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Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
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There seems to be a faulty Ruby test case. #9:
I think what my code produces is correct. It looks like the expected result is nesting the anchors in an unintended way. Thoughts?
Clever regex!