By default, Atuin will rebind both Ctrl-r and the up arrow. If you do not want
this to happen, set ATUIN_NOBIND before the call to atuin init
For example
export ATUIN_NOBIND="true"
eval "$(atuin init zsh)"
You can then choose to bind Atuin if needed, do this after the call to init.
Atuin defines the ZLE widget "_atuin_search_widget"
export ATUIN_NOBIND="true"
eval "$(atuin init zsh)"
bindkey '^r' _atuin_search_widget
# depends on terminal mode
bindkey '^[[A' _atuin_search_widget
bindkey '^[OA' _atuin_search_widget
export ATUIN_NOBIND="true"
eval "$(atuin init bash)"
# bind to ctrl-r, add any other bindings you want here too
bind -x '"\C-r": __atuin_history'