option.sh

#!/bin/bash

# ↓ここを編集
while getopts w-:h-: opt; do
  optarg="${OPTARG}"
  if [[ "${opt}" = - ]]; then
    opt="-${OPTARG%%=*}"
    optarg="${OPTARG/${OPTARG%%=*}/}"
    optarg="${optarg#=}"
    set +u
    if [[ -z "${optarg}" ]] && [[ ! "${!OPTIND}" = "-*" ]]; then
        optarg="${!OPTIND}"
        shift
    fi
  fi
# ↓ここも編集
  case "-${opt}" in
    -w|--wawawa)
      echo 'wawawa'
      ;;
    -h|--help)
      echo 'usage'
      ;;
  esac
done