fix for asserts added in own recent commit with more strict type-checking

- BMO_slot_copy now only copies compatible elements.

other minor changes
- don't use text.format(...), convention for UI scripts is C style string formatting.
- rename bmo_edgenet_prepare --> bmo_edgenet_prepare_exec
- float/double warning in bevel.

source/blender/editors/mesh/editmesh_utils.c

@@ -265,9 +265,11 @@ int EDBM_op_callf(BMEditMesh *em, wmOperator *op, const char *fmt, ...)
 
 int EDBM_op_call_and_selectf(BMEditMesh *em, wmOperator *op, const char *select_slot_out, const char *fmt, ...)
 {
+	BMOpSlot *slot_select_out;
 	BMesh *bm = em->bm;
 	BMOperator bmop;
 	va_list list;
+	char hflag;
 
 	va_start(list, fmt);
 
@@ -283,9 +285,12 @@ int EDBM_op_call_and_selectf(BMEditMesh *em, wmOperator *op, const char *select_
 
 	BMO_op_exec(bm, &bmop);
 
+	slot_select_out = BMO_slot_get(bmop.slots_out, select_slot_out);
+	hflag = slot_select_out->slot_subtype.elem & BM_ALL_NOLOOP;
+
 	BM_mesh_elem_hflag_disable_all(em->bm, BM_VERT | BM_EDGE | BM_FACE, BM_ELEM_SELECT, FALSE);
 
-	BMO_slot_buffer_hflag_enable(em->bm, bmop.slots_out, select_slot_out, BM_ALL_NOLOOP, BM_ELEM_SELECT, TRUE);
+	BMO_slot_buffer_hflag_enable(em->bm, bmop.slots_out, select_slot_out, hflag, BM_ELEM_SELECT, TRUE);
 
 	va_end(list);
 	return EDBM_op_finish(em, &bmop, op, TRUE);