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  1. re = /(?:\R\K|\G) /
  2. str = '  - first 
  3.   - second
  4.  
  5. this is a test
  6.  
  7.   - first 
  8.   - second
  9. '
  10. result = str.gsub(re, ' ')
  11.  
  12. puts result
Success #stdin #stdout 0.01s 6216KB
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stdin
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Standard input is empty
stdout
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  - first 
  - second

this is a test

  - first 
  - second
https://ideone.com/O3aEUz
language:
Ruby (ruby 2.5.5)
created:
3 years ago
visibility:
secret

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