fdo#85496: editeng: do not add multiple 0-length attributes...

... at the same position.

Since commit 0d57434180db6c8eda8c5b9b704f8a1c18b371df these will be
exported by the ODF filter as duplicate attributes.

Change-Id: I8befe55f61c59ab968409fa03359540c300f9198
(cherry picked from commit 846b56b6b99e334dfa44f1a24640aa3158509854)

2 files changed, 55 insertions, 7 deletions

diff --git a/editeng/qa/unit/core-test.cxx b/editeng/qa/unit/core-test.cxx
index 4090db4d8978..ae4a946bcd0f 100644
--- a/editeng/qa/unit/core-test.cxx
+++ b/editeng/qa/unit/core-test.cxx
@@ -573,6 +573,45 @@ void Test::testSectionAttributes()
         CPPUNIT_ASSERT_EQUAL(0, (int)pSecAttr->mnEnd);
         CPPUNIT_ASSERT_MESSAGE("Attribute array should be empty.", pSecAttr->maAttributes.empty());
     }
+
+
+    {
+        aEngine.Clear();
+        aEngine.SetText("one\ntwo");
+        CPPUNIT_ASSERT_EQUAL(2, aEngine.GetParagraphCount());
+
+        // embolden 2nd paragraph
+        pSet.reset(new SfxItemSet(aEngine.GetEmptyItemSet()));
+        pSet->Put(aBold);
+        aEngine.QuickSetAttribs(*pSet, ESelection(1,0,1,3));
+        // disboldify 1st paragraph
+        SvxWeightItem aNotSoBold(WEIGHT_NORMAL, EE_CHAR_WEIGHT);
+        pSet->Put(aNotSoBold);
+        aEngine.QuickSetAttribs(*pSet, ESelection(0,0,0,3));
+
+        // now delete & join the paragraphs - this is fdo#85496 scenario
+        aEngine.QuickDelete(ESelection(0,0,1,3));
+        CPPUNIT_ASSERT_EQUAL(1, aEngine.GetParagraphCount());
+
+        boost::scoped_ptr<EditTextObject> pEditText(aEngine.CreateTextObject());
+        CPPUNIT_ASSERT_MESSAGE("Failed to create text object.", pEditText.get());
+        std::vector<editeng::Section> aAttrs;
+        pEditText->GetAllSections(aAttrs);
+
+        CPPUNIT_ASSERT_EQUAL(static_cast<size_t>(1), aAttrs.size());
+
+        const editeng::Section* pSecAttr = &aAttrs[0];
+        CPPUNIT_ASSERT_EQUAL(0, (int)pSecAttr->mnParagraph);
+        CPPUNIT_ASSERT_EQUAL(0, (int)pSecAttr->mnStart);
+        CPPUNIT_ASSERT_EQUAL(0, (int)pSecAttr->mnEnd);
+        std::set<sal_uInt16> whiches;
+        for (size_t i = 0; i < pSecAttr->maAttributes.size(); ++i)
+        {
+            sal_uInt16 const nWhich(pSecAttr->maAttributes[i]->Which());
+            CPPUNIT_ASSERT_MESSAGE("duplicate item in text portion attributes",
+                whiches.insert(nWhich).second);
+        }
+    }
 }
 
 CPPUNIT_TEST_SUITE_REGISTRATION(Test);
diff --git a/editeng/source/editeng/editdoc.cxx b/editeng/source/editeng/editdoc.cxx
index e293425544f5..54cdb909312d 100644
--- a/editeng/source/editeng/editdoc.cxx
+++ b/editeng/source/editeng/editdoc.cxx
@@ -1579,14 +1579,23 @@ void ContentNode::AppendAttribs( ContentNode* pNextNode )
             {
                 if ( pTmpAttrib->GetEnd() == nNewStart )
                 {
-                    if ( ( pTmpAttrib->Which() == pAttrib->Which() ) &&
-                         ( *(pTmpAttrib->GetItem()) == *(pAttrib->GetItem() ) ) )
+                    if (pTmpAttrib->Which() == pAttrib->Which())
                     {
-                        pTmpAttrib->GetEnd() =
-                            pTmpAttrib->GetEnd() + pAttrib->GetLen();
-                        rNextAttribs.erase(rNextAttribs.begin()+nAttr);
-                        // Unsubscribe from the pool?!
-                        bMelted = true;
+                        // prevent adding 2 0-length attributes at same position
+                        if ((*(pTmpAttrib->GetItem()) == *(pAttrib->GetItem()))
+                                || (0 == pAttrib->GetLen()))
+                        {
+                            pTmpAttrib->GetEnd() =
+                                pTmpAttrib->GetEnd() + pAttrib->GetLen();
+                            rNextAttribs.erase(rNextAttribs.begin()+nAttr);
+                            // Unsubscribe from the pool?!
+                            bMelted = true;
+                        }
+                        else if (0 == pTmpAttrib->GetLen())
+                        {
+                            aCharAttribList.Remove(nTmpAttr);
+                            --nTmpAttr; // to cancel later increment...
+                        }
                     }
                 }
                 ++nTmpAttr;