Neinspace is a vim plugin that cleans whitespaces and other craps.

1. Show trailing spaces and tabs.
2. Remove trailing spaces and tabs.
3. Remove ^M at the end of the line, which is the carriage return in Windows.
4. Convert tab to spaces based on the tabstop setting.

Vundle is the recommended plugin manager.

Add Bundle 'initrc/neinspace' to ~/.vimrc and run :BundleInstall.

Neinspace shows tab as >- and trailing space as ..

Map the keyboard shortcut.

nnoremap <silent> <leader>w :NeinspaceClear<CR>