logging in Rmd interactive: Rstudio seems to catch every print() of a data.table

[jakob-r]

... and puts it as some weird output under a chunk in the default settings.

R Console has incomplete output:

Output is shown in extra items:

Origin:

bbotk/R/OptimInstance.R

Lines 151 to 153 in a892bae

	lg$info("Result of batch %i:", self$archive$n_batch)
	lg$info(capture.output(print(cbind(xdt, ydt),
	class = FALSE, row.names = FALSE, print.keys = FALSE)))

This is no bug of bbotk but apparently RStudio crashes if a chunk generates many data table outputs.

It looks like the following is not getting caught:

x = capture.output(data.table:::print.data.table(data.table(1,2), class = FALSE, row.names = FALSE, print.keys = FALSE))
print(x)

as well as

x = capture.output(print.data.frame(data.table(1,2), class = FALSE, row.names = FALSE, print.keys = FALSE))
print(x)

[jakob-r]

Let's see what if the RStudio issue has an effect: rstudio/rstudio#8732