Coming from tmux I would really like to use prefixes in keybindings, such as ctrl-a c (notice that ctrl-a is pressed first, released, and afterwards c is pressed). This can considerably lower the amount of keybind conflicts between the terminal and other programs such as a window manager or an editor running inside the terminal.
Is this currently possible? Has this issue been raised before?
I would like to contribute to terminology and it might be something I would want to implement myself, but I would like to know about similar projects, if they have done it before?