Wrap the text portions inside the content control in a
<loext:content-control> XML element. Also map the (so far) single UNO
property of it to <loext:content-control
loext:showing-place-holder="...">.
This is just initial export for inline text content controls, more
properties are to be added in follow-up commits.
Change-Id: I5d928255b925ed7e08fb635ba39f546e9a4879de
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/132717
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>
Tested-by: Jenkins
cf5bbe3fce