Take diff of two vertical opened windows in Vim

Question

I\'ve have two files opened. They are opened in vertical mode, next to next. Can I instantly diff these two files without leaving or closing Vim ?

Answer 1

Following up on the earlier answers,

• :windo difft (short for diffthis) will start diff mode in all the open windows.
• :windo diffo (short for diffoff) will stop diff mode in all the open windows.

I have the following mappings in my vimrc to make it easier:

command! Difft windo diffthis
command! Diffo windo diffoff