Re: last-sexp-toggle-display

[Richard Stallman]

      These local keymaps are extremely confusing.
    Some command like C-u C-x C-e produce them, whereas others such as 
    C-u M-: produce identical output without the local keymap.

That's a bug--I will fix C-u M-:.

      All
    without any apparent rhyme or reason and without any way to
    distinguish the two outputs other than to move one's mouse over them.

Should they be given colors all the time, is that what you're
suggesting?

      Clearly, basic editing
    commands like RET should not be rebound using local keymaps, except in
    read-only buffers.

What do you think of M-RET, then?