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Bugs in Hello World

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I came across this post, which discusses the lack of error validation in naive "Hello World" programs in different languages: https://blog.sunfishcode.online/bugs-in-hello-world/
Lua isn't mentioned but it would fail this author's test. I do not personally think it is an issue with the language, but to make it work in Lua one would have to write Hello World like this:
 io.stdout:write("Hello World!\n")
 assert(io.stdout:flush())
-- 
Pierre Chapuis

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