Derive some programming modes from prog-mode.

* lisp/progmodes/python.el (python-mode): Derive from prog-mode.
* lisp/progmodes/ps-mode.el (ps-mode):
* lisp/progmodes/mixal-mode.el (mixal-mode):
* lisp/progmodes/ld-script.el (ld-script-mode): Likewise.

lisp/ChangeLog

@@ -1,3 +1,10 @@
+2011-06-15  Dan Nicolaescu  <dann@ics.uci.edu>
+
+	* progmodes/python.el (python-mode): Derive from prog-mode.
+	* progmodes/ps-mode.el (ps-mode):
+	* progmodes/mixal-mode.el (mixal-mode):
+	* progmodes/ld-script.el (ld-script-mode): Likewise.
+
 2011-06-15  Martin Rudalics  <rudalics@gmx.at>
 
 	* window.el (display-buffer-alist): Trim default value to avoid

lisp/progmodes/ld-script.el

@@ -168,7 +168,7 @@
   "Default font-lock-keywords for `ld-script-mode'.")
 
 ;;;###autoload
-(define-derived-mode ld-script-mode nil "LD-Script"
+(define-derived-mode ld-script-mode prog-mode "LD-Script"
    "A major mode to edit GNU ld script files"
   (set (make-local-variable 'comment-start) "/* ")
   (set (make-local-variable 'comment-end)   " */")

lisp/progmodes/mixal-mode.el

@@ -1103,7 +1103,7 @@ Assumes that file has been compiled with debugging support."
     (error "mixvm.el needs to be loaded to run `mixvm'")))
 
 ;;;###autoload
-(define-derived-mode mixal-mode fundamental-mode "mixal"
+(define-derived-mode mixal-mode prog-mode "mixal"
   "Major mode for the mixal asm language."
   (set (make-local-variable 'comment-start) "*")
   (set (make-local-variable 'comment-start-skip) "^\\*[ \t]*")

lisp/progmodes/ps-mode.el

@@ -485,7 +485,7 @@ If nil, use `temporary-file-directory'."
 ;; PostScript mode.
 
 ;;;###autoload
-(define-derived-mode ps-mode fundamental-mode "PostScript"
+(define-derived-mode ps-mode prog-mode "PostScript"
   "Major mode for editing PostScript with GNU Emacs.
 
 Entry to this mode calls `ps-mode-hook'.

lisp/progmodes/python.el

@@ -2420,7 +2420,7 @@ without confirmation."
 (defvar python-mode-running)            ;Dynamically scoped var.
 
 ;;;###autoload
-(define-derived-mode python-mode fundamental-mode "Python"
+(define-derived-mode python-mode prog-mode "Python"
   "Major mode for editing Python files.
 Turns on Font Lock mode unconditionally since it is currently required
 for correct parsing of the source.