False negatives for vendor-prefixed values in value lists in function-linear-gradient-no-nonstandard-direction

[pfructuoso]

Describe the issue. Is it a bug or a feature request (new rule, new option, etc.)?

It´s a bug. False positives and negatives when vendor-prefixed values are used in function-linear-gradient-no-nonstandard-direction is still happening when using multiple values for background-image

Which rule, if any, is this issue related to?

function-linear-gradient-no-nonstandard-direction

What CSS is needed to reproduce this issue?

   .node-preview-backlink {
     /* false negative */
     background: url(image.png), -webkit-linear-gradient(top, #012345, #ABCDEF);

     /* Working as expected */
     background: -webkit-linear-gradient(top, #012345, #ABCDEF), url(image.png);
   }

What stylelint configuration is needed to reproduce this issue?

   {
"rules": {
       "function-linear-gradient-no-nonstandard-direction": true
       }
}

Which version of stylelint are you using?

7.10.1

How are you running stylelint: CLI, PostCSS plugin, Node API?

CLI interface.
stylelint test.css

Does your issue relate to non-standard syntax (e.g. SCSS, nesting, etc.)?

No, it´s standard syntax

What did you expect to happen?

Both cases on the example have the same code so no warnings should be flagged.

What actually happened (e.g. what warnings or errors you are getting)?

In "false negative" the following warning wa flagged:

   test.css
3:55  ✖  Unexpected nonstandard direction   function-linear-gradient-no-nonstandard-direction

I tried to figure out what is happening by myself and it looks like in
´lib/rules/function-linear-gradient-no-nonstandard-direction/index.js´

[jeddy3]

@pfructuoso Thank you for the report and PR!

[pfructuoso]

Can someone with better git-foo than I advise on how best to resolve the problem with the PR #2482? Thanks.

[davidtheclark]

Closed by #2496.