rockbox/manual/plugins/lua.tex

\subsection{Lua scripting language}

To quote from the Lua website (\url{http://www.lua.org}), Lua is a ``powerful,
fast, lightweight, embeddable scripting language''. Select a \fname{.lua} file
in the \setting{File Browser} to run it. For more information on programming
in Lua, please see \url{http://www.lua.org/manual/5.1/} and
\url{http://www.lua.org/pil/}.

There are a few exceptions/additions to the Lua support in Rockbox:
\begin{description}
    \item[No floating point support.] The number type in Lua is usually float,
    however in the Rockbox implementation it is integer.
    \item[Non-supported libraries.] The coroutine, debug and math libraries are
    not supported.
    \item[Partially-supported libraries.]  The os and package libraries are only
    partially supported.
    \item[Additional libraries.] The bitlib library is integrated to support
    bitwise operators.  See \url{http://luaforge.net/projects/bitlib} and
    \url{http://lua-users.org/wiki/BitwiseOperators}.
\end{description}

Documentation of the API is still a work in progress, and the API itself is
not finalised. For the latest information, see \wikilink{PluginLua}.\\

\note{Please note that if a script does not provide a way to exit, then
the only way to exit will be to reset the \dap.}