run ctags in a post-checkout hook

gistfile1.rb

#!/usr/bin/env ruby

require "shellwords"

def run_tags
  `ctags -R . 2>/dev/null`
end

def project_dir
  File.basename Dir.pwd
end

def complete_msg
  "Tagging complete in #{Shellwords.escape project_dir}"
end

def report_done
  growlnotify = `which growlnotify`.chomp
  if growlnotify.length > 0
    `#{growlnotify} "#{complete_msg}"`
  else
    puts
    puts complete_msg
  end
end

def start_tagging
  if pid = Process.fork
    Process.detach(pid)
  else
    run_tags
    report_done
  end
end

# Use the .git dir to check if we are in root dir
if File.directory?(".git")
  puts "Generating tags in background."
  start_tagging
end