* progmodes/sh-script.el (sh-mode): Use define-derived-mode.

lisp/ChangeLog

@@ -1,5 +1,7 @@
 2010-05-13  Stefan Monnier  <monnier@iro.umontreal.ca>
 
+	* progmodes/sh-script.el (sh-mode): Use define-derived-mode.
+
 	* dos-fns.el: Add "dos-" prefix for namespace control.
 	(convert-standard-filename): Define as alias for
 	dos-convert-standard-filename but only if applicable.

lisp/progmodes/sh-script.el

@@ -1480,7 +1480,7 @@ frequently editing existing scripts with different styles.")
 ;; mode-command and utility functions
 
 ;;;###autoload
-(defun sh-mode ()
+(define-derived-mode sh-mode prog-mode "Shell-script"
   "Major mode for editing shell scripts.
 This mode works for many shells, since they all have roughly the same syntax,
 as far as commands, arguments, variables, pipes, comments etc. are concerned.
@@ -1533,11 +1533,6 @@ indicate what shell it is use `sh-alias-alist' to translate.
 
 If your shell gives error messages with line numbers, you can use \\[executable-interpret]
 with your script for an edit-interpret-debug cycle."
-  (interactive)
-  (kill-all-local-variables)
-  (setq major-mode 'sh-mode
-	mode-name "Shell-script")
-  (use-local-map sh-mode-map)
   (make-local-variable 'skeleton-end-hook)
   (make-local-variable 'paragraph-start)
   (make-local-variable 'paragraph-separate)
@@ -1613,8 +1608,7 @@ with your script for an edit-interpret-debug cycle."
           "sh")
          (t
           sh-shell-file))
-   nil nil)
-  (run-mode-hooks 'sh-mode-hook))
+   nil nil))
 
 ;;;###autoload
 (defalias 'shell-script-mode 'sh-mode)