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  1. x = c('One,,', 'Two!!!', '!!!???,,,')
  2. gr <- gregexpr("[[:punct:]]+", x, ignore.case = TRUE)
  3. mat <- regmatches(x, gr)
  4. regmatches(x, gr) <- lapply(mat, gsub, pattern="(.)", replacement="\\\\\\1")
  5. cat(x, sep="\n")
  6.  
Success #stdin #stdout 0.15s 178496KB
comments (?)
stdin 
Standard input is empty
stdout 
One\,\,
Two\!\!\!
\!\!\!\?\?\?\,\,\,
https://ideone.com/iJYust
language:
R (R 3.5.2)
created:
8 years ago
visibility:
public

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