Adapt standard door to pocket door---Locks

Goal: 1. Replace standard door to bathroom with a pocket door 2. Use existing door slab 3. Adapt standard door lock to pocket door latch
No problem framing the pocket door, but for the sake of economy:
I'd like to use the existing door panel, there will of course be holes for the knobs and latch mechanism. Is there anything on the market that allows replacement of the old latch set with a pocket door latch-one that would allow the door to fully retract in to the wall?
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Fill and smooth the old holes. Redrill and mortice for pocket

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How do you fill a hole in a door?

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