--ChatCopyPaste.
--A simple copy paste addon for chat.
--Novaspark-Arugal OCE (classic) / Venomisto-Frostmourne OCE (retail).
--https://www.curseforge.com/members/venomisto/projects

When you hover over the chat window a small icon will appear in the bottom-right corner.
Click the icon so you can highlight and copy chat.
It will also highlight website/discord links in chat and make them clickable for copying.

Use /chatcopypaste or /ccp for options.