Allow submodules to be ignored in is_dirty

There are cases when might not consider a directory dirty when a submodule has
changes. Particular case was git-up stashing changes where submodules are
irrelevant.

git/repo/base.py

@@ -563,7 +563,8 @@ def _set_alternates(self, alts):
  alternates = property(_get_alternates, _set_alternates,
  doc="Retrieve a list of alternates paths or set a list paths to be used as alternates")
 
- def is_dirty(self, index=True, working_tree=True, untracked_files=False):
+ def is_dirty(self, index=True, working_tree=True, untracked_files=False,
+ consider_submodules=True):
  """
  :return:
  ``True``, the repository is considered dirty. By default it will react
@@ -575,7 +576,9 @@ def is_dirty(self, index=True, working_tree=True, untracked_files=False):
  return False
 
  # start from the one which is fastest to evaluate
- default_args = ('--abbrev=40', '--full-index', '--raw')
+ default_args = ['--abbrev=40', '--full-index', '--raw']
+ if not consider_submodules:
+ default_args.append('--ignore-submodules')
  if index:
  # diff index against HEAD
  if isfile(self.index.path) and \
@@ -588,7 +591,10 @@ def is_dirty(self, index=True, working_tree=True, untracked_files=False):
  return True
  # END working tree handling
  if untracked_files:
- if len(self.untracked_files):
+ kwargs = {}
+ if not consider_submodules:
+ kwargs['ignore_submodules'] = True
+ if len(self._get_untracked_files(**kwargs)):
  return True
  # END untracked files
  return False
@@ -604,10 +610,14 @@ def untracked_files(self):
 
  :note:
  ignored files will not appear here, i.e. files mentioned in .gitignore"""
+ return self._get_untracked_files()
+
+ def _get_untracked_files(self, **kwargs):
  # make sure we get all files, no only untracked directores
  proc = self.git.status(porcelain=True,
  untracked_files=True,
- as_process=True)
+ as_process=True,
+ **kwargs)
  # Untracked files preffix in porcelain mode
  prefix = "?? "
  untracked_files = list()