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  1. x<-c("Te( )st", "Test()", "Test ()", "Test ( )", "Test ,,", "Test,, ", "Test , ")
  2. gsub("\\(\\s*\\)|\\s+(?=[,)])|(?<=\\()\\s+|(,),+", "\\1", x, perl=TRUE)
  3.  
Success #stdin #stdout 0.23s 38696KB
comments (?)
stdin 
Standard input is empty
stdout 
[1] "Test"   "Test"   "Test "  "Test "  "Test,"  "Test, " "Test, "
https://ideone.com/39xzrW
language:
R (R 3.5.2)
created:
3 years ago
visibility:
secret

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