oox/qa/unit/export.cxx                            |   21 ++++++++++++-
 sw/source/filter/ww8/docxattributeoutput.cxx      |   28 ++++++++++++++---
 sw/source/filter/ww8/wrtw8nds.cxx                 |    8 +++++
 writerfilter/source/dmapper/DomainMapper_Impl.cxx |   35 +++++++++++++++++++++-
 4 files changed, 85 insertions(+), 7 deletions(-)

New commits:
commit 23a662af7d9385bf20afeab36a684bbdfe48045d
Author:     Ashod Nakashian <ashod.nakash...@collabora.co.uk>
AuthorDate: Sat Feb 17 11:25:37 2024 -0500
Commit:     Miklos Vajna <vmik...@collabora.com>
CommitDate: Wed Feb 21 13:34:07 2024 +0100

    docx import: correct redline content-controls
    
    When inserting and deleting content-controls
    with change-tracking enabled, we hit a few
    corner-cases that we need to handle more
    smartly.
    
    First, we shouldn't redline the controls
    themselves, just the placeholder text.
    Second, we have to take special care
    to create valid XML structure with
    the redline tags.
    
    Includes unit-test that reproduces the
    issues and verifies that both saving
    and loading work as expected.
    
    (cherry picked from commit 1b0f67018fa1d514ebca59e081efdd24c1d7811b)
    
    Change-Id: I6af4d0d2c3f0661e7990d5414cc93effc96f0469
    Reviewed-on: https://gerrit.libreoffice.org/c/core/+/163681
    Tested-by: Jenkins CollaboraOffice <jenkinscollaboraoff...@gmail.com>
    Reviewed-by: Miklos Vajna <vmik...@collabora.com>

diff --git a/oox/qa/unit/export.cxx b/oox/qa/unit/export.cxx
index 4ad6dce4e288..bfee2e7ef8b3 100644
--- a/oox/qa/unit/export.cxx
+++ b/oox/qa/unit/export.cxx
@@ -9,6 +9,9 @@
 
 #include <test/unoapixml_test.hxx>
 
+#include <com/sun/star/text/ControlCharacter.hpp>
+#include <com/sun/star/text/XTextDocument.hpp>
+
 using namespace ::com::sun::star;
 
 namespace
@@ -97,14 +100,30 @@ CPPUNIT_TEST_FIXTURE(Test, 
testInsertCheckboxContentControlDocx)
     {
         loadFromFile(u"dml-groupshape-polygon.docx");
 
+        uno::Reference<text::XTextDocument> xTextDocument(mxComponent, 
uno::UNO_QUERY);
+        uno::Reference<text::XText> xText = xTextDocument->getText();
+        uno::Reference<text::XTextCursor> xCursor = xText->createTextCursor();
+
         // With TrackChanges, the Checkbox causes an assertion in the sax 
serializer,
         // in void 
sax_fastparser::FastSaxSerializer::endFastElement(sal_Int32).
         // Element == maMarkStack.top()->m_DebugStartedElements.back()
         // sax/source/tools/fastserializer.cxx#402
         dispatchCommand(mxComponent, ".uno:TrackChanges", {});
+
+        xText->insertControlCharacter(xCursor, 
text::ControlCharacter::PARAGRAPH_BREAK, false);
+
         dispatchCommand(mxComponent, ".uno:InsertCheckboxContentControl", {});
 
-        save("Office Open XML Text");
+        // Loading should not show the "corrupted" dialog, which would assert.
+        saveAndReload("Office Open XML Text");
+
+        // Now that we loaded it successfully, delete the controls,
+        // still with change-tracking enabled, and save.
+        dispatchCommand(mxComponent, ".uno:SelectAll", {});
+        dispatchCommand(mxComponent, ".uno:Delete", {});
+
+        // Loading should not show the "corrupted" dialog, which would assert.
+        saveAndReload("Office Open XML Text");
         // validate(maTempFile.GetFileName(), test::OOXML); // Enable when 
unrelated errors are fixed.
     }
 }
diff --git a/sw/source/filter/ww8/docxattributeoutput.cxx 
b/sw/source/filter/ww8/docxattributeoutput.cxx
index 2bd25dba7b5e..03ada68bcb2d 100644
--- a/sw/source/filter/ww8/docxattributeoutput.cxx
+++ b/sw/source/filter/ww8/docxattributeoutput.cxx
@@ -1965,7 +1965,22 @@ void DocxAttributeOutput::EndRun(const SwTextNode* 
pNode, sal_Int32 nPos, sal_In
     }
 
     // if there is some redlining in the document, output it
-    StartRedline( m_pRedlineData, bLastRun );
+    bool bSkipRedline = false;
+    if (nLen == 1)
+    {
+        // Don't redline content-controls--Word doesn't do them.
+        SwTextAttr* pAttr
+            = pNode->GetTextAttrAt(nPos, RES_TXTATR_CONTENTCONTROL, 
sw::GetTextAttrMode::Default);
+        if (pAttr && pAttr->GetStart() == nPos)
+        {
+            bSkipRedline = true;
+        }
+    }
+
+    if (!bSkipRedline)
+    {
+        StartRedline(m_pRedlineData, bLastRun);
+    }
 
     // XML_r node should be surrounded with bookmark-begin and bookmark-end 
nodes if it has bookmarks.
     // The same is applied for permission ranges.
@@ -2042,6 +2057,13 @@ void DocxAttributeOutput::EndRun(const SwTextNode* 
pNode, sal_Int32 nPos, sal_In
     // append the actual run end
     m_pSerializer->endElementNS( XML_w, XML_r );
 
+    // if there is some redlining in the document, output it
+    // (except in the case of fields with multiple runs)
+    if (!bSkipRedline)
+    {
+        EndRedline(m_pRedlineData, bLastRun);
+    }
+
     if (nLen != -1)
     {
         sal_Int32 nEnd = nPos + nLen;
@@ -2052,10 +2074,6 @@ void DocxAttributeOutput::EndRun(const SwTextNode* 
pNode, sal_Int32 nPos, sal_In
         }
     }
 
-    // if there is some redlining in the document, output it
-    // (except in the case of fields with multiple runs)
-    EndRedline( m_pRedlineData, bLastRun );
-
     // enclose in a sdt block, if necessary: if one is already started, then 
don't do it for now
     // (so on export sdt blocks are never nested ATM)
     if ( !m_bAnchorLinkedToNode && !m_aRunSdt.m_bStartedSdt)
diff --git a/sw/source/filter/ww8/wrtw8nds.cxx 
b/sw/source/filter/ww8/wrtw8nds.cxx
index 39e2f885230b..68437c9529b3 100644
--- a/sw/source/filter/ww8/wrtw8nds.cxx
+++ b/sw/source/filter/ww8/wrtw8nds.cxx
@@ -2478,6 +2478,14 @@ void MSWordExportBase::OutputTextNode( SwTextNode& rNode 
)
             bool bStartedPostponedRunProperties = false;
             OUString aSavedSnippet ;
 
+            // Don't redline content-controls--Word doesn't do them.
+            SwTextAttr* pAttr = rNode.GetTextAttrAt(nCurrentPos, 
RES_TXTATR_CONTENTCONTROL,
+                                                    
sw::GetTextAttrMode::Default);
+            if (pAttr && pAttr->GetStart() == nCurrentPos)
+            {
+                pRedlineData = nullptr;
+            }
+
             sal_Int32 nNextAttr = GetNextPos( &aAttrIter, rNode, nCurrentPos );
 
             // Skip un-exportable attributes.
diff --git a/writerfilter/source/dmapper/DomainMapper_Impl.cxx 
b/writerfilter/source/dmapper/DomainMapper_Impl.cxx
index 4ee9f58f3e4c..7a009d71aee8 100644
--- a/writerfilter/source/dmapper/DomainMapper_Impl.cxx
+++ b/writerfilter/source/dmapper/DomainMapper_Impl.cxx
@@ -1033,7 +1033,40 @@ void DomainMapper_Impl::PopSdt()
     uno::Reference<text::XTextRange> xStart = aPosition.m_xTextRange;
     uno::Reference<text::XTextRange> xEnd = GetTopTextAppend()->getEnd();
     uno::Reference<text::XText> xText = xEnd->getText();
-    uno::Reference<text::XTextCursor> xCursor = 
xText->createTextCursorByRange(xStart);
+
+    uno::Reference<text::XTextCursor> xCursor;
+    try
+    {
+        xCursor = xText->createTextCursorByRange(xStart);
+    }
+    catch (const uno::RuntimeException&)
+    {
+        // We redline form controls and that gets us confused when
+        // we process the SDT around the placeholder. What seems to
+        // happen is we lose the text-range when we pop the SDT position.
+        // Here, we reset the text-range when we fail to create the
+        // cursor from the top SDT position.
+        if (m_aTextAppendStack.empty())
+        {
+            return;
+        }
+
+        uno::Reference<text::XTextAppend> xTextAppend = 
m_aTextAppendStack.top().xTextAppend;
+        if (!xTextAppend.is())
+        {
+            return;
+        }
+
+        uno::Reference<text::XText> xText2 = xTextAppend->getText();
+        if (!xText2.is())
+        {
+            return;
+        }
+
+        // Reset to the start.
+        xCursor = xText2->createTextCursorByRange(xTextAppend->getStart());
+    }
+
     if (!xCursor)
     {
         SAL_WARN("writerfilter.dmapper", "DomainMapper_Impl::PopSdt: no start 
position");

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