elpa-queue - 0.2-5 main

This library provides a queue data structure for Emacs Lisp. The
queues can be used both as a first-in last-out (FILO) and as a
first-in first-out (FIFO) stack, i.e. elements can be added to the
front or back of the queue, and can be removed from the front. (This
type of data structure is sometimes called an "output-restricted
deque".)