##-
# Author: Brian Tiffin
# Dedicated to the public domain
#
# Date: November 2016
# Modified: 2016-11-28/03:42-0500
##+
#
# Rtab.icn, SNOBOL pattern return characters, current to count from end
#
procedure main()
    # match characters from current to new cursor, set back from end
    # Rtab counts backwards from end 
    # returns characters from position 1,2 with cursor now at 3
    "string" ?? Rtab(4) => result || .> curs
    write(image(result), " ", curs)
end