RPL_ENDOFWHO does not contain the exact original mask.

[progval]

Hi,

In ircdocs/modern-irc#138 , we would like to write this:

<mask> MUST be exactly the <mask> parameter sent by the client in its WHO message. This means the case MUST be preserved.

But Ergo casefolds everything:

1636886924.579 2 -> S: WHO #CHAN
1636886924.580 S -> 2: :My.Little.Server 352 otherNick #chan ~myusernam 127.0.0.1 My.Little.Server coolNick G*@ :0 My UniqueReal Name
1636886924.580 S -> 2: :My.Little.Server 352 otherNick #chan ~username 127.0.0.1 My.Little.Server otherNick H :0 Realname
1636886924.580 S -> 2: :My.Little.Server 315 otherNick #chan :End of WHO list

and normalizes non-channels as full masks:

1636886924.387 2 -> S: WHO coolNick
1636886924.387 2 -> S: PING synchronize2140043.316997852
1636886924.389 S -> 2: :My.Little.Server 352 otherNick * ~myusernam 127.0.0.1 My.Little.Server coolNick G* :0 My UniqueReal Name
1636886924.390 S -> 2: :My.Little.Server 315 otherNick coolnick!*@* :End of WHO list

[slingamn]

The intent is to help clients without labeled-response correlate query and response?

[progval]

I guess so