## 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

    Pattern.compile("hello   world");

### Compliant solution

    Pattern.compile("hello {3}world");

### Exceptions

In free-spacing mode (`Pattern.COMMENTS` flag, or with embedded flag expression `(?x)`), whitespaces are ignored. In this case no issue should be triggered, because the whitespaces may be intended to improve readability.