rake task to update TAGS

gistfile1.txt

desc "create TAGS file for emacs, vim"                                                                                                                      
# sudo apt-get install exuberant-ctags                                                                                                                      
task :tags do                                                                                                                                               
  rm_f "TAGS"                                                                                                                                               
  # ctags-exuberant -a -e -f TAGS --tag-relative -R app lib vendor                                                                                          
  cmd = RUBY_PLATFORM =~ /darwin/i ? "/usr/local/bin/ctags -e" : "etags"                                                                                    
  dirs = %w{app lib test}                                                                                                                                   
  dirs << "spec" if test ?d, "spec"                                                                                                                         
  system "#{cmd} -R  #{dirs.join ' '}"                                                                                                                      
end