Re: Ediff: compare two (long) buffers Word-by-word

[B. T. Raven]

On 11/24/2018 1:33 PM, ST wrote:
> Hello,
>
> I use Emacs 26.1 and try to compare two (long) buffers (opened side by
> side) by clicking Tools -> Compare (Ediff) -> Windows Word-by-word...
> Then I choose both Windows (A and B) by clicking on each opened buffer.
> However it looks like Emacs compares only the visible parts of the two
> buffers, not the whole buffers. Why?

If you display the same buffer in 2 windows and then scroll one window 
past what is displayed in the other window, ediff-windows-wordwise 
doesn't find any differences. I've never used it before and I don't know 
what it's usefulness might be. It must be some kind of
short-cut for ediff-buffers used with only 2 buffers.

> I saw there is a command `ediff-windows-wordwise`... How is "Window"
> defined? - as "currently visible part of a buffer"? If yes, is there
> something like `ediff-buffers-wordwise`?
A window is just the non-overlapping screen area where a buffer is 
displayed.
Type C-h f ediff- tab tab and you'll see all the ediff functions. 
ediff-buffers is probably the one you want. It can also be accessed from 
the menu.
> I have `git` in `exec-path`, so maybe I can make ediff to display the
> output of `git diff --word-diff file1 file2` in ediff style?

Probably; M-! will let you enter a shell command.

> https://emacs.stackexchange.com/questions/46161/ediff-compare-two-long-buffers-word-by-word
>
> Thank you!

Ed