* lisp/dired-x.el:

* lisp/net/ange-ftp.el:
* lisp/net/browse-url.el:
* lisp/net/dbus.el:
* lisp/net/eudc.el:
* lisp/net/eudcb-ldap.el:
* lisp/net/eww.el:
* lisp/net/imap.el:
* lisp/printing.el:
* lisp/vc/ediff-diff.el:
* lisp/vc/ediff-init.el:
* lisp/vc/ediff-merg.el:
* lisp/vc/ediff-mult.el:
* lisp/vc/ediff-util.el:
* lisp/vc/ediff-wind.el:
* lisp/vc/ediff.el:
* lisp/vc/emerge.el:
* lisp/vc/pcvs.el:
* vc/vc-annotate.el: Prefix unused arguments with `_' to silence
byte compiler.  Remove some unused let-bound variables.

7 files changed, 38 insertions, 41 deletions

diff --git a/lisp/net/ange-ftp.el b/lisp/net/ange-ftp.el
index 177fdaca150..67c74f88250 100644
--- a/lisp/net/ange-ftp.el
+++ b/lisp/net/ange-ftp.el
@@ -3733,7 +3733,7 @@ so return the size on the remote host exactly. See RFC 3659."
 ;; next part of copying routine.
 (defun ange-ftp-cf1 (result line
 			    filename newname binary msg
-			    f-parsed f-host f-user f-name f-abbr
+			    f-parsed f-host f-user _f-name f-abbr
 			    t-parsed t-host t-user t-name t-abbr
 			    temp1 temp2 cont nowait)
   (if line
@@ -3835,7 +3835,7 @@ so return the size on the remote host exactly. See RFC 3659."
 
 (defun ange-ftp-copy-file (filename newname &optional ok-if-already-exists
 				    keep-date preserve-uid-gid
-				    preserve-selinux-context)
+				    _preserve-selinux-context)
   (interactive "fCopy file: \nFCopy %s to file: \np")
   (ange-ftp-copy-file-internal filename
 			       newname
@@ -4200,7 +4200,7 @@ directory, so that Emacs will know its current contents."
 	(while (and tryfiles (not copy))
 	  (catch 'ftp-error
 	    (let ((ange-ftp-waiting-flag t))
-	      (condition-case error
+	      (condition-case _error
 		  (setq copy (ange-ftp-file-local-copy (car tryfiles)))
 		(ftp-error nil))))
 	  (setq tryfiles (cdr tryfiles)))
@@ -4214,7 +4214,7 @@ directory, so that Emacs will know its current contents."
     (ange-ftp-real-load file noerror nomessage nosuffix)))
 
 ;; Calculate default-unhandled-directory for a given ange-ftp buffer.
-(defun ange-ftp-unhandled-file-name-directory (filename)
+(defun ange-ftp-unhandled-file-name-directory (_filename)
   nil)
 
 
@@ -4605,7 +4605,6 @@ NEWNAME should be the name to give the new compressed or uncompressed file.")
 (defun ange-ftp-shell-command (command &optional output-buffer error-buffer)
   (let* ((parsed (ange-ftp-ftp-name default-directory))
 	 (host (nth 0 parsed))
-	 (user (nth 1 parsed))
 	 (name (nth 2 parsed)))
     (if (not parsed)
 	(ange-ftp-real-shell-command command output-buffer error-buffer)
@@ -5176,7 +5175,7 @@ Other orders of $ and _ seem to all work just fine.")
 		    ;; versions left. If not, then delete the
 		    ;; root entry.
 		    (maphash
-		     (lambda (key val)
+		     (lambda (key _val)
 		       (and (string-match regexp key)
 			    (setq versions t)))
 		     files)
@@ -5358,7 +5357,7 @@ Other orders of $ and _ seem to all work just fine.")
 ;; compressed files. Instead, we turn "FILE.TYPE" into
 ;; "FILE.TYPE-Z". Hope that this is a reasonable thing to do.
 
-(defun ange-ftp-vms-make-compressed-filename (name &optional reverse)
+(defun ange-ftp-vms-make-compressed-filename (name &optional _reverse)
   (cond
    ((string-match "-Z;[0-9]+\\'" name)
     (list nil (substring name 0 (match-beginning 0))))
@@ -5399,7 +5398,7 @@ Other orders of $ and _ seem to all work just fine.")
 ;;	  (cons '(vms . ange-ftp-dired-vms-ls-trim)
 ;;		ange-ftp-dired-ls-trim-alist)))
 
-(defun ange-ftp-vms-sans-version (name &rest args)
+(defun ange-ftp-vms-sans-version (name &rest _args)
   (save-match-data
     (if (string-match ";[0-9]+\\'" name)
 	(substring name 0 (match-beginning 0))
@@ -5920,7 +5919,7 @@ Other orders of $ and _ seem to all work just fine.")
 ;;	  (cons '(cms . ange-ftp-dired-cms-move-to-end-of-filename)
 ;;		ange-ftp-dired-move-to-end-of-filename-alist)))
 
-(defun ange-ftp-cms-make-compressed-filename (name &optional reverse)
+(defun ange-ftp-cms-make-compressed-filename (name &optional _reverse)
   (if (string-match "-Z\\'" name)
       (list nil (substring name 0 -2))
     (list t (concat name "-Z"))))
diff --git a/lisp/net/browse-url.el b/lisp/net/browse-url.el
index 70173dbc0b3..ff654f23747 100644
--- a/lisp/net/browse-url.el
+++ b/lisp/net/browse-url.el
@@ -868,7 +868,7 @@ to use."
 (defvar dos-windows-version)
 (declare-function w32-shell-execute "w32fns.c")    ;; Defined in C.
 
-(defun browse-url-default-windows-browser (url &optional new-window)
+(defun browse-url-default-windows-browser (url &optional _new-window)
   (interactive (browse-url-interactive-arg "URL: "))
   (cond ((eq system-type 'ms-dos)
 	 (if dos-windows-version
@@ -878,7 +878,7 @@ to use."
 	 (call-process "cygstart" nil nil nil url))
 	(t (w32-shell-execute "open" url))))
 
-(defun browse-url-default-macosx-browser (url &optional new-window)
+(defun browse-url-default-macosx-browser (url &optional _new-window)
   (interactive (browse-url-interactive-arg "URL: "))
   (start-process (concat "open " url) nil "open" url))
 
@@ -933,7 +933,7 @@ used instead of `browse-url-new-window-flag'."
     ((executable-find browse-url-xterm-program) 'browse-url-text-xterm)
     ((locate-library "w3") 'browse-url-w3)
     (t
-     (lambda (&rest ignore) (error "No usable browser found"))))
+     (lambda (&rest _ignore) (error "No usable browser found"))))
    url args))
 
 (defun browse-url-can-use-xdg-open ()
@@ -1163,7 +1163,7 @@ URL in a new window."
 	       (append browse-url-firefox-startup-arguments (list url))))))
 
 ;;;###autoload
-(defun browse-url-chromium (url &optional new-window)
+(defun browse-url-chromium (url &optional _new-window)
   "Ask the Chromium WWW browser to load URL.
 Default to the URL around or before point.  The strings in
 variable `browse-url-chromium-arguments' are also passed to
@@ -1272,7 +1272,7 @@ used instead of `browse-url-new-window-flag'."
 (defvar url-handler-regexp)
 
 ;;;###autoload
-(defun browse-url-emacs (url &optional new-window)
+(defun browse-url-emacs (url &optional _new-window)
   "Ask Emacs to load URL into a buffer and show it in another window."
   (interactive (browse-url-interactive-arg "URL: "))
   (require 'url-handlers)
@@ -1413,7 +1413,7 @@ used instead of `browse-url-new-window-flag'."
     (w3-fetch url)))
 
 ;;;###autoload
-(defun browse-url-w3-gnudoit (url &optional new-window)
+(defun browse-url-w3-gnudoit (url &optional _new-window)
   ;; new-window ignored
   "Ask another Emacs running gnuserv to load the URL using the W3 browser.
 The `browse-url-gnudoit-program' program is used with options given by
@@ -1428,7 +1428,7 @@ The `browse-url-gnudoit-program' program is used with options given by
 ;; --- Lynx in an xterm ---
 
 ;;;###autoload
-(defun browse-url-text-xterm (url &optional new-window)
+(defun browse-url-text-xterm (url &optional _new-window)
   ;; new-window ignored
   "Ask a text browser to load URL.
 URL defaults to the URL around or before point.
@@ -1492,7 +1492,7 @@ used instead of `browse-url-new-window-flag'."
            (get-buffer-process buf)
            ;; Don't leave around a dead one (especially because of its
            ;; munged keymap.)
-           (lambda (process event)
+           (lambda (process _event)
              (if (not (memq (process-status process) '(run stop)))
                  (let ((buf (process-buffer process)))
                    (if buf (kill-buffer buf)))))))
@@ -1565,7 +1565,7 @@ used instead of `browse-url-new-window-flag'."
 ;; --- Random browser ---
 
 ;;;###autoload
-(defun browse-url-generic (url &optional new-window)
+(defun browse-url-generic (url &optional _new-window)
   ;; new-window ignored
   "Ask the WWW browser defined by `browse-url-generic-program' to load URL.
 Default to the URL around or before point.  A fresh copy of the
@@ -1580,7 +1580,7 @@ don't offer a form of remote control."
 	 (append browse-url-generic-args (list url))))
 
 ;;;###autoload
-(defun browse-url-kde (url &optional new-window)
+(defun browse-url-kde (url &optional _new-window)
   "Ask the KDE WWW browser to load URL.
 Default to the URL around or before point."
   (interactive (browse-url-interactive-arg "KDE URL: "))
diff --git a/lisp/net/dbus.el b/lisp/net/dbus.el
index 0e9c4fc5c76..a05452c430c 100644
--- a/lisp/net/dbus.el
+++ b/lisp/net/dbus.el
@@ -1609,7 +1609,6 @@ and \"org.freedesktop.DBus.Properties.GetAll\", which is slow."
 It will be registered for all objects created by `dbus-register-method'."
   (let* ((last-input-event last-input-event)
 	 (bus (dbus-event-bus-name last-input-event))
-	 (service (dbus-event-service-name last-input-event))
 	 (path (dbus-event-path-name last-input-event)))
     ;; "GetManagedObjects" returns "a{oa{sa{sv}}}".
     (let (interfaces result)
@@ -1625,8 +1624,7 @@ It will be registered for all objects created by `dbus-register-method'."
       ;; Check all registered object paths.
       (maphash
        (lambda (key val)
-	 (let ((object (or (nth 2 (car-safe val)) ""))
-	       (interface (nth 2 key)))
+	 (let ((object (or (nth 2 (car-safe val)) "")))
 	   (when (and (equal (butlast key 2) (list :method bus))
 		      (string-prefix-p path object))
 	     (dolist (interface (cons (nth 2 key) interfaces))
diff --git a/lisp/net/eudc.el b/lisp/net/eudc.el
index ef09267f854..c474ac9380d 100644
--- a/lisp/net/eudc.el
+++ b/lisp/net/eudc.el
@@ -518,12 +518,12 @@ otherwise they are formatted according to `eudc-user-attribute-names-alist'."
 	   precords))
 	(insert "\n")
 	(widget-create 'push-button
-		       :notify (lambda (&rest ignore)
+		       :notify (lambda (&rest _ignore)
 				 (eudc-query-form))
 		       "New query")
 	(widget-insert " ")
 	(widget-create 'push-button
-		       :notify (lambda (&rest ignore)
+		       :notify (lambda (&rest _ignore)
 				 (kill-this-buffer))
 		       "Quit")
 	(eudc-mode)
@@ -995,17 +995,17 @@ queries the server for the existing fields and displays a corresponding form."
 	  fields)
     (widget-insert "\n\n")
     (widget-create 'push-button
-		   :notify (lambda (&rest ignore)
+		   :notify (lambda (&rest _ignore)
 			     (eudc-process-form))
 		   "Query Server")
     (widget-insert " ")
     (widget-create 'push-button
-		   :notify (lambda (&rest ignore)
+		   :notify (lambda (&rest _ignore)
 			     (eudc-query-form))
 		   "Reset Form")
     (widget-insert " ")
     (widget-create 'push-button
-		   :notify (lambda (&rest ignore)
+		   :notify (lambda (&rest _ignore)
 			     (kill-this-buffer))
 		   "Quit")
     (goto-char pt)
diff --git a/lisp/net/eudcb-ldap.el b/lisp/net/eudcb-ldap.el
index d0ba47ad753..a678ec3ab42 100644
--- a/lisp/net/eudcb-ldap.el
+++ b/lisp/net/eudcb-ldap.el
@@ -136,7 +136,7 @@ RETURN-ATTRS is a list of attributes to return, defaulting to
 	 result))
     final-result))
 
-(defun eudc-ldap-get-field-list (dummy &optional objectclass)
+(defun eudc-ldap-get-field-list (_dummy &optional objectclass)
   "Return a list of valid attribute names for the current server.
 OBJECTCLASS is the LDAP object class for which the valid
 attribute names are returned. Default to `person'"
diff --git a/lisp/net/eww.el b/lisp/net/eww.el
index 8b4dd2eed5f..6cf4ff2c9bf 100644
--- a/lisp/net/eww.el
+++ b/lisp/net/eww.el
@@ -381,7 +381,7 @@ word(s) will be searched for via `eww-search-prefix'."
 	eww-history))
 
 ;;;###autoload
-(defun eww-browse-url (url &optional new-window)
+(defun eww-browse-url (url &optional _new-window)
   (when (and (equal major-mode 'eww-mode)
 	     eww-current-url)
     (eww-save-history))
diff --git a/lisp/net/imap.el b/lisp/net/imap.el
index 9584ceb24d0..256af723861 100644
--- a/lisp/net/imap.el
+++ b/lisp/net/imap.el
@@ -139,7 +139,7 @@
 (eval-when-compile (require 'cl))
 (eval-and-compile
   ;; For Emacs <22.2 and XEmacs.
-  (unless (fboundp 'declare-function) (defmacro declare-function (&rest r)))
+  (unless (fboundp 'declare-function) (defmacro declare-function (&rest _r)))
   (autoload 'starttls-open-stream "starttls")
   (autoload 'starttls-negotiate "starttls")
   (autoload 'sasl-find-mechanism "sasl")
@@ -661,7 +661,7 @@ sure of changing the value of `foo'."
 	      nil)))))
     done))
 
-(defun imap-ssl-p (buffer)
+(defun imap-ssl-p (_buffer)
   nil)
 
 (defun imap-ssl-open (name buffer server port)
@@ -711,7 +711,7 @@ sure of changing the value of `foo'."
       (message "imap: Opening SSL connection with `%s'...failed" cmd)
       nil)))
 
-(defun imap-tls-p (buffer)
+(defun imap-tls-p (_buffer)
   nil)
 
 (defun imap-tls-open (name buffer server port)
@@ -738,7 +738,7 @@ sure of changing the value of `foo'."
       (when (memq (process-status process) '(open run))
 	process))))
 
-(defun imap-network-p (buffer)
+(defun imap-network-p (_buffer)
   t)
 
 (defun imap-network-open (name buffer server port)
@@ -757,7 +757,7 @@ sure of changing the value of `foo'."
       (when (memq (process-status process) '(open run))
 	process))))
 
-(defun imap-shell-p (buffer)
+(defun imap-shell-p (_buffer)
   nil)
 
 (defun imap-shell-open (name buffer server port)
@@ -881,10 +881,10 @@ t if it successfully authenticates, nil otherwise."
       ;;		       passwd nil))))
       ret)))
 
-(defun imap-gssapi-auth-p (buffer)
+(defun imap-gssapi-auth-p (_buffer)
   (eq imap-stream 'gssapi))
 
-(defun imap-gssapi-auth (buffer)
+(defun imap-gssapi-auth (_buffer)
   (message "imap: Authenticating using GSSAPI...%s"
 	   (if (eq imap-stream 'gssapi) "done" "failed"))
   (eq imap-stream 'gssapi))
@@ -893,7 +893,7 @@ t if it successfully authenticates, nil otherwise."
   (and (imap-capability 'AUTH=KERBEROS_V4 buffer)
        (eq imap-stream 'kerberos4)))
 
-(defun imap-kerberos4-auth (buffer)
+(defun imap-kerberos4-auth (_buffer)
   (message "imap: Authenticating using Kerberos 4...%s"
 	   (if (eq imap-stream 'kerberos4) "done" "failed"))
   (eq imap-stream 'kerberos4))
@@ -947,7 +947,7 @@ t if it successfully authenticates, nil otherwise."
 						(imap-quote-specials passwd)
 						"\""))))))
 
-(defun imap-anonymous-p (buffer)
+(defun imap-anonymous-p (_buffer)
   t)
 
 (defun imap-anonymous-auth (buffer)
@@ -1838,7 +1838,7 @@ See `imap-enable-exchange-bug-workaround'."
 	    (and (imap-fetch-safe '("*" . "*:*") "UID")
 		 (list (imap-mailbox-get-1 'uidvalidity mailbox)
 		       (apply 'max (imap-message-map
-				    (lambda (uid prop) uid) 'UID))))
+				    (lambda (uid _prop) uid) 'UID))))
 	  (if old-mailbox
 	      (imap-mailbox-select old-mailbox (eq state 'examine))
 	    (imap-mailbox-unselect)))))))
@@ -1884,7 +1884,7 @@ first element.  The rest of list contains the saved articles' UIDs."
 	    (and (imap-fetch-safe '("*" . "*:*") "UID")
 		 (list (imap-mailbox-get-1 'uidvalidity mailbox)
 		       (apply 'max (imap-message-map
-				    (lambda (uid prop) uid) 'UID))))
+				    (lambda (uid _prop) uid) 'UID))))
 	  (if old-mailbox
 	      (imap-mailbox-select old-mailbox (eq state 'examine))
 	    (imap-mailbox-unselect)))))))
@@ -1893,7 +1893,7 @@ first element.  The rest of list contains the saved articles' UIDs."
   (with-current-buffer (or buffer (current-buffer))
     (imap-message-appenduid-1 (imap-utf7-encode mailbox))))
 
-(defun imap-message-append (mailbox article &optional flags date-time buffer)
+(defun imap-message-append (mailbox article &optional _flags _date-time buffer)
   "Append ARTICLE (a buffer) to MAILBOX on server in BUFFER.
 FLAGS and DATE-TIME is currently not used.  Return a cons holding
 uidvalidity of MAILBOX and UID the newly created article got, or nil