Is there a way to view complete git diff using a GUI tool?

Question

Is there a combination of a GUI diff viewer and a git configuration that would allow me to view all modified files at once? Currently I use git difftool and it invokes a separate diff viewer for each file. It would be great if there was a way to force git to put both versions of all modified files somewhere and invoke the diff tool for all of them only once.

Answer 1

With svn I use KDE "kompare" program to view all files at ones.

Like here:

svn diff > output
kompare output

or directly:

svn diff | kompare

also there are Gnom "meld", which supposed to do the same thing (but I didn't tried it yet).

The same should be applicable for git.

Answer 2

Since git 1.7.11, difftool supports directory comparison:

"git difftool" learned the "--dir-diff" option to spawn external diff tools that can compare two directory hierarchies at a time after populating two temporary directories, instead of running an instance of the external tool once per a file pair.

So you could combine it with an external diff tool, as mentioned in "use Winmerge inside of Git to file diff".