gen/ingres.awk

   1 BEGIN                           {state = 0}
   2 $1=="#ifsql"&&$2=="INGRES"      {state = 0; printf("\n"); next}
   3 $1=="#ifsql"                    {state = 1; printf("\n"); next}
   4 $1=="#elsesql"                  {state = 1-state; printf("\n"); next}
   5 $1=="#endsql"                   {state = 0; printf("\n"); next}
   6 state==1                        {printf("\n"); next}
   7 state==0