[XeTeX] Turning off OT features

Peter Baker psb6m at virginia.edu
Fri Apr 10 00:22:37 CEST 2009

David Perry wrote:
> I'm fairly new to TeX and XeTeX, but have an extensive background in 
> Unicode and OpenType.  (Yay XeTeX!)  This may be a silly question, but I 
> haven't found the answer in the various docs I've looked at.
> I can turn on OT features easily enough:
> \addfontfeature{Style=Historic,Ligatures=Historical}
> same silly distant  \quad AA aa AY ay ag al
> which gives me long s and funky medieval ligatures when I use the 
> appropriate font.  The only way I know to turn the features OFF (so they 
> don't affect the entire rest of the document) is to put an extra pair of 
> braces around the whole thing, {\addfontfeature . . . al }
> This works OK, but is awkward when more than a line or two of text is 
> involved.  Is there a better way?  I tried some \begin and \end stuff 
> but that didn't work.
> Thanks - David
> _

Look into \newenvironment. Declare the environment this way in the 
document prologue:


And now

blah blah blah.

should do what you want. I think.


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