Indentation issues for operators (%>% and +) in Quarto R chunks in VS Code

I’m experiencing issues with code indentation in Quarto R chunks while editing in VS Code, but everything works fine in plain R files. Specifically, when using operators like the pipe (%>%) or + (in ggplot2), the code does not indent correctly after I type them. However, the formatting is applied when I save the document, which interrupts the editing flow.

In plain R files, the indentation works as expected immediately after inserting these operators, but this behavior is inconsistent in Quarto documents.

Environment

• OS: macOS 15.0.1
• Quarto Version: 1.6.37
• VS Code Version: 1.95.3

Steps to Reproduce

Open the following Quarto file in VS Code:

---
title: "R Code Indentation"
date: 2024-11-24
---

```{r}
#| label: ggplot

library(dplyr)
library(ggplot2)

ggplot(diamonds, aes(x = carat, y = price)) +
geom_point()  # Indentation issue with `+`
```

```{r}
#| label: pipe

diamonds %>%
select(1:3)  # Indentation issue with `%>%`
```

VS Code Settings

My settings.json in VS Code looks like below:

{
  "editor.formatOnSave": true,
  "editor.formatOnPaste": true,
  "editor.formatOnType": true,
  "editor.quickSuggestions": {
    "other": "on",
    "comments": "on",
    "strings": "on"
  },
  "editor.suggest.showSnippets": true,
  "editor.suggest.localityBonus": true,
  "r.rterm.mac": "path_to_my_radian/bin/radian",
  "r.bracketedPaste": true,
  "r.removeLeadingComments": true,
  "r.plot.useHttpgd": true,
  "[quarto]": {
    "editor.defaultFormatter": "quarto.quarto",
    // "editor.defaultFormatter": "REditorSupport.r", // also tried that...
    "editor.wordWrap": "wordWrapColumn",
    "editor.snippetSuggestions": "top"
  },
  "[r]": {
    "editor.defaultFormatter": "REditorSupport.r",
    "editor.wordWrap": "wordWrapColumn",
    "editor.snippetSuggestions": "top"
  },
  "[rmd]": {
    "editor.defaultFormatter": "REditorSupport.r",
    "editor.wordWrap": "wordWrapColumn",
    "editor.snippetSuggestions": "top"
  },
  "[yaml]": {
    "editor.defaultFormatter": "quarto.quarto"
  }
}

What I Have Tried:

• Adjusting editor.formatOnSave and editor.formatOnType in my VS Code settings.
• Ensuring that the R Language Server (languageserver) is running.
• Changing settings for [quarto] and [r] in my settings.json file.

Despite these efforts, indentation for the Quarto R chunks does not work as intended while editing. It only takes effect on save.

Expected Behavior:

• Indentation should work immediately after inserting a pipe in Quarto R chunks, similar to how it works in plain R files.

Any Suggestions?

• Is there a specific configuration I’m missing for Quarto or VS Code to achieve consistent behavior?
• Could this be a limitation of the R Language Server in Quarto documents?

Start by reproducing the supplied Quarto document in VS Code with the listed formatting settings, then compare indentation after %>% and + with a plain R file. Trace the Quarto R-chunk handling and R language-server integration; done means operators trigger the expected indentation while typing, not only after saving.