5 files changed, 8 insertions, 14 deletions
diff --git a/sc/inc/stringutil.hxx b/sc/inc/stringutil.hxx
index 8cdb5821d0a9..150a3ede269e 100644
--- a/sc/inc/stringutil.hxx
+++ b/sc/inc/stringutil.hxx
@@ -153,7 +153,7 @@ public:
     static OUString  SC_DLLPUBLIC GetQuotedToken(const OUString &rIn, sal_Int32 nToken, const OUString& rQuotedPairs,
                                         sal_Unicode cTok,  sal_Int32& rIndex );
 
-    static bool SC_DLLPUBLIC isMultiline( const OUString& rStr );
+    static bool SC_DLLPUBLIC isMultiline( std::u16string_view rStr );
 
     static ScInputStringType parseInputString(
         SvNumberFormatter& rFormatter, const OUString& rStr, LanguageType eLang );
diff --git a/sc/source/core/tool/stringutil.cxx b/sc/source/core/tool/stringutil.cxx
index 7532d720e57a..131853a5f162 100644
--- a/sc/source/core/tool/stringutil.cxx
+++ b/sc/source/core/tool/stringutil.cxx
@@ -421,15 +421,9 @@ OUString ScStringUtil::GetQuotedToken(const OUString &rIn, sal_Int32 nToken, con
     }
 }
 
-bool ScStringUtil::isMultiline( const OUString& rStr )
+bool ScStringUtil::isMultiline( std::u16string_view rStr )
 {
-    if (rStr.indexOf('\n') != -1)
-        return true;
-
-    if (rStr.indexOf('\r') != -1)
-        return true;
-
-    return false;
+    return rStr.find_first_of(u"\n\r") != std::u16string_view::npos;
 }
 
 ScInputStringType ScStringUtil::parseInputString(
diff --git a/sc/source/ui/app/inputhdl.cxx b/sc/source/ui/app/inputhdl.cxx
index 4d5d1a1d8ac2..abd1190475fb 100644
--- a/sc/source/ui/app/inputhdl.cxx
+++ b/sc/source/ui/app/inputhdl.cxx
@@ -1107,9 +1107,9 @@ void ScInputHandler::HideTipBelow()
 namespace
 {
 
-bool lcl_hasSingleToken(const OUString& s, sal_Unicode c)
+bool lcl_hasSingleToken(std::u16string_view s, sal_Unicode c)
 {
-    return !s.isEmpty() && s.indexOf(c)<0;
+    return !s.empty() && s.find(c) == std::u16string_view::npos;
 }
 
 }
diff --git a/sc/source/ui/docshell/docsh.cxx b/sc/source/ui/docshell/docsh.cxx
index 8c64e3a8416f..633fda283499 100644
--- a/sc/source/ui/docshell/docsh.cxx
+++ b/sc/source/ui/docshell/docsh.cxx
@@ -3422,7 +3422,7 @@ extern "C" SAL_DLLPUBLIC_EXPORT bool TestImportDBF(SvStream &rStream)
     OUString sTmpDir = aTmpDir.GetURL();
 
     OUString sExtension(".dbf");
-    utl::TempFile aTempInput(OUString(), true, &sExtension, &sTmpDir);
+    utl::TempFile aTempInput(u"", true, &sExtension, &sTmpDir);
     aTempInput.EnableKillingFile();
 
     SvStream* pInputStream = aTempInput.GetStream(StreamMode::WRITE);
diff --git a/sc/source/ui/unoobj/exceldetect.cxx b/sc/source/ui/unoobj/exceldetect.cxx
index a50f9994f4d2..75694bbc9620 100644
--- a/sc/source/ui/unoobj/exceldetect.cxx
+++ b/sc/source/ui/unoobj/exceldetect.cxx
@@ -120,9 +120,9 @@ bool isExcel40(const uno::Reference<io::XInputStream>& xInStream)
     return true;
 }
 
-bool isTemplate(const OUString& rType)
+bool isTemplate(std::u16string_view rType)
 {
-    return rType.indexOf("_VorlageTemplate") != -1;
+    return rType.find(u"_VorlageTemplate") != std::u16string_view::npos;
 }
 
 }