Preserve rtp ordered according to Bundle declarations

- fixes https://github.com/gmarik/vundle/issues#issue/3
- TODO: not the most efficient approach

autoload/vundle.vim

@@ -10,8 +10,6 @@ com! -nargs=0       BundleDocs            call vundle#installer#helptags()
 
 com! -nargs=+ -bang BundleSearch  silent  call vundle#scripts#search("<bang>", <q-args>)
 
-if !exists('g:bundles') | let g:bundles = [] | endif
-
 func! vundle#rc()
   let g:bundle_dir = expand('$HOME/.vim/bundle')
   call vundle#config#init()

autoload/vundle/config.vim

@@ -1,14 +1,16 @@
 func! vundle#config#bundle(arg, ...)
   let bundle = extend(s:parse_options(a:000), s:parse_name(a:arg))
   call extend(bundle, copy(s:bundle))
+  call s:rtp_rm_a()
   call add(g:bundles, bundle)
-  call s:rtp_add(bundle.rtpath())
+  call s:rtp_add_a()
   " TODO: fix this: explicit sourcing kills command-T
   " call vundle#config#require(bundle)
 endf
 
 func! vundle#config#init()
-  call filter(g:bundles, 's:rtp_rm(v:val.rtpath())')
+  if !exists('g:bundles') | let g:bundles = [] | endif
+  call s:rtp_rm_a()
   let g:bundles = []
 endf
 
@@ -43,6 +45,14 @@ func! s:parse_name(arg)
   return {'name': name, 'uri': uri }
 endf
 
+func! s:rtp_rm_a()
+  for b in g:bundles | call s:rtp_rm(b.rtpath()) | endfor
+endf
+
+func! s:rtp_add_a()
+  for b in reverse(copy(g:bundles)) | call s:rtp_add(b.rtpath()) | endfor
+endf
+
 func! s:rtp_rm(dir)
   exec 'set rtp-='.a:dir
   exec 'set rtp-='.expand(a:dir.'/after')