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  1. eg_str <- "[probability space](posts/probability space.md) is ... [Sigma Field](posts/Sigma Field.md)"
  2. gsub("(?:\\G(?!^)|\\()[^()\\s]*\\K\\s+(?=[^()]*\\.md\\))", "_", eg_str, perl=TRUE)
Success #stdin #stdout 0.22s 39684KB
comments (?)
stdin 
Standard input is empty
stdout 
[1] "[probability space](posts/probability_space.md) is ... [Sigma Field](posts/Sigma_Field.md)"
https://ideone.com/G8Tclf
language:
R (R 3.5.2)
created:
5 years ago
visibility:
secret

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