Inline R code chunks are executed in commented code

[thothal]

Consider this minimal example:

---
title: "Inline R code gets executed in commented code"
output: html_document
---

<!-- # Section 1 -->

<!-- ```{r} -->
<!-- x <- 1 -->
<!-- ``` -->

<!-- The value of `x` is `r x`. -->

This will throw an error:

processing file: bug.Rmd |......................................................................| 100% Quitting from lines 2-15 (bug.Rmd) Error: ! object 'x' not found

Execution halted

Is this behaviour by design? My intuition was that code which is commented is not evaluated. Is it at least worth to mention this explicitly (if it is already excuse my ignorance ;))

---

xfun::session_info('rmarkdown')
# R version 4.2.2 (2022-10-31 ucrt)
# Platform: x86_64-w64-mingw32/x64 (64-bit)
# Running under: Windows Server x64 (build 17763), RStudio 2022.7.2.576

# Locale:
#   LC_COLLATE=English_United Kingdom.1252  LC_CTYPE=English_United Kingdom.1252   
#   LC_MONETARY=English_United Kingdom.1252 LC_NUMERIC=C                           
#   LC_TIME=English_United Kingdom.1252    

# Package version:
#   base64enc_0.1.3   bslib_0.5.1       cachem_1.0.8      cli_3.6.1         digest_0.6.33     ellipsis_0.3.2   
#   evaluate_0.21     fastmap_1.1.1     fontawesome_0.5.2 fs_1.6.3          glue_1.6.2        graphics_4.2.2   
#   grDevices_4.2.2   highr_0.10        htmltools_0.5.6   jquerylib_0.1.4   jsonlite_1.8.7    knitr_1.43       
#   lifecycle_1.0.3   magrittr_2.0.3    memoise_2.0.1     methods_4.2.2     mime_0.12         R6_2.5.1         
#   rappdirs_0.3.3    rlang_1.1.1       rmarkdown_2.24    sass_0.4.7        stats_4.2.2       stringi_1.7.12   
#   stringr_1.5.0     tinytex_0.46      tools_4.2.2       utils_4.2.2       vctrs_0.6.3       xfun_0.40        
#   yaml_2.3.7       

# Pandoc version: 2.19.2

---

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[yihui]

Duplicate of

• 1363 and

• 1567.

Possible solutions (workarounds): https://github.com/rstudio/rmarkdown/issues/974#issuecomment-934080652 and https://github.com/yihui/knitr/issues/1567#issuecomment-401950933

[github-actions[bot]]

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[yihui]

Just for the record, commented-out R code is ignored in litedown: https://github.com/yihui/litedown