Various RFS() usage in recursive functions tests
Various RFS() usage in recursive functions tests

LefterisJP/refuclib,refu-lang/rfbase,refu-lang/rfbase,refu-lang/rfbase,LefterisJP/refuclib,LefterisJP/refuclib,LefterisJP/refuclib,refu-lang/rfbase,refu-lang/rfbase