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inoremap ( ()<esc>:call BC_AddChar(")")<cr>i
inoremap { {<cr>}<esc>:call BC_AddChar("}")<cr><esc>kA<cr>
inoremap [ []<esc>:call BC_AddChar("]")<cr>i
inoremap " ""<esc>:call BC_AddChar(""")<cr>i
" jump out of parenthesis
inoremap <C-j> <esc>:call search(BC_GetChar(), "W")<cr>a
 
function! BC_AddChar(schar)
  if exists("b:robstack")
    let b:robstack = b:robstack . a:schar
  else
    let b:robstack = a:schar
  endif
endfunction
 
function! BC_GetChar()
  let l:char = b:robstack[strlen(b:robstack)-1]
  let b:robstack = strpart(b:robstack, 0, strlen(b:robstack)-1)
  return l:char
endfunction