Regex for rectangle brackets in R

Question

Conventionally in R one can use metacharacters in a regex with two slashes, e.g. ( becomes \\(, but I find the same isn\'t true for square brackets.

mystring         


        

Answer 1

I would sidestep [ab] syntax and use (a|b). Besides working, it may also be more readable:

gsub("(\\[|\\]|\\$)","",mystring)