trunk - group by must sort by visible text

[Ferdinand]

to make the "group by" function usable it must group by human group criteria which is the visible (translated) text
see attachment -

for a few llines human brain is able to deal with unsorted grouped list, but when it comes to more then 10-20 groups the usablity is near to zero

[Naresh(OpenERP) (nch-openerp)]

currently the sort will be dependent on the _order attribute of the field in group by if its a relational field(M2O) for other fields its fine.

[Ferdinand (office-chricar)]

class product_category(osv.osv):
...
     _order = "sequence, name"

in
product_demo.xml
there is no sequence defined for categories , hence it should be sorted by name

Or do I missunderstand something ?