mitsuhiko/jinja2 — pull request #322 by andreasWallner (2014-04-14 18:23:42+00:00)
Title: Clarify encoding parameter if 'dump' in documentation, fixes #309

If no encoding parameter is given, the file is opened in 'w' mode, which will
default to locale.getpreferredencoding(False) not to a unicode like hinted at
in the old documentation.