tdf#148380 docx export: support CREATEDATE without format

When CREATEDATE is given as a field command without the optional
format string, then export was treating it as bWriteExpand
(aka ww::eUNKNOWN) and just dumped out the field name.

Instead, accept an empty string as a valid number format
in order to maintain it as a field.

In order to do this, we have to also turn off write-expand
for fixed fields, since import always treats CREATEDATE as FIXED.

The other existing example is
writerfilter/qa/cppunittests/dmapper/data/create-date-preserve.docx

DOC: not yet importing as FIXED
RTF: seems to just ignore bWriteExpand and does the right thing anyway.

Change-Id: If0aef38f6730f55b5fa1be6a62e0b6a0b4871658
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/132662
Tested-by: Jenkins
Reviewed-by: Justin Luth <jluth@mail.com>
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>

0 files changed, 0 insertions, 0 deletions