Controlling messages globally

[richardjtelford]

Description

I'm trying to control messages globally in my document

---
title: "My Document"
format: html
execute:
  message: false
---

```{r}
message("This is a message") # shown
```

This will print the message, even though it was told not to.

I can turn of messages by setting warning: false

---
title: "My Document"
format: html
execute:
  warning: false
---

```{r}
message("This is a message") # hidden
```

For individual chunks, there is separate control of messages and warnings, but this seems not to be the case globally. Is there something I have missed?

This is with quarto version ‘1.10.18’

[mcanouil]

message isn't a valid option under execute:, so Quarto ignores it.
At the document level, warning controls both warnings and messages, which is why warning: false hides your message.
The options you can set under execute: are listed in the documentation: https://quarto.org/docs/computations/execution-options.html#output-options

message is specific to knitr, and the Jupyter and Julia engines have no equivalent, so it isn't a shared execute: option.
#| message: false works on a single cell because knitr handles the cell options itself.
To set it for the whole document while you keep warnings, you can pass it to knitr directly:

---
title: "My Document"
format: html
knitr:
  opts_chunk:
    message: NA
---

With message: NA, messages are left out of the document but still printed to the console while it renders. With message: false, they're hidden completely.