zsh directory stack autocompletion

zsh-dir-stacks

# The directory stack keeps track of the various directories you've visited in a given shell session. Here is a way to make the stack persistent using zsh. The aim is to make it easier to switch between frequently visited directories. The basic idea for this was taken from a 1991 Usenet posting by Uri Guttman. Other bits come from Paul Falstad's Z Shell Guide. 

# First, make a new file with the following contents:

#!/usr/bin/env ruby

dirs = [] 
ARGF.each { |line| dirs.push(line) }

dirs.reverse.each { |line|
  puts "pushd #{line.chomp.gsub(/s/, ' ')}"
}

# Name the file savedirs.rb, save it somewhere in your path, and make it executable with chmod +x savedirs.rb.

# Next, add these lines to your ~/.zlogout file (create it if necessary):

# Save directory stack
dirs -p | savedirs.rb > ~/.dirstack

# Finally, add these lines to your ~/.zshrc file:

DIRSTACKSIZE=8
setopt autopushd pushdminus pushdsilent pushdtohome
alias dh='dirs -v'

# Restore directory stack
source ~/.dirstack

# You can use dh (directory history) to show the stack:
% dh
0       /var
1       /etc
2       /Applications
3       ~/Development/Scripts

# Use cd -3 to change to ~/Development/Scripts, for example. The directory stack will now be saved across shell sessions, with the added bonus that your shell will now open in the directory you were in last.