Typst rule does not work on markdown table

[oliviermeslin]

Bug description

I want to define a show rule to center the first row of the table. The rule works on a Typst table (embedded in a Typst chunk), but does not work on a Markdown table. I'm not sure I'm using Typst properly though.

Steps to reproduce

---
format:
  typst:
    keep-typ: true
---

```{=typst}
// This rule does work on both tables
#show table.cell.where(y: 0): set text(weight: "bold")

// This rule does not work on the Markdown table
#show table.cell.where(y: 0): set align(center)
```

```{=typst}
#table(
  columns: (0.4fr, 1fr, 1fr, 1fr),

  table.header[Month][Title][Author][Genre],
  [January], [The Great Gatsby], [F. Scott Fitzgerald], [Classic],
  [February], [To Kill a Mockingbird], [Harper Lee], [Drama],
  [March], [1984], [George Orwell], [Dystopian],
  [April], [The Catcher in the Rye], [J.D. Salinger], [Coming-of-Age],
)
```

| Month    | Title                  | Author              | Genre         |
|:---------|:-----------------------|:--------------------|:--------------|
| January  | The Great Gatsby       | F. Scott Fitzgerald | Classic       |
| February | To Kill a Mockingbird  | Harper Lee          | Drama         |
| March    | 1984                   | George Orwell       | Dystopian     |
| April    | The Catcher in the Rye | J.D. Salinger       | Coming-of-Age |

Expected behavior

The first row of the markdown table is centered.

Actual behavior

The first row of the markdown table is not centered.

Your environment

• OS: Linux
• VS Code, code-server: v4.92.2 Code: 1.92.2

Quarto check output

Quarto 1.5.57
[✓] Checking versions of quarto binary dependencies...
      Pandoc version 3.2.0: OK
      Dart Sass version 1.70.0: OK
      Deno version 1.41.0: OK
      Typst version 0.11.0: OK
[✓] Checking versions of quarto dependencies......OK
[✓] Checking Quarto installation......OK
      Version: 1.5.57
      Path: /opt/quarto/bin

[✓] Checking tools....................OK
      TinyTeX: v2024.09
      Chromium: (not installed)

[✓] Checking LaTeX....................OK
      Using: TinyTex
      Path: /home/onyxia/.TinyTeX/bin/x86_64-linux
      Version: 2024

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

[✓] Checking Python 3 installation....OK
      Version: 3.12.5 (Conda)
      Path: /opt/conda/bin/python
      Jupyter: 5.7.2
      Kernels: python3

(|) Checking Jupyter engine render....Traceback (most recent call last):
  File "/opt/quarto/share/jupyter/jupyter.py", line 21, in <module>
    from notebook import notebook_execute, RestartKernel
  File "/opt/quarto/share/jupyter/notebook.py", line 18, in <module>
    import nbformat
ModuleNotFoundError: No module named 'nbformat'
[✓] Checking Jupyter engine render....OK

[cscheid]

Please consider a Q&A post before filing a bug report. I'm going to convert this to discussions.

[oliviermeslin]

You're right, sorry for that. I'll be more cautious next time.

[gordonwoodhull]

This happens because you have specified left alignment for all columns with :----

This causes Pandoc to add column alignment

align: (left,left,left,left,),

to the table, and this takes precedence over your show rule.

One way to get the effect you want is to remove the alignment specification from your markdown table and instead set default left cell alignment via a show rule instead:

```{=typst}
#show table.cell: set align(left)
#show table.cell.where(y: 0): set align(center)
```


| Month    | Title                  | Author              | Genre         |
|----------|------------------------|---------------------|---------------|
| January  | The Great Gatsby       | F. Scott Fitzgerald | Classic       |
| February | To Kill a Mockingbird  | Harper Lee          | Drama         |
| March    | 1984                   | George Orwell       | Dystopian     |
| April    | The Catcher in the Rye | J.D. Salinger       | Coming-of-Age |

[oliviermeslin]

It works, thanks a lot @gordonwoodhull !