These functions return the set of successfully evaluated expressions (histry)
and the HistoryTracker object (histry_tracker) for the current context.
histropts()histry()
histry_tracker()
histry_addinfo(...)
histry_setinknitr(val)
Info to be added
Logical value indicating whether the evaluation context is currently in a knitr/rmarkdown.
A list of R code expressions for histry and a HistoryTracker
object for histry_tracker
This means that when called during a knitr-based weaving process, the expressions will be those previously evaluted durign that process, and the tracker will be a KnitrHistoryTracker. When called outside of the weaving context, the top-level-expression history and history tracker will be returned, respectively.