writerfilter/qa/cppunittests/dmapper/DomainMapper_Impl.cxx        |    9 
+++++++++
 writerfilter/qa/cppunittests/dmapper/data/field-if-inside-if.docx |binary
 writerfilter/source/dmapper/DomainMapper_Impl.cxx                 |   10 
+++++++++-
 3 files changed, 18 insertions(+), 1 deletion(-)

New commits:
commit 65d6173152deab49f9c9ed138f6d9fa56008b800
Author:     Miklos Vajna <vmik...@collabora.com>
AuthorDate: Fri Nov 13 09:45:47 2020 +0100
Commit:     Miklos Vajna <vmik...@collabora.com>
CommitDate: Fri Nov 13 14:54:36 2020 +0100

    DOCX import: lost cached result of fields: fix leading whitespace
    
    " IF " and "IF " is the same, but "IFF " is something different.
    
    Change-Id: Ieb2d128d28ed3daa3df73128804bcc40dda9878d
    Reviewed-on: https://gerrit.libreoffice.org/c/core/+/105783
    Reviewed-by: Miklos Vajna <vmik...@collabora.com>
    Tested-by: Jenkins

diff --git a/writerfilter/qa/cppunittests/dmapper/DomainMapper_Impl.cxx 
b/writerfilter/qa/cppunittests/dmapper/DomainMapper_Impl.cxx
index c7df72b25703..77bd616f37d6 100644
--- a/writerfilter/qa/cppunittests/dmapper/DomainMapper_Impl.cxx
+++ b/writerfilter/qa/cppunittests/dmapper/DomainMapper_Impl.cxx
@@ -179,6 +179,15 @@ CPPUNIT_TEST_FIXTURE(Test, testFieldIfInsideIf)
     // - Actual  : 0** Expression is faulty **2
     // i.e. some of the inner fields escaped outside the outer field.
     CPPUNIT_ASSERT_EQUAL(OUString("2"), xCell->getString());
+
+    // Test the second cell: it contains "IF ", not the usual " IF ".
+    xCell.set(xTable->getCellByName("A2"), uno::UNO_QUERY);
+
+    // Without the accompanying fix in place, this test would have failed with:
+    // - Expected: 25
+    // - Actual  : 025
+    // i.e. some of the inner fields escaped outside the outer field.
+    CPPUNIT_ASSERT_EQUAL(OUString("25"), xCell->getString());
 }
 }
 
diff --git a/writerfilter/qa/cppunittests/dmapper/data/field-if-inside-if.docx 
b/writerfilter/qa/cppunittests/dmapper/data/field-if-inside-if.docx
index 93aaab52d497..65e238869b1b 100644
Binary files 
a/writerfilter/qa/cppunittests/dmapper/data/field-if-inside-if.docx and 
b/writerfilter/qa/cppunittests/dmapper/data/field-if-inside-if.docx differ
diff --git a/writerfilter/source/dmapper/DomainMapper_Impl.cxx 
b/writerfilter/source/dmapper/DomainMapper_Impl.cxx
index 0a7ae26d937e..d1d0309a6b83 100644
--- a/writerfilter/source/dmapper/DomainMapper_Impl.cxx
+++ b/writerfilter/source/dmapper/DomainMapper_Impl.cxx
@@ -206,7 +206,15 @@ static FieldContextPtr GetParentFieldContext(const 
std::deque<FieldContextPtr>&
 static bool IsFieldNestingAllowed(const FieldContextPtr& pOuter, const 
FieldContextPtr& pInner)
 {
     std::optional<FieldId> oOuterFieldId = pOuter->GetFieldId();
-    if (!oOuterFieldId && pOuter->GetCommand().startsWith(" IF "))
+    OUString aCommand = pOuter->GetCommand();
+
+    // Ignore leading space before the field name, but don't accept IFF when 
we check for IF.
+    if (!aCommand.isEmpty() && aCommand[0] == ' ')
+    {
+        aCommand = aCommand.subView(1);
+    }
+
+    if (!oOuterFieldId && aCommand.startsWith("IF "))
     {
         // This will be FIELD_IF once the command is closed.
         oOuterFieldId = FIELD_IF;
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