Adds signs on the left hand of your open buffer which mark the changed lines.
Example screen with the customized configuration below.
" Symbol for lines which have been added, default: +
let g:git_diff_added_symbol='⇒'
" Symbol for lines which have been removed, default: -
let g:git_diff_removed_symbol='⇐'
" Symbol for lines which have been changed, default: <>
let g:git_diff_changed_symbol='⇔'
Copyright (c) 2013 Raffael Schmid. See http://raf.mit-license.org/ for further details.