Show Changes In The Compose Commit Message View
When you execute git commit, you'll be dropped into your default editor
and prompted to compose a commit message. By default you'll only see the
status and names of the files involved in the commit.
To also see the line-by-line-changes in this view, you'll want to commit in verbose mode.
$ git commit --verbose
You can also set verbose mode as the default by updating your ~/.gitconfig
file.
[commit]
verbose = true