Initial version

* Allows custom VIM configuration directory through VIM_HOME
* Loads NeoBundle
* Various directories created, they'll be used later

.gitignore

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+/bundle
+/.netrwhist
+/keys

.gitmodules

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+[submodule "bundle/neobundle.vim"]
+	path = bundle/neobundle.vim
+	url = https://github.com/Shougo/neobundle.vim.git

bundle/neobundle.vim

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+Subproject commit 0c31437b58831efa20a9623e78be25a90df8c8c8

config-bits/20-neobundle.vim

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+" Load and initialise NeoBundle and plugins
+
+let s:bundles_dir = g:vim_home . "/bundle/"
+
+if has( 'vim_starting' )
+	if &compatible
+		set nocompatible
+	endif
+
+	let s:neobundle_path=s:bundles_dir . "neobundle.vim/"
+	let &g:runtimepath = &g:runtimepath . "," . s:neobundle_path
+endif
+
+call neobundle#begin( s:bundles_dir )
+
+NeoBundleFetch 'Shougo/neobundle.vim'
+
+call neobundle#end()

vimrc

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+" Main VIM configuration file: only serves as a loader
+
+
+" If another runtime directory is specified, use it
+let s:own_path = expand( '<sfile>:p:h' )
+let $VIM_HOME = $VIM_HOME == '' ? '' 
+	\ : fnamemodify( $VIM_HOME . '/x' , ':p:h' )
+if $VIM_HOME == '' || $VIM_HOME == s:own_path
+	let $VIM_HOME = s:own_path
+	let g:vim_home = fnameescape( $VIM_HOME )
+	let g:vim_vimrc = fnameescape( $VIM_HOME . '/vimrc' )
+else
+	let g:vim_home = fnameescape( $VIM_HOME )
+	let g:vim_vimrc = fnameescape( $VIM_HOME . '/vimrc' )
+	let &rtp = g:vim_home
+	if filereadable( g:vim_vimrc )
+		execute 'source ' . g:vim_vimrc
+	endif
+	finish
+endif
+
+" Execute configuration in config-bits
+let s:cfg_bits_path = g:vim_home . '/config-bits'
+for s:cfg_file in sort(
+		\ split( glob( s:cfg_bits_path . '/??-?*.vim' ) , "\n" ) )
+	execute 'source ' . s:cfg_file
+endfor
+