[XeTeX] 'mark' and 'mkmk' features

Jonathan Kew jonathan_kew at sil.org
Mon Feb 13 09:57:36 CET 2006


On 13 Feb 2006, at 2:24 am, Will Robertson wrote:

> Hello,
>
> On the eve of the release of fontspec 1.9, I noticed that the  
> various SIL fonts contain the 'mark' and 'mkmk' OpenType features.  
> They look like they need to be included in fontspec under the  
> "diacritics" feature, but if so I'd like an example...
>
> (Or are these "automatic" features and not generally de-activated,  
> like 'kern'?)

They are enabled by default in the "generic" (Latin etc) engine, so  
you'll get them unless you explicitly turn them off. It's hard to  
think of any reason to do this, unless you wanted to demonstrate how  
diacritics might appear in the absence of proper positioning support.

Try
% - - - -
\font\x="Charis SIL" at 12pt
\font\y="Charis SIL:-mark,-mkmk" at 12pt

\x  
T^^^^0308^^^^0301h^^^^0303^^^^0320i^^^^0304^^^^0302s^^^^0324^^^^0325  
is a test.

\y  
T^^^^0308^^^^0301h^^^^0303^^^^0320i^^^^0304^^^^0302s^^^^0324^^^^0325  
is a test.

\end
% - - - -

JK



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