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diff --git a/Master/texmf-dist/source/latex/fontspec/fontspec-doc-luatex.tex b/Master/texmf-dist/source/latex/fontspec/fontspec-doc-luatex.tex new file mode 100644 index 00000000000..c2ae7daf5ad --- /dev/null +++ b/Master/texmf-dist/source/latex/fontspec/fontspec-doc-luatex.tex @@ -0,0 +1,43 @@ + + +\part{\LuaTeX-only font features} +\label{sec:luatex-features} + +\section{Custom font features} + +Pre-2016, it was possible to load an OpenType font feature file to define new OpenType features for a selected font. This facility was particularly useful to implement custom substitutions, for example. As of \TeX{}Live~2016, \LuaTeX/\pkg{luaotfload} no longer supports this feature, but provides its own internal mechanisms for an equivalent interface. + +Any documents using `feature file' options will need to transition to the new interface. +Figure~\ref{fig:featurefile} shows an example. +Please refer to the \LuaTeX/\pkg{luaotfload} documentation for more details. + +\begin{figure} +\caption{An example of custom font features.} +\label{fig:featurefile} +\hrule +\begin{Verbatim} +\documentclass{article} +\usepackage{fontspec} +\directlua{ + fonts.handlers.otf.addfeature { + name = "oneb", + { + type = "substitution", + data = { + ["1"] = "one.ss01", + }, + }, + "feature oneb for vollkorn font", + } +} +\setmainfont{Vollkorn-Regular.otf}[RawFeature=+oneb] +\begin{document} +1234567890 +\end{document} +\end{Verbatim} +\hrule +\end{figure} + + + + |