[XeTeX] Absence of ligatures

[José Carlos Santos]

On 09-06-2010 16:45, José Carlos Santos wrote:

> I have been working on a text whose main font is DTL Unico:
>
> http://www.dutchtypelibrary.nl/Unico_rdrct.html
>
> I have just noticed that the "fi" and "fl" ligatures are not created. To
> be more precise: if I compile this document:
>
> \documentclass{article}
> \pagestyle{empty}
> \usepackage{xltxtra}
> \begin{document}
> \Huge
> \fontspec{DTLUnicoST}
> fi fl
> \end{document}
>
> I don't get the ligatures that I should get. Am I doing something wrong?
> Or could it be a flaw within the fonts that I am using?

I have already found a solution: to include the ligatures in the source 
(that his, to write, say, "fi" instead of "fi"").

Best regards,

José Carlos Santos