Unexpected behavior for a quarto with r code within text without any triple backticks

[MOB-Habitat]

Description

I am rendering a .qmd file with R code in it

quarto --version # 1.8.26

---
title: "test1"
---

Hello `r round(1/2*100, 2)` % . 

But the R code is NOT executed and it is treated as font 'code' and formatting.

However. this script below executes the code correctly.

---
title: "test1"
---

Hello `r round(1/2*100, 2)` % . 

```{r}
round(1/2*100, 2)
```

Why would a code chunk be needed to the inline code to be executed? Is it the expected behavior? Is there a way to still run the R code without the triple back-ticks chunk? This works :

---
title: "test1"
---

```{r}
```

Hello `r round(1/2*100, 2)` % . 

But why is the '{r}' needed?

[mcanouil]

Important

Accessibility: To improve accessibility, please add alternative text to your screenshots. This helps all users, including those using screen readers, to understand the context of the images. A brief description can make a big difference! See Good Alt Text, Bad Alt Text — Making Your Content Perceivable.

Could you properly format your post using code blocks for code and terminal outputs? Thanks.
If your code contains code blocks, you need to enclose it using more backticks, i.e., usually four ````.
See https://quarto.org/bug-reports.html#formatting-make-githubs-markdown-work-for-us.

In the future, please follow the guidelines provided when opening the new discussion/issue.

---

See the documentation and the various issues/discussions about this:

• https://quarto.org/docs/computations/inline-code.html#engine-binding

If you use inline expressions in a document that does not have any executable code blocks then you should explicitly set the engine document option to ensure that your expressions are evaluated (automatic engine binding works for blocks but not inlines).

I recommend you also read the section after: https://quarto.org/docs/computations/inline-code.html#syntax-compatibility

[MOB-Habitat]

Thank you for you patience and for the nice links!

So the solution is this :

---
title: "test1"
engine: knitr
---

test `r round(1/2*100, 2)` % .