Same xemacs file for different versions

Hi, I need to use xemacs 21.5 and 21.4 (beta and stable) depending on where I'm working. I keep a darcs repository (darcs is IMHO the best version control tool out there) of my .xemacs directory. I need to know if it's possible to do certain customizations differently for different versions of xemacs - is there a way of specifying a different custom.el file for different versions to use programatically via the init.el file, so that customize mode from different versions don't clash, for example? As a last resort, there has to be a variable or constant I can check that'll give me the current version of xemacs I'm using so I can base customizations on that. I realise I can just use different branches for different versions, and then synchronise shared patches between them (darcs makes that easy) but I'd prefer a more convenient way of doing it. Thanks _______________________________________________ XEmacs-Beta mailing list XEmacs-Beta(a)xemacs.org http://calypso.tux.org/cgi-bin/mailman/listinfo/xemacs-beta