%option nounput noinput

%{
%}

%%
\t           printf("^I");      /* Tabulation cat -T*/
\n           ECHO;          /* printf("^J"); ou printf("\\n\n"); for debugging*/
[\177]       printf("^?");       /* cat -v ... */   
[\377]       printf("M-^?");
[\000-\037]  printf("^%c",yytext[0]+64);
[\200-\237]  printf("M-^%c",yytext[0]-64);
[\240-\377]  printf("M-%c",yytext[0]-128);
.      ECHO;
%%

int yywrap(void) { return 1; }
int main(int argc, char *argv[]) { while (yylex()!=0) ; return 0; }