This plugin simply highlights whitespace as it should look like in a
good integrated development environment so you can differentiate between
tabs, spaces, and trailing whitespace. Tabs are highlighted with
straight lines and a pipe symbol to separate them. Multiple spaces,
leading spaces, and trailing spaces are marked with a simple dot symbol.
Highlighting trailing whitespace with the Error
highlight group is
only done when not in insert mode. The result is smart, professional
whitespace highlighting that makes Neovim look like an IDE.
Plug "amarakon/vim-markspace"