在 stackoverflow 上提了个问题，被老外鄙视并无视了，有没有高手帮解答一下

http://vimdoc.sourceforge.net/htmldoc/options.html#'tabline'

如果你用了 airline 之类的就参考对应 plugin 的文档吧，比如 airline 就可以
```vimscript
let g:airline#extensions#tabline#fnamecollapse = 0
```

" airline vim-airline

let g:airline#extensions#tabline#enabled = 1
let g:airline#extensions#tabline#fnamecollapse = 0
let g:airline#extensions#tabline#fnametruncate = 0
let g:airline#extensions#tabline#show_splits = 0
let g:airline#extensions#tabline#show_tab_nr = 0
let g:airline#extensions#tabline#show_close_button = 0