Syntax highlighting for every `--help` page

help.zsh

help() {
  if [[ -z "$1" ]]; then
    echo "Usage: help <command>"
    return 1
  fi
  local output
  output=$("$@" --help 2>&1)
  if [[ $? -ne 0 && -z "$output" ]]; then
    echo "No help available for '$1'"
    return 1
  fi
  # If the output contains ANSI color codes, display it directly
  if echo "$output" | grep -q $'\['; then
    echo "$output"
  else
    echo "$output" | bat -l help -p
  fi
}