atuin gen-completions
Shell completions for Atuin can be generated by specifying the output directory and desired shell via gen-completions subcommand.
$ atuin gen-completions --shell bash --out-dir $HOME
Shell completion for BASH is generated in "/home/user"
Possible values for the --shell argument are the following:
bashfishzshpowershellelvish
Also, see the supported shells.