function tagOpenAttributeValueQuoted(code) {
    if (code === marker) {
      effects.consume(code)
      marker = undefined
      return tagOpenAttributeValueQuotedAfter
    }

    if (code === codes.eof) {
      return nok(code)
    }

    if (markdownLineEnding(code)) {
      returnState = tagOpenAttributeValueQuoted
      return lineEndingBefore(code)
    }

    effects.consume(code)
    return tagOpenAttributeValueQuoted
  }
In double or single quoted attribute value.

```markdown
> | a <b c="d"> e
            ^
```

@type {State}