1. fixed (it seems) readline behavior. Now there is no proxmark3 prompts on the data.

2. emulator goes into beta stage.
works:
- work with 4BUID and 7BUID dumps
- load/save/grab dumps
- emulate select
- emulate authentication (with nested)
- emulate read/write blocks
- emulate NACK-ACK ping-pong

client/ui.c

@@ -10,8 +10,10 @@
 //-----------------------------------------------------------------------------
 
 #include <stdarg.h>
+#include <stdlib.h>
 #include <stdio.h>
 #include <time.h>
+#include <readline/readline.h>
 
 #include "ui.h"
 
@@ -23,6 +25,8 @@ static char *logfilename = "proxmark3.log";
 
 void PrintAndLog(char *fmt, ...)
 {
+	char *saved_line;
+	int saved_point;
   va_list argptr, argptr2;
   static FILE *logfile = NULL;
   static int logging=1;
@@ -34,12 +38,32 @@ void PrintAndLog(char *fmt, ...)
       logging=0;
     }
   }
+	
+	int need_hack = (rl_readline_state & RL_STATE_READCMD) > 0;
 
+	if (need_hack) {
+		saved_point = rl_point;
+		saved_line = rl_copy_text(0, rl_end);
+		rl_save_prompt();
+		rl_replace_line("", 0);
+		rl_redisplay();
+	}
+	
   va_start(argptr, fmt);
   va_copy(argptr2, argptr);
   vprintf(fmt, argptr);
+  vprintf("          ", 0); // cleaning prompt
   va_end(argptr);
   printf("\n");
+
+	if (need_hack) {
+		rl_restore_prompt();
+		rl_replace_line(saved_line, 0);
+		rl_point = saved_point;
+		rl_redisplay();
+		free(saved_line);
+	}
+	
   if (logging && logfile) {
     vfprintf(logfile, fmt, argptr2);
     fprintf(logfile,"\n");