[lltx] broken dash ligatures

[Philipp Stephani]

Am 08.05.2011 um 23:49 schrieb Stephan Hennig:

> Hi,
> 
> I'm observing broken dash ligatures with certain Microsoft fonts
> (including Cambria).  The attached code tests the -- and --- ligatures
> on a number of fonts distributed by TeX Live, the Google font library
> and Windows 7.  The ligatures work for the TeX Live and Google fonts,
> but fail for all but one Windows 7 fonts (Franklin Gothic Medium).  The
> PDF file can be downloaded at
> <URL:http://home.arcor.de/stephanhennig/Downloads/dashes.pdf>, ca. 200 kB.
> 
> Is this a known problem?

Not known to me until now at least. Is probably related to luaotfload, I've reported the issue at https://github.com/khaledhosny/luaotfload/issues/29
For the moment, try to avoid the legacy ligatures.