I prefer using the vim-trailing-whitespace plugin and fixing it manually: https:...

throwaway392 · on Jan 15, 2012

Or you can use my competing plugin: https://github.com/bitc/vim-bad-whitespace

which has some advantages (described in the README)

jdwhit2 · on Jan 15, 2012

One advantage taken from the readme:

  This plugin is better than using the builtin vim 'list' command because it
  doesn't show an annoying highlight while you are typing in insert mode at the
  end of a line.