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| -rw-r--r-- | luaotfload.dtx | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/luaotfload.dtx b/luaotfload.dtx index 70edf8c..9e57bac 100644 --- a/luaotfload.dtx +++ b/luaotfload.dtx @@ -400,7 +400,23 @@ and the derived files % \begin{quote} % |\font\fontname=|\meta{prefix}|:|\meta{fontname}\dots % \end{quote} -% where \meta{prefix} is either \verb|file:| or \verb|name:|. +% where \meta{prefix} is either \verb|file:| or \verb|name:|.\footnote{% +% The development version also knows two further prefixes, +% \verb|kpse:| and \verb|my:|. +% A \verb|kpse| lookup is restricted to files that can be found by +% \identifier{kpathsea} and +% will not attempt to locate system fonts. +% This behavior can be of value when an extra degree of encapsulation is +% needed, for instance when supplying a customized tex distribution. +% +% The \verb|my| lookup takes this a step further: it lets you define +% a custom resolver function and hook it into the \luafunction{resolve_font} +% callback. +% This ensures full control over how a file is located. +% For a working example see the +% \href{https://bitbucket.org/phg/lua-la-tex-tests/src/5f6a535d/pln-lookup-callback-1.tex} +% {test repo}. +% } % It determines whether the font loader should interpret the request as % a \emphasis{file name} or % \emphasis{font name}, respectively, |