luabridge: a new sdm.path() key: appconfigdir

Author: catharanthus

src/doc/manual/manual.tex

@@ -918,6 +918,7 @@ \subsection{\expr{sdm} global object}
 	\begin{itemize}
 		\item \luaexpr{"currentdir"}: current directory;
 		\item \luaexpr{"homedir"}: home directory of the current user;
+		\item \luaexpr{"appconfigdir"}: SDM framework configuration directory;
 		\item \luaexpr{"currentscript"}: a path to the currently executed script, or \luaexpr{nil} if it cannot be obtained;
 		\item \luaexpr{"currentscriptdir"}: a path to the directory containing the currently executed script, or \luaexpr{nil} if it cannot be obtained;
 		\item \luaexpr{"program"}: a path to the host program executable (e.g. \shellcmd{sdmhost} or \shellcmd{sdmconsole});

src/luabridge/src/luabridge.cpp

@@ -304,6 +304,9 @@ int LuaBridge::LuaMethod_path(LuaServer &lua) {
 	else if(arg=="homedir") {
 		lua.pushValue(Path::home().str());
 	}
+	else if(arg=="appconfigdir") {
+		lua.pushValue(Config::appConfigDir().str());
+	}
 	else if(arg=="currentscript"||arg=="currentscriptdir") {
 		auto const &chunkName=lua.currentChunkName();
 		if(chunkName.empty()||chunkName[0]!='@') lua.pushValue(LuaValue());