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From matti...@apache.org
Subject svn commit: r1205968 - /subversion/trunk/contrib/client-side/emacs/vc-svn.el
Date Thu, 24 Nov 2011 19:59:07 GMT
Author: mattiase
Date: Thu Nov 24 19:59:06 2011
New Revision: 1205968

URL: http://svn.apache.org/viewvc?rev=1205968&view=rev
Log:
We only keep vc-svn.el in our tree for the benefit of Emacs 21 which
has no vc-mode for Subversion at all, and dsvn.el needs one. Clarify
that, and add code to make sure it isn't accidentally used with newer
Emacses - something that has occurred from time to time, causing
confusion and anger.

* contrib/client-side/vc-svn.el
  (comment): Clarify the file's purpose.
  (toplevel): Signal an error if used with Emacs 22 or newer, instead of
              failing later in mysterious ways.

Modified:
    subversion/trunk/contrib/client-side/emacs/vc-svn.el

Modified: subversion/trunk/contrib/client-side/emacs/vc-svn.el
URL: http://svn.apache.org/viewvc/subversion/trunk/contrib/client-side/emacs/vc-svn.el?rev=1205968&r1=1205967&r2=1205968&view=diff
==============================================================================
--- subversion/trunk/contrib/client-side/emacs/vc-svn.el (original)
+++ subversion/trunk/contrib/client-side/emacs/vc-svn.el Thu Nov 24 19:59:06 2011
@@ -3,18 +3,28 @@
 
 ;;; #########################################################################
 ;;; ##                                                                     ##
-;;; ##          NOTE: THIS IS NOT THE MASTER VERSION OF VC-SVN.EL          ##
+;;; ##                NOTE: THIS FILE IS ONLY FOR EMACS 21                 ##
 ;;; ##                                                                     ##
-;;; ## The canonical vc-svn.el now lives in the FSF Emacs tree, at         ##
-;;; ## http://savannah.gnu.org/cgi-bin/viewcvs/emacs/emacs/lisp/vc-svn.el. ##
-;;; ## The version here is maintained only because it is compatible with   ##
-;;; ## older releases of Emacs, since (as of this writing) the one in the  ##
-;;; ## FSF tree hasn't made it into an official release of Emacs yet.      ##
-;;; ## Eventually it will, though, and sometime after that the version     ##
-;;; ## here will go away.                                                  ##
+;;; ## Emacs 21 does not come with a working vc-mode for Subversion, and   ##
+;;; ## in particular, dsvn.el needs one. This file is provided for those   ##
+;;; ## who use that Emacs version.					   ##
 ;;; ##                                                                     ##
+;;; ## Emacs 22 and newer versions come with a Subversion-capable vc-mode  ##
+;;; ## and should not use this file.					   ##
+;;; ##									   ##
+;;; ## This file is a mild fork of vc-svn.el from the Emacs source tree.   ##
+;;; ## It may go away at some undetermined point in the future, when	   ##
+;;; ## support of Emacs 21 becomes completely irrelevant.		   ##
+;;; ## 									   ##
+;;; ## Maintenance of the vc-mode for Subversion should be done first and  ##
+;;; ## foremost in the Emacs tree, and changes done to this file only	   ##
+;;; ## when necessary.							   ##
+;;; ## 									   ##
 ;;; #########################################################################
 
+(if (> emacs-major-version 21)
+    (error "This file should only be used by Emacs versions 21 and earlier"))
+
 ;;; Writing this back end has shown up some problems in VC: bugs,
 ;;; shortcomings in the back end interface, and so on.  But I want to
 ;;; first produce code that Subversion users can use with an already



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