No, Copy Message works for multiple selected commits - at least in the latest SmartGit 17.

Why not use Copy Message?

Will be harder than usual because of the index saving which is special in the Index Editor.

What about a hook that rejects screwed up line endings?

What if a multiple branches or tags point to the selected commit?

SmartGit supports different SSH keys for different servers. For multiple ~/.gitconfig files, please vote for http://smartgit.userecho.com/topics/350-full-multi-profile-system/.

Quite often it happens that when I'm on develop starting something that it gets larger than initially expected. Then creating a new feature works perfectly, so I reckon it seems to depend on what branch you actually are starting to work.

You already can do that. Just select both files and invoke Query | Show Changes. You will be asked whether to "Compare with Each Other" or "Compare with Repository".

How to do that for .zip, .tar.gz?