Address some "unused lexical variable" warnings

* lisp/dframe.el (x-sensitive-text-pointer-shape, x-pointer-shape): Declare.

* lisp/eshell/esh-io.el (x-select-enable-clipboard): Declare.

* lisp/erc/erc-button.el (erc-button-add-buttons):
* lisp/eshell/em-cmpl.el (eshell-complete-parse-arguments):
* lisp/eshell/em-hist.el (eshell/history, eshell-isearch-backward):
* lisp/eshell/em-pred.el (eshell-parse-modifiers, eshell-pred-file-time):
Remove unused local variables.

lisp/ChangeLog

@@ -1,5 +1,14 @@
 2013-09-18  Glenn Morris  <rgm@gnu.org>
 
+	* dframe.el (x-sensitive-text-pointer-shape, x-pointer-shape): Declare.
+
+	* eshell/em-cmpl.el (eshell-complete-parse-arguments):
+	* eshell/em-hist.el (eshell/history, eshell-isearch-backward):
+	* eshell/em-pred.el (eshell-parse-modifiers, eshell-pred-file-time):
+	Remove unused local variables.
+
+	* eshell/esh-io.el (x-select-enable-clipboard): Declare.
+
 	* textmodes/two-column.el: Make 2C-split work for --without-x.
 	(scroll-bar-columns): Autoload.
 	(top-level): Require fringe when compiling.

lisp/dframe.el

@@ -243,6 +243,9 @@ Local to those buffers, as a function called that created it.")
   "Return non-nil if FRAME is currently available."
   (and frame (frame-live-p frame) (frame-visible-p frame)))
 
+(defvar x-sensitive-text-pointer-shape)
+(defvar x-pointer-shape)
+
 (defun dframe-frame-mode (arg frame-var cache-var buffer-var frame-name
 			      local-mode-fn
 			      &optional

lisp/erc/ChangeLog

@@ -1,3 +1,7 @@
+2013-09-18  Glenn Morris  <rgm@gnu.org>
+
+	* erc-button.el (erc-button-add-buttons): Remove unused local vars.
+
 2013-09-14  Vivek Dasmohapatra  <vivek@etla.org>
 
 	* erc.el (erc-update-mode-line-buffer):

lisp/erc/erc-button.el

@@ -267,7 +267,7 @@ specified by `erc-button-alist'."
             (inhibit-point-motion-hooks t)
             (inhibit-field-text-motion t)
             (alist erc-button-alist)
-            entry regexp data)
+            regexp)
         (erc-button-remove-old-buttons)
         (dolist (entry alist)
           (if (equal (car entry) (quote (quote nicknames)))

lisp/eshell/em-cmpl.el

@@ -370,7 +370,7 @@ to writing a completion function."
     (cl-assert (= (length args) (length posns)))
     (let ((a args)
 	  (i 0)
-	  l final)
+	  l)
       (while a
 	(if (and (consp (car a))
 		 (eq (caar a) 'eshell-operator))

lisp/eshell/em-hist.el

@@ -330,7 +330,7 @@ unless a different file is specified on the command line.")
    (and (or (not (ring-p eshell-history-ring))
 	   (ring-empty-p eshell-history-ring))
 	(error "No history"))
-   (let (length command file)
+   (let (length file)
      (when (and args (string-match "^[0-9]+$" (car args)))
        (setq length (min (eshell-convert (car args))
 			 (ring-length eshell-history-ring))
@@ -346,8 +346,7 @@ unless a different file is specified on the command line.")
       (write-history (eshell-write-history file))
       (append-history (eshell-write-history file t))
       (t
-       (let* ((history nil)
+       (let* ((index (1- (or length (ring-length eshell-history-ring))))
-	      (index (1- (or length (ring-length eshell-history-ring))))
 	      (ref (- (ring-length eshell-history-ring) index)))
 	 ;; We have to build up a list ourselves from the ring vector.
 	 (while (>= index 0)
@@ -945,7 +944,7 @@ If N is negative, search backwards for the -Nth previous match."
 (defun eshell-isearch-backward (&optional invert)
   "Do incremental regexp search backward through past commands."
   (interactive)
-  (let ((inhibit-read-only t) end)
+  (let ((inhibit-read-only t))
     (eshell-prepare-for-search)
     (goto-char (point-max))
     (set-marker eshell-last-output-end (point))

lisp/eshell/em-pred.el

@@ -306,7 +306,7 @@ predicate functions.  MOD-FUNC-LIST is a list of result modifier
 functions.  PRED-FUNCS take a filename and return t if the test
 succeeds; MOD-FUNCS take any string and preform a modification,
 returning the resultant string."
-  (let (result negate follow preds mods)
+  (let (negate follow preds mods)
     (condition-case nil
 	(while (not (eobp))
 	  (let ((char (char-after)))
@@ -399,7 +399,7 @@ returning the resultant string."
 (defun eshell-pred-file-time (mod-char mod-type attr-index)
   "Return a predicate to test whether a file matches a certain time."
   (let* ((quantum 86400)
-	 qual amount when open close end)
+	 qual when open close end)
     (when (memq (char-after) '(?M ?w ?h ?m ?s))
       (setq quantum (char-after))
       (cond

lisp/eshell/esh-io.el

@@ -118,6 +118,8 @@ from executing while Emacs is redisplaying."
   :type 'integer
   :group 'eshell-io)
 
+(defvar x-select-enable-clipboard)	; term/common-win
+
 (defcustom eshell-virtual-targets
   '(("/dev/eshell" eshell-interactive-print nil)
     ("/dev/kill" (lambda (mode)