A better version of 'which' which understands builtins and follows symlinks

wh

#!/bin/bash -e

com="$1"

if [[ -z "$com" ]]; then
  exit 1
fi

while true; do
  case $(type -t "$com") in
    function)
      type f | tail -n+2 | vimcat -c 'set syntax=sh'
      exit
      ;;
    alias)
      com="$(alias "$com" | cut -d"'" -f2)"
      echo "alias: -> '$com'"
      ;;
    builtin)
      echo "Shell builtin."
      exit
      ;;
    file)
      com="$(type -p "$com")"
      COUNTER=20
      while [ $COUNTER -gt 0 ]; do
        if [ -h "$com" ]; then
          com="$(readlink "$com")"
          echo "sym: -> '$com'"
        elif [ -e "$com" ]; then
          filet="$(file "$com")"
          if [[ $filet == *text* ]]; then
            if [[ $(wc -l "$com" | awk '{print $1}') -lt 20 ]]; then
              vimcat "$com"
            else
              vimpager "$com"
            fi
            echo "'$com'"
          else
            ls -l "$com"
            echo "$filet"
          fi
          exit
        else
          echo "<file missing>"
          exit 1
        fi
        (( COUNTER -= 1 ))
      done
      exit 1
      ;;
    *)
      exit 1
    esac
  
done