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diff --git a/lisp/emacs-lisp/timer-list.el b/lisp/emacs-lisp/timer-list.el
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+;;; timer-list.el --- list active timers in a buffer  -*- lexical-binding:t -*-
+
+;; Copyright (C) 2016-2022 Free Software Foundation, Inc.
+
+;; Maintainer: emacs-devel@gnu.org
+;; Package: emacs
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs is free software: you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; GNU Emacs is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
+
+;;; Commentary:
+
+;;; Code:
+
+(defvar cl-print-compiled)
+(defvar cl-print-compiled-button)
+
+;;;###autoload
+(defun list-timers (&optional _ignore-auto _nonconfirm)
+  "List all timers in a buffer."
+  (interactive)
+  (pop-to-buffer-same-window (get-buffer-create "*timer-list*"))
+  (timer-list-mode)
+  (tabulated-list-init-header)
+  (setq tabulated-list-entries
+        (mapcar
+         (lambda (timer)
+           (list
+            nil
+            `[ ;; Idle.
+              ,(propertize
+                (if (aref timer 7) "   *" " ")
+                'help-echo "* marks idle timers"
+                'timer timer)
+              ;; Next time.
+              ,(propertize
+                (let ((time (list (aref timer 1)
+				  (aref timer 2)
+				  (aref timer 3))))
+                  (format "%12s"
+                          (format-seconds "%dd %hh %mm %z%,1ss"
+			                  (float-time
+			                   (if (aref timer 7)
+			                       time
+			                     (time-subtract time nil))))))
+                'help-echo "Time until next invocation")
+              ;; Repeat.
+              ,(let ((repeat (aref timer 4)))
+                 (cond
+                  ((numberp repeat)
+                   (propertize
+                    (format "%12s" (format-seconds
+                                    "%x%dd %hh %mm %z%,1ss" repeat))
+                    'help-echo "Repeat interval"))
+                  ((null repeat)
+                   (propertize "           -" 'help-echo "Runs once"))
+                  (t
+                   (format "%12s" repeat))))
+              ;; Function.
+              ,(propertize
+                (let ((cl-print-compiled 'static)
+                      (cl-print-compiled-button nil)
+                      (print-escape-newlines t))
+                  (cl-prin1-to-string (aref timer 5)))
+                'help-echo "Function called by timer")]))
+         (append timer-list timer-idle-list)))
+  (tabulated-list-print))
+;; This command can be destructive if they don't know what they are
+;; doing.  Kids, don't try this at home!
+;;;###autoload (put 'list-timers 'disabled "Beware: manually canceling timers can ruin your Emacs session.")
+
+(defvar-keymap timer-list-mode-map
+  "c" #'timer-list-cancel
+  :menu
+  '("Timers"
+    ["Cancel" timer-list-cancel t]
+    ["Quit" quit-window]))
+
+(define-derived-mode timer-list-mode tabulated-list-mode "Timer-List"
+  "Mode for listing and controlling timers."
+  (buffer-disable-undo)
+  (setq-local revert-buffer-function #'list-timers)
+  (setq tabulated-list-format
+        '[("Idle" 6 timer-list--idle-predicate)
+          ("Next" 12 timer-list--next-predicate :right-align t :pad-right 1)
+          ("Repeat" 12 timer-list--repeat-predicate :right-align t :pad-right 1)
+          ("Function" 10 timer-list--function-predicate)]))
+
+(defun timer-list--idle-predicate (A B)
+  "Predicate to sort Timer-List by the Idle column."
+  (let ((iA (aref (cadr A) 0))
+        (iB (aref (cadr B) 0)))
+    (cond ((string= iA iB)
+           (timer-list--next-predicate A B))
+          ((string= iA "   *") nil)
+          (t t))))
+
+(defun timer-list--next-predicate (A B)
+  "Predicate to sort Timer-List by the Next column."
+  (let ((nA (string-to-number (aref (cadr A) 1)))
+        (nB (string-to-number (aref (cadr B) 1))))
+    (< nA nB)))
+
+(defun timer-list--repeat-predicate (A B)
+  "Predicate to sort Timer-List by the Repeat column."
+  (let ((rA (aref (cadr A) 2))
+        (rB (aref (cadr B) 2)))
+    (string< rA rB)))
+
+(defun timer-list--function-predicate (A B)
+  "Predicate to sort Timer-List by the Function column."
+  (let ((fA (aref (cadr A) 3))
+        (fB (aref (cadr B) 3)))
+    (string< fA fB)))
+
+(defun timer-list-cancel ()
+  "Cancel the timer on the line under point."
+  (interactive)
+  (let ((timer (get-text-property (line-beginning-position) 'timer))
+        (inhibit-read-only t))
+    (unless timer
+      (error "No timer on the current line"))
+    (cancel-timer timer)
+    (delete-region (line-beginning-position)
+                   (line-beginning-position 2))))
+
+(provide 'timer-list)
+
+;;; timer-list.el ends here