::v-deep selector syntax highlighting support

[hyvyys]

• I have searched through existing issues
• I have read through docs
• I have read FAQ

Info

• Platform: Win
• Vetur version: 0.22.2
• VS Code version: 1.38.0

Problem

I believe the ::v-deep selector is not supported by the syntax highlighter in Vetur.

Reproducible Case

.checkbox-small.ui-checkbox {
  margin: 0;
  font-size: 1em;
  align-self: center;

  ::v-deep .ui-checkbox__checkmark {
    height: 1rem;
    width: 1rem;
    margin-top: 0.2rem;
  }
  ::v-deep .ui-checkbox__label-text {
    font-size: 1em;
    margin-left: 0.15em;
  }
}

.nav-wrapper {
  width: 0;

  ::v-deep .positioned {
    background: $light;
    right: $vuebar-width;
    width: 175px;
    @include pseudo;
    &::after {
      left: 100%;
      background: $light;
      width: $vuebar-width;
    }
  }
}

[andrew-boyd]

Our team is also experiencing this issue.

[octref]

Upstream issue: atom/language-sass#254

[Herbata-Sys]

Issue still occurs

[wowissu]

$vdeep: "::v-deep"

#{$vdeep} .subclass {
// ... 
}