How to highlight lines changed since the last save of a file in Vim?
vim
Solution
Straight from Vim documentation (see `:help :DiffOrig`):
if !exists(":DiffOrig")
command DiffOrig vert new | set bt=nofile | r # | 0d_ | diffthis
\ | wincmd p | diffthis
endif
Then just do `:DiffOrig` et voila!
Problem
Is it possible to have Vim highlight the changed lines since the last save? I know it can be done with version control, but can it be done without? I do not want to use any version control system, because the code I work on does not have that. I think, UltraEdit has something like that.