On Mon, Feb 25, 2008 at 1:06 PM, Yasser González Fernández <yglez(a)uh.cu> wrote: Since Skin inherits from Linker, it can be done in a custom skin. In general, it can't be done with a hook unless there's a hook available in some appropriate place (the function itself, the caller, a callee, or whatever). Generally if you want a hook added, you can get one dev or another to add it to the code, if it's in a place that people will probably want to use and where there's no other way to reasonably implement the extension without hacks. Once a dev has added it to the trunk code, of course, you can hack it into your local copy (whatever version you have) and not worry about upgrade issues, since it will be there in the next release.