Re: [PATCH] config option core.showroot to enable showing the diff of the root commit

Peter Baumann [off-list ref]
writes:

This allows one to see the root commit as a diff in commands like git-log,
git-show and git-whatchanged. It also modifies git-diff-tree to act as --root
was specified on the commandline. The default is set to true.

Signed-off-by: Peter Baumann <redacted>
---
I'm not sure if making core.showroot acting on git-diff-tree is the
right thing to do. Please check first bevore applying.

I agree that this "use --root by default" belongs to Porcelain
layer, not the plumbing.  We would probably want to do this in
the same way as we do the color in diff.c::git_diff_ui_config().