What is the default commit message ?

By default, the commit message is empty

Does git allow empty commit message ?

Yes, not by default but given --allow-empty-message

This is an uncommon use case

Why having an empty commit message ?

The TCRDD methodology encourages to do baby steps

When doing so, the commit are so small that almost every times, the only possible message is describing what has been changed which a kind of repetition with the commit's content

How to avoid empty commit message ?

Give an optional message when gambling

When gambling :

add a message with the option --message (or -m) followed by the message
```
git gamble --red --message "This is a great message"
```
open the default editor to write a message with the option --edit
```
git gamble --red --edit
```

It may be a good idea to add a message when enabling a feature flag

Rearrange commits after

Add the end of iterations, the history can be rewritten using git rebase, commits can even be squashed