Replace (default-value 'enable-multibyte-characters) with t

Since Emacs-24, (default-value 'enable-multibyte-characters) can't be
changed any more, so we can remove all code which checks this value.

* lisp/x-dnd.el (x-dnd-handle-file-name):
* lisp/w32-fns.el (w32-set-default-process-coding-system):
* lisp/textmodes/ispell.el (ispell-send-string):
* lisp/term/internal.el (dos-codepage-setup):
* lisp/tar-mode.el (tar-header-block-tokenize, tar--extract):
* lisp/startup.el (command-line):
* lisp/server.el (server-process-filter):
* lisp/net/browse-url.el (browse-url-file-url):
* lisp/menu-bar.el (menu-bar-options-menu, menu-bar-describe-menu):
* lisp/mail/sendmail.el (mail-setup):
* lisp/mail/rmail.el (rmail-mode, rmail-get-new-mail):
* lisp/mail/rfc2047.el (rfc2047-encode-message-header):
* lisp/mail/emacsbug.el (report-emacs-bug):
* lisp/international/mule-diag.el (mule-diag):
* lisp/files.el (find-file-noselect-1):
* lisp/dos-fns.el (dos-set-default-process-coding-system):
* lisp/arc-mode.el (archive-mode):
* lisp/international/mule-cmds.el (mule-menu-keymap)
(set-default-coding-systems, set-language-info)
(set-language-environment, standard-display-european-internal)
(set-locale-environment): Simplify code.

1 files changed, 3 insertions, 5 deletions

diff --git a/lisp/textmodes/ispell.el b/lisp/textmodes/ispell.el
index 9288a77ba3e..512dfcfa6a7 100644
--- a/lisp/textmodes/ispell.el
+++ b/lisp/textmodes/ispell.el
@@ -1818,11 +1818,9 @@ Only works for Aspell and Enchant."
         (setq default-directory defdir)
         (insert string)
         (if (not (memq cmd cmds-to-defer))
-            (let (coding-system-for-read coding-system-for-write status)
-              (if (and (boundp 'enable-multibyte-characters)
-                       enable-multibyte-characters)
-                  (setq coding-system-for-read (ispell-get-coding-system)
-                        coding-system-for-write (ispell-get-coding-system)))
+            (let* ((coding-system-for-read (ispell-get-coding-system))
+                   (coding-system-for-write coding-system-for-read)
+                   status)
               (set-buffer output-buf)
               (erase-buffer)
               (set-buffer session-buf)