File preview with FZF, RG, Bat, and Devicons (supports multiple file open and opening files in splits and tabs)

init.vim

" ripgrep
if executable('rg')

  let $FZF_DEFAULT_COMMAND = 'rg --files --hidden --follow --glob "!.git/*"'
  set grepprg=rg\ --vimgrep
  command! -bang -nargs=* Find call fzf#vim#grep('rg --column --line-number --no-heading --fixed-strings --ignore-case --hidden --follow --glob "!.git/*" --color "always" '.shellescape(<q-args>).'| tr -d "\017"', 1, <bang>0)  
  
  " Overriding fzf.vim's default :Files command.
  " Pass zero or one args to Files command (which are then passed to Fzf_dev). Support file path completion too.
  command! -nargs=? -complete=file Files call Fzf_dev(<q-args>)

  nnoremap <silent> <leader>e :Files<CR>

endif

" Files + devicons
function! Fzf_dev(qargs)
  let l:fzf_files_options = '--preview "bat --theme="OneHalfDark" --style=numbers,changes --color always {2..-1} | head -'.&lines.'" --expect=ctrl-t,ctrl-v,ctrl-x --multi --bind=ctrl-a:select-all,ctrl-d:deselect-all'

  function! s:files(dir)
    let l:cmd = $FZF_DEFAULT_COMMAND
    if a:dir != ''
      let l:cmd .= ' ' . shellescape(a:dir)
    endif
    let l:files = split(system(l:cmd), '\n')
    return s:prepend_icon(l:files)
  endfunction

  function! s:prepend_icon(candidates)
    let l:result = []
    for l:candidate in a:candidates
      let l:filename = fnamemodify(l:candidate, ':p:t')
      let l:icon = WebDevIconsGetFileTypeSymbol(l:filename, isdirectory(l:filename))
      call add(l:result, printf('%s %s', l:icon, l:candidate))
    endfor

    return l:result
  endfunction
  
  function! s:edit_file(lines)
    if len(a:lines) < 2 | return | endif

    let l:cmd = get({'ctrl-x': 'split',
                 \ 'ctrl-v': 'vertical split',
                 \ 'ctrl-t': 'tabe'}, a:lines[0], 'e')
    
    for l:item in a:lines[1:]
      let l:pos = stridx(l:item, ' ')
      let l:file_path = l:item[pos+1:-1]
      execute 'silent '. l:cmd . ' ' . l:file_path
    endfor
  endfunction

  call fzf#run({
        \ 'source': <sid>files(a:qargs),
        \ 'sink*':   function('s:edit_file'),
        \ 'options': '-m ' . l:fzf_files_options,
        \ 'down':    '40%' })
endfunction

Thanks for the update to open the selected files in tab/split windows.

One thing I noticed is that this does not grep for the pattern to select the files. Instead it selects the files whose names match the given query string.

Any help to make it grep for the contents of the files rather than match name of the files?

Thanks

@gbnaidu For grepping file contents, I took a different approach. Not saying this is the best way but it's what has worked for me. Refer to this gist for details.

I've been trying to do this for whole day. Thanks!

Appreciate your work!