[PATCH] Disable VC when Emacs is noninteractive -batch

[Michael Olson <mwolson@gnu.org>]

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I've noticed lately that VC can behave badly when trying to build one of
my Emacs Lisp add-on programs.  If a file has been deleted at some
point, it will interrupt the build to prompt me about whether to restore
it -- this is a show-stopper.  Also, even when building Emacs (as of a
week ago, at least), VC prints several spurious messages on the console;
they are harmless in this case, but nonetheless provide needless
clutter.

I think that VC should be disabled by default when emacs is passed the
-batch option.  The attached patch implements this.  Is it OK if I
install it?  VC is supposed to be for working interactively with version
control systems, so I can't see any reason not to install the patch.


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*** lisp/vc-hooks.el	2007-08-05 15:31:30.000000000 -0400
--- lisp/vc-hooks.el.new	2007-08-05 15:30:34.000000000 -0400
***************
*** 62,68 ****
    :type 'regexp
    :group 'vc)
  
! (defcustom vc-handled-backends '(RCS CVS SVN SCCS Bzr Git Hg Arch MCVS)
    ;; Bzr, Git, Hg, Arch and MCVS come last because they are per-tree
    ;; rather than per-dir.
    "List of version control backends for which VC will be used.
--- 62,69 ----
    :type 'regexp
    :group 'vc)
  
! (defcustom vc-handled-backends (if noninteractive nil
!                                  '(RCS CVS SVN SCCS Bzr Git Hg Arch MCVS))
    ;; Bzr, Git, Hg, Arch and MCVS come last because they are per-tree
    ;; rather than per-dir.
    "List of version control backends for which VC will be used.

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-- 
       Michael Olson -- FSF Associate Member #652     |
 http://mwolson.org/ -- Jabber: mwolson_at_hcoop.net  |  /` |\ | | |
            Sysadmin -- Hobbies: Lisp, GP2X, HCoop    | |_] | \| |_|
Projects: Emacs, Muse, ERC, EMMS, ErBot, DVC, Planner |

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