How could I use another leader key

[jacy95]

I am trying to use RET as the leader key instead of SPC. I tried to unbind SPC in meow-normal-state-keymap and meow-motion-state-keymap and bind RET to meow-keypad in both key maps, with keymap-xxxset and meow-motion-mode-hook. In normal state, this works pretty well; double RETs will invoke newline properly. But in motion state, e.g., in Derid, double RETs will produce an error that the buffer is read-only.

How can I achieve this properly? I would like to use SPC and DEL for the original purposes in many Emacs builtin modes; as in Info mode, I use SPC and DEL to scroll buffer, and double RET to visit links.