def write_tree(stack, paths, use_temp_index):
"""Possibly update the index, and then write its tree.
If any path limiting is in effect, use a temp index.
:return: The written tree.
:rtype: :class:`Tree<stgit.git.Tree>`
"""
if use_temp_index:
with stack.repository.temp_index() as index:
iw = IndexAndWorktree(index, stack.repository.default_worktree)
try:
index.read_tree(stack.head)
if paths:
iw.update_index(paths)
return index.write_tree()
finally:
stack.repository.default_iw.update_index(paths)
else:
iw = stack.repository.default_iw
if paths:
iw.update_index(paths)
return iw.index.write_tree()
def go(index):
if paths:
iw = IndexAndWorktree(index, stack.repository.default_worktree)
iw.update_index(paths)
return index.write_tree()