On 06/07/2023 16:54, Ihor Radchenko wrote:
> You are removing `org-protocol-flatten' function, which is a breaking
> change. We should leave an obsolete alias.

I have added an alias for this function hardly known to anybody else.

> Also, you are defining `flatten-tree' function, which is outside Org's
> namespace. We should better avoid it and use something like
> `org-flatten-tree'.

The idea was to minimize conflicts with your branch for the compat 
package. I hope, it will be merged soon.