Merge from trunk

76 files changed, 3261 insertions, 1058 deletions

diff --git a/lisp/emacs-lisp/.gitignore b/lisp/emacs-lisp/.gitignore
index 88830a1c6e8..133e79e817a 100644
--- a/lisp/emacs-lisp/.gitignore
+++ b/lisp/emacs-lisp/.gitignore
@@ -1,3 +1,2 @@
 !*-loaddefs.el
 
-# arch-tag: d0a60bce-b886-4817-b4c3-9a81ba0308bc
diff --git a/lisp/emacs-lisp/advice.el b/lisp/emacs-lisp/advice.el
index 578e0877d30..915a726ae11 100644
--- a/lisp/emacs-lisp/advice.el
+++ b/lisp/emacs-lisp/advice.el
@@ -1,7 +1,6 @@
 ;;; advice.el --- an overloading mechanism for Emacs Lisp functions
 
-;; Copyright (C) 1993, 1994, 2000, 2001, 2002, 2003, 2004,
-;;   2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+;; Copyright (C) 1993-1994, 2000-2011 Free Software Foundation, Inc.
 
 ;; Author: Hans Chalupsky <hans@cs.buffalo.edu>
 ;; Maintainer: FSF
@@ -3008,9 +3007,7 @@ in any of these classes."
     (setq usage (if (null usage) t (setq origdoc (cdr usage)) (car usage)))
     (if origdoc (setq paragraphs (list origdoc)))
     (unless (eq style 'plain)
-      (push (propertize (concat "This " origtype " is advised.")
-			'face 'font-lock-warning-face)
-	    paragraphs))
+      (push (concat "This " origtype " is advised.") paragraphs))
     (ad-dolist (class ad-advice-classes)
       (ad-dolist (advice (ad-get-enabled-advices function class))
 	(setq advice-docstring
@@ -3966,5 +3963,4 @@ Use only in REAL emergencies."
 
 (provide 'advice)
 
-;; arch-tag: 29f8c9a1-8c88-471f-95d7-e28541c6b7c0
 ;;; advice.el ends here
diff --git a/lisp/emacs-lisp/assoc.el b/lisp/emacs-lisp/assoc.el
index ccab5d90c09..aa85916cc3f 100644
--- a/lisp/emacs-lisp/assoc.el
+++ b/lisp/emacs-lisp/assoc.el
@@ -1,7 +1,6 @@
 ;;; assoc.el --- insert/delete/sort functions on association lists
 
-;; Copyright (C) 1996, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
-;;   2009, 2010  Free Software Foundation, Inc.
+;; Copyright (C) 1996, 2001-2011  Free Software Foundation, Inc.
 
 ;; Author: Barry A. Warsaw <bwarsaw@cen.com>
 ;; Keywords: extensions
@@ -138,5 +137,4 @@ extra values are ignored.  Returns the created alist."
 
 (provide 'assoc)
 
-;; arch-tag: 3e58bd89-d912-4b74-a0dc-6ed9735922bc
 ;;; assoc.el ends here
diff --git a/lisp/emacs-lisp/authors.el b/lisp/emacs-lisp/authors.el
index ae490550021..163af883334 100644
--- a/lisp/emacs-lisp/authors.el
+++ b/lisp/emacs-lisp/authors.el
@@ -1,7 +1,6 @@
 ;;; authors.el --- utility for maintaining Emacs' AUTHORS file -*-coding: utf-8;-*-
 
-;; Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
-;;   2009, 2010  Free Software Foundation, Inc.
+;; Copyright (C) 2000-2011  Free Software Foundation, Inc.
 
 ;; Author: Gerd Moellmann <gerd@gnu.org>
 ;; Maintainer: Kim F. Storm <storm@cua.dk>
diff --git a/lisp/emacs-lisp/autoload.el b/lisp/emacs-lisp/autoload.el
index 4dd1a118ebd..7b610d11b0f 100644
--- a/lisp/emacs-lisp/autoload.el
+++ b/lisp/emacs-lisp/autoload.el
@@ -1,8 +1,6 @@
 ;; autoload.el --- maintain autoloads in loaddefs.el
 
-;; Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 2001, 2002, 2003,
-;;   2004, 2005, 2006, 2007, 2008, 2009, 2010
-;;   Free Software Foundation, Inc.
+;; Copyright (C) 1991-1997, 2001-2011  Free Software Foundation, Inc.
 
 ;; Author: Roland McGrath <roland@gnu.org>
 ;; Keywords: maint
diff --git a/lisp/emacs-lisp/avl-tree.el b/lisp/emacs-lisp/avl-tree.el
index cd5bae594d0..0a637da0bc1 100644
--- a/lisp/emacs-lisp/avl-tree.el
+++ b/lisp/emacs-lisp/avl-tree.el
@@ -1,6 +1,6 @@
 ;;; avl-tree.el --- balanced binary trees, AVL-trees
 
-;; Copyright (C) 1995, 2007, 2008, 2009, 2010  Free Software Foundation, Inc.
+;; Copyright (C) 1995, 2007-2011  Free Software Foundation, Inc.
 
 ;; Author: Per Cederqvist <ceder@lysator.liu.se>
 ;;	Inge Wallin <inge@lysator.liu.se>
@@ -466,5 +466,4 @@ If there is no such element in the tree, the value is nil."
 
 (provide 'avl-tree)
 
-;; arch-tag: 47e26701-43c9-4222-bd79-739eac6357a9
 ;;; avl-tree.el ends here
diff --git a/lisp/emacs-lisp/backquote.el b/lisp/emacs-lisp/backquote.el
index 96e2fb41e89..34e316b2e48 100644
--- a/lisp/emacs-lisp/backquote.el
+++ b/lisp/emacs-lisp/backquote.el
@@ -1,7 +1,6 @@
 ;;; backquote.el --- implement the ` Lisp construct
 
-;; Copyright (C) 1990, 1992, 1994, 2001, 2002, 2003, 2004,
-;;   2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+;; Copyright (C) 1990, 1992, 1994, 2001-2011 Free Software Foundation, Inc.
 
 ;; Author: Rick Sladkey <jrs@world.std.com>
 ;; Maintainer: FSF
@@ -241,5 +240,4 @@ LEVEL is only used internally and indicates the nesting level:
 	tail))
      (t (cons 'list heads)))))
 
-;; arch-tag: 1a26206a-6b5e-4c56-8e24-2eef0f7e0e7a
 ;;; backquote.el ends here
diff --git a/lisp/emacs-lisp/benchmark.el b/lisp/emacs-lisp/benchmark.el
index 26c9b4580ce..86063c512c6 100644
--- a/lisp/emacs-lisp/benchmark.el
+++ b/lisp/emacs-lisp/benchmark.el
@@ -1,7 +1,6 @@
 ;;; benchmark.el --- support for benchmarking code
 
-;; Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
-;;   Free Software Foundation, Inc.
+;; Copyright (C) 2003-2011  Free Software Foundation, Inc.
 
 ;; Author: Dave Love  <fx@gnu.org>
 ;; Keywords: lisp, extensions
@@ -116,5 +115,4 @@ For non-interactive use see also `benchmark-run' and
 
 (provide 'benchmark)
 
-;; arch-tag: be570e24-4b51-4784-adf3-fa2b56c31946
 ;;; benchmark.el ends here
diff --git a/lisp/emacs-lisp/bindat.el b/lisp/emacs-lisp/bindat.el
index 02a16ed3128..fd98b5f41a7 100644
--- a/lisp/emacs-lisp/bindat.el
+++ b/lisp/emacs-lisp/bindat.el
@@ -1,6 +1,6 @@
 ;;; bindat.el --- binary data structure packing and unpacking.
 
-;; Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+;; Copyright (C) 2002-2011 Free Software Foundation, Inc.
 
 ;; Author: Kim F. Storm <storm@cua.dk>
 ;; Assignment name: struct.el
@@ -649,5 +649,4 @@ The port (if any) is omitted.  IP can be a string, as well."
 
 (provide 'bindat)
 
-;; arch-tag: 5e6708c3-03e2-4ad7-9885-5041b779c3fb
 ;;; bindat.el ends here
diff --git a/lisp/emacs-lisp/byte-opt.el b/lisp/emacs-lisp/byte-opt.el
index 24b762c9cb7..02107b0e11f 100644
--- a/lisp/emacs-lisp/byte-opt.el
+++ b/lisp/emacs-lisp/byte-opt.el
@@ -1,7 +1,6 @@
 ;;; byte-opt.el --- the optimization passes of the emacs-lisp byte compiler
 
-;; Copyright (C) 1991, 1994, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
-;;   2007, 2008, 2009, 2010  Free Software Foundation, Inc.
+;; Copyright (C) 1991, 1994, 2000-2011  Free Software Foundation, Inc.
 
 ;; Author: Jamie Zawinski <jwz@lucid.com>
 ;;	Hallvard Furuseth <hbf@ulrik.uio.no>
diff --git a/lisp/emacs-lisp/byte-run.el b/lisp/emacs-lisp/byte-run.el
index 0388435dbc2..524f4f1b465 100644
--- a/lisp/emacs-lisp/byte-run.el
+++ b/lisp/emacs-lisp/byte-run.el
@@ -1,7 +1,6 @@
 ;;; byte-run.el --- byte-compiler support for inlining
 
-;; Copyright (C) 1992, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
-;;   2009, 2010  Free Software Foundation, Inc.
+;; Copyright (C) 1992, 2001-2011  Free Software Foundation, Inc.
 
 ;; Author: Jamie Zawinski <jwz@lucid.com>
 ;;	Hallvard Furuseth <hbf@ulrik.uio.no>
@@ -292,5 +291,4 @@ In interpreted code, this is entirely equivalent to `progn'."
 ;;       (file-format emacs19))"
 ;;   nil)
 
-;; arch-tag: 76f8328a-1f66-4df2-9b6d-5c3666dc05e9
 ;;; byte-run.el ends here
diff --git a/lisp/emacs-lisp/bytecomp.el b/lisp/emacs-lisp/bytecomp.el
index 82b5ed3367d..be3e1ed617c 100644
--- a/lisp/emacs-lisp/bytecomp.el
+++ b/lisp/emacs-lisp/bytecomp.el
@@ -1,7 +1,6 @@
 ;;; bytecomp.el --- compilation of Lisp code into byte code
 
-;; Copyright (C) 1985, 1986, 1987, 1992, 1994, 1998, 2000, 2001, 2002,
-;;   2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
+;; Copyright (C) 1985-1987, 1992, 1994, 1998, 2000-2011
 ;;   Free Software Foundation, Inc.
 
 ;; Author: Jamie Zawinski <jwz@lucid.com>
@@ -2177,9 +2176,9 @@ list that represents a doc string reference.
                         ;; to objects already output
                         ;; (for instance, gensyms in the arg list).
                         (let (non-nil)
-                          (dotimes (i (length print-number-table))
-                            (if (aref print-number-table i)
-                                (setq non-nil t)))
+                          (when (hash-table-p print-number-table)
+                            (maphash (lambda (k v) (if v (setq non-nil t)))
+                                     print-number-table))
                           (not non-nil)))
                    ;; Output the byte code and constants specially
                    ;; for lazy dynamic loading.
diff --git a/lisp/emacs-lisp/chart.el b/lisp/emacs-lisp/chart.el
index 84bfd706afc..01eb1efdc3b 100644
--- a/lisp/emacs-lisp/chart.el
+++ b/lisp/emacs-lisp/chart.el
@@ -1,7 +1,7 @@
 ;;; chart.el --- Draw charts (bar charts, etc)
 
-;; Copyright (C) 1996, 1998, 1999, 2001, 2004, 2005, 2007, 2008, 2009,
-;;   2010  Free Software Foundation, Inc.
+;; Copyright (C) 1996, 1998-1999, 2001, 2004-2005, 2007-2011
+;;   Free Software Foundation, Inc.
 
 ;; Author: Eric M. Ludlam  <zappo@gnu.org>
 ;; Version: 0.2
@@ -62,17 +62,13 @@
 (require 'eieio)
 
 ;;; Code:
-(defvar chart-map (make-sparse-keymap) "Keymap used in chart mode.")
+(defvar chart-mode-map (make-sparse-keymap) "Keymap used in chart mode.")
+(define-obsolete-variable-alias 'chart-map 'chart-mode-map "24.1")
 
 (defvar chart-local-object nil
   "Local variable containing the locally displayed chart object.")
 (make-variable-buffer-local 'chart-local-object)
 
-(defvar chart-face-list nil
-  "Faces used to colorize charts.
-List is limited currently, which is ok since you really can't display
-too much in text characters anyways.")
-
 (defvar chart-face-color-list '("red" "green" "blue"
 				"cyan" "yellow" "purple")
   "Colors to use when generating `chart-face-list'.
@@ -90,41 +86,42 @@ Useful if new Emacs is used on B&W display.")
   :group 'eieio
   :type 'boolean)
 
-(if (and (if (fboundp 'display-color-p)
-	     (display-color-p)
-	   window-system)
-	 (not chart-face-list))
-    (let ((cl chart-face-color-list)
-	  (pl chart-face-pixmap-list)
-	  nf)
-      (while cl
-	(setq nf (make-face (intern (concat "chart-" (car cl) "-" (car pl)))))
-	(if (condition-case nil
-		(> (x-display-color-cells) 4)
-	      (error t))
-	    (set-face-background nf (car cl))
-	  (set-face-background nf "white"))
-	(set-face-foreground nf "black")
-	(if (and chart-face-use-pixmaps
-		 pl
-		 (fboundp 'set-face-background-pixmap))
-	    (condition-case nil
-		(set-face-background-pixmap nf (car pl))
-	      (error (message "Cannot set background pixmap %s" (car pl)))))
-	(setq chart-face-list (cons nf chart-face-list))
-	(setq cl (cdr cl)
-	      pl (cdr pl)))))
-
-(defun chart-mode ()
+(defvar chart-face-list
+  (if (if (fboundp 'display-color-p)
+          (display-color-p)
+        window-system)
+      (let ((cl chart-face-color-list)
+            (pl chart-face-pixmap-list)
+            (faces ())
+            nf)
+        (while cl
+          (setq nf (make-face
+                    (intern (concat "chart-" (car cl) "-" (car pl)))))
+          (set-face-background nf (if (condition-case nil
+                                          (> (x-display-color-cells) 4)
+                                        (error t))
+                                      (car cl)
+                                    "white"))
+          (set-face-foreground nf "black")
+          (if (and chart-face-use-pixmaps
+                   pl
+                   (fboundp 'set-face-background-pixmap))
+              (condition-case nil
+                  (set-face-background-pixmap nf (car pl))
+                (error (message "Cannot set background pixmap %s" (car pl)))))
+          (push nf faces)
+          (setq cl (cdr cl)
+                pl (cdr pl)))
+        faces))
+  "Faces used to colorize charts.
+List is limited currently, which is ok since you really can't display
+too much in text characters anyways.")
+
+(define-derived-mode chart-mode fundamental-mode "CHART"
   "Define a mode in Emacs for displaying a chart."
-  (kill-all-local-variables)
-  (use-local-map chart-map)
-  (setq major-mode 'chart-mode
-	mode-name "CHART")
   (buffer-disable-undo)
   (set (make-local-variable 'font-lock-global-modes) nil)
-  (font-lock-mode -1)
-  (run-hooks 'chart-mode-hook)
+  (font-lock-mode -1)                   ;Isn't it off already?  --Stef
   )
 
 (defun chart-new-buffer (obj)
diff --git a/lisp/emacs-lisp/check-declare.el b/lisp/emacs-lisp/check-declare.el
index c027f31f3aa..f6ff67a90c3 100644
--- a/lisp/emacs-lisp/check-declare.el
+++ b/lisp/emacs-lisp/check-declare.el
@@ -1,6 +1,6 @@
 ;;; check-declare.el --- Check declare-function statements
 
-;; Copyright (C) 2007, 2008, 2009, 2010  Free Software Foundation, Inc.
+;; Copyright (C) 2007-2011  Free Software Foundation, Inc.
 
 ;; Author: Glenn Morris <rgm@gnu.org>
 ;; Keywords: lisp, tools, maint
@@ -314,5 +314,4 @@ Returns non-nil if any false statements are found."
 
 (provide 'check-declare)
 
-;; arch-tag: a4d6cdc4-deb7-4502-b327-0e4ef3d82d96
 ;;; check-declare.el ends here.
diff --git a/lisp/emacs-lisp/checkdoc.el b/lisp/emacs-lisp/checkdoc.el
index 0a3b3c94ff6..2d3b228cbd4 100644
--- a/lisp/emacs-lisp/checkdoc.el
+++ b/lisp/emacs-lisp/checkdoc.el
@@ -1,7 +1,6 @@
 ;;; checkdoc.el --- check documentation strings for style requirements
 
-;; Copyright (C) 1997, 1998, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
-;;   2008, 2009, 2010  Free Software Foundation, Inc.
+;; Copyright (C) 1997-1998, 2001-2011  Free Software Foundation, Inc.
 
 ;; Author: Eric M. Ludlam <zappo@gnu.org>
 ;; Version: 0.6.2
@@ -1798,7 +1797,9 @@ Replace with \"%s\"? " original replace)
        (let ((found nil) (start (point)) (msg nil) (ms nil))
 	 (while (and (not msg)
 		     (re-search-forward
-		      "[^-([`':a-zA-Z]\\(\\w+[:-]\\(\\w\\|\\s_\\)+\\)[^]']"
+		      ;; Ignore manual page refereces like
+		      ;; git-config(1).
+		      "[^-([`':a-zA-Z]\\(\\w+[:-]\\(\\w\\|\\s_\\)+\\)[^](']"
 		      e t))
 	   (setq ms (match-string 1))
 	   ;; A . is a \s_ char, so we must remove periods from
diff --git a/lisp/emacs-lisp/cl-extra.el b/lisp/emacs-lisp/cl-extra.el
index b7c908882ed..885424ec726 100644
--- a/lisp/emacs-lisp/cl-extra.el
+++ b/lisp/emacs-lisp/cl-extra.el
@@ -1,7 +1,6 @@
 ;;; cl-extra.el --- Common Lisp features, part 2
 
-;; Copyright (C) 1993, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
-;;   2008, 2009, 2010  Free Software Foundation, Inc.
+;; Copyright (C) 1993, 2000-2011  Free Software Foundation, Inc.
 
 ;; Author: Dave Gillespie <daveg@synaptics.com>
 ;; Keywords: extensions
@@ -826,5 +825,4 @@ This also does some trivial optimizations to make the form prettier."
 ;; generated-autoload-file: "cl-loaddefs.el"
 ;; End:
 
-;; arch-tag: bcd03437-0871-43fb-a8f1-ad0e0b5427ed
 ;;; cl-extra.el ends here
diff --git a/lisp/emacs-lisp/cl-indent.el b/lisp/emacs-lisp/cl-indent.el
index 4e7ada8851f..787f276ecae 100644
--- a/lisp/emacs-lisp/cl-indent.el
+++ b/lisp/emacs-lisp/cl-indent.el
@@ -1,7 +1,6 @@
 ;;; cl-indent.el --- enhanced lisp-indent mode
 
-;; Copyright (C) 1987, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
-;;   2008, 2009, 2010 Free Software Foundation, Inc.
+;; Copyright (C) 1987, 2000-2011 Free Software Foundation, Inc.
 
 ;; Author: Richard Mlynarik <mly@eddie.mit.edu>
 ;; Created: July 1987
@@ -691,5 +690,4 @@ For example, the function `case' has an indent property
 ;(put 'defclass 'common-lisp-indent-function '((&whole 2 &rest (&whole 2 &rest 1) &rest (&whole 2 &rest 1)))
 ;(put 'defgeneric 'common-lisp-indent-function 'defun)
 
-;; arch-tag: 7914d50f-92ec-4476-93fc-0f043a380e03
 ;;; cl-indent.el ends here
diff --git a/lisp/emacs-lisp/cl-loaddefs.el b/lisp/emacs-lisp/cl-loaddefs.el
index 74d7432bec6..05bfa0f262e 100644
--- a/lisp/emacs-lisp/cl-loaddefs.el
+++ b/lisp/emacs-lisp/cl-loaddefs.el
@@ -10,7 +10,7 @@
 ;;;;;;  ceiling* floor* isqrt lcm gcd cl-progv-before cl-set-frame-visible-p
 ;;;;;;  cl-map-overlays cl-map-intervals cl-map-keymap-recursively
 ;;;;;;  notevery notany every some mapcon mapcan mapl maplist map
-;;;;;;  cl-mapcar-many equalp coerce) "cl-extra" "cl-extra.el" "20c8c875ff1d11dd819e15a1f25afd73")
+;;;;;;  cl-mapcar-many equalp coerce) "cl-extra" "cl-extra.el" "60f6b85256416c5f2a0a3954a11523b6")
 ;;; Generated autoloads from cl-extra.el
 
 (autoload 'coerce "cl-extra" "\
@@ -282,7 +282,7 @@ Not documented
 ;;;;;;  do-all-symbols do-symbols dotimes dolist do* do loop return-from
 ;;;;;;  return block etypecase typecase ecase case load-time-value
 ;;;;;;  eval-when destructuring-bind function* defmacro* defun* gentemp
-;;;;;;  gensym) "cl-macs" "cl-macs.el" "34ea402a8756c7d74d27cdcecf35e3c3")
+;;;;;;  gensym) "cl-macs" "cl-macs.el" "8b2ce9c2ec0e273606bb37c333c4bdde")
 ;;; Generated autoloads from cl-macs.el
 
 (autoload 'gensym "cl-macs" "\
@@ -754,7 +754,7 @@ surrounded by (block NAME ...).
 ;;;;;;  find nsubstitute-if-not nsubstitute-if nsubstitute substitute-if-not
 ;;;;;;  substitute-if substitute delete-duplicates remove-duplicates
 ;;;;;;  delete-if-not delete-if delete* remove-if-not remove-if remove*
-;;;;;;  replace fill reduce) "cl-seq" "cl-seq.el" "7b7531276ddf8457abecdd487d3cf0b7")
+;;;;;;  replace fill reduce) "cl-seq" "cl-seq.el" "43e0c1183e738e1e1038cdd84fde8366")
 ;;; Generated autoloads from cl-seq.el
 
 (autoload 'reduce "cl-seq" "\
diff --git a/lisp/emacs-lisp/cl-macs.el b/lisp/emacs-lisp/cl-macs.el
index 725b98354af..bef334b544c 100644
--- a/lisp/emacs-lisp/cl-macs.el
+++ b/lisp/emacs-lisp/cl-macs.el
@@ -1,7 +1,6 @@
 ;;; cl-macs.el --- Common Lisp macros
 
-;; Copyright (C) 1993, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
-;;   2009, 2010  Free Software Foundation, Inc.
+;; Copyright (C) 1993, 2001-2011  Free Software Foundation, Inc.
 
 ;; Author: Dave Gillespie <daveg@synaptics.com>
 ;; Version: 2.02
diff --git a/lisp/emacs-lisp/cl-seq.el b/lisp/emacs-lisp/cl-seq.el
index a5070e4acea..fcd21b73de7 100644
--- a/lisp/emacs-lisp/cl-seq.el
+++ b/lisp/emacs-lisp/cl-seq.el
@@ -1,7 +1,6 @@
 ;;; cl-seq.el --- Common Lisp features, part 3
 
-;; Copyright (C) 1993, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
-;;   2008, 2009, 2010  Free Software Foundation, Inc.
+;; Copyright (C) 1993, 2001-2011  Free Software Foundation, Inc.
 
 ;; Author: Dave Gillespie <daveg@synaptics.com>
 ;; Version: 2.02
@@ -1018,5 +1017,4 @@ Atoms are compared by `eql'; cons cells are compared recursively.
 ;; generated-autoload-file: "cl-loaddefs.el"
 ;; End:
 
-;; arch-tag: ec1cc072-9006-4225-b6ba-d6b07ed1710c
 ;;; cl-seq.el ends here
diff --git a/lisp/emacs-lisp/cl-specs.el b/lisp/emacs-lisp/cl-specs.el
index 776ce5e9ca1..7359da65e07 100644
--- a/lisp/emacs-lisp/cl-specs.el
+++ b/lisp/emacs-lisp/cl-specs.el
@@ -1,7 +1,6 @@
 ;;; cl-specs.el --- Edebug specs for cl.el -*- no-byte-compile: t -*-
 
-;; Copyright (C) 1993, 2001, 2002, 2003, 2004, 2005,
-;;   2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+;; Copyright (C) 1993, 2001-2011 Free Software Foundation, Inc.
 ;; Author: Daniel LaLiberte <liberte@holonexus.org>
 ;; Keywords: lisp, tools, maint
 ;; Package: emacs
@@ -469,5 +468,4 @@
 (def-edebug-spec loop-d-type-spec
   (&or (loop-d-type-spec . [&or nil loop-d-type-spec]) cl-type-spec))
 
-;; arch-tag: b29aa3c2-cf67-4af8-9ee1-318fea61b478
 ;;; cl-specs.el ends here
diff --git a/lisp/emacs-lisp/cl.el b/lisp/emacs-lisp/cl.el
index 9b275255b27..1d2b82f82eb 100644
--- a/lisp/emacs-lisp/cl.el
+++ b/lisp/emacs-lisp/cl.el
@@ -1,7 +1,6 @@
 ;;; cl.el --- Common Lisp extensions for Emacs
 
-;; Copyright (C) 1993, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
-;;   2009, 2010  Free Software Foundation, Inc.
+;; Copyright (C) 1993, 2001-2011  Free Software Foundation, Inc.
 
 ;; Author: Dave Gillespie <daveg@synaptics.com>
 ;; Version: 2.02
@@ -676,5 +675,4 @@ If ALIST is non-nil, the new pairs are prepended to it."
 ;; byte-compile-warnings: (not cl-functions)
 ;; End:
 
-;; arch-tag: 5f07fa74-f153-4524-9303-21f5be125851
 ;;; cl.el ends here
diff --git a/lisp/emacs-lisp/copyright.el b/lisp/emacs-lisp/copyright.el
index 43eb61b0bee..582785a0e90 100644
--- a/lisp/emacs-lisp/copyright.el
+++ b/lisp/emacs-lisp/copyright.el
@@ -1,7 +1,6 @@
 ;;; copyright.el --- update the copyright notice in current buffer
 
-;; Copyright (C) 1991, 1992, 1993, 1994, 1995, 1998, 2001, 2002, 2003,
-;;   2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+;; Copyright (C) 1991-1995, 1998, 2001-2011  Free Software Foundation, Inc.
 
 ;; Author: Daniel Pfeiffer <occitan@esperanto.org>
 ;; Keywords: maint, tools
@@ -47,6 +46,7 @@ This is useful for ChangeLogs."
   :group 'copyright
   :type 'boolean
   :version "23.1")
+;;;###autoload(put 'copyright-at-end-flag 'safe-local-variable 'booleanp)
 
 (defcustom copyright-regexp
  "\\(©\\|@copyright{}\\|[Cc]opyright\\s *:?\\s *\\(?:(C)\\)?\
@@ -66,6 +66,11 @@ someone else or to a group for which you do not work."
   :group 'copyright
   :type 'regexp)
 
+;; The worst that can happen is a malicious regexp that overflows in
+;; the regexp matcher, a minor nuisance.  It's a pain to be always
+;; prompted if you want to put this in a dir-locals.el.
+;;;###autoload(put 'copyright-names-regexp 'safe-local-variable 'stringp)
+
 (defcustom copyright-years-regexp
  "\\(\\s *\\)\\([1-9]\\([-0-9, ';/*%#\n\t]\\|\\s<\\|\\s>\\)*[0-9]+\\)"
   "Match additional copyright notice years.
@@ -73,6 +78,19 @@ The second \\( \\) construct must match the years."
   :group 'copyright
   :type 'regexp)
 
+;; See "Copyright Notices" in maintain.info.
+;; TODO? 'end only for ranges at the end, other for all ranges.
+;; Minimum limit on the size of a range?
+(defcustom copyright-year-ranges nil
+  "Non-nil if individual consecutive years should be replaced with a range.
+For example: 2005, 2006, 2007, 2008 might be replaced with 2005-2008.
+If you use ranges, you should add an explanatory note in a README file.
+The function `copyright-fix-year' respects this variable."
+  :group 'copyright
+  :type 'boolean
+  :version "24.1")
+
+;;;###autoload(put 'copyright-year-ranges 'safe-local-variable 'booleanp)
 
 (defcustom copyright-query 'function
   "If non-nil, ask user before changing copyright.
@@ -120,78 +138,88 @@ When this is `function', only ask when called non-interactively."
 	(< (point) (- (point-max) copyright-limit))
       (> (point) (+ (point-min) copyright-limit)))))
 
+(defun copyright-find-copyright ()
+  "Return non-nil if a copyright header suitable for updating is found.
+The header must match `copyright-regexp' and `copyright-names-regexp', if set.
+This function sets the match-data that `copyright-update-year' uses."
+  (widen)
+  (goto-char (copyright-start-point))
+  (condition-case err
+      ;; (1) Need the extra \\( \\) around copyright-regexp because we
+      ;; goto (match-end 1) below. See note (2) below.
+      (copyright-re-search (concat "\\(" copyright-regexp
+				   "\\)\\([ \t]*\n\\)?.*\\(?:"
+				   copyright-names-regexp "\\)")
+			   (copyright-limit)
+			   t)
+    ;; In case the regexp is rejected.  This is useful because
+    ;; copyright-update is typically called from before-save-hook where
+    ;; such an error is very inconvenient for the user.
+    (error (message "Can't update copyright: %s" err) nil)))
+
+(defun copyright-find-end ()
+  "Possibly adjust the search performed by `copyright-find-copyright'.
+If the years continue onto multiple lines that are marked as comments,
+skips to the end of all the years."
+  (while (save-excursion
+	   (and (eq (following-char) ?,)
+		(progn (forward-char 1) t)
+		(progn (skip-chars-forward " \t") (eolp))
+		comment-start-skip
+		(save-match-data
+		  (forward-line 1)
+		  (and (looking-at comment-start-skip)
+		       (goto-char (match-end 0))))
+		(looking-at-p copyright-years-regexp)))
+    (forward-line 1)
+    (re-search-forward comment-start-skip)
+    ;; (2) Need the extra \\( \\) so that the years are subexp 3, as
+    ;; they are at note (1) above.
+    (re-search-forward (format "\\(%s\\)" copyright-years-regexp))))
+
 (defun copyright-update-year (replace noquery)
-  (when
-      (condition-case err
-	  ;; (1) Need the extra \\( \\) around copyright-regexp because we
-	  ;; goto (match-end 1) below. See note (2) below.
-	  (copyright-re-search (concat "\\(" copyright-regexp
-				       "\\)\\([ \t]*\n\\)?.*\\(?:"
-				       copyright-names-regexp "\\)")
-			       (copyright-limit)
-			       t)
-	;; In case the regexp is rejected.  This is useful because
-	;; copyright-update is typically called from before-save-hook where
-	;; such an error is very inconvenient for the user.
-	(error (message "Can't update copyright: %s" err) nil))
-    (goto-char (match-end 1))
-    ;; If the years are continued onto multiple lines
-    ;; that are marked as comments, skip to the end of the years anyway.
-    (while (save-excursion
-	     (and (eq (following-char) ?,)
-		  (progn (forward-char 1) t)
-		  (progn (skip-chars-forward " \t") (eolp))
-		  comment-start-skip
-		  (save-match-data
-		    (forward-line 1)
-		    (and (looking-at comment-start-skip)
-			 (goto-char (match-end 0))))
-		  (looking-at-p copyright-years-regexp)))
-      (forward-line 1)
-      (re-search-forward comment-start-skip)
-      ;; (2) Need the extra \\( \\) so that the years are subexp 3, as
-      ;; they are at note (1) above.
-      (re-search-forward (format "\\(%s\\)" copyright-years-regexp)))
-
-    ;; Note that `current-time-string' isn't locale-sensitive.
-    (setq copyright-current-year (substring (current-time-string) -4))
-    (unless (string= (buffer-substring (- (match-end 3) 2) (match-end 3))
-		     (substring copyright-current-year -2))
-      (if (or noquery
-	      (save-window-excursion
-		(switch-to-buffer (current-buffer))
-		;; Fixes some point-moving oddness (bug#2209).
-		(save-excursion
-		  (y-or-n-p (if replace
-				(concat "Replace copyright year(s) by "
-					copyright-current-year "? ")
-			      (concat "Add " copyright-current-year
-				      " to copyright? "))))))
-	  (if replace
-	      (replace-match copyright-current-year t t nil 3)
-	    (let ((size (save-excursion (skip-chars-backward "0-9"))))
-	      (if (and (eq (% (- (string-to-number copyright-current-year)
-				 (string-to-number (buffer-substring
-						    (+ (point) size)
-						    (point))))
-			      100)
-			   1)
-		       (or (eq (char-after (+ (point) size -1)) ?-)
-			   (eq (char-after (+ (point) size -2)) ?-)))
-		  ;; This is a range so just replace the end part.
-		  (delete-char size)
-		;; Insert a comma with the preferred number of spaces.
-		(insert
-		 (save-excursion
-		   (if (re-search-backward "[0-9]\\( *, *\\)[0-9]"
-					   (line-beginning-position) t)
-		       (match-string 1)
-		     ", ")))
-		;; If people use the '91 '92 '93 scheme, do that as well.
-		(if (eq (char-after (+ (point) size -3)) ?')
-		    (insert ?')))
-	      ;; Finally insert the new year.
-	      (insert (substring copyright-current-year size))))))))
+  ;; This uses the match-data from copyright-find-copyright/end.
+  (goto-char (match-end 1))
+  (copyright-find-end)
+  ;; Note that `current-time-string' isn't locale-sensitive.
+  (setq copyright-current-year (substring (current-time-string) -4))
+  (unless (string= (buffer-substring (- (match-end 3) 2) (match-end 3))
+		   (substring copyright-current-year -2))
+    (if (or noquery
+	    (save-window-excursion
+	      (switch-to-buffer (current-buffer))
+	      ;; Fixes some point-moving oddness (bug#2209).
+	      (save-excursion
+		(y-or-n-p (if replace
+			      (concat "Replace copyright year(s) by "
+				      copyright-current-year "? ")
+			    (concat "Add " copyright-current-year
+				    " to copyright? "))))))
+	(if replace
+	    (replace-match copyright-current-year t t nil 3)
+	  (let ((size (save-excursion (skip-chars-backward "0-9"))))
+	    (if (and (eq (% (- (string-to-number copyright-current-year)
+			       (string-to-number (buffer-substring
+						  (+ (point) size)
+						  (point))))
+			    100)
+			 1)
+		     (or (eq (char-after (+ (point) size -1)) ?-)
+			 (eq (char-after (+ (point) size -2)) ?-)))
+		;; This is a range so just replace the end part.
+		(delete-char size)
+	      ;; Insert a comma with the preferred number of spaces.
+	      (insert
+	       (save-excursion
+		 (if (re-search-backward "[0-9]\\( *, *\\)[0-9]"
+					 (line-beginning-position) t)
+		     (match-string 1)
+		   ", ")))
+	      ;; If people use the '91 '92 '93 scheme, do that as well.
+	      (if (eq (char-after (+ (point) size -3)) ?')
+		  (insert ?')))
+	    ;; Finally insert the new year.
+	    (insert (substring copyright-current-year size)))))))
 
 ;;;###autoload
 (defun copyright-update (&optional arg interactivep)
@@ -208,76 +236,110 @@ interactively."
 		       (and (eq copyright-query 'function) interactivep))))
       (save-excursion
 	(save-restriction
-	  (widen)
-	  (goto-char (copyright-start-point))
-	  (copyright-update-year arg noquery)
-	  (goto-char (copyright-start-point))
-	  (and copyright-current-gpl-version
-	       ;; match the GPL version comment in .el files, including the
-	       ;; bilingual Esperanto one in two-column, and in texinfo.tex
-	       (copyright-re-search
-                "\\(the Free Software Foundation;\
- either \\|; a\\^u eldono \\([0-9]+\\)a, ? a\\^u (la\\^u via	 \\)\
-version \\([0-9]+\\), or (at"
-                (copyright-limit) t)
-               ;; Don't update if the file is already using a more recent
-               ;; version than the "current" one.
-               (< (string-to-number (match-string 3))
-                  (string-to-number copyright-current-gpl-version))
-	       (or noquery
-                   (save-match-data
-		     (save-window-excursion
-		       (switch-to-buffer (current-buffer))
-		       (y-or-n-p (format "Replace GPL version by %s? "
-					 copyright-current-gpl-version)))))
-	       (progn
-		 (if (match-end 2)
-		     ;; Esperanto bilingual comment in two-column.el
-		     (replace-match copyright-current-gpl-version t t nil 2))
-		 (replace-match copyright-current-gpl-version t t nil 3))))
+	  ;; If names-regexp doesn't match, we should not mess with
+	  ;; the years _or_ the GPL version.
+	  ;; TODO there may be multiple copyrights we should update.
+	  (when (copyright-find-copyright)
+	    (copyright-update-year arg noquery)
+	    (goto-char (copyright-start-point))
+	    (and copyright-current-gpl-version
+		 ;; Match the GPL version comment in .el files.
+		 ;; This is sensitive to line-breaks. :(
+		 (copyright-re-search
+		  "the Free Software Foundation[,;\n].*either version \
+\\([0-9]+\\)\\(?: of the License\\)?, or[ \n].*any later version"
+		  (copyright-limit) t)
+		 ;; Don't update if the file is already using a more recent
+		 ;; version than the "current" one.
+		 (< (string-to-number (match-string 1))
+		    (string-to-number copyright-current-gpl-version))
+		 (or noquery
+		     (save-match-data
+		       (goto-char (match-end 1))
+		       (save-window-excursion
+			 (switch-to-buffer (current-buffer))
+			 (y-or-n-p
+			  (format "Replace GPL version %s with version %s? "
+				  (match-string-no-properties 1)
+				  copyright-current-gpl-version)))))
+		 (replace-match copyright-current-gpl-version t t nil 1))))
 	(set (make-local-variable 'copyright-update) nil)))
     ;; If a write-file-hook returns non-nil, the file is presumed to be written.
     nil))
 
 
-;; FIXME should be within 50 years of present (cf calendar).
+;; FIXME heuristic should be within 50 years of present (cf calendar).
 ;;;###autoload
 (defun copyright-fix-years ()
   "Convert 2 digit years to 4 digit years.
-Uses heuristic: year >= 50 means 19xx, < 50 means 20xx."
+Uses heuristic: year >= 50 means 19xx, < 50 means 20xx.
+If `copyright-year-ranges' (which see) is non-nil, also
+independently replaces consecutive years with a range."
   (interactive)
-  (widen)
-  (goto-char (copyright-start-point))
-  (if (copyright-re-search copyright-regexp (copyright-limit) t)
-      (let ((s (match-beginning 2))
-	    (e (copy-marker (1+ (match-end 2))))
+  ;; TODO there may be multiple copyrights we should fix.
+  (if (copyright-find-copyright)
+      (let ((s (match-beginning 3))
 	    (p (make-marker))
-	    last)
+	    ;; Not line-beg-pos, so we don't mess up leading whitespace.
+	    (copystart (match-beginning 0))
+	    e last sep year prev-year first-year range-start range-end)
+	;; In case years are continued over multiple, commented lines.
+	(goto-char (match-end 1))
+	(copyright-find-end)
+	(setq e (copy-marker (1+ (match-end 3))))
 	(goto-char s)
 	(while (re-search-forward "[0-9]+" e t)
 	  (set-marker p (point))
 	  (goto-char (match-beginning 0))
-	  (let ((sep (char-before))
-		(year (string-to-number (match-string 0))))
-	    (when (and sep
-		       (/= (char-syntax sep) ?\s)
-		       (/= sep ?-))
-	      (insert " "))
-	    (when (< year 100)
-	      (insert (if (>= year 50) "19" "20"))))
+	  (setq year (string-to-number (match-string 0)))
+	  (and (setq sep (char-before))
+	       (/= (char-syntax sep) ?\s)
+	       (/= sep ?-)
+	       (insert " "))
+	  (when (< year 100)
+	    (insert (if (>= year 50) "19" "20"))
+	    (setq year (+ year (if (>= year 50) 1900 2000))))
 	  (goto-char p)
-	  (setq last p))
+	  (when copyright-year-ranges
+	    ;; If the previous thing was a range, don't try to tack more on.
+	    ;; Ie not 2000-2005 -> 2000-2005-2007
+	    ;; TODO should merge into existing range if possible.
+	    (if (eq sep ?-)
+		(setq prev-year nil
+		      year nil)
+	      (if (and prev-year (= year (1+ prev-year)))
+		  (setq range-end (point))
+		(when (and first-year prev-year
+			   (> prev-year first-year))
+		  (goto-char range-end)
+		  (delete-region range-start range-end)
+		  (insert (format "-%d" prev-year))
+		  (goto-char p))
+		(setq first-year year
+		      range-start (point)))))
+	  (setq prev-year year
+		last p))
 	(when last
+	  (when (and copyright-year-ranges
+		     first-year prev-year
+		     (> prev-year first-year))
+	    (goto-char range-end)
+	    (delete-region range-start range-end)
+	    (insert (format "-%d" prev-year)))
 	  (goto-char last)
 	  ;; Don't mess up whitespace after the years.
 	  (skip-chars-backward " \t")
-	  (save-restriction
-	    (narrow-to-region (copyright-start-point) (point))
-	    (let ((fill-prefix "     "))
-	      (fill-region s last))))
+	   (save-restriction
+	     (narrow-to-region copystart (point))
+	     ;; This is clearly wrong, eg what about comment markers?
+ ;;;	    (let ((fill-prefix "     "))
+	     ;; TODO do not break copyright owner over lines.
+	     (fill-region (point-min) (point-max))))
 	(set-marker e nil)
-	(set-marker p nil)
-	(copyright-update nil t))
+	(set-marker p nil))
+    ;; Simply reformatting the years is not copyrightable, so it does
+    ;; not seem right to call this.  Also it messes with ranges.
+;;;	(copyright-update nil t))
     (message "No copyright message")))
 
 ;;;###autoload
@@ -292,17 +354,24 @@ Uses heuristic: year >= 50 means 19xx, < 50 means 20xx."
        (message "Copyright extends beyond `copyright-limit' and won't be updated automatically."))
   comment-end \n)
 
+;; TODO: recurse, exclude COPYING etc.
 ;;;###autoload
-(defun copyright-update-directory (directory match)
-  "Update copyright notice for all files in DIRECTORY matching MATCH."
+(defun copyright-update-directory (directory match &optional fix)
+  "Update copyright notice for all files in DIRECTORY matching MATCH.
+If FIX is non-nil, run `copyright-fix-years' instead."
   (interactive "DDirectory: \nMFilenames matching (regexp): ")
   (dolist (file (directory-files directory t match nil))
-    (message "Updating file `%s'" file)
-    (find-file file)
-    (let ((copyright-query nil))
-      (copyright-update))
-    (save-buffer)
-    (kill-buffer (current-buffer))))
+    (unless (file-directory-p file)
+      (message "Updating file `%s'" file)
+      (find-file file)
+      (let ((inhibit-read-only t)
+	    (enable-local-variables :safe)
+	    copyright-query)
+	(if fix
+	    (copyright-fix-years)
+	  (copyright-update)))
+      (save-buffer)
+      (kill-buffer (current-buffer)))))
 
 (provide 'copyright)
 
@@ -311,5 +380,4 @@ Uses heuristic: year >= 50 means 19xx, < 50 means 20xx."
 ;; coding: utf-8
 ;; End:
 
-;; arch-tag: b4991afb-b6b1-4590-bebe-e076d9d4aee8
 ;;; copyright.el ends here
diff --git a/lisp/emacs-lisp/crm.el b/lisp/emacs-lisp/crm.el
index 722b901be14..3848ab7e6ea 100644
--- a/lisp/emacs-lisp/crm.el
+++ b/lisp/emacs-lisp/crm.el
@@ -1,7 +1,6 @@
 ;;; crm.el --- read multiple strings with completion
 
-;; Copyright (C) 1985, 1986, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
-;;   2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+;; Copyright (C) 1985-1986, 1993-2011 Free Software Foundation, Inc.
 
 ;; Author: Sen Nagata <sen@eccosys.com>
 ;; Keywords: completion, minibuffer, multiple elements
@@ -321,5 +320,4 @@ INHERIT-INPUT-METHOD."
 
 (provide 'crm)
 
-;; arch-tag: db1911d9-86c6-4a42-b32a-4910701b15a6
 ;;; crm.el ends here
diff --git a/lisp/emacs-lisp/cust-print.el b/lisp/emacs-lisp/cust-print.el
index ee1a57231c1..e7f9aae1c60 100644
--- a/lisp/emacs-lisp/cust-print.el
+++ b/lisp/emacs-lisp/cust-print.el
@@ -1,7 +1,6 @@
 ;;; cust-print.el --- handles print-level and print-circle
 
-;; Copyright (C) 1992, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
-;;   2009, 2010  Free Software Foundation, Inc.
+;; Copyright (C) 1992, 2001-2011  Free Software Foundation, Inc.
 
 ;; Author: Daniel LaLiberte <liberte@holonexus.org>
 ;; Adapted-By: ESR
@@ -681,5 +680,4 @@ See `custom-format' for the details."
 
 (provide 'cust-print)
 
-;; arch-tag: 3a5a8650-622c-48c4-87d8-e01bf72ec580
 ;;; cust-print.el ends here
diff --git a/lisp/emacs-lisp/debug.el b/lisp/emacs-lisp/debug.el
index 17fcf7ad6c5..88633eaaa46 100644
--- a/lisp/emacs-lisp/debug.el
+++ b/lisp/emacs-lisp/debug.el
@@ -1,7 +1,6 @@
 ;;; debug.el --- debuggers and related commands for Emacs
 
-;; Copyright (C) 1985, 1986, 1994, 2001, 2002, 2003, 2004,
-;;   2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+;; Copyright (C) 1985-1986, 1994, 2001-2011 Free Software Foundation, Inc.
 
 ;; Maintainer: FSF
 ;; Keywords: lisp, tools, maint
@@ -890,5 +889,4 @@ To specify a nil argument interactively, exit with an empty minibuffer."
 
 (provide 'debug)
 
-;; arch-tag: b6ec7047-f801-4103-9c63-d69322db9d3b
 ;;; debug.el ends here
diff --git a/lisp/emacs-lisp/derived.el b/lisp/emacs-lisp/derived.el
index 3456d1a63fb..425a77ee77f 100644
--- a/lisp/emacs-lisp/derived.el
+++ b/lisp/emacs-lisp/derived.el
@@ -1,8 +1,7 @@
 ;;; derived.el --- allow inheritance of major modes
 ;; (formerly mode-clone.el)
 
-;; Copyright (C) 1993, 1994, 1999, 2001, 2002, 2003, 2004, 2005, 2006,
-;;   2007, 2008, 2009, 2010  Free Software Foundation, Inc.
+;; Copyright (C) 1993-1994, 1999, 2001-2011  Free Software Foundation, Inc.
 
 ;; Author: David Megginson (dmeggins@aix1.uottawa.ca)
 ;; Maintainer: FSF
@@ -457,5 +456,4 @@ Where the new table already has an entry, nothing is copied from the old one."
 
 (provide 'derived)
 
-;; arch-tag: 630be248-47d1-4f02-afa0-8207de0ebea0
 ;;; derived.el ends here
diff --git a/lisp/emacs-lisp/disass.el b/lisp/emacs-lisp/disass.el
index 18aa5fde0c8..9ee02a98e5e 100644
--- a/lisp/emacs-lisp/disass.el
+++ b/lisp/emacs-lisp/disass.el
@@ -1,7 +1,6 @@
 ;;; disass.el --- disassembler for compiled Emacs Lisp code
 
-;; Copyright (C) 1986, 1991, 2002, 2003, 2004,
-;;   2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+;; Copyright (C) 1986, 1991, 2002-2011 Free Software Foundation, Inc.
 
 ;; Author: Doug Cutting <doug@csli.stanford.edu>
 ;;	Jamie Zawinski <jwz@lucid.com>
@@ -269,5 +268,4 @@ OBJ should be a call to BYTE-CODE generated by the byte compiler."
 
 (provide 'disass)
 
-;; arch-tag: 89482fe4-a087-4761-8dc6-d771054e763a
 ;;; disass.el ends here
diff --git a/lisp/emacs-lisp/easy-mmode.el b/lisp/emacs-lisp/easy-mmode.el
index 9a703c96378..46dc1f162ba 100644
--- a/lisp/emacs-lisp/easy-mmode.el
+++ b/lisp/emacs-lisp/easy-mmode.el
@@ -1,7 +1,6 @@
 ;;; easy-mmode.el --- easy definition for major and minor modes
 
-;; Copyright (C) 1997, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
-;;   2008, 2009, 2010  Free Software Foundation, Inc.
+;; Copyright (C) 1997, 2000-2011  Free Software Foundation, Inc.
 
 ;; Author: Georges Brun-Cottan <Georges.Brun-Cottan@inria.fr>
 ;; Maintainer: Stefan Monnier <monnier@gnu.org>
@@ -94,8 +93,9 @@ Optional INIT-VALUE is the initial value of the mode's variable.
 Optional LIGHTER is displayed in the modeline when the mode is on.
 Optional KEYMAP is the default keymap bound to the mode keymap.
   If non-nil, it should be a variable name (whose value is a keymap),
-  a keymap, or a list of arguments for `easy-mmode-define-keymap'.
-  If KEYMAP is a keymap or list, this also defines the variable MODE-map.
+  or an expression that returns either a keymap or a list of
+  arguments for `easy-mmode-define-keymap'.  If KEYMAP is not a symbol,
+  this also defines the variable MODE-map.
 
 BODY contains code to execute each time the mode is enabled or disabled.
   It is executed after toggling the mode, and before running MODE-hook.
@@ -274,7 +274,7 @@ With zero or negative ARG turn mode off.
 	     (let ((m ,keymap))
 	       (cond ((keymapp m) m)
 		     ((listp m) (easy-mmode-define-keymap m))
-		     (t (error "Invalid keymap %S" ,keymap))))
+		     (t (error "Invalid keymap %S" m))))
 	     ,(format "Keymap for `%s'." mode-name)))
 
        ,(if (not (symbolp mode))
diff --git a/lisp/emacs-lisp/easymenu.el b/lisp/emacs-lisp/easymenu.el
index 9992861fc3c..79573437146 100644
--- a/lisp/emacs-lisp/easymenu.el
+++ b/lisp/emacs-lisp/easymenu.el
@@ -1,7 +1,6 @@
 ;;; easymenu.el --- support the easymenu interface for defining a menu
 
-;; Copyright (C) 1994, 1996, 1998, 1999, 2000, 2001, 2002, 2003,
-;;   2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+;; Copyright (C) 1994, 1996, 1998-2011 Free Software Foundation, Inc.
 
 ;; Keywords: emulations
 ;; Author: Richard Stallman <rms@gnu.org>
@@ -30,6 +29,8 @@
 
 ;;; Code:
 
+(eval-when-compile (require 'cl))
+
 (defvar easy-menu-precalculate-equivalent-keybindings nil
   "Determine when equivalent key bindings are computed for easy-menu menus.
 It can take some time to calculate the equivalent key bindings that are shown
@@ -66,8 +67,8 @@ expression has a non-nil value.  `:included' is an alias for `:visible'.
 
    :active ENABLE
 
-ENABLE is an expression; the menu is enabled for selection
-whenever this expression's value is non-nil.
+ENABLE is an expression; the menu is enabled for selection whenever
+this expression's value is non-nil.  `:enable' is an alias for `:active'.
 
 The rest of the elements in MENU, are menu items.
 
@@ -104,8 +105,8 @@ keyboard equivalent.
 
    :active ENABLE
 
-ENABLE is an expression; the item is enabled for selection
-whenever this expression's value is non-nil.
+ENABLE is an expression; the item is enabled for selection whenever
+this expression's value is non-nil.  `:enable' is an alias for `:active'.
 
    :visible INCLUDE
 
@@ -163,10 +164,13 @@ This is expected to be bound to a mouse event."
                    (prog1 (get menu 'menu-prop)
                      (setq menu (symbol-function menu))))))
     (cons 'menu-item
-          (cons (or item-name
-                    (if (keymapp menu)
-                        (keymap-prompt menu))
-                    "")
+          (cons (if (eq :label (car props))
+                    (prog1 (cadr props)
+                      (setq props (cddr props)))
+                  (or item-name
+                      (if (keymapp menu)
+                          (keymap-prompt menu))
+                      ""))
                 (cons menu props)))))
 
 ;;;###autoload
@@ -232,15 +236,14 @@ possibly preceded by keyword pairs as described in `easy-menu-define'."
 		(keywordp (setq keyword (car menu-items))))
       (setq arg (cadr menu-items))
       (setq menu-items (cddr menu-items))
-      (cond
-       ((eq keyword :filter)
+      (case keyword
+       (:filter
 	(setq filter `(lambda (menu)
 			(easy-menu-filter-return (,arg menu) ,menu-name))))
-       ((eq keyword :active) (setq enable (or arg ''nil)))
-       ((eq keyword :label) (setq label arg))
-       ((eq keyword :help) (setq help arg))
-       ((or (eq keyword :included) (eq keyword :visible))
-	(setq visible (or arg ''nil)))))
+       ((:enable :active) (setq enable (or arg ''nil)))
+       (:label (setq label arg))
+       (:help (setq help arg))
+       ((:included :visible) (setq visible (or arg ''nil)))))
     (if (equal visible ''nil)
 	nil				; Invisible menu entry, return nil.
       (if (and visible (not (easy-menu-always-true-p visible)))
@@ -249,14 +252,14 @@ possibly preceded by keyword pairs as described in `easy-menu-define'."
 	  (setq prop (cons :enable (cons enable prop))))
       (if filter (setq prop (cons :filter (cons filter prop))))
       (if help (setq prop (cons :help (cons help prop))))
-      (if label (setq prop (cons nil (cons label prop))))
-      (if filter
-	  ;; The filter expects the menu in its XEmacs form and the pre-filter
-	  ;; form will only be passed to the filter anyway, so we'd better
-	  ;; not convert it at all (it will be converted on the fly by
-	  ;; easy-menu-filter-return).
-	  (setq menu menu-items)
-	(setq menu (append menu (mapcar 'easy-menu-convert-item menu-items))))
+      (if label (setq prop (cons :label (cons label prop))))
+      (setq menu (if filter
+                     ;; The filter expects the menu in its XEmacs form and the
+                     ;; pre-filter form will only be passed to the filter
+                     ;; anyway, so we'd better not convert it at all (it will
+                     ;; be converted on the fly by easy-menu-filter-return).
+                     menu-items
+                   (append menu (mapcar 'easy-menu-convert-item menu-items))))
       (when prop
 	(setq menu (easy-menu-make-symbol menu 'noexp))
 	(put menu 'menu-prop prop))
@@ -312,7 +315,7 @@ ITEM defines an item as in `easy-menu-define'."
 	  ;; Invisible menu item. Don't insert into keymap.
 	  (setq remove t)
 	(when (and (symbolp command) (setq prop (get command 'menu-prop)))
-	  (when (null (car prop))
+	  (when (eq :label (car prop))
 	    (setq label (cadr prop))
 	    (setq prop (cddr prop)))
 	  (setq command (symbol-function command)))))
@@ -331,30 +334,28 @@ ITEM defines an item as in `easy-menu-define'."
 		(setq keyword (aref item count))
 		(setq arg (aref item (1+ count)))
 		(setq count (+ 2 count))
-		(cond
-		 ((or (eq keyword :included) (eq keyword :visible))
-		  (setq visible (or arg ''nil)))
-		 ((eq keyword :key-sequence)
-		  (setq cache arg cache-specified t))
-		 ((eq keyword :keys) (setq keys arg no-name nil))
-		 ((eq keyword :label) (setq label arg))
-		 ((eq keyword :active) (setq active (or arg ''nil)))
-		 ((eq keyword :help) (setq prop (cons :help (cons arg prop))))
-		 ((eq keyword :suffix) (setq suffix arg))
-		 ((eq keyword :style) (setq style arg))
-		 ((eq keyword :selected) (setq selected (or arg ''nil)))))
+		(case keyword
+                  ((:included :visible) (setq visible (or arg ''nil)))
+                  (:key-sequence (setq cache arg cache-specified t))
+                  (:keys (setq keys arg no-name nil))
+                  (:label (setq label arg))
+                  ((:active :enable) (setq active (or arg ''nil)))
+                  (:help (setq prop (cons :help (cons arg prop))))
+                  (:suffix (setq suffix arg))
+                  (:style (setq style arg))
+                  (:selected (setq selected (or arg ''nil)))))
 	      (if suffix
 		  (setq label
 			(if (stringp suffix)
 			    (if (stringp label) (concat label " " suffix)
-			      (list 'concat label (concat " " suffix)))
+			      `(concat ,label ,(concat " " suffix)))
 			  (if (stringp label)
-			      (list 'concat (concat label " ") suffix)
-			    (list 'concat label " " suffix)))))
+			      `(concat ,(concat label " ") ,suffix)
+			    `(concat ,label " " ,suffix)))))
 	      (cond
 	       ((eq style 'button)
 		(setq label (if (stringp label) (concat "[" label "]")
-			      (list 'concat "[" label "]"))))
+			      `(concat "[" ,label "]"))))
 	       ((and selected
 		     (setq style (assq style easy-menu-button-prefix)))
 		(setq prop (cons :button
@@ -674,5 +675,4 @@ In some cases we use that to select between the local and global maps."
 
 (provide 'easymenu)
 
-;; arch-tag: 2a04020d-90d2-476d-a7c6-71e072007a4a
 ;;; easymenu.el ends here
diff --git a/lisp/emacs-lisp/edebug.el b/lisp/emacs-lisp/edebug.el
index 4dfccb4c5b4..7932309cff4 100644
--- a/lisp/emacs-lisp/edebug.el
+++ b/lisp/emacs-lisp/edebug.el
@@ -1,8 +1,6 @@
 ;;; edebug.el --- a source-level debugger for Emacs Lisp
 
-;; Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1997,
-;;   1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
-;;   2010  Free Software Foundation, Inc.
+;; Copyright (C) 1988-1995, 1997, 1999-2011  Free Software Foundation, Inc.
 
 ;; Author: Daniel LaLiberte <liberte@holonexus.org>
 ;; Maintainer: FSF
@@ -2131,8 +2129,6 @@ expressions; a `progn' form will be returned enclosing these forms."
 
 (def-edebug-spec with-custom-print body)
 
-(def-edebug-spec sregexq (&rest sexp))
-(def-edebug-spec rx (&rest sexp))
 
 ;;; The debugger itself
 
diff --git a/lisp/emacs-lisp/eieio-base.el b/lisp/emacs-lisp/eieio-base.el
index 91cb5642fb7..139f5e6a4ce 100644
--- a/lisp/emacs-lisp/eieio-base.el
+++ b/lisp/emacs-lisp/eieio-base.el
@@ -1,6 +1,6 @@
 ;;; eieio-base.el --- Base classes for EIEIO.
 
-;;; Copyright (C) 2000, 2001, 2002, 2004, 2005, 2007, 2008, 2009, 2010
+;;; Copyright (C) 2000-2002, 2004-2005, 2007-2011
 ;;; Free Software Foundation, Inc.
 
 ;; Author: Eric M. Ludlam  <zappo@gnu.org>
@@ -329,5 +329,4 @@ a set type."
 
 (provide 'eieio-base)
 
-;; arch-tag: 6260571e-9e8a-41a0-880f-a937b0c2ea8b
 ;;; eieio-base.el ends here
diff --git a/lisp/emacs-lisp/eieio-comp.el b/lisp/emacs-lisp/eieio-comp.el
index e07a7b20d14..ed6fb6f1c41 100644
--- a/lisp/emacs-lisp/eieio-comp.el
+++ b/lisp/emacs-lisp/eieio-comp.el
@@ -1,7 +1,7 @@
 ;;; eieio-comp.el -- eieio routines to help with byte compilation
 
-;; Copyright (C) 1995,1996, 1998, 1999, 2000, 2001, 2002, 2005, 2008,
-;;   2009, 2010  Free Software Foundation, Inc.
+;; Copyright (C) 1995-1996, 1998-2002, 2005, 2008-2011
+;;   Free Software Foundation, Inc.
 
 ;; Author: Eric M. Ludlam <zappo@gnu.org>
 ;; Version: 0.2
diff --git a/lisp/emacs-lisp/eieio-custom.el b/lisp/emacs-lisp/eieio-custom.el
index 12ff23b311f..6fe63fcb754 100644
--- a/lisp/emacs-lisp/eieio-custom.el
+++ b/lisp/emacs-lisp/eieio-custom.el
@@ -1,7 +1,6 @@
 ;;; eieio-custom.el -- eieio object customization
 
-;; Copyright (C) 1999, 2000, 2001, 2005, 2007, 2008, 2009, 2010
-;;   Free Software Foundation, Inc.
+;; Copyright (C) 1999-2001, 2005, 2007-2011  Free Software Foundation, Inc.
 
 ;; Author: Eric M. Ludlam <zappo@gnu.org>
 ;; Version: 0.2
@@ -461,5 +460,4 @@ Return the symbol for the group, or nil"
 
 (provide 'eieio-custom)
 
-;; arch-tag: bc122762-a771-48d5-891b-7835b16dd924
 ;;; eieio-custom.el ends here
diff --git a/lisp/emacs-lisp/eieio-datadebug.el b/lisp/emacs-lisp/eieio-datadebug.el
index b58fbfd3f08..60510e1816c 100644
--- a/lisp/emacs-lisp/eieio-datadebug.el
+++ b/lisp/emacs-lisp/eieio-datadebug.el
@@ -1,6 +1,6 @@
 ;;; eieio-datadebug.el --- EIEIO extensions to the data debugger.
 
-;; Copyright (C) 2007, 2008, 2009, 2010  Free Software Foundation, Inc.
+;; Copyright (C) 2007-2011  Free Software Foundation, Inc.
 
 ;; Author: Eric M. Ludlam <zappo@gnu.org>
 ;; Keywords: OO, lisp
@@ -145,5 +145,4 @@ PREBUTTONTEXT is some text between PREFIX and the object button."
 
 (provide 'eieio-datadebug)
 
-;; arch-tag: 6c7c2890-7614-41b0-816b-c61f3f6a8130
 ;;; eieio-datadebug.el ends here
diff --git a/lisp/emacs-lisp/eieio-opt.el b/lisp/emacs-lisp/eieio-opt.el
index ca3850562c8..ddc6616ba28 100644
--- a/lisp/emacs-lisp/eieio-opt.el
+++ b/lisp/emacs-lisp/eieio-opt.el
@@ -1,7 +1,7 @@
 ;;; eieio-opt.el -- eieio optional functions (debug, printing, speedbar)
 
-;; Copyright (C) 1996, 1998, 1999, 2000, 2001, 2002, 2003, 2005, 2008,
-;;   2009, 2010  Free Software Foundation, Inc.
+;; Copyright (C) 1996, 1998-2003, 2005, 2008-2011
+;;   Free Software Foundation, Inc.
 
 ;; Author: Eric M. Ludlam <zappo@gnu.org>
 ;; Version: 0.2
@@ -693,5 +693,4 @@ INDENT is the current indentation level."
 
 (provide 'eieio-opt)
 
-;; arch-tag: 71eab5f5-462f-4fa1-8ed1-f5ca1bf9adb6
 ;;; eieio-opt.el ends here
diff --git a/lisp/emacs-lisp/eieio-speedbar.el b/lisp/emacs-lisp/eieio-speedbar.el
index e16c3a17438..d28ecd9615b 100644
--- a/lisp/emacs-lisp/eieio-speedbar.el
+++ b/lisp/emacs-lisp/eieio-speedbar.el
@@ -1,7 +1,6 @@
 ;;; eieio-speedbar.el -- Classes for managing speedbar displays.
 
-;; Copyright (C) 1999, 2000, 2001, 2002, 2005, 2007, 2008, 2009, 2010
-;;   Free Software Foundation, Inc.
+;; Copyright (C) 1999-2002, 2005, 2007-2011  Free Software Foundation, Inc.
 
 ;; Author: Eric M. Ludlam <zappo@gnu.org>
 ;; Version: 0.2
@@ -422,5 +421,4 @@ to create a speedbar button."
 
 (provide 'eieio-speedbar)
 
-;; arch-tag: eaac1283-10b0-4419-a929-982b87e83234
 ;;; eieio-speedbar.el ends here
diff --git a/lisp/emacs-lisp/eieio.el b/lisp/emacs-lisp/eieio.el
index 048093b858d..d958bfbd45c 100644
--- a/lisp/emacs-lisp/eieio.el
+++ b/lisp/emacs-lisp/eieio.el
@@ -1,8 +1,7 @@
 ;;; eieio.el --- Enhanced Implementation of Emacs Interpreted Objects
 ;;;              or maybe Eric's Implementation of Emacs Intrepreted Objects
 
-;; Copyright (C) 1995, 1996, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
-;;   2005, 2006, 2007, 2008, 2009, 2010  Free Software Foundation, Inc.
+;; Copyright (C) 1995-1996, 1998-2011  Free Software Foundation, Inc.
 
 ;; Author: Eric M. Ludlam <zappo@gnu.org>
 ;; Version: 1.3
@@ -2956,5 +2955,4 @@ Optional argument NOESCAPE is passed to `prin1-to-string' when appropriate."
 
 (provide 'eieio)
 
-;; arch-tag: c1aeab9c-2938-41a3-842b-1a38bd26e9f2
 ;;; eieio ends here
diff --git a/lisp/emacs-lisp/eldoc.el b/lisp/emacs-lisp/eldoc.el
index b4845495c9e..cd9b779bee9 100644
--- a/lisp/emacs-lisp/eldoc.el
+++ b/lisp/emacs-lisp/eldoc.el
@@ -1,7 +1,6 @@
 ;;; eldoc.el --- show function arglist or variable docstring in echo area
 
-;; Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
-;;   2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+;; Copyright (C) 1996-2011 Free Software Foundation, Inc.
 
 ;; Author: Noah Friedman <friedman@splode.com>
 ;; Maintainer: friedman@splode.com
@@ -540,5 +539,4 @@ The words \"&rest\", \"&optional\" are returned unchanged."
 
 (provide 'eldoc)
 
-;; arch-tag: c9a58f9d-2055-46c1-9b82-7248b71a8375
 ;;; eldoc.el ends here
diff --git a/lisp/emacs-lisp/elint.el b/lisp/emacs-lisp/elint.el
index 39c45e82309..36c26676fe9 100644
--- a/lisp/emacs-lisp/elint.el
+++ b/lisp/emacs-lisp/elint.el
@@ -1,7 +1,6 @@
 ;;; elint.el --- Lint Emacs Lisp
 
-;; Copyright (C) 1997, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
-;;   2009, 2010  Free Software Foundation, Inc.
+;; Copyright (C) 1997, 2001-2011  Free Software Foundation, Inc.
 
 ;; Author: Peter Liljenberg <petli@lysator.liu.se>
 ;; Created: May 1997
diff --git a/lisp/emacs-lisp/elp.el b/lisp/emacs-lisp/elp.el
index f1e70c5a57c..910eff3c78f 100644
--- a/lisp/emacs-lisp/elp.el
+++ b/lisp/emacs-lisp/elp.el
@@ -1,7 +1,7 @@
 ;;; elp.el --- Emacs Lisp Profiler
 
-;; Copyright (C) 1994, 1995, 1997, 1998, 2001, 2002, 2003, 2004,
-;;   2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+;; Copyright (C) 1994-1995, 1997-1998, 2001-2011
+;;   Free Software Foundation, Inc.
 
 ;; Author: Barry A. Warsaw
 ;; Maintainer: FSF
@@ -660,5 +660,4 @@ displayed."
 
 (provide 'elp)
 
-;; arch-tag: c4eef311-9b3e-4bb2-8a54-3485d41b4eb1
 ;;; elp.el ends here
diff --git a/lisp/emacs-lisp/ert-x.el b/lisp/emacs-lisp/ert-x.el
new file mode 100644
index 00000000000..39d4a4e814a
--- /dev/null
+++ b/lisp/emacs-lisp/ert-x.el
@@ -0,0 +1,290 @@
+;;; ert-x.el --- Staging area for experimental extensions to ERT
+
+;; Copyright (C) 2008, 2010-2011 Free Software Foundation, Inc.
+
+;; Author: Lennart Borgman (lennart O borgman A gmail O com)
+;; Author: Christian Ohler <ohler@gnu.org>
+
+;; This file is part of GNU Emacs.
+
+;; This program 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.
+;;
+;; This program 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 this program.  If not, see `http://www.gnu.org/licenses/'.
+
+;;; Commentary:
+
+;; This file includes some extra helper functions to use while writing
+;; automated tests with ERT.  These have been proposed as extensions
+;; to ERT but are not mature yet and likely to change.
+
+;;; Code:
+
+(eval-when-compile
+  (require 'cl))
+(require 'ert)
+
+
+;;; Test buffers.
+
+(defun ert--text-button (string &rest properties)
+  "Return a string containing STRING as a text button with PROPERTIES.
+
+See `make-text-button'."
+  (with-temp-buffer
+    (insert string)
+    (apply #'make-text-button (point-min) (point-max) properties)
+    (buffer-string)))
+
+(defun ert--format-test-buffer-name (base-name)
+  "Compute a test buffer name based on BASE-NAME.
+
+Helper function for `ert--test-buffers'."
+  (format "*Test buffer (%s)%s*"
+	  (or (and (ert-running-test)
+		   (ert-test-name (ert-running-test)))
+	      "<anonymous test>")
+	  (if base-name
+	      (format ": %s" base-name)
+	    "")))
+
+(defvar ert--test-buffers (make-hash-table :weakness t)
+  "Table of all test buffers.  Keys are the buffer objects, values are t.
+
+The main use of this table is for `ert-kill-all-test-buffers'.
+Not all buffers in this table are necessarily live, but all live
+test buffers are in this table.")
+
+(define-button-type 'ert--test-buffer-button
+  'action #'ert--test-buffer-button-action
+  'help-echo "mouse-2, RET: Pop to test buffer")
+
+(defun ert--test-buffer-button-action (button)
+  "Pop to the test buffer that BUTTON is associated with."
+  (pop-to-buffer (button-get button 'ert--test-buffer)))
+
+(defun ert--call-with-test-buffer (ert--base-name ert--thunk)
+  "Helper function for `ert-with-test-buffer'.
+
+Create a test buffer with a name based on ERT--BASE-NAME and run
+ERT--THUNK with that buffer as current."
+  (let* ((ert--buffer (generate-new-buffer
+                       (ert--format-test-buffer-name ert--base-name)))
+         (ert--button (ert--text-button (buffer-name ert--buffer)
+                                        :type 'ert--test-buffer-button
+                                        'ert--test-buffer ert--buffer)))
+    (puthash ert--buffer 't ert--test-buffers)
+    ;; We don't use `unwind-protect' here since we want to kill the
+    ;; buffer only on success.
+    (prog1 (with-current-buffer ert--buffer
+             (ert-info (ert--button :prefix "Buffer: ")
+               (funcall ert--thunk)))
+      (kill-buffer ert--buffer)
+      (remhash ert--buffer ert--test-buffers))))
+
+(defmacro* ert-with-test-buffer ((&key ((:name name-form)))
+				 &body body)
+  "Create a test buffer and run BODY in that buffer.
+
+To be used in ERT tests.  If BODY finishes successfully, the test
+buffer is killed; if there is an error, the test buffer is kept
+around on error for further inspection.  Its name is derived from
+the name of the test and the result of NAME-FORM."
+  (declare (debug ((form) body))
+           (indent 1))
+  `(ert--call-with-test-buffer ,name-form (lambda () ,@body)))
+
+;; We use these `put' forms in addition to the (declare (indent)) in
+;; the defmacro form since the `declare' alone does not lead to
+;; correct indentation before the .el/.elc file is loaded.
+;; Autoloading these `put' forms solves this.
+;;;###autoload
+(progn
+  ;; TODO(ohler): Figure out what these mean and make sure they are correct.
+  (put 'ert-with-test-buffer 'lisp-indent-function 1))
+
+;;;###autoload
+(defun ert-kill-all-test-buffers ()
+  "Kill all test buffers that are still live."
+  (interactive)
+  (let ((count 0))
+    (maphash (lambda (buffer dummy)
+	       (when (or (not (buffer-live-p buffer))
+			 (kill-buffer buffer))
+		 (incf count)))
+	     ert--test-buffers)
+    (message "%s out of %s test buffers killed"
+	     count (hash-table-count ert--test-buffers)))
+  ;; It could be that some test buffers were actually kept alive
+  ;; (e.g., due to `kill-buffer-query-functions').  I'm not sure what
+  ;; to do about this.  For now, let's just forget them.
+  (clrhash ert--test-buffers)
+  nil)
+
+
+;;; Simulate commands.
+
+(defun ert-simulate-command (command)
+  ;; FIXME: add unread-events
+  "Simulate calling COMMAND the way the Emacs command loop would call it.
+
+This effectively executes
+
+  \(apply (car COMMAND) (cdr COMMAND)\)
+
+and returns the same value, but additionally runs hooks like
+`pre-command-hook' and `post-command-hook', and sets variables
+like `this-command' and `last-command'.
+
+COMMAND should be a list where the car is the command symbol and
+the rest are arguments to the command.
+
+NOTE: Since the command is not called by `call-interactively'
+test for `called-interactively' in the command will fail."
+  (assert (listp command) t)
+  (assert (commandp (car command)) t)
+  (assert (not unread-command-events) t)
+  (let (return-value)
+    ;; For the order of things here see command_loop_1 in keyboard.c.
+    ;;
+    ;; The command loop will reset the command-related variables so
+    ;; there is no reason to let-bind them. They are set here,
+    ;; however, to be able to test several commands in a row and how
+    ;; they affect each other.
+    (setq deactivate-mark nil
+          this-original-command (car command)
+          ;; remap through active keymaps
+          this-command (or (command-remapping this-original-command)
+                           this-original-command))
+    (run-hooks 'pre-command-hook)
+    (setq return-value (apply (car command) (cdr command)))
+    (run-hooks 'post-command-hook)
+    (when deferred-action-list
+      (run-hooks 'deferred-action-function))
+    (setq real-last-command (car command)
+          last-command this-command)
+    (when (boundp 'last-repeatable-command)
+      (setq last-repeatable-command real-last-command))
+    (when (and deactivate-mark transient-mark-mode) (deactivate-mark))
+    (assert (not unread-command-events) t)
+    return-value))
+
+(defun ert-run-idle-timers ()
+  "Run all idle timers (from `timer-idle-list')."
+  (dolist (timer (copy-sequence timer-idle-list))
+    (timer-event-handler timer)))
+
+
+;;; Miscellaneous utilities.
+
+(defun ert-filter-string (s &rest regexps)
+  "Return a copy of S with all matches of REGEXPS removed.
+
+Elements of REGEXPS may also be two-element lists \(REGEXP
+SUBEXP\), where SUBEXP is the number of a subexpression in
+REGEXP.  In that case, only that subexpression will be removed
+rather than the entire match."
+  ;; Use a temporary buffer since replace-match copies strings, which
+  ;; would lead to N^2 runtime.
+  (with-temp-buffer
+    (insert s)
+    (dolist (x regexps)
+      (destructuring-bind (regexp subexp) (if (listp x) x `(,x nil))
+        (goto-char (point-min))
+        (while (re-search-forward regexp nil t)
+          (replace-match "" t t nil subexp))))
+    (buffer-string)))
+
+
+(defun ert-propertized-string (&rest args)
+  "Return a string with properties as specified by ARGS.
+
+ARGS is a list of strings and plists.  The strings in ARGS are
+concatenated to produce an output string.  In the output string,
+each string from ARGS will be have the preceding plist as its
+property list, or no properties if there is no plist before it.
+
+As a simple example,
+
+\(ert-propertized-string \"foo \" '(face italic) \"bar\" \" baz\" nil \
+\" quux\"\)
+
+would return the string \"foo bar baz quux\" where the substring
+\"bar baz\" has a `face' property with the value `italic'.
+
+None of the ARGS are modified, but the return value may share
+structure with the plists in ARGS."
+  (with-temp-buffer
+    (loop with current-plist = nil
+          for x in args do
+          (etypecase x
+            (string (let ((begin (point)))
+                      (insert x)
+                      (set-text-properties begin (point) current-plist)))
+            (list (unless (zerop (mod (length x) 2))
+                    (error "Odd number of args in plist: %S" x))
+                  (setq current-plist x))))
+    (buffer-string)))
+
+
+(defun ert-call-with-buffer-renamed (buffer-name thunk)
+  "Protect the buffer named BUFFER-NAME from side-effects and run THUNK.
+
+Renames the buffer BUFFER-NAME to a new temporary name, creates a
+new buffer named BUFFER-NAME, executes THUNK, kills the new
+buffer, and renames the original buffer back to BUFFER-NAME.
+
+This is useful if THUNK has undesirable side-effects on an Emacs
+buffer with a fixed name such as *Messages*."
+  (lexical-let ((new-buffer-name (generate-new-buffer-name
+                                  (format "%s orig buffer" buffer-name))))
+    (with-current-buffer (get-buffer-create buffer-name)
+      (rename-buffer new-buffer-name))
+    (unwind-protect
+        (progn
+          (get-buffer-create buffer-name)
+          (funcall thunk))
+      (when (get-buffer buffer-name)
+        (kill-buffer buffer-name))
+      (with-current-buffer new-buffer-name
+        (rename-buffer buffer-name)))))
+
+(defmacro* ert-with-buffer-renamed ((buffer-name-form) &body body)
+  "Protect the buffer named BUFFER-NAME from side-effects and run BODY.
+
+See `ert-call-with-buffer-renamed' for details."
+  (declare (indent 1))
+  `(ert-call-with-buffer-renamed ,buffer-name-form (lambda () ,@body)))
+
+
+(defun ert-buffer-string-reindented (&optional buffer)
+  "Return the contents of BUFFER after reindentation.
+
+BUFFER defaults to current buffer.  Does not modify BUFFER."
+  (with-current-buffer (or buffer (current-buffer))
+    (let ((clone nil))
+      (unwind-protect
+          (progn
+            ;; `clone-buffer' doesn't work if `buffer-file-name' is non-nil.
+            (let ((buffer-file-name nil))
+              (setq clone (clone-buffer)))
+            (with-current-buffer clone
+              (let ((inhibit-read-only t))
+                (indent-region (point-min) (point-max)))
+              (buffer-string)))
+        (when clone
+          (let ((kill-buffer-query-functions nil))
+            (kill-buffer clone)))))))
+
+
+(provide 'ert-x)
+
+;;; ert-x.el ends here
diff --git a/lisp/emacs-lisp/ert.el b/lisp/emacs-lisp/ert.el
new file mode 100644
index 00000000000..7ee81463236
--- /dev/null
+++ b/lisp/emacs-lisp/ert.el
@@ -0,0 +1,2544 @@
+;;; ert.el --- Emacs Lisp Regression Testing
+
+;; Copyright (C) 2007-2008, 2010-2011 Free Software Foundation, Inc.
+
+;; Author: Christian Ohler <ohler@gnu.org>
+;; Keywords: lisp, tools
+
+;; This file is part of GNU Emacs.
+
+;; This program 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.
+;;
+;; This program 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 this program.  If not, see `http://www.gnu.org/licenses/'.
+
+;;; Commentary:
+
+;; ERT is a tool for automated testing in Emacs Lisp.  Its main
+;; features are facilities for defining and running test cases and
+;; reporting the results as well as for debugging test failures
+;; interactively.
+;;
+;; The main entry points are `ert-deftest', which is similar to
+;; `defun' but defines a test, and `ert-run-tests-interactively',
+;; which runs tests and offers an interactive interface for inspecting
+;; results and debugging.  There is also
+;; `ert-run-tests-batch-and-exit' for non-interactive use.
+;;
+;; The body of `ert-deftest' forms resembles a function body, but the
+;; additional operators `should', `should-not' and `should-error' are
+;; available.  `should' is similar to cl's `assert', but signals a
+;; different error when its condition is violated that is caught and
+;; processed by ERT.  In addition, it analyzes its argument form and
+;; records information that helps debugging (`assert' tries to do
+;; something similar when its second argument SHOW-ARGS is true, but
+;; `should' is more sophisticated).  For information on `should-not'
+;; and `should-error', see their docstrings.
+;;
+;; See ERT's info manual as well as the docstrings for more details.
+;; To compile the manual, run `makeinfo ert.texinfo' in the ERT
+;; directory, then C-u M-x info ert.info in Emacs to view it.
+;;
+;; To see some examples of tests written in ERT, see its self-tests in
+;; ert-tests.el.  Some of these are tricky due to the bootstrapping
+;; problem of writing tests for a testing tool, others test simple
+;; functions and are straightforward.
+
+;;; Code:
+
+(eval-when-compile
+  (require 'cl))
+(require 'button)
+(require 'debug)
+(require 'easymenu)
+(require 'ewoc)
+(require 'find-func)
+(require 'help)
+
+
+;;; UI customization options.
+
+(defgroup ert ()
+  "ERT, the Emacs Lisp regression testing tool."
+  :prefix "ert-"
+  :group 'lisp)
+
+(defface ert-test-result-expected '((((class color) (background light))
+                                     :background "green1")
+                                    (((class color) (background dark))
+                                     :background "green3"))
+  "Face used for expected results in the ERT results buffer."
+  :group 'ert)
+
+(defface ert-test-result-unexpected '((((class color) (background light))
+                                       :background "red1")
+                                      (((class color) (background dark))
+                                       :background "red3"))
+  "Face used for unexpected results in the ERT results buffer."
+  :group 'ert)
+
+
+;;; Copies/reimplementations of cl functions.
+
+(defun ert--cl-do-remf (plist tag)
+  "Copy of `cl-do-remf'.  Modify PLIST by removing TAG."
+  (let ((p (cdr plist)))
+    (while (and (cdr p) (not (eq (car (cdr p)) tag))) (setq p (cdr (cdr p))))
+    (and (cdr p) (progn (setcdr p (cdr (cdr (cdr p)))) t))))
+
+(defun ert--remprop (sym tag)
+  "Copy of `cl-remprop'.  Modify SYM's plist by removing TAG."
+  (let ((plist (symbol-plist sym)))
+    (if (and plist (eq tag (car plist)))
+	(progn (setplist sym (cdr (cdr plist))) t)
+      (ert--cl-do-remf plist tag))))
+
+(defun ert--remove-if-not (ert-pred ert-list)
+  "A reimplementation of `remove-if-not'.
+
+ERT-PRED is a predicate, ERT-LIST is the input list."
+  (loop for ert-x in ert-list
+        if (funcall ert-pred ert-x)
+        collect ert-x))
+
+(defun ert--intersection (a b)
+  "A reimplementation of `intersection'.  Intersect the sets A and B.
+
+Elements are compared using `eql'."
+  (loop for x in a
+        if (memql x b)
+        collect x))
+
+(defun ert--set-difference (a b)
+  "A reimplementation of `set-difference'.  Subtract the set B from the set A.
+
+Elements are compared using `eql'."
+  (loop for x in a
+        unless (memql x b)
+        collect x))
+
+(defun ert--set-difference-eq (a b)
+  "A reimplementation of `set-difference'.  Subtract the set B from the set A.
+
+Elements are compared using `eq'."
+  (loop for x in a
+        unless (memq x b)
+        collect x))
+
+(defun ert--union (a b)
+  "A reimplementation of `union'.  Compute the union of the sets A and B.
+
+Elements are compared using `eql'."
+  (append a (ert--set-difference b a)))
+
+(eval-and-compile
+  (defvar ert--gensym-counter 0))
+
+(eval-and-compile
+  (defun ert--gensym (&optional prefix)
+    "Only allows string PREFIX, not compatible with CL."
+    (unless prefix (setq prefix "G"))
+    (make-symbol (format "%s%s"
+                         prefix
+                         (prog1 ert--gensym-counter
+                           (incf ert--gensym-counter))))))
+
+(defun ert--coerce-to-vector (x)
+  "Coerce X to a vector."
+  (when (char-table-p x) (error "Not supported"))
+  (if (vectorp x)
+      x
+    (vconcat x)))
+
+(defun* ert--remove* (x list &key key test)
+  "Does not support all the keywords of remove*."
+  (unless key (setq key #'identity))
+  (unless test (setq test #'eql))
+  (loop for y in list
+        unless (funcall test x (funcall key y))
+        collect y))
+
+(defun ert--string-position (c s)
+  "Return the position of the first occurrence of C in S, or nil if none."
+  (loop for i from 0
+        for x across s
+        when (eql x c) return i))
+
+(defun ert--mismatch (a b)
+  "Return index of first element that differs between A and B.
+
+Like `mismatch'.  Uses `equal' for comparison."
+  (cond ((or (listp a) (listp b))
+         (ert--mismatch (ert--coerce-to-vector a)
+                        (ert--coerce-to-vector b)))
+        ((> (length a) (length b))
+         (ert--mismatch b a))
+        (t
+         (let ((la (length a))
+               (lb (length b)))
+           (assert (arrayp a) t)
+           (assert (arrayp b) t)
+           (assert (<= la lb) t)
+           (loop for i below la
+                 when (not (equal (aref a i) (aref b i))) return i
+                 finally (return (if (/= la lb)
+                                     la
+                                   (assert (equal a b) t)
+                                   nil)))))))
+
+(defun ert--subseq (seq start &optional end)
+  "Return a subsequence of SEQ from START to END."
+  (when (char-table-p seq) (error "Not supported"))
+  (let ((vector (substring (ert--coerce-to-vector seq) start end)))
+    (etypecase seq
+      (vector vector)
+      (string (concat vector))
+      (list (append vector nil))
+      (bool-vector (loop with result = (make-bool-vector (length vector) nil)
+                         for i below (length vector) do
+                         (setf (aref result i) (aref vector i))
+                         finally (return result)))
+      (char-table (assert nil)))))
+
+(defun ert-equal-including-properties (a b)
+  "Return t if A and B have similar structure and contents.
+
+This is like `equal-including-properties' except that it compares
+the property values of text properties structurally (by
+recursing) rather than with `eq'.  Perhaps this is what
+`equal-including-properties' should do in the first place; see
+Emacs bug 6581 at URL `http://debbugs.gnu.org/cgi/bugreport.cgi?bug=6581'."
+  ;; This implementation is inefficient.  Rather than making it
+  ;; efficient, let's hope bug 6581 gets fixed so that we can delete
+  ;; it altogether.
+  (not (ert--explain-not-equal-including-properties a b)))
+
+
+;;; Defining and locating tests.
+
+;; The data structure that represents a test case.
+(defstruct ert-test
+  (name nil)
+  (documentation nil)
+  (body (assert nil))
+  (most-recent-result nil)
+  (expected-result-type ':passed)
+  (tags '()))
+
+(defun ert-test-boundp (symbol)
+  "Return non-nil if SYMBOL names a test."
+  (and (get symbol 'ert--test) t))
+
+(defun ert-get-test (symbol)
+  "If SYMBOL names a test, return that.  Signal an error otherwise."
+  (unless (ert-test-boundp symbol) (error "No test named `%S'" symbol))
+  (get symbol 'ert--test))
+
+(defun ert-set-test (symbol definition)
+  "Make SYMBOL name the test DEFINITION, and return DEFINITION."
+  (when (eq symbol 'nil)
+    ;; We disallow nil since `ert-test-at-point' and related functions
+    ;; want to return a test name, but also need an out-of-band value
+    ;; on failure.  Nil is the most natural out-of-band value; using 0
+    ;; or "" or signalling an error would be too awkward.
+    ;;
+    ;; Note that nil is still a valid value for the `name' slot in
+    ;; ert-test objects.  It designates an anonymous test.
+    (error "Attempt to define a test named nil"))
+  (put symbol 'ert--test definition)
+  definition)
+
+(defun ert-make-test-unbound (symbol)
+  "Make SYMBOL name no test.  Return SYMBOL."
+  (ert--remprop symbol 'ert--test)
+  symbol)
+
+(defun ert--parse-keys-and-body (keys-and-body)
+  "Split KEYS-AND-BODY into keyword-and-value pairs and the remaining body.
+
+KEYS-AND-BODY should have the form of a property list, with the
+exception that only keywords are permitted as keys and that the
+tail -- the body -- is a list of forms that does not start with a
+keyword.
+
+Returns a two-element list containing the keys-and-values plist
+and the body."
+  (let ((extracted-key-accu '())
+        (remaining keys-and-body))
+    (while (and (consp remaining) (keywordp (first remaining)))
+      (let ((keyword (pop remaining)))
+        (unless (consp remaining)
+          (error "Value expected after keyword %S in %S"
+                 keyword keys-and-body))
+        (when (assoc keyword extracted-key-accu)
+          (warn "Keyword %S appears more than once in %S" keyword
+                keys-and-body))
+        (push (cons keyword (pop remaining)) extracted-key-accu)))
+    (setq extracted-key-accu (nreverse extracted-key-accu))
+    (list (loop for (key . value) in extracted-key-accu
+                collect key
+                collect value)
+          remaining)))
+
+;;;###autoload
+(defmacro* ert-deftest (name () &body docstring-keys-and-body)
+  "Define NAME (a symbol) as a test.
+
+BODY is evaluated as a `progn' when the test is run.  It should
+signal a condition on failure or just return if the test passes.
+
+`should', `should-not' and `should-error' are useful for
+assertions in BODY.
+
+Use `ert' to run tests interactively.
+
+Tests that are expected to fail can be marked as such
+using :expected-result.  See `ert-test-result-type-p' for a
+description of valid values for RESULT-TYPE.
+
+\(fn NAME () [DOCSTRING] [:expected-result RESULT-TYPE] \
+\[:tags '(TAG...)] BODY...)"
+  (declare (debug (&define :name test
+                           name sexp [&optional stringp]
+			   [&rest keywordp sexp] def-body))
+           (doc-string 3)
+           (indent 2))
+  (let ((documentation nil)
+        (documentation-supplied-p nil))
+    (when (stringp (first docstring-keys-and-body))
+      (setq documentation (pop docstring-keys-and-body)
+            documentation-supplied-p t))
+    (destructuring-bind ((&key (expected-result nil expected-result-supplied-p)
+                               (tags nil tags-supplied-p))
+                         body)
+        (ert--parse-keys-and-body docstring-keys-and-body)
+      `(progn
+         (ert-set-test ',name
+                       (make-ert-test
+                        :name ',name
+                        ,@(when documentation-supplied-p
+                            `(:documentation ,documentation))
+                        ,@(when expected-result-supplied-p
+                            `(:expected-result-type ,expected-result))
+                        ,@(when tags-supplied-p
+                            `(:tags ,tags))
+                        :body (lambda () ,@body)))
+         ;; This hack allows `symbol-file' to associate `ert-deftest'
+         ;; forms with files, and therefore enables `find-function' to
+         ;; work with tests.  However, it leads to warnings in
+         ;; `unload-feature', which doesn't know how to undefine tests
+         ;; and has no mechanism for extension.
+         (push '(ert-deftest . ,name) current-load-list)
+         ',name))))
+
+;; We use these `put' forms in addition to the (declare (indent)) in
+;; the defmacro form since the `declare' alone does not lead to
+;; correct indentation before the .el/.elc file is loaded.
+;; Autoloading these `put' forms solves this.
+;;;###autoload
+(progn
+  ;; TODO(ohler): Figure out what these mean and make sure they are correct.
+  (put 'ert-deftest 'lisp-indent-function 2)
+  (put 'ert-info 'lisp-indent-function 1))
+
+(defvar ert--find-test-regexp
+  (concat "^\\s-*(ert-deftest"
+          find-function-space-re
+          "%s\\(\\s-\\|$\\)")
+  "The regexp the `find-function' mechanisms use for finding test definitions.")
+
+
+(put 'ert-test-failed 'error-conditions '(error ert-test-failed))
+(put 'ert-test-failed 'error-message "Test failed")
+
+(defun ert-pass ()
+  "Terminate the current test and mark it passed.  Does not return."
+  (throw 'ert--pass nil))
+
+(defun ert-fail (data)
+  "Terminate the current test and mark it failed.  Does not return.
+DATA is displayed to the user and should state the reason of the failure."
+  (signal 'ert-test-failed (list data)))
+
+
+;;; The `should' macros.
+
+(defvar ert--should-execution-observer nil)
+
+(defun ert--signal-should-execution (form-description)
+  "Tell the current `should' form observer (if any) about FORM-DESCRIPTION."
+  (when ert--should-execution-observer
+    (funcall ert--should-execution-observer form-description)))
+
+(defun ert--special-operator-p (thing)
+  "Return non-nil if THING is a symbol naming a special operator."
+  (and (symbolp thing)
+       (let ((definition (indirect-function thing t)))
+         (and (subrp definition)
+              (eql (cdr (subr-arity definition)) 'unevalled)))))
+
+(defun ert--expand-should-1 (whole form inner-expander)
+  "Helper function for the `should' macro and its variants."
+  (let ((form
+         ;; If `cl-macroexpand' isn't bound, the code that we're
+         ;; compiling doesn't depend on cl and thus doesn't need an
+         ;; environment arg for `macroexpand'.
+         (if (fboundp 'cl-macroexpand)
+             ;; Suppress warning about run-time call to cl funtion: we
+             ;; only call it if it's fboundp.
+             (with-no-warnings
+               (cl-macroexpand form (and (boundp 'cl-macro-environment)
+                                         cl-macro-environment)))
+           (macroexpand form))))
+    (cond
+     ((or (atom form) (ert--special-operator-p (car form)))
+      (let ((value (ert--gensym "value-")))
+        `(let ((,value (ert--gensym "ert-form-evaluation-aborted-")))
+           ,(funcall inner-expander
+                     `(setq ,value ,form)
+                     `(list ',whole :form ',form :value ,value)
+                     value)
+           ,value)))
+     (t
+      (let ((fn-name (car form))
+            (arg-forms (cdr form)))
+        (assert (or (symbolp fn-name)
+                    (and (consp fn-name)
+                         (eql (car fn-name) 'lambda)
+                         (listp (cdr fn-name)))))
+        (let ((fn (ert--gensym "fn-"))
+              (args (ert--gensym "args-"))
+              (value (ert--gensym "value-"))
+              (default-value (ert--gensym "ert-form-evaluation-aborted-")))
+          `(let ((,fn (function ,fn-name))
+                 (,args (list ,@arg-forms)))
+             (let ((,value ',default-value))
+               ,(funcall inner-expander
+                         `(setq ,value (apply ,fn ,args))
+                         `(nconc (list ',whole)
+                                 (list :form `(,,fn ,@,args))
+                                 (unless (eql ,value ',default-value)
+                                   (list :value ,value))
+                                 (let ((-explainer-
+                                        (and (symbolp ',fn-name)
+                                             (get ',fn-name 'ert-explainer))))
+                                   (when -explainer-
+                                     (list :explanation
+                                           (apply -explainer- ,args)))))
+                         value)
+               ,value))))))))
+
+(defun ert--expand-should (whole form inner-expander)
+  "Helper function for the `should' macro and its variants.
+
+Analyzes FORM and returns an expression that has the same
+semantics under evaluation but records additional debugging
+information.
+
+INNER-EXPANDER should be a function and is called with two
+arguments: INNER-FORM and FORM-DESCRIPTION-FORM, where INNER-FORM
+is an expression equivalent to FORM, and FORM-DESCRIPTION-FORM is
+an expression that returns a description of FORM.  INNER-EXPANDER
+should return code that calls INNER-FORM and performs the checks
+and error signalling specific to the particular variant of
+`should'.  The code that INNER-EXPANDER returns must not call
+FORM-DESCRIPTION-FORM before it has called INNER-FORM."
+  (lexical-let ((inner-expander inner-expander))
+    (ert--expand-should-1
+     whole form
+     (lambda (inner-form form-description-form value-var)
+       (let ((form-description (ert--gensym "form-description-")))
+         `(let (,form-description)
+            ,(funcall inner-expander
+                      `(unwind-protect
+                           ,inner-form
+                         (setq ,form-description ,form-description-form)
+                         (ert--signal-should-execution ,form-description))
+                      `,form-description
+                      value-var)))))))
+
+(defmacro* should (form)
+  "Evaluate FORM.  If it returns nil, abort the current test as failed.
+
+Returns the value of FORM."
+  (ert--expand-should `(should ,form) form
+                      (lambda (inner-form form-description-form value-var)
+                        `(unless ,inner-form
+                           (ert-fail ,form-description-form)))))
+
+(defmacro* should-not (form)
+  "Evaluate FORM.  If it returns non-nil, abort the current test as failed.
+
+Returns nil."
+  (ert--expand-should `(should-not ,form) form
+                      (lambda (inner-form form-description-form value-var)
+                        `(unless (not ,inner-form)
+                           (ert-fail ,form-description-form)))))
+
+(defun ert--should-error-handle-error (form-description-fn
+                                       condition type exclude-subtypes)
+  "Helper function for `should-error'.
+
+Determines whether CONDITION matches TYPE and EXCLUDE-SUBTYPES,
+and aborts the current test as failed if it doesn't."
+  (let ((signalled-conditions (get (car condition) 'error-conditions))
+        (handled-conditions (etypecase type
+                              (list type)
+                              (symbol (list type)))))
+    (assert signalled-conditions)
+    (unless (ert--intersection signalled-conditions handled-conditions)
+      (ert-fail (append
+                 (funcall form-description-fn)
+                 (list
+                  :condition condition
+                  :fail-reason (concat "the error signalled did not"
+                                       " have the expected type")))))
+    (when exclude-subtypes
+      (unless (member (car condition) handled-conditions)
+        (ert-fail (append
+                   (funcall form-description-fn)
+                   (list
+                    :condition condition
+                    :fail-reason (concat "the error signalled was a subtype"
+                                         " of the expected type"))))))))
+
+;; FIXME: The expansion will evaluate the keyword args (if any) in
+;; nonstandard order.
+(defmacro* should-error (form &rest keys &key type exclude-subtypes)
+  "Evaluate FORM and check that it signals an error.
+
+The error signalled needs to match TYPE.  TYPE should be a list
+of condition names.  (It can also be a non-nil symbol, which is
+equivalent to a singleton list containing that symbol.)  If
+EXCLUDE-SUBTYPES is nil, the error matches TYPE if one of its
+condition names is an element of TYPE.  If EXCLUDE-SUBTYPES is
+non-nil, the error matches TYPE if it is an element of TYPE.
+
+If the error matches, returns (ERROR-SYMBOL . DATA) from the
+error.  If not, or if no error was signalled, abort the test as
+failed."
+  (unless type (setq type ''error))
+  (ert--expand-should
+   `(should-error ,form ,@keys)
+   form
+   (lambda (inner-form form-description-form value-var)
+     (let ((errorp (ert--gensym "errorp"))
+           (form-description-fn (ert--gensym "form-description-fn-")))
+       `(let ((,errorp nil)
+              (,form-description-fn (lambda () ,form-description-form)))
+          (condition-case -condition-
+              ,inner-form
+            ;; We can't use ,type here because we want to evaluate it.
+            (error
+             (setq ,errorp t)
+             (ert--should-error-handle-error ,form-description-fn
+                                             -condition-
+                                             ,type ,exclude-subtypes)
+             (setq ,value-var -condition-)))
+          (unless ,errorp
+            (ert-fail (append
+                       (funcall ,form-description-fn)
+                       (list
+                        :fail-reason "did not signal an error")))))))))
+
+
+;;; Explanation of `should' failures.
+
+;; TODO(ohler): Rework explanations so that they are displayed in a
+;; similar way to `ert-info' messages; in particular, allow text
+;; buttons in explanations that give more detail or open an ediff
+;; buffer.  Perhaps explanations should be reported through `ert-info'
+;; rather than as part of the condition.
+
+(defun ert--proper-list-p (x)
+  "Return non-nil if X is a proper list, nil otherwise."
+  (loop
+   for firstp = t then nil
+   for fast = x then (cddr fast)
+   for slow = x then (cdr slow) do
+   (when (null fast) (return t))
+   (when (not (consp fast)) (return nil))
+   (when (null (cdr fast)) (return t))
+   (when (not (consp (cdr fast))) (return nil))
+   (when (and (not firstp) (eq fast slow)) (return nil))))
+
+(defun ert--explain-format-atom (x)
+  "Format the atom X for `ert--explain-not-equal'."
+  (typecase x
+    (fixnum (list x (format "#x%x" x) (format "?%c" x)))
+    (t x)))
+
+(defun ert--explain-not-equal (a b)
+  "Explainer function for `equal'.
+
+Returns a programmer-readable explanation of why A and B are not
+`equal', or nil if they are."
+  (if (not (equal (type-of a) (type-of b)))
+      `(different-types ,a ,b)
+    (etypecase a
+      (cons
+       (let ((a-proper-p (ert--proper-list-p a))
+             (b-proper-p (ert--proper-list-p b)))
+         (if (not (eql (not a-proper-p) (not b-proper-p)))
+             `(one-list-proper-one-improper ,a ,b)
+           (if a-proper-p
+               (if (not (equal (length a) (length b)))
+                   `(proper-lists-of-different-length ,(length a) ,(length b)
+                                                      ,a ,b
+                                                      first-mismatch-at
+                                                      ,(ert--mismatch a b))
+                 (loop for i from 0
+                       for ai in a
+                       for bi in b
+                       for xi = (ert--explain-not-equal ai bi)
+                       do (when xi (return `(list-elt ,i ,xi)))
+                       finally (assert (equal a b) t)))
+             (let ((car-x (ert--explain-not-equal (car a) (car b))))
+               (if car-x
+                   `(car ,car-x)
+                 (let ((cdr-x (ert--explain-not-equal (cdr a) (cdr b))))
+                   (if cdr-x
+                       `(cdr ,cdr-x)
+                     (assert (equal a b) t)
+                     nil))))))))
+      (array (if (not (equal (length a) (length b)))
+                 `(arrays-of-different-length ,(length a) ,(length b)
+                                              ,a ,b
+                                              ,@(unless (char-table-p a)
+                                                  `(first-mismatch-at
+                                                    ,(ert--mismatch a b))))
+               (loop for i from 0
+                     for ai across a
+                     for bi across b
+                     for xi = (ert--explain-not-equal ai bi)
+                     do (when xi (return `(array-elt ,i ,xi)))
+                     finally (assert (equal a b) t))))
+      (atom (if (not (equal a b))
+                (if (and (symbolp a) (symbolp b) (string= a b))
+                    `(different-symbols-with-the-same-name ,a ,b)
+                  `(different-atoms ,(ert--explain-format-atom a)
+                                    ,(ert--explain-format-atom b)))
+              nil)))))
+(put 'equal 'ert-explainer 'ert--explain-not-equal)
+
+(defun ert--significant-plist-keys (plist)
+  "Return the keys of PLIST that have non-null values, in order."
+  (assert (zerop (mod (length plist) 2)) t)
+  (loop for (key value . rest) on plist by #'cddr
+        unless (or (null value) (memq key accu)) collect key into accu
+        finally (return accu)))
+
+(defun ert--plist-difference-explanation (a b)
+  "Return a programmer-readable explanation of why A and B are different plists.
+
+Returns nil if they are equivalent, i.e., have the same value for
+each key, where absent values are treated as nil.  The order of
+key/value pairs in each list does not matter."
+  (assert (zerop (mod (length a) 2)) t)
+  (assert (zerop (mod (length b) 2)) t)
+  ;; Normalizing the plists would be another way to do this but it
+  ;; requires a total ordering on all lisp objects (since any object
+  ;; is valid as a text property key).  Perhaps defining such an
+  ;; ordering is useful in other contexts, too, but it's a lot of
+  ;; work, so let's punt on it for now.
+  (let* ((keys-a (ert--significant-plist-keys a))
+         (keys-b (ert--significant-plist-keys b))
+         (keys-in-a-not-in-b (ert--set-difference-eq keys-a keys-b))
+         (keys-in-b-not-in-a (ert--set-difference-eq keys-b keys-a)))
+    (flet ((explain-with-key (key)
+             (let ((value-a (plist-get a key))
+                   (value-b (plist-get b key)))
+               (assert (not (equal value-a value-b)) t)
+               `(different-properties-for-key
+                 ,key ,(ert--explain-not-equal-including-properties value-a
+                                                                    value-b)))))
+      (cond (keys-in-a-not-in-b
+             (explain-with-key (first keys-in-a-not-in-b)))
+            (keys-in-b-not-in-a
+             (explain-with-key (first keys-in-b-not-in-a)))
+            (t
+             (loop for key in keys-a
+                   when (not (equal (plist-get a key) (plist-get b key)))
+                   return (explain-with-key key)))))))
+
+(defun ert--abbreviate-string (s len suffixp)
+  "Shorten string S to at most LEN chars.
+
+If SUFFIXP is non-nil, returns a suffix of S, otherwise a prefix."
+  (let ((n (length s)))
+    (cond ((< n len)
+           s)
+          (suffixp
+           (substring s (- n len)))
+          (t
+           (substring s 0 len)))))
+
+(defun ert--explain-not-equal-including-properties (a b)
+  "Explainer function for `ert-equal-including-properties'.
+
+Returns a programmer-readable explanation of why A and B are not
+`ert-equal-including-properties', or nil if they are."
+  (if (not (equal a b))
+      (ert--explain-not-equal a b)
+    (assert (stringp a) t)
+    (assert (stringp b) t)
+    (assert (eql (length a) (length b)) t)
+    (loop for i from 0 to (length a)
+          for props-a = (text-properties-at i a)
+          for props-b = (text-properties-at i b)
+          for difference = (ert--plist-difference-explanation props-a props-b)
+          do (when difference
+               (return `(char ,i ,(substring-no-properties a i (1+ i))
+                              ,difference
+                              context-before
+                              ,(ert--abbreviate-string
+                                (substring-no-properties a 0 i)
+                                10 t)
+                              context-after
+                              ,(ert--abbreviate-string
+                                (substring-no-properties a (1+ i))
+                                10 nil))))
+          ;; TODO(ohler): Get `equal-including-properties' fixed in
+          ;; Emacs, delete `ert-equal-including-properties', and
+          ;; re-enable this assertion.
+          ;;finally (assert (equal-including-properties a b) t)
+          )))
+(put 'ert-equal-including-properties
+     'ert-explainer
+     'ert--explain-not-equal-including-properties)
+
+
+;;; Implementation of `ert-info'.
+
+;; TODO(ohler): The name `info' clashes with
+;; `ert--test-execution-info'.  One or both should be renamed.
+(defvar ert--infos '()
+  "The stack of `ert-info' infos that currently apply.
+
+Bound dynamically.  This is a list of (PREFIX . MESSAGE) pairs.")
+
+(defmacro* ert-info ((message-form &key ((:prefix prefix-form) "Info: "))
+                     &body body)
+  "Evaluate MESSAGE-FORM and BODY, and report the message if BODY fails.
+
+To be used within ERT tests.  MESSAGE-FORM should evaluate to a
+string that will be displayed together with the test result if
+the test fails.  PREFIX-FORM should evaluate to a string as well
+and is displayed in front of the value of MESSAGE-FORM."
+  (declare (debug ((form &rest [sexp form]) body))
+	   (indent 1))
+  `(let ((ert--infos (cons (cons ,prefix-form ,message-form) ert--infos)))
+     ,@body))
+
+
+
+;;; Facilities for running a single test.
+
+(defvar ert-debug-on-error nil
+  "Non-nil means enter debugger when a test fails or terminates with an error.")
+
+;; The data structures that represent the result of running a test.
+(defstruct ert-test-result
+  (messages nil)
+  (should-forms nil)
+  )
+(defstruct (ert-test-passed (:include ert-test-result)))
+(defstruct (ert-test-result-with-condition (:include ert-test-result))
+  (condition (assert nil))
+  (backtrace (assert nil))
+  (infos (assert nil)))
+(defstruct (ert-test-quit (:include ert-test-result-with-condition)))
+(defstruct (ert-test-failed (:include ert-test-result-with-condition)))
+(defstruct (ert-test-aborted-with-non-local-exit (:include ert-test-result)))
+
+
+(defun ert--record-backtrace ()
+  "Record the current backtrace (as a list) and return it."
+  ;; Since the backtrace is stored in the result object, result
+  ;; objects must only be printed with appropriate limits
+  ;; (`print-level' and `print-length') in place.  For interactive
+  ;; use, the cost of ensuring this possibly outweighs the advantage
+  ;; of storing the backtrace for
+  ;; `ert-results-pop-to-backtrace-for-test-at-point' given that we
+  ;; already have `ert-results-rerun-test-debugging-errors-at-point'.
+  ;; For batch use, however, printing the backtrace may be useful.
+  (loop
+   ;; 6 is the number of frames our own debugger adds (when
+   ;; compiled; more when interpreted).  FIXME: Need to describe a
+   ;; procedure for determining this constant.
+   for i from 6
+   for frame = (backtrace-frame i)
+   while frame
+   collect frame))
+
+(defun ert--print-backtrace (backtrace)
+  "Format the backtrace BACKTRACE to the current buffer."
+  ;; This is essentially a reimplementation of Fbacktrace
+  ;; (src/eval.c), but for a saved backtrace, not the current one.
+  (let ((print-escape-newlines t)
+        (print-level 8)
+        (print-length 50))
+    (dolist (frame backtrace)
+      (ecase (first frame)
+        ((nil)
+         ;; Special operator.
+         (destructuring-bind (special-operator &rest arg-forms)
+             (cdr frame)
+           (insert
+            (format "  %S\n" (list* special-operator arg-forms)))))
+        ((t)
+         ;; Function call.
+         (destructuring-bind (fn &rest args) (cdr frame)
+           (insert (format "  %S(" fn))
+           (loop for firstp = t then nil
+                 for arg in args do
+                 (unless firstp
+                   (insert " "))
+                 (insert (format "%S" arg)))
+           (insert ")\n")))))))
+
+;; A container for the state of the execution of a single test and
+;; environment data needed during its execution.
+(defstruct ert--test-execution-info
+  (test (assert nil))
+  (result (assert nil))
+  ;; A thunk that may be called when RESULT has been set to its final
+  ;; value and test execution should be terminated.  Should not
+  ;; return.
+  (exit-continuation (assert nil))
+  ;; The binding of `debugger' outside of the execution of the test.
+  next-debugger
+  ;; The binding of `ert-debug-on-error' that is in effect for the
+  ;; execution of the current test.  We store it to avoid being
+  ;; affected by any new bindings the test itself may establish.  (I
+  ;; don't remember whether this feature is important.)
+  ert-debug-on-error)
+
+(defun ert--run-test-debugger (info debugger-args)
+  "During a test run, `debugger' is bound to a closure that calls this function.
+
+This function records failures and errors and either terminates
+the test silently or calls the interactive debugger, as
+appropriate.
+
+INFO is the ert--test-execution-info corresponding to this test
+run.  DEBUGGER-ARGS are the arguments to `debugger'."
+  (destructuring-bind (first-debugger-arg &rest more-debugger-args)
+      debugger-args
+    (ecase first-debugger-arg
+      ((lambda debug t exit nil)
+       (apply (ert--test-execution-info-next-debugger info) debugger-args))
+      (error
+       (let* ((condition (first more-debugger-args))
+              (type (case (car condition)
+                      ((quit) 'quit)
+                      (otherwise 'failed)))
+              (backtrace (ert--record-backtrace))
+              (infos (reverse ert--infos)))
+         (setf (ert--test-execution-info-result info)
+               (ecase type
+                 (quit
+                  (make-ert-test-quit :condition condition
+                                      :backtrace backtrace
+                                      :infos infos))
+                 (failed
+                  (make-ert-test-failed :condition condition
+                                        :backtrace backtrace
+                                        :infos infos))))
+         ;; Work around Emacs' heuristic (in eval.c) for detecting
+         ;; errors in the debugger.
+         (incf num-nonmacro-input-events)
+         ;; FIXME: We should probably implement more fine-grained
+         ;; control a la non-t `debug-on-error' here.
+         (cond
+          ((ert--test-execution-info-ert-debug-on-error info)
+           (apply (ert--test-execution-info-next-debugger info) debugger-args))
+          (t))
+         (funcall (ert--test-execution-info-exit-continuation info)))))))
+
+(defun ert--run-test-internal (ert-test-execution-info)
+  "Low-level function to run a test according to ERT-TEST-EXECUTION-INFO.
+
+This mainly sets up debugger-related bindings."
+  (lexical-let ((info ert-test-execution-info))
+    (setf (ert--test-execution-info-next-debugger info) debugger
+          (ert--test-execution-info-ert-debug-on-error info) ert-debug-on-error)
+    (catch 'ert--pass
+      ;; For now, each test gets its own temp buffer and its own
+      ;; window excursion, just to be safe.  If this turns out to be
+      ;; too expensive, we can remove it.
+      (with-temp-buffer
+        (save-window-excursion
+          (let ((debugger (lambda (&rest debugger-args)
+                            (ert--run-test-debugger info debugger-args)))
+                (debug-on-error t)
+                (debug-on-quit t)
+                ;; FIXME: Do we need to store the old binding of this
+                ;; and consider it in `ert--run-test-debugger'?
+                (debug-ignored-errors nil)
+                (ert--infos '()))
+            (funcall (ert-test-body (ert--test-execution-info-test info))))))
+      (ert-pass))
+    (setf (ert--test-execution-info-result info) (make-ert-test-passed)))
+  nil)
+
+(defun ert--force-message-log-buffer-truncation ()
+  "Immediately truncate *Messages* buffer according to `message-log-max'.
+
+This can be useful after reducing the value of `message-log-max'."
+  (with-current-buffer (get-buffer-create "*Messages*")
+    ;; This is a reimplementation of this part of message_dolog() in xdisp.c:
+    ;; if (NATNUMP (Vmessage_log_max))
+    ;;   {
+    ;;     scan_newline (Z, Z_BYTE, BEG, BEG_BYTE,
+    ;;                   -XFASTINT (Vmessage_log_max) - 1, 0);
+    ;;     del_range_both (BEG, BEG_BYTE, PT, PT_BYTE, 0);
+    ;;   }
+    (when (and (integerp message-log-max) (>= message-log-max 0))
+      (let ((begin (point-min))
+            (end (save-excursion
+                   (goto-char (point-max))
+                   (forward-line (- message-log-max))
+                   (point))))
+        (delete-region begin end)))))
+
+(defvar ert--running-tests nil
+  "List of tests that are currently in execution.
+
+This list is empty while no test is running, has one element
+while a test is running, two elements while a test run from
+inside a test is running, etc.  The list is in order of nesting,
+innermost test first.
+
+The elements are of type `ert-test'.")
+
+(defun ert-run-test (ert-test)
+  "Run ERT-TEST.
+
+Returns the result and stores it in ERT-TEST's `most-recent-result' slot."
+  (setf (ert-test-most-recent-result ert-test) nil)
+  (block error
+    (lexical-let ((begin-marker
+                   (with-current-buffer (get-buffer-create "*Messages*")
+                     (set-marker (make-marker) (point-max)))))
+      (unwind-protect
+          (lexical-let ((info (make-ert--test-execution-info
+                               :test ert-test
+                               :result
+                               (make-ert-test-aborted-with-non-local-exit)
+                               :exit-continuation (lambda ()
+                                                    (return-from error nil))))
+                        (should-form-accu (list)))
+            (unwind-protect
+                (let ((ert--should-execution-observer
+                       (lambda (form-description)
+                         (push form-description should-form-accu)))
+                      (message-log-max t)
+                      (ert--running-tests (cons ert-test ert--running-tests)))
+                  (ert--run-test-internal info))
+              (let ((result (ert--test-execution-info-result info)))
+                (setf (ert-test-result-messages result)
+                      (with-current-buffer (get-buffer-create "*Messages*")
+                        (buffer-substring begin-marker (point-max))))
+                (ert--force-message-log-buffer-truncation)
+                (setq should-form-accu (nreverse should-form-accu))
+                (setf (ert-test-result-should-forms result)
+                      should-form-accu)
+                (setf (ert-test-most-recent-result ert-test) result))))
+        (set-marker begin-marker nil))))
+  (ert-test-most-recent-result ert-test))
+
+(defun ert-running-test ()
+  "Return the top-level test currently executing."
+  (car (last ert--running-tests)))
+
+
+;;; Test selectors.
+
+(defun ert-test-result-type-p (result result-type)
+  "Return non-nil if RESULT matches type RESULT-TYPE.
+
+Valid result types:
+
+nil -- Never matches.
+t -- Always matches.
+:failed, :passed -- Matches corresponding results.
+\(and TYPES...\) -- Matches if all TYPES match.
+\(or TYPES...\) -- Matches if some TYPES match.
+\(not TYPE\) -- Matches if TYPE does not match.
+\(satisfies PREDICATE\) -- Matches if PREDICATE returns true when called with
+                           RESULT."
+  ;; It would be easy to add `member' and `eql' types etc., but I
+  ;; haven't bothered yet.
+  (etypecase result-type
+    ((member nil) nil)
+    ((member t) t)
+    ((member :failed) (ert-test-failed-p result))
+    ((member :passed) (ert-test-passed-p result))
+    (cons
+     (destructuring-bind (operator &rest operands) result-type
+       (ecase operator
+         (and
+          (case (length operands)
+            (0 t)
+            (t
+             (and (ert-test-result-type-p result (first operands))
+                  (ert-test-result-type-p result `(and ,@(rest operands)))))))
+         (or
+          (case (length operands)
+            (0 nil)
+            (t
+             (or (ert-test-result-type-p result (first operands))
+                 (ert-test-result-type-p result `(or ,@(rest operands)))))))
+         (not
+          (assert (eql (length operands) 1))
+          (not (ert-test-result-type-p result (first operands))))
+         (satisfies
+          (assert (eql (length operands) 1))
+          (funcall (first operands) result)))))))
+
+(defun ert-test-result-expected-p (test result)
+  "Return non-nil if TEST's expected result type matches RESULT."
+  (ert-test-result-type-p result (ert-test-expected-result-type test)))
+
+(defun ert-select-tests (selector universe)
+  "Return the tests that match SELECTOR.
+
+UNIVERSE specifies the set of tests to select from; it should be
+a list of tests, or t, which refers to all tests named by symbols
+in `obarray'.
+
+Returns the set of tests as a list.
+
+Valid selectors:
+
+nil -- Selects the empty set.
+t -- Selects UNIVERSE.
+:new -- Selects all tests that have not been run yet.
+:failed, :passed -- Select tests according to their most recent result.
+:expected, :unexpected -- Select tests according to their most recent result.
+a string -- Selects all tests that have a name that matches the string,
+            a regexp.
+a test -- Selects that test.
+a symbol -- Selects the test that the symbol names, errors if none.
+\(member TESTS...\) -- Selects TESTS, a list of tests or symbols naming tests.
+\(eql TEST\) -- Selects TEST, a test or a symbol naming a test.
+\(and SELECTORS...\) -- Selects the tests that match all SELECTORS.
+\(or SELECTORS...\) -- Selects the tests that match any SELECTOR.
+\(not SELECTOR\) -- Selects all tests that do not match SELECTOR.
+\(tag TAG) -- Selects all tests that have TAG on their tags list.
+\(satisfies PREDICATE\) -- Selects all tests that satisfy PREDICATE.
+
+Only selectors that require a superset of tests, such
+as (satisfies ...), strings, :new, etc. make use of UNIVERSE.
+Selectors that do not, such as \(member ...\), just return the
+set implied by them without checking whether it is really
+contained in UNIVERSE."
+  ;; This code needs to match the etypecase in
+  ;; `ert-insert-human-readable-selector'.
+  (etypecase selector
+    ((member nil) nil)
+    ((member t) (etypecase universe
+                  (list universe)
+                  ((member t) (ert-select-tests "" universe))))
+    ((member :new) (ert-select-tests
+                    `(satisfies ,(lambda (test)
+                                   (null (ert-test-most-recent-result test))))
+                    universe))
+    ((member :failed) (ert-select-tests
+                       `(satisfies ,(lambda (test)
+                                      (ert-test-result-type-p
+                                       (ert-test-most-recent-result test)
+                                       ':failed)))
+                       universe))
+    ((member :passed) (ert-select-tests
+                       `(satisfies ,(lambda (test)
+                                      (ert-test-result-type-p
+                                       (ert-test-most-recent-result test)
+                                       ':passed)))
+                       universe))
+    ((member :expected) (ert-select-tests
+                         `(satisfies
+                           ,(lambda (test)
+                              (ert-test-result-expected-p
+                               test
+                               (ert-test-most-recent-result test))))
+                         universe))
+    ((member :unexpected) (ert-select-tests `(not :expected) universe))
+    (string
+     (etypecase universe
+       ((member t) (mapcar #'ert-get-test
+                           (apropos-internal selector #'ert-test-boundp)))
+       (list (ert--remove-if-not (lambda (test)
+                                   (and (ert-test-name test)
+                                        (string-match selector
+                                                      (ert-test-name test))))
+                                 universe))))
+    (ert-test (list selector))
+    (symbol
+     (assert (ert-test-boundp selector))
+     (list (ert-get-test selector)))
+    (cons
+     (destructuring-bind (operator &rest operands) selector
+       (ecase operator
+         (member
+          (mapcar (lambda (purported-test)
+                    (etypecase purported-test
+                      (symbol (assert (ert-test-boundp purported-test))
+                              (ert-get-test purported-test))
+                      (ert-test purported-test)))
+                  operands))
+         (eql
+          (assert (eql (length operands) 1))
+          (ert-select-tests `(member ,@operands) universe))
+         (and
+          ;; Do these definitions of AND, NOT and OR satisfy de
+          ;; Morgan's laws?  Should they?
+          (case (length operands)
+            (0 (ert-select-tests 't universe))
+            (t (ert-select-tests `(and ,@(rest operands))
+                                 (ert-select-tests (first operands)
+                                                   universe)))))
+         (not
+          (assert (eql (length operands) 1))
+          (let ((all-tests (ert-select-tests 't universe)))
+            (ert--set-difference all-tests
+                                 (ert-select-tests (first operands)
+                                                   all-tests))))
+         (or
+          (case (length operands)
+            (0 (ert-select-tests 'nil universe))
+            (t (ert--union (ert-select-tests (first operands) universe)
+                           (ert-select-tests `(or ,@(rest operands))
+                                             universe)))))
+         (tag
+          (assert (eql (length operands) 1))
+          (let ((tag (first operands)))
+            (ert-select-tests `(satisfies
+                                ,(lambda (test)
+                                   (member tag (ert-test-tags test))))
+                              universe)))
+         (satisfies
+          (assert (eql (length operands) 1))
+          (ert--remove-if-not (first operands)
+                              (ert-select-tests 't universe))))))))
+
+(defun ert--insert-human-readable-selector (selector)
+  "Insert a human-readable presentation of SELECTOR into the current buffer."
+  ;; This is needed to avoid printing the (huge) contents of the
+  ;; `backtrace' slot of the result objects in the
+  ;; `most-recent-result' slots of test case objects in (eql ...) or
+  ;; (member ...) selectors.
+  (labels ((rec (selector)
+             ;; This code needs to match the etypecase in `ert-select-tests'.
+             (etypecase selector
+               ((or (member nil t
+                            :new :failed :passed
+                            :expected :unexpected)
+                    string
+                    symbol)
+                selector)
+               (ert-test
+                (if (ert-test-name selector)
+                    (make-symbol (format "<%S>" (ert-test-name selector)))
+                  (make-symbol "<unnamed test>")))
+               (cons
+                (destructuring-bind (operator &rest operands) selector
+                  (ecase operator
+                    ((member eql and not or)
+                     `(,operator ,@(mapcar #'rec operands)))
+                    ((member tag satisfies)
+                     selector)))))))
+    (insert (format "%S" (rec selector)))))
+
+
+;;; Facilities for running a whole set of tests.
+
+;; The data structure that contains the set of tests being executed
+;; during one particular test run, their results, the state of the
+;; execution, and some statistics.
+;;
+;; The data about results and expected results of tests may seem
+;; redundant here, since the test objects also carry such information.
+;; However, the information in the test objects may be more recent, it
+;; may correspond to a different test run.  We need the information
+;; that corresponds to this run in order to be able to update the
+;; statistics correctly when a test is re-run interactively and has a
+;; different result than before.
+(defstruct ert--stats
+  (selector (assert nil))
+  ;; The tests, in order.
+  (tests (assert nil) :type vector)
+  ;; A map of test names (or the test objects themselves for unnamed
+  ;; tests) to indices into the `tests' vector.
+  (test-map (assert nil) :type hash-table)
+  ;; The results of the tests during this run, in order.
+  (test-results (assert nil) :type vector)
+  ;; The start times of the tests, in order, as reported by
+  ;; `current-time'.
+  (test-start-times (assert nil) :type vector)
+  ;; The end times of the tests, in order, as reported by
+  ;; `current-time'.
+  (test-end-times (assert nil) :type vector)
+  (passed-expected 0)
+  (passed-unexpected 0)
+  (failed-expected 0)
+  (failed-unexpected 0)
+  (start-time nil)
+  (end-time nil)
+  (aborted-p nil)
+  (current-test nil)
+  ;; The time at or after which the next redisplay should occur, as a
+  ;; float.
+  (next-redisplay 0.0))
+
+(defun ert-stats-completed-expected (stats)
+  "Return the number of tests in STATS that had expected results."
+  (+ (ert--stats-passed-expected stats)
+     (ert--stats-failed-expected stats)))
+
+(defun ert-stats-completed-unexpected (stats)
+  "Return the number of tests in STATS that had unexpected results."
+  (+ (ert--stats-passed-unexpected stats)
+     (ert--stats-failed-unexpected stats)))
+
+(defun ert-stats-completed (stats)
+  "Number of tests in STATS that have run so far."
+  (+ (ert-stats-completed-expected stats)
+     (ert-stats-completed-unexpected stats)))
+
+(defun ert-stats-total (stats)
+  "Number of tests in STATS, regardless of whether they have run yet."
+  (length (ert--stats-tests stats)))
+
+;; The stats object of the current run, dynamically bound.  This is
+;; used for the mode line progress indicator.
+(defvar ert--current-run-stats nil)
+
+(defun ert--stats-test-key (test)
+  "Return the key used for TEST in the test map of ert--stats objects.
+
+Returns the name of TEST if it has one, or TEST itself otherwise."
+  (or (ert-test-name test) test))
+
+(defun ert--stats-set-test-and-result (stats pos test result)
+  "Change STATS by replacing the test at position POS with TEST and RESULT.
+
+Also changes the counters in STATS to match."
+  (let* ((tests (ert--stats-tests stats))
+         (results (ert--stats-test-results stats))
+         (old-test (aref tests pos))
+         (map (ert--stats-test-map stats)))
+    (flet ((update (d)
+             (if (ert-test-result-expected-p (aref tests pos)
+                                             (aref results pos))
+                 (etypecase (aref results pos)
+                   (ert-test-passed (incf (ert--stats-passed-expected stats) d))
+                   (ert-test-failed (incf (ert--stats-failed-expected stats) d))
+                   (null)
+                   (ert-test-aborted-with-non-local-exit))
+               (etypecase (aref results pos)
+                 (ert-test-passed (incf (ert--stats-passed-unexpected stats) d))
+                 (ert-test-failed (incf (ert--stats-failed-unexpected stats) d))
+                 (null)
+                 (ert-test-aborted-with-non-local-exit)))))
+      ;; Adjust counters to remove the result that is currently in stats.
+      (update -1)
+      ;; Put new test and result into stats.
+      (setf (aref tests pos) test
+            (aref results pos) result)
+      (remhash (ert--stats-test-key old-test) map)
+      (setf (gethash (ert--stats-test-key test) map) pos)
+      ;; Adjust counters to match new result.
+      (update +1)
+      nil)))
+
+(defun ert--make-stats (tests selector)
+  "Create a new `ert--stats' object for running TESTS.
+
+SELECTOR is the selector that was used to select TESTS."
+  (setq tests (ert--coerce-to-vector tests))
+  (let ((map (make-hash-table :size (length tests))))
+    (loop for i from 0
+          for test across tests
+          for key = (ert--stats-test-key test) do
+          (assert (not (gethash key map)))
+          (setf (gethash key map) i))
+    (make-ert--stats :selector selector
+                     :tests tests
+                     :test-map map
+                     :test-results (make-vector (length tests) nil)
+                     :test-start-times (make-vector (length tests) nil)
+                     :test-end-times (make-vector (length tests) nil))))
+
+(defun ert-run-or-rerun-test (stats test listener)
+  ;; checkdoc-order: nil
+  "Run the single test TEST and record the result using STATS and LISTENER."
+  (let ((ert--current-run-stats stats)
+        (pos (ert--stats-test-pos stats test)))
+    (ert--stats-set-test-and-result stats pos test nil)
+    ;; Call listener after setting/before resetting
+    ;; (ert--stats-current-test stats); the listener might refresh the
+    ;; mode line display, and if the value is not set yet/any more
+    ;; during this refresh, the mode line will flicker unnecessarily.
+    (setf (ert--stats-current-test stats) test)
+    (funcall listener 'test-started stats test)
+    (setf (ert-test-most-recent-result test) nil)
+    (setf (aref (ert--stats-test-start-times stats) pos) (current-time))
+    (unwind-protect
+        (ert-run-test test)
+      (setf (aref (ert--stats-test-end-times stats) pos) (current-time))
+      (let ((result (ert-test-most-recent-result test)))
+        (ert--stats-set-test-and-result stats pos test result)
+        (funcall listener 'test-ended stats test result))
+      (setf (ert--stats-current-test stats) nil))))
+
+(defun ert-run-tests (selector listener)
+  "Run the tests specified by SELECTOR, sending progress updates to LISTENER."
+  (let* ((tests (ert-select-tests selector t))
+         (stats (ert--make-stats tests selector)))
+    (setf (ert--stats-start-time stats) (current-time))
+    (funcall listener 'run-started stats)
+    (let ((abortedp t))
+      (unwind-protect
+          (let ((ert--current-run-stats stats))
+            (force-mode-line-update)
+            (unwind-protect
+                (progn
+                  (loop for test in tests do
+                        (ert-run-or-rerun-test stats test listener))
+                  (setq abortedp nil))
+              (setf (ert--stats-aborted-p stats) abortedp)
+              (setf (ert--stats-end-time stats) (current-time))
+              (funcall listener 'run-ended stats abortedp)))
+        (force-mode-line-update))
+      stats)))
+
+(defun ert--stats-test-pos (stats test)
+  ;; checkdoc-order: nil
+  "Return the position (index) of TEST in the run represented by STATS."
+  (gethash (ert--stats-test-key test) (ert--stats-test-map stats)))
+
+
+;;; Formatting functions shared across UIs.
+
+(defun ert--format-time-iso8601 (time)
+  "Format TIME in the variant of ISO 8601 used for timestamps in ERT."
+  (format-time-string "%Y-%m-%d %T%z" time))
+
+(defun ert-char-for-test-result (result expectedp)
+  "Return a character that represents the test result RESULT.
+
+EXPECTEDP specifies whether the result was expected."
+  (let ((s (etypecase result
+             (ert-test-passed ".P")
+             (ert-test-failed "fF")
+             (null "--")
+             (ert-test-aborted-with-non-local-exit "aA"))))
+    (elt s (if expectedp 0 1))))
+
+(defun ert-string-for-test-result (result expectedp)
+  "Return a string that represents the test result RESULT.
+
+EXPECTEDP specifies whether the result was expected."
+  (let ((s (etypecase result
+             (ert-test-passed '("passed" "PASSED"))
+             (ert-test-failed '("failed" "FAILED"))
+             (null '("unknown" "UNKNOWN"))
+             (ert-test-aborted-with-non-local-exit '("aborted" "ABORTED")))))
+    (elt s (if expectedp 0 1))))
+
+(defun ert--pp-with-indentation-and-newline (object)
+  "Pretty-print OBJECT, indenting it to the current column of point.
+Ensures a final newline is inserted."
+  (let ((begin (point)))
+    (pp object (current-buffer))
+    (unless (bolp) (insert "\n"))
+    (save-excursion
+      (goto-char begin)
+      (indent-sexp))))
+
+(defun ert--insert-infos (result)
+  "Insert `ert-info' infos from RESULT into current buffer.
+
+RESULT must be an `ert-test-result-with-condition'."
+  (check-type result ert-test-result-with-condition)
+  (dolist (info (ert-test-result-with-condition-infos result))
+    (destructuring-bind (prefix . message) info
+      (let ((begin (point))
+            (indentation (make-string (+ (length prefix) 4) ?\s))
+            (end nil))
+        (unwind-protect
+            (progn
+              (insert message "\n")
+              (setq end (copy-marker (point)))
+              (goto-char begin)
+              (insert "    " prefix)
+              (forward-line 1)
+              (while (< (point) end)
+                (insert indentation)
+                (forward-line 1)))
+          (when end (set-marker end nil)))))))
+
+
+;;; Running tests in batch mode.
+
+(defvar ert-batch-backtrace-right-margin 70
+  "*The maximum line length for printing backtraces in `ert-run-tests-batch'.")
+
+;;;###autoload
+(defun ert-run-tests-batch (&optional selector)
+  "Run the tests specified by SELECTOR, printing results to the terminal.
+
+SELECTOR works as described in `ert-select-tests', except if
+SELECTOR is nil, in which case all tests rather than none will be
+run; this makes the command line \"emacs -batch -l my-tests.el -f
+ert-run-tests-batch-and-exit\" useful.
+
+Returns the stats object."
+  (unless selector (setq selector 't))
+  (ert-run-tests
+   selector
+   (lambda (event-type &rest event-args)
+     (ecase event-type
+       (run-started
+        (destructuring-bind (stats) event-args
+          (message "Running %s tests (%s)"
+                   (length (ert--stats-tests stats))
+                   (ert--format-time-iso8601 (ert--stats-start-time stats)))))
+       (run-ended
+        (destructuring-bind (stats abortedp) event-args
+          (let ((unexpected (ert-stats-completed-unexpected stats))
+                (expected-failures (ert--stats-failed-expected stats)))
+            (message "\n%sRan %s tests, %s results as expected%s (%s)%s\n"
+                     (if (not abortedp)
+                         ""
+                       "Aborted: ")
+                     (ert-stats-total stats)
+                     (ert-stats-completed-expected stats)
+                     (if (zerop unexpected)
+                         ""
+                       (format ", %s unexpected" unexpected))
+                     (ert--format-time-iso8601 (ert--stats-end-time stats))
+                     (if (zerop expected-failures)
+                         ""
+                       (format "\n%s expected failures" expected-failures)))
+            (unless (zerop unexpected)
+              (message "%s unexpected results:" unexpected)
+              (loop for test across (ert--stats-tests stats)
+                    for result = (ert-test-most-recent-result test) do
+                    (when (not (ert-test-result-expected-p test result))
+                      (message "%9s  %S"
+                               (ert-string-for-test-result result nil)
+                               (ert-test-name test))))
+              (message "%s" "")))))
+       (test-started
+        )
+       (test-ended
+        (destructuring-bind (stats test result) event-args
+          (unless (ert-test-result-expected-p test result)
+            (etypecase result
+              (ert-test-passed
+               (message "Test %S passed unexpectedly" (ert-test-name test)))
+              (ert-test-result-with-condition
+               (message "Test %S backtrace:" (ert-test-name test))
+               (with-temp-buffer
+                 (ert--print-backtrace (ert-test-result-with-condition-backtrace
+                                        result))
+                 (goto-char (point-min))
+                 (while (not (eobp))
+                   (let ((start (point))
+                         (end (progn (end-of-line) (point))))
+                     (setq end (min end
+                                    (+ start ert-batch-backtrace-right-margin)))
+                     (message "%s" (buffer-substring-no-properties
+                                    start end)))
+                   (forward-line 1)))
+               (with-temp-buffer
+                 (ert--insert-infos result)
+                 (insert "    ")
+                 (let ((print-escape-newlines t)
+                       (print-level 5)
+                       (print-length 10))
+                   (let ((begin (point)))
+                     (ert--pp-with-indentation-and-newline
+                      (ert-test-result-with-condition-condition result))))
+                 (goto-char (1- (point-max)))
+                 (assert (looking-at "\n"))
+                 (delete-char 1)
+                 (message "Test %S condition:" (ert-test-name test))
+                 (message "%s" (buffer-string))))
+              (ert-test-aborted-with-non-local-exit
+               (message "Test %S aborted with non-local exit"
+                        (ert-test-name test)))))
+          (let* ((max (prin1-to-string (length (ert--stats-tests stats))))
+                 (format-string (concat "%9s  %"
+                                        (prin1-to-string (length max))
+                                        "s/" max "  %S")))
+            (message format-string
+                     (ert-string-for-test-result result
+                                                 (ert-test-result-expected-p
+                                                  test result))
+                     (1+ (ert--stats-test-pos stats test))
+                     (ert-test-name test)))))))))
+
+;;;###autoload
+(defun ert-run-tests-batch-and-exit (&optional selector)
+  "Like `ert-run-tests-batch', but exits Emacs when done.
+
+The exit status will be 0 if all test results were as expected, 1
+on unexpected results, or 2 if the tool detected an error outside
+of the tests (e.g. invalid SELECTOR or bug in the code that runs
+the tests)."
+  (unwind-protect
+      (let ((stats (ert-run-tests-batch selector)))
+        (kill-emacs (if (zerop (ert-stats-completed-unexpected stats)) 0 1)))
+    (unwind-protect
+        (progn
+          (message "Error running tests")
+          (backtrace))
+      (kill-emacs 2))))
+
+
+;;; Utility functions for load/unload actions.
+
+(defun ert--activate-font-lock-keywords ()
+  "Activate font-lock keywords for some of ERT's symbols."
+  (font-lock-add-keywords
+   nil
+   '(("(\\(\\<ert-deftest\\)\\>\\s *\\(\\sw+\\)?"
+      (1 font-lock-keyword-face nil t)
+      (2 font-lock-function-name-face nil t)))))
+
+(defun* ert--remove-from-list (list-var element &key key test)
+  "Remove ELEMENT from the value of LIST-VAR if present.
+
+This can be used as an inverse of `add-to-list'."
+  (unless key (setq key #'identity))
+  (unless test (setq test #'equal))
+  (setf (symbol-value list-var)
+        (ert--remove* element
+                      (symbol-value list-var)
+                      :key key
+                      :test test)))
+
+
+;;; Some basic interactive functions.
+
+(defun ert-read-test-name (prompt &optional default history
+                                  add-default-to-prompt)
+  "Read the name of a test and return it as a symbol.
+
+Prompt with PROMPT.  If DEFAULT is a valid test name, use it as a
+default.  HISTORY is the history to use; see `completing-read'.
+If ADD-DEFAULT-TO-PROMPT is non-nil, PROMPT will be modified to
+include the default, if any.
+
+Signals an error if no test name was read."
+  (etypecase default
+    (string (let ((symbol (intern-soft default)))
+              (unless (and symbol (ert-test-boundp symbol))
+                (setq default nil))))
+    (symbol (setq default
+                  (if (ert-test-boundp default)
+                      (symbol-name default)
+                    nil)))
+    (ert-test (setq default (ert-test-name default))))
+  (when add-default-to-prompt
+    (setq prompt (if (null default)
+                     (format "%s: " prompt)
+                   (format "%s (default %s): " prompt default))))
+  (let ((input (completing-read prompt obarray #'ert-test-boundp
+                                t nil history default nil)))
+    ;; completing-read returns an empty string if default was nil and
+    ;; the user just hit enter.
+    (let ((sym (intern-soft input)))
+      (if (ert-test-boundp sym)
+          sym
+        (error "Input does not name a test")))))
+
+(defun ert-read-test-name-at-point (prompt)
+  "Read the name of a test and return it as a symbol.
+As a default, use the symbol at point, or the test at point if in
+the ERT results buffer.  Prompt with PROMPT, augmented with the
+default (if any)."
+  (ert-read-test-name prompt (ert-test-at-point) nil t))
+
+(defun ert-find-test-other-window (test-name)
+  "Find, in another window, the definition of TEST-NAME."
+  (interactive (list (ert-read-test-name-at-point "Find test definition: ")))
+  (find-function-do-it test-name 'ert-deftest 'switch-to-buffer-other-window))
+
+(defun ert-delete-test (test-name)
+  "Make the test TEST-NAME unbound.
+
+Nothing more than an interactive interface to `ert-make-test-unbound'."
+  (interactive (list (ert-read-test-name-at-point "Delete test")))
+  (ert-make-test-unbound test-name))
+
+(defun ert-delete-all-tests ()
+  "Make all symbols in `obarray' name no test."
+  (interactive)
+  (when (interactive-p)
+    (unless (y-or-n-p "Delete all tests? ")
+      (error "Aborted")))
+  ;; We can't use `ert-select-tests' here since that gives us only
+  ;; test objects, and going from them back to the test name symbols
+  ;; can fail if the `ert-test' defstruct has been redefined.
+  (mapc #'ert-make-test-unbound (apropos-internal "" #'ert-test-boundp))
+  t)
+
+
+;;; Display of test progress and results.
+
+;; An entry in the results buffer ewoc.  There is one entry per test.
+(defstruct ert--ewoc-entry
+  (test (assert nil))
+  ;; If the result of this test was expected, its ewoc entry is hidden
+  ;; initially.
+  (hidden-p (assert nil))
+  ;; An ewoc entry may be collapsed to hide details such as the error
+  ;; condition.
+  ;;
+  ;; I'm not sure the ability to expand and collapse entries is still
+  ;; a useful feature.
+  (expanded-p t)
+  ;; By default, the ewoc entry presents the error condition with
+  ;; certain limits on how much to print (`print-level',
+  ;; `print-length').  The user can interactively switch to a set of
+  ;; higher limits.
+  (extended-printer-limits-p nil))
+
+;; Variables local to the results buffer.
+
+;; The ewoc.
+(defvar ert--results-ewoc)
+;; The stats object.
+(defvar ert--results-stats)
+;; A string with one character per test.  Each character represents
+;; the result of the corresponding test.  The string is displayed near
+;; the top of the buffer and serves as a progress bar.
+(defvar ert--results-progress-bar-string)
+;; The position where the progress bar button begins.
+(defvar ert--results-progress-bar-button-begin)
+;; The test result listener that updates the buffer when tests are run.
+(defvar ert--results-listener)
+
+(defun ert-insert-test-name-button (test-name)
+  "Insert a button that links to TEST-NAME."
+  (insert-text-button (format "%S" test-name)
+                      :type 'ert--test-name-button
+                      'ert-test-name test-name))
+
+(defun ert--results-format-expected-unexpected (expected unexpected)
+  "Return a string indicating EXPECTED expected results, UNEXPECTED unexpected."
+  (if (zerop unexpected)
+      (format "%s" expected)
+    (format "%s (%s unexpected)" (+ expected unexpected) unexpected)))
+
+(defun ert--results-update-ewoc-hf (ewoc stats)
+  "Update the header and footer of EWOC to show certain information from STATS.
+
+Also sets `ert--results-progress-bar-button-begin'."
+  (let ((run-count (ert-stats-completed stats))
+        (results-buffer (current-buffer))
+        ;; Need to save buffer-local value.
+        (font-lock font-lock-mode))
+    (ewoc-set-hf
+     ewoc
+     ;; header
+     (with-temp-buffer
+       (insert "Selector: ")
+       (ert--insert-human-readable-selector (ert--stats-selector stats))
+       (insert "\n")
+       (insert
+        (format (concat "Passed: %s\n"
+                        "Failed: %s\n"
+                        "Total:  %s/%s\n\n")
+                (ert--results-format-expected-unexpected
+                 (ert--stats-passed-expected stats)
+                 (ert--stats-passed-unexpected stats))
+                (ert--results-format-expected-unexpected
+                 (ert--stats-failed-expected stats)
+                 (ert--stats-failed-unexpected stats))
+                run-count
+                (ert-stats-total stats)))
+       (insert
+        (format "Started at:   %s\n"
+                (ert--format-time-iso8601 (ert--stats-start-time stats))))
+       ;; FIXME: This is ugly.  Need to properly define invariants of
+       ;; the `stats' data structure.
+       (let ((state (cond ((ert--stats-aborted-p stats) 'aborted)
+                          ((ert--stats-current-test stats) 'running)
+                          ((ert--stats-end-time stats) 'finished)
+                          (t 'preparing))))
+         (ecase state
+           (preparing
+            (insert ""))
+           (aborted
+            (cond ((ert--stats-current-test stats)
+                   (insert "Aborted during test: ")
+                   (ert-insert-test-name-button
+                    (ert-test-name (ert--stats-current-test stats))))
+                  (t
+                   (insert "Aborted."))))
+           (running
+            (assert (ert--stats-current-test stats))
+            (insert "Running test: ")
+            (ert-insert-test-name-button (ert-test-name
+                                          (ert--stats-current-test stats))))
+           (finished
+            (assert (not (ert--stats-current-test stats)))
+            (insert "Finished.")))
+         (insert "\n")
+         (if (ert--stats-end-time stats)
+             (insert
+              (format "%s%s\n"
+                      (if (ert--stats-aborted-p stats)
+                          "Aborted at:   "
+                        "Finished at:  ")
+                      (ert--format-time-iso8601 (ert--stats-end-time stats))))
+           (insert "\n"))
+         (insert "\n"))
+       (let ((progress-bar-string (with-current-buffer results-buffer
+                                    ert--results-progress-bar-string)))
+         (let ((progress-bar-button-begin
+                (insert-text-button progress-bar-string
+                                    :type 'ert--results-progress-bar-button
+                                    'face (or (and font-lock
+                                                   (ert-face-for-stats stats))
+                                              'button))))
+           ;; The header gets copied verbatim to the results buffer,
+           ;; and all positions remain the same, so
+           ;; `progress-bar-button-begin' will be the right position
+           ;; even in the results buffer.
+           (with-current-buffer results-buffer
+             (set (make-local-variable 'ert--results-progress-bar-button-begin)
+                  progress-bar-button-begin))))
+       (insert "\n\n")
+       (buffer-string))
+     ;; footer
+     ;;
+     ;; We actually want an empty footer, but that would trigger a bug
+     ;; in ewoc, sometimes clearing the entire buffer.  (It's possible
+     ;; that this bug has been fixed since this has been tested; we
+     ;; should test it again.)
+     "\n")))
+
+
+(defvar ert-test-run-redisplay-interval-secs .1
+  "How many seconds ERT should wait between redisplays while running tests.
+
+While running tests, ERT shows the current progress, and this variable
+determines how frequently the progress display is updated.")
+
+(defun ert--results-update-stats-display (ewoc stats)
+  "Update EWOC and the mode line to show data from STATS."
+  ;; TODO(ohler): investigate using `make-progress-reporter'.
+  (ert--results-update-ewoc-hf ewoc stats)
+  (force-mode-line-update)
+  (redisplay t)
+  (setf (ert--stats-next-redisplay stats)
+        (+ (float-time) ert-test-run-redisplay-interval-secs)))
+
+(defun ert--results-update-stats-display-maybe (ewoc stats)
+  "Call `ert--results-update-stats-display' if not called recently.
+
+EWOC and STATS are arguments for `ert--results-update-stats-display'."
+  (when (>= (float-time) (ert--stats-next-redisplay stats))
+    (ert--results-update-stats-display ewoc stats)))
+
+(defun ert--tests-running-mode-line-indicator ()
+  "Return a string for the mode line that shows the test run progress."
+  (let* ((stats ert--current-run-stats)
+         (tests-total (ert-stats-total stats))
+         (tests-completed (ert-stats-completed stats)))
+    (if (>= tests-completed tests-total)
+        (format " ERT(%s/%s,finished)" tests-completed tests-total)
+      (format " ERT(%s/%s):%s"
+              (1+ tests-completed)
+              tests-total
+              (if (null (ert--stats-current-test stats))
+                  "?"
+                (format "%S"
+                        (ert-test-name (ert--stats-current-test stats))))))))
+
+(defun ert--make-xrefs-region (begin end)
+  "Attach cross-references to function names between BEGIN and END.
+
+BEGIN and END specify a region in the current buffer."
+  (save-excursion
+    (save-restriction
+      (narrow-to-region begin (point))
+      ;; Inhibit optimization in `debugger-make-xrefs' that would
+      ;; sometimes insert unrelated backtrace info into our buffer.
+      (let ((debugger-previous-backtrace nil))
+        (debugger-make-xrefs)))))
+
+(defun ert--string-first-line (s)
+  "Return the first line of S, or S if it contains no newlines.
+
+The return value does not include the line terminator."
+  (substring s 0 (ert--string-position ?\n s)))
+
+(defun ert-face-for-test-result (expectedp)
+  "Return a face that shows whether a test result was expected or unexpected.
+
+If EXPECTEDP is nil, returns the face for unexpected results; if
+non-nil, returns the face for expected results.."
+  (if expectedp 'ert-test-result-expected 'ert-test-result-unexpected))
+
+(defun ert-face-for-stats (stats)
+  "Return a face that represents STATS."
+  (cond ((ert--stats-aborted-p stats) 'nil)
+        ((plusp (ert-stats-completed-unexpected stats))
+         (ert-face-for-test-result nil))
+        ((eql (ert-stats-completed-expected stats) (ert-stats-total stats))
+         (ert-face-for-test-result t))
+        (t 'nil)))
+
+(defun ert--print-test-for-ewoc (entry)
+  "The ewoc print function for ewoc test entries.  ENTRY is the entry to print."
+  (let* ((test (ert--ewoc-entry-test entry))
+         (stats ert--results-stats)
+         (result (let ((pos (ert--stats-test-pos stats test)))
+                   (assert pos)
+                   (aref (ert--stats-test-results stats) pos)))
+         (hiddenp (ert--ewoc-entry-hidden-p entry))
+         (expandedp (ert--ewoc-entry-expanded-p entry))
+         (extended-printer-limits-p (ert--ewoc-entry-extended-printer-limits-p
+                                     entry)))
+    (cond (hiddenp)
+          (t
+           (let ((expectedp (ert-test-result-expected-p test result)))
+             (insert-text-button (format "%c" (ert-char-for-test-result
+                                               result expectedp))
+                                 :type 'ert--results-expand-collapse-button
+                                 'face (or (and font-lock-mode
+                                                (ert-face-for-test-result
+                                                 expectedp))
+                                           'button)))
+           (insert " ")
+           (ert-insert-test-name-button (ert-test-name test))
+           (insert "\n")
+           (when (and expandedp (not (eql result 'nil)))
+             (when (ert-test-documentation test)
+               (insert "    "
+                       (propertize
+                        (ert--string-first-line (ert-test-documentation test))
+                        'font-lock-face 'font-lock-doc-face)
+                       "\n"))
+             (etypecase result
+               (ert-test-passed
+                (if (ert-test-result-expected-p test result)
+                    (insert "    passed\n")
+                  (insert "    passed unexpectedly\n"))
+                (insert ""))
+               (ert-test-result-with-condition
+                (ert--insert-infos result)
+                (let ((print-escape-newlines t)
+                      (print-level (if extended-printer-limits-p 12 6))
+                      (print-length (if extended-printer-limits-p 100 10)))
+                  (insert "    ")
+                  (let ((begin (point)))
+                    (ert--pp-with-indentation-and-newline
+                     (ert-test-result-with-condition-condition result))
+                    (ert--make-xrefs-region begin (point)))))
+               (ert-test-aborted-with-non-local-exit
+                (insert "    aborted\n")))
+             (insert "\n")))))
+  nil)
+
+(defun ert--results-font-lock-function (enabledp)
+  "Redraw the ERT results buffer after font-lock-mode was switched on or off.
+
+ENABLEDP is true if font-lock-mode is switched on, false
+otherwise."
+  (ert--results-update-ewoc-hf ert--results-ewoc ert--results-stats)
+  (ewoc-refresh ert--results-ewoc)
+  (font-lock-default-function enabledp))
+
+(defun ert--setup-results-buffer (stats listener buffer-name)
+  "Set up a test results buffer.
+
+STATS is the stats object; LISTENER is the results listener;
+BUFFER-NAME, if non-nil, is the buffer name to use."
+  (unless buffer-name (setq buffer-name "*ert*"))
+  (let ((buffer (get-buffer-create buffer-name)))
+    (with-current-buffer buffer
+      (setq buffer-read-only t)
+      (let ((inhibit-read-only t))
+        (buffer-disable-undo)
+        (erase-buffer)
+        (ert-results-mode)
+        ;; Erase buffer again in case switching out of the previous
+        ;; mode inserted anything.  (This happens e.g. when switching
+        ;; from ert-results-mode to ert-results-mode when
+        ;; font-lock-mode turns itself off in change-major-mode-hook.)
+        (erase-buffer)
+        (set (make-local-variable 'font-lock-function)
+             'ert--results-font-lock-function)
+        (let ((ewoc (ewoc-create 'ert--print-test-for-ewoc nil nil t)))
+          (set (make-local-variable 'ert--results-ewoc) ewoc)
+          (set (make-local-variable 'ert--results-stats) stats)
+          (set (make-local-variable 'ert--results-progress-bar-string)
+               (make-string (ert-stats-total stats)
+                            (ert-char-for-test-result nil t)))
+          (set (make-local-variable 'ert--results-listener) listener)
+          (loop for test across (ert--stats-tests stats) do
+                (ewoc-enter-last ewoc
+                                 (make-ert--ewoc-entry :test test :hidden-p t)))
+          (ert--results-update-ewoc-hf ert--results-ewoc ert--results-stats)
+          (goto-char (1- (point-max)))
+          buffer)))))
+
+
+(defvar ert--selector-history nil
+  "List of recent test selectors read from terminal.")
+
+;; Should OUTPUT-BUFFER-NAME and MESSAGE-FN really be arguments here?
+;; They are needed only for our automated self-tests at the moment.
+;; Or should there be some other mechanism?
+;;;###autoload
+(defun ert-run-tests-interactively (selector
+                                    &optional output-buffer-name message-fn)
+  "Run the tests specified by SELECTOR and display the results in a buffer.
+
+SELECTOR works as described in `ert-select-tests'.
+OUTPUT-BUFFER-NAME and MESSAGE-FN should normally be nil; they
+are used for automated self-tests and specify which buffer to use
+and how to display message."
+  (interactive
+   (list (let ((default (if ert--selector-history
+                            ;; Can't use `first' here as this form is
+                            ;; not compiled, and `first' is not
+                            ;; defined without cl.
+                            (car ert--selector-history)
+                          "t")))
+           (read-from-minibuffer (if (null default)
+                                     "Run tests: "
+                                   (format "Run tests (default %s): " default))
+                                 nil nil t 'ert--selector-history
+                                 default nil))
+         nil))
+  (unless message-fn (setq message-fn 'message))
+  (lexical-let ((output-buffer-name output-buffer-name)
+                buffer
+                listener
+                (message-fn message-fn))
+    (setq listener
+          (lambda (event-type &rest event-args)
+            (ecase event-type
+              (run-started
+               (destructuring-bind (stats) event-args
+                 (setq buffer (ert--setup-results-buffer stats
+                                                         listener
+                                                         output-buffer-name))
+                 (pop-to-buffer buffer)))
+              (run-ended
+               (destructuring-bind (stats abortedp) event-args
+                 (funcall message-fn
+                          "%sRan %s tests, %s results were as expected%s"
+                          (if (not abortedp)
+                              ""
+                            "Aborted: ")
+                          (ert-stats-total stats)
+                          (ert-stats-completed-expected stats)
+                          (let ((unexpected
+                                 (ert-stats-completed-unexpected stats)))
+                            (if (zerop unexpected)
+                                ""
+                              (format ", %s unexpected" unexpected))))
+                 (ert--results-update-stats-display (with-current-buffer buffer
+                                                      ert--results-ewoc)
+                                                    stats)))
+              (test-started
+               (destructuring-bind (stats test) event-args
+                 (with-current-buffer buffer
+                   (let* ((ewoc ert--results-ewoc)
+                          (pos (ert--stats-test-pos stats test))
+                          (node (ewoc-nth ewoc pos)))
+                     (assert node)
+                     (setf (ert--ewoc-entry-test (ewoc-data node)) test)
+                     (aset ert--results-progress-bar-string pos
+                           (ert-char-for-test-result nil t))
+                     (ert--results-update-stats-display-maybe ewoc stats)
+                     (ewoc-invalidate ewoc node)))))
+              (test-ended
+               (destructuring-bind (stats test result) event-args
+                 (with-current-buffer buffer
+                   (let* ((ewoc ert--results-ewoc)
+                          (pos (ert--stats-test-pos stats test))
+                          (node (ewoc-nth ewoc pos)))
+                     (when (ert--ewoc-entry-hidden-p (ewoc-data node))
+                       (setf (ert--ewoc-entry-hidden-p (ewoc-data node))
+                             (ert-test-result-expected-p test result)))
+                     (aset ert--results-progress-bar-string pos
+                           (ert-char-for-test-result result
+                                                     (ert-test-result-expected-p
+                                                      test result)))
+                     (ert--results-update-stats-display-maybe ewoc stats)
+                     (ewoc-invalidate ewoc node))))))))
+    (ert-run-tests
+     selector
+     listener)))
+;;;###autoload
+(defalias 'ert 'ert-run-tests-interactively)
+
+
+;;; Simple view mode for auxiliary information like stack traces or
+;;; messages.  Mainly binds "q" for quit.
+
+(define-derived-mode ert-simple-view-mode fundamental-mode "ERT-View"
+  "Major mode for viewing auxiliary information in ERT.")
+
+(loop for (key binding) in
+      '(("q" quit-window)
+        )
+      do
+      (define-key ert-simple-view-mode-map key binding))
+
+
+;;; Commands and button actions for the results buffer.
+
+(define-derived-mode ert-results-mode fundamental-mode "ERT-Results"
+  "Major mode for viewing results of ERT test runs.")
+
+(loop for (key binding) in
+      '(;; Stuff that's not in the menu.
+        ("\t" forward-button)
+        ([backtab] backward-button)
+        ("j" ert-results-jump-between-summary-and-result)
+        ("q" quit-window)
+        ("L" ert-results-toggle-printer-limits-for-test-at-point)
+        ("n" ert-results-next-test)
+        ("p" ert-results-previous-test)
+        ;; Stuff that is in the menu.
+        ("R" ert-results-rerun-all-tests)
+        ("r" ert-results-rerun-test-at-point)
+        ("d" ert-results-rerun-test-at-point-debugging-errors)
+        ("." ert-results-find-test-at-point-other-window)
+        ("b" ert-results-pop-to-backtrace-for-test-at-point)
+        ("m" ert-results-pop-to-messages-for-test-at-point)
+        ("l" ert-results-pop-to-should-forms-for-test-at-point)
+        ("h" ert-results-describe-test-at-point)
+        ("D" ert-delete-test)
+        ("T" ert-results-pop-to-timings)
+        )
+      do
+      (define-key ert-results-mode-map key binding))
+
+(easy-menu-define ert-results-mode-menu ert-results-mode-map
+  "Menu for `ert-results-mode'."
+  '("ERT Results"
+    ["Re-run all tests" ert-results-rerun-all-tests]
+    "--"
+    ["Re-run test" ert-results-rerun-test-at-point]
+    ["Debug test" ert-results-rerun-test-at-point-debugging-errors]
+    ["Show test definition" ert-results-find-test-at-point-other-window]
+    "--"
+    ["Show backtrace" ert-results-pop-to-backtrace-for-test-at-point]
+    ["Show messages" ert-results-pop-to-messages-for-test-at-point]
+    ["Show `should' forms" ert-results-pop-to-should-forms-for-test-at-point]
+    ["Describe test" ert-results-describe-test-at-point]
+    "--"
+    ["Delete test" ert-delete-test]
+    "--"
+    ["Show execution time of each test" ert-results-pop-to-timings]
+    ))
+
+(define-button-type 'ert--results-progress-bar-button
+  'action #'ert--results-progress-bar-button-action
+  'help-echo "mouse-2, RET: Reveal test result")
+
+(define-button-type 'ert--test-name-button
+  'action #'ert--test-name-button-action
+  'help-echo "mouse-2, RET: Find test definition")
+
+(define-button-type 'ert--results-expand-collapse-button
+  'action #'ert--results-expand-collapse-button-action
+  'help-echo "mouse-2, RET: Expand/collapse test result")
+
+(defun ert--results-test-node-or-null-at-point ()
+  "If point is on a valid ewoc node, return it; return nil otherwise.
+
+To be used in the ERT results buffer."
+  (let* ((ewoc ert--results-ewoc)
+         (node (ewoc-locate ewoc)))
+    ;; `ewoc-locate' will return an arbitrary node when point is on
+    ;; header or footer, or when all nodes are invisible.  So we need
+    ;; to validate its return value here.
+    ;;
+    ;; Update: I'm seeing nil being returned in some cases now,
+    ;; perhaps this has been changed?
+    (if (and node
+             (>= (point) (ewoc-location node))
+             (not (ert--ewoc-entry-hidden-p (ewoc-data node))))
+        node
+      nil)))
+
+(defun ert--results-test-node-at-point ()
+  "If point is on a valid ewoc node, return it; signal an error otherwise.
+
+To be used in the ERT results buffer."
+  (or (ert--results-test-node-or-null-at-point)
+      (error "No test at point")))
+
+(defun ert-results-next-test ()
+  "Move point to the next test.
+
+To be used in the ERT results buffer."
+  (interactive)
+  (ert--results-move (ewoc-locate ert--results-ewoc) 'ewoc-next
+                     "No tests below"))
+
+(defun ert-results-previous-test ()
+  "Move point to the previous test.
+
+To be used in the ERT results buffer."
+  (interactive)
+  (ert--results-move (ewoc-locate ert--results-ewoc) 'ewoc-prev
+                     "No tests above"))
+
+(defun ert--results-move (node ewoc-fn error-message)
+  "Move point from NODE to the previous or next node.
+
+EWOC-FN specifies the direction and should be either `ewoc-prev'
+or `ewoc-next'.  If there are no more nodes in that direction, an
+error is signalled with the message ERROR-MESSAGE."
+  (loop
+   (setq node (funcall ewoc-fn ert--results-ewoc node))
+   (when (null node)
+     (error "%s" error-message))
+   (unless (ert--ewoc-entry-hidden-p (ewoc-data node))
+     (goto-char (ewoc-location node))
+     (return))))
+
+(defun ert--results-expand-collapse-button-action (button)
+  "Expand or collapse the test node BUTTON belongs to."
+  (let* ((ewoc ert--results-ewoc)
+         (node (save-excursion
+                 (goto-char (ert--button-action-position))
+                 (ert--results-test-node-at-point)))
+         (entry (ewoc-data node)))
+    (setf (ert--ewoc-entry-expanded-p entry)
+          (not (ert--ewoc-entry-expanded-p entry)))
+    (ewoc-invalidate ewoc node)))
+
+(defun ert-results-find-test-at-point-other-window ()
+  "Find the definition of the test at point in another window.
+
+To be used in the ERT results buffer."
+  (interactive)
+  (let ((name (ert-test-at-point)))
+    (unless name
+      (error "No test at point"))
+    (ert-find-test-other-window name)))
+
+(defun ert--test-name-button-action (button)
+  "Find the definition of the test BUTTON belongs to, in another window."
+  (let ((name (button-get button 'ert-test-name)))
+    (ert-find-test-other-window name)))
+
+(defun ert--ewoc-position (ewoc node)
+  ;; checkdoc-order: nil
+  "Return the position of NODE in EWOC, or nil if NODE is not in EWOC."
+  (loop for i from 0
+        for node-here = (ewoc-nth ewoc 0) then (ewoc-next ewoc node-here)
+        do (when (eql node node-here)
+             (return i))
+        finally (return nil)))
+
+(defun ert-results-jump-between-summary-and-result ()
+  "Jump back and forth between the test run summary and individual test results.
+
+From an ewoc node, jumps to the character that represents the
+same test in the progress bar, and vice versa.
+
+To be used in the ERT results buffer."
+  ;; Maybe this command isn't actually needed much, but if it is, it
+  ;; seems like an indication that the UI design is not optimal.  If
+  ;; jumping back and forth between a summary at the top of the buffer
+  ;; and the error log in the remainder of the buffer is useful, then
+  ;; the summary apparently needs to be easily accessible from the
+  ;; error log, and perhaps it would be better to have it in a
+  ;; separate buffer to keep it visible.
+  (interactive)
+  (let ((ewoc ert--results-ewoc)
+        (progress-bar-begin ert--results-progress-bar-button-begin))
+    (cond ((ert--results-test-node-or-null-at-point)
+           (let* ((node (ert--results-test-node-at-point))
+                  (pos (ert--ewoc-position ewoc node)))
+             (goto-char (+ progress-bar-begin pos))))
+          ((and (<= progress-bar-begin (point))
+                (< (point) (button-end (button-at progress-bar-begin))))
+           (let* ((node (ewoc-nth ewoc (- (point) progress-bar-begin)))
+                  (entry (ewoc-data node)))
+             (when (ert--ewoc-entry-hidden-p entry)
+               (setf (ert--ewoc-entry-hidden-p entry) nil)
+               (ewoc-invalidate ewoc node))
+             (ewoc-goto-node ewoc node)))
+          (t
+           (goto-char progress-bar-begin)))))
+
+(defun ert-test-at-point ()
+  "Return the name of the test at point as a symbol, or nil if none."
+  (or (and (eql major-mode 'ert-results-mode)
+           (let ((test (ert--results-test-at-point-no-redefinition)))
+             (and test (ert-test-name test))))
+      (let* ((thing (thing-at-point 'symbol))
+             (sym (intern-soft thing)))
+        (and (ert-test-boundp sym)
+             sym))))
+
+(defun ert--results-test-at-point-no-redefinition ()
+  "Return the test at point, or nil.
+
+To be used in the ERT results buffer."
+  (assert (eql major-mode 'ert-results-mode))
+  (if (ert--results-test-node-or-null-at-point)
+      (let* ((node (ert--results-test-node-at-point))
+             (test (ert--ewoc-entry-test (ewoc-data node))))
+        test)
+    (let ((progress-bar-begin ert--results-progress-bar-button-begin))
+      (when (and (<= progress-bar-begin (point))
+                 (< (point) (button-end (button-at progress-bar-begin))))
+        (let* ((test-index (- (point) progress-bar-begin))
+               (test (aref (ert--stats-tests ert--results-stats)
+                           test-index)))
+          test)))))
+
+(defun ert--results-test-at-point-allow-redefinition ()
+  "Look up the test at point, and check whether it has been redefined.
+
+To be used in the ERT results buffer.
+
+Returns a list of two elements: the test (or nil) and a symbol
+specifying whether the test has been redefined.
+
+If a new test has been defined with the same name as the test at
+point, replaces the test at point with the new test, and returns
+the new test and the symbol `redefined'.
+
+If the test has been deleted, returns the old test and the symbol
+`deleted'.
+
+If the test is still current, returns the test and the symbol nil.
+
+If there is no test at point, returns a list with two nils."
+  (let ((test (ert--results-test-at-point-no-redefinition)))
+    (cond ((null test)
+           `(nil nil))
+          ((null (ert-test-name test))
+           `(,test nil))
+          (t
+           (let* ((name (ert-test-name test))
+                  (new-test (and (ert-test-boundp name)
+                                 (ert-get-test name))))
+             (cond ((eql test new-test)
+                    `(,test nil))
+                   ((null new-test)
+                    `(,test deleted))
+                   (t
+                    (ert--results-update-after-test-redefinition
+                     (ert--stats-test-pos ert--results-stats test)
+                     new-test)
+                    `(,new-test redefined))))))))
+
+(defun ert--results-update-after-test-redefinition (pos new-test)
+  "Update results buffer after the test at pos POS has been redefined.
+
+Also updates the stats object.  NEW-TEST is the new test
+definition."
+  (let* ((stats ert--results-stats)
+         (ewoc ert--results-ewoc)
+         (node (ewoc-nth ewoc pos))
+         (entry (ewoc-data node)))
+    (ert--stats-set-test-and-result stats pos new-test nil)
+    (setf (ert--ewoc-entry-test entry) new-test
+          (aref ert--results-progress-bar-string pos) (ert-char-for-test-result
+                                                       nil t))
+    (ewoc-invalidate ewoc node))
+  nil)
+
+(defun ert--button-action-position ()
+  "The buffer position where the last button action was triggered."
+  (cond ((integerp last-command-event)
+         (point))
+        ((eventp last-command-event)
+         (posn-point (event-start last-command-event)))
+        (t (assert nil))))
+
+(defun ert--results-progress-bar-button-action (button)
+  "Jump to details for the test represented by the character clicked in BUTTON."
+  (goto-char (ert--button-action-position))
+  (ert-results-jump-between-summary-and-result))
+
+(defun ert-results-rerun-all-tests ()
+  "Re-run all tests, using the same selector.
+
+To be used in the ERT results buffer."
+  (interactive)
+  (assert (eql major-mode 'ert-results-mode))
+  (let ((selector (ert--stats-selector ert--results-stats)))
+    (ert-run-tests-interactively selector (buffer-name))))
+
+(defun ert-results-rerun-test-at-point ()
+  "Re-run the test at point.
+
+To be used in the ERT results buffer."
+  (interactive)
+  (destructuring-bind (test redefinition-state)
+      (ert--results-test-at-point-allow-redefinition)
+    (when (null test)
+      (error "No test at point"))
+    (let* ((stats ert--results-stats)
+           (progress-message (format "Running %stest %S"
+                                     (ecase redefinition-state
+                                       ((nil) "")
+                                       (redefined "new definition of ")
+                                       (deleted "deleted "))
+                                     (ert-test-name test))))
+      ;; Need to save and restore point manually here: When point is on
+      ;; the first visible ewoc entry while the header is updated, point
+      ;; moves to the top of the buffer.  This is undesirable, and a
+      ;; simple `save-excursion' doesn't prevent it.
+      (let ((point (point)))
+        (unwind-protect
+            (unwind-protect
+                (progn
+                  (message "%s..." progress-message)
+                  (ert-run-or-rerun-test stats test
+                                         ert--results-listener))
+              (ert--results-update-stats-display ert--results-ewoc stats)
+              (message "%s...%s"
+                       progress-message
+                       (let ((result (ert-test-most-recent-result test)))
+                         (ert-string-for-test-result
+                          result (ert-test-result-expected-p test result)))))
+          (goto-char point))))))
+
+(defun ert-results-rerun-test-at-point-debugging-errors ()
+  "Re-run the test at point with `ert-debug-on-error' bound to t.
+
+To be used in the ERT results buffer."
+  (interactive)
+  (let ((ert-debug-on-error t))
+    (ert-results-rerun-test-at-point)))
+
+(defun ert-results-pop-to-backtrace-for-test-at-point ()
+  "Display the backtrace for the test at point.
+
+To be used in the ERT results buffer."
+  (interactive)
+  (let* ((test (ert--results-test-at-point-no-redefinition))
+         (stats ert--results-stats)
+         (pos (ert--stats-test-pos stats test))
+         (result (aref (ert--stats-test-results stats) pos)))
+    (etypecase result
+      (ert-test-passed (error "Test passed, no backtrace available"))
+      (ert-test-result-with-condition
+       (let ((backtrace (ert-test-result-with-condition-backtrace result))
+             (buffer (get-buffer-create "*ERT Backtrace*")))
+         (pop-to-buffer buffer)
+         (setq buffer-read-only t)
+         (let ((inhibit-read-only t))
+           (buffer-disable-undo)
+           (erase-buffer)
+           (ert-simple-view-mode)
+           ;; Use unibyte because `debugger-setup-buffer' also does so.
+           (set-buffer-multibyte nil)
+           (setq truncate-lines t)
+           (ert--print-backtrace backtrace)
+           (debugger-make-xrefs)
+           (goto-char (point-min))
+           (insert "Backtrace for test `")
+           (ert-insert-test-name-button (ert-test-name test))
+           (insert "':\n")))))))
+
+(defun ert-results-pop-to-messages-for-test-at-point ()
+  "Display the part of the *Messages* buffer generated during the test at point.
+
+To be used in the ERT results buffer."
+  (interactive)
+  (let* ((test (ert--results-test-at-point-no-redefinition))
+         (stats ert--results-stats)
+         (pos (ert--stats-test-pos stats test))
+         (result (aref (ert--stats-test-results stats) pos)))
+    (let ((buffer (get-buffer-create "*ERT Messages*")))
+      (pop-to-buffer buffer)
+      (setq buffer-read-only t)
+      (let ((inhibit-read-only t))
+        (buffer-disable-undo)
+        (erase-buffer)
+        (ert-simple-view-mode)
+        (insert (ert-test-result-messages result))
+        (goto-char (point-min))
+        (insert "Messages for test `")
+        (ert-insert-test-name-button (ert-test-name test))
+        (insert "':\n")))))
+
+(defun ert-results-pop-to-should-forms-for-test-at-point ()
+  "Display the list of `should' forms executed during the test at point.
+
+To be used in the ERT results buffer."
+  (interactive)
+  (let* ((test (ert--results-test-at-point-no-redefinition))
+         (stats ert--results-stats)
+         (pos (ert--stats-test-pos stats test))
+         (result (aref (ert--stats-test-results stats) pos)))
+    (let ((buffer (get-buffer-create "*ERT list of should forms*")))
+      (pop-to-buffer buffer)
+      (setq buffer-read-only t)
+      (let ((inhibit-read-only t))
+        (buffer-disable-undo)
+        (erase-buffer)
+        (ert-simple-view-mode)
+        (if (null (ert-test-result-should-forms result))
+            (insert "\n(No should forms during this test.)\n")
+          (loop for form-description in (ert-test-result-should-forms result)
+                for i from 1 do
+                (insert "\n")
+                (insert (format "%s: " i))
+                (let ((begin (point)))
+                  (ert--pp-with-indentation-and-newline form-description)
+                  (ert--make-xrefs-region begin (point)))))
+        (goto-char (point-min))
+        (insert "`should' forms executed during test `")
+        (ert-insert-test-name-button (ert-test-name test))
+        (insert "':\n")
+        (insert "\n")
+        (insert (concat "(Values are shallow copies and may have "
+                        "looked different during the test if they\n"
+                        "have been modified destructively.)\n"))
+        (forward-line 1)))))
+
+(defun ert-results-toggle-printer-limits-for-test-at-point ()
+  "Toggle how much of the condition to print for the test at point.
+
+To be used in the ERT results buffer."
+  (interactive)
+  (let* ((ewoc ert--results-ewoc)
+         (node (ert--results-test-node-at-point))
+         (entry (ewoc-data node)))
+    (setf (ert--ewoc-entry-extended-printer-limits-p entry)
+          (not (ert--ewoc-entry-extended-printer-limits-p entry)))
+    (ewoc-invalidate ewoc node)))
+
+(defun ert-results-pop-to-timings ()
+  "Display test timings for the last run.
+
+To be used in the ERT results buffer."
+  (interactive)
+  (let* ((stats ert--results-stats)
+         (start-times (ert--stats-test-start-times stats))
+         (end-times (ert--stats-test-end-times stats))
+         (buffer (get-buffer-create "*ERT timings*"))
+         (data (loop for test across (ert--stats-tests stats)
+                     for start-time across (ert--stats-test-start-times stats)
+                     for end-time across (ert--stats-test-end-times stats)
+                     collect (list test
+                                   (float-time (subtract-time end-time
+                                                              start-time))))))
+    (setq data (sort data (lambda (a b)
+                            (> (second a) (second b)))))
+    (pop-to-buffer buffer)
+    (setq buffer-read-only t)
+    (let ((inhibit-read-only t))
+      (buffer-disable-undo)
+      (erase-buffer)
+      (ert-simple-view-mode)
+      (if (null data)
+          (insert "(No data)\n")
+        (insert (format "%-3s  %8s %8s\n" "" "time" "cumul"))
+        (loop for (test time) in data
+              for cumul-time = time then (+ cumul-time time)
+              for i from 1 do
+              (let ((begin (point)))
+                (insert (format "%3s: %8.3f %8.3f " i time cumul-time))
+                (ert-insert-test-name-button (ert-test-name test))
+                (insert "\n"))))
+      (goto-char (point-min))
+      (insert "Tests by run time (seconds):\n\n")
+      (forward-line 1))))
+
+;;;###autoload
+(defun ert-describe-test (test-or-test-name)
+  "Display the documentation for TEST-OR-TEST-NAME (a symbol or ert-test)."
+  (interactive (list (ert-read-test-name-at-point "Describe test")))
+  (when (< emacs-major-version 24)
+    (error "Requires Emacs 24"))
+  (let (test-name
+        test-definition)
+    (etypecase test-or-test-name
+      (symbol (setq test-name test-or-test-name
+                    test-definition (ert-get-test test-or-test-name)))
+      (ert-test (setq test-name (ert-test-name test-or-test-name)
+                      test-definition test-or-test-name)))
+    (help-setup-xref (list #'ert-describe-test test-or-test-name)
+                     (called-interactively-p 'interactive))
+    (save-excursion
+      (with-help-window (help-buffer)
+        (with-current-buffer (help-buffer)
+          (insert (if test-name (format "%S" test-name) "<anonymous test>"))
+          (insert " is a test")
+          (let ((file-name (and test-name
+                                (symbol-file test-name 'ert-deftest))))
+            (when file-name
+              (insert " defined in `" (file-name-nondirectory file-name) "'")
+              (save-excursion
+                (re-search-backward "`\\([^`']+\\)'" nil t)
+                (help-xref-button 1 'help-function-def test-name file-name)))
+            (insert ".")
+            (fill-region-as-paragraph (point-min) (point))
+            (insert "\n\n")
+            (unless (and (ert-test-boundp test-name)
+                         (eql (ert-get-test test-name) test-definition))
+              (let ((begin (point)))
+                (insert "Note: This test has been redefined or deleted, "
+                        "this documentation refers to an old definition.")
+                (fill-region-as-paragraph begin (point)))
+              (insert "\n\n"))
+            (insert (or (ert-test-documentation test-definition)
+                        "It is not documented.")
+                    "\n")))))))
+
+(defun ert-results-describe-test-at-point ()
+  "Display the documentation of the test at point.
+
+To be used in the ERT results buffer."
+  (interactive)
+  (ert-describe-test (ert--results-test-at-point-no-redefinition)))
+
+
+;;; Actions on load/unload.
+
+(add-to-list 'find-function-regexp-alist '(ert-deftest . ert--find-test-regexp))
+(add-to-list 'minor-mode-alist '(ert--current-run-stats
+                                 (:eval
+                                  (ert--tests-running-mode-line-indicator))))
+(add-to-list 'emacs-lisp-mode-hook 'ert--activate-font-lock-keywords)
+
+(defun ert--unload-function ()
+  "Unload function to undo the side-effects of loading ert.el."
+  (ert--remove-from-list 'find-function-regexp-alist 'ert-deftest :key #'car)
+  (ert--remove-from-list 'minor-mode-alist 'ert--current-run-stats :key #'car)
+  (ert--remove-from-list 'emacs-lisp-mode-hook
+                         'ert--activate-font-lock-keywords)
+  nil)
+
+(defvar ert-unload-hook '())
+(add-hook 'ert-unload-hook 'ert--unload-function)
+
+
+(provide 'ert)
+
+;;; ert.el ends here
diff --git a/lisp/emacs-lisp/ewoc.el b/lisp/emacs-lisp/ewoc.el
index 56183fb91c8..bf9998695ee 100644
--- a/lisp/emacs-lisp/ewoc.el
+++ b/lisp/emacs-lisp/ewoc.el
@@ -1,7 +1,6 @@
 ;;; ewoc.el --- utility to maintain a view of a list of objects in a buffer
 
-;; Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
-;;   2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+;; Copyright (C) 1991-2011 Free Software Foundation, Inc.
 
 ;; Author: Per Cederqvist <ceder@lysator.liu.se>
 ;;	Inge Wallin <inge@lysator.liu.se>
@@ -578,5 +577,4 @@ Return nil if the buffer has been deleted."
 ;; eval: (put 'ewoc--set-buffer-bind-dll-let* 'lisp-indent-hook 2)
 ;; End:
 
-;; arch-tag: d78915b9-9a07-44bf-aac6-04a1fc1bd6d4
 ;;; ewoc.el ends here
diff --git a/lisp/emacs-lisp/find-func.el b/lisp/emacs-lisp/find-func.el
index 9d59337a7c7..9c4a3e9832c 100644
--- a/lisp/emacs-lisp/find-func.el
+++ b/lisp/emacs-lisp/find-func.el
@@ -1,7 +1,6 @@
 ;;; find-func.el --- find the definition of the Emacs Lisp function near point
 
-;; Copyright (C) 1997, 1999, 2001, 2002, 2003, 2004,
-;;   2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+;; Copyright (C) 1997, 1999, 2001-2011 Free Software Foundation, Inc.
 
 ;; Author: Jens Petersen <petersen@kurims.kyoto-u.ac.jp>
 ;; Maintainer: petersen@kurims.kyoto-u.ac.jp
@@ -563,5 +562,4 @@ Set mark before moving, if the buffer already existed."
 
 (provide 'find-func)
 
-;; arch-tag: 43ecd81c-74dc-4d9a-8f63-a61e55670d64
 ;;; find-func.el ends here
diff --git a/lisp/emacs-lisp/find-gc.el b/lisp/emacs-lisp/find-gc.el
index 49d3a7075d4..773b8f11408 100644
--- a/lisp/emacs-lisp/find-gc.el
+++ b/lisp/emacs-lisp/find-gc.el
@@ -1,7 +1,6 @@
 ;;; find-gc.el --- detect functions that call the garbage collector
 
-;; Copyright (C) 1992, 2001, 2002, 2003, 2004, 2005,
-;;   2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+;; Copyright (C) 1992, 2001-2011 Free Software Foundation, Inc.
 
 ;; Maintainer: FSF
 
@@ -159,5 +158,4 @@ Also store it in `find-gc-unsafe'."
 
 (provide 'find-gc)
 
-;; arch-tag: 4a26a538-a008-40d9-a1ef-23bb6dbecef4
 ;;; find-gc.el ends here
diff --git a/lisp/emacs-lisp/float-sup.el b/lisp/emacs-lisp/float-sup.el
index 371fe8af3ad..ceb1eb3bafb 100644
--- a/lisp/emacs-lisp/float-sup.el
+++ b/lisp/emacs-lisp/float-sup.el
@@ -1,7 +1,6 @@
 ;;; float-sup.el --- define some constants useful for floating point numbers.
 
-;; Copyright (C) 1985, 1986, 1987, 2001, 2002, 2003, 2004, 2005, 2006,
-;;   2007, 2008, 2009, 2010  Free Software Foundation, Inc.
+;; Copyright (C) 1985-1987, 2001-2011  Free Software Foundation, Inc.
 
 ;; Maintainer: FSF
 ;; Keywords: internal
diff --git a/lisp/emacs-lisp/generic.el b/lisp/emacs-lisp/generic.el
index 51b23c3f402..770fe01f91c 100644
--- a/lisp/emacs-lisp/generic.el
+++ b/lisp/emacs-lisp/generic.el
@@ -1,7 +1,6 @@
 ;;; generic.el --- defining simple major modes with comment and font-lock
 ;;
-;; Copyright (C) 1997, 1999, 2001, 2002, 2003, 2004,
-;;   2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+;; Copyright (C) 1997, 1999, 2001-2011 Free Software Foundation, Inc.
 ;;
 ;; Author:  Peter Breton <pbreton@cs.umb.edu>
 ;; Created: Fri Sep 27 1996
@@ -316,5 +315,4 @@ regular expression that can be used as an element of
 
 (provide 'generic)
 
-;; arch-tag: 239c1fc4-1303-48d9-9ac0-657d655669ea
 ;;; generic.el ends here
diff --git a/lisp/emacs-lisp/gulp.el b/lisp/emacs-lisp/gulp.el
index 9c88ba7111e..eca5470fd69 100644
--- a/lisp/emacs-lisp/gulp.el
+++ b/lisp/emacs-lisp/gulp.el
@@ -1,7 +1,6 @@
 ;;; gulp.el --- ask for updates for Lisp packages
 
-;; Copyright (C) 1996, 2001, 2002, 2003, 2004, 2005,
-;;   2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+;; Copyright (C) 1996, 2001-2011 Free Software Foundation, Inc.
 
 ;; Author: Sam Shteingold <shteingd@math.ucla.edu>
 ;; Maintainer: FSF
@@ -175,5 +174,4 @@ That is a list of elements, each of the form (MAINTAINER PACKAGES...)."
 
 (provide 'gulp)
 
-;; arch-tag: 42750a11-460a-4efc-829f-342d075530e5
 ;;; gulp.el ends here
diff --git a/lisp/emacs-lisp/helper.el b/lisp/emacs-lisp/helper.el
index 6a597429328..113f5849364 100644
--- a/lisp/emacs-lisp/helper.el
+++ b/lisp/emacs-lisp/helper.el
@@ -1,7 +1,6 @@
 ;;; helper.el --- utility help package supporting help in electric modes
 
-;; Copyright (C) 1985, 2001, 2002, 2003, 2004, 2005,
-;;   2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+;; Copyright (C) 1985, 2001-2011 Free Software Foundation, Inc.
 
 ;; Author: K. Shane Hartman
 ;; Maintainer: FSF
@@ -156,5 +155,4 @@
 
 (provide 'helper)
 
-;; arch-tag: a0984577-d3e9-4124-ae0d-c46fe740f6a9
 ;;; helper.el ends here
diff --git a/lisp/emacs-lisp/lisp-mnt.el b/lisp/emacs-lisp/lisp-mnt.el
index 7df65acb283..4d0cacf4ee1 100644
--- a/lisp/emacs-lisp/lisp-mnt.el
+++ b/lisp/emacs-lisp/lisp-mnt.el
@@ -1,7 +1,6 @@
 ;;; lisp-mnt.el --- utility functions for Emacs Lisp maintainers
 
-;; Copyright (C) 1992, 1994, 1997, 2000, 2001, 2002, 2003, 2004,
-;;   2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+;; Copyright (C) 1992, 1994, 1997, 2000-2011 Free Software Foundation, Inc.
 
 ;; Author: Eric S. Raymond <esr@snark.thyrsus.com>
 ;; Maintainer: FSF
@@ -616,5 +615,4 @@ Prompts for bug subject TOPIC.  Leaves you in a mail buffer."
 
 (provide 'lisp-mnt)
 
-;; arch-tag: fa3c5ab4-a37b-4e46-b7cf-b6d78b90e69e
 ;;; lisp-mnt.el ends here
diff --git a/lisp/emacs-lisp/lisp-mode.el b/lisp/emacs-lisp/lisp-mode.el
index 2cdbd115928..37a86b7135d 100644
--- a/lisp/emacs-lisp/lisp-mode.el
+++ b/lisp/emacs-lisp/lisp-mode.el
@@ -1,7 +1,6 @@
 ;;; lisp-mode.el --- Lisp mode, and its idiosyncratic commands
 
-;; Copyright (C) 1985, 1986, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
-;;   2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+;; Copyright (C) 1985-1986, 1999-2011 Free Software Foundation, Inc.
 
 ;; Maintainer: FSF
 ;; Keywords: lisp, languages
diff --git a/lisp/emacs-lisp/lisp.el b/lisp/emacs-lisp/lisp.el
index d0d1520a677..deb06f52549 100644
--- a/lisp/emacs-lisp/lisp.el
+++ b/lisp/emacs-lisp/lisp.el
@@ -1,7 +1,6 @@
 ;;; lisp.el --- Lisp editing commands for Emacs
 
-;; Copyright (C) 1985, 1986, 1994, 2000, 2001, 2002, 2003, 2004,
-;;   2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+;; Copyright (C) 1985-1986, 1994, 2000-2011 Free Software Foundation, Inc.
 
 ;; Maintainer: FSF
 ;; Keywords: lisp, languages
@@ -690,5 +689,4 @@ considered."
 	      (unless (eq predicate 'fboundp)
 		(lambda (str) (if (fboundp (intern-soft str)) " <f>"))))))))
 
-;; arch-tag: aa7fa8a4-2e6f-4e9b-9cd9-fef06340e67e
 ;;; lisp.el ends here
diff --git a/lisp/emacs-lisp/macroexp.el b/lisp/emacs-lisp/macroexp.el
index 6dfd47b4ad1..af8047256e2 100644
--- a/lisp/emacs-lisp/macroexp.el
+++ b/lisp/emacs-lisp/macroexp.el
@@ -1,6 +1,6 @@
 ;;; macroexp.el --- Additional macro-expansion support
 ;;
-;; Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+;; Copyright (C) 2004-2011 Free Software Foundation, Inc.
 ;;
 ;; Author: Miles Bader <miles@gnu.org>
 ;; Keywords: lisp, compiler, macros
@@ -182,5 +182,4 @@ definitions to shadow the loaded ones for use in file byte-compilation."
 
 (provide 'macroexp)
 
-;; arch-tag: af9b8c24-c196-43bc-91e1-a3570790fa5a
 ;;; macroexp.el ends here
diff --git a/lisp/emacs-lisp/map-ynp.el b/lisp/emacs-lisp/map-ynp.el
index 644482a0d44..6ef26fef89c 100644
--- a/lisp/emacs-lisp/map-ynp.el
+++ b/lisp/emacs-lisp/map-ynp.el
@@ -1,7 +1,6 @@
 ;;; map-ynp.el --- general-purpose boolean question-asker
 
-;; Copyright (C) 1991, 1992, 1993, 1994, 1995, 2000, 2001, 2002, 2003,
-;;   2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+;; Copyright (C) 1991-1995, 2000-2011 Free Software Foundation, Inc.
 
 ;; Author: Roland McGrath <roland@gnu.org>
 ;; Maintainer: FSF
@@ -275,5 +274,4 @@ the current %s and exit."
     ;; Return the number of actions that were taken.
     actions))
 
-;; arch-tag: 1d0a3201-a151-4c10-b231-4da47c9e6dc3
 ;;; map-ynp.el ends here
diff --git a/lisp/emacs-lisp/package-x.el b/lisp/emacs-lisp/package-x.el
index 38c4d5bbe35..b9994be3d39 100644
--- a/lisp/emacs-lisp/package-x.el
+++ b/lisp/emacs-lisp/package-x.el
@@ -1,6 +1,6 @@
 ;;; package-x.el --- Package extras
 
-;; Copyright (C) 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+;; Copyright (C) 2007-2011 Free Software Foundation, Inc.
 
 ;; Author: Tom Tromey <tromey@redhat.com>
 ;; Created: 10 Mar 2007
diff --git a/lisp/emacs-lisp/package.el b/lisp/emacs-lisp/package.el
index fecddcf16ed..59964ff6b96 100644
--- a/lisp/emacs-lisp/package.el
+++ b/lisp/emacs-lisp/package.el
@@ -1,6 +1,6 @@
 ;;; package.el --- Simple package system for Emacs
 
-;; Copyright (C) 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+;; Copyright (C) 2007-2011 Free Software Foundation, Inc.
 
 ;; Author: Tom Tromey <tromey@redhat.com>
 ;; Created: 10 Mar 2007
@@ -1663,15 +1663,15 @@ A value of nil means to display all packages.")
 Optional PACKAGES is a list of names of packages (symbols) to
 list; the default is to display everything in `package-alist'."
   (require 'finder-inf nil t)
-  (with-current-buffer (get-buffer-create "*Packages*")
-    (package-menu-mode)
-    (set (make-local-variable 'package-menu-package-list) packages)
-    (set (make-local-variable 'package-menu-sort-key) nil)
-    (package--generate-package-list)
-    ;; It's okay to use pop-to-buffer here.  The package menu buffer
-    ;; has keybindings, and the user just typed `M-x list-packages',
-    ;; suggesting that they might want to use them.
-    (pop-to-buffer (current-buffer))))
+  (let ((buf (get-buffer-create "*Packages*")))
+    (with-current-buffer buf
+      (package-menu-mode)
+      (set (make-local-variable 'package-menu-package-list) packages)
+      (set (make-local-variable 'package-menu-sort-key) nil)
+      (package--generate-package-list))
+    ;; The package menu buffer has keybindings.  If the user types
+    ;; `M-x list-packages', that suggests it should become current.
+    (switch-to-buffer buf)))
 
 ;;;###autoload
 (defun list-packages ()
diff --git a/lisp/emacs-lisp/pcase.el b/lisp/emacs-lisp/pcase.el
index 5ff26b3dbc0..24ea0a3e801 100644
--- a/lisp/emacs-lisp/pcase.el
+++ b/lisp/emacs-lisp/pcase.el
@@ -1,6 +1,6 @@
 ;;; pcase.el --- ML-style pattern-matching macro for Elisp
 
-;; Copyright (C) 2010  Free Software Foundation, Inc.
+;; Copyright (C) 2010-2011  Free Software Foundation, Inc.
 
 ;; Author: Stefan Monnier <monnier@iro.umontreal.ca>
 ;; Keywords: 
diff --git a/lisp/emacs-lisp/pp.el b/lisp/emacs-lisp/pp.el
index 79c52e9f1e3..2d1b8860a3c 100644
--- a/lisp/emacs-lisp/pp.el
+++ b/lisp/emacs-lisp/pp.el
@@ -1,7 +1,6 @@
 ;;; pp.el --- pretty printer for Emacs Lisp
 
-;; Copyright (C) 1989, 1993, 2001, 2002, 2003, 2004,
-;;   2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+;; Copyright (C) 1989, 1993, 2001-2011 Free Software Foundation, Inc.
 
 ;; Author: Randal Schwartz <merlyn@stonehenge.com>
 ;; Keywords: lisp
@@ -202,5 +201,4 @@ Ignores leading comment characters."
 
 (provide 'pp)				; so (require 'pp) works
 
-;; arch-tag: b0f7c65b-02c7-42bb-9ee3-508a59b8fbb9
 ;;; pp.el ends here
diff --git a/lisp/emacs-lisp/re-builder.el b/lisp/emacs-lisp/re-builder.el
index 1845effd5bb..e3c030b3c60 100644
--- a/lisp/emacs-lisp/re-builder.el
+++ b/lisp/emacs-lisp/re-builder.el
@@ -1,7 +1,6 @@
 ;;; re-builder.el --- building Regexps with visual feedback
 
-;; Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004,
-;;   2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+;; Copyright (C) 1999-2011 Free Software Foundation, Inc.
 
 ;; Author: Detlev Zundel <dzu@gnu.org>
 ;; Keywords: matching, lisp, tools
@@ -60,8 +59,8 @@
 ;; even the auto updates go all the way.  Forcing an update overrides
 ;; this limit allowing an easy way to see all matches.
 
-;; Currently `re-builder' understands five different forms of input,
-;; namely `read', `string', `rx', and `sregex' syntax.  Read
+;; Currently `re-builder' understands three different forms of input,
+;; namely `read', `string', and `rx' syntax.  Read
 ;; syntax and string syntax are both delimited by `"'s and behave
 ;; according to their name.  With the `string' syntax there's no need
 ;; to escape the backslashes and double quotes simplifying the editing
@@ -75,7 +74,7 @@
 ;; When editing a symbolic regular expression, only the first
 ;; expression in the RE Builder buffer is considered, which helps
 ;; limiting the extent of the expression like the `"'s do for the text
-;; modes.  For the `sregex' syntax the function `sregex' is applied to
+;; modes.  For the `rx' syntax the function `rx-to-string' is applied to
 ;; the evaluated expression read.  So you can use quoted arguments
 ;; with something like '("findme") or you can construct arguments to
 ;; your hearts delight with a valid ELisp expression.  (The compiled
@@ -126,11 +125,10 @@
 
 (defcustom reb-re-syntax 'read
   "Syntax for the REs in the RE Builder.
-Can either be `read', `string', `sregex', or `rx'."
+Can either be `read', `string', or `rx'."
   :group 're-builder
   :type '(choice (const :tag "Read syntax" read)
 		 (const :tag "String syntax" string)
-		 (const :tag "`sregex' syntax" sregex)
 		 (const :tag "`rx' syntax" rx)))
 
 (defcustom reb-auto-match-limit 200
@@ -244,7 +242,9 @@ Except for Lisp syntax this is the same as `reb-regexp'.")
 		  :help "Quit the RE Builder mode"))
     (define-key menu-map [rt]
       '(menu-item "Case sensitive" reb-toggle-case
-		  :button (:toggle . case-fold-search)
+		  :button (:toggle . (with-current-buffer
+					 reb-target-buffer
+				       (null case-fold-search)))
 		  :help "Toggle case sensitivity of searches for RE Builder target buffer"))
     (define-key menu-map [rb]
       '(menu-item "Change target buffer..." reb-change-target-buffer
@@ -279,10 +279,8 @@ Except for Lisp syntax this is the same as `reb-regexp'.")
   emacs-lisp-mode "RE Builder Lisp"
   "Major mode for interactively building symbolic Regular Expressions."
   ;; Pull in packages as needed
-  (cond	((eq reb-re-syntax 'sregex)	; sregex is not autoloaded
-	 (require 'sregex))		; right now..
-	((eq reb-re-syntax 'rx)		; rx-to-string is autoloaded
-	 (require 'rx)))		; require rx anyway
+  (cond	((memq reb-re-syntax '(sregex rx)) ; rx-to-string is autoloaded
+	 (require 'rx)))                   ; require rx anyway
   (reb-mode-common))
 
 ;; Use the same "\C-c" keymap as `reb-mode' and use font-locking from
@@ -612,9 +610,7 @@ optional fourth argument FORCE is non-nil."
 
 (defun reb-cook-regexp (re)
   "Return RE after processing it according to `reb-re-syntax'."
-  (cond ((eq reb-re-syntax 'sregex)
-	 (apply 'sregex (eval (car (read-from-string re)))))
-	((eq reb-re-syntax 'rx)
+  (cond ((memq reb-re-syntax '(sregex rx))
 	 (rx-to-string (eval (car (read-from-string re)))))
 	(t re)))
 
@@ -718,5 +714,4 @@ If SUBEXP is non-nil mark only the corresponding sub-expressions."
 
 (provide 're-builder)
 
-;; arch-tag: 5c5515ac-4085-4524-a421-033f44f032e7
 ;;; re-builder.el ends here
diff --git a/lisp/emacs-lisp/regexp-opt.el b/lisp/emacs-lisp/regexp-opt.el
index 116d7b93d90..b538a7a2943 100644
--- a/lisp/emacs-lisp/regexp-opt.el
+++ b/lisp/emacs-lisp/regexp-opt.el
@@ -1,7 +1,6 @@
 ;;; regexp-opt.el --- generate efficient regexps to match strings
 
-;; Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
-;;   2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+;; Copyright (C) 1994-2011 Free Software Foundation, Inc.
 
 ;; Author: Simon Marshall <simon@gnu.org>
 ;; Maintainer: FSF
@@ -293,5 +292,4 @@ Merges keywords to avoid backtracking in Emacs' regexp matcher."
 
 (provide 'regexp-opt)
 
-;; arch-tag: 6c5a66f4-29af-4fd6-8c3b-4b554d5b4370
 ;;; regexp-opt.el ends here
diff --git a/lisp/emacs-lisp/regi.el b/lisp/emacs-lisp/regi.el
index 78491636d78..8000dcd53dd 100644
--- a/lisp/emacs-lisp/regi.el
+++ b/lisp/emacs-lisp/regi.el
@@ -1,7 +1,6 @@
 ;;; regi.el --- REGular expression Interpreting engine
 
-;; Copyright (C) 1993, 2001, 2002, 2003, 2004, 2005,
-;;   2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+;; Copyright (C) 1993, 2001-2011 Free Software Foundation, Inc.
 
 ;; Author: 1993 Barry A. Warsaw, Century Computing, Inc. <bwarsaw@cen.com>
 ;; Maintainer:    bwarsaw@cen.com
@@ -254,5 +253,4 @@ useful information:
 
 (provide 'regi)
 
-;; arch-tag: 804b4e45-4109-4f76-9a88-21887b881747
 ;;; regi.el ends here
diff --git a/lisp/emacs-lisp/ring.el b/lisp/emacs-lisp/ring.el
index b961d403fa0..affaa9ce32e 100644
--- a/lisp/emacs-lisp/ring.el
+++ b/lisp/emacs-lisp/ring.el
@@ -1,7 +1,6 @@
 ;;; ring.el --- handle rings of items
 
-;; Copyright (C) 1992, 2001, 2002, 2003, 2004, 2005,
-;;   2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+;; Copyright (C) 1992, 2001-2011 Free Software Foundation, Inc.
 
 ;; Maintainer: FSF
 ;; Keywords: extensions
@@ -236,5 +235,4 @@ If SEQ is already a ring, return it."
 
 (provide 'ring)
 
-;; arch-tag: e707682b-ed69-47c9-b20f-cf2c68cc92d2
 ;;; ring.el ends here
diff --git a/lisp/emacs-lisp/rx.el b/lisp/emacs-lisp/rx.el
index 522d452c2dc..7122de4789c 100644
--- a/lisp/emacs-lisp/rx.el
+++ b/lisp/emacs-lisp/rx.el
@@ -1,7 +1,6 @@
 ;;; rx.el --- sexp notation for regular expressions
 
-;; Copyright (C) 2001, 2002, 2003, 2004, 2005,
-;;   2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+;; Copyright (C) 2001-2011 Free Software Foundation, Inc.
 
 ;; Author: Gerd Moellmann <gerd@gnu.org>
 ;; Maintainer: FSF
@@ -120,19 +119,17 @@
     (nonl		. not-newline)	; SRE
     (anything		. (rx-anything 0 nil))
     (any		. (rx-any 1 nil rx-check-any)) ; inconsistent with SRE
+    (any		. ".")          ; sregex
     (in			. any)
     (char		. any)		; sregex
     (not-char		. (rx-not-char 1 nil rx-check-any)) ; sregex
     (not		. (rx-not 1 1 rx-check-not))
-    ;; Partially consistent with sregex, whose `repeat' is like our
-    ;; `**'.  (`repeat' with optional max arg and multiple sexp forms
-    ;; is ambiguous.)
-    (repeat		. (rx-repeat 2 3))
+    (repeat		. (rx-repeat 2 nil))
     (=			. (rx-= 2 nil))	   ; SRE
     (>=			. (rx->= 2 nil))   ; SRE
     (**			. (rx-** 2 nil))   ; SRE
     (submatch		. (rx-submatch 1 nil)) ; SRE
-    (group		. submatch)
+    (group		. submatch)     ; sregex
     (zero-or-more	. (rx-kleene 1 nil))
     (one-or-more	. (rx-kleene 1 nil))
     (zero-or-one	. (rx-kleene 1 nil))
@@ -175,6 +172,7 @@
     (category		. (rx-category 1 1 rx-check-category))
     (eval		. (rx-eval 1 1))
     (regexp		. (rx-regexp 1 1 stringp))
+    (regex		. regexp)       ; sregex
     (digit		. "[[:digit:]]")
     (numeric		. digit)	; SRE
     (num		. digit)	; SRE
@@ -295,15 +293,27 @@ regular expression strings.")
 `zero-or-more', and `one-or-more'.  Dynamically bound.")
 
 
-(defun rx-info (op)
+(defun rx-info (op head)
   "Return parsing/code generation info for OP.
 If OP is the space character ASCII 32, return info for the symbol `?'.
 If OP is the character `?', return info for the symbol `??'.
-See also `rx-constituents'."
+See also `rx-constituents'.
+If HEAD is non-nil, then OP is the head of a sexp, otherwise it's
+a standalone symbol."
   (cond ((eq op ? ) (setq op '\?))
 	((eq op ??) (setq op '\??)))
-  (while (and (not (null op)) (symbolp op))
-    (setq op (cdr (assq op rx-constituents))))
+  (let (old-op)
+    (while (and (not (null op)) (symbolp op))
+      (setq old-op op)
+      (setq op (cdr (assq op rx-constituents)))
+      (when (if head (stringp op) (consp op))
+        ;; We found something but of the wrong kind.  Let's look for an
+        ;; alternate definition for the other case.
+        (let ((new-op
+               (cdr (assq old-op (cdr (memq (assq old-op rx-constituents)
+                                            rx-constituents))))))
+          (if (and new-op (not (if head (stringp new-op) (consp new-op))))
+              (setq op new-op))))))
   op)
 
 
@@ -311,7 +321,7 @@ See also `rx-constituents'."
   "Check FORM according to its car's parsing info."
   (unless (listp form)
     (error "rx `%s' needs argument(s)" form))
-  (let* ((rx (rx-info (car form)))
+  (let* ((rx (rx-info (car form) 'head))
 	 (nargs (1- (length form)))
 	 (min-args (nth 1 rx))
 	 (max-args (nth 2 rx))
@@ -401,7 +411,7 @@ Only both edges of each range is checked."
 	(setcdr m (1- char)))))
     ranges))
 
-    
+
 (defun rx-any-condense-range (args)
   "Condense by side effect ARGS as range for Rx `any'."
   (let (str
@@ -564,7 +574,7 @@ ARG is optional."
 				 (condition-case nil
 				     (rx-form arg)
 				   (error ""))))
-	      (eq arg 'word-boundary) 
+	      (eq arg 'word-boundary)
 	      (and (consp arg)
 		   (memq (car arg) '(not any in syntax category))))
     (error "rx `not' syntax error: %s" arg))
@@ -643,14 +653,17 @@ If SKIP is non-nil, allow that number of items after the head, i.e.
 (defun rx-** (form)
   "Parse and produce code from FORM `(** N M ...)'."
   (rx-check form)
-  (setq form (cons 'repeat (cdr (rx-trans-forms form 2))))
-  (rx-form form '*))
+  (rx-form (cons 'repeat (cdr (rx-trans-forms form 2))) '*))
 
 
 (defun rx-repeat (form)
   "Parse and produce code from FORM.
-FORM is either `(repeat N FORM1)' or `(repeat N M FORM1)'."
+FORM is either `(repeat N FORM1)' or `(repeat N M FORMS...)'."
   (rx-check form)
+  (if (> (length form) 4)
+      (setq form (rx-trans-forms form 2)))
+  (if (null (nth 2 form))
+      (setq form (cons (nth 0 form) (cons (nth 1 form) (nthcdr 3 form)))))
   (cond ((= (length form) 3)
 	 (unless (and (integerp (nth 1 form))
 		      (> (nth 1 form) 0))
@@ -749,15 +762,18 @@ of all atomic regexps."
   "Parse and produce code from FORM, which is `(syntax SYMBOL)'."
   (rx-check form)
   (let* ((sym (cadr form))
-	 (syntax (assq sym rx-syntax)))
+	 (syntax (cdr (assq sym rx-syntax))))
     (unless syntax
       ;; Try sregex compatibility.
-      (let ((name (symbol-name sym)))
-	(if (= 1 (length name))
-	    (setq syntax (rassq (aref name 0) rx-syntax))))
+      (cond
+       ((characterp sym) (setq syntax sym))
+       ((symbolp sym)
+        (let ((name (symbol-name sym)))
+          (if (= 1 (length name))
+              (setq syntax (aref name 0))))))
       (unless syntax
-	(error "Unknown rx syntax `%s'" (cadr form))))
-    (format "\\s%c" (cdr syntax))))
+	(error "Unknown rx syntax `%s'" sym)))
+    (format "\\s%c" syntax)))
 
 
 (defun rx-check-category (form)
@@ -811,7 +827,7 @@ shy groups around the result and some more in other functions."
     (cond ((integerp form)
 	   (regexp-quote (char-to-string form)))
 	  ((symbolp form)
-	   (let ((info (rx-info form)))
+	   (let ((info (rx-info form nil)))
 	     (cond ((stringp info)
 		    info)
 		   ((null info)
@@ -819,7 +835,7 @@ shy groups around the result and some more in other functions."
 		   (t
 		    (funcall (nth 0 info) form)))))
 	  ((consp form)
-	   (let ((info (rx-info (car form))))
+	   (let ((info (rx-info (car form) 'head)))
 	     (unless (consp info)
 	       (error "Unknown rx form `%s'" (car form)))
 	     (funcall (nth 0 info) form)))
@@ -1144,5 +1160,4 @@ enclosed in `(and ...)'.
 
 (provide 'rx)
 
-;; arch-tag: 12d01a63-0008-42bb-ab8c-1c7d63be370b
 ;;; rx.el ends here
diff --git a/lisp/emacs-lisp/shadow.el b/lisp/emacs-lisp/shadow.el
index e690cbaa1bc..c5bad3bd40f 100644
--- a/lisp/emacs-lisp/shadow.el
+++ b/lisp/emacs-lisp/shadow.el
@@ -1,7 +1,6 @@
 ;;; shadow.el --- locate Emacs Lisp file shadowings
 
-;; Copyright (C) 1995, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
-;;   2009, 2010  Free Software Foundation, Inc.
+;; Copyright (C) 1995, 2001-2011  Free Software Foundation, Inc.
 
 ;; Author: Terry Jones <terry@santafe.edu>
 ;; Keywords: lisp
diff --git a/lisp/emacs-lisp/smie.el b/lisp/emacs-lisp/smie.el
index a7021b3cf7b..702e8d880ba 100644
--- a/lisp/emacs-lisp/smie.el
+++ b/lisp/emacs-lisp/smie.el
@@ -1,6 +1,6 @@
 ;;; smie.el --- Simple Minded Indentation Engine
 
-;; Copyright (C) 2010  Free Software Foundation, Inc.
+;; Copyright (C) 2010-2011  Free Software Foundation, Inc.
 
 ;; Author: Stefan Monnier <monnier@iro.umontreal.ca>
 ;; Keywords: languages, lisp, internal, parsing, indentation
diff --git a/lisp/emacs-lisp/sregex.el b/lisp/emacs-lisp/sregex.el
deleted file mode 100644
index f5e3aac231c..00000000000
--- a/lisp/emacs-lisp/sregex.el
+++ /dev/null
@@ -1,608 +0,0 @@
-;;; sregex.el --- symbolic regular expressions
-
-;; Copyright (C) 1997, 1998, 2000, 2001, 2002, 2003, 2004,
-;;   2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
-
-;; Author: Bob Glickstein <bobg+sregex@zanshin.com>
-;; Maintainer: Bob Glickstein <bobg+sregex@zanshin.com>
-;; Keywords: extensions
-
-;; 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 <http://www.gnu.org/licenses/>.
-
-;;; Commentary:
-
-;; This package allows you to write regular expressions using a
-;; totally new, Lisp-like syntax.
-
-;; A "symbolic regular expression" (sregex for short) is a Lisp form
-;; that, when evaluated, produces the string form of the specified
-;; regular expression.  Here's a simple example:
-
-;;   (sregexq (or "Bob" "Robert"))  =>  "Bob\\|Robert"
-
-;; As you can see, an sregex is specified by placing one or more
-;; special clauses in a call to `sregexq'.  The clause in this case is
-;; the `or' of two strings (not to be confused with the Lisp function
-;; `or').  The list of allowable clauses appears below.
-
-;; With sregex, it is never necessary to "escape" magic characters
-;; that are meant to be taken literally; that happens automatically.
-;; For example:
-
-;;   (sregexq "M*A*S*H")  =>  "M\\*A\\*S\\*H"
-
-;; It is also unnecessary to "group" parts of the expression together
-;; to overcome operator precedence; that also happens automatically.
-;; For example:
-
-;;   (sregexq (opt (or "Bob" "Robert")))  =>  "\\(?:Bob\\|Robert\\)?"
-
-;; It *is* possible to group parts of the expression in order to refer
-;; to them with numbered backreferences:
-
-;;   (sregexq (group (or "Go" "Run"))
-;;            ", Spot, "
-;;            (backref 1))             =>  "\\(Go\\|Run\\), Spot, \\1"
-
-;; `sregexq' is a macro.  Each time it is used, it constructs a simple
-;; Lisp expression that then invokes a moderately complex engine to
-;; interpret the sregex and render the string form.  Because of this,
-;; I don't recommend sprinkling calls to `sregexq' throughout your
-;; code, the way one normally does with string regexes (which are
-;; cheap to evaluate).  Instead, it's wiser to precompute the regexes
-;; you need wherever possible instead of repeatedly constructing the
-;; same ones over and over.  Example:
-
-;;    (let ((field-regex (sregexq (opt "resent-")
-;;                                (or "to" "cc" "bcc"))))
-;;      ...
-;;      (while ...
-;;        ...
-;;        (re-search-forward field-regex ...)
-;;        ...))
-
-;; The arguments to `sregexq' are automatically quoted, but the
-;; flipside of this is that it is not straightforward to include
-;; computed (i.e., non-constant) values in `sregexq' expressions.  So
-;; `sregex' is a function that is like `sregexq' but which does not
-;; automatically quote its values.  Literal sregex clauses must be
-;; explicitly quoted like so:
-
-;;   (sregex '(or "Bob" "Robert"))  =>  "Bob\\|Robert"
-
-;; but computed clauses can be included easily, allowing for the reuse
-;; of common clauses:
-
-;;  (let ((dotstar '(0+ any))
-;;        (whitespace '(1+ (syntax ?-)))
-;;        (digits '(1+ (char (?0 . ?9)))))
-;;    (sregex 'bol dotstar ":" whitespace digits))  =>  "^.*:\\s-+[0-9]+"
-
-;; To use this package in a Lisp program, simply (require 'sregex).
-
-;; Here are the clauses allowed in an `sregex' or `sregexq'
-;; expression:
-
-;; - a string
-;;   This stands for the literal string.  If it contains
-;;   metacharacters, they will be escaped in the resulting regex
-;;   (using `regexp-quote').
-
-;; - the symbol `any'
-;;   This stands for ".", a regex matching any character except
-;;   newline.
-
-;; - the symbol `bol'
-;;   Stands for "^", matching the empty string at the beginning of a line
-
-;; - the symbol `eol'
-;;   Stands for "$", matching the empty string at the end of a line
-
-;; - (group CLAUSE ...)
-;;   Groups the given CLAUSEs using "\\(" and "\\)".
-
-;; - (sequence CLAUSE ...)
-
-;;   Groups the given CLAUSEs; may or may not use "\\(?:" and "\\)".
-;;   Clauses grouped by `sequence' do not count for purposes of
-;;   numbering backreferences.  Use `sequence' in situations like
-;;   this:
-
-;;     (sregexq (or "dog" "cat"
-;;                  (sequence (opt "sea ") "monkey")))
-;;                                  =>  "dog\\|cat\\|\\(?:sea \\)?monkey"
-
-;;   where a single `or' alternate needs to contain multiple
-;;   subclauses.
-
-;; - (backref N)
-;;   Matches the same string previously matched by the Nth "group" in
-;;   the same sregex.  N is a positive integer.
-
-;; - (or CLAUSE ...)
-;;   Matches any one of the CLAUSEs by separating them with "\\|".
-
-;; - (0+ CLAUSE ...)
-;;   Concatenates the given CLAUSEs and matches zero or more
-;;   occurrences by appending "*".
-
-;; - (1+ CLAUSE ...)
-;;   Concatenates the given CLAUSEs and matches one or more
-;;   occurrences by appending "+".
-
-;; - (opt CLAUSE ...)
-;;   Concatenates the given CLAUSEs and matches zero or one occurrence
-;;   by appending "?".
-
-;; - (repeat MIN MAX CLAUSE ...)
-;;   Concatenates the given CLAUSEs and constructs a regex matching at
-;;   least MIN occurrences and at most MAX occurrences.  MIN must be a
-;;   non-negative integer.  MAX must be a non-negative integer greater
-;;   than or equal to MIN; or MAX can be nil to mean "infinity."
-
-;; - (char CHAR-CLAUSE ...)
-;;   Creates a "character class" matching one character from the given
-;;   set.  See below for how to construct a CHAR-CLAUSE.
-
-;; - (not-char CHAR-CLAUSE ...)
-;;   Creates a "character class" matching any one character not in the
-;;   given set.  See below for how to construct a CHAR-CLAUSE.
-
-;; - the symbol `bot'
-;;   Stands for "\\`", matching the empty string at the beginning of
-;;   text (beginning of a string or of a buffer).
-
-;; - the symbol `eot'
-;;   Stands for "\\'", matching the empty string at the end of text.
-
-;; - the symbol `point'
-;;   Stands for "\\=", matching the empty string at point.
-
-;; - the symbol `word-boundary'
-;;   Stands for "\\b", matching the empty string at the beginning or
-;;   end of a word.
-
-;; - the symbol `not-word-boundary'
-;;   Stands for "\\B", matching the empty string not at the beginning
-;;   or end of a word.
-
-;; - the symbol `bow'
-;;   Stands for "\\<", matching the empty string at the beginning of a
-;;   word.
-
-;; - the symbol `eow'
-;;   Stands for "\\>", matching the empty string at the end of a word.
-
-;; - the symbol `wordchar'
-;;   Stands for the regex "\\w", matching a word-constituent character
-;;   (as determined by the current syntax table)
-
-;; - the symbol `not-wordchar'
-;;   Stands for the regex "\\W", matching a non-word-constituent
-;;   character.
-
-;; - (syntax CODE)
-;;   Stands for the regex "\\sCODE", where CODE is a syntax table code
-;;   (a single character).  Matches any character with the requested
-;;   syntax.
-
-;; - (not-syntax CODE)
-;;   Stands for the regex "\\SCODE", where CODE is a syntax table code
-;;   (a single character).  Matches any character without the
-;;   requested syntax.
-
-;; - (regex REGEX)
-;;   This is a "trapdoor" for including ordinary regular expression
-;;   strings in the result.  Some regular expressions are clearer when
-;;   written the old way: "[a-z]" vs. (sregexq (char (?a . ?z))), for
-;;   instance.  However, see the note under "Bugs," below.
-
-;; Each CHAR-CLAUSE that is passed to (char ...) and (not-char ...)
-;; has one of the following forms:
-
-;; - a character
-;;   Adds that character to the set.
-
-;; - a string
-;;   Adds all the characters in the string to the set.
-
-;; - A pair (MIN . MAX)
-;;   Where MIN and MAX are characters, adds the range of characters
-;;   from MIN through MAX to the set.
-
-;;; To do:
-
-;; An earlier version of this package could optionally translate the
-;; symbolic regex into other languages' syntaxes, e.g. Perl.  For
-;; instance, with Perl syntax selected, (sregexq (or "ab" "cd")) would
-;; yield "ab|cd" instead of "ab\\|cd".  It might be useful to restore
-;; such a facility.
-
-;; - handle multibyte chars in sregex--char-aux
-;; - add support for character classes ([:blank:], ...)
-;; - add support for non-greedy operators *? and +?
-;; - bug: (sregexq (opt (opt ?a))) returns "a??" which is a non-greedy "a?"
-
-;;; Bugs:
-
-;;; Code:
-
-(eval-when-compile (require 'cl))
-
-;; Compatibility code for when we didn't have shy-groups
-(defvar sregex--current-sregex nil)
-(defun sregex-info () nil)
-(defmacro sregex-save-match-data (&rest forms) (cons 'save-match-data forms))
-(defun sregex-replace-match (r &optional f l str subexp x)
-  (replace-match r f l str subexp))
-(defun sregex-match-string (c &optional i x) (match-string c i))
-(defun sregex-match-string-no-properties (count &optional in-string sregex)
-  (match-string-no-properties count in-string))
-(defun sregex-match-beginning (count &optional sregex) (match-beginning count))
-(defun sregex-match-end (count &optional sregex) (match-end count))
-(defun sregex-match-data (&optional sregex) (match-data))
-(defun sregex-backref-num (n &optional sregex) n)
-
-
-(defun sregex (&rest exps)
-  "Symbolic regular expression interpreter.
-This is exactly like `sregexq' (q.v.) except that it evaluates all its
-arguments, so literal sregex clauses must be quoted.  For example:
-
-  (sregex '(or \"Bob\" \"Robert\"))  =>  \"Bob\\\\|Robert\"
-
-An argument-evaluating sregex interpreter lets you reuse sregex
-subexpressions:
-
-  (let ((dotstar '(0+ any))
-        (whitespace '(1+ (syntax ?-)))
-        (digits '(1+ (char (?0 . ?9)))))
-    (sregex 'bol dotstar \":\" whitespace digits))  =>  \"^.*:\\\\s-+[0-9]+\""
-  (sregex--sequence exps nil))
-
-(defmacro sregexq (&rest exps)
-  "Symbolic regular expression interpreter.
-This macro allows you to specify a regular expression (regexp) in
-symbolic form, and converts it into the string form required by Emacs's
-regex functions such as `re-search-forward' and `looking-at'.  Here is
-a simple example:
-
-  (sregexq (or \"Bob\" \"Robert\"))  =>  \"Bob\\\\|Robert\"
-
-As you can see, an sregex is specified by placing one or more special
-clauses in a call to `sregexq'.  The clause in this case is the `or'
-of two strings (not to be confused with the Lisp function `or').  The
-list of allowable clauses appears below.
-
-With `sregex', it is never necessary to \"escape\" magic characters
-that are meant to be taken literally; that happens automatically.
-For example:
-
-  (sregexq \"M*A*S*H\")  =>  \"M\\\\*A\\\\*S\\\\*H\"
-
-It is also unnecessary to \"group\" parts of the expression together
-to overcome operator precedence; that also happens automatically.
-For example:
-
-  (sregexq (opt (or \"Bob\" \"Robert\")))  =>  \"\\\\(Bob\\\\|Robert\\\\)?\"
-
-It *is* possible to group parts of the expression in order to refer
-to them with numbered backreferences:
-
-  (sregexq (group (or \"Go\" \"Run\"))
-           \", Spot, \"
-           (backref 1))             =>  \"\\\\(Go\\\\|Run\\\\), Spot, \\\\1\"
-
-If `sregexq' needs to introduce its own grouping parentheses, it will
-automatically renumber your backreferences:
-
-  (sregexq (opt \"resent-\")
-           (group (or \"to\" \"cc\" \"bcc\"))
-           \": \"
-           (backref 1))  =>  \"\\\\(resent-\\\\)?\\\\(to\\\\|cc\\\\|bcc\\\\): \\\\2\"
-
-`sregexq' is a macro.  Each time it is used, it constructs a simple
-Lisp expression that then invokes a moderately complex engine to
-interpret the sregex and render the string form.  Because of this, I
-don't recommend sprinkling calls to `sregexq' throughout your code,
-the way one normally does with string regexes (which are cheap to
-evaluate).  Instead, it's wiser to precompute the regexes you need
-wherever possible instead of repeatedly constructing the same ones
-over and over.  Example:
-
-   (let ((field-regex (sregexq (opt \"resent-\")
-                               (or \"to\" \"cc\" \"bcc\"))))
-     ...
-     (while ...
-       ...
-       (re-search-forward field-regex ...)
-       ...))
-
-The arguments to `sregexq' are automatically quoted, but the
-flipside of this is that it is not straightforward to include
-computed (i.e., non-constant) values in `sregexq' expressions.  So
-`sregex' is a function that is like `sregexq' but which does not
-automatically quote its values.  Literal sregex clauses must be
-explicitly quoted like so:
-
-  (sregex '(or \"Bob\" \"Robert\"))  =>  \"Bob\\\\|Robert\"
-
-but computed clauses can be included easily, allowing for the reuse
-of common clauses:
-
-  (let ((dotstar '(0+ any))
-        (whitespace '(1+ (syntax ?-)))
-        (digits '(1+ (char (?0 . ?9)))))
-    (sregex 'bol dotstar \":\" whitespace digits))  =>  \"^.*:\\\\s-+[0-9]+\"
-
-Here are the clauses allowed in an `sregex' or `sregexq' expression:
-
-- a string
-  This stands for the literal string.  If it contains
-  metacharacters, they will be escaped in the resulting regex
-  (using `regexp-quote').
-
-- the symbol `any'
-  This stands for \".\", a regex matching any character except
-  newline.
-
-- the symbol `bol'
-  Stands for \"^\", matching the empty string at the beginning of a line
-
-- the symbol `eol'
-  Stands for \"$\", matching the empty string at the end of a line
-
-- (group CLAUSE ...)
-  Groups the given CLAUSEs using \"\\\\(\" and \"\\\\)\".
-
-- (sequence CLAUSE ...)
-
-  Groups the given CLAUSEs; may or may not use \"\\\\(\" and \"\\\\)\".
-  Clauses grouped by `sequence' do not count for purposes of
-  numbering backreferences.  Use `sequence' in situations like
-  this:
-
-    (sregexq (or \"dog\" \"cat\"
-                 (sequence (opt \"sea \") \"monkey\")))
-                                 =>  \"dog\\\\|cat\\\\|\\\\(?:sea \\\\)?monkey\"
-
-  where a single `or' alternate needs to contain multiple
-  subclauses.
-
-- (backref N)
-  Matches the same string previously matched by the Nth \"group\" in
-  the same sregex.  N is a positive integer.
-
-- (or CLAUSE ...)
-  Matches any one of the CLAUSEs by separating them with \"\\\\|\".
-
-- (0+ CLAUSE ...)
-  Concatenates the given CLAUSEs and matches zero or more
-  occurrences by appending \"*\".
-
-- (1+ CLAUSE ...)
-  Concatenates the given CLAUSEs and matches one or more
-  occurrences by appending \"+\".
-
-- (opt CLAUSE ...)
-  Concatenates the given CLAUSEs and matches zero or one occurrence
-  by appending \"?\".
-
-- (repeat MIN MAX CLAUSE ...)
-  Concatenates the given CLAUSEs and constructs a regex matching at
-  least MIN occurrences and at most MAX occurrences.  MIN must be a
-  non-negative integer.  MAX must be a non-negative integer greater
-  than or equal to MIN; or MAX can be nil to mean \"infinity.\"
-
-- (char CHAR-CLAUSE ...)
-  Creates a \"character class\" matching one character from the given
-  set.  See below for how to construct a CHAR-CLAUSE.
-
-- (not-char CHAR-CLAUSE ...)
-  Creates a \"character class\" matching any one character not in the
-  given set.  See below for how to construct a CHAR-CLAUSE.
-
-- the symbol `bot'
-  Stands for \"\\\\`\", matching the empty string at the beginning of
-  text (beginning of a string or of a buffer).
-
-- the symbol `eot'
-  Stands for \"\\\\'\", matching the empty string at the end of text.
-
-- the symbol `point'
-  Stands for \"\\\\=\\=\", matching the empty string at point.
-
-- the symbol `word-boundary'
-  Stands for \"\\\\b\", matching the empty string at the beginning or
-  end of a word.
-
-- the symbol `not-word-boundary'
-  Stands for \"\\\\B\", matching the empty string not at the beginning
-  or end of a word.
-
-- the symbol `bow'
-  Stands for \"\\\\=\\<\", matching the empty string at the beginning of a
-  word.
-
-- the symbol `eow'
-  Stands for \"\\\\=\\>\", matching the empty string at the end of a word.
-
-- the symbol `wordchar'
-  Stands for the regex \"\\\\w\", matching a word-constituent character
-  (as determined by the current syntax table)
-
-- the symbol `not-wordchar'
-  Stands for the regex \"\\\\W\", matching a non-word-constituent
-  character.
-
-- (syntax CODE)
-  Stands for the regex \"\\\\sCODE\", where CODE is a syntax table code
-  (a single character).  Matches any character with the requested
-  syntax.
-
-- (not-syntax CODE)
-  Stands for the regex \"\\\\SCODE\", where CODE is a syntax table code
-  (a single character).  Matches any character without the
-  requested syntax.
-
-- (regex REGEX)
-  This is a \"trapdoor\" for including ordinary regular expression
-  strings in the result.  Some regular expressions are clearer when
-  written the old way: \"[a-z]\" vs. (sregexq (char (?a . ?z))), for
-  instance.
-
-Each CHAR-CLAUSE that is passed to (char ...) and (not-char ...)
-has one of the following forms:
-
-- a character
-  Adds that character to the set.
-
-- a string
-  Adds all the characters in the string to the set.
-
-- A pair (MIN . MAX)
-  Where MIN and MAX are characters, adds the range of characters
-  from MIN through MAX to the set."
-  `(apply 'sregex ',exps))
-
-(defun sregex--engine (exp combine)
-  (cond
-   ((stringp exp)
-    (if (and combine
-	     (eq combine 'suffix)
-	     (/= (length exp) 1))
-	(concat "\\(?:" (regexp-quote exp) "\\)")
-      (regexp-quote exp)))
-   ((symbolp exp)
-    (ecase exp
-      (any ".")
-      (bol "^")
-      (eol "$")
-      (wordchar "\\w")
-      (not-wordchar "\\W")
-      (bot "\\`")
-      (eot "\\'")
-      (point "\\=")
-      (word-boundary "\\b")
-      (not-word-boundary "\\B")
-      (bow "\\<")
-      (eow "\\>")))
-   ((consp exp)
-    (funcall (intern (concat "sregex--"
-			     (symbol-name (car exp))))
-	     (cdr exp)
-	     combine))
-   (t (error "Invalid expression: %s" exp))))
-
-(defun sregex--sequence (exps combine)
-  (if (= (length exps) 1) (sregex--engine (car exps) combine)
-    (let ((re (mapconcat
-	       (lambda (e) (sregex--engine e 'concat))
-	       exps "")))
-      (if (eq combine 'suffix)
-          (concat "\\(?:" re "\\)")
-        re))))
-
-(defun sregex--or (exps combine)
-  (if (= (length exps) 1) (sregex--engine (car exps) combine)
-    (let ((re (mapconcat
-	       (lambda (e) (sregex--engine e 'or))
-	       exps "\\|")))
-      (if (not (eq combine 'or))
-          (concat "\\(?:" re "\\)")
-        re))))
-
-(defun sregex--group (exps combine) (concat "\\(" (sregex--sequence exps nil) "\\)"))
-
-(defun sregex--backref (exps combine) (concat "\\" (int-to-string (car exps))))
-(defun sregex--opt (exps combine) (concat (sregex--sequence exps 'suffix) "?"))
-(defun sregex--0+ (exps combine) (concat (sregex--sequence exps 'suffix) "*"))
-(defun sregex--1+ (exps combine) (concat (sregex--sequence exps 'suffix) "+"))
-
-(defun sregex--char (exps combine) (sregex--char-aux nil exps))
-(defun sregex--not-char (exps combine) (sregex--char-aux t exps))
-
-(defun sregex--syntax (exps combine) (format "\\s%c" (car exps)))
-(defun sregex--not-syntax (exps combine) (format "\\S%c" (car exps)))
-
-(defun sregex--regex (exps combine)
-  (if combine (concat "\\(?:" (car exps) "\\)") (car exps)))
-
-(defun sregex--repeat (exps combine)
-  (let* ((min (or (pop exps) 0))
-	 (minstr (number-to-string min))
-	 (max (pop exps)))
-    (concat (sregex--sequence exps 'suffix)
-	    (concat "\\{" minstr ","
-		    (when max (number-to-string max)) "\\}"))))
-
-(defun sregex--char-range (start end)
-  (let ((startc (char-to-string start))
-	(endc (char-to-string end)))
-    (cond
-     ((> end (+ start 2)) (concat startc "-" endc))
-     ((> end (+ start 1)) (concat startc (char-to-string (1+ start)) endc))
-     ((> end start) (concat startc endc))
-     (t startc))))
-
-(defun sregex--char-aux (complement args)
-  ;; regex-opt does the same, we should join effort.
-  (let ((chars (make-bool-vector 256 nil))) ; Yeah, right!
-    (dolist (arg args)
-      (cond ((integerp arg) (aset chars arg t))
-	    ((stringp arg) (mapc (lambda (c) (aset chars c t)) arg))
-	    ((consp arg)
-	     (let ((start (car arg))
-		   (end (cdr arg)))
-	       (when (> start end)
-		 (let ((tmp start)) (setq start end) (setq end tmp)))
-	       ;; now start <= end
-	       (let ((i start))
-		 (while (<= i end)
-		   (aset chars i t)
-		   (setq i (1+ i))))))))
-    ;; now chars is a map of the characters in the class
-    (let ((caret (aref chars ?^))
-	  (dash (aref chars ?-))
-	  (class (if (aref chars ?\]) "]" "")))
-      (aset chars ?^ nil)
-      (aset chars ?- nil)
-      (aset chars ?\] nil)
-
-      (let (start end)
-	(dotimes (i 256)
-	  (if (aref chars i)
-	      (progn
-		(unless start (setq start i))
-		(setq end i)
-		(aset chars i nil))
-	    (when start
-	      (setq class (concat class (sregex--char-range start end)))
-	      (setq start nil))))
-	(if start
-	    (setq class (concat class (sregex--char-range start end)))))
-
-      (if (> (length class) 0)
-	  (setq class (concat class (if caret "^") (if dash "-")))
-	(setq class (concat class (if dash "-") (if caret "^"))))
-      (if (and (not complement) (= (length class) 1))
-	  (regexp-quote class)
-	(concat "[" (if complement "^") class "]")))))
-
-(provide 'sregex)
-
-;; arch-tag: 460c1f5a-eb6e-42ec-a451-ffac78bdf492
-;;; sregex.el ends here
diff --git a/lisp/emacs-lisp/syntax.el b/lisp/emacs-lisp/syntax.el
index b85399263d0..c012e48b590 100644
--- a/lisp/emacs-lisp/syntax.el
+++ b/lisp/emacs-lisp/syntax.el
@@ -1,7 +1,6 @@
 ;;; syntax.el --- helper functions to find syntactic context
 
-;; Copyright (C) 2000, 2001, 2002, 2003, 2004,
-;;   2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+;; Copyright (C) 2000-2011 Free Software Foundation, Inc.
 
 ;; Maintainer: FSF
 ;; Keywords: internal
@@ -578,5 +577,4 @@ Point is at POS when this function returns."
 
 (provide 'syntax)
 
-;; arch-tag: 302f1eeb-e77c-4680-a8c5-c543e01161a5
 ;;; syntax.el ends here
diff --git a/lisp/emacs-lisp/tcover-ses.el b/lisp/emacs-lisp/tcover-ses.el
index 8df70f4d979..b91b96b83e5 100644
--- a/lisp/emacs-lisp/tcover-ses.el
+++ b/lisp/emacs-lisp/tcover-ses.el
@@ -1,7 +1,6 @@
 ;;;; testcover-ses.el -- Example use of `testcover' to test "SES"
 
-;; Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
-;;   Free Software Foundation, Inc.
+;; Copyright (C) 2002-2011  Free Software Foundation, Inc.
 
 ;; Author: Jonathan Yavner <jyavner@engineer.com>
 ;; Maintainer: Jonathan Yavner <jyavner@engineer.com>
@@ -722,5 +721,4 @@ spreadsheet files with invalid formatting."
   ;;Could do this here: (testcover-end "ses.el")
   (message "Done"))
 
-;; arch-tag: 87052ba4-5cf8-46cf-9375-fe245f3360b8
 ;; testcover-ses.el ends here.
diff --git a/lisp/emacs-lisp/tcover-unsafep.el b/lisp/emacs-lisp/tcover-unsafep.el
index 47f931bf9d3..2be026b98eb 100644
--- a/lisp/emacs-lisp/tcover-unsafep.el
+++ b/lisp/emacs-lisp/tcover-unsafep.el
@@ -1,6 +1,6 @@
 ;;;; testcover-unsafep.el -- Use testcover to test unsafep's code coverage
 
-;; Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+;; Copyright (C) 2002-2011 Free Software Foundation, Inc.
 
 ;; Author: Jonathan Yavner <jyavner@engineer.com>
 ;; Maintainer: Jonathan Yavner <jyavner@engineer.com>
@@ -138,5 +138,4 @@
   (testcover-end "unsafep.el")
   (message "Done"))
 
-;; arch-tag: a7616c27-1998-47ae-9304-76d1439dbf29
 ;; testcover-unsafep.el ends here.
diff --git a/lisp/emacs-lisp/testcover.el b/lisp/emacs-lisp/testcover.el
index 95262e17d5f..08f757819f2 100644
--- a/lisp/emacs-lisp/testcover.el
+++ b/lisp/emacs-lisp/testcover.el
@@ -1,6 +1,6 @@
 ;;;; testcover.el -- Visual code-coverage tool
 
-;; Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+;; Copyright (C) 2002-2011 Free Software Foundation, Inc.
 
 ;; Author: Jonathan Yavner <jyavner@member.fsf.org>
 ;; Maintainer: Jonathan Yavner <jyavner@member.fsf.org>
@@ -534,5 +534,4 @@ coverage tests.  This function creates many overlays."
   (goto-char (next-overlay-change (point)))
   (end-of-line))
 
-;; arch-tag: 72324a4a-4a2e-4142-9249-cc56d6757588
 ;; testcover.el ends here.
diff --git a/lisp/emacs-lisp/timer.el b/lisp/emacs-lisp/timer.el
index b12d9068676..5f069226aa9 100644
--- a/lisp/emacs-lisp/timer.el
+++ b/lisp/emacs-lisp/timer.el
@@ -1,7 +1,6 @@
 ;;; timer.el --- run a function with args at some time in future
 
-;; Copyright (C) 1996, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
-;;   2009, 2010  Free Software Foundation, Inc.
+;; Copyright (C) 1996, 2001-2011  Free Software Foundation, Inc.
 
 ;; Maintainer: FSF
 ;; Package: emacs
diff --git a/lisp/emacs-lisp/tq.el b/lisp/emacs-lisp/tq.el
index b0643edc549..3d3b371ad5c 100644
--- a/lisp/emacs-lisp/tq.el
+++ b/lisp/emacs-lisp/tq.el
@@ -1,7 +1,6 @@
 ;;; tq.el --- utility to maintain a transaction queue
 
-;; Copyright (C) 1985, 1986, 1987, 1992, 2001, 2002, 2003, 2004,
-;;   2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+;; Copyright (C) 1985-1987, 1992, 2001-2011 Free Software Foundation, Inc.
 
 ;; Author: Scott Draves <spot@cs.cmu.edu>
 ;; Maintainer: FSF
@@ -167,5 +166,4 @@ This produces more reliable results with some processes."
 
 (provide 'tq)
 
-;; arch-tag: 65dea08c-4edd-4cde-83a5-e8a15b993b79
 ;;; tq.el ends here
diff --git a/lisp/emacs-lisp/trace.el b/lisp/emacs-lisp/trace.el
index 194afe10815..22c1f0e7ea7 100644
--- a/lisp/emacs-lisp/trace.el
+++ b/lisp/emacs-lisp/trace.el
@@ -1,7 +1,6 @@
 ;;; trace.el --- tracing facility for Emacs Lisp functions
 
-;; Copyright (C) 1993, 1998, 2000, 2001, 2002, 2003, 2004,
-;;   2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+;; Copyright (C) 1993, 1998, 2000-2011 Free Software Foundation, Inc.
 
 ;; Author: Hans Chalupsky <hans@cs.buffalo.edu>
 ;; Maintainer: FSF
@@ -299,5 +298,4 @@ was not traced this is a noop."
 
 (provide 'trace)
 
-;; arch-tag: cfd170a7-4932-4331-8c8b-b7151942e5a1
 ;;; trace.el ends here
diff --git a/lisp/emacs-lisp/unsafep.el b/lisp/emacs-lisp/unsafep.el
index a62f8de4010..0f08d77d4c3 100644
--- a/lisp/emacs-lisp/unsafep.el
+++ b/lisp/emacs-lisp/unsafep.el
@@ -1,6 +1,6 @@
 ;;;; unsafep.el -- Determine whether a Lisp form is safe to evaluate
 
-;; Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+;; Copyright (C) 2002-2011 Free Software Foundation, Inc.
 
 ;; Author: Jonathan Yavner <jyavner@member.fsf.org>
 ;; Maintainer: Jonathan Yavner <jyavner@member.fsf.org>
@@ -202,6 +202,9 @@ UNSAFEP-VARS is a list of symbols with local bindings."
 	      (dolist (x (nthcdr 3 form))
 		(setq reason (unsafep-progn (cdr x)))
 		(if reason (throw 'unsafep reason))))))
+       ((eq fun '\`)
+	;; Backquoted form - safe if its expansion is.
+	(unsafep (cdr (backquote-process (cadr form)))))
        (t
 	;;First unsafep-function call above wasn't nil, no special case applies
 	reason)))))
@@ -258,5 +261,4 @@ If TO-BIND is t, check whether SYM is safe to bind."
 	     (local-variable-p sym)))
     `(global-variable ,sym))))
 
-;; arch-tag: 6216f98b-eb8f-467a-9c33-7a7644f50658
 ;;; unsafep.el ends here
diff --git a/lisp/emacs-lisp/warnings.el b/lisp/emacs-lisp/warnings.el
index ba8c8ffc831..1fb8ac0c2b6 100644
--- a/lisp/emacs-lisp/warnings.el
+++ b/lisp/emacs-lisp/warnings.el
@@ -1,6 +1,6 @@
 ;;; warnings.el --- log and display warnings
 
-;; Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+;; Copyright (C) 2002-2011 Free Software Foundation, Inc.
 
 ;; Maintainer: FSF
 ;; Keywords: internal
@@ -337,5 +337,4 @@ this is equivalent to `display-warning', using
 
 (provide 'warnings)
 
-;; arch-tag: faaad1c8-7b2a-4161-af38-5ab4afde0496
 ;;; warnings.el ends here