key binding not working

[Ray Andrews <rayandrews@xxxxxxxxxxx>]

Here's maybe a better question than the last one:

    bindkey "\e[A" history-beginning-search-backward

... use this in the old install and the new install of Debian 11, same 
config files exactly.  But now, the up arrow has no sense of completion 
of a command that's partially typed, it just gives the last command 
typed and overwrites whatever command you've partially typed before 
hitting the up arrow.

    $ bindkey

... shows:

"^[[A" history-beginning-search-backward

... which seems to show that it's been set properly.  I wonder what 
could have changed.  Mind, this is the 'apt-get install zsh' version so 
perhaps there's some other config file somewhere making mischief.