support for splitting lua scripts into parts

without polluting the output of #DFHack ls

docs/changelog.txt

@@ -56,6 +56,7 @@ changelog.txt uses a syntax similar to RST, with a few special sequences:
 
 ## Lua
 - Added a ``ref_target`` field to primitive field references, corresponding to the ``ref-target`` XML attribute
+- Support for splitting scripts into multiple files without polluting the output of '#DFHack ls'. Scripts that end in '-internal.lua' will not be listed, but but they can still be 'require'd from other scripts.
 
 ## Ruby
 - Updated ``item_find`` and ``building_find`` to use centralized logic that works on more screens

library/Core.cpp

@@ -301,7 +301,7 @@ static void listScripts(PluginManager *plug_mgr, std::map<string,string> &pset,
     path += '/';
     for (size_t i = 0; i < files.size(); i++)
     {
-        if (hasEnding(files[i], ".lua"))
+        if (hasEnding(files[i], ".lua") && !hasEnding(files[i], "-internal.lua"))
         {
             string help = getScriptHelp(path + files[i], "--");
             string key = prefix + files[i].substr(0, files[i].size()-4);