Re: How can I find changes before saving a file?

[Le Wang]

PL wrote:

> If I have edited a file and want to see what changes I have made, how
> can I do that? I can of course use "Ctrl-x u" to undo the changes
> one-by-one, but that's not really what I want to do. Then I would have
> to re-do the un-doings to get the file back...
> 
> Another way is to copy the file on disk, save the file, and compare
> with the copy. But that means I have to save the file. I want to be
> able to find the edits *before* I save.
> 
> Any ideas, anyone?

Look into highlight-changes-mode.  I don't see a reason why this can't be done 
using the undo information, though.  That sounds smarter and more efficient 
to me.

--
Le