Check for connected displays

[KeyofBlueS]

Applying a profile that contains one or more displays that are not connected can lead to a misconfiguration.
From what I see in xfconf, the only value I could use in order to match configured displays with connected displays should be EDID value.
We need a way, in bash, to retrieve that value in the same format, as it isn't the same of what we can get with e.g. xrandr --prop.

example:
We want to e.g. set profile d6c313ffc53db7cfeee6fa40538985c5eefb24cc. This profile has two configured EDID:

$ xfconf-query -v -l -c displays -p /d6c313ffc53db7cfeee6fa40538985c5eefb24cc | grep '/EDID '
/d6c313ffc53db7cfeee6fa40538985c5eefb24cc/DVI-I-1/EDID        d57a084978bbd241c62509aea3ab64a427ffc73e
/d6c313ffc53db7cfeee6fa40538985c5eefb24cc/HDMI-0/EDID         471766147bfc30d2842655fadc76e95ca11d595b

Now we want to be sure those two EDIDs to be connected before set the profile.
So the question is, how?
With xrandr --prop we can get the connected EDIDs:

...
DVI-I-1 connected
...
	EDID: 
		00ffffffffffff0041622101b12a3000
		0314010380341d78eaeed5a555489b26
		125054b30c00714f8180810095000101
		010101010101023a801871382d40582c
		450009252100001e000000fc00566973
		656f2032343044580a20000000fd0038
		4c1f5312000a202020202020000000ff
		004432343043303032343030310a00e4
...
HDMI-0 connected
...
	EDID: 
		00ffffffffffff001e6d010001010101
		011e010380a05a780aee91a3544c9926
		0f5054a1080031404540614071408180
		d1c00101010108e80030f2705a80b058
		8a0040846300001e662150b051001b30
		4070360040846300001e000000fd0018
		781e873c000a202020202020000000fc
		004c4720545620535343520a202001e4
		02034ff15a6160101f66650413051403
		021220212215015d5e5f6263643f4029
		0957071507505507006e030c001000b8
		3c2400800102030468d85dc401788003
		02e200cfe305c000e3060d01e20f3356
		5e00a0a0a02950302035004084630000
		1e000000000000000000000000000000
		000000000000000000000000000000f3
...

but they are not in the same format as those seen in xfconf-query, so we need:
CONNECTED_EDIDS="$(some command to get current connected displays EDID the same way as seen in xconf-query)"

I've been pointed to https://gitlab.xfce.org/xfce/xfce4-settings/-/blob/master/common/edid-parse.c

Any help is greatly appreciated.

IN ANY CASE a part from EDID, various checks are performed to assure a profile can be applied in first place, so this script could be considered reliable, especially if your displays are always the same.