function commentOpenInside(code) {
    if (code === codes.dash) {
      effects.consume(code)
      // // Do not form containers.
      // tokenizer.concrete = true
      return self.interrupt ? ok : continuationDeclarationInside
    }

    return nok(code)
  }
After `<!-`, inside a comment, at another `-`.

```markdown
> | <!--xxx-->
       ^
```

@type {State}