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  1. somestring = "param=a&xyz"
  2. local stringToPrint = somestring:gsub("param=[^&]*([^&])", "param=hello%1", 1)
  3. print(stringToPrint)
Success #stdin #stdout 0s 2832KB
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stdin
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Standard input is empty
stdout
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param=helloa&xyz
https://ideone.com/tUFPRa
language:
Lua (luac 5.3.3)
created:
9 years ago
visibility:
public

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