mitsuhiko/markupsafe — pull request #15 by anti-social (2013-07-19 16:35:36+00:00)
Title: Fixed format for keyword arguments

```python
In [1]: from markupsafe import Markup

In [2]: Markup(u'{a}').format(a=u'<>')
Out[2]: Markup(u'<>')

In [3]: Markup(u'{}').format(u'<>')
Out[3]: Markup(u'<>')
```