How to modify regex to allow brackets

Question

I have the following regex:

[0-9.-]+

What do I need to add to allow brackets at any point in the input string? ie '(' or ')'

Answer 1

Here is the regex that support brackets

[0-9.\-\[\]]+

here is the regex that support parenthesis

[0-9.\-\)\(]+

and both

[0-9.\-\)\(\[\]]+

Answer 2

Well, you can just add them to the regex with something like [0-9.\\)\\(-]+ but, since you're complicating the expression, you'll probably need to check for balance as well.

In other words, that regex is quite happy to accept 74.7((((((((((((2) which is not really well-formed. But, since you're original accepted ...........2.2.2.22222... , that may not be a great concern :-)