[Evolution-hackers] Why is GnomePrintContext still in GtkHtml?

[Matthew Barnes <mbarnes redhat com>]

So I'm a little bit confused about this recent GtkPrint migration.  I'm
seeing things in the GtkHtml code like this:

        void  html_engine_print (HTMLEngine         *e,
                                 GtkPrintContext    *print_context);
        
        ...

        void
        gtk_html_print (GtkHTML *html,
                        GnomePrintContext *print_context)
        {
                g_return_if_fail (html != NULL);
                g_return_if_fail (GTK_IS_HTML (html));
        
                html_engine_print (html->engine, print_context);
        }

How does print_context magically change from a GnomePrintContext to a
GtkPrintContext?  Is this an oversight or are we doing something dirty?

Matthew Barnes