dictionary test + patch

[Lendvai Attila]

hi!

i've made some tests for dictionary.slate, and fixed two bugs i've
discovered with it.

i've also read the logs about breakOn: my intention with it is to
quietly catch a signal and continue execution. just like the Exhaustion
signal from streams... it makes code more readable. (altough i don't
know if it works the way i've written... :) and also it adds a speed
penalty i can't judge, but it's not a real issue. or maybe, it could
even be cheaper if i loop on a zillion of stream elements and skip a
zillion atEnd calls by using a signal handler, isn't it?

how is ensure similar to breakOn:?

sugar.slate is not included by default, nor is it used anywhere in the
sources. should it be avoided, or it's just ignored until there's a
bootstrapped system where you can use it everywhere?

that's all for today,

- 101

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