Comment 28 for bug 349914

(In reply to comment #22)

Karl, do you have test case that context_substitute or create_font is called?

Even if pango is 1.14 (min version required gecko) in CentOS 5, these callbacks are never called on any case.
Although default_substitute (pango_fc_default_substitute) will call from pango_fc_font_map_get_patterns/pango_fc_font_map_get_resolution into pango, since gfx implementation has a lot of callback functions such as load_font and get_resolution, it is never called.

I would like to know the environment that context_substitute or create_font is really called.