[scss] Incorrect selector specificity in hover tooltip

[infinnie]

• VSCode Version: 1.33.1
• OS Version: Windows 10

Steps to Reproduce:

1. Type the code like
   
2. Move the mouse over &__b

The selector specificity is displayed as (0, 0, 0) instead of the correct (0, 1, 0), it being a class selector.

Does this issue occur when all extensions are disabled?: Yes/No
Yes.

[parzh]

I've encountered this also with vanilla CSS (Ctrl+K, M, "css"):

... whereas it should be (0, 0, 3), according to the "Selector Specificity" link provided in the tooltip.

---

Notice how :before was prefixed with a single colon. If I prefix it with double colon instead, like in ::before, I get correct results:

[parzh]

@aeschli @octref Would you mind if somebody checks this, and closes the issue in case it is fixed? Appreciate this!

[aeschli]

I still see the issue. The selector specificity is displayed as (0, 0, 0).