55 static int	(*zzfunc_in)(void) = zzerr_in;  /* MR20 */  variable
60 static int	(*zzfunc_in)() = zzerr_in;      /* MR20 */  variable
82 #define ZZGETC_FUNC {zzchar = (*zzfunc_in)(); zzclass = ZZSHIFT(zzchar);}
125 		zzfunc_in = NULL;
151 		zzfunc_in = f;
178 		zzfunc_in = 0;
194 	zzfunc_in = NULL;  in zzclose_stream()
208 	state->func_ptr = zzfunc_in;
235 	zzfunc_in = state->func_ptr;
388 	else if (zzfunc_in)  in zzgettok()
431 	else if (zzfunc_in)  in zzgettok()
471 	if (zzfunc_in) { ZZGETC_FUNC; zzcharfull = 1; ZZINC;}  in zzadvance()
473 	if (!(zzstream_in || zzfunc_in || zzstr_in)){  in zzadvance()