A path with backslashes rewritten to forward slashes, i.e. POSIX form. R accepts these on every OS, so this is also how a filesystem path is made safe to interpolate into an R string literal (where a raw `` would escape).
A path with backslashes rewritten to forward slashes, i.e. POSIX form. R accepts these on every OS, so this is also how a filesystem path is made safe to interpolate into an R string literal (where a raw `` would escape).