HTML comments create a slide

[stdedos]

Description

Quarto: 1.8.25, Ubuntu 24.04

---
title: "Reproducible Quarto Document"
format:
  revealjs:
    slide-number: true
    mouse-wheel: true
    hide-inactive-cursor: true
    incremental: true
    chalkboard:
      buttons: true
    preview-links: auto
---

<!-- comments -->

# Title {visibility="hidden"}

Subtitle

------

# Title

subtitle

I want to have some "file-level" comments on my qmd file - e.g. <!-- comments -->, but not have them render or affect anything

---

With the file's current format, the comments seem to create an empty slide (which I assume contains <!-- comments -->) - however, my markdown is "well-defined" with #-levels.
I don't want that empty slide

If I e.g. set slide-level: 0 (against default parsed of slide-level: 2), then the <!-- comments --> don't create a slide - but the {visibility="hidden"} does not work anymore.
I would wish that {visibility="hidden"} would work - and not have to manually remove the text I have written (given that I still don't have the slides under a git-repo).

[mcanouil]

<!-- comments --> is HTML comment not a general Markdown/Quarto comment syntax.

So either tell Quarto/Pandoc it's HTML and that it should not be read as markdown:

---
title: "Reproducible Quarto Document"
format: revealjs
---

```{=html}
<!-- comments -->
```

# Title 1 {visibility="hidden"}

Subtitle 1

------

# Title 2

Subtitle 2

or hide the content in a Div.

---
title: "Reproducible Quarto Document"
format: revealjs
---

:::: {.content-hidden}
My comment
:::

# Title 1 {visibility="hidden"}

Subtitle 1

------

# Title 2

Subtitle 2

[stdedos]

Both of those solutions create a slide between the Title Slide and the next slide (# Title 2) 😕

My intention is "that piece of text does not exist anywhere", and, since the slides are made per-# (or -----), there is no "slide break" there

[mcanouil]

No it does not. The solutions I proposed were tested and do exactly as intented. Your code is what is creating the "empty slide", i.e. your code contains 3 slides: a title slide, a slide with "Title 1" that is visibility="hidden" (this does not mean "do not include"), a slide with "Title 2"

---
title: "Reproducible Quarto Document"
format: revealjs
---

# Title 1 {visibility="hidden"}

Subtitle 1

------

# Title 2

Subtitle 2

[mcanouil]

{visibility="hidden"} does not work anymore.

What does that mean? When did it work? for what version?

From the documentation (https://quarto.org/docs/presentations/revealjs/advanced.html#slide-visibility), it's for level 2 slides and it does work in the documented context.

The following code has only two slides (title slide and "Another Slide Title" slide)

---
title: "Reproducible Quarto Document"
format: revealjs
---

:::: {.content-hidden}
My comment

# Title 2

-----

Subtitle 2

:::

## Slide Title {visibility="hidden"}

{{< lipsum 1 >}}

## Another Slide Title

{{< lipsum 2-2 >}}