Why is mark-active defined in ps-print.el ?

[Kim F. Storm]

For some reason, I have code in my .emacs which can be reduced to this line
to illustrate the problem:

(require 'ps-print)

Now, if I do

C-h v mark-active

I get this:

mark-active is a variable defined in `ps-print.el'.


I found this in ps-print.el:

(cond ((featurep 'xemacs)               ; xemacs
       [...]
       )
      (t                                ; emacs 22 or higher
       (defvar mark-active nil)
       [...]


Why does ps-print.el defvar a built-in variable??


In GNU Emacs 22.0.93.12 (i686-pc-linux-gnu, X toolkit, Xaw3d scroll bars)
 of 2007-02-16 on kfs-l.imdomain.dk
X server distributor `The XFree86 Project, Inc', version 11.0.40300000
configured using `configure  'CFLAGS=-O0 -g''

--
Kim F. Storm <address@hidden> http://www.cua.dk