~/.vimrc: Use neat buffer and file completion

.vimrc

map <Leader>t :TagbarToggle<CR>
"" mappings and options inspired by https://www.vi-improved.org/recommendations/
nnoremap <leader>b :b <c-d>
nnoremap <leader>q :b#<cr>
nnoremap <leader>e :e **/
nnoremap <leader>b :Buffers<cr>
nnoremap <leader>e :Files<cr>
"nnoremap <leader>b :b <c-d>
"nnoremap <leader>e :e **/
inoremap ,f <c-x><c-f>
inoremap ,n <c-x><c-n>