On Sat, 5 Jan 2008 15:49:30 +0900, Marcin Raczkowski <mailing.mr / gmail.com> wrote:
> I would only like to add that RMgick for example provides free method to
> release large images if they are not needed, and for me that's good
> thinkg.

That's only possible because RMagick is responsible for all references
to the image.
 
> solution to the above problem might be finding a way to assign Qnil to
> all references before forcefully removing actuall value.

Generally that isn't possible because there may be references from the C
stack.

-mental