[pygtk] Custom gtk.Clipboard function for TextView?

[Smartboy]

So I am trying to do some custom conversions of some pango formatting
in my application when I copy text from it to the clipboard, and
created a signal which is called when something is copied from it. It
seems that it doesn't do what I want, however, and the default copy
function stays in place (the text turns out plain when I paste it in
another non-formatted textbox). Would there be any way to set the
clipboard and then keep the text from being copied as per the default
and instead using the converted text which I already have?

The snippet of code pertaining to what I want to do is attached, note
that self.ipb is the buffer for my textView.

Thanks,
Smartboy
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