Backspace character not decrementing the buffer properly

[TitanBalls]

Hello,

I am using your library with a NUCLEO-G071RB dev kit and when I use a backspace, the cli buffer is not properly decremented.

For example :

echo on ->backspace -> n will not yield "echo on" but "echo on\127n"

If I add 0x7F (delete ascii char) to the switch case in cli_put(), it works properly.

cli_status_t cli_put(cli_t *cli, char c)
{
	switch(c) {
	case CMD_TERMINATOR:

		if(!cmd_pending) {
			*buf_ptr = '\0';      /* Terminate the msg and reset the msg ptr.      */
			strcpy(cmd_buf, buf); /* Copy string to command buffer for processing. */
			cmd_pending = 1;
			buf_ptr = buf; /* Reset buf_ptr to beginning.                   */
		}
		break;

	case '\b':
	case 0x7F: // <- If I add this, backspace works properly
		/* Backspace. Delete character. */
		if(buf_ptr > buf)
			buf_ptr--;
		break;

	default:
		/* Normal character received, add to buffer. */
		if((buf_ptr - buf) < MAX_BUF_SIZE)
			*buf_ptr++ = c;
		else
			return CLI_E_BUF_FULL;
		break;
	}
	return CLI_OK;
}

I am not sure in which case the delete ascii would be treated differently, so I leave it up to you to add this fix or not.