diff --git a/lisp/dired-x.el b/lisp/dired-x.el
index dccaa9e96ca..088ca81ed8d 100644
--- a/lisp/dired-x.el
+++ b/lisp/dired-x.el
@@ -816,12 +816,11 @@ If in a Dired buffer, reverts it."
   (interactive)
   (if (file-exists-p dired-local-variables-file)
       (error "Old-style dired-local-variables-file `./%s' found;
-replace it with a dir-locals-file `./%s.el'"
+replace it with a dir-locals-file `./%s'"
              dired-local-variables-file
              dir-locals-file))
-  (if (dir-locals--all-files default-directory)
-      (message "File `./%s' already exists."
-               (car (dir-locals--all-files default-directory)))
+  (if (file-exists-p dir-locals-file)
+      (message "File `./%s' already exists." dir-locals-file)
     (add-dir-local-variable 'dired-mode 'subdirs nil)
     (add-dir-local-variable 'dired-mode 'dired-omit-mode t)
     ;; Run extra-hooks and revert directory.
diff --git a/lisp/dired.el b/lisp/dired.el
index 24b128f2944..ef22d457bca 100644
--- a/lisp/dired.el
+++ b/lisp/dired.el
@@ -4428,7 +4428,7 @@ instead.
 
 ;;;***
 
-;;;### (autoloads nil "dired-x" "dired-x.el" "8dae922d1549647835460b6cb70af4df")
+;;;### (autoloads nil "dired-x" "dired-x.el" "f00ad5ec7383d017263855ad8add60a3")
 ;;; Generated autoloads from dired-x.el
 
 (autoload 'dired-jump "dired-x" "\
diff --git a/lisp/emacs-lisp/smie.el b/lisp/emacs-lisp/smie.el
index 495ba7cb859..1d8f0cb8f5d 100644
--- a/lisp/emacs-lisp/smie.el
+++ b/lisp/emacs-lisp/smie.el
@@ -1493,7 +1493,10 @@ should not be computed on the basis of the following token."
                            (let ((endpos (point)))
                              (goto-char pos)
                              (forward-line 1)
-                             (and (equal res (smie-indent-forward-token))
+                             ;; As seen in bug#22960, pos may be inside
+                             ;; a string, and forward-token may then stumble.
+                             (and (ignore-errors
+                                    (equal res (smie-indent-forward-token)))
                                   (eq (point) endpos)))))
                     nil
                   (goto-char pos)
diff --git a/lisp/gnus/mm-decode.el b/lisp/gnus/mm-decode.el
index f70877dc63a..3ea63c74034 100644
--- a/lisp/gnus/mm-decode.el
+++ b/lisp/gnus/mm-decode.el
@@ -30,6 +30,7 @@
 (autoload 'gnus-map-function "gnus-util")
 (autoload 'gnus-replace-in-string "gnus-util")
 (autoload 'gnus-read-shell-command "gnus-util")
+(autoload 'gnus-format-message "gnus-util")
 
 (autoload 'mm-inline-partial "mm-partial")
 (autoload 'mm-inline-external-body "mm-extern")
diff --git a/lisp/gnus/mml-sec.el b/lisp/gnus/mml-sec.el
index 3ac3da0127d..254c427299e 100644
--- a/lisp/gnus/mml-sec.el
+++ b/lisp/gnus/mml-sec.el
@@ -27,6 +27,8 @@
 
 (require 'gnus-util)
 (require 'epg)
+(require 'password-cache)
+(require 'mm-encode)
 
 (autoload 'mail-strip-quoted-names "mail-utils")
 (autoload 'mml2015-sign "mml2015")
@@ -35,6 +37,7 @@
 (autoload 'mml1991-encrypt "mml1991")
 (autoload 'message-fetch-field "message")
 (autoload 'message-goto-body "message")
+(autoload 'message-options-get "message")
 (autoload 'mml-insert-tag "mml")
 (autoload 'mml-smime-sign "mml-smime")
 (autoload 'mml-smime-encrypt "mml-smime")
@@ -44,6 +47,8 @@
 (autoload 'mml-smime-verify-test "mml-smime")
 (autoload 'epa--select-keys "epa")
 
+(declare-function message-options-set "message" (symbol value))
+
 (defvar mml-sign-alist
   '(("smime"     mml-smime-sign-buffer     mml-smime-sign-query)
     ("pgp"       mml-pgp-sign-buffer       list)
@@ -110,20 +115,15 @@ details."
   :group 'message
   :type 'boolean)
 
-(defcustom mml-secure-cache-passphrase
-  (if (boundp 'password-cache)
-      password-cache
-    t)
+;; FIXME If it's "NOT recommended", why is it the default?
+(defcustom mml-secure-cache-passphrase password-cache
   "If t, cache OpenPGP or S/MIME passphrases inside Emacs.
 Passphrase caching in Emacs is NOT recommended.  Use gpg-agent instead.
 See Info node `(message) Security'."
   :group 'message
   :type 'boolean)
 
-(defcustom mml-secure-passphrase-cache-expiry
-  (if (boundp 'password-cache-expiry)
-      password-cache-expiry
-    16)
+(defcustom mml-secure-passphrase-cache-expiry password-cache-expiry
   "How many seconds the passphrase is cached.
 Whether the passphrase is cached at all is controlled by
 `mml-secure-cache-passphrase'."
diff --git a/lisp/gnus/mml-smime.el b/lisp/gnus/mml-smime.el
index 248e63682c8..502c65b2463 100644
--- a/lisp/gnus/mml-smime.el
+++ b/lisp/gnus/mml-smime.el
@@ -356,10 +356,6 @@ Whether the passphrase is cached at all is controlled by
 
 (autoload 'mml-compute-boundary "mml")
 
-;; We require mm-decode, which requires mm-bodies, which autoloads
-;; message-options-get (!).
-(declare-function message-options-set "message" (symbol value))
-
 (defun mml-smime-epg-sign (cont)
   (let ((inhibit-redisplay t)
 	(boundary (mml-compute-boundary cont)))
diff --git a/lisp/gnus/mml1991.el b/lisp/gnus/mml1991.el
index bb5c940f173..568dc564d91 100644
--- a/lisp/gnus/mml1991.el
+++ b/lisp/gnus/mml1991.el
@@ -25,11 +25,6 @@
 
 ;;; Code:
 
-(eval-and-compile
-  (if (locate-library "password-cache")
-      (require 'password-cache)
-    (require 'password)))
-
 (eval-when-compile
   (require 'cl)
   (require 'mm-util))
diff --git a/lisp/gnus/mml2015.el b/lisp/gnus/mml2015.el
index e2e99771801..61ca53624d3 100644
--- a/lisp/gnus/mml2015.el
+++ b/lisp/gnus/mml2015.el
@@ -27,11 +27,6 @@
 
 ;;; Code:
 
-(eval-and-compile
-  (if (locate-library "password-cache")
-      (require 'password-cache)
-    (require 'password)))
-
 (eval-when-compile (require 'cl))
 (require 'mm-decode)
 (require 'mm-util)
diff --git a/lisp/mail/rmail.el b/lisp/mail/rmail.el
index 70b0f232ce6..10ba5b38031 100644
--- a/lisp/mail/rmail.el
+++ b/lisp/mail/rmail.el
@@ -4582,6 +4582,8 @@ Argument MIME is non-nil if this is a mime message."
     (list armor-start (- (point-max) after-end) mime
           armor-end-regexp)))
 
+(declare-function rmail-mime-entity-truncated "rmailmm" (entity))
+
 ;; Should this have a key-binding, or be in a menu?
 ;; There doesn't really seem to be an appropriate menu.
 ;; Eg the edit command is not in a menu either.
diff --git a/lisp/progmodes/xref.el b/lisp/progmodes/xref.el
index 69e6a154ae5..feed0fb36d9 100644
--- a/lisp/progmodes/xref.el
+++ b/lisp/progmodes/xref.el
@@ -436,6 +436,8 @@ If SELECT is non-nil, select the target window."
 ;;; XREF buffer (part of the UI)
 
 ;; The xref buffer is used to display a set of xrefs.
+(defconst xref-buffer-name "*xref*"
+  "The name of the buffer to show xrefs.")
 
 (defmacro xref--with-dedicated-window (&rest body)
   `(let* ((xref-w (get-buffer-window xref-buffer-name))
@@ -470,6 +472,9 @@ If SELECT is non-nil, select the target window."
         (xref--show-pos-in-buf marker buf select))
     (user-error (message (error-message-string err)))))
 
+(defvar-local xref--window nil
+  "The original window this xref buffer was created from.")
+
 (defun xref-show-location-at-point ()
   "Display the source of xref at point in the appropriate window, if any."
   (interactive)
@@ -500,9 +505,6 @@ If SELECT is non-nil, select the target window."
     (back-to-indentation)
     (get-text-property (point) 'xref-item)))
 
-(defvar-local xref--window nil
-  "The original window this xref buffer was created from.")
-
 (defun xref-goto-xref ()
   "Jump to the xref on the current line and select its window."
   (interactive)
@@ -624,9 +626,6 @@ references displayed in the current *xref* buffer."
           (t
            (error "No %s xref" (if backward "previous" "next"))))))
 
-(defconst xref-buffer-name "*xref*"
-  "The name of the buffer to show xrefs.")
-
 (defvar xref--button-map
   (let ((map (make-sparse-keymap)))
     (define-key map [(control ?m)] #'xref-goto-xref)
diff --git a/lisp/xml.el b/lisp/xml.el
index 1802d04dfaf..414300cb402 100644
--- a/lisp/xml.el
+++ b/lisp/xml.el
@@ -580,7 +580,7 @@ Return one of:
       ;; However, if we're parsing incrementally, then we need to deal
       ;; with stray CDATA.
       (let ((s (xml-parse-string)))
-        (when (string-empty-p s)
+        (when (zerop (length s))
           ;; We haven't consumed any input! We must throw an error in
           ;; order to prevent looping forever.
           (error "XML: (Not Well-Formed) Could not parse: %s"