mappings to scroll diff buffer without leaving list of commits

[minusf]

It would be nice to be able to scroll in the diff buffer without leaving the list of commits.

[sodapopcan]

@minusf I asked for similar behaviour in vim-plug. Junegunn offered this solution.

Here is a modified version of it to work with gv.vim for your .vimrc:

function! s:scroll_commits(down) abort
  wincmd p
  execute 'normal!' a:down ? "\<c-e>" : "\<c-y>"
  wincmd p
endfunction

function! s:init_gv_scroll() abort
  nnoremap <silent> <buffer> J :call <sid>scroll_commits(1)<cr>
  nnoremap <silent> <buffer> K :call <sid>scroll_commits(0)<cr>
endfunction

augroup GVextras
  autocmd!
  autocmd FileType GV call s:init_gv_scroll()
augroup END

Change J and K to taste.