This issue was also raised at the last bug days; I think we also noted the following behavior which is bound to cause some grief:
sage: R.<x,x> = QQ[] sage: R = QQ['x, x'] sage: R.gen(0) * R.gen(1) x*x sage: _._maxima_() x^2 -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org