" Configuration file for vim

set nocompatible        " Use Vim defaults (much better!)
set showcmd             " Show (partial) command in status line.
set showmatch           " Show matching brackets.
set notimeout           " i like to enter commands slowly
set ruler               " the ruler on the bottom is really useful      
set nottimeout          " take as long as i like to type commands
set ignorecase          " Do case insensitive matching
set incsearch           " Incremental search
set expandtab           " Get rid of tabs altogether and replace with spaces
set autoindent          " always set autoindenting on
set nofen               " disable folds
set linebreak           " This displays long lines as wrapped at word boundries
set wildmenu            " This is used with wildmode(full) to cycle options 
set nobackup            " Don't keep a backup file
set hidden              " This does not require the buffer to be saved all the time
"set noswapfile          " this guy is really annoyoing sometimes
set cscopequickfix=s-,c-,d-,i-,t-,e-,g-,f- "useful for cscope in quickfix
set textwidth=0         " Don't wrap words by default
set history=50          " keep 50 lines of command line history
set whichwrap+=<,>,[,],h,l,~  "arrow keys can wrap in normal and insert modes
set helpfile=$VIMRUNTIME/doc/help.txt "this may not be universal
set backspace=2         " allow backspacing over everything in insert mode
set matchtime=10
set softtabstop=4       " Why are tabs so big?  This fixes it
set shiftwidth=4                " dont indent like mad when editing code
set cindent shiftwidth=4        " dont indent like mad when editing code
"set guifont=Courier\ 10\ Pitch\ 10
set ve=block            " let blocks be in virutal edit mode
set laststatus=2        " always have status bar
set foldmethod=indent   " use indent unless overridden
set scrolloff=1         " dont let the curser get too close to the edge
set textwidth=80        " This wraps a line with a break when you reach 80 chars
"set wrapmargin=80      " When pasteing, use this, because textwidth becomes 0
                        " wrapmargin inserts breaks if you exceed its value
set wildmode=list:longest,full  "list all options, match to the longest
                                "Then more tabs cycle through full completions
set path=/usr/include 

colorscheme darkblue    "better colors

autocmd BufReadPost .z* set ft=zsh  "obscure zsh files need love too

function! InsertTabWrapper(direction)
    let col = col('.') - 1
    if !col || getline('.')[col - 1] !~ '\k'
        return "\<TAB>"
    elseif a:direction == "backward"
        return "\<c-n>"
    else
        return "\<c-p>"
    endif
endfunction

inoremap <TAB> <c-r>=InsertTabWrapper("forward")<cr>
inoremap <S-TAB> <c-r>=InsertTabWrapper("backward")<cr>

fu! CscopeAdd() " Add Cscope database named .cscope.out
    let dir = getcwd()
    let savedir = getcwd()
    wh (dir != '/')
        let scopefile = dir . '/' . ".cscope.out"
        if filereadable(scopefile)
            exe "cs add " scopefile
            exe "cd " savedir
            return dir
        en
        cd ..
        let dir = getcwd()
    endw
    exe "cd " savedir
endf

call CscopeAdd()    "cscope is where the loaded database is located