Re: signalling errors in redisplay

[Richard Stallman]

    What will happen if the offending buffer is the minibuffer?  I think
    this is what Gerd had in mind in his last sentence (see above):
    preventing the display of the minibuffer might render Emacs unusable,
    or at least very hard to use.

Yes, but that is still a big improvement compared with an infinite
series of errors.  You can still manage to sake files and get out.
Besides, reinitialization of the minibuffer would clear the inhibition
because it would modify the buffer.

So this still looks good to me.