[PD] ehu abstractions to be released

[y]

Hans-Christoph Steiner wrote:
> I agree with you here probably almost all of the time, but there are  
> some objects out there, like cyclone/prepend, which I find cause me  
> much less groans and gotchas than other versions.

Hallo.

Sorry if I miss the obvious here but why does [cyclone/prepend] cause 
you "much less groans and gotchas" than [list prepend] ?

Cheers.
_y