Custom nested html tag and paragraph

1

I am having trouble to achieve having a text with nested quotes. For example, I would like to achieve this: “Lorem ‘ipsum’ dolor”

I started by creating a custom tag as follows

const doubleQuote = {
  content: "block+",
  group: "block",
  toDOM() { return ["q", 0] },
  parseDOM: [{tag: "q"}],
};

Unfortunately the code:

<q>
     Lorem
     <q>Ipsum<</q>
    dolor
</q>

is transformed automatically to 

<q>
     <p>Lorem</p>
     <q><p>Ipsum</p></q>
    <p>dolor</p>
</q>

Is there any way to get rid of the paragraphs, so I can have my text in a row?