Knitr throwing error on commented-out R code

[woodwards]

I have a long RMD document which Runs correctly, but is throwing an error when Knitting, on this comment line (which is not in a chunk).

<!-- Average soil moisture = `r round(mean(data_sm$mean_sm, na.rm=TRUE))` -->

Knitr is trying to evaluate the R expression between the backticks in this line (there is an expected error because data_sm doesn't exist).

It works if I remove the backticks.

[yihui]

Duplicate of #1363

Currently you have to comment out the inline code, e.g.,

<!-- Average soil moisture = `r #round(mean(data_sm$mean_sm, na.rm=TRUE))` -->

[github-actions]

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[yihui]

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