##-
# Author: Brian Tiffin
# Dedicated to the public domain
#
# Date: November 2016
# Modified: 2016-11-28/04:04-0500
##+
#
# Rpos.icn, SNOBOL pattern function, test position counted from end
#
procedure main()
    # Pattern matching positional test, counted back from end
    "string" ?? Span('pqrstuv') => first || Rpos(3) || Tab(0) => rest
    write(image(first), " ", image(rest))
end