fork download 
  1. -- your code goes here
  2. x = "W-9007-mnist_1.0.0.ms"
  3. x = x:gsub("(.*)[%p]", "%1_")
  4. print(x)
Success #stdin #stdout 0.01s 5432KB
comments (?)
stdin 
Standard input is empty
stdout 
W-9007-mnist_1.0.0_ms
https://ideone.com/5BMhdt
language:
Lua (luac 5.3.3)
created:
3 years ago
visibility:
secret

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