Honesty is the Best Policy

;;; Please do not try to understand this code unless you have a VERY
;;; good reason to do so.  I gave up trying to figure it out well
;;; enough to explain it, long ago.

This precedes paredit-forward-sexps-to-kill which appears to be code that deals with the problem that commands operating on S-expressions may fail mysteriously if there’s no trailing newline afterwards.

Credits go to contrapunctus.