geoext/geoext — pull request #18 by ahocevar (2012-01-13 13:52:26+00:00)
Title: Fixing legend url with custom format.

The tests didn't show the issue because of the use of OpenLayers.Util.isEquivalentUrl, but the way the addition of the default image/gif format is implemented, it will be appended to a format that was defined in baseParams. To avoid this, we append to the url after baseParams were appended.