Felipe,

I have taken the liberty of reformatting the patch you created for ob-scheme.
You can find it enclosed.

If it is fine with you and the org-mode maintainers it can be applied as-is,
particularly since it is a tiny change.
I have also added some additional information to the commit message, such as
when the `geiser-eval-region/wait' function was introduced.

Please feel free to contact me in regards to any comments or questions you may
have.

Vale,

- Tim Van den Langenbergh