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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.
Good catch!
You can work around this by escaping all special characters in the string before passing it to the RegExp constructor. Sadly, there's no built-in way to do this, you can make a function like this:
RegExp.prototype.escape = function(string) {
return string.replace(/[-/\^$*+?.()|[]{}]/g, '\$&')
};