diff --git a/autoload/vundle/config.vim b/autoload/vundle/config.vim
index e8443c1..5023385 100644
--- a/autoload/vundle/config.vim
+++ b/autoload/vundle/config.vim
@@ -1,29 +1,46 @@
-func! vundle#config#bundle(arg, ...)
-  let bundle = vundle#config#init_bundle(a:arg, a:000)
-  call s:rtp_rm_a()
-  call add(g:bundles, bundle)
-  call s:rtp_add_a()
+func! vundle#config#bundle(spec, ...)
+  let bundle = vundle#config#init_bundle(a:spec, a:000)
+  " All bundles are removed from rtp and re-added in inverse order so that
+  " they appear in rtp in the same order as they appear in vimrc
+  call g:bundles.rm_from_rtp()
+  call g:bundles.add(bundle)
+  call g:bundles.add_to_rtp()
 endf
 
+" Clear all bundles from rtp, create the bundles holder
+"
 func! vundle#config#init()
-  if !exists('g:bundles') | let g:bundles = [] | endif
-  call s:rtp_rm_a()
-  let g:bundles = []
+  if exists('g:bundles')
+      call g:bundles.rm_from_rtp()
+  endif
+  let g:bundles = s:bundles.new()
 endf
 
+
+" Add each bundle to rtp and run their plugins, similarly to what vim does at
+" startup.
+"
 func! vundle#config#require(bundles) abort
-  for b in a:bundles
-    call s:rtp_add(b.rtpath())
+  for bundle in a:bundles
+    call s:rtp_add(bundle.rtpath())
     call s:rtp_add(g:bundle_dir)
     " TODO: it has to be relative rtpath, not bundle.name
-    exec 'runtime! '.b.name.'/plugin/*.vim'
-    exec 'runtime! '.b.name.'/after/*.vim'
+    exec 'runtime! ' . bundle.name . '/plugin/*.vim'
+    exec 'runtime! ' . bundle.name . '/after/*.vim'
     call s:rtp_rm(g:bundle_dir)
   endfor
 endf
 
-func! vundle#config#init_bundle(name, opts)
-  let opts = extend(s:parse_options(a:opts), s:parse_name(substitute(a:name,"['".'"]\+','','g')))
+
+" Create a bundle object based on a given spec and options
+func! vundle#config#init_bundle(spec, opts)
+  let spec = substitute(a:spec,"['".'"]\+','','g')
+
+  " Combine info derived from the spec with the options from the Bundle
+  " command.
+  let opts = extend(s:parse_options(a:opts), s:parse_spec(spec))
+
+  " Include generic bundle methods
   return extend(opts, copy(s:bundle))
 endf
 
@@ -38,35 +55,28 @@ func! s:parse_options(opts)
   endif
 endf
 
-func! s:parse_name(arg)
-  let arg = a:arg
+func! s:parse_spec(spec)
+  let spec = a:spec
 
-  if    arg =~? '^\s*\(gh\|github\):\S\+'
-  \  || arg =~? '^[a-z0-9][a-z0-9-]*/[^/]\+$'
-    let uri = 'https://github.com/'.split(arg, ':')[-1]
+  if    spec =~? '^\s*\(gh\|github\):\S\+'
+  \  || spec =~? '^[a-z0-9][a-z0-9-]*/[^/]\+$'
+    let uri = 'https://github.com/'.split(spec, ':')[-1]
     if uri !~? '\.git$'
       let uri .= '.git'
     endif
     let name = substitute(split(uri,'\/')[-1], '\.git\s*$','','i')
-  elseif arg =~? '^\s*\(git@\|git://\)\S\+' 
-  \   || arg =~? '\(file\|https\?\)://'
-  \   || arg =~? '\.git\s*$'
-    let uri = arg
+  elseif spec =~? '^\s*\(git@\|git://\)\S\+'
+  \   || spec =~? '\(file\|https\?\)://'
+  \   || spec =~? '\.git\s*$'
+    let uri = spec
     let name = split( substitute(uri,'/\?\.git\s*$','','i') ,'\/')[-1]
   else
-    let name = arg
+    let name = spec
     let uri  = 'https://github.com/vim-scripts/'.name.'.git'
   endif
-  return {'name': name, 'uri': uri, 'name_spec': arg }
+  return {'name': name, 'uri': uri, 'spec': spec }
 endf
 
-func! s:rtp_rm_a()
-  call filter(copy(g:bundles), 's:rtp_rm(v:val.rtpath())')
-endf
-
-func! s:rtp_add_a()
-  call filter(reverse(copy(g:bundles)), 's:rtp_add(v:val.rtpath())')
-endf
 
 func! s:rtp_rm(dir) abort
   exec 'set rtp-='.fnameescape(expand(a:dir))
@@ -82,6 +92,9 @@ func! s:expand_path(path) abort
   return simplify(expand(a:path))
 endf
 
+
+" Bundle object
+" ---------------------------------------------------------------------------
 let s:bundle = {}
 
 func! s:bundle.path()
@@ -91,3 +104,54 @@ endf
 func! s:bundle.rtpath()
   return has_key(self, 'rtp') ? s:expand_path(self.path().'/'.self.rtp) : self.path()
 endf
+
+func! s:bundle.command()
+  return printf("Bundle '%s'", self.spec)
+endf
+
+" ---------------------------------------------------------------------------
+
+
+" Bundle collection object
+" ---------------------------------------------------------------------------
+"
+let s:bundles = { 'list' : [], 'dict' : {} }
+
+function! s:bundles.add(bundle)
+    call add(self.list, a:bundle.spec )
+    let self.dict[ a:bundle.spec ] = a:bundle
+endf
+
+func! s:bundles.new()
+    return deepcopy(self)
+endf
+
+func! s:bundles.keys()
+  return copy(self.list)
+endf
+
+func! s:bundles.has_bundle(spec)
+  return has_key(self.dict, a:spec)
+endf
+
+func! s:bundles.get(bundle_spec)
+  return get(self.dict, a:bundle_spec)
+endf
+
+func! s:bundles.rm_from_rtp()
+  call map(copy(self.list), 's:rtp_rm(self.dict[v:val].rtpath())')
+endf
+
+func! s:bundles.add_to_rtp()
+  call map(reverse(copy(self.list)), 's:rtp_add(self.dict[v:val].rtpath())')
+endf
+
+func! s:bundles.get_sorted_list()
+  return map(copy(self.list), 'self.dict[v:val]')
+endf
+
+func! s:bundles.size()
+  return len(self.list)
+endf
+
+" ---------------------------------------------------------------------------
diff --git a/autoload/vundle/installer.vim b/autoload/vundle/installer.vim
index 5fb371e..ab0144a 100644
--- a/autoload/vundle/installer.vim
+++ b/autoload/vundle/installer.vim
@@ -1,9 +1,9 @@
 func! vundle#installer#new(bang, ...) abort
   let bundles = (a:1 == '') ?
-        \ g:bundles :
+        \ g:bundles.get_sorted_list() :
         \ map(copy(a:000), 'vundle#config#init_bundle(v:val, {})')
 
-  let names = vundle#scripts#bundle_names(map(copy(bundles), 'v:val.name_spec'))
+  let names = vundle#scripts#bundle_names(map(copy(bundles), 'v:val.spec'))
   call vundle#scripts#view('Installer',['" Installing bundles to '.expand(g:bundle_dir)], names +  ['Helptags'])
 
   call s:process(a:bang, (a:bang ? 'add!' : 'add'))
@@ -53,7 +53,7 @@ func! vundle#installer#run(func_name, name, ...) abort
 
   redraw
 
-  if 'updated' == status 
+  if 'updated' == status
     echo n.' installed'
   elseif 'todate' == status
     echo n.' already installed'
@@ -73,7 +73,7 @@ func! vundle#installer#run(func_name, name, ...) abort
   return status
 endf
 
-func! s:sign(status) 
+func! s:sign(status)
   if (!has('signs'))
     return
   endif
@@ -88,10 +88,12 @@ func! vundle#installer#install_and_require(bang, name) abort
   return result
 endf
 
-func! vundle#installer#install(bang, name) abort
+func! vundle#installer#install(bang, spec) abort
   if !isdirectory(g:bundle_dir) | call mkdir(g:bundle_dir, 'p') | endif
 
-  let b = vundle#config#init_bundle(a:name, {})
+  let spec = substitute(a:spec,"['".'"]\+','','g')
+
+  let b = g:bundles.has_bundle(spec) ? g:bundles.get(spec) : vundle#config#init_bundle(a:spec, {})
 
   return s:sync(a:bang, b)
 endf
@@ -102,7 +104,7 @@ func! vundle#installer#docs() abort
 endf
 
 func! vundle#installer#helptags(bundles) abort
-  let bundle_dirs = map(copy(a:bundles),'v:val.rtpath()')
+  let bundle_dirs = map(a:bundles.get_sorted_list(),'v:val.rtpath()')
   let help_dirs = filter(bundle_dirs, 's:has_doc(v:val)')
 
   call s:log('')
@@ -116,15 +118,15 @@ func! vundle#installer#helptags(bundles) abort
 endf
 
 func! vundle#installer#list(bang) abort
-  let bundles = vundle#scripts#bundle_names(map(copy(g:bundles), 'v:val.name_spec'))
+  let bundles = vundle#scripts#bundle_names(map(g:bundles.get_sorted_list(), 'v:val.spec'))
   call vundle#scripts#view('list', ['" My Bundles'], bundles)
   redraw
-  echo len(g:bundles).' bundles configured'
+  echo g:bundles.size().' bundles configured'
 endf
 
 
 func! vundle#installer#clean(bang) abort
-  let bundle_dirs = map(copy(g:bundles), 'v:val.path()') 
+  let bundle_dirs = map(copy(g:bundles.get_sorted_list()), 'v:val.path()')
   let all_dirs = split(globpath(g:bundle_dir, '*'), "\n")
   let x_dirs = filter(all_dirs, '0 > index(bundle_dirs, v:val)')
 
@@ -207,7 +209,7 @@ func! s:sync(bang, bundle) abort
 
   let out = s:system(cmd)
   call s:log('')
-  call s:log('Bundle '.a:bundle.name_spec)
+  call s:log('Bundle '.a:bundle.spec)
   call s:log('$ '.cmd)
   call s:log('> '.out)