AT Cellular API issue in AT Handler

Mbed OS
1

The AT handler does not handle a response in the format
CRLF response CRLF

2

You can use the set_delimiter() function to specify a character(s) to denote a new line.

3

That doesn’t work. It is already set to CRLF. The response handling code can’t handle things that begin with CRLF

4

And prefixing the response string that you look for with a CRLF doesn’t work?