Diff two tabs in Vim

buffer, diff, tabs, vim, vimdiff

Solution

I suggest opening the second file in the same tab instead of a new one.

Here's what I usually do:

:edit file1
:diffthis
:vnew
:edit file2
:diffthis

The `:vnew` command splits the current view vertically so you can open the second file there. The `:diffthis` (or short: `:difft`) command is then applied to each view.

Problem

Scenario: I have opened Vim and pasted some text. I open a second tab with `:tabe` and paste some other text in there. Goal: I would like a third tab with a output equivalent to writing both texts to files and opening them with `vimdiff`. The closest I can find is "diff the current buffer against a file", but not `diff`ing two open but unsaved buffers.

Original source