bug#46583: 28.0.50; nested minibuffers

[Eli Zaretskii]

> From: Juri Linkov <juri@linkov.net>
> Cc: rms@gnu.org,  46583@debbugs.gnu.org
> Date: Thu, 18 Feb 2021 11:39:54 +0200
> 
> > It prevents messages from overwriting minibuffer prompts.  And both of
> > the bugs you mentioned seem to be about messages that overwrite such
> > prompts.  So what am I missing?
> 
> Sorry for mentioning old bugs that added confusion to this bug report.
> What we have now is a new bug found by Richard:
> 
>   I save a file that is read-only, so I am asked
> 
>     File phones is write-protected; try to save anyway? (yes or no) 
> 
>   Then I type C-x b and it tries to read a buffer name.
> 
> I could send a patch that fixes this bug.

Thanks.  I hoped first to understand why we bind
enable-recursive-minibuffers in these cases, but if you prefer to
begin with a patch, please do, and let's take it from there.