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  1. s="favorite\ntext Favorite" 
  2. puts s.gsub(/(f)avorite/i, '\1avourite')
Success #stdin #stdout 0s 28216KB
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stdin
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Standard input is empty
stdout
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favourite
text Favourite
https://ideone.com/YiJMPW
language:
Ruby (ruby 2.5.5)
created:
6 years ago
visibility:
secret

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