I have already changed the Ctrl+Shift+C keybinding so that I do not enter a terminal when I press it, see Keybinding Ctrl + Shift + C opens a new external terminal in vscode/codium on Linux, how to change the shortcut?.
Yet, this Ctrl+Shift+C does not copy to the system keyboard. Therefore the next try, how can I get Ctrl+C back as a keybinding to copy to the system clipboard when using vscodevim extension in vscode/codium?
The problem of how to copy to the system clipboard can be solved by changing or deleting the keybinding Ctrl+C for the command extension.vim_ctrl+c in the Keyboard shortcut settings
Search for "Ctrl+C" in the search field. You will find:
Or the full line:
You do not seem to need this shortcut since Esc does the same, see Does using ctrl+c instead of esc to exit insert mode break anything in vi?.
After deleting that, you can use Ctrl+C to copy and then use vim's Ctrl+Shift+V to paste from system clipboard. Outside of vscode/codium, you can paste the system clipboard with the normal Ctrl+V.
Seems like you just don't want vim to override the Ctrl key. To do this for any vim key bindings, you can just go to the vim settings (search for vim ctrl) and disable Vim: Use Ctrl Keys
