What minimal example or steps are needed to reproduce the bug?

a {
	background: url( 'foo.svg' crossorigin(anonymous) );
}

What minimal configuration is needed to reproduce the bug?

{
  "rules": {
    "function-url-quotes": "never"
  }
}

How did you run Stylelint?

Demo

Which Stylelint-related dependencies are you using?

{
  "stylelint": "latest",
  "stylelint-config-standard": "latest"
}

What did you expect to happen?

No problems to be reported

What actually happened?

The following was reported:

2:19-52 error Unexpected quotes around "url" function argument (function-url-quotes)

Do you have a proposal to fix the bug?

The url token (url( foo.svg ) without quotes) does not support url modifiers.
While the url function (url( 'foo.svg' ) with quotes) does support these.

Stylelint should not report issues or try to fix url functions that contain url modifiers.

Relevant specs:

• https://www.w3.org/TR/css-values-4/#url-value
• https://drafts.csswg.org/css-values-5/#request-url-modifiers