Completion

$ source <(witness completion bash)
# To load completions for each session, execute once:
# Linux:
$ witness completion bash > /etc/bash_completion.d/witness
# macOS:
$ witness completion bash > /usr/local/etc/bash_completion.d/witness

# If shell completion is not already enabled in your environment,
# you will need to enable it.  You can execute the following once:
$ echo "autoload -U compinit; compinit" >> ~/.zshrc
# To load completions for each session, execute once:
$ witness completion zsh > "${fpath[1]}/_witness"
# You will need to start a new shell for this setup to take effect.

$ witness completion fish | source
# To load completions for each session, execute once:
$ witness completion fish > ~/.config/fish/completions/witness.fish

PS> witness completion powershell | Out-String | Invoke-Expression
# To load completions for every new session, run:
PS> witness completion powershell > witness.ps1
# and source this file from your PowerShell profile.