function command::_preprocess_flags() {
  local -n _args_ref="$1"
  local -a _filtered=()

  for _arg in "${_args_ref[@]:-}"; do
    local _consumed=false
    local _mixin
    for _mixin in "${_ACTIVE_MIXINS[@]:-}"; do
      local _process_fn="command::mixin::${_mixin}::process"
      if declare -f "$_process_fn" >/dev/null 2>&1; then
        if "$_process_fn" "$_arg"; then
          _consumed=true
          break
        fi
      fi
    done
    $_consumed || _filtered+=("$_arg")
  done

  _args_ref=("${_filtered[@]:-}")
}