Show diff when writing commit messages during an interactive rebase

Question

When doing a regular git commit, git commit --verbose shows the diff in the text editor when writing the commit message.

Suppose I am doing an interactive r

Answer 1

To show the diff:

git -c commit.verbose=true rebase --continue

To make all commits verbose without having to specify -c commit.verbose=true every time, add this to ~/.gitconfig:

[commit]
    verbose = true

Reference: man git-config.