Fix #18

src/ttail_init.c

@@ -353,7 +353,7 @@ int ttail_set_fmt(ttail_t* t, const char* fmt)
 	{
 		return -1;
 	}
-	strncpy(t->fmt, fmt, len);
+	strncpy(t->fmt, fmt, len+1);
 	t->fmt[len] = '\0';
 	t->flag |= TTAIL_FLAG_FORMAT;
 	return 0;