This is a regression from bce84f279755171addf29b61f4e8b09e89026c44, for empty user-defined functions use "#REF!" bug-document: forum-mso-de-49320.xls Change-Id: I67d43b8adaf53c1d54aaf91db58dfff3b005310d Reviewed-on: https://gerrit.libreoffice.org/c/core/+/201983 Reviewed-by: Michael Stahl <michael.stahl@collabora.com> Tested-by: Jenkins CollaboraOffice <jenkinscollaboraoffice@gmail.com> (cherry picked from commit 66e7fb01de87ad8cb15fe56539549eca158e7ab6) Reviewed-on: https://gerrit.libreoffice.org/c/core/+/202812 Signed-off-by: Xisco Fauli <xiscofauli@libreoffice.org> Reviewed-on: https://gerrit.libreoffice.org/c/core/+/204260 Tested-by: Jenkins