## Why is this an issue?

Multiple spaces in a regular expression can make it hard to tell how many spaces should be matched. It’s more readable to use only one space and then indicate with a quantifier how many spaces are expected.

### Noncompliant code example

    "/Hello,   world!/"

### Compliant solution

    "/Hello, {3}world!/"

### Exceptions

If the extended modifier is set, whitespaces are ignored. In this case no issue should be triggered, because the whitespaces may be intended to improve readability.