bug#46033: up arrow in query replace should not step into the prompt

[Eli Zaretskii]

> From: Lars Ingebrigtsen <larsi@gnus.org>
> Cc: reporter <laszlomail@protonmail.com>,  46033@debbugs.gnu.org
> Date: Fri, 22 Jan 2021 19:44:52 +0100
> 
> I think the complaint is that this:
> 
> M-: (read-string "Foo: ")
> <up>
> 
> and this:
> 
> M-: (read-string "This is a very long prompt indeed and it goes on and on and 
> never seems to stop oh yes now it did: ")
> <up>
> 
> work very differently.  In the first case, the <up> works the same as
> `M-p',  In the latter case, <up> puts point into the prompt.
> 
> It does seem inconsistent.

That's how it's supposed to work, though.