bug#46151: 28.0.50; Set revert-buffer-function in shell command output buffers

[Juri Linkov]

> We can't use `C-c C-g', I guess, since we try to avoid keystrokes that
> involve `C-g' (since `C-g' should reliably quit), but that would also be
> a natural keystroke, since `revert-buffer' is bound to `g' in
> `special-mode'.
>
> Any opinions?

What about 'C-x g'?  I know Drew will complain about wasting 
precious keybinding.  Then maybe put it on an existing prefix map?
For example, on 'M-g'.