Fix false positives for variable name and important annotation in at-rule-no-unknown

[ssivanatarajan]

Clearly describe the bug

There are false positive for at-rule-unknown rule in less , if there is no space between proprty and variable

Which rule, if any, is the bug related to?

at-rule-unknown

What code is needed to reproduce the bug?

.a() {
    @box-shadow:none !important;
}

What stylelint configuration is needed to reproduce the bug?

{
  "rules": {
     "at-rule-no-unknown": true,
  }
}

Which version of stylelint are you using?

13.12.0

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

Node JS API

Does the bug relate to non-standard syntax (e.g. SCSS, Less etc.)?

Yes, it's related to Less properties

What did you expect to happen?

No warnings to be flagged.

What actually happened (e.g. what warnings or errors did you get)?

"The following warnings were flagged:"

Unexpected unknown at-rule "@box-shadow:none"

[jeddy3]

@ssivanatarajan Thanks for the report and for using the template.

I can reproduce this using the demo with:

@var:value !important;

Please consider contributing to the parser if you have time.

[ssivanatarajan]

@jeddy3 so do i need to fix this issue in https://github.com/shellscape/postcss-less ?

[jeddy3]

I believe so, although not 100% sure. You'll need to test how the parser parses:

@var:value !important;

If the AST doesn't look correct, you should report an issue with that package. The author of the parser usually welcomes pull requests to fix issues like this.

[jeddy3]

Closing as the syntax option was removed for the 14.0.0 release. (See the migration guide.)

Please consider fixing the issue upstream as the syntax is no longer bundled by Stylelint.