Hello Bastien,

> Thanks for the patch.  I tried it and these two tests fail:
> 
>    FAILED  test-org-datetree/find-date-create
>    FAILED  test-org-datetree/find-iso-week-create
> 
> Perhaps you can check the value of `org-blank-before-new-entry' and
> insert a blank line only if needed?

I've looked at the tests and concluded that your proposed approach is better
and updated the patch accordingly.

Vasilij