tdf#56408 Writer always breaks lines at text direction change

This change implements line breaking underflow for bidi portions.

Previously, Writer would always treat the start of a bidi portion as a
valid position to insert a line break. This caused incorrect line
breaking behavior in certain situations where LTR text is followed by
RTL text with no valid break position between, or vice-versa.

Now, Writer will correctly insert the break at the previous valid
position, rather than always breaking at the direction change.

Change-Id: If4627f4d65d2c44b65653c689ee00a2e0cb4456a
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/170154
Tested-by: Jenkins
Reviewed-by: Jonathan Clark <jonathan@libreoffice.org>

4 files changed, 421 insertions, 0 deletions

diff --git a/sw/qa/extras/layout/data/tdf56408-ltr.fodt b/sw/qa/extras/layout/data/tdf56408-ltr.fodt
new file mode 100644
index 000000000000..5ce76412c080
--- /dev/null
+++ b/sw/qa/extras/layout/data/tdf56408-ltr.fodt
@@ -0,0 +1,129 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<office:document xmlns:css3t="http://www.w3.org/TR/css3-text/" xmlns:grddl="http://www.w3.org/2003/g/data-view#" xmlns:xhtml="http://www.w3.org/1999/xhtml" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xforms="http://www.w3.org/2002/xforms" xmlns:dom="http://www.w3.org/2001/xml-events" xmlns:script="urn:oasis:names:tc:opendocument:xmlns:script:1.0" xmlns:form="urn:oasis:names:tc:opendocument:xmlns:form:1.0" xmlns:math="http://www.w3.org/1998/Math/MathML" xmlns:office="urn:oasis:names:tc:opendocument:xmlns:office:1.0" xmlns:ooo="http://openoffice.org/2004/office" xmlns:fo="urn:oasis:names:tc:opendocument:xmlns:xsl-fo-compatible:1.0" xmlns:config="urn:oasis:names:tc:opendocument:xmlns:config:1.0" xmlns:ooow="http://openoffice.org/2004/writer" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:drawooo="http://openoffice.org/2010/draw" xmlns:oooc="http://openoffice.org/2004/calc" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:calcext="urn:org:documentfoundation:names:experimental:calc:xmlns:calcext:1.0" xmlns:style="urn:oasis:names:tc:opendocument:xmlns:style:1.0" xmlns:text="urn:oasis:names:tc:opendocument:xmlns:text:1.0" xmlns:of="urn:oasis:names:tc:opendocument:xmlns:of:1.2" xmlns:tableooo="http://openoffice.org/2009/table" xmlns:draw="urn:oasis:names:tc:opendocument:xmlns:drawing:1.0" xmlns:dr3d="urn:oasis:names:tc:opendocument:xmlns:dr3d:1.0" xmlns:rpt="http://openoffice.org/2005/report" xmlns:formx="urn:openoffice:names:experimental:ooxml-odf-interop:xmlns:form:1.0" xmlns:svg="urn:oasis:names:tc:opendocument:xmlns:svg-compatible:1.0" xmlns:chart="urn:oasis:names:tc:opendocument:xmlns:chart:1.0" xmlns:officeooo="http://openoffice.org/2009/office" xmlns:table="urn:oasis:names:tc:opendocument:xmlns:table:1.0" xmlns:field="urn:openoffice:names:experimental:ooo-ms-interop:xmlns:field:1.0" xmlns:number="urn:oasis:names:tc:opendocument:xmlns:datastyle:1.0" xmlns:meta="urn:oasis:names:tc:opendocument:xmlns:meta:1.0" xmlns:loext="urn:org:documentfoundation:names:experimental:office:xmlns:loext:1.0" office:version="1.3" office:mimetype="application/vnd.oasis.opendocument.text">
+ <office:meta><meta:initial-creator>Lior Kaplan</meta:initial-creator><meta:creation-date>2012-10-25T19:53:27</meta:creation-date><dc:date>2024-07-08T03:20:20.348137955</dc:date><meta:editing-duration>PT8M18S</meta:editing-duration><meta:editing-cycles>11</meta:editing-cycles><meta:generator>LibreOfficeDev/25.2.0.0.alpha0$Linux_X86_64 LibreOffice_project/9452bf222f57094e3bb100c6b0b9655d9f327737</meta:generator><meta:document-statistic meta:table-count="0" meta:image-count="0" meta:object-count="0" meta:page-count="1" meta:paragraph-count="1" meta:word-count="5" meta:character-count="45" meta:non-whitespace-character-count="41"/></office:meta>
+ <office:font-face-decls>
+  <style:font-face style:name="DejaVu Sans" svg:font-family="'DejaVu Sans'" style:font-family-generic="system" style:font-pitch="variable"/>
+  <style:font-face style:name="FreeSans" svg:font-family="FreeSans" style:font-family-generic="swiss"/>
+  <style:font-face style:name="Liberation Serif" svg:font-family="'Liberation Serif'" style:font-family-generic="roman" style:font-pitch="variable"/>
+  <style:font-face style:name="Noto Sans" svg:font-family="'Noto Sans'" style:font-family-generic="swiss" style:font-pitch="variable"/>
+  <style:font-face style:name="Noto Sans Hebrew" svg:font-family="'Noto Sans Hebrew'" style:font-family-generic="swiss" style:font-pitch="variable"/>
+ </office:font-face-decls>
+ <office:styles>
+  <style:default-style style:family="graphic">
+   <style:graphic-properties svg:stroke-color="#808080" draw:fill-color="#cfe7f5" fo:wrap-option="no-wrap" draw:shadow-offset-x="8.5pt" draw:shadow-offset-y="8.5pt" draw:start-line-spacing-horizontal="8.02pt" draw:start-line-spacing-vertical="8.02pt" draw:end-line-spacing-horizontal="8.02pt" draw:end-line-spacing-vertical="8.02pt" style:writing-mode="lr-tb" style:flow-with-text="false"/>
+   <style:paragraph-properties style:text-autospace="ideograph-alpha" style:line-break="strict" loext:tab-stop-distance="0pt" style:font-independent-line-spacing="false">
+    <style:tab-stops/>
+   </style:paragraph-properties>
+   <style:text-properties style:use-window-font-color="true" loext:opacity="0%" style:font-name="Liberation Serif" fo:font-size="12pt" fo:language="en" fo:country="US" style:letter-kerning="true" style:font-name-asian="DejaVu Sans" style:font-size-asian="10.5pt" style:language-asian="zh" style:country-asian="CN" style:font-name-complex="FreeSans" style:font-size-complex="12pt" style:language-complex="he" style:country-complex="IL"/>
+  </style:default-style>
+  <style:default-style style:family="paragraph">
+   <style:paragraph-properties fo:hyphenation-ladder-count="no-limit" fo:hyphenation-keep="auto" loext:hyphenation-keep-type="column" style:text-autospace="ideograph-alpha" style:punctuation-wrap="hanging" style:line-break="strict" style:tab-stop-distance="35.46pt" style:writing-mode="page"/>
+   <style:text-properties style:use-window-font-color="true" loext:opacity="0%" style:font-name="Liberation Serif" fo:font-size="12pt" fo:language="en" fo:country="US" style:letter-kerning="true" style:font-name-asian="DejaVu Sans" style:font-size-asian="10.5pt" style:language-asian="zh" style:country-asian="CN" style:font-name-complex="FreeSans" style:font-size-complex="12pt" style:language-complex="he" style:country-complex="IL" fo:hyphenate="false" fo:hyphenation-remain-char-count="2" fo:hyphenation-push-char-count="2" loext:hyphenation-no-caps="false" loext:hyphenation-no-last-word="false" loext:hyphenation-word-char-count="no-limit" loext:hyphenation-zone="no-limit"/>
+  </style:default-style>
+  <style:default-style style:family="table">
+   <style:table-properties table:border-model="collapsing"/>
+  </style:default-style>
+  <style:default-style style:family="table-row">
+   <style:table-row-properties fo:keep-together="auto"/>
+  </style:default-style>
+  <style:style style:name="Standard" style:family="paragraph" style:class="text"/>
+  <text:outline-style style:name="Outline">
+   <text:outline-level-style text:level="1" loext:num-list-format="%1%" style:num-format="">
+    <style:list-level-properties text:list-level-position-and-space-mode="label-alignment">
+     <style:list-level-label-alignment text:label-followed-by="listtab" text:list-tab-stop-position="21.6pt" fo:text-indent="-21.6pt" fo:margin-left="21.6pt"/>
+    </style:list-level-properties>
+   </text:outline-level-style>
+   <text:outline-level-style text:level="2" loext:num-list-format="%2%" style:num-format="">
+    <style:list-level-properties text:list-level-position-and-space-mode="label-alignment">
+     <style:list-level-label-alignment text:label-followed-by="listtab" text:list-tab-stop-position="28.8pt" fo:text-indent="-28.8pt" fo:margin-left="28.8pt"/>
+    </style:list-level-properties>
+   </text:outline-level-style>
+   <text:outline-level-style text:level="3" loext:num-list-format="%3%" style:num-format="">
+    <style:list-level-properties text:list-level-position-and-space-mode="label-alignment">
+     <style:list-level-label-alignment text:label-followed-by="listtab" text:list-tab-stop-position="36pt" fo:text-indent="-36pt" fo:margin-left="36pt"/>
+    </style:list-level-properties>
+   </text:outline-level-style>
+   <text:outline-level-style text:level="4" loext:num-list-format="%4%" style:num-format="">
+    <style:list-level-properties text:list-level-position-and-space-mode="label-alignment">
+     <style:list-level-label-alignment text:label-followed-by="listtab" text:list-tab-stop-position="43.2pt" fo:text-indent="-43.2pt" fo:margin-left="43.2pt"/>
+    </style:list-level-properties>
+   </text:outline-level-style>
+   <text:outline-level-style text:level="5" loext:num-list-format="%5%" style:num-format="">
+    <style:list-level-properties text:list-level-position-and-space-mode="label-alignment">
+     <style:list-level-label-alignment text:label-followed-by="listtab" text:list-tab-stop-position="50.4pt" fo:text-indent="-50.4pt" fo:margin-left="50.4pt"/>
+    </style:list-level-properties>
+   </text:outline-level-style>
+   <text:outline-level-style text:level="6" loext:num-list-format="%6%" style:num-format="">
+    <style:list-level-properties text:list-level-position-and-space-mode="label-alignment">
+     <style:list-level-label-alignment text:label-followed-by="listtab" text:list-tab-stop-position="57.6pt" fo:text-indent="-57.6pt" fo:margin-left="57.6pt"/>
+    </style:list-level-properties>
+   </text:outline-level-style>
+   <text:outline-level-style text:level="7" loext:num-list-format="%7%" style:num-format="">
+    <style:list-level-properties text:list-level-position-and-space-mode="label-alignment">
+     <style:list-level-label-alignment text:label-followed-by="listtab" text:list-tab-stop-position="64.8pt" fo:text-indent="-64.8pt" fo:margin-left="64.8pt"/>
+    </style:list-level-properties>
+   </text:outline-level-style>
+   <text:outline-level-style text:level="8" loext:num-list-format="%8%" style:num-format="">
+    <style:list-level-properties text:list-level-position-and-space-mode="label-alignment">
+     <style:list-level-label-alignment text:label-followed-by="listtab" text:list-tab-stop-position="72pt" fo:text-indent="-72pt" fo:margin-left="72pt"/>
+    </style:list-level-properties>
+   </text:outline-level-style>
+   <text:outline-level-style text:level="9" loext:num-list-format="%9%" style:num-format="">
+    <style:list-level-properties text:list-level-position-and-space-mode="label-alignment">
+     <style:list-level-label-alignment text:label-followed-by="listtab" text:list-tab-stop-position="79.2pt" fo:text-indent="-79.2pt" fo:margin-left="79.2pt"/>
+    </style:list-level-properties>
+   </text:outline-level-style>
+   <text:outline-level-style text:level="10" loext:num-list-format="%10%" style:num-format="">
+    <style:list-level-properties text:list-level-position-and-space-mode="label-alignment">
+     <style:list-level-label-alignment text:label-followed-by="listtab" text:list-tab-stop-position="86.4pt" fo:text-indent="-86.4pt" fo:margin-left="86.4pt"/>
+    </style:list-level-properties>
+   </text:outline-level-style>
+  </text:outline-style>
+  <text:notes-configuration text:note-class="footnote" style:num-format="1" text:start-value="0" text:footnotes-position="page" text:start-numbering-at="document"/>
+  <text:notes-configuration text:note-class="endnote" style:num-format="i" text:start-value="0"/>
+  <text:linenumbering-configuration text:number-lines="false" text:offset="14.14pt" style:num-format="1" text:number-position="left" text:increment="5"/>
+  </office:styles>
+ <office:automatic-styles>
+  <style:style style:name="P1" style:family="paragraph" style:parent-style-name="Standard">
+   <style:paragraph-properties fo:text-align="start" style:justify-single-word="false" style:writing-mode="lr-tb"/>
+   <style:text-properties style:font-name="Noto Sans" fo:font-size="36pt" style:font-size-asian="36pt" style:font-name-complex="Noto Sans" style:font-size-complex="36pt"/>
+  </style:style>
+  <style:style style:name="T1" style:family="text">
+   <style:text-properties/>
+  </style:style>
+  <style:style style:name="T2" style:family="text">
+   <style:text-properties fo:color="#ff0000" loext:opacity="100%"/>
+  </style:style>
+  <style:style style:name="T3" style:family="text">
+   <style:text-properties/>
+  </style:style>
+  <style:style style:name="T4" style:family="text">
+   <style:text-properties fo:color="#c9211e" loext:opacity="100%" fo:font-weight="normal" style:font-weight-asian="normal" style:font-name-complex="Noto Sans Hebrew" style:font-weight-complex="normal"/>
+  </style:style>
+  <style:page-layout style:name="pm1" style:page-usage="mirrored">
+   <style:page-layout-properties fo:page-width="595.3pt" fo:page-height="841.89pt" style:num-format="1" style:print-orientation="portrait" fo:margin-top="56.69pt" fo:margin-bottom="56.69pt" fo:margin-left="56.69pt" fo:margin-right="56.69pt" style:writing-mode="lr-tb" style:layout-grid-color="#c0c0c0" style:layout-grid-lines="20" style:layout-grid-base-height="20.01pt" style:layout-grid-ruby-height="10.01pt" style:layout-grid-mode="none" style:layout-grid-ruby-below="false" style:layout-grid-print="false" style:layout-grid-display="false" style:footnote-max-height="0pt" loext:margin-gutter="0pt">
+    <style:footnote-sep style:width="0.51pt" style:distance-before-sep="2.86pt" style:distance-after-sep="2.86pt" style:line-style="solid" style:adjustment="left" style:rel-width="25%" style:color="#000000"/>
+   </style:page-layout-properties>
+   <style:header-style/>
+   <style:footer-style/>
+  </style:page-layout>
+  <style:style style:name="dp1" style:family="drawing-page">
+   <style:drawing-page-properties draw:background-size="full"/>
+  </style:style>
+ </office:automatic-styles>
+ <office:master-styles>
+  <style:master-page style:name="Standard" style:page-layout-name="pm1" draw:style-name="dp1"/>
+ </office:master-styles>
+ <office:body>
+  <office:text>
+   <text:sequence-decls>
+    <text:sequence-decl text:display-outline-level="0" text:name="Illustration"/>
+    <text:sequence-decl text:display-outline-level="0" text:name="Table"/>
+    <text:sequence-decl text:display-outline-level="0" text:name="Text"/>
+    <text:sequence-decl text:display-outline-level="0" text:name="Drawing"/>
+    <text:sequence-decl text:display-outline-level="0" text:name="Figure"/>
+   </text:sequence-decls>
+   <text:p text:style-name="P1"><text:span text:style-name="T1">English English English</text:span> <text:span text:style-name="T1">(</text:span><text:span text:style-name="T2">((</text:span><text:span text:style-name="T3">(</text:span><text:span text:style-name="T4">עברית</text:span><text:span text:style-name="T3">)</text:span><text:span text:style-name="T2">))</text:span><text:span text:style-name="T1">)</text:span> <text:span text:style-name="T1">English</text:span></text:p>
+  </office:text>
+ </office:body>
+</office:document>
\ No newline at end of file
diff --git a/sw/qa/extras/layout/data/tdf56408-no-underflow.fodt b/sw/qa/extras/layout/data/tdf56408-no-underflow.fodt
new file mode 100644
index 000000000000..7ef7ebf605d5
--- /dev/null
+++ b/sw/qa/extras/layout/data/tdf56408-no-underflow.fodt
@@ -0,0 +1,123 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<office:document xmlns:css3t="http://www.w3.org/TR/css3-text/" xmlns:grddl="http://www.w3.org/2003/g/data-view#" xmlns:xhtml="http://www.w3.org/1999/xhtml" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xforms="http://www.w3.org/2002/xforms" xmlns:dom="http://www.w3.org/2001/xml-events" xmlns:script="urn:oasis:names:tc:opendocument:xmlns:script:1.0" xmlns:form="urn:oasis:names:tc:opendocument:xmlns:form:1.0" xmlns:math="http://www.w3.org/1998/Math/MathML" xmlns:office="urn:oasis:names:tc:opendocument:xmlns:office:1.0" xmlns:ooo="http://openoffice.org/2004/office" xmlns:fo="urn:oasis:names:tc:opendocument:xmlns:xsl-fo-compatible:1.0" xmlns:config="urn:oasis:names:tc:opendocument:xmlns:config:1.0" xmlns:ooow="http://openoffice.org/2004/writer" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:drawooo="http://openoffice.org/2010/draw" xmlns:oooc="http://openoffice.org/2004/calc" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:calcext="urn:org:documentfoundation:names:experimental:calc:xmlns:calcext:1.0" xmlns:style="urn:oasis:names:tc:opendocument:xmlns:style:1.0" xmlns:text="urn:oasis:names:tc:opendocument:xmlns:text:1.0" xmlns:of="urn:oasis:names:tc:opendocument:xmlns:of:1.2" xmlns:tableooo="http://openoffice.org/2009/table" xmlns:draw="urn:oasis:names:tc:opendocument:xmlns:drawing:1.0" xmlns:dr3d="urn:oasis:names:tc:opendocument:xmlns:dr3d:1.0" xmlns:rpt="http://openoffice.org/2005/report" xmlns:formx="urn:openoffice:names:experimental:ooxml-odf-interop:xmlns:form:1.0" xmlns:svg="urn:oasis:names:tc:opendocument:xmlns:svg-compatible:1.0" xmlns:chart="urn:oasis:names:tc:opendocument:xmlns:chart:1.0" xmlns:officeooo="http://openoffice.org/2009/office" xmlns:table="urn:oasis:names:tc:opendocument:xmlns:table:1.0" xmlns:field="urn:openoffice:names:experimental:ooo-ms-interop:xmlns:field:1.0" xmlns:number="urn:oasis:names:tc:opendocument:xmlns:datastyle:1.0" xmlns:meta="urn:oasis:names:tc:opendocument:xmlns:meta:1.0" xmlns:loext="urn:org:documentfoundation:names:experimental:office:xmlns:loext:1.0" office:version="1.3" office:mimetype="application/vnd.oasis.opendocument.text">
+ <office:meta><meta:initial-creator>Lior Kaplan</meta:initial-creator><meta:creation-date>2012-10-25T19:53:27</meta:creation-date><dc:date>2024-07-08T03:21:06.304537073</dc:date><meta:editing-duration>PT8M42S</meta:editing-duration><meta:editing-cycles>11</meta:editing-cycles><meta:generator>LibreOfficeDev/25.2.0.0.alpha0$Linux_X86_64 LibreOffice_project/9452bf222f57094e3bb100c6b0b9655d9f327737</meta:generator><meta:document-statistic meta:table-count="0" meta:image-count="0" meta:object-count="0" meta:page-count="1" meta:paragraph-count="1" meta:word-count="5" meta:character-count="37" meta:non-whitespace-character-count="33"/></office:meta>
+ <office:font-face-decls>
+  <style:font-face style:name="DejaVu Sans" svg:font-family="'DejaVu Sans'" style:font-family-generic="system" style:font-pitch="variable"/>
+  <style:font-face style:name="FreeSans" svg:font-family="FreeSans" style:font-family-generic="swiss"/>
+  <style:font-face style:name="Liberation Serif" svg:font-family="'Liberation Serif'" style:font-family-generic="roman" style:font-pitch="variable"/>
+  <style:font-face style:name="Noto Sans" svg:font-family="'Noto Sans'" style:font-adornments="Bold" style:font-family-generic="swiss" style:font-pitch="variable"/>
+  <style:font-face style:name="Noto Sans Hebrew" svg:font-family="'Noto Sans Hebrew'" style:font-adornments="Bold" style:font-family-generic="swiss" style:font-pitch="variable"/>
+ </office:font-face-decls>
+ <office:styles>
+  <style:default-style style:family="graphic">
+   <style:graphic-properties svg:stroke-color="#808080" draw:fill-color="#cfe7f5" fo:wrap-option="no-wrap" draw:shadow-offset-x="8.5pt" draw:shadow-offset-y="8.5pt" draw:start-line-spacing-horizontal="8.02pt" draw:start-line-spacing-vertical="8.02pt" draw:end-line-spacing-horizontal="8.02pt" draw:end-line-spacing-vertical="8.02pt" style:writing-mode="lr-tb" style:flow-with-text="false"/>
+   <style:paragraph-properties style:text-autospace="ideograph-alpha" style:line-break="strict" loext:tab-stop-distance="0pt" style:writing-mode="lr-tb" style:font-independent-line-spacing="false">
+    <style:tab-stops/>
+   </style:paragraph-properties>
+   <style:text-properties style:use-window-font-color="true" loext:opacity="0%" style:font-name="Liberation Serif" fo:font-size="12pt" fo:language="en" fo:country="US" style:letter-kerning="true" style:font-name-asian="DejaVu Sans" style:font-size-asian="10.5pt" style:language-asian="zh" style:country-asian="CN" style:font-name-complex="FreeSans" style:font-size-complex="12pt" style:language-complex="he" style:country-complex="IL"/>
+  </style:default-style>
+  <style:default-style style:family="paragraph">
+   <style:paragraph-properties fo:hyphenation-ladder-count="no-limit" fo:hyphenation-keep="auto" loext:hyphenation-keep-type="column" style:text-autospace="ideograph-alpha" style:punctuation-wrap="hanging" style:line-break="strict" style:tab-stop-distance="35.46pt" style:writing-mode="page"/>
+   <style:text-properties style:use-window-font-color="true" loext:opacity="0%" style:font-name="Liberation Serif" fo:font-size="12pt" fo:language="en" fo:country="US" style:letter-kerning="true" style:font-name-asian="DejaVu Sans" style:font-size-asian="10.5pt" style:language-asian="zh" style:country-asian="CN" style:font-name-complex="FreeSans" style:font-size-complex="12pt" style:language-complex="he" style:country-complex="IL" fo:hyphenate="false" fo:hyphenation-remain-char-count="2" fo:hyphenation-push-char-count="2" loext:hyphenation-no-caps="false" loext:hyphenation-no-last-word="false" loext:hyphenation-word-char-count="no-limit" loext:hyphenation-zone="no-limit"/>
+  </style:default-style>
+  <style:default-style style:family="table">
+   <style:table-properties table:border-model="collapsing"/>
+  </style:default-style>
+  <style:default-style style:family="table-row">
+   <style:table-row-properties fo:keep-together="auto"/>
+  </style:default-style>
+  <style:style style:name="Standard" style:family="paragraph" style:class="text"/>
+  <text:outline-style style:name="Outline">
+   <text:outline-level-style text:level="1" loext:num-list-format="%1%" style:num-format="">
+    <style:list-level-properties text:list-level-position-and-space-mode="label-alignment">
+     <style:list-level-label-alignment text:label-followed-by="listtab" text:list-tab-stop-position="21.6pt" fo:text-indent="-21.6pt" fo:margin-left="21.6pt"/>
+    </style:list-level-properties>
+   </text:outline-level-style>
+   <text:outline-level-style text:level="2" loext:num-list-format="%2%" style:num-format="">
+    <style:list-level-properties text:list-level-position-and-space-mode="label-alignment">
+     <style:list-level-label-alignment text:label-followed-by="listtab" text:list-tab-stop-position="28.8pt" fo:text-indent="-28.8pt" fo:margin-left="28.8pt"/>
+    </style:list-level-properties>
+   </text:outline-level-style>
+   <text:outline-level-style text:level="3" loext:num-list-format="%3%" style:num-format="">
+    <style:list-level-properties text:list-level-position-and-space-mode="label-alignment">
+     <style:list-level-label-alignment text:label-followed-by="listtab" text:list-tab-stop-position="36pt" fo:text-indent="-36pt" fo:margin-left="36pt"/>
+    </style:list-level-properties>
+   </text:outline-level-style>
+   <text:outline-level-style text:level="4" loext:num-list-format="%4%" style:num-format="">
+    <style:list-level-properties text:list-level-position-and-space-mode="label-alignment">
+     <style:list-level-label-alignment text:label-followed-by="listtab" text:list-tab-stop-position="43.2pt" fo:text-indent="-43.2pt" fo:margin-left="43.2pt"/>
+    </style:list-level-properties>
+   </text:outline-level-style>
+   <text:outline-level-style text:level="5" loext:num-list-format="%5%" style:num-format="">
+    <style:list-level-properties text:list-level-position-and-space-mode="label-alignment">
+     <style:list-level-label-alignment text:label-followed-by="listtab" text:list-tab-stop-position="50.4pt" fo:text-indent="-50.4pt" fo:margin-left="50.4pt"/>
+    </style:list-level-properties>
+   </text:outline-level-style>
+   <text:outline-level-style text:level="6" loext:num-list-format="%6%" style:num-format="">
+    <style:list-level-properties text:list-level-position-and-space-mode="label-alignment">
+     <style:list-level-label-alignment text:label-followed-by="listtab" text:list-tab-stop-position="57.6pt" fo:text-indent="-57.6pt" fo:margin-left="57.6pt"/>
+    </style:list-level-properties>
+   </text:outline-level-style>
+   <text:outline-level-style text:level="7" loext:num-list-format="%7%" style:num-format="">
+    <style:list-level-properties text:list-level-position-and-space-mode="label-alignment">
+     <style:list-level-label-alignment text:label-followed-by="listtab" text:list-tab-stop-position="64.8pt" fo:text-indent="-64.8pt" fo:margin-left="64.8pt"/>
+    </style:list-level-properties>
+   </text:outline-level-style>
+   <text:outline-level-style text:level="8" loext:num-list-format="%8%" style:num-format="">
+    <style:list-level-properties text:list-level-position-and-space-mode="label-alignment">
+     <style:list-level-label-alignment text:label-followed-by="listtab" text:list-tab-stop-position="72pt" fo:text-indent="-72pt" fo:margin-left="72pt"/>
+    </style:list-level-properties>
+   </text:outline-level-style>
+   <text:outline-level-style text:level="9" loext:num-list-format="%9%" style:num-format="">
+    <style:list-level-properties text:list-level-position-and-space-mode="label-alignment">
+     <style:list-level-label-alignment text:label-followed-by="listtab" text:list-tab-stop-position="79.2pt" fo:text-indent="-79.2pt" fo:margin-left="79.2pt"/>
+    </style:list-level-properties>
+   </text:outline-level-style>
+   <text:outline-level-style text:level="10" loext:num-list-format="%10%" style:num-format="">
+    <style:list-level-properties text:list-level-position-and-space-mode="label-alignment">
+     <style:list-level-label-alignment text:label-followed-by="listtab" text:list-tab-stop-position="86.4pt" fo:text-indent="-86.4pt" fo:margin-left="86.4pt"/>
+    </style:list-level-properties>
+   </text:outline-level-style>
+  </text:outline-style>
+  <text:notes-configuration text:note-class="footnote" style:num-format="1" text:start-value="0" text:footnotes-position="page" text:start-numbering-at="document"/>
+  <text:notes-configuration text:note-class="endnote" style:num-format="i" text:start-value="0"/>
+  <text:linenumbering-configuration text:number-lines="false" text:offset="14.14pt" style:num-format="1" text:number-position="left" text:increment="5"/>
+  </office:styles>
+ <office:automatic-styles>
+  <style:style style:name="P1" style:family="paragraph" style:parent-style-name="Standard">
+   <style:paragraph-properties style:writing-mode="lr-tb"/>
+   <style:text-properties style:font-name="Noto Sans" fo:font-size="36pt" style:font-size-asian="36pt" style:font-name-complex="Noto Sans" style:font-size-complex="36pt"/>
+  </style:style>
+  <style:style style:name="T1" style:family="text">
+   <style:text-properties/>
+  </style:style>
+  <style:style style:name="T2" style:family="text">
+   <style:text-properties style:font-name-complex="Noto Sans Hebrew"/>
+  </style:style>
+  <style:page-layout style:name="pm1" style:page-usage="mirrored">
+   <style:page-layout-properties fo:page-width="595.3pt" fo:page-height="841.89pt" style:num-format="1" style:print-orientation="portrait" fo:margin-top="56.69pt" fo:margin-bottom="56.69pt" fo:margin-left="56.69pt" fo:margin-right="56.69pt" style:writing-mode="lr-tb" style:layout-grid-color="#c0c0c0" style:layout-grid-lines="20" style:layout-grid-base-height="20.01pt" style:layout-grid-ruby-height="10.01pt" style:layout-grid-mode="none" style:layout-grid-ruby-below="false" style:layout-grid-print="false" style:layout-grid-display="false" style:footnote-max-height="0pt" loext:margin-gutter="0pt">
+    <style:footnote-sep style:width="0.51pt" style:distance-before-sep="2.86pt" style:distance-after-sep="2.86pt" style:line-style="solid" style:adjustment="left" style:rel-width="25%" style:color="#000000"/>
+   </style:page-layout-properties>
+   <style:header-style/>
+   <style:footer-style/>
+  </style:page-layout>
+  <style:style style:name="dp1" style:family="drawing-page">
+   <style:drawing-page-properties draw:background-size="full"/>
+  </style:style>
+ </office:automatic-styles>
+ <office:master-styles>
+  <style:master-page style:name="Standard" style:page-layout-name="pm1" draw:style-name="dp1"/>
+ </office:master-styles>
+ <office:body>
+  <office:text>
+   <text:sequence-decls>
+    <text:sequence-decl text:display-outline-level="0" text:name="Illustration"/>
+    <text:sequence-decl text:display-outline-level="0" text:name="Table"/>
+    <text:sequence-decl text:display-outline-level="0" text:name="Text"/>
+    <text:sequence-decl text:display-outline-level="0" text:name="Drawing"/>
+    <text:sequence-decl text:display-outline-level="0" text:name="Figure"/>
+   </text:sequence-decls>
+   <text:p text:style-name="P1">English English Englis<text:span text:style-name="T1">h</text:span> <text:span text:style-name="T2">עברית</text:span> English</text:p>
+  </office:text>
+ </office:body>
+</office:document>
\ No newline at end of file
diff --git a/sw/qa/extras/layout/data/tdf56408-rtl.fodt b/sw/qa/extras/layout/data/tdf56408-rtl.fodt
new file mode 100644
index 000000000000..e68774befc5f
--- /dev/null
+++ b/sw/qa/extras/layout/data/tdf56408-rtl.fodt
@@ -0,0 +1,125 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<office:document xmlns:css3t="http://www.w3.org/TR/css3-text/" xmlns:grddl="http://www.w3.org/2003/g/data-view#" xmlns:xhtml="http://www.w3.org/1999/xhtml" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xforms="http://www.w3.org/2002/xforms" xmlns:dom="http://www.w3.org/2001/xml-events" xmlns:script="urn:oasis:names:tc:opendocument:xmlns:script:1.0" xmlns:form="urn:oasis:names:tc:opendocument:xmlns:form:1.0" xmlns:math="http://www.w3.org/1998/Math/MathML" xmlns:office="urn:oasis:names:tc:opendocument:xmlns:office:1.0" xmlns:ooo="http://openoffice.org/2004/office" xmlns:fo="urn:oasis:names:tc:opendocument:xmlns:xsl-fo-compatible:1.0" xmlns:config="urn:oasis:names:tc:opendocument:xmlns:config:1.0" xmlns:ooow="http://openoffice.org/2004/writer" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:drawooo="http://openoffice.org/2010/draw" xmlns:oooc="http://openoffice.org/2004/calc" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:calcext="urn:org:documentfoundation:names:experimental:calc:xmlns:calcext:1.0" xmlns:style="urn:oasis:names:tc:opendocument:xmlns:style:1.0" xmlns:text="urn:oasis:names:tc:opendocument:xmlns:text:1.0" xmlns:of="urn:oasis:names:tc:opendocument:xmlns:of:1.2" xmlns:tableooo="http://openoffice.org/2009/table" xmlns:draw="urn:oasis:names:tc:opendocument:xmlns:drawing:1.0" xmlns:dr3d="urn:oasis:names:tc:opendocument:xmlns:dr3d:1.0" xmlns:rpt="http://openoffice.org/2005/report" xmlns:formx="urn:openoffice:names:experimental:ooxml-odf-interop:xmlns:form:1.0" xmlns:svg="urn:oasis:names:tc:opendocument:xmlns:svg-compatible:1.0" xmlns:chart="urn:oasis:names:tc:opendocument:xmlns:chart:1.0" xmlns:officeooo="http://openoffice.org/2009/office" xmlns:table="urn:oasis:names:tc:opendocument:xmlns:table:1.0" xmlns:field="urn:openoffice:names:experimental:ooo-ms-interop:xmlns:field:1.0" xmlns:number="urn:oasis:names:tc:opendocument:xmlns:datastyle:1.0" xmlns:meta="urn:oasis:names:tc:opendocument:xmlns:meta:1.0" xmlns:loext="urn:org:documentfoundation:names:experimental:office:xmlns:loext:1.0" office:version="1.3" office:mimetype="application/vnd.oasis.opendocument.text">
+ <office:meta><meta:initial-creator>Lior Kaplan</meta:initial-creator><meta:creation-date>2012-10-25T19:53:27</meta:creation-date><dc:date>2024-07-08T03:38:49.126947456</dc:date><meta:editing-duration>PT11M10S</meta:editing-duration><meta:editing-cycles>13</meta:editing-cycles><meta:generator>LibreOffice/24.2.4.2$Linux_X86_64 LibreOffice_project/d29029bfb700ea4a272da1366c5f5e7c14e351b5</meta:generator><meta:document-statistic meta:table-count="0" meta:image-count="0" meta:object-count="0" meta:page-count="1" meta:paragraph-count="1" meta:word-count="5" meta:character-count="39" meta:non-whitespace-character-count="35"/></office:meta>
+ <office:font-face-decls>
+  <style:font-face style:name="DejaVu Sans" svg:font-family="'DejaVu Sans'" style:font-family-generic="system" style:font-pitch="variable"/>
+  <style:font-face style:name="FreeSans" svg:font-family="FreeSans" style:font-family-generic="swiss"/>
+  <style:font-face style:name="Liberation Serif" svg:font-family="'Liberation Serif'" style:font-family-generic="roman" style:font-pitch="variable"/>
+  <style:font-face style:name="Noto Sans Hebrew" svg:font-family="'Noto Sans Hebrew'" style:font-family-generic="swiss" style:font-pitch="variable"/>
+ </office:font-face-decls>
+ <office:styles>
+  <style:default-style style:family="graphic">
+   <style:graphic-properties svg:stroke-color="#808080" draw:fill-color="#cfe7f5" fo:wrap-option="no-wrap" draw:shadow-offset-x="0.1181in" draw:shadow-offset-y="0.1181in" draw:start-line-spacing-horizontal="0.1114in" draw:start-line-spacing-vertical="0.1114in" draw:end-line-spacing-horizontal="0.1114in" draw:end-line-spacing-vertical="0.1114in" style:writing-mode="lr-tb" style:flow-with-text="false"/>
+   <style:paragraph-properties style:text-autospace="ideograph-alpha" style:line-break="strict" loext:tab-stop-distance="0in" style:writing-mode="lr-tb" style:font-independent-line-spacing="false">
+    <style:tab-stops/>
+   </style:paragraph-properties>
+   <style:text-properties style:use-window-font-color="true" loext:opacity="0%" style:font-name="Liberation Serif" fo:font-size="12pt" fo:language="en" fo:country="US" style:letter-kerning="true" style:font-name-asian="DejaVu Sans" style:font-size-asian="10.5pt" style:language-asian="zh" style:country-asian="CN" style:font-name-complex="FreeSans" style:font-size-complex="12pt" style:language-complex="he" style:country-complex="IL"/>
+  </style:default-style>
+  <style:default-style style:family="paragraph">
+   <style:paragraph-properties fo:hyphenation-ladder-count="no-limit" style:text-autospace="ideograph-alpha" style:punctuation-wrap="hanging" style:line-break="strict" style:tab-stop-distance="0.4925in" style:writing-mode="page"/>
+   <style:text-properties style:use-window-font-color="true" loext:opacity="0%" style:font-name="Liberation Serif" fo:font-size="12pt" fo:language="en" fo:country="US" style:letter-kerning="true" style:font-name-asian="DejaVu Sans" style:font-size-asian="10.5pt" style:language-asian="zh" style:country-asian="CN" style:font-name-complex="FreeSans" style:font-size-complex="12pt" style:language-complex="he" style:country-complex="IL" fo:hyphenate="false" fo:hyphenation-remain-char-count="2" fo:hyphenation-push-char-count="2" loext:hyphenation-no-caps="false" loext:hyphenation-no-last-word="false" loext:hyphenation-word-char-count="no-limit" loext:hyphenation-zone="no-limit"/>
+  </style:default-style>
+  <style:default-style style:family="table">
+   <style:table-properties table:border-model="collapsing"/>
+  </style:default-style>
+  <style:default-style style:family="table-row">
+   <style:table-row-properties fo:keep-together="auto"/>
+  </style:default-style>
+  <style:style style:name="Standard" style:family="paragraph" style:class="text"/>
+  <text:outline-style style:name="Outline">
+   <text:outline-level-style text:level="1" loext:num-list-format="%1%" style:num-format="">
+    <style:list-level-properties text:list-level-position-and-space-mode="label-alignment">
+     <style:list-level-label-alignment text:label-followed-by="listtab" text:list-tab-stop-position="0.3in" fo:text-indent="-0.3in" fo:margin-left="0.3in"/>
+    </style:list-level-properties>
+   </text:outline-level-style>
+   <text:outline-level-style text:level="2" loext:num-list-format="%2%" style:num-format="">
+    <style:list-level-properties text:list-level-position-and-space-mode="label-alignment">
+     <style:list-level-label-alignment text:label-followed-by="listtab" text:list-tab-stop-position="0.4in" fo:text-indent="-0.4in" fo:margin-left="0.4in"/>
+    </style:list-level-properties>
+   </text:outline-level-style>
+   <text:outline-level-style text:level="3" loext:num-list-format="%3%" style:num-format="">
+    <style:list-level-properties text:list-level-position-and-space-mode="label-alignment">
+     <style:list-level-label-alignment text:label-followed-by="listtab" text:list-tab-stop-position="0.5in" fo:text-indent="-0.5in" fo:margin-left="0.5in"/>
+    </style:list-level-properties>
+   </text:outline-level-style>
+   <text:outline-level-style text:level="4" loext:num-list-format="%4%" style:num-format="">
+    <style:list-level-properties text:list-level-position-and-space-mode="label-alignment">
+     <style:list-level-label-alignment text:label-followed-by="listtab" text:list-tab-stop-position="0.6in" fo:text-indent="-0.6in" fo:margin-left="0.6in"/>
+    </style:list-level-properties>
+   </text:outline-level-style>
+   <text:outline-level-style text:level="5" loext:num-list-format="%5%" style:num-format="">
+    <style:list-level-properties text:list-level-position-and-space-mode="label-alignment">
+     <style:list-level-label-alignment text:label-followed-by="listtab" text:list-tab-stop-position="0.7in" fo:text-indent="-0.7in" fo:margin-left="0.7in"/>
+    </style:list-level-properties>
+   </text:outline-level-style>
+   <text:outline-level-style text:level="6" loext:num-list-format="%6%" style:num-format="">
+    <style:list-level-properties text:list-level-position-and-space-mode="label-alignment">
+     <style:list-level-label-alignment text:label-followed-by="listtab" text:list-tab-stop-position="0.8in" fo:text-indent="-0.8in" fo:margin-left="0.8in"/>
+    </style:list-level-properties>
+   </text:outline-level-style>
+   <text:outline-level-style text:level="7" loext:num-list-format="%7%" style:num-format="">
+    <style:list-level-properties text:list-level-position-and-space-mode="label-alignment">
+     <style:list-level-label-alignment text:label-followed-by="listtab" text:list-tab-stop-position="0.9in" fo:text-indent="-0.9in" fo:margin-left="0.9in"/>
+    </style:list-level-properties>
+   </text:outline-level-style>
+   <text:outline-level-style text:level="8" loext:num-list-format="%8%" style:num-format="">
+    <style:list-level-properties text:list-level-position-and-space-mode="label-alignment">
+     <style:list-level-label-alignment text:label-followed-by="listtab" text:list-tab-stop-position="1in" fo:text-indent="-1in" fo:margin-left="1in"/>
+    </style:list-level-properties>
+   </text:outline-level-style>
+   <text:outline-level-style text:level="9" loext:num-list-format="%9%" style:num-format="">
+    <style:list-level-properties text:list-level-position-and-space-mode="label-alignment">
+     <style:list-level-label-alignment text:label-followed-by="listtab" text:list-tab-stop-position="1.1in" fo:text-indent="-1.1in" fo:margin-left="1.1in"/>
+    </style:list-level-properties>
+   </text:outline-level-style>
+   <text:outline-level-style text:level="10" loext:num-list-format="%10%" style:num-format="">
+    <style:list-level-properties text:list-level-position-and-space-mode="label-alignment">
+     <style:list-level-label-alignment text:label-followed-by="listtab" text:list-tab-stop-position="1.2in" fo:text-indent="-1.2in" fo:margin-left="1.2in"/>
+    </style:list-level-properties>
+   </text:outline-level-style>
+  </text:outline-style>
+  <text:notes-configuration text:note-class="footnote" style:num-format="1" text:start-value="0" text:footnotes-position="page" text:start-numbering-at="document"/>
+  <text:notes-configuration text:note-class="endnote" style:num-format="i" text:start-value="0"/>
+  <text:linenumbering-configuration text:number-lines="false" text:offset="0.1965in" style:num-format="1" text:number-position="left" text:increment="5"/>
+  </office:styles>
+ <office:automatic-styles>
+  <style:style style:name="P1" style:family="paragraph" style:parent-style-name="Standard">
+   <style:paragraph-properties fo:text-align="end" style:justify-single-word="false" style:writing-mode="rl-tb"/>
+   <style:text-properties style:font-name="Noto Sans Hebrew" fo:font-size="36pt" style:font-size-asian="36pt" style:font-name-complex="Noto Sans Hebrew" style:font-size-complex="36pt"/>
+  </style:style>
+  <style:style style:name="T1" style:family="text">
+   <style:text-properties/>
+  </style:style>
+  <style:style style:name="T2" style:family="text">
+   <style:text-properties fo:color="#ff0000" loext:opacity="100%"/>
+  </style:style>
+  <style:style style:name="T3" style:family="text">
+   <style:text-properties fo:color="#bf0041" loext:opacity="100%"/>
+  </style:style>
+  <style:page-layout style:name="pm1" style:page-usage="mirrored">
+   <style:page-layout-properties fo:page-width="8.2681in" fo:page-height="11.6929in" style:num-format="1" style:print-orientation="portrait" fo:margin-top="0.7874in" fo:margin-bottom="0.7874in" fo:margin-left="0.7874in" fo:margin-right="0.7874in" style:writing-mode="lr-tb" style:layout-grid-color="#c0c0c0" style:layout-grid-lines="20" style:layout-grid-base-height="0.278in" style:layout-grid-ruby-height="0.139in" style:layout-grid-mode="none" style:layout-grid-ruby-below="false" style:layout-grid-print="false" style:layout-grid-display="false" style:footnote-max-height="0in" loext:margin-gutter="0in">
+    <style:footnote-sep style:width="0.0071in" style:distance-before-sep="0.0398in" style:distance-after-sep="0.0398in" style:line-style="solid" style:adjustment="left" style:rel-width="25%" style:color="#000000"/>
+   </style:page-layout-properties>
+   <style:header-style/>
+   <style:footer-style/>
+  </style:page-layout>
+  <style:style style:name="dp1" style:family="drawing-page">
+   <style:drawing-page-properties draw:background-size="full"/>
+  </style:style>
+ </office:automatic-styles>
+ <office:master-styles>
+  <style:master-page style:name="Standard" style:page-layout-name="pm1" draw:style-name="dp1"/>
+ </office:master-styles>
+ <office:body>
+  <office:text>
+   <text:sequence-decls>
+    <text:sequence-decl text:display-outline-level="0" text:name="Illustration"/>
+    <text:sequence-decl text:display-outline-level="0" text:name="Table"/>
+    <text:sequence-decl text:display-outline-level="0" text:name="Text"/>
+    <text:sequence-decl text:display-outline-level="0" text:name="Drawing"/>
+    <text:sequence-decl text:display-outline-level="0" text:name="Figure"/>
+   </text:sequence-decls>
+   <text:p text:style-name="P1">עברית עברית עברית <text:span text:style-name="T1">(</text:span><text:span text:style-name="T2">((</text:span><text:span text:style-name="T1">(</text:span><text:span text:style-name="T3">English</text:span><text:span text:style-name="T1">)</text:span><text:span text:style-name="T2">))</text:span><text:span text:style-name="T1">) עברית</text:span></text:p>
+  </office:text>
+ </office:body>
+</office:document>
\ No newline at end of file
diff --git a/sw/qa/extras/layout/layout3.cxx b/sw/qa/extras/layout/layout3.cxx
index 3ee4953e52cc..d10e0c78a2f7 100644
--- a/sw/qa/extras/layout/layout3.cxx
+++ b/sw/qa/extras/layout/layout3.cxx
@@ -3037,6 +3037,50 @@ CPPUNIT_TEST_FIXTURE(SwLayoutWriter3, TestTdf104209VertRTL)
                 "portion"_ostr, u"B"_ustr);
 }
 
+CPPUNIT_TEST_FIXTURE(SwLayoutWriter3, TestTdf56408LTR)
+{
+    // Verify that line breaking a first bidi portion correctly underflows in LTR text
+    createSwDoc("tdf56408-ltr.fodt");
+    auto pXmlDoc = parseLayoutDump();
+
+    assertXPath(pXmlDoc, "//page"_ostr, 1);
+
+    assertXPath(pXmlDoc, "/root/page/body/txt/SwParaPortion/SwLineLayout[1]"_ostr, "portion"_ostr,
+                u"English English English "_ustr);
+    assertXPath(pXmlDoc, "/root/page/body/txt/SwParaPortion/SwLineLayout[2]"_ostr, "portion"_ostr,
+                u"((((עברית)))) English"_ustr);
+}
+
+CPPUNIT_TEST_FIXTURE(SwLayoutWriter3, TestTdf56408RTL)
+{
+    // Verify that line breaking a first bidi portion correctly underflows in RTL text
+    createSwDoc("tdf56408-rtl.fodt");
+    auto pXmlDoc = parseLayoutDump();
+
+    assertXPath(pXmlDoc, "//page"_ostr, 1);
+
+    assertXPath(pXmlDoc, "/root/page/body/txt/SwParaPortion/SwLineLayout[1]"_ostr, "portion"_ostr,
+                u"עברית עברית עברית "_ustr);
+    assertXPath(pXmlDoc, "/root/page/body/txt/SwParaPortion/SwLineLayout[2]"_ostr, "portion"_ostr,
+                u"((((English)))) עברית"_ustr);
+}
+
+CPPUNIT_TEST_FIXTURE(SwLayoutWriter3, TestTdf56408NoUnderflow)
+{
+    // The fix for tdf#56408 introduced a change to line breaking between text with
+    // direction changes. This test verifies behavior in the trivial case, when a
+    // break opportunity exists at the direction change boundary.
+    createSwDoc("tdf56408-no-underflow.fodt");
+    auto pXmlDoc = parseLayoutDump();
+
+    assertXPath(pXmlDoc, "//page"_ostr, 1);
+
+    assertXPath(pXmlDoc, "/root/page/body/txt/SwParaPortion/SwLineLayout[1]"_ostr, "portion"_ostr,
+                u"English English English "_ustr);
+    assertXPath(pXmlDoc, "/root/page/body/txt/SwParaPortion/SwLineLayout[2]"_ostr, "portion"_ostr,
+                u"עברית English"_ustr);
+}
+
 } // end of anonymous namespace
 
 CPPUNIT_PLUGIN_IMPLEMENT();