[fanf2]

Lua exposes much less of its internals than Python. For example the comment you replied to mentioned stack frames which are not exposed in Lua.

[anonymoushn]

Those are exposed via the built-in debug library, including in luajit.

[fanf2]

Oh whoops yes :-)

Note that you can only look up variables by their bytecode register number, not by name.

[jashmatthews]

IIRC that uses the Lua C API which LuaJIT supports by fully restoring the interpreter state?