgit/git.py
index 907c82d..025d15d 100644 (file)
--- a/stgit/git.py
+++ b/stgit/git.py
@@ -59,7 +59,11 @@ class Commit:
         return self.__tree
 
     def get_parent(self):
-        return self.get_parents()[0]
+        parents = self.get_parents()
+        if parents:
+            return parents[0]
+        else:
+            return None
 
     def get_parents(self):
         return _output_lines('git-rev-list --parents --max-count=1 %s'
@@ -436,7 +440,9 @@ def commit(message, files = None, parents = None, allowempty = False,
             raise GitException, 'No changes to commit'
 
     # get the commit message
-    if message[-1:] != '\n':
+    if not message:
+        message = '\n'
+    elif message[-1:] != '\n':
         message += '\n'
 
     must_switch = True