Remove some tests for defunct system-types.

* lisp/vc/ediff-wind.el (ediff-setup-control-frame):
* lisp/vc/ediff-ptch.el (ediff-default-backup-extension):
* lisp/vc/ediff-diff.el (ediff-shell, ediff-diff-options)
(ediff-exec-process): Remove system-types emx, windows-95.

4 files changed, 24 insertions, 22 deletions

diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index 26648fedece..43589198bea 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,5 +1,10 @@
 2010-10-08  Glenn Morris  <rgm@gnu.org>
 
+	* vc/ediff-wind.el (ediff-setup-control-frame):
+	* vc/ediff-ptch.el (ediff-default-backup-extension):
+	* vc/ediff-diff.el (ediff-shell, ediff-diff-options)
+	(ediff-exec-process): Remove system-types emx, windows-95.
+
 	* net/browse-url.el (browse-url-xdg-open): Shell-quote url.  (Bug#7166)
 
 2010-10-07  Chong Yidong  <cyd@stupidchicken.com>
diff --git a/lisp/vc/ediff-diff.el b/lisp/vc/ediff-diff.el
index 4316b6e4d93..70352751d8d 100644
--- a/lisp/vc/ediff-diff.el
+++ b/lisp/vc/ediff-diff.el
@@ -1,7 +1,8 @@
 ;;; ediff-diff.el --- diff-related utilities
 
-;; Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
-;;   2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+;; Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
+;;   2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
+;;   Free Software Foundation, Inc.
 
 ;; Author: Michael Kifer <kifer@cs.stonybrook.edu>
 ;; Package: ediff
@@ -54,8 +55,7 @@ Must produce output compatible with Unix's diff3 program."
 (fset 'ediff-set-actual-diff-options '(lambda () nil))
 
 (defcustom ediff-shell
-  (cond ((eq system-type 'emx) "cmd") ; OS/2
-	((memq system-type '(ms-dos windows-nt windows-95))
+  (cond ((memq system-type '(ms-dos windows-nt))
 	 shell-file-name) ; no standard name on MS-DOS
 	(t  "sh")) ; UNIX
   "The shell used to run diff and patch.
@@ -85,7 +85,7 @@ are `-I REGEXP', to ignore changes whose lines match the REGEXP."
   (ediff-set-actual-diff-options))
 
 (defcustom ediff-diff-options
-  (if (memq system-type '(ms-dos windows-nt windows-95)) "--binary" "")
+  (if (memq system-type '(ms-dos windows-nt)) "--binary" "")
   "Options to pass to `ediff-diff-program'.
 If Unix diff is used as `ediff-diff-program',
 then a useful option is `-w', to ignore space.
@@ -1229,15 +1229,14 @@ delimiter regions"))
 	  (with-current-buffer buffer
 	    (erase-buffer)
 	    (setq default-directory directory)
-	    (if (or (memq system-type '(emx ms-dos windows-nt windows-95))
+	    (if (or (memq system-type '(ms-dos windows-nt))
 		    synch)
-		;; In OS/2 (emx) do it synchronously, since OS/2 doesn't let us
+		;; In Windows do it synchronously, since Windows doesn't let us
 		;; delete files used by other processes. Thus, in ediff-buffers
 		;; and similar functions, we can't delete temp files because
 		;; they might be used by the asynch process that computes
 		;; custom diffs. So, we have to wait till custom diff
 		;; subprocess is done.
-		;; Similarly for Windows-*
 		;; In DOS, must synchronize because DOS doesn't have
 		;; asynchronous processes.
 		(apply 'call-process program nil buffer nil args)
@@ -1533,5 +1532,4 @@ affects only files whose names match the expression."
 ;; eval: (put 'ediff-with-current-buffer 'edebug-form-spec '(form body))
 ;; End:
 
-;; arch-tag: a86d448e-58d7-4572-a1d9-fdedfa22f648
 ;;; ediff-diff.el ends here
diff --git a/lisp/vc/ediff-ptch.el b/lisp/vc/ediff-ptch.el
index b6c7f6ab7ba..393bdcb673c 100644
--- a/lisp/vc/ediff-ptch.el
+++ b/lisp/vc/ediff-ptch.el
@@ -1,7 +1,8 @@
 ;;; ediff-ptch.el --- Ediff's  patch support
 
-;; Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002,
-;;   2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+;; Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
+;;   2005, 2006, 2007, 2008, 2009, 2010
+;;   Free Software Foundation, Inc.
 
 ;; Author: Michael Kifer <kifer@cs.stonybrook.edu>
 ;; Package: ediff
@@ -62,7 +63,7 @@ case the default value for this variable should be changed."
 
 ;; the default backup extension
 (defconst ediff-default-backup-extension
-  (if (memq system-type '(emx ms-dos))
+  (if (eq system-type 'ms-dos)
       "_orig" ".orig"))
 
 
@@ -841,5 +842,4 @@ you can still examine the changes via M-x ediff-files"
 ;; eval: (put 'ediff-with-current-buffer 'edebug-form-spec '(form body))
 ;; End:
 
-;; arch-tag: 2fe2161e-e116-469b-90fa-5cbb44c1bd1b
 ;;; ediff-ptch.el ends here
diff --git a/lisp/vc/ediff-wind.el b/lisp/vc/ediff-wind.el
index 8b16c5a4a12..4d6666a86f2 100644
--- a/lisp/vc/ediff-wind.el
+++ b/lisp/vc/ediff-wind.el
@@ -1,7 +1,8 @@
 ;;; ediff-wind.el --- window manipulation utilities
 
-;; Copyright (C) 1994, 1995, 1996, 1997, 2000, 2001, 2002, 2003,
-;;   2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+;; Copyright (C) 1994, 1995, 1996, 1997, 2000, 2001, 2002, 2003, 2004,
+;;   2005, 2006, 2007, 2008, 2009, 2010
+;;   Free Software Foundation, Inc.
 
 ;; Author: Michael Kifer <kifer@cs.stonybrook.edu>
 ;; Package: ediff
@@ -978,12 +979,11 @@ into icons, regardless of the window manager."
 	  (set-specifier left-toolbar-width (list ctl-frame 0))
 	  (set-specifier right-toolbar-width (list ctl-frame 0))))
 
-    ;; Under OS/2 (emx) we have to call modify frame parameters twice, in order
-    ;; to make sure that at least once we do it for non-iconified frame.  If
-    ;; appears that in the OS/2 port of Emacs, one can't modify frame
-    ;; parameters of iconified frames.  As a precaution, we do likewise for
-    ;; windows-nt.
-    (if (memq system-type '(emx windows-nt windows-95))
+    ;; As a precaution, we call modify frame parameters twice, in
+    ;; order to make sure that at least once we do it for
+    ;; a non-iconified frame.  (It appears that in the Windows port of
+    ;; Emacs, one can't modify frame parameters of iconified frames.)
+    (if (eq system-type 'windows-nt)
 	(modify-frame-parameters ctl-frame adjusted-parameters))
 
     ;; make or zap toolbar (if not requested)
@@ -1310,5 +1310,4 @@ It assumes that it is called from within the control buffer."
 ;; eval: (put 'ediff-with-current-buffer 'edebug-form-spec '(form body))
 ;; End:
 
-;; arch-tag: 73d9a5d7-eed7-4d9c-8b4b-21d5d78eb597
 ;;; ediff-wind.el ends here