rusty-pee 0.1.0

Fan stdin out to N concurrent shell-spawned children — a Rust port of moreutils `pee` with strict-compat mode, exit-code aggregation (Default max / Strict bitwise OR), backpressure-paced byte-perfect delivery, and a typed library API.
Documentation 
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_rusty-pee() {
    local i cur prev opts cmd
    COMPREPLY=()
    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
        cur="$2"
    else
        cur="${COMP_WORDS[COMP_CWORD]}"
    fi
    prev="$3"
    cmd=""
    opts=""

    for i in "${COMP_WORDS[@]:0:COMP_CWORD}"
    do
        case "${cmd},${i}" in
            ",$1")
                cmd="rusty__pee"
                ;;
            rusty__pee,completions)
                cmd="rusty__pee__subcmd__completions"
                ;;
            rusty__pee,help)
                cmd="rusty__pee__subcmd__help"
                ;;
            rusty__pee__subcmd__help,completions)
                cmd="rusty__pee__subcmd__help__subcmd__completions"
                ;;
            rusty__pee__subcmd__help,help)
                cmd="rusty__pee__subcmd__help__subcmd__help"
                ;;
            *)
                ;;
        esac
    done

    case "${cmd}" in
        rusty__pee)
            opts="-h -V --capture --strict --no-strict --help --version [COMMANDS]... completions help"
            if [[ ${cur} == -* || ${COMP_CWORD} -eq 1 ]] ; then
                COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
                return 0
            fi
            case "${prev}" in
                *)
                    COMPREPLY=()
                    ;;
            esac
            COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
            return 0
            ;;
        rusty__subcmd__pee__subcmd__completions)
            opts="-h --help bash elvish fish powershell zsh"
            if [[ ${cur} == -* || ${COMP_CWORD} -eq 2 ]] ; then
                COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
                return 0
            fi
            case "${prev}" in
                *)
                    COMPREPLY=()
                    ;;
            esac
            COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
            return 0
            ;;
        rusty__subcmd__pee__subcmd__help)
            opts="completions help"
            if [[ ${cur} == -* || ${COMP_CWORD} -eq 2 ]] ; then
                COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
                return 0
            fi
            case "${prev}" in
                *)
                    COMPREPLY=()
                    ;;
            esac
            COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
            return 0
            ;;
        rusty__subcmd__pee__subcmd__help__subcmd__completions)
            opts=""
            if [[ ${cur} == -* || ${COMP_CWORD} -eq 3 ]] ; then
                COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
                return 0
            fi
            case "${prev}" in
                *)
                    COMPREPLY=()
                    ;;
            esac
            COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
            return 0
            ;;
        rusty__subcmd__pee__subcmd__help__subcmd__help)
            opts=""
            if [[ ${cur} == -* || ${COMP_CWORD} -eq 3 ]] ; then
                COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
                return 0
            fi
            case "${prev}" in
                *)
                    COMPREPLY=()
                    ;;
            esac
            COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
            return 0
            ;;
    esac
}

if [[ "${BASH_VERSINFO[0]}" -eq 4 && "${BASH_VERSINFO[1]}" -ge 4 || "${BASH_VERSINFO[0]}" -gt 4 ]]; then
    complete -F _rusty-pee -o nosort -o bashdefault -o default rusty-pee
else
    complete -F _rusty-pee -o bashdefault -o default rusty-pee
fi