%%
%include Jflex.include
%{
  static int MAXLINE = 80;
  int car_pos = 0;
  void NL() { System.out.println(); car_pos = 0; } 
%}

NL = \R
SP = [ \t\n\r\f\v]
CAR = [^ \t\n\r\f\v]

%%
^{SP}+   { }
{NL}{NL} { NL(); NL(); }
{NL}     { }
{SP}+    { if (car_pos != MAXLINE-1) {System.out.print(" "); car_pos++; } }
    /* nb : il reste des blancs en fin de ligne */
{CAR}+   { if ((car_pos + yylength() ) > MAXLINE-1) NL(); 
           ECHO(); car_pos += yylength(); }
[^]      { ECHO(); car_pos++; }