Is there any case that prevents us from just always doing this, not even having it as a parameter? Is there anything in the interface that this breaks?

The point of the separator is to add some break in the enum items, to me it makes sense if the expand case takes that into account automatically.

I talked to Bastien about this, there may be a way to have grid flow take care of this without the need to even define separators. I guess just to talk to each other and figure out if it's possible or if we still need this.

Using grid_flow

I will eventually render 5-6 items, so the alignment is not really nice. I expected that even_columns or even_rows would take care of this. For example when rendering 5 items all items will be rendered as a fully horizontal and vertical aligned.

@Brecht Van Lommel (brecht) @Campbell Barton (campbellbarton)

I discussed with @Bastien Montagne (mont29). We changed the logic to work within a grid_flow and a column_flow. Also cleaned up the code as it fitted better on the original code. When you have time please review!