Rmarkdown `site_generator` case sensitivity.

[kamalsacranie]

Relevant GitHub repo located here. The bookdown source files are located in working-files/book/.

The gist of the issue is that, at least in my renv environment, rmarkdown can only find the site generator indicated by

site: bookdown::bookdown_site

in index.rmd when the file extension is Rmd. I.e. rmarkdown is file extension case sensitive when looking for the site generator. This occurs when I run rmarkdown::render_site

My scenario should be reproducible using the indicated GitHub repo.

I am using the latest remotes version of rmarkdown and bookdown

---

fun::session_info:

> xfun::session_info()
R version 4.2.0 (2022-04-22)
Platform: aarch64-apple-darwin21.3.0 (64-bit)
Running under: macOS Monterey 12.1

Locale: en_GB.UTF-8 / en_GB.UTF-8 / en_GB.UTF-8 / C / en_GB.UTF-8 / en_GB.UTF-8

Package version:
  compiler_4.2.0  graphics_4.2.0  grDevices_4.2.0 renv_0.15.5
  stats_4.2.0     tools_4.2.0     utils_4.2.0     xfun_0.32

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[kamalsacranie]

The thinking is that, even if naming your files in lowercase rmd is not best practice, the rmarkdown package should surely not be broken by this simple case difference.

[cderv]

Does it happen with bookdown ?

It reminds me on this one https://github.com/rstudio/bookdown/issues/1349 which has a PR that I still need to 🤔 about.

[kamalsacranie]

In this case I have used bookdown::bookdown_site but I also tried rmarkdown::default_site (which doesn't actually exist) which should eliminate the dependency on bookdown. In this case, there is identical behaviour whereby the rmarkdown::render_site function does not locate the input file if the extension is in lower-case but does if it is in the Rmd extension (images below).

Figure 1: unable to find site generator

Figure 2: now finds the file but can't run the site generator function

Note the file extension in each figure

[cderv]

Thank you - I'll look closer into this on rmarkdown side.