Listing for blog post looks for title in code cell comments

[cderv]

Found by @mcanouil

quarto create project blog test-blog

than set in posts/welcome/index.qmd to

---
author: "Harlow Malloc"
date: "2025-07-08"
categories: [news, code, analysis]
image: "image.jpg"
---

```{r}
#| include: false
# A regular comment inside a code cell
print("Hello, World!")
```

{{< lipsum >}}

Not the # in comment for code cell, and no title in the YAML

Blog post has no title which is expected

But listing do promote the first header found, which leads to selecting comment

In some ways related to

• Wrong title in revealjs when including a code block #6411
• First heading transformed to title when dynamic python content #5363
• Comments in Code cells are taken as section and increment numbering #11835

[mcanouil]

The same title (from comment) is used for breadcrumbs as well.

[cscheid]

Ideally, we would wait until we have the tree-sitter parser merged for this fix.

[cscheid]

The fundamental problem is that we need an AST of the document in order to correctly find the headers, and we're using regexps. Tweaking the regexp might alleviate the symptom, but won't address the cause.

[mcanouil]

Related to:

• Books: Table of Content picks up code-block comments as chapter titles #3390