.vimrc

set nocompatible " be iMproved
filetype off                   " required!

set rtp+=~/.vim/bundle/vundle/
call vundle#rc()

" let Vundle manage Vundle
" required! 
Bundle 'gmarik/vundle'

" Files manager
Bundle 'majutsushi/tagbar'
Bundle 'L9'
Bundle 'FuzzyFinder'
Bundle 'vim-scripts/mru.vim'
Bundle 'fholgado/minibufexpl.vim'
Bundle 'scrooloose/nerdtree'
Bundle 'jistr/vim-nerdtree-tabs'
Bundle 'sjl/gundo.vim'

" Color scheme
Bundle 'cschlueter/vim-mustang'
Bundle 'godlygeek/csapprox'

" Utilities
Bundle 'mhz/vim-matchit'
Bundle 'Raimondi/delimitMate'
Bundle "MarcWeber/vim-addon-mw-utils"
Bundle "tomtom/tlib_vim"
"Bundle "snipmate-snippets"
"Bundle 'msanders/snipmate.vim'
"Bundle 'tlavi/SnipMgr'
Bundle 'lrvick/Conque-Shell'
Bundle 'vim-scripts/SuperTab'

" Syntax Commenter
Bundle 'vim-scripts/tComment'

" HTML Development 
Bundle 'rstacruz/sparkup', {'rtp': 'vim/'}

" Universal Syntax Checker + Completion
"Bundle 'UltiSnips'
Bundle 'scrooloose/syntastic'
Bundle "Shougo/neocomplcache"
Bundle "Shougo/neosnippet"

" Python Syntax Checker
Bundle 'kevinw/pyflakes-vim'
Bundle 'vim-scripts/pep8'
Bundle 'vim-scripts/Pydiction'
Bundle "vim-scripts/indentpython.vim"
Bundle 'offlinehacker/autopydoc'
Bundle 'tshirtman/vim-cython'

" Python refractoring
Bundle 'klen/rope-vim'

" Lua
Bundle "xolox/vim-lua-ftplugin"

" HTML and Javascript Syntax Checkers
Bundle "manalang/jshint.vim"
Bundle 'othree/html5.vim'
Bundle 'vim-scripts/jQuery'
Bundle 'jamescarr/snipmate-nodejs'
Bundle 'guileen/vim-node'

" Versioning System
Bundle 'tpope/vim-fugitive'

filetype plugin indent on     " required! 


" INSTALLED PACKAGES
" =========================================
" Color scheme Mustang : http://hcalves.deviantart.com/art/Mustang-Vim-Colorscheme-98974484
" Syntastic :https://github.com/scrooloose/syntastic
" FuzzyFinder : http://www.vim.org/scripts/script.php?script_id=1984
" L9 : http://www.vim.org/scripts/script.php?script_id=3252
" Pyflakes : https://github.com/kevinw/pyflakes-vim
" Pep8 : https://github.com/vim-scripts/pep8
" NerdTree : https://github.com/scrooloose/nerdtree
" NerdCommenter : https://github.com/scrooloose/nerdcommenter
" Tagbar : https://github.com/majutsushi/tagbar
" Sparkup : http://jetpackweb.com/blog/2010/03/04/write-html-faster-with-sparkup-vim-and-textmate/
" UltiSnips : http://www.vim.org/scripts/script.php?script_id=2715, 
"             http://fueledbylemons.com/blog/2011/07/27/why-ultisnips/
" MRU    : https://github.com/vim-scripts/mru.vim
" Tagbar : https://github.com/majutsushi/tagbar
" NeoComplcache : https://github.com/Shougo/neocomplcache
" IndentPython : https://github.com/vim-scripts/indentpython.vim
" Fugitive : https://github.com/tpope/vim-fugitive

" Key Shorcuts by Default
" Leader                = ,
" MRU                   = , + space
" Pep8                  = F6
" FileManager + Tagbar  = F8
" FileManager           = , + t
" FuzzFinder Files      = , + m
" FuzzFinder Buffer     = , + b
" File Explorer         = , + t
" Tagbar                = , + l
" 

"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" => General
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" Sets how many lines of history VIM has to remember
set history=1000

" Ignore some file
set wildignore=*.swp,*.bak,*.pyc,*.class

" Set to auto read when a file is changed from the outside
set autowrite

" With a map leader it's possible to do extra key combinations
" leader is press comma (,) key
" like <leader>w saves the current file
let mapleader=","
let g:mapleader=","

" Fast saving with leader + w
nmap <leader>w :w!<cr>

" Fast editing of the .vimrc
map <leader>e :e! ~/.vimrc<cr>

" When vimrc is edited, reload it
autocmd! bufwritepost vimrc source ~/.vimrc

"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" => Text, tab and indent related
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
set tabstop=4
set softtabstop=4
set shiftwidth=4
set textwidth=80
set smarttab
set expandtab

set lbr
set tw=500

set ai "Auto indent
set si "Smart indet
set wrap "Wrap lines


"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" => VIM user interface
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
set so=7            " Set 7 lines to the curors - when moving vertical..
set ruler           "Always show current position
set hid             "Change buffer - without saving
set nohidden
set mouse=a
set ttymouse=xterm2

" Set backspace config
set backspace=eol,start,indent
set whichwrap+=<,>,h,l

set nolazyredraw "Don't redraw while executing macros 
set magic "Set magic on, for regular expressions

set showmatch "Show matching bracets when text indicator is over them
set ttyfast "Fast tty

" No sound on errors
set noerrorbells
set novisualbell
set tm=500

"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" => Colors and Fonts
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
syntax enable "Enable syntax hl

set shell=/bin/bash

set guioptions-=T
set background=dark
let g:CSApprox_attr_map = { 'bold' : 'bold', 'italic' : '', 'sp' : '' }
if has("gui_running")
    colorscheme mustang
else
    set background=dark
    colorscheme solarized
endif
set nonu
set gfn=Liberation\ Mono\ 10 

set encoding=utf8
try
    lang en_US
catch
endtry

if has("gui_running")
  " GUI is running or is about to start.
  " Maximize gvim window.
  autocmd vimenter * :set lines=999
  autocmd vimenter * :set columns=999
endif
  
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" => Files, backups and undo
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" Turn backup off, since most stuff is in SVN, git anyway...
set nobackup
set nowb
set noswapfile

set undodir=~/.vim/undodir
set undofile
set undolevels=1000 "maximum number of changes that can be undone
set undoreload=10000 "maximum number lines to save for undo on a buffer reload

"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" => Moving around, tabs and buffers
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""

"Useful when moving accross long lines
map j gj
map k gk

map <silent> <leader><cr> :nohlsearch<cr>

" GRB: clear the search buffer when hitting return
nnoremap <CR> :nohlsearch<CR>/<BS>


" Close the current buffer
map <leader>bd :Bclose<cr>

" Close all the buffers
map <leader>ba :1,300 bd!<cr>

" Moving tab using CTRL+ the arrows
map <C-right> :bn<CR>
map <C-left> :bp<CR>

" Tab configuration
map <leader>tn :tabnew! %<cr>
map <leader>te :tabedit 
map <leader>tc :tabclose<cr>
map <leader>tm :tabmove 

" When pressing <leader>cd switch to the directory of the open buffer
map <leader>cd :cd %:p:h<cr>

"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
"
" My CUSTOM 
"
set cmdheight=1               " Explicitly set the height of the command line
set number                    " Display line numbers
set numberwidth=1             " using only 1 column (and 1 space) while possible
set title                     " show title in console title bar
set wildmenu                  " Menu completion in command mode on <Tab>
set pastetoggle=<F3>          " Press F3 for toggle paste mode
set cursorline
set colorcolumn=80 " Mark 80th column with a red line

" Taken From http://stackoverflow.com/questions/235439/vim-80-column-layout-concerns
autocmd FileType python highlight OverLength ctermbg=darkred ctermfg=white guibg=#FFD9D9
autocmd FileType python match OverLength /\%81v.\+/

" Set default environment based on current edited files
autocmd BufEnter * silent! lcd %:p:h

" The best thing here! 
" In insert mode, you can paste from clipboard using CTRL+v
"inoremap <C-v> <ESC>:set paste<CR>"+gp<ESC>:set nopaste<ENTER>i<RIGHT>

" have command-line completion <tab> (for filenames, help topics, option names)
" first list the available options and complete the longest common part, then
" have further <tab>s cycle through the possibilities:
set wildmode=list:longest,full

set nowrap          " no line wrapping;
set guioptions+=b   " add a horizontal scrollbar to the bottom

"--- search options ------------
set incsearch       " show 'best match so far' as you type
set hlsearch        " hilight the items found by the search
set ignorecase      " ignores case of letters on searches
set smartcase       " Override the 'ignorecase' option if the search pattern contains upper case characters

" Search and error color highlights
hi Search guifg=#ffffff guibg=#0000ff gui=none ctermfg=white ctermbg=darkblue
hi IncSearch guifg=#ffffff guibg=#8888ff gui=none ctermfg=white
highlight SpellBad guifg=#ffffff guibg=#8888ff gui=none ctermfg=black ctermbg=darkred

" Use UTF-8 as the default buffer encoding
set enc=utf-8

" Always show status line, even for one window
set laststatus=2

" Scroll when cursor gets within 3 characters of top/bottom edge
set scrolloff=3

" Round indent to multiple of 'shiftwidth' for > and < commands
set shiftround

" Show (partial) commands (or size of selection in Visual mode) in the status line
set showcmd

" Don't request terminal version string (for xterm)
set t_RV=

"--- Keystrokes ----------------
" h and l wrap between lines, cursor keys wrap in insertion mode
set whichwrap=h,l,~,[,]

" page down with <SPACE>, pageup with - or <BkSpc>
noremap <Space> <PageDown>
noremap <BS> <PageUp>

" Execute Python file being edited with <Shift> + e:
nnoremap E w:<CR>:!python % <CR>

" Shortcut to Close quickfix window with leader+c
nnoremap <leader>c <CR>:cclose<CR>

" Set autocomplete form 
set completeopt=menuone,longest,preview

"--- python formatting help ---
autocmd BufRead *.py set smartindent cinwords=if,elif,else,for,while,try,except,finally,def,class

" Enable omni completion.
autocmd FileType css set omnifunc=csscomplete#CompleteCSS
autocmd FileType html,markdown,ctp set omnifunc=htmlcomplete#CompleteTags
autocmd FileType javascript set omnifunc=javascriptcomplete#CompleteJS
autocmd FileType python set omnifunc=pythoncomplete#Complete
autocmd FileType xml set omnifunc=xmlcomplete#CompleteTags
autocmd FileType php,ctp set omnifunc=phpcomplete#CompletePHP
autocmd FileType vim set omnifunc=syntaxcomplete#Complete
autocmd FileType lua set omnifunc=xolox#lua#omnifunc

" markdown
au BufEnter,Bufread *.mkd,*.md,*.mdown,*.markdown set tw=0

" http://www.brankovukelic.com/post/2091037293/turn-vim-into-powerful-javascript-editor"

" HTML (tab width 2 chr, no wrapping)
autocmd FileType html set sw=2
autocmd FileType html set ts=2
autocmd FileType html set sts=2
autocmd FileType html set textwidth=0

" XHTML (tab width 2 chr, no wrapping)
autocmd FileType xhtml set sw=2
autocmd FileType xhtml set ts=2
autocmd FileType xhtml set sts=2
autocmd FileType xhtml set textwidth=0

" CSS (tab width 2 chr, wrap at 79th char)
autocmd FileType css set sw=2
autocmd FileType css set ts=2
autocmd FileType css set sts=2

" Folding
" auto save folding : http://princ3.wordpress.com/2007/01/26/automaticaly-save-foldings-in-vim/
set viewoptions=folds
au BufWinLeave * silent! mkview
au BufWinEnter * silent! loadview

autocmd Syntax c,cpp,vim,xml,html,xhtml,perl normal zR

"remove trailing whitespace
"http://vim.wikia.com/wiki/Remove_unwanted_spaces#Automatically_removing_all_trailing_whitespace
autocmd BufWritePre *.c :%s/\s\+$//e
autocmd BufWritePre *.cpp :%s/\s\+$//e
autocmd BufWritePre *.c++ :%s/\s\+$//e
autocmd BufWritePre *.h :%s/\s\+$//e
autocmd BufWritePre *.java :%s/\s\+$//e
autocmd BufWritePre *.php :%s/\s\+$//e
autocmd BufWritePre *.pl :%s/\s\+$//e
autocmd BufWritePre *.py :%s/\s\+$//e

" tabs, not spaces for php, ctp
au BufEnter,BufRead *.php,*.ctp set noexpandtab

" Autoclose quickfix windows when quit
" http://stackoverflow.com/questions/7476126/how-to-automatically-close-the-quick-fix-window-when-leaving-a-file
aug QFClose
  au!
  au WinEnter * if winnr('$') == 1 && getbufvar(winbufnr(winnr()), "&buftype") == "quickfix"|q|endif
aug END

" http://stackoverflow.com/questions/1687252/with-vim-use-both-snipmate-and-pydiction-together-share-the-tab-key "
" Change share keys between pydiction and snipmate
"
"
""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""'
if has("gui_running")
    " Vimdiff colorscheme
    highlight DiffAdd cterm=none ctermfg=bg ctermbg=Green gui=none guifg=bg guibg=Green
    highlight DiffDelete cterm=none ctermfg=bg ctermbg=Red gui=none guifg=bg guibg=Red
    highlight DiffChange cterm=none ctermfg=bg ctermbg=Yellow gui=none guifg=bg guibg=Yellow
    highlight DiffText cterm=none ctermfg=bg ctermbg=Magenta gui=none guifg=bg guibg=Magenta
endif

""""""""""""""""""""""""""""""""""""""""""""""""
" Auto close preview menu autocomplete after choose
" http://stackoverflow.com/questions/3105307/how-do-you-automatically-remove-the-preview-window-after-autocompletion-in-vim
"
" If you prefer the Omni-Completion tip window to close when a selection is
" made, these lines close it on movement in insert mode or when leaving
" insert mode
"autocmd CursorMovedI * if pumvisible() == 0|pclose|endif
autocmd InsertLeave * if pumvisible() == 0|pclose|endif

" CUSTOM CONFIGURATION FOR INSTALLED PLUGIN
"
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""

"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" Pep8 using F6
" You can change with this :
let g:pep8_map='<F6>'

" Pydiction
let g:pydiction_location='/home/offlinehacker/.vim/bundle/Pydiction/complete-dict'

"""" PYTHON STYLE """"
let python_highlight_all=1 " Enable all plugin's highlighting.
let python_slow_sync=1 " For fast machines.
let python_print_as_function=1 " Color 'print' function.

"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" FuzzFinder Shorcuts. Using F2 for opening FuzzyFinderTextMate
map <leader>f :FufFileWithCurrentBufferDir<CR>
map <leader>m :FufFileWithFullCwd<CR>
map <leader>b :FufBuffer<CR>

"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" MRU shorcuts
map <leader><space> :MRU<CR> 

"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" Pyflakes configuration
if has("gui_running")
    highlight SpellBad term=underline gui=undercurl guisp=Orange
endif

""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" Configure neocomplcache autocomplete 
" http://www.vim.org/scripts/script.php?script_id=2620

highlight Pmenu gui=bold

if has("gui_running")
    highlight SpellBad term=underline gui=undercurl guisp=Orange
endif

function! OriginWindow()
    for window in range(2, winnr('$'))
        execute window . 'wincmd w'
    endfor
endfunction


"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" Open Window Explorer NerdTree & Tagbar using (left-right sidebar) using <F8>
"
" now you can open NERDTree and Tagbar using F7
" http://stackoverflow.com/questions/6624043/how-to-open-or-close-nerdtree-and-tagbar-with-leader
nmap <F7> :NERDTreeTabsToggle<CR>:call OriginWindow()<CR>
nmap <F5> :TagbarToggle<CR>

" TagBar Configuration
let g:tagbar_usearrows=1
let g:tagbar_width=30
let g:tagbar_singleclick=1

" Lua omnifunc enable
let g:lua_complete_omni = 1

""""""""""""""""""""""""""""""""""""""""""""
" NERDTree : https://github.com/scrooloose/nerdtree.git
" MODIFYING NERDTree MY CUSTOM
" how to using NERDTree :
" http://ykyuen.wordpress.com/2011/04/04/nerdtree-the-file-explorer-in-vivim/
"""""""""""""""""""""""""""""""""""""""""""

" Enable this for make NERDTree load every opening files
" autocmd VimEnter * NERDTree " Make Always Load NERDTree every opening files
" autocmd VimEnter * wincmd p " Automatically go to buffer every time open files

" FIXING NERDTree, automatically close if there no file edited
"https://github.com/scrooloose/nerdtree/issues/21
"
autocmd WinEnter * call s:CloseIfOnlyNerdTreeLeft()

" Use leader + . for opening File Explorer
" map <leader>t :NERDTreeTabsToggle<CR>
let g:NERDTreeShowBookmarks=1
let g:NERDTreeMouseMode=3
let g:NERDTreeWinSize=30

" Close all open buffers on entering a window if the only
" buffer that's left is the NERDTree buffer
function! s:CloseIfOnlyNerdTreeLeft()
  if exists("t:NERDTreeBufName")
    if bufwinnr(t:NERDTreeBufName) != -1
      if winnr("$") == 1
        q
      endif
    endif
  endif
endfunction

" Taken from http://dotfiles.org/~joaoTrindade/.vimrc
" Plugin related {{{1
"#########################################

" Minibuffer{{{
""""""""""""""""""""""""""""""
"Show the miniBufExplorer from the start
let g:miniBufExplorerMoreThanOne = 0 

"Not using because I don't use the vertival window
"Use a vertical windows
"let g:miniBufExplVSplit = 5

"Put the miniBufExplorer windows at the right
"let g:miniBufExplSplitBelow=1

"Maximum size of the mini buffer explorer window
"let g:miniBufExplMaxSize = 15

"Still haven't discovered what it does
"let g:miniBufExplMapWindowNavArrows = 1
let g:miniBufExplMapCTabSwitchBufs = 1
"let g:miniBufExplUseSingleClick = 1
"let g:miniBufExplMapWindowNavVim = 1
"
" make tabs show complete (no broken on two lines)
let g:miniBufExplTabWrap = 1

" If you use other explorers like TagList you can (As of 6.2.8) set it at 1:
let g:miniBufExplModSelTarget = 1

" If you would like to single click on tabs rather than double clicking on them to goto the selected buffer.
let g:miniBufExplUseSingleClick = 1

"for buffers that have NOT CHANGED and are NOT VISIBLE.
highlight MBENormal guifg=LightBlue

" for buffers that HAVE CHANGED and are NOT VISIBLE
highlight MBEChanged guifg=Red

" buffers that have NOT CHANGED and are VISIBLE
highlight MBEVisibleNormal term=bold cterm=bold gui=bold guifg=Green

" buffers that have CHANGED and are VISIBLE
highlight MBEVisibleChanged term=bold cterm=bold gui=bold guifg=Green

let g:bufExplorerSortBy = "name"

" autocmd BufRead,BufNew :call UMiniBufExplorer

"""""""""""""""""""""""""""""""""""
" Stolen from http://dev.gentoo.org/~bass/configs/vimrc.html
"
" Adapt the status line accourding to the window
"""""""""""""""""""""""""""""""""""
if has("autocmd")
    au FileType qf
                \ if &buftype == "quickfix" |
                \     setlocal statusline=%2*%-3.3n%0* |
                \     setlocal statusline+=\ \[Compiler\ Messages\] |
                \     setlocal statusline+=%=%2*\ %<%P |
                \ endif

    fun! FixMiniBufExplorerTitle()
        if "-MiniBufExplorer-" == bufname("%")
            setlocal statusline=%2*%-3.3n%0*
            setlocal statusline+=\[Buffers\]
            setlocal statusline+=%=%2*\ %<%P
        endif
    endfun

    au BufWinEnter *
                \ let oldwinnr=winnr() |
                \ windo call FixMiniBufExplorerTitle() |
                \ exec oldwinnr . " wincmd w"
endif
""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""}}}

" Enable NeoComplcache 
let g:neocomplcache_enable_at_startup = 1
let g:neocomplcache_snippets_dir = $HOME . '/.vim/snippets'

" Plugin key-mappings.
imap <C-k>     <Plug>(neosnippet_expand_or_jump)
smap <C-k>     <Plug>(neosnippet_expand_or_jump)

" SuperTab like snippets behavior.
imap <expr><TAB> neosnippet#expandable() ? "\<Plug>(neosnippet_expand_or_jump)" : pumvisible() ? "\<C-n>" : "\<TAB>"
smap <expr><TAB> neosnippet#expandable() ? "\<Plug>(neosnippet_expand_or_jump)" : "\<TAB>"

" Support for ctrl-c and alike
source $VIMRUNTIME/mswin.vim
behave xterm

" Fold column site is 2
set foldcolumn=2
set foldlevelstart=20 " set foldlevel higher so opened buffers arent folded
set foldmethod=indent

" Open file
nmap <silent> <C-o> :browse open<cr>

" Tabs
nmap <C-t> :tab split<CR>:MiniBufExplorer<CR>:call OriginWindow()<CR>
nmap <C-d> :tabclose<CR>
nmap <C-Up> :tabn<CR>
nmap <C-Down> :tabp<CR>

"" MULTIPAGE
"" see: http://stackoverflow.com/questions/6873076/auto-scrollable-pagination-with-vim-using-vertical-split
nmap <silent> <Leader>sp :vsplit<cr>

" Shell
nnoremap <leader>b :lcd %:p:h<CR>:ConqueTermSplit bash<CR>
let g:ConqueTerm_CloseOnEnd = 1

autocmd vimenter * NERDTree

" Hack to put preview window on the bottom
function! PreviewDown()
   if !&previewwindow
       silent! wincmd P
   endif
   if &previewwindow
       silent! wincmd J
       silent! wincmd p
   endif
endf
au BufWinEnter * call PreviewDown()

" Remember last position
set viminfo='10,\"100,:20,%,n~/.viminfo
function! ResCur()
  if line("'\"") <= line("$")
    normal! g`"
    return 1
  endif
endfunction
augroup resCur
  autocmd!
  autocmd BufWinEnter * call ResCur()
augroup END

" Select all
nmap <C-a> ggVG

" Move betwene windows
nmap <silent> <A-Up> :wincmd k<CR>
nmap <silent> <A-Down> :wincmd j<CR>
nmap <silent> <A-Left> :wincmd h<CR>
nmap <silent> <A-Right> :wincmd l<CR>

au FileType javascript set dictionary+=$HOME/.vim/bundle/vim-node/dict/node.dict

let g:neosnippet#snippets_directory="~/.vim/snippets/"

" Make TAB and SHIFT+TAB work
vnoremap <Tab> >
vnoremap <S-Tab> <

" Saving in console
if !has("gui_running")
    :nmap <c-s> :w<CR>
    :imap <c-s> <Esc>:w<CR>a
    :imap <c-s> <Esc><c-s>
endif

" Font resizing for gvim
let s:pattern = '^\(.* \)\([1-9][0-9]*\)$'
let s:minfontsize = 6
let s:maxfontsize = 16
function! AdjustFontSize(amount)
  if has("gui_gtk2") && has("gui_running")
    let fontname = substitute(&guifont, s:pattern, '\1', '')
    let cursize = substitute(&guifont, s:pattern, '\2', '')
    let newsize = cursize + a:amount
    if (newsize >= s:minfontsize) && (newsize <= s:maxfontsize)
      let newfont = fontname . newsize
      let &guifont = newfont
    endif
  else
    echoerr "You need to run the GTK2 version of Vim to use this function."
  endif
endfunction

function! LargerFont()
  call AdjustFontSize(1)
endfunction
command! LargerFont call LargerFont()

function! SmallerFont()
  call AdjustFontSize(-1)
endfunction
command! SmallerFont call SmallerFont()

if has("gui_running")
    nnoremap <C-Up> :silent! LargerFont<CR>
    nnoremap <C-Down> :silent! SmallerFont<CR>
endif