MSWordExportBase: ignore empty annotation marks

Change-Id: I182700a7b74aa65a1eeb39ff702f068a10dd3346

sw/qa/extras/ooxmlexport/ooxmlexport.cxx

@@ -231,6 +231,28 @@ DECLARE_OOXMLEXPORT_TEST(testShapeInFloattable, "shape-in-floattable.docx")
     }
 }
 
+DECLARE_OOXMLEXPORT_TEST(testEmptyAnnotationMark, "empty-annotation-mark.docx")
+{
+    if (mbExported)
+    {
+        // Delete the word that is commented, and save again.
+        uno::Reference<text::XTextRange> xRun = getRun(getParagraph(1), 3);
+        CPPUNIT_ASSERT_EQUAL(OUString("with"), xRun->getString());
+        xRun->setString("");
+        uno::Reference<frame::XStorable> xStorable(mxComponent, uno::UNO_QUERY);
+        xStorable->store();
+
+        // Then inspect the OOXML markup of the modified document model.
+        xmlDocPtr pXmlDoc = parseExport("word/document.xml");
+        // There were two commentReference nodes.
+        assertXPath(pXmlDoc, "//w:commentReference", "id", "0");
+        // Empty comment range was not ignored on export, this was 1.
+        assertXPath(pXmlDoc, "//w:commentRangeStart", 0);
+        // Ditto.
+        assertXPath(pXmlDoc, "//w:commentRangeEnd", 0);
+    }
+}
+
 CPPUNIT_PLUGIN_IMPLEMENT();
 
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

sw/source/filter/ww8/wrtw8nds.cxx

@@ -1806,7 +1806,12 @@ bool MSWordExportBase::GetAnnotationMarks( const SwTxtNode& rNd, sal_Int32 nStt,
             bool bIsStartOk = ( pMark->GetMarkStart().nNode == nNd ) && ( nBStart >= nStt ) && ( nBStart <= nEnd );
             bool bIsEndOk = ( pMark->GetMarkEnd().nNode == nNd ) && ( nBEnd >= nStt ) && ( nBEnd <= nEnd );
 
-            if ( bIsStartOk || bIsEndOk )
+            // Annotation marks always have at least one character: the anchor
+            // point of the comment field. In this case Word wants only the
+            // comment field, so ignore the annotation mark itself.
+            bool bSingleChar = pMark->GetMarkStart().nNode == pMark->GetMarkEnd().nNode && nBStart + 1 == nBEnd;
+
+            if ( ( bIsStartOk || bIsEndOk ) && !bSingleChar )
             {
                 rArr.push_back( pMark );
             }