#!/usr/bin/env zsh
# Keeps track of the last used working directory and automatically jumps
# into it for new shells.

# Flag indicating if we've previously jumped to last directory.
typeset -g ZSH_LAST_WORKING_DIRECTORY

# Updates the last directory once directory is changed.
function cd() {
	builtin cd "$@" && echo "$PWD" > "$ZSH/cache/last-working-dir"
}
alias chdir=cd

# Changes directory to the last working directory.
function lwd() {
	[[ ! -r ~/.zsh_lwd ]] || builtin cd `cat "$ZSH/cache/last-working-dir"`
}

# Automatically jump to last working directory unless this isn't the first time
# this plugin has been loaded.
if [[ "$ZSH_LAST_WORKING_DIRECTORY" == "" ]]; then
	lwd 2>/dev/null && ZSH_LAST_WORKING_DIRECTORY=1 || true
fi