Text editor with revision functionality (win32)

Question

I need a text editor which can save to its own format, storing change-by-change, character-by-character revisions, and possibly playing them back. Do you know any offline app with this capability?

The revision functionality already exists in Etherpad, an online collaborative editor. I need a similar, but offline app.

Answer 1

vim has a pretty large undo and redo buffer - You can undo any number of changes (I'm unsure what the limit is) and redo them. Does that do what you want?

Update:

Persistent undo is like a local version control system that you don't have to manage. To set it up simply put this in your .vimrc:

set undodir=~/.vim/undodir
set undofile
set undolevels = 1000 "maximum number of changes that can be undone
set undoreload = 10000 "maximum number lines to save for undo on a buffer reload

To get more help simply type:

:help new-persistent-undo

Answer 2

You can do this with any text editor out there, even plain old notepad, by using it in conjunction with revision control software like SVN. Some text editors, like Notepad++, have support such software included either directly or via plugin.

Answer 3

I think e-texteditor provides this functionality through the personal revision branches:

http://e-texteditor.com/blog/2006/making-undo-usable