The Slurp code is a mess

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I hate it! Damn you past me!

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What do ci and ai even stand for!

Oh, current_index and after_index. Well it's still no good.

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Where the flip do I start even. I just want to throw it all in the garbage. At least it (mostly) works.

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Finally working on this. I should have made a release by now but I really wanted to fix this before doing so.

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I tried and failed. Reached a complete dead end. Looks like I am going to have to make some diagrams...