"" No need to be compatible with vi and lose features.
set nocompatible

"" Set textwidth to 80, this implies word wrap.
set textwidth=80

"" Show line numbers.
set nu

"" Show line and colum number at right bottom corner.
"" set ruler

"" Backspace can now delete even old signs and line breaks (=carriage return).
"" (Default was: Backspace can not delete old signs and line breaks.)
set bs=2

"" Automatic C-style indenting.
set autoindent

"" When inserting TABs replace them with the appropriate number of spaces
set expandtab
set shiftwidth=2

"" When inserting TABs in Makefiles, hold the length of 4.
set tabstop=4

"" But TABs are needed in Makefiles
au BufNewFile,BufReadPost Makefile se noexpandtab

"" Show matching braces.
set showmatch

"" Choose the right syntax highlightning per TAB-completion :-)
map <F2> :source $VIM/syntax/

"" Syntax highlightning, but only for color terminals.
"" if &t_Co > 1
"" syntax on
"" endif

"" Enable syntax higlighting without precondition.
syntax enable

"" Set update time to 1 second (default is 4 seconds), convenient vor taglist.vim.
set updatetime=500

"" Colours in xterm.
map <F3> :se t_Co=16<C-M>:se t_AB=<C-V><ESC>[%?%p1%{8}%<%t%p1%{40}%+%e%p1%{92}%+%;%dm<C-V><C-M>:se t_AF=<C-V><ESC>[%?%p1%{8}%<%t%p1%{30}%+%e%p1%{82}%+%;%dm<C-V><C-M>

"" Toggle between .h and .cpp with F4.
function! ToggleBetweenHeaderAndSourceFile()
  let bufname = bufname("%")
  let ext = fnamemodify(bufname, ":e")
  if ext == "h"
    let ext = "cpp"
  elseif ext == "cpp"
    let ext = "h"
  else
    return
  endif
  let bufname_new = fnamemodify(bufname, ":r") . "." . ext
  let bufname_alt = bufname("#")
  if bufname_new == bufname_alt
    execute ":e#"
  else
    execute ":e " . bufname_new
  endif
endfunction
map <silent> <F4> :call ToggleBetweenHeaderAndSourceFile()<CR>

"" Keep the horizontal cursor position when moving vertically.
set nostartofline

"" Reformat comment on current line. TODO: explain how.
map <silent> hc ==I  <ESC>:.s/\/\/ */\/\//<CR>:nohlsearch<CR>j

"" Make sure == also indents #ifdef etc.
noremap <silent> == IX<ESC>==:.s/X//<CR>:nohlsearch<CR>

"" Toggle encoding with F12.
function! ToggleEncoding()
  if &encoding == "latin1"
    set encoding=utf-8
  elseif &encoding == "utf-8"
    set encoding=latin1
  endif
endfunction
map <silent> <F12> :call ToggleEncoding()<CR>

"" Do not break long lines.
set nowrap
set listchars=eol:$,extends:>

"" Next / previous error with Tab / Shift+Tab.
map <silent> <Tab> :cn<CR>
map <silent> <S+Tab> :cp<CR>
map <silent> <BS><Tab> :cp<CR>

"" Umlaut mappings for US keyboard.
imap "a ä
imap "o ö
imap "u ü
imap "s ß
imap "A Ä
imap "O Ö
imap "U Ü

"" After this many msecs do not imap.
set timeoutlen=500

"" Always show the name of the file being edited.
"" set ls=2

"" Show the mode (insert,replace,etc.)
set showmode
 
"" No blinking cursor please.
set gcr=a:blinkon0

"" Cycle through completions with TAB (and SHIFT-TAB cycles backwards).
function! InsertTabWrapper(direction) 
    let col = col('.') - 1 
    if !col || getline('.')[col - 1] !~ '\k' 
        return "\<tab>" 
    elseif "backward" == a:direction 
        return "\<c-p>" 
    else 
        return "\<c-n>" 
    endif 
endfunction 
inoremap <tab> <c-r>=InsertTabWrapper ("forward")<cr>
inoremap <s-tab> <c-r>=InsertTabWrapper ("backward")<cr>

"" Cycling through Windows quicker.
map <C-M> <C-W>j<C-W>_ 
map <C-K> <C-W>k<C-W>_ 
map <A-Down>  <C-W><Down><C-W>_
map <A-Up>    <C-W><Up><C-W>_
map <A-Left>  <C-W><Left><C-W>|
map <A-Right> <C-W><Right><C-W>|

"" Do not show any line of minimized windows
set wmh=0

"" Make it easy to update/reload _vimrc.
:nmap ,s :source $HOME/.vimrc 
:nmap ,v :sp $HOME/.vimrc 

"" Latex Suite 1.5 wants it
"" REQUIRED. This makes vim invoke latex-suite when you open a tex file.
filetype plugin on

"" IMPORTANT: win32 users will need to have 'shellslash' set so that latex
"" can be called correctly.
set shellslash

"" IMPORTANT: grep will sometimes skip displaying the file name if you
"" search in a singe file. This will confuse latex-suite. Set your grep
"" program to alway generate a file-name.
set grepprg=grep\ -nH\ $*

"" OPTIONAL: This enables automatic indentation as you type (by 2 spaces)
filetype indent on
set sw=2

"" no placeholders please
let g:Imap_UsePlaceHolders = 0

"" no " conversion please
let g:Tex_SmartKeyQuote = 0

"" don't use Makefile if one is there
let g:Tex_UseMakefile = 0

"" Syntax Highlighting for MhonArc Config files
au BufNewFile,BufRead *.mrc so $HOME/.vim/mhonarc.vim

"" set guifont=Courier10_BT/Roman/10
set gfn=Courier\ 10\ Pitch\ 10
set gfw=
set go=agimrLtT