mitsuhiko/werkzeug — pull request #169 by rbp (2012-03-07 10:34:03+00:00)
Title: Small fix to utils:get_content_type to use charset on application/json and application/javascript

Without this fix, something like

response = make_response(some_json)
response.mimetype = 'application/json'

will strip the charset from the Content-Type header.