Product search doesn't work correctly

Hi,

It seems that there is a bug when you search a product. If you try to find stock moves with a filter on the product name, the filter is only applied on the default_code field of the product_product object, and not on the "name" field of product_product. However if you do the search directly from the product search view, you are able to apply a filter on the name or on the default_code field, so it works.

The problem comes from the "name_search" method of the product_product class. There is a test line 614 in addons/product/product.py file :

if len(ids) < limit:
    ids.update(self.search(cr, user, args + [('name',operator,name)], limit=(limit-len(ids)), context=context))

but this test is always wrong when the search is ran undirectly, like from the stock_move search view, because the "limit" value is always set to None. In this case the name_search method is called by _get_expression in server/openerp/osv/expression.py file, line 593 :

res_ids = [x[0] for x in field_obj.name_search(cr, uid, right, [], operator, limit=None, context=c)]

So the search on the "name" field in the name_search method of product_product is never done.