Table caption not displayed for data.frame or tibble

[sda030]

Bug description

I was not able to find a registered issue for this (obvious) bug, nor in the long CrossRef Overhaul list.
Basically, table caption only shows for kable, paged, etc, and not for data.frame (default) or tibble. Same for df-print: as for simplest example (seen below).

Steps to reproduce

---
format: html
---


```{r}
#| label: tbl-tab1
#| tbl-cap: Why am I not showing if just a data frame?

mtcars[1:4, 1:4]
```

Expected behavior

Table caption should display even as data frame or tibble.

Actual behavior

?(caption)

Your environment

• IDE: RStudio 2023.06.1 Build 524
• Windows 11

Quarto check output

[>] Checking versions of quarto binary dependencies...
      Pandoc version 3.1.6: OK
      Dart Sass version 1.55.0: OK
      Deno version 1.33.4: OK
[>] Checking versions of quarto dependencies......OK
[>] Checking Quarto installation......OK
      Version: 1.4.300
      Path: C:\Program Files\Quarto\bin
      CodePage: 1252

[>] Checking basic markdown render....OK

[>] Checking Python 3 installation....OK
      Version: 3.11.4
      Path: C:/Users/py128/AppData/Local/Programs/Python/Python311/python.exe
      Jupyter: (None)

      Jupyter is not available in this Python installation.
      Install with py -m pip install jupyter

[>] Checking R installation...........OK
      Version: 4.3.1
      Path: C:/PROGRA~1/R/R-43~1.1
      LibPaths:
        - C:/Users/py128/AppData/Local/R/win-library
        - C:/Program Files/R/R-4.3.1/library
      knitr: 1.43
      rmarkdown: 2.23

[>] Checking Knitr engine render......OK

[mcanouil]

A data.frame and tibble are not table, they are plain text, thus Quarto won't add a table caption for something that is not a table.
This is not a bug.
For now, for caption to work you need to output table as markdown/latex/html.

This will change with the work ongoing on the cross-reference system.

• Epic: Crossref Overhaul #4944

I am closing this as there is nothing to do right now, beside you outputting table rather than plain text.