Use-cases for string.gsub(str, "().", "%1")

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• Subject: Use-cases for string.gsub(str, "().", "%1")
• From: "Soni L." <fakedme@...>
• Date: 2015年8月19日 17:18:59 -0300

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Are there any use-cases for string.gsub(str, "().", "%1")?
If not, can it please become an error? It's just... weird... unexpected...

(I'm talking about the very weird number to string coercion which happens there)

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