extra

Using g:plugs

Automatically install missing plugins on startup

if !empty(filter(copy(g:plugs), '!isdirectory(v:val.dir)'))
  autocmd VimEnter * PlugInstall | q
endif

PlugDiff

gx to open GitHub commit URL on browser (OS X)

Press gx to open GitHub URL for the commit with the default browser. You'll need to change open command to xdg-open or the likes on Linux.

function! s:plug_gx()
  let sha = matchstr(getline('.'), '^  \zs[0-9a-f]\{7}\ze ')
  if empty(sha)
    return
  endif
  let name = getline(search('^- .*:$', 'bn'))[2:-2]
  let uri = get(g:plugs[name], 'uri', '')
  if uri !~ 'github.com'
    return
  endif
  execute printf('silent !open https://github.com/%s/commit/%s',
          \ matchstr(uri, '[^:/]*/'.name), sha)
  redraw!
endfunction

augroup PlugDiffGx
  autocmd!
  autocmd FileType vim-plug nnoremap <silent> <buffer> gx :call <sid>plug_gx()<cr>
augroup END

Extra key bindings

(suggested by @sodapopcan)

• J / K to scroll the preview window
• CTRL-N / CTRL-P to move between the commits
• CTRL-J / CTRL-K to move between the commits and synchronize the preview window

function! s:scroll_preview(down)
  silent! wincmd P
  if &previewwindow
    execute 'normal!' a:down ? "\<c-e>" : "\<c-y>"
    wincmd p
  endif
endfunction

function! s:setup_extra_keys()
  nnoremap <silent> <buffer> J :call <sid>scroll_preview(1)<cr>
  nnoremap <silent> <buffer> K :call <sid>scroll_preview(0)<cr>
  nnoremap <silent> <buffer> <c-n> :call search('^  \zs[0-9a-f]')<cr>
  nnoremap <silent> <buffer> <c-p> :call search('^  \zs[0-9a-f]', 'b')<cr>
  nmap <silent> <buffer> <c-j> <c-n>o
  nmap <silent> <buffer> <c-k> <c-p>o
endfunction

augroup PlugDiffExtra
  autocmd!
  autocmd FileType vim-plug call s:setup_extra_keys()
augroup END