Could reprex set an environment variable while it is rendering

[olivroy]

Like pkgdown does

Sys.getenv("IN_PKGDOWN")

Something like

"IN_REPREX"

So it is easy to know you are in reprex.

I am trying to see how I could tackle #419 inside gt, but I am having a hard time finding out if we are in reprex or not.

The following function doesn't seem to be reliable?

in_reprex <- function() "gfm-yaml_metadata_block" %in% knitr::opts_knit$get("rmarkdown.pandoc.to")

[olivroy]

No need, reprex sets an option dmurdoch/rgl#186

in_reprex <- function() 
  !is.null(getOption("reprex.current_venue"))