[XeTeX] Contextual Ligature Problems with OT Tamil Font Converted to AAT

[Philip TAYLOR (Webmaster, Ret'd)]

Peter Dyballa wrote:

> You could specify the renderer engine! Fontspec allows
>
> \fontspec[Renderer=AAT]{font}

Is this meaningfully true for all platforms ?  One of the
few downsides to XeTeX is that sometimes a feature is
platform-dependent yet the documentation and/or correspondence
never mentions this fact.

Philip Taylor