the new WeakKeyDictionary

Chris Muller asqueaker at
Thu Jun 21 02:21:34 UTC 2007

I've been running with the new WeakKeyDictionary lately.

It seems to speed things up, but unfortunately I'm still encountering
occasional problems; either "No free space" or "Index out of range"
errors.  The latter, particularly, when saving the image.

I haven't been able to make a simple script that reproduces the
problem, but here is at least a stack trace.

I do also have an image saved that, upon launching, immediately
encounters the problem after starting up.

Thanks for your work on this Martin, I hope we can get it completely

  - Chris
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