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text=":ban user|:at"
new_text=text:match("^.*%|(.*)") 
if new_text == nil then new_text = text end
print(new_text)

Success #stdin #stdout 0s 2788KB

stdin

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Standard input is empty

stdout

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:at

https://ideone.com/OmngAz

language:

Lua (luac 5.3.3)

created:

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secret

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