雑なzopfli補完

_zopfli.zsh

compdef _zopfli zopfli
function _zopfli() {
    _arguments \
        '-h[help]' \
        '-c[write the result on standard output]' \
        '-v[verbose mode]' \
        '--i#[perform # iterations (default 15). Expamples --i50]' \
        '--gzip[output to gzip format (default)]' \
        '--zlib[output to zlib format]' \
        '--deflate[output to deflate format]' \
        '--splitlast[do block splitting last instead of first]' \
        '*:key:__zopfli'

    __zopfli() {
        local -a iterations
        if [ "$(echo "${words[@]}" | grep " --i")" ]; then
            iterations=(
                '--'
                '--i15'
                '--i20'
                '--i50'
                '--i100'
                '--i200'
            )
            _wanted key expl 'iterations' compadd $iterations
        else
            _wanted key expl 'files' _files
        fi
    }
}