[XeTeX] Checking if a font exists

[Philip Taylor (Webmaster, Ret'd)]

Heiko Oberdiek wrote:

> On Mon, Aug 30, 2010 at 08:22:53AM +0100, Jonathan Kew wrote:

>> I'm surprised no-one has suggested the straightforward, pure-xetex approach: something along these lines (untested).....

<snip>

> * It takes lots of time if the font cannot be found.
> * kpsathea complains "Invalid fontname `Myriad Pro', contains ' '
> * The error code is set because of the error message, if the
>    font cannot be found.

None the less, it still seems to be the philosophically correctly
approach (IMHO, of course).

Philip Taylor