diff options
Diffstat (limited to 'lisp/emacs-lisp/cl-extra.el')
| -rw-r--r-- | lisp/emacs-lisp/cl-extra.el | 16 |
1 files changed, 7 insertions, 9 deletions
diff --git a/lisp/emacs-lisp/cl-extra.el b/lisp/emacs-lisp/cl-extra.el index 13988db9a86..a2400a0ba37 100644 --- a/lisp/emacs-lisp/cl-extra.el +++ b/lisp/emacs-lisp/cl-extra.el @@ -1,6 +1,6 @@ ;;; cl-extra.el --- Common Lisp features, part 2 -*- lexical-binding: t -*- -;; Copyright (C) 1993, 2000-2018 Free Software Foundation, Inc. +;; Copyright (C) 1993, 2000-2019 Free Software Foundation, Inc. ;; Author: Dave Gillespie <daveg@synaptics.com> ;; Keywords: extensions @@ -438,9 +438,7 @@ as an integer unless JUNK-ALLOWED is non-nil." ;; Random numbers. (defun cl--random-time () - (let* ((time (copy-sequence (current-time-string))) (i (length time)) (v 0)) - (while (>= (cl-decf i) 0) (setq v (+ (* v 3) (aref time i)))) - v)) + (car (encode-time nil t))) ;;;###autoload (autoload 'cl-random-state-p "cl-extra") (cl-defstruct (cl--random-state @@ -484,7 +482,7 @@ Optional second arg STATE is a random-state object." If STATE is t, return a new state object seeded from the time of day." (unless state (setq state cl--random-state)) (if (cl-random-state-p state) - (copy-tree state t) + (copy-sequence state) (cl--make-random-state (if (integerp state) state (cl--random-time))))) ;; Implementation limits. @@ -596,10 +594,10 @@ too large if positive or too small if negative)." ;;;###autoload (defun cl-list-length (x) "Return the length of list X. Return nil if list is circular." - (let ((n 0) (fast x) (slow x)) - (while (and (cdr fast) (not (and (eq fast slow) (> n 0)))) - (setq n (+ n 2) fast (cdr (cdr fast)) slow (cdr slow))) - (if fast (if (cdr fast) nil (1+ n)) n))) + (cl-check-type x list) + (condition-case nil + (length x) + (circular-list))) ;;;###autoload (defun cl-tailp (sublist list) |