Emacs, Slime Helper to augment 'swank' bash function and trigger emacs to connect to the fresh swank server.

slime-connect.rb

#!/usr/bin/env ruby
require 'socket'      # Sockets are in standard library

$hostname = 'localhost'
$port = (ARGV[0] || "4005").to_i
attempts = 100

$s = nil
$retry = true
while $retry && (attempts > 0)
  begin
    $stderr.print '.'
    attempts -= 1
    $s = TCPSocket.open($host, $port)
    $stderr.puts "connected"
    break
  rescue
    if $!.to_s =~ /Connection refused/i
      $retry = true
      sleep 0.25
    else
      $stderr.puts "Error: #$!"
      $retry = false
    end
  end
end

if $s
  $s.close
  $stderr.puts "connected"
  exec %Q|emacsclient -e '(progn (setq slime-protocol-version "20100404") (slime-connect "localhost" #{$port}))'|
else
  exit -1
end