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(defun add-timeout (secs function object &optional resignal)
(run-at-time secs resignal function object))
(defun disable-timeout (timeout)
(cancel-timer timeout))
(defun copy-tree (tree)
(if (consp tree)
(cons (copy-tree (car tree))
(copy-tree (cdr tree)))
(if (vectorp tree)
(let ((new (copy-sequence tree))
(i (1- (length new))))
(while (>= i 0)
(aset new i (copy-tree (aref new i)))
(setq i (1- i)))
new)
tree)))
(fset 'current-time-seconds 'current-time)
(defun keymap-parent (keymap)
(let ((tail (cdr keymap)))
(while (and tail (not (eq (car tail) 'keymap)))
(setq tail (cdr tail)))
tail))
(defun set-keymap-parent (keymap new-parent)
(let ((tail (cdr keymap)))
(while (and tail (cdr tail) (not (eq (car (cdr tail)) 'keymap)))
(setq tail (cdr tail)))
(if tail
(setcdr tail new-parent))))
(defun remove-hook (hook-var function)
(if (boundp 'hook-var)
(set hook-var (delq function (symbol-value hook-var)))))
(defun remprop (symbol prop)
(let ((plist (symbol-plist symbol)))
(while (eq (car plist) prop)
(setplist symbol (setq plist (cdr (cdr plist)))))
(while plist
(if (eq (nth 2 plist) prop)
(setcdr (cdr plist) (nthcdr 4 plist)))
(setq plist (cdr (cdr plist))))))
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