bug#17170: 24.3.50; debug: Terminal 3 is locked, cannot read from it

[Eli Zaretskii]

> From: Nicolas Richard <theonewiththeevillook@yahoo.fr>
> Cc: Nicolas Richard <theonewiththeevillook@yahoo.fr>,  17170@debbugs.gnu.org
> Date: Wed, 02 Apr 2014 19:57:24 +0200
> 
> > Do you have debug-on-error set non-nil or something?
> 
> It is set to t.

I'm guessing that keeping it at nil will allow you to continue from
that error, instead of being stuck in an endless loop of recursive
editing.