[noselasd]

If you want to use it with git:

    git config --global diff.tool meld
    git config --global --add difftool.prompt false

And use git difftool instead of git diff

[gebruikersnaam]

On my Ubuntu based (Xubuntu, Mint) workstations this works without any configuration

  $ meld .

[vocram]

That command is only for diffing against Git HEAD. `git difftool` supports all the ways to diff with Git.