Equivalent to knitr::current_input()?

[MichaelChirico]

We're working on multilingual support for vignettes in {data.table}.

As part of that we'd like to add a few links naming the available languages for each vignette like:

Available languages: en | fr | zh_CN

As it stands, that requires reading the path of the current vignette since the language info is encoded there, hence knitr::current_input() is pretty useful.

@rikivillalba found litedown:::.env$input works, but obviously it'd be better to rely on an exported function:

Rdatatable/data.table#6618

[yihui]

I'll add an exported function. Thanks for the suggestion!

[yihui]

Done. You can use litedown::get_input().