#!/usr/bin/env bash
function show() {
  if [[ "$#" -ne 1 ]]; then
    echo "usage: show <prog>" >&2
    return 1
  fi
  case "$(type -t "$1")" in
    alias)
      alias "$1" | bat -pl sh ;;
    keyword|builtin)
      help "$1" ;;
    function)
      declare -f "$1" | bat -l sh ;;
    file)
      local path="$(which "$1")"
      local real="$(realpath "$path")"
      [[ "$path" != "$real" ]] && echo "$path"
      bat "$real" ;;
    "")
      echo "$1 doesn't exist" ;;
  esac
}
function goto() {
  if [[ "$#" -ne 1 ]]; then
    echo "usage: goto <prog>" >&2
    return 1
  fi
  local path="$(which "$1")"
  [[ -z "$path" ]] && return 2
  local real="$(realpath "$path")"
  cd "${real%/*}"
}
function rl() {
  local l="$1"
  local i=50
  while [[ -L "$l" && $((i--)) > 0 ]]; do
    local n="$(readlink "$l")"
    echo "$l -> $n"
    l="$n"
  done
  [[ -e "$l" ]] && echo "$l" || echo "~nonexistent~"
}