" smckown .vimrc file

" Tricky to get a nice terminal color scheme that works well in both vim and
" gvim.  Step 1 is to ensure that vi knows the underlying device is 256 color
" capable.  The solution of setting xterm:
"   TERM=xterm-256color in .bashrc:
"   if [[ $TERM == xterm && $COLORTERM == gnome* ]]; then
"     export TERM=xterm-256color
"   fi
" ... works for vi, but seems to cause problems with the terminal pager.
" Setting t_Co at the very top of vimrc so all the plugins see the setting
" seems to be working the best.
set t_Co=256

filetype off

" Set the correct font for gvim
if has("gui_running")
  if has("gui_gtk2")
    set guifont=DejaVu\ Sans\ Mono\ for\ Powerline\ 9
  elseif has("gui_macvim")
    set guifont=Menlo\ Regular:h14
  elseif has("gui_win32")
    set guifont=Consolas:h11:cANSI
  endif
endif

" Local listchars def if utf-8 terminal.  Otherwise sensible defaults are OK.
if &termencoding ==# 'utf-8' || &encoding ==# 'utf-8'
  "let &listchars = tab:»·,trail:·
  let &listchars = "tab:»·,trail:\u2423,extends:\u21c9,precedes:\u21c7,nbsp:\u26ad"
endif

" Disable certain keys that aren't very helpful
nnoremap <F1> <ESC>
inoremap <F1> <ESC>
vnoremap <F1> <ESC>
nnoremap <up> <nop>
nnoremap <down> <nop>
nnoremap <left> <nop>
nnoremap <right> <nop>
inoremap <up> <nop>
inoremap <down> <nop>
inoremap <left> <nop>
inoremap <right> <nop>
vnoremap <up> <nop>
vnoremap <down> <nop>
vnoremap <left> <nop>
vnoremap <right> <nop>

" Try out <space> as <leader>
map <space> <leader>

" Make tabs and trailing spaces visible.  Show them and special chars in gray.
highlight NonText ctermfg=gray guifg=gray
highlight SpecialKey ctermfg=gray guifg=gray
set list

" Set default indent policy.  smarttab, roundshift enabled by sensible
set softtabstop=2 shiftwidth=2 expandtab

" cinoptions for code formatting
set cinoptions=t0,U1,k2s,j1,J1

" Local netrw hide list.  Sensible default shows .o files, etc.
let g:netrw_list_hide = '\~$,^tags$,\.swp$,\.o$,\.pyc$,\.class$'

" Preferred local settings
"set visualbell noerrorbells		" Bells set to visual only
set novisualbell noerrorbells		" Bells set to visual only
set number				" Use con to toggle numbers
set relativenumber			" Use cor to toggle relative numbers
"set mouse=a				" Enable mouse (thinkpad scroll)
set scrolloff=5				" Cursor offset from screen top/bottom
set hidden				" Don't warn when hiding a changed buffer
set modeline				" Best not to allow per-file override
if exists('+cursorline')
  " unimpaired.vim adds change option: coc toggles cursorline
  "hi CursorLine cterm=NONE,underline	" Underline makes '_' and ' ' alike
  "set cursorline			" Highlight current line
  "nnoremap <leader>c :set cursorline!<CR>
endif

" Search options
" unimpaired.vim adds change option: coh toggles hlsearch
set ignorecase smartcase nohlsearch

" Ignore files
set wildignore=*.swp,*.bak,*.o,*.pyc,*.class,*.a,*.so

" Mapping for paste toggle
nnoremap <F2> :set invpaste paste?<CR>
set pastetoggle=<F2>

" Use Q for formatting the current paragraph (or selection)
vmap Q gq
nmap Q gqap

" Spell check
" unimpaired.vim adds change option: cos toggles spell
"nmap <silent> <leader>s :set spell!<CR> :set spell?<CR>
set spelllang=en

" The simpler solution to the above, which generates a column
if exists('+colorcolumn')
  if v:version >= 703
    " Set color column relative to defined textwidth.
    " Highlights the column immediately after the last valid.
    set colorcolumn=+1
  else
    set colorcolumn=80
  endif
else
  au BufWinEnter * let w:m2=matchadd('ErrorMsg', '\%>80v.\+', -1)
endif

nnoremap <leader>W :call <SID>StripTrailingWhitespace()<CR>
function! <SID>StripTrailingWhitespace()
  " Save last search, and cursor position.
  let _s=@/
  let l = line(".")
  let c = col(".")
  " Perform the substitution.
  %s/\s\+$//e
  " Restore last search and cursor position.
  let @/=_s
  call cursor(l, c)
endfunction

" Implement 'cot' -- Toggle formatoption 't' -- wrap texts to textwidth
nnoremap cot :call ToggleFormatOptionT()<CR>
function! ToggleFormatOptionT()
  let tmp = substitute(&formatoptions, 't', '', '')
  if &formatoptions == tmp
    set fo+=t
    :echo "Enable text wrap"
  else
    set fo-=t
    :echo "Disable text wrap"
  endif
endfunction

" Implement 'coa' -- Toggle formatoption 'a' -- auto-wrap paragraphs
nnoremap coa :call ToggleFormatOptionA()<CR>
function! ToggleFormatOptionA()
  let tmp = substitute(&formatoptions, 'a', '', '')
  if &formatoptions == tmp
    set fo+=a
    :echo "Enable auto-wrap paragraphs"
  else
    set fo-=a
    :echo "Disable auto-wrap paragraphs"
  endif
endfunction

" Set secure features
set nobackup
set nowritebackup
set noundofile
set noswapfile
set viminfo=""
set noshelltemp
set history=0
set nomodeline
set secure