[XeTeX] Absence of ligatures

José Carlos Santos jcsantos at fc.up.pt
Thu Jun 10 11:31:20 CEST 2010

On 09-06-2010 21:09, Khaled Hosny 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?
>>>>>> Either the font lacks proper OpenType layout code, or you need to
>>>>>> explicitly select certain OpenType script/language, you can try setting
>>>>>> Language=Latin, Language=Default, Script=Latin or any combination of
>>>>>> them and if it works.
>>>>> Thanks for the reply. Can you please tell me how should I set, say,
>>>>> Language=Latin?
>>>> The same way you set Liagtures=Common.
>>> Thanks. I tried every combination that I could think of and worked.
>> Oops! I meant to write "and it did not work" here.
> If you have otfinfo command line tool (included in texlive)

I use MiKTeX, not texlive, and MiKTeX doesn't have that command line 
tool. But that's not a problem; I have downloaded it.

>, you can try:
> otfinfo -s /path/to/font.otf
> Where '/path/to/font.otf' is the full path to your font file, It should
> list font supported scripts and languages, then try:

I get

latn            Latin

> otfinfo --script=SCRIPT -f /path/to/font.otf

All I get is

kern    Kerning

It is short, isn't it? It seems that it does not support ligatures. I 
did the same thing with another font (Akkurat Regular) and I got:

cpsp    Capital Spacing
frac    Fractions
kern    Kerning
liga    Standard Ligatures
ordn    Ordinals
ss01    Stylistic Set 1
zero    Slashed Zero

> Where SCRIPT is one of the returned values of the first command. This
> should show what script/language/feature combinations supported by the
> font.

Thank you very much for your help.

Best regards,

José Carlos Santos

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