Hi Alex,

On Wed, 22 Feb 2023, Alex Henrie wrote:

The unusual syntax --rebase-merges="" (that is, --rebase-merges with an
empty string argument) has been an undocumented synonym of
--rebase-merges=no-rebase-cousins. Stop accepting that syntax to avoid
confusion when a rebase.merges config option is introduced, where
rebase.merges="" will be equivalent to not passing --rebase-merges.

Being undocumented and obscure might be a good reason for some to consider
this a bug; I do not. You could deprecate it, but there are probably
better ideas than to remove it without prior warning.

If all you want to do is to support `rebase.merges=`, you can do that
without having to change the meaning of `--rebase-merges=`.

Ciao,
Johannes