I've just committed a (very) minor documentation change to the inbox for PositionalStream>>upToAll: that I'd request be put into trunk.
http://source.squeak.org/inbox/Collections-cbc.740.mcz
The request is: PositionalStream>>backUpTo: backs up to a collection. This name/pattern doesn't match other methods in this class - I would have expected it to back up to a specific object, not a collection. So, I'd request that we could change this to #backUpToAll: to make the behavior more apparent.
Apparently #backUpTo: is only used outside of the image - no callers in the latest trunk image (other than the tests, of course).
If this is acceptable, I'd be happy to make the changes.
Thanks,
cbc