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new entry in design notes

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John Clements 2010-12-04 08:28:44 -08:00
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doc/release-notes/stepper/DESIGN-NOTES
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@ -912,3 +912,18 @@ harder than I expected. Don't ask me about lazy scheme. Or Advanced. Grr!
**************
Okay, you can ask me about lazy scheme now. Err, lazy racket. The answer
is simple: Stephen Chang is working on it :). I'm back in here trying to
figure out why I changed to stepper-syntax-property, and I think the
answer is that Back In The Day, it wasn't possible to extract all of the
syntax properties associated with the stepper. Hmm... actually, maybe I
should leave this alone; do I want programs to be able to mangle their
own stepper marks? No, probably not.
Other changes on the GUI side: the stepper now eagerly precomputes
steps, rather than doing a complex back-and-forth locking; this is less
code, and works better, too.
Nice to be here again...
2010-12-04