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Comment on Undo codes for Japanese elevator floor buttonsparent

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I worked in a building once where the close door button started a 3ish second timer then would close. As a side effect if the door was close to closing already it would sometimes actually lengthen the time the door was open. Drove me nuts when people would come in late and hit the button.

Bad programmers are all around us. It could have been fixed with a min() call

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