Hi.

Please consider:

```{r}
knitr::current_input()
```

If I save this as doc1.rmd and render it, the result is

## [1] "doc1.rmd"

If I save this as doc2.qmd and render it, the result is

[1] "doc2.rmarkdown"

My expectation for the quarto file is

[1] "doc2.qmd"

I hope you agree.

---

> xfun::session_info('knitr')
R version 4.4.2 (2024-10-31)
Platform: x86_64-pc-linux-gnu
Running under: Ubuntu 24.04.1 LTS, RStudio 2024.9.1.394

Locale:
  LC_CTYPE=en_US.UTF-8       LC_NUMERIC=C              
  LC_TIME=en_US.UTF-8        LC_COLLATE=en_US.UTF-8    
  LC_MONETARY=en_US.UTF-8    LC_MESSAGES=en_US.UTF-8   
  LC_PAPER=en_US.UTF-8       LC_NAME=C                 
  LC_ADDRESS=C               LC_TELEPHONE=C            
  LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C       

Package version:
  evaluate_1.0.1  graphics_4.4.2  grDevices_4.4.2 highr_0.11     
  knitr_1.49      methods_4.4.2   stats_4.4.2     tools_4.4.2    
  utils_4.4.2     xfun_0.49       yaml_2.3.10 

---

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