.Rbuildignore.Rbuildignore has a regular expression on each line, but it's
usually easier to work with specific file names. By default, will (crudely)
turn a filename into a regular expression that will only match that
path. Repeated entries will be silently removed.add_build_ignore(pkg = ".", file, escape = TRUE)as.package for more informationTRUE, the default, will escape . to
\. and surround with ^ and $.