#!/usr/bin/env zsh

(( ARGC == 2 )) || return '_z4h_err()'
[[ $2 != */  ]] || return '_z4h_err()'

zf_mv      -f -- "$1" "$2" 2>/dev/null && return
command mv -f -- "$1" "$2" 2>/dev/null && return

[[ -e $1     ]] || return '_z4h_err()'
[[ -d ${2:h} ]] || return '_z4h_err()'

if [[ -e $2 ]]; then
  zf_rm -rf -- "$2" || return
fi

if ! command cp -r -- "$1" "$2"; then
  [[ ! -e $2 ]] || zf_rm -rf -- "$2" || return
  return 1
fi

zf_rm -rf -- "$1"