ref: 8f2d3879a9c66d2633ca7ec1c3b0495981feb04f dir: /test/t.cond/
{ print (substr($2,1,1) > substr($2,2,1)) ? $1 : $2 } { x = substr($1, 1, 1); y = substr($1, 2, 1); z = substr($1, 3, 1) print (x > y ? (x > z ? x : z) : y > z ? y : z) }