i18npool: don't break line at slash '/'

If sw text formatting gets the result of the special-case code added to
the "word boundary break" condition, it may call again the next time
with the preceding index, and fall into the "Line boundary break"
condition, which hence also needs to special case '/'.

(regression from ICU 60, 9206a08ada00e8762c4a634f242bd566028964bb)

Change-Id: I2aaefbc7b25af157e0a6ef15fabaa71bff1e8d9a
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/99104
Tested-by: Jenkins
Reviewed-by: Michael Stahl <michael.stahl@cib.de>
(cherry picked from commit a916e2253df2bf1415c25fb7f974e0d16b615d03)
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/99059
Reviewed-by: Eike Rathke <erack@redhat.com>

3 files changed, 94 insertions, 1 deletions

diff --git a/i18npool/source/breakiterator/breakiterator_unicode.cxx b/i18npool/source/breakiterator/breakiterator_unicode.cxx
index 2d2ac437b430..7c79b99ec028 100644
--- a/i18npool/source/breakiterator/breakiterator_unicode.cxx
+++ b/i18npool/source/breakiterator/breakiterator_unicode.cxx
@@ -499,7 +499,10 @@ LineBreakResults SAL_CALL BreakIterator_Unicode::getLineBreak(
     icu::BreakIterator* pLineBI = line.mpValue->mpBreakIterator.get();
     bool GlueSpace=true;
     while (GlueSpace) {
-        if (pLineBI->preceding(nStartPos + 1) == nStartPos) { //Line boundary break
+        // don't break with Slash U+002F SOLIDUS at end of line; see "else" below!
+        if (pLineBI->preceding(nStartPos + 1) == nStartPos
+                && (nStartPos == 0 || Text[nStartPos - 1] != '/'))
+        { //Line boundary break
             lbr.breakIndex = nStartPos;
             lbr.breakType = BreakType::WORDBOUNDARY;
         } else if (hOptions.rHyphenator.is()) { //Hyphenation break
diff --git a/sw/qa/extras/layout/data/no-line-break-at-slash.fodt b/sw/qa/extras/layout/data/no-line-break-at-slash.fodt
new file mode 100644
index 000000000000..e900594fa0c8
--- /dev/null
+++ b/sw/qa/extras/layout/data/no-line-break-at-slash.fodt
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<office:document xmlns:officeooo="http://openoffice.org/2009/office" 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:chart="urn:oasis:names:tc:opendocument:xmlns:chart:1.0" xmlns:svg="urn:oasis:names:tc:opendocument:xmlns:svg-compatible:1.0" xmlns:draw="urn:oasis:names:tc:opendocument:xmlns:drawing:1.0" xmlns:rpt="http://openoffice.org/2005/report" xmlns:text="urn:oasis:names:tc:opendocument:xmlns:text:1.0" xmlns:style="urn:oasis:names:tc:opendocument:xmlns:style:1.0" xmlns:meta="urn:oasis:names:tc:opendocument:xmlns:meta:1.0" xmlns:config="urn:oasis:names:tc:opendocument:xmlns:config:1.0" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:fo="urn:oasis:names:tc:opendocument:xmlns:xsl-fo-compatible:1.0" xmlns:of="urn:oasis:names:tc:opendocument:xmlns:of:1.2" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:ooo="http://openoffice.org/2004/office" xmlns:dr3d="urn:oasis:names:tc:opendocument:xmlns:dr3d:1.0" xmlns:formx="urn:openoffice:names:experimental:ooxml-odf-interop:xmlns:form:1.0" xmlns:calcext="urn:org:documentfoundation:names:experimental:calc:xmlns:calcext:1.0" xmlns:drawooo="http://openoffice.org/2010/draw" xmlns:field="urn:openoffice:names:experimental:ooo-ms-interop:xmlns:field:1.0" xmlns:office="urn:oasis:names:tc:opendocument:xmlns:office:1.0" xmlns:table="urn:oasis:names:tc:opendocument:xmlns:table:1.0" xmlns:number="urn:oasis:names:tc:opendocument:xmlns:datastyle:1.0" xmlns:ooow="http://openoffice.org/2004/writer" xmlns:oooc="http://openoffice.org/2004/calc" xmlns:tableooo="http://openoffice.org/2009/table" xmlns:loext="urn:org:documentfoundation:names:experimental:office:xmlns:loext:1.0" xmlns:math="http://www.w3.org/1998/Math/MathML" xmlns:form="urn:oasis:names:tc:opendocument:xmlns:form:1.0" xmlns:script="urn:oasis:names:tc:opendocument:xmlns:script:1.0" xmlns:dom="http://www.w3.org/2001/xml-events" xmlns:xforms="http://www.w3.org/2002/xforms" office:version="1.2" office:mimetype="application/vnd.oasis.opendocument.text">
+ <office:font-face-decls>
+  <style:font-face style:name="Liberation Serif" svg:font-family="&apos;Liberation Serif&apos;" style:font-family-generic="roman" style:font-pitch="variable"/>
+  <style:font-face style:name="Lohit Devanagari" svg:font-family="&apos;Lohit Devanagari&apos;" style:font-family-generic="system" style:font-pitch="variable"/>
+  <style:font-face style:name="Source Han Serif CN" svg:font-family="&apos;Source Han Serif CN&apos;" style:font-family-generic="system" style:font-pitch="variable"/>
+ </office:font-face-decls>
+ <office:styles>
+  <style:default-style style:family="graphic">
+   <style:graphic-properties svg:stroke-color="#3465a4" draw:fill-color="#729fcf" fo:wrap-option="no-wrap" draw:shadow-offset-x="0.3cm" draw:shadow-offset-y="0.3cm" draw:start-line-spacing-horizontal="0.283cm" draw:start-line-spacing-vertical="0.283cm" draw:end-line-spacing-horizontal="0.283cm" draw:end-line-spacing-vertical="0.283cm" style:flow-with-text="false"/>
+   <style:paragraph-properties style:text-autospace="ideograph-alpha" style:line-break="strict" 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" style:font-name="Liberation Serif" fo:font-size="12pt" fo:language="de" fo:country="DE" style:letter-kerning="true" style:font-name-asian="Source Han Serif CN" style:font-size-asian="10.5pt" style:language-asian="zh" style:country-asian="CN" style:font-name-complex="Lohit Devanagari" style:font-size-complex="12pt" style:language-complex="hi" style:country-complex="IN"/>
+  </style:default-style>
+  <style:default-style style:family="paragraph">
+   <style:paragraph-properties fo:orphans="2" fo:widows="2" fo:hyphenation-ladder-count="no-limit" style:text-autospace="ideograph-alpha" style:punctuation-wrap="hanging" style:line-break="strict" style:tab-stop-distance="1.251cm" style:writing-mode="page"/>
+   <style:text-properties style:use-window-font-color="true" style:font-name="Liberation Serif" fo:font-size="12pt" fo:language="de" fo:country="DE" style:letter-kerning="true" style:font-name-asian="Source Han Serif CN" style:font-size-asian="10.5pt" style:language-asian="zh" style:country-asian="CN" style:font-name-complex="Lohit Devanagari" style:font-size-complex="12pt" style:language-complex="hi" style:country-complex="IN" fo:hyphenate="false" fo:hyphenation-remain-char-count="2" fo:hyphenation-push-char-count="2"/>
+  </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: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="0.499cm" style:num-format="1" text:number-position="left" text:increment="5"/>
+ </office:styles>
+ <office:automatic-styles>
+  <style:page-layout style:name="pm1">
+   <style:page-layout-properties fo:page-width="10.5cm" fo:page-height="14.801cm" style:num-format="1" style:print-orientation="portrait" fo:margin-top="2cm" fo:margin-bottom="2cm" fo:margin-left="2cm" fo:margin-right="2cm" style:writing-mode="lr-tb" style:footnote-max-height="0cm">
+    <style:footnote-sep style:width="0.018cm" style:distance-before-sep="0.101cm" style:distance-after-sep="0.101cm" 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>
+ </office:automatic-styles>
+ <office:master-styles>
+  <style:master-page style:name="Standard" style:page-layout-name="pm1"/>
+ </office:master-styles>
+ <office:body>
+  <office:text>
+   <office:forms form:automatic-focus="false" form:apply-design-mode="false"/>
+   <text:p text:style-name="Standard">Blah blah bla bla bla Foostrasse 13/c/2, etc.</text:p>
+  </office:text>
+ </office:body>
+</office:document>
diff --git a/sw/qa/extras/layout/layout.cxx b/sw/qa/extras/layout/layout.cxx
index 90a5feb7bc9a..d2fba4c8299e 100644
--- a/sw/qa/extras/layout/layout.cxx
+++ b/sw/qa/extras/layout/layout.cxx
@@ -1164,6 +1164,46 @@ CPPUNIT_TEST_FIXTURE(SwLayoutWriter, TestTdf134277)
                                  xmlXPathNodeSetGetLength(pXmlNodes));
 }
 
+CPPUNIT_TEST_FIXTURE(SwLayoutWriter, testNoLineBreakAtSlash)
+{
+    load(DATA_DIRECTORY, "no-line-break-at-slash.fodt");
+    xmlDocUniquePtr pLayout = parseLayoutDump();
+
+    // the line break was between  "Foostrasse 13/c/" and "2"
+    xmlXPathObjectPtr pXmlObj = getXPathNode(pLayout, "/root/page[1]/body/txt[1]/child::*[2]");
+    CPPUNIT_ASSERT_EQUAL(std::string("Text"), std::string(reinterpret_cast<char const*>(
+                                                  pXmlObj->nodesetval->nodeTab[0]->name)));
+    xmlXPathFreeObject(pXmlObj);
+    pXmlObj = getXPathNode(pLayout, "/root/page[1]/body/txt[1]/child::*[3]");
+    CPPUNIT_ASSERT_EQUAL(std::string("LineBreak"), std::string(reinterpret_cast<char const*>(
+                                                       pXmlObj->nodesetval->nodeTab[0]->name)));
+    xmlXPathFreeObject(pXmlObj);
+    pXmlObj = getXPathNode(pLayout, "/root/page[1]/body/txt[1]/child::*[4]");
+    CPPUNIT_ASSERT_EQUAL(std::string("Text"), std::string(reinterpret_cast<char const*>(
+                                                  pXmlObj->nodesetval->nodeTab[0]->name)));
+    xmlXPathFreeObject(pXmlObj);
+    pXmlObj = getXPathNode(pLayout, "/root/page[1]/body/txt[1]/child::*[5]");
+    CPPUNIT_ASSERT_EQUAL(std::string("Special"), std::string(reinterpret_cast<char const*>(
+                                                     pXmlObj->nodesetval->nodeTab[0]->name)));
+    xmlXPathFreeObject(pXmlObj);
+    pXmlObj = getXPathNode(pLayout, "/root/page[1]/body/txt[1]/child::*[6]");
+    CPPUNIT_ASSERT_EQUAL(std::string("Text"), std::string(reinterpret_cast<char const*>(
+                                                  pXmlObj->nodesetval->nodeTab[0]->name)));
+    xmlXPathFreeObject(pXmlObj);
+    pXmlObj = getXPathNode(pLayout, "/root/page[1]/body/txt[1]/child::*[7]");
+    CPPUNIT_ASSERT_EQUAL(std::string("LineBreak"), std::string(reinterpret_cast<char const*>(
+                                                       pXmlObj->nodesetval->nodeTab[0]->name)));
+    xmlXPathFreeObject(pXmlObj);
+    pXmlObj = getXPathNode(pLayout, "/root/page[1]/body/txt[1]/child::*[8]");
+    CPPUNIT_ASSERT_EQUAL(std::string("Finish"), std::string(reinterpret_cast<char const*>(
+                                                    pXmlObj->nodesetval->nodeTab[0]->name)));
+    xmlXPathFreeObject(pXmlObj);
+
+    assertXPath(pLayout, "/root/page[1]/body/txt[1]/Text[1]", "Portion", "Blah blah bla bla bla ");
+    assertXPath(pLayout, "/root/page[1]/body/txt[1]/Text[2]", "Portion", "Foostrasse");
+    assertXPath(pLayout, "/root/page[1]/body/txt[1]/Text[3]", "Portion", "13/c/2, etc.");
+}
+
 CPPUNIT_TEST_FIXTURE(SwLayoutWriter, testRedlineFlysInFlys)
 {
     loadURL("private:factory/swriter", nullptr);