Lua 5.4.0 (rc4) is now available for testing at
http://www.lua.org/work/lua-5.4.0-rc4.tar.gz
Thanks for fixing the issue I reported with the __close method not being called when exiting a do ... end block. I've run a number of tests, including about 10 million randomly generated test cases (having "load" can be useful), and all seems to be well.
(It always amazes me how fast the Lua system is, the test cases are compiled and executed at a speed of over 10000/second)
Thanks again,
Gé