TypeError: unhashable type: 'list' with malformed URL

[srl@…]

How to Reproduce

While doing a GET operation on /query, Trac issued an internal error.

If the order= is specified twice, such as ​http://trac.edgewall.org/query?order=priority&order=owner trac will error. Issue is user may not be able to edit the custom query again. Probably the line specified needs to check whether "order" is a list, and do something sane like grab the first item.

Request parameters:

{'order': [u'priority', u'owner']}

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.4 (KHTML, like Gecko) Chrome/22.0.1229.79 Safari/537.4

System Information

System information not available

Enabled Plugins

Plugin information not available

Python Traceback

Traceback (most recent call last):
  File "/usr/local/virtualenv/1.1dev/lib/python2.6/site-packages/Trac-1.1.1dev_r11388-py2.6.egg/trac/web/main.py", line 497, in _dispatch_request
    dispatcher.dispatch(req)
  File "/usr/local/virtualenv/1.1dev/lib/python2.6/site-packages/Trac-1.1.1dev_r11388-py2.6.egg/trac/web/main.py", line 214, in dispatch
    resp = chosen_handler.process_request(req)
  File "/usr/local/virtualenv/1.1dev/lib/python2.6/site-packages/Trac-1.1.1dev_r11388-py2.6.egg/trac/ticket/query.py", line 938, in process_request
    max)
  File "/usr/local/virtualenv/1.1dev/lib/python2.6/site-packages/Trac-1.1.1dev_r11388-py2.6.egg/trac/ticket/query.py", line 78, in __init__
    self.order = synonyms.get(order, order)     # 0.11 compatibility
TypeError: unhashable type: 'list'