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" Don't wrap by default, but use \w to toggle it on or off quickly
set nowrap
nnoremap <Leader>w :setlocal wrap! wrap?<CR>

" When wrapping text, if a line is so long that not all of it can be shown on
" the screen, show as much as possible anyway; by default Vim fills the left
" column with @ symbols instead, which I don't find very helpful
set display=lastline

" When wrapping, j and k should move by screen row, and not to the same
" column number in the previous logical line, which feels very clumsy and is
" seldom particularly helpful; you can use n| to jump to the nth column in a
" line anyway if you need to
nnoremap j gj
nnoremap k gk

" Line break settings and mappings
if has('linebreak')

  " Break lines at word boundaries if possible
  set linebreak

  " Precede continued lines with '...'
  set showbreak=...

  " If we have the option, indent wrapped lines as much as the first line
  if has('&breakindent')
    set breakindent
  endif

  " \b toggles copy-pasteable linebreak settings
  nmap <leader>b <Plug>CopyLinebreak

endif