Parsing compressed CSS does not work

[alefwmm]

The parser for custom properties does not work for compressed CSS like:

:host{--my-custom-color:#F00;}

When not compressed, it works properly:

:host {
    --my-custom-color: #F00;
}

[YuJM]

try

(intdex.html )

  <style is="custom-style">
   :root {
   --my-custom-color:#F00;
   }
  </style>

(your custom-element )

  <style>
    :host{ background-color:var(--my-custom-color);
    }
  </style>

[alefwmm]

My bad, I found what the problem really is.
When the last CSS rule is a custom variable and does not have a semi-colon, the problem happens.

This is okay:

:root{--my-custom-color:#F00;}

This is not:

:root{--my-custom-color:#F00}

demo of the bug

[sorvell]

Fixed via #1948