tdf#94377 RTF export: support comment formatting

The core of this change is that RtfAttributeOutput::PostitField() now
uses WriteOutliner() to handle comment text, instead of trying to output
the plain text as-is.

To have working roundtrip of the comment text, a few more changes are
needed:

1) When emptying the Styles buffer, also empty the StylesEnd one.
2) Annotations don't want a trailing \par, so don't write one for the
last paragraph.
3) Inform the MSWord_SdrAttrIter about where the editeng content will
end up, and make WriteOutliner() accessible outside RtfSdrExport.

Change-Id: I9cbcf4ce5dc3a099d310c6f321ea8e52f8644f9b

1 files changed, 1 insertions, 0 deletions

diff --git a/sw/source/filter/ww8/rtfattributeoutput.hxx b/sw/source/filter/ww8/rtfattributeoutput.hxx
index e13fcd6c2ec8..77e2303611d8 100644
--- a/sw/source/filter/ww8/rtfattributeoutput.hxx
+++ b/sw/source/filter/ww8/rtfattributeoutput.hxx
@@ -82,6 +82,7 @@ public:
     {
         return m_aStyles;
     }
+    OStringBuffer& StylesEnd();
 
     /// Output text (without markup).
     virtual void RawText(const OUString& rText, rtl_TextEncoding eCharSet) override;