git grep with fzf on vim

fzf_git_grep.vim

" fzf git grep
command! -bang -nargs=+ Gitgrep call fzf#run({
      \ 'source': 'git grep -n -I -i <args>',
      \ 'sink': function('s:line_handler'),
      \ 'dir': s:get_git_base_path(expand("%:p:h")),
      \ 'up': '~40%',
      \ 'options': '+m'
      \ })

" .gitディレクトリがあるパスを取得する
function! s:get_git_base_path(current_dir) abort
  if isdirectory(expand(a:current_dir . '/.git'))
    return a:current_dir
  else
    let sp_dir = split(a:current_dir, '/')
    call remove(sp_dir, -1)
    return s:get_git_base_path('/' . expand(join(sp_dir, '/'))sn)
  endif
endfunction

" 行が選択された時の動き
function! s:line_handler(line)
  let keys = split(a:line, ':')
  " path
  exec 'e '. keys[0]
  " line
  exec keys[1]

  normal! ^zz
endfunction

This is an old version.
There is the newest version the include more functions in the following link.
https://gist.github.com/hsawaji/a886e60101056264acc5b0bc6c91de94