https://codeberg.org/imarko/vared.el
The package defines a M-x vared command for interactively editing an
Emacs variable in its s-expression form.
You'd use it when:
1. You want to edit a variable that is not intended to be
interactively edited so it's a defvar rather than defcustom.
2. You just want to quickly edit the sexp representation of a variable
and don't want to deal with the M-x customize UI


