1849485 - Invalid HTML created for nested lists

Status: RESOLVED DUPLICATE of bug 54479

(Thunderbird :: Message Compose Window, defect)

Description

[the.solipsist]

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:109.0) Gecko/20100101 Firefox/116.0

Steps to reproduce:

1. Compose an HTML e-mail
2. Add a nested list:

- 1
  - 1.1
  - 1.2
    - 1.2.1
  - 1.3
- 2
  - 2.1
- 3

3. Send.
4. Check the source code (ctrl + u)

Actual results:

<ul>
  <li>1</li>
  <ul>
    <li>1.1</li>
    <li>1.2</li>
    <ul>
      <li>1.2.1</li>
    </ul>
    <li>1.3</li>
  </ul>
  <li>2</li>
  <ul>
    <li>2.1</li>
    <ul>
      <li>2.1.1</li>
    </ul>
  </ul>
  <li>3</li>
</ul>

This is invalid HTML. The W3C HTML validator notes: "Element ul not allowed as child of element ul in this context."

Expected results:

Valid HTML should have been generated:

<ul>
<li>1
<ul>
<li>1.1</li>
<li>1.2
<ul>
<li>1.2.1</li>
</ul>
</li>
<li>1.3</li>
</ul>
</li>
<li>2
<ul>
<li>2.1
<ul>
<li>2.1.1</li>
</ul>
</li>
</ul>
</li>
<li>3</li>
</ul>

Comment 1

[Francesco]

Dupe of bug 54479.