What languages/scripts does Pango support?

[Alex Kerr <alex phonething com>]

Hi,

I've hunted around but can't find a definitive list of languages or 
scripts that Pango can render. I realise it's probably changing all the 
time, but was looking at this picture: 
http://upload.wikimedia.org/wikipedia/commons/6/60/WritingSystemsoftheWorld4.png

and wondering which Pango can't render (and if so, is there an 
alternative to Pango that would render what it cannot?).

Or is it the case that if there's an OpenType font for a script, Pango 
will be able to render it correctly (including all glyph-combining and 
shaping required etc).

Many thanks,
Alex