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Supporting these functions was a little tricky. For example, how should we
handle calling cycle/remove on the item that is currently focused? After
attempting to be clever, I decided to just set the value to nil and let the
consumer decide what is best for them. I can always support a more opinionated
version that fallsback to previous-index if previous-index is set. But until I
have a better idea of how I'm going to consume this, I think nil is the best
option.
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I oftentimes call `cycle/focus` and pass `(lambda (a) (equal a b))`. This
function should tighten up my code.
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Add predicate for determining if a cycle contains items.
Updated cycle/{new,from-list} to support setting current-index to nil when a
consumer calls it with an empty list.
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Moving all of my Emacs-related files into their own directory at the root of
this repository.
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