Description

The function returns the regular expression pattern that identifies all r engines in Rmd chunks. Defaults to [Rr]. You probably only want to change this if you create a knitr engine that processes R code but is not the default engine r. The pattern must be followed by a space (in the case the chunk is given a name), a comma (if no name is given but further options are passed to the engine) or a closing curly brace (in case no option and no name is given to the chunk).

Usage