" Basic settings
set autoindent      " copy indent from current line for new lines.
set autowrite       " save a modified file if you suspend your session.
set directory=/tmp  " where your edit recovery file goes.
set nobackup        " don't make automatic backups, I'll handle that.
set nomodeline      " for security.
set noremap         " don't let key mappings work recursively.
set redraw          " redraw screen when VIM starts.
set shell=/bin/sh   " use this shell for external commands.
set wm=2            " wrap line when 2 chars from right border.
set writeany        " allow writing a file without checking its mode.

" Status line
set ls=2
set statusline=%F%h%m%r%=chr:0x%B\ \ %l,%c%V\ %P

" Key mappings
map   ;   >>
map   =   <<
map   g   <C-Z>
map   V   }jmbk{ma}:'a,.!fmt -1\|fmt<CR>'b
map   q   z.
map   E o<Esc>i....+....1....+....2....+....3....+....4....+....5....+....6....+....7....+<Esc>

" Date and time abbreviations
inoremap ,d <C-R>=strftime("%a, %d %b %Y %T %z")<CR>
map ,t :.!sh -c 'line=`cat`; date -d "$line"'<CR>

if has("unix")
    iab _day  <c-r>=strftime("%a, %d %b %Y")<CR>
    iab _date <c-r>=strftime("%a, %d %b %Y %X %z")<CR>
    iab _time <c-r>=strftime("%H:%M:%S")<CR>
endif

" Tabs
set shiftwidth=4
set tabstop=4
set expandtab

" Utility functions
autocmd BufWritePre * ks|call TimeStamp()|'s

function! TimeStamp()
 if &modified
   let lines = line("$") < 5 ? line("$") : 5
   let pattern1 = '\(Last [Mm]odified:\).*'
   let replace1 = '\1' . strftime(" %a, %d %b %Y %T %z")
   execute printf('1,%ds/\C\m%s/%s/e', lines, pattern1, replace1)
   execute printf('$-%d+1,$s/\C\m%s/%s/e', lines, pattern1, replace1)
   let pattern2 = '\($Id: \f\+ \d\+\.\d\+\(\.\d\+\.\d\+\)*\)\(+\(\d\+\)\)\?'
   let replace2 = '\=submatch(1) . "+" . (submatch(4) + 1)'
   execute printf('1,%ds/\C\m%s/%s/e', lines, pattern2, replace2)
   execute printf('$-%d+1,$s/\C\m%s/%s/e', lines, pattern2, replace2)
 endif
endfunction