Convert some .el files to lexical scoping.

* bs.el (bs-refresh, bs-sort-buffer-interns-are-last)
  (bs--get-marked-string, bs--get-modified-string)
  (bs--get-readonly-string, bs--get-size-string, bs--get-name)
  (bs--get-mode-name, bs--get-file-name): Mark unused arguments.
  (bs--configuration-name-for-prefix-arg): Rename argument PREFIX-ARG.

* ehelp.el (electric-help-execute-extended)
  (electric-help-ctrl-x-prefix):
* hexl.el (hexl-revert-buffer-function):
* linum.el (linum-after-change, linum-after-scroll):
* emacs-lisp/re-builder.el (reb-auto-update): Mark unused arguments.

* help-fns.el (help-describe-category-set): Remove unused ERR variable.

1 files changed, 3 insertions, 3 deletions

diff --git a/lisp/linum.el b/lisp/linum.el
index 11e6a7f8b4f..db6e4c49977 100644
--- a/lisp/linum.el
+++ b/lisp/linum.el
@@ -1,4 +1,4 @@
-;;; linum.el --- display line numbers in the left margin
+;;; linum.el --- display line numbers in the left margin -*- lexical-binding: t -*-
 
 ;; Copyright (C) 2008-2011 Free Software Foundation, Inc.
 
@@ -174,14 +174,14 @@ and you have to scroll or press \\[recenter-top-bottom] to update the numbers."
       (setq line (1+ line)))
     (set-window-margins win width (cdr (window-margins win)))))
 
-(defun linum-after-change (beg end len)
+(defun linum-after-change (beg end _len)
   ;; update overlays on deletions, and after newlines are inserted
   (when (or (= beg end)
             (= end (point-max))
             (string-match-p "\n" (buffer-substring-no-properties beg end)))
     (linum-update-current)))
 
-(defun linum-after-scroll (win start)
+(defun linum-after-scroll (win _start)
   (linum-update (window-buffer win)))
 
 ;; (defun linum-after-size (frame)