Line numbers returned by rmarkdown::render_site are usually incorrect. For example, I am right now trying to build the R for Data Science book (Github repo). When the build gets to rmarkdown-formats.Rmd, I get an error saying that I am missing a package called leaflet in lines 34-35. This error is at the bottom of build output.txt.

Here's the problem:

• Lines 34-35 have nothing to do with loading any library. Line 34 is blank, line 35 is just ```yaml. (full file, and yes, the line numbers there match the line numbers indicated in RStudio)
• Leaflet is first loaded on line 164.

I have built a few publicly available books in the past few days, and I have seen this bug multiple times.

To reproduce this one, download the R4DS book and try to build it. Make sure you do not have the leaflet package installed.

xfun::session_info('rmarkdown') output: session info.txt

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