- g_string_sprintfa (str, "%c", data [i + j] >= 32 && data [i + j] <= 126? data [i + j]: '.');
- g_string_sprintfa (str, "\n");
+ g_string_append_printf (str, "%c", data [i + j] >= 32 && data [i + j] <= 126? data [i + j]: '.');
+ g_string_append_printf (str, "\n");