fork(1) download 
  1. a <- "a, b, c (1, 2, 3), d, e (4, 5)"
  2. gsub(",(?=[^()]*\\))", ";", a, perl=T)
  3.  
Success #stdin #stdout 0.29s 22840KB
comments (?)
stdin 
Standard input is empty
stdout 
[1] "a, b, c (1; 2; 3), d, e (4; 5)"
https://ideone.com/swPtEc
language:
R (R 3.5.2)
created:
8 years ago
visibility:
secret

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