Re: signalling errors in redisplay

[Eli Zaretskii]

>     Maybe one can break out of that loop by letting Fsignal set a flag that
>     the buffer in error shouldn't be redisplayed anymore, instead of evaling
>     Lisp code withing redisplay in a condition-case.   But this might 
>     render Emacs as unusable as in an infinite loop, depending on where the 
>     error is signaled. 
> 
> That is a very good idea.  If that buffer is not redisplayed any more,
> you can still save it and kill it.  And the rest of Emacs will still
> work.  The disabling of redisplay in the buffer could last until
> it is again modified--that way, you could easily try to resume normal
> redisplay of the buffer if you want to try it.
> 
> Does anyone see a problem with this, or have a better idea?

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.