This is a **bridge module** between ``survey_xlsx_expand_multiple_choice``
and ``survey_extra_fields``.

``survey_extra_fields`` adds a *File* question type, whose answers are
uploaded attachments that cannot be represented in a spreadsheet cell. This
module excludes those *File* questions from the **Survey Results XLSX
export**: they get no column at all, instead of an unusable one.

It installs automatically (``auto_install``) as soon as both
``survey_xlsx_expand_multiple_choice`` and ``survey_extra_fields`` are
installed, and is uninstalled when either of them is removed. There is
nothing to configure.

.. warning::

   The exclusion is implemented through the report extension hooks provided
   by ``survey_xlsx_expand_multiple_choice``, which itself relies on hooks
   added to ``survey_xlsx`` by this pull request:

   https://github.com/elabore-coop/survey/pull/1

   Without those hooks, *File* questions are not filtered out of the export.