A list with empty lines extends into the next paragraph. #714

New Issue

claunia · 2026-01-29T14:43:43Z

claunia commented

2026-01-29 14:43:43 +00:00

Originally created by @snnz on GitHub (Jan 3, 2025).

Noticed this while looking at the test samples in #839.

CommonMark spec states that a list item can begin with at most one blank line. Example 280 demonstrates this.

var result = Markdown.ToHtml("-\n\n  foo");

The result is:

<ul>
<li></li>
</ul>
<p>foo</p>

If one more empty item is added

var result = Markdown.ToHtml("-\n-\n\n  foo");

Everything is as expected again:

<ul>
<li></li>
<li></li>
</ul>
<p>foo</p>

But if a blank line is inserted between the items:

var result = Markdown.ToHtml("-\n\n-\n\n  foo");

The result is suddenly

<ul>
<li></li>
<li><p>foo</p></li>
</ul>

Isn't this strange?

Originally created by @snnz on GitHub (Jan 3, 2025). Noticed this while looking at the test samples in #839. CommonMark spec states that a list item can begin with at most one blank line. [Example 280](https://spec.commonmark.org/0.31.2/#example-280) demonstrates this. ```csharp var result = Markdown.ToHtml("-\n\n foo"); ``` The result is: ``` <ul> <li></li> </ul> foo ``` If one more empty item is added ```csharp var result = Markdown.ToHtml("-\n-\n\n foo"); ``` Everything is as expected again: ``` <ul> <li></li> <li></li> </ul> foo ``` But if a blank line is inserted between the items: ```csharp var result = Markdown.ToHtml("-\n\n-\n\n foo"); ``` The result is suddenly ``` <ul> <li></li> <li>foo</li> </ul> ``` Isn't this strange?

claunia added the bug PR Welcome! labels 2026-01-29 14:43:43 +00:00

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Reference: starred/markdig#714