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Hi there,

This is a difficult one: I have an OS thread that keeps hold of a function in lua with luaL_ref(L, LUA_REGISTRYINDEX). But the OS thread is created in Lua:

thread = rk.Thread(function()
  -- do this and that

After some time, the thread is garbage collected.

How can I remove the function from the registry ? I cannot call luaL_unref in the rk.Thread destructor (segfault).

Do I need to hold it in the first place ? What about the thread created with lua_newthread ?