#compdef b2sum

autoload -U is-at-least

_b2sum() {
    typeset -A opt_args
    typeset -a _arguments_options
    local ret=1

    if is-at-least 5.2; then
        _arguments_options=(-s -S -C)
    else
        _arguments_options=(-s -C)
    fi

    local context curcontext="$curcontext" state line
    _arguments "${_arguments_options[@]}" \
'-l+[digest length in bits; must not exceed the max for the blake2 algorithm and must be a multiple of 8]: : ' \
'--length=[digest length in bits; must not exceed the max for the blake2 algorithm and must be a multiple of 8]: : ' \
'-c[read checksums from the FILEs and check them]' \
'--check[read checksums from the FILEs and check them]' \
'-h[Print help]' \
'--help[Print help]' \
'-V[Print version]' \
'--version[Print version]' \
'*::file:' \
&& ret=0
}

(( $+functions[_b2sum_commands] )) ||
_b2sum_commands() {
    local commands; commands=()
    _describe -t commands 'b2sum commands' commands "$@"
}

_b2sum "$@"