Next Hold Space 19

Heading translation in sed

        1 { h; d }
        
        /^\(.\)\1\1*$/ { x; 
                         y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/;
                         x; d;
                       }
        x;
        $ { p;x; }

Next Next