Description of problem: BPMN designer ignore user settings for XML files formatting and always use 2 spaces for indentation. How reproducible: Set 'Indend using tabs' (or different settings then 2 spaces) in eclipse preferences - XML Files formatting, create process with BPMN designer and see generated BPMN XML. Actual results: Generated BPMN XML source file has always 2 spaces for indentation. Expected results: Generated BPMN XML source file follows the specified XML formatting settings.
This is probably an issue in the XML serializer used by EMF. I don't think it even knows about the XML editor's preferences; not sure what I can do about that...
There are only a few XML serialization "tweaks" available through the EMF public API; these are not controlled by the XML Editor's preference settings and, as far as I can tell, none of these control whether tab or space indenting is used. See http://download.eclipse.org/modeling/emf/emf/javadoc/2.4.2/org/eclipse/emf/ecore/xmi/XMLResource.html for more info. Closing this BZ as Won't Fix