Command-line Lorem Ipsum generator using curl, lipsum.com, and jq

lipsum

#!/bin/sh

AMOUNT=5
WHAT=paras
START=false
MARKDOWN_PARAGRAPHS= # Insert a blank line between paragraphs, like Markdown
HARD_WRAP=
WIDTH=78

while getopts ":n:wpblsmhW:" opt; do
  case $opt in
    n)
      AMOUNT=$OPTARG
      ;;
    w)
      WHAT=words
      ;;
    p)
      WHAT=paras
      ;;
    b)
      WHAT=bytes
      ;;
    l)
      WHAT=lines
      ;;
    s)
      START=true
      ;;
    m)
      MARKDOWN_PARAGRAPHS=1
      ;;
    h)
      HARD_WRAP=1
      ;;
    W)
      WIDTH=$OPTARG
      ;;
    \?)
      echo "Invalid option: -$OPTARG" >&2
      exit 1
      ;;
    *)
      echo "An impossible code execution path occurred" >&2
      echo "Report 'getopts' bug to bug-bash@gnu.org" >&2
      exit 2
      ;;
  esac
done
shift "$((OPTIND - 1))"
readonly AMOUNT WHAT START MARKDOWN_PARAGRAPHS HARD_WRAP WIDTH

markdown_paragraphs() {
  if [[ $MARKDOWN_PARAGRAPHS ]]; then
    sed -E 's/$/\n/'
  else
    cat
  fi
}

hard_wrap() {
  if [[ $HARD_WRAP ]]; then
    fmt -w "$WIDTH"
  else
    cat
  fi
}

curl -sS --fail https://lipsum.com/feed/json -d "amount=$AMOUNT" -d "what=$WHAT" -d "start=$START" \
  | jq --raw-output '.feed.lipsum' | markdown_paragraphs | hard_wrap