453     new_tree = _get_tree_to_diff(new_revision_spec, working_tree, branch,
475     if working_tree is not None and working_tree not in (old_tree, new_tree):
477     return (old_tree, new_tree, old_branch, new_branch,
495 def show_diff_trees(old_tree, new_tree, to_file, specific_files=None,  argument
524         exit_stack.enter_context(new_tree.lock_read())
525         differ = format_cls.from_trees_options(old_tree, new_tree, to_file,
560     def __init__(self, old_tree, new_tree, to_file, path_encoding='utf-8'):  argument
569         self.new_tree = new_tree
578         return klass(diff_tree.old_tree, diff_tree.new_tree,
675             new_target = self.new_tree.get_symlink_target(new_path)
702     def __init__(self, old_tree, new_tree, to_file, path_encoding='utf-8',  argument
705         DiffPath.__init__(self, old_tree, new_tree, to_file, path_encoding)
729             new_date = _patch_header_date(self.new_tree, new_path)
758             to_text = _get_text(self.new_tree, to_path)
773     def __init__(self, command_template, old_tree, new_tree, to_file,  argument
775         DiffPath.__init__(self, old_tree, new_tree, to_file, path_encoding)
780     def from_string(klass, command_template, old_tree, new_tree, to_file,  argument
782         return klass(command_template, old_tree, new_tree, to_file,
792                                      diff_tree.new_tree, diff_tree.to_file)
899             new_path, self.new_tree, 'new', force_temp,
952     def __init__(self, old_tree, new_tree, to_file, path_encoding='utf-8',  argument
965             diff_text = DiffText(old_tree, new_tree, to_file, path_encoding,
968         self.new_tree = new_tree
978     def from_trees_options(klass, old_tree, new_tree, to_file,  argument
1010         diff_text = DiffText(old_tree, new_tree, to_file, path_encoding,
1012         return klass(old_tree, new_tree, to_file, path_encoding, diff_text,
1030         iterator = self.new_tree.iter_changes(self.old_tree,
1051             if change.kind[0] == 'symlink' and not self.new_tree.supports_symlinks():
1109             new_kind = self.new_tree.kind(new_path)