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.
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
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.
