Greetings!
I'm running MacTeX2013 pre-release, on a system running MacOSX 10.7.5. I've
installed all the latest packages via tlmgr through this morning. The header
line from the .log file says:
This is LuaTeX, Version beta-0.76.0-2013051018 (rev 4627)
(format=lualatex 2013.5.12)
Consider the following MWE; Garamond Premier Pro is a system font distributed
with Macs:
\documentclass{article}
\usepackage{fontspec}
\setmainfont[Ligatures={Common,Rare}]{Garamond Premier Pro}
\begin{document}
off fit fly office baffle
act stab spoon
\end{document}
Since running the latest round of updates on all packages, neither the "common"
ligatures (see the words in the first line after \begin{document} nor the
"rare" ligatures (the following line) are being produced any longer. This
problem also occurs if I use the font "Sabon Next LT Pro Regular".
In contrast, if I use the font "EB Garamond" (a "free" opentype font(), the
common ligatures are generated but *not* the rare ones. Finally, if I use
"Latin Modern Roman", the common ligatures are also produced correctly; of
course, Latin Modern doesn't feature "rare" ligatures, so I can't tell if the
problem with rare ligatures not being produced extends to Latin Modern Roman...
I've never experienced a problem like this before. Are there some font cache
file I need to wipe out and rebuild, or is the problem seated at some deeper,
darker level?