O[U]String::replaceAt overloads that take string_view

which results in lots of nice string_view improvements picked up by the
plugins

Change-Id: Ib0ec3887816b3d4436d003b739d9814f83e244b2
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/125657
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

29 files changed, 87 insertions, 87 deletions

diff --git a/sw/source/core/access/acccell.cxx b/sw/source/core/access/acccell.cxx
index d79f4eb5caef..419206c56f00 100644
--- a/sw/source/core/access/acccell.cxx
+++ b/sw/source/core/access/acccell.cxx
@@ -370,7 +370,7 @@ uno::Any SwAccessibleCell::getMinimumIncrement(  )
     return uno::Any();
 }
 
-static OUString ReplaceOneChar(const OUString& oldOUString, std::u16string_view replacedChar, const OUString& replaceStr)
+static OUString ReplaceOneChar(const OUString& oldOUString, std::u16string_view replacedChar, std::u16string_view replaceStr)
 {
     int iReplace = oldOUString.lastIndexOf(replacedChar);
     OUString aRet = oldOUString;
@@ -384,11 +384,11 @@ static OUString ReplaceOneChar(const OUString& oldOUString, std::u16string_view
 
 static OUString ReplaceFourChar(const OUString& oldOUString)
 {
-    OUString aRet = ReplaceOneChar(oldOUString,u"\\","\\\\");
-    aRet = ReplaceOneChar(aRet,u";","\\;");
-    aRet = ReplaceOneChar(aRet,u"=","\\=");
-    aRet = ReplaceOneChar(aRet,u",","\\,");
-    aRet = ReplaceOneChar(aRet,u":","\\:");
+    OUString aRet = ReplaceOneChar(oldOUString, u"\\", u"\\\\");
+    aRet = ReplaceOneChar(aRet, u";", u"\\;");
+    aRet = ReplaceOneChar(aRet, u"=", u"\\=");
+    aRet = ReplaceOneChar(aRet, u",", u"\\,");
+    aRet = ReplaceOneChar(aRet, u":", u"\\:");
     return aRet;
 }
 
diff --git a/sw/source/core/crsr/swcrsr.cxx b/sw/source/core/crsr/swcrsr.cxx
index 6f4ed5f01ed0..c5061c42f854 100644
--- a/sw/source/core/crsr/swcrsr.cxx
+++ b/sw/source/core/crsr/swcrsr.cxx
@@ -1546,7 +1546,7 @@ static OUString lcl_MaskDeletedRedlines( const SwTextNode* pTextNd )
                     pRed->CalcStartEnd( pTextNd->GetIndex(), nStart, nEnd );
 
                     while ( nStart < nEnd && nStart < sNodeText.getLength() )
-                        sNodeText = sNodeText.replaceAt( nStart++, 1, OUString(CH_TXTATR_INWORD) );
+                        sNodeText = sNodeText.replaceAt( nStart++, 1, rtl::OUStringChar(CH_TXTATR_INWORD) );
                 }
             }
         }
diff --git a/sw/source/core/edit/autofmt.cxx b/sw/source/core/edit/autofmt.cxx
index 27b6b1c79108..6df314ae55c2 100644
--- a/sw/source/core/edit/autofmt.cxx
+++ b/sw/source/core/edit/autofmt.cxx
@@ -853,7 +853,7 @@ SwAutoFormat::GetDigitLevel(const SwTextFrame& rFrame, TextFrameIndex& rPos,
 
                 eScan = (eScan & ~(UPPER_ALPHA|LOWER_ALPHA)) | eTmpScan;
                 if( pNumTypes )
-                    (*pNumTypes) = pNumTypes->replaceAt( pNumTypes->getLength() - 1, 1, OUString(c) );
+                    (*pNumTypes) = pNumTypes->replaceAt( pNumTypes->getLength() - 1, 1, rtl::OUStringChar(c) );
             }
 
             if( eScan & DELIM )
diff --git a/sw/source/core/fields/expfld.cxx b/sw/source/core/fields/expfld.cxx
index 44c589060feb..ee4cfc5c3460 100644
--- a/sw/source/core/fields/expfld.cxx
+++ b/sw/source/core/fields/expfld.cxx
@@ -112,7 +112,7 @@ OUString ReplacePoint( const OUString& rTmpName, bool bWithCommandType )
         return rTmpName;
     }
 
-    OUString sRes = rTmpName.replaceAt(nIndex, 1, OUString(DB_DELIM));
+    OUString sRes = rTmpName.replaceAt(nIndex, 1, rtl::OUStringChar(DB_DELIM));
 
     if (bWithCommandType)
     {
@@ -121,13 +121,13 @@ OUString ReplacePoint( const OUString& rTmpName, bool bWithCommandType )
         {
             return sRes;
         }
-        sRes = sRes.replaceAt(nIndex, 1, OUString(DB_DELIM));
+        sRes = sRes.replaceAt(nIndex, 1, rtl::OUStringChar(DB_DELIM));
     }
 
     nIndex = sRes.indexOf('.');
     if (nIndex>=0)
     {
-        sRes = sRes.replaceAt(nIndex, 1, OUString(DB_DELIM));
+        sRes = sRes.replaceAt(nIndex, 1, rtl::OUStringChar(DB_DELIM));
     }
     return sRes;
 }
diff --git a/sw/source/core/table/swtable.cxx b/sw/source/core/table/swtable.cxx
index da6255a73770..a272642125da 100644
--- a/sw/source/core/table/swtable.cxx
+++ b/sw/source/core/table/swtable.cxx
@@ -101,10 +101,10 @@ static OUString& lcl_TabToBlankAtSttEnd( OUString& rText )
 
     for( n = 0; n < rText.getLength() && ' ' >= ( c = rText[n] ); ++n )
         if( '\x9' == c )
-            rText = rText.replaceAt( n, 1, " " );
+            rText = rText.replaceAt( n, 1, u" " );
     for( n = rText.getLength(); n && ' ' >= ( c = rText[--n] ); )
         if( '\x9' == c )
-            rText = rText.replaceAt( n, 1, " " );
+            rText = rText.replaceAt( n, 1, u" " );
     return rText;
 }
 
diff --git a/sw/source/core/text/porfld.cxx b/sw/source/core/text/porfld.cxx
index 7c9aba47d74e..c366401c9153 100644
--- a/sw/source/core/text/porfld.cxx
+++ b/sw/source/core/text/porfld.cxx
@@ -68,7 +68,7 @@ void SwFieldPortion::TakeNextOffset( const SwFieldPortion* pField )
 {
     OSL_ENSURE( pField, "TakeNextOffset: Missing Source" );
     m_nNextOffset = pField->GetNextOffset();
-    m_aExpand = m_aExpand.replaceAt(0, sal_Int32(m_nNextOffset), "");
+    m_aExpand = m_aExpand.replaceAt(0, sal_Int32(m_nNextOffset), u"");
     m_bFollow = true;
 }
 
diff --git a/sw/source/core/txtnode/fntcache.cxx b/sw/source/core/txtnode/fntcache.cxx
index ccc25f50df9c..f2c18d7b1ce9 100644
--- a/sw/source/core/txtnode/fntcache.cxx
+++ b/sw/source/core/txtnode/fntcache.cxx
@@ -1616,16 +1616,16 @@ void SwFntObj::DrawText( SwDrawTextInfo &rInf )
                     if ((i + nCopyStart + 1 >= sal_Int32(rInf.GetLen())) ||
                         aKernArray[i + nCopyStart] != aKernArray[ i + nCopyStart + 1])
                     {
-                        aBulletOverlay = aBulletOverlay.replaceAt(i, 1, OUString(CH_BULLET));
+                        aBulletOverlay = aBulletOverlay.replaceAt(i, 1, rtl::OUStringChar(CH_BULLET));
                     }
                     else
                     {
-                        aBulletOverlay = aBulletOverlay.replaceAt(i, 1, OUString(CH_BLANK));
+                        aBulletOverlay = aBulletOverlay.replaceAt(i, 1, rtl::OUStringChar(CH_BLANK));
                     }
                 }
                 else
                 {
-                    aBulletOverlay = aBulletOverlay.replaceAt(i, 1, OUString(CH_BLANK));
+                    aBulletOverlay = aBulletOverlay.replaceAt(i, 1, rtl::OUStringChar(CH_BLANK));
                 }
         }
 
@@ -2502,7 +2502,7 @@ TextFrameIndex SwFont::GetTextBreak(SwDrawTextInfo const & rInf, tools::Long nTe
                     // In this case, the beginning of aTmpText is wrong.
                     OUString aSnippetTmp(aSnippet.copy(0, 1));
                     aSnippetTmp = m_aSub[m_nActual].CalcCaseMap( aSnippetTmp );
-                    aTmpText = aTmpText.replaceAt( 0, aSnippetTmp.getLength(), OUString(aSnippet[0]) );
+                    aTmpText = aTmpText.replaceAt( 0, aSnippetTmp.getLength(), rtl::OUStringChar(aSnippet[0]) );
                 }
             }
 
diff --git a/sw/source/core/txtnode/modeltoviewhelper.cxx b/sw/source/core/txtnode/modeltoviewhelper.cxx
index cf4983192b23..c8c6095726cb 100644
--- a/sw/source/core/txtnode/modeltoviewhelper.cxx
+++ b/sw/source/core/txtnode/modeltoviewhelper.cxx
@@ -226,7 +226,7 @@ ModelToViewHelper::ModelToViewHelper(const SwTextNode &rNode,
             sal_Int32 const viewBlockPos(nBlockStart + nOffset);
             m_aMap.emplace_back(modelBlockPos, viewBlockPos, false);
 
-            m_aRetText = m_aRetText.replaceAt(nOffset + nBlockStart, nBlockLen, OUString());
+            m_aRetText = m_aRetText.replaceAt(nOffset + nBlockStart, nBlockLen, u"");
             nOffset -= nBlockLen;
         }
         else
diff --git a/sw/source/core/txtnode/ndtxt.cxx b/sw/source/core/txtnode/ndtxt.cxx
index 33509d405aad..5134d7672fa2 100644
--- a/sw/source/core/txtnode/ndtxt.cxx
+++ b/sw/source/core/txtnode/ndtxt.cxx
@@ -2392,8 +2392,8 @@ void SwTextNode::CutImpl( SwTextNode * const pDest, const SwIndex & rDestStart,
         abort();
     }
     pDest->m_Text = pDest->m_Text.replaceAt(nDestStart, 0,
-                        m_Text.copy(nTextStartIdx, nLen));
-    OUString const newText = m_Text.replaceAt(nTextStartIdx, nLen, "");
+                        m_Text.subView(nTextStartIdx, nLen));
+    OUString const newText = m_Text.replaceAt(nTextStartIdx, nLen, u"");
     nLen = pDest->m_Text.getLength() - nInitSize; // update w/ current size!
     if (!nLen)                 // String didn't grow?
         return;
@@ -2639,7 +2639,7 @@ void SwTextNode::EraseText(const SwIndex &rIdx, const sal_Int32 nCount,
                       ? m_Text.getLength() - nStartIdx : nCount;
     const sal_Int32 nEndIdx = nStartIdx + nCnt;
     if (nEndIdx <= m_Text.getLength())
-        m_Text = m_Text.replaceAt(nStartIdx, nCnt, "");
+        m_Text = m_Text.replaceAt(nStartIdx, nCnt, u"");
 
     // GCAttr(); don't remove all empty ones, just the ones that are in the
     // range but not at the end of the range.
@@ -3679,10 +3679,10 @@ void SwTextNode::ReplaceText( const SwIndex& rStart, const sal_Int32 nDelLen,
     {
         // Replace the 1st char, then delete the rest and insert.
         // This way the attributes of the 1st char are expanded!
-        m_Text = m_Text.replaceAt(nStartPos, 1, sInserted.copy(0, 1));
+        m_Text = m_Text.replaceAt(nStartPos, 1, sInserted.subView(0, 1));
 
         ++const_cast<SwIndex&>(rStart);
-        m_Text = m_Text.replaceAt(rStart.GetIndex(), nLen - 1, "");
+        m_Text = m_Text.replaceAt(rStart.GetIndex(), nLen - 1, u"");
         Update( rStart, nLen - 1, true );
 
         OUString aTmpText( sInserted.copy(1) );
@@ -3691,7 +3691,7 @@ void SwTextNode::ReplaceText( const SwIndex& rStart, const sal_Int32 nDelLen,
     }
     else
     {
-        m_Text = m_Text.replaceAt(nStartPos, nLen, "");
+        m_Text = m_Text.replaceAt(nStartPos, nLen, u"");
         Update( rStart, nLen, true );
 
         m_Text = m_Text.replaceAt(nStartPos, 0, sInserted);
diff --git a/sw/source/core/txtnode/thints.cxx b/sw/source/core/txtnode/thints.cxx
index e97df81267df..5aba3a2b6e64 100644
--- a/sw/source/core/txtnode/thints.cxx
+++ b/sw/source/core/txtnode/thints.cxx
@@ -1389,7 +1389,7 @@ bool SwTextNode::InsertHint( SwTextAttr * const pAttr, const SetAttrMode nMode )
                             // delete the char from the string
                             assert(CH_TXTATR_BREAKWORD == m_Text[pAttr->GetStart()]
                                 || CH_TXTATR_INWORD == m_Text[pAttr->GetStart()]);
-                            m_Text = m_Text.replaceAt(pAttr->GetStart(), 1, "");
+                            m_Text = m_Text.replaceAt(pAttr->GetStart(), 1, u"");
                             // Update SwIndexes
                             SwIndex aTmpIdx( this, pAttr->GetStart() );
                             Update( aTmpIdx, 1, true );
@@ -1420,7 +1420,7 @@ bool SwTextNode::InsertHint( SwTextAttr * const pAttr, const SetAttrMode nMode )
                         // delete the char from the string
                         assert(CH_TXTATR_BREAKWORD == m_Text[pAttr->GetStart()]
                             || CH_TXTATR_INWORD == m_Text[pAttr->GetStart()]);
-                        m_Text = m_Text.replaceAt(pAttr->GetStart(), 1, "");
+                        m_Text = m_Text.replaceAt(pAttr->GetStart(), 1, u"");
                         // Update SwIndexes
                         SwIndex aTmpIdx( this, pAttr->GetStart() );
                         Update( aTmpIdx, 1, true );
diff --git a/sw/source/core/undo/undel.cxx b/sw/source/core/undo/undel.cxx
index 88c8b2ed1f76..ed1cdf38794d 100644
--- a/sw/source/core/undo/undel.cxx
+++ b/sw/source/core/undo/undel.cxx
@@ -589,7 +589,7 @@ bool SwUndoDelete::CanGrouping( SwDoc& rDoc, const SwPaM& rDelPam )
         m_nEndContent++;    // Delete: attach char at the end
         nUChrPos++;
     }
-    m_aSttStr = m_aSttStr->replaceAt( nUChrPos, 0, OUString(cDelChar) );
+    m_aSttStr = m_aSttStr->replaceAt( nUChrPos, 0, rtl::OUStringChar(cDelChar) );
     pDelTextNd->EraseText( pStt->nContent, 1 );
 
     m_bGroup = true;
diff --git a/sw/source/core/unocore/unofield.cxx b/sw/source/core/unocore/unofield.cxx
index 729a2581075a..a09e6785c864 100644
--- a/sw/source/core/unocore/unofield.cxx
+++ b/sw/source/core/unocore/unofield.cxx
@@ -2568,10 +2568,10 @@ static OUString OldNameToNewName_Impl( const OUString &rOld )
     OUString sServiceNameCC( rOld );
     sal_Int32 nIdx = sServiceNameCC.indexOf( aOldNamePart1 );
     if (nIdx >= 0)
-        sServiceNameCC = sServiceNameCC.replaceAt( nIdx, strlen(aOldNamePart1), ".textfield.docinfo." );
+        sServiceNameCC = sServiceNameCC.replaceAt( nIdx, strlen(aOldNamePart1), u".textfield.docinfo." );
     nIdx = sServiceNameCC.indexOf( aOldNamePart2 );
     if (nIdx >= 0)
-        sServiceNameCC = sServiceNameCC.replaceAt( nIdx, strlen(aOldNamePart2), ".textfield." );
+        sServiceNameCC = sServiceNameCC.replaceAt( nIdx, strlen(aOldNamePart2), u".textfield." );
     return sServiceNameCC;
 }
 
diff --git a/sw/source/filter/html/css1atr.cxx b/sw/source/filter/html/css1atr.cxx
index 6618a5479165..de952e8552d8 100644
--- a/sw/source/filter/html/css1atr.cxx
+++ b/sw/source/filter/html/css1atr.cxx
@@ -886,7 +886,7 @@ sal_uInt16 SwHTMLWriter::GetCSS1Selector( const SwFormat *pFormat, OString& rTok
         sal_Int32 nPos = rClass.indexOf( '.' );
         if( nPos >= 0 && rClass.getLength() > nPos+1 )
         {
-            rClass = rClass.replaceAt( 0, nPos+1, "" );
+            rClass = rClass.replaceAt( 0, nPos+1, u"" );
         }
 
         rClass = GetAppCharClass().lowercase( rClass );
diff --git a/sw/source/filter/html/htmlflywriter.cxx b/sw/source/filter/html/htmlflywriter.cxx
index 73ab34c60616..2aee659fc6e8 100644
--- a/sw/source/filter/html/htmlflywriter.cxx
+++ b/sw/source/filter/html/htmlflywriter.cxx
@@ -2187,7 +2187,7 @@ void SwHTMLWriter::AddLinkTarget( const OUString& rURL )
         // Just remember it in a sorted array
         if( bEncoded )
         {
-            aURL = aURL.replaceAt( nPos - 1, 3, OUString(cMarkSeparator)  );
+            aURL = aURL.replaceAt( nPos - 1, 3, rtl::OUStringChar(cMarkSeparator)  );
         }
         m_aImplicitMarks.insert( aURL );
     }
@@ -2209,7 +2209,7 @@ void SwHTMLWriter::AddLinkTarget( const OUString& rURL )
             m_aOutlineMarkPoss.insert( m_aOutlineMarkPoss.begin()+nIns, nIdx );
             if( bEncoded )
             {
-                aURL = aURL.replaceAt( nPos - 1, 3, OUString(cMarkSeparator) );
+                aURL = aURL.replaceAt( nPos - 1, 3, rtl::OUStringChar(cMarkSeparator) );
             }
             m_aOutlineMarks.insert( m_aOutlineMarks.begin()+nIns, aURL );
         }
diff --git a/sw/source/filter/html/htmlform.cxx b/sw/source/filter/html/htmlform.cxx
index 94af6b26f7a1..60e6ea0f2924 100644
--- a/sw/source/filter/html/htmlform.cxx
+++ b/sw/source/filter/html/htmlform.cxx
@@ -2484,7 +2484,7 @@ void SwHTMLParser::InsertSelectText()
     {
         sal_Int32 nLen = rText.getLength();
         if( !nLen || ' '==rText[nLen-1])
-            aToken = aToken.replaceAt( 0, 1, "" );
+            aToken = aToken.replaceAt( 0, 1, u"" );
     }
     if( !aToken.isEmpty() )
         rText += aToken;
diff --git a/sw/source/filter/html/wrthtml.cxx b/sw/source/filter/html/wrthtml.cxx
index db4a0baad396..df4cef472ca2 100644
--- a/sw/source/filter/html/wrthtml.cxx
+++ b/sw/source/filter/html/wrthtml.cxx
@@ -672,13 +672,13 @@ static void lcl_html_OutSectionStartTag( SwHTMLWriter& rHTMLWrt,
             sal_Int32 nPos = aSection.indexOf( '%' );
             while( nPos != -1 )
             {
-                aSection = aSection.replaceAt(nPos, 1, "%25");
+                aSection = aSection.replaceAt(nPos, 1, u"%25");
                 nPos = aSection.indexOf( '%', nPos+3 );
             }
             nPos = aSection.indexOf( cDelim );
             while( nPos != -1 )
             {
-                aSection = aSection.replaceAt(nPos, 1, "%FF" );
+                aSection = aSection.replaceAt(nPos, 1, u"%FF" );
                 nPos = aSection.indexOf( cDelim, nPos+3 );
             }
             HTMLOutFuncs::Out_String( rHTMLWrt.Strm(), aSection,
diff --git a/sw/source/filter/ww8/writerwordglue.cxx b/sw/source/filter/ww8/writerwordglue.cxx
index 2e47db39fe5e..80fcb68c4e06 100644
--- a/sw/source/filter/ww8/writerwordglue.cxx
+++ b/sw/source/filter/ww8/writerwordglue.cxx
@@ -869,7 +869,7 @@ namespace sw
                     bool bIsCharA = ( nPos != -1 && IsNotAM( rParams, nPos ) );
                     bForceNatNum |= bIsCharA;
                     if ( bIsCharA )
-                        rParams = rParams.replaceAt( nPos, 1, "D" );
+                        rParams = rParams.replaceAt( nPos, 1, u"D" );
                     nLastPos = nPos;
                 } while ( -1 != nLastPos );
             }
@@ -898,7 +898,7 @@ namespace sw
                     if ( nDocLang == LANGUAGE_FRENCH )
                     {
                         if ( ( nChar == 'a' || nChar == 'A' ) && IsNotAM(rParams, nI) )
-                            rParams = rParams.replaceAt(nI, 1, "Y");
+                            rParams = rParams.replaceAt(nI, 1, u"Y");
                     }
                     if (nChar == '/')
                     {
@@ -906,7 +906,7 @@ namespace sw
                         // But not if it's a '/' inside AM/PM
                         if (!(IsPreviousAM(rParams, nI) && IsNextPM(rParams, nI)))
                         {
-                            rParams = rParams.replaceAt(nI, 1, "\\/");
+                            rParams = rParams.replaceAt(nI, 1, u"\\/");
                             nLen++;
                         }
                         nI++;
@@ -922,13 +922,13 @@ namespace sw
                         if ( rLang == LANGUAGE_FINNISH )
                         {
                             if (nChar == 'y' || nChar == 'Y')
-                                rParams = rParams.replaceAt(nI, 1, "V");
+                                rParams = rParams.replaceAt(nI, 1, u"V");
                             else if (nChar == 'm' || nChar == 'M')
-                                rParams = rParams.replaceAt(nI, 1, "K");
+                                rParams = rParams.replaceAt(nI, 1, u"K");
                             else if (nChar == 'd' || nChar == 'D')
-                                rParams = rParams.replaceAt(nI, 1, "P");
+                                rParams = rParams.replaceAt(nI, 1, u"P");
                             else if (nChar == 'h' || nChar == 'H')
-                                rParams = rParams.replaceAt(nI, 1, "T");
+                                rParams = rParams.replaceAt(nI, 1, u"T");
                         }
                         else if ( rLang.anyOf(
                             LANGUAGE_DANISH,
@@ -939,7 +939,7 @@ namespace sw
                             LANGUAGE_SWEDISH_FINLAND))
                         {
                             if (nChar == 'h' || nChar == 'H')
-                                rParams = rParams.replaceAt(nI, 1, "T");
+                                rParams = rParams.replaceAt(nI, 1, u"T");
                         }
                         else if ( rLang.anyOf(
                             LANGUAGE_PORTUGUESE,
@@ -966,31 +966,31 @@ namespace sw
                             LANGUAGE_SPANISH_PUERTO_RICO))
                         {
                             if (nChar == 'a' || nChar == 'A')
-                                rParams = rParams.replaceAt(nI, 1, "O");
+                                rParams = rParams.replaceAt(nI, 1, u"O");
                             else if (nChar == 'y' || nChar == 'Y')
-                                rParams = rParams.replaceAt(nI, 1, "A");
+                                rParams = rParams.replaceAt(nI, 1, u"A");
                         }
                         else if ( rLang.anyOf(
                             LANGUAGE_DUTCH,
                             LANGUAGE_DUTCH_BELGIAN))
                         {
                             if (nChar == 'y' || nChar == 'Y')
-                                rParams = rParams.replaceAt(nI, 1, "J");
+                                rParams = rParams.replaceAt(nI, 1, u"J");
                             else if (nChar == 'u' || nChar == 'U')
-                                rParams = rParams.replaceAt(nI, 1, "H");
+                                rParams = rParams.replaceAt(nI, 1, u"H");
                         }
                         else if ( rLang.anyOf(
                                 LANGUAGE_ITALIAN,
                                 LANGUAGE_ITALIAN_SWISS))
                         {
                             if (nChar == 'a' || nChar == 'A')
-                                rParams = rParams.replaceAt(nI, 1, "O");
+                                rParams = rParams.replaceAt(nI, 1, u"O");
                             else if (nChar == 'g' || nChar == 'G')
-                                rParams = rParams.replaceAt(nI, 1, "X");
+                                rParams = rParams.replaceAt(nI, 1, u"X");
                             else if (nChar == 'y' || nChar == 'Y')
-                                rParams = rParams.replaceAt(nI, 1, "A");
+                                rParams = rParams.replaceAt(nI, 1, u"A");
                             else if (nChar == 'd' || nChar == 'D')
-                                rParams = rParams.replaceAt(nI, 1, "G");
+                                rParams = rParams.replaceAt(nI, 1, u"G");
                         }
                         else if ( rLang.anyOf(
                             LANGUAGE_GERMAN,
@@ -1000,9 +1000,9 @@ namespace sw
                             LANGUAGE_GERMAN_LIECHTENSTEIN))
                         {
                             if (nChar == 'y' || nChar == 'Y')
-                                rParams = rParams.replaceAt(nI, 1, "J");
+                                rParams = rParams.replaceAt(nI, 1, u"J");
                             else if (nChar == 'd' || nChar == 'D')
-                                rParams = rParams.replaceAt(nI, 1, "T");
+                                rParams = rParams.replaceAt(nI, 1, u"T");
                         }
                         else if ( rLang.anyOf(
                             LANGUAGE_FRENCH,
@@ -1013,9 +1013,9 @@ namespace sw
                             LANGUAGE_FRENCH_MONACO))
                         {
                             if (nChar == 'y' || nChar == 'Y' || nChar == 'a')
-                                rParams = rParams.replaceAt(nI, 1, "A");
+                                rParams = rParams.replaceAt(nI, 1, u"A");
                             else if (nChar == 'd' || nChar == 'D' || nChar == 'j')
-                                rParams = rParams.replaceAt(nI, 1, "J");
+                                rParams = rParams.replaceAt(nI, 1, u"J");
                         }
                     }
                 }
@@ -1061,9 +1061,9 @@ namespace sw
                 if (!nI || rFormat[nI-1]!='\\')
                 {
                     if (rFormat[nI]=='\"')
-                        rFormat = rFormat.replaceAt(nI, 1, "\'");
+                        rFormat = rFormat.replaceAt(nI, 1, u"\'");
                     else if (rFormat[nI]=='\'')
-                        rFormat = rFormat.replaceAt(nI, 1, "\"");
+                        rFormat = rFormat.replaceAt(nI, 1, u"\"");
                 }
             }
         }
diff --git a/sw/source/filter/ww8/wrtw8num.cxx b/sw/source/filter/ww8/wrtw8num.cxx
index 857007872cea..4836678172e9 100644
--- a/sw/source/filter/ww8/wrtw8num.cxx
+++ b/sw/source/filter/ww8/wrtw8num.cxx
@@ -488,7 +488,7 @@ void MSWordExportBase::NumberingLevel(
                 {
                     *pLvlPos = static_cast<sal_uInt8>(nFnd + 1);
                     ++pLvlPos;
-                    sNumStr = sNumStr.replaceAt(nFnd, sSrch.getLength(), OUString(static_cast<char>(i)));
+                    sNumStr = sNumStr.replaceAt(nFnd, sSrch.getLength(), rtl::OUStringChar(static_cast<char>(i)));
                 }
             }
         }
@@ -635,7 +635,7 @@ void MSWordExportBase::SubstituteBullet( OUString& rNumStr,
     // If Bullet char is "", don't change
     if (rNumStr[0] != u'\0')
     {
-        rNumStr = rNumStr.replaceAt(0, 1, OUString(
+        rNumStr = rNumStr.replaceAt(0, 1, rtl::OUStringChar(
             msfilter::util::bestFitOpenSymbolToMSFont(rNumStr[0], rChrSet, sFontName)));
     }
 
diff --git a/sw/source/filter/ww8/ww8graf.cxx b/sw/source/filter/ww8/ww8graf.cxx
index 6a1d32d4ee21..35476fd90c34 100644
--- a/sw/source/filter/ww8/ww8graf.cxx
+++ b/sw/source/filter/ww8/ww8graf.cxx
@@ -542,7 +542,7 @@ static void lcl_StripFields(OUString &rString, WW8_CP &rNewStartCp)
         }
 
         const bool was0x14 = rString[nStopPos]==0x14;
-        rString = rString.replaceAt(nStartPos, nStopPos+1-nStartPos, "");
+        rString = rString.replaceAt(nStartPos, nStopPos+1-nStartPos, u"");
         rNewStartCp += nStopPos-nStartPos;
 
         if (was0x14)
@@ -551,7 +551,7 @@ static void lcl_StripFields(OUString &rString, WW8_CP &rNewStartCp)
             nStartPos = rString.indexOf(0x15, nStartPos);
             if (nStartPos<0)
                 return;
-            rString = rString.replaceAt(nStartPos, 1, "");
+            rString = rString.replaceAt(nStartPos, 1, u"");
         }
     }
 }
diff --git a/sw/source/filter/ww8/ww8par5.cxx b/sw/source/filter/ww8/ww8par5.cxx
index eba02826418e..85af5106bfaa 100644
--- a/sw/source/filter/ww8/ww8par5.cxx
+++ b/sw/source/filter/ww8/ww8par5.cxx
@@ -184,7 +184,7 @@ tools::Long SwWW8ImplReader::Read_Book(WW8PLCFManResult*)
             case 0x0d:
                 if( bAllowCr )
                 {
-                    aVal = aVal.replaceAt( nI, 1, "\n" );
+                    aVal = aVal.replaceAt( nI, 1, u"\n" );
                     bSetAsHex = false;
                 }
                 else
@@ -1058,29 +1058,29 @@ void SwWW8ImplReader::MakeTagString( OUString& rStr, const OUString& rOrg )
             case 132:                       // Exchange typographical quotation marks for normal ones
             case 148:
             case 147:
-                rStr = rStr.replaceAt( nI, 1, "\"" );
+                rStr = rStr.replaceAt( nI, 1, u"\"" );
                 break;
             case 19:
-                rStr = rStr.replaceAt( nI, 1, "{" );
+                rStr = rStr.replaceAt( nI, 1, u"{" );
                 break;  // 19..21 to {|}
             case 20:
-                rStr = rStr.replaceAt( nI, 1, "|" );
+                rStr = rStr.replaceAt( nI, 1, u"|" );
                 break;
             case 21:
-                rStr = rStr.replaceAt( nI, 1, "}" );
+                rStr = rStr.replaceAt( nI, 1, u"}" );
                 break;
             case '\\':                      // Tag \{|} with \ ...
             case '{':
             case '|':
             case '}':
-                rStr = rStr.replaceAt( nI, 0, "\\" );
+                rStr = rStr.replaceAt( nI, 0, u"\\" );
                 ++nI;
                 break;
             case 0x0b:
             case 0x0c:
             case 0x0d:
                 if( bAllowCr )
-                    rStr = rStr.replaceAt( nI, 1, "\n" );
+                    rStr = rStr.replaceAt( nI, 1, u"\n" );
                 else
                     bSetAsHex = true;
                 break;
diff --git a/sw/source/ui/dbui/dbinsdlg.cxx b/sw/source/ui/dbui/dbinsdlg.cxx
index 041412a32dba..83440e7bde58 100644
--- a/sw/source/ui/dbui/dbinsdlg.cxx
+++ b/sw/source/ui/dbui/dbinsdlg.cxx
@@ -555,7 +555,7 @@ IMPL_LINK( SwInsertDBColAutoPilot, TableToFromHdl, weld::Button&, rButton, void
             const sal_Int32 nSel = nMax - nPos;
             if( nSel )
                 // first delete the existing selection
-                aStr = aStr.replaceAt( nPos, nSel, "" );
+                aStr = aStr.replaceAt( nPos, nSel, u"" );
 
             aField = OUStringChar(cDBFieldStart) + aField + OUStringChar(cDBFieldEnd);
             if( !aStr.isEmpty() )
diff --git a/sw/source/ui/dialog/ascfldlg.cxx b/sw/source/ui/dialog/ascfldlg.cxx
index ee6733259408..2812cc3be8a5 100644
--- a/sw/source/ui/dialog/ascfldlg.cxx
+++ b/sw/source/ui/dialog/ascfldlg.cxx
@@ -101,7 +101,7 @@ SwAsciiFilterDlg::SwAsciiFilterDlg( weld::Window* pParent, SwDocShell& rDocSh,
                 if(sAsciiOptions.isEmpty())
                     sAsciiOptions = m_sExtraData.copy(nStt, nEnd - nStt);
                 nStt -= nDialogExtraDataLen;
-                m_sExtraData = m_sExtraData.replaceAt(nStt, nEnd - nStt + 1, "");
+                m_sExtraData = m_sExtraData.replaceAt(nStt, nEnd - nStt + 1, u"");
             }
         }
         if(!sAsciiOptions.isEmpty())
@@ -303,7 +303,7 @@ void SwAsciiFilterDlg::FillOptions( SwAsciiOptions& rOptions )
         sal_Int32 nEnd = m_sExtraData.indexOf( cDialogExtraDataClose,
                                         nStt + nDialogExtraDataLen );
         if( -1 != nEnd )
-            m_sExtraData = m_sExtraData.replaceAt( nStt, nEnd - nStt + 1, "" );
+            m_sExtraData = m_sExtraData.replaceAt( nStt, nEnd - nStt + 1, u"" );
     }
     m_sExtraData += sFindNm + sData + OUStringChar(cDialogExtraDataClose);
 }
diff --git a/sw/source/uibase/app/applab.cxx b/sw/source/uibase/app/applab.cxx
index 4bb9ed9f49c1..47af40becc01 100644
--- a/sw/source/uibase/app/applab.cxx
+++ b/sw/source/uibase/app/applab.cxx
@@ -125,7 +125,7 @@ static const SwFrameFormat *lcl_InsertLabText( SwWrtShell& rSh, const SwLabItem&
     OUString sDBName;
     if( (!rItem.m_bSynchron || !(nCol|nRow)) && !(sDBName = InsertLabEnvText( rSh, rFieldMgr, rItem.m_aWriting )).isEmpty() && !bLast )
     {
-        sDBName = comphelper::string::setToken(sDBName, 3, DB_DELIM, "True");
+        sDBName = comphelper::string::setToken(sDBName, 3, DB_DELIM, u"True");
         SwInsertField_Data aData(SwFieldTypesEnum::DatabaseNextSet, 0, sDBName, OUString(), 0, &rSh);
         rFieldMgr.InsertField( aData );
     }
diff --git a/sw/source/uibase/dbui/dbmgr.cxx b/sw/source/uibase/dbui/dbmgr.cxx
index fb1aedb3bdd7..9323c52770b2 100644
--- a/sw/source/uibase/dbui/dbmgr.cxx
+++ b/sw/source/uibase/dbui/dbmgr.cxx
@@ -2686,7 +2686,7 @@ OUString LoadAndRegisterDataSource_Impl(DBConnURIType type, const uno::Reference
         OUString sNewName = rURL.getName(
             INetURLObject::LAST_SEGMENT, true, INetURLObject::DecodeMechanism::Unambiguous);
         sal_Int32 nExtLen = sExt.getLength();
-        sNewName = sNewName.replaceAt(sNewName.getLength() - nExtLen - 1, nExtLen + 1, "");
+        sNewName = sNewName.replaceAt(sNewName.getLength() - nExtLen - 1, nExtLen + 1, u"");
 
         //find a unique name if sNewName already exists
         sFind = sNewName;
diff --git a/sw/source/uibase/docvw/edtwin.cxx b/sw/source/uibase/docvw/edtwin.cxx
index 4c8608c4a5b9..85e5eb8fb275 100644
--- a/sw/source/uibase/docvw/edtwin.cxx
+++ b/sw/source/uibase/docvw/edtwin.cxx
@@ -6085,7 +6085,7 @@ void QuickHelpData::FillStrArr( SwWrtShell const & rSh, const OUString& rWord )
         else
         {
             // First character is not lower case i.e. assume upper or title case
-            OUString sWordSentence = sWordLower.replaceAt( 0, 1, OUString(rWord[0]) );
+            OUString sWordSentence = sWordLower.replaceAt( 0, 1, rtl::OUStringChar(rWord[0]) );
             if ( rWord == sWordSentence )
                 aWordCase = CASE_SENTENCE;
             else
@@ -6121,7 +6121,7 @@ void QuickHelpData::FillStrArr( SwWrtShell const & rSh, const OUString& rWord )
                 if ( aWordCase == CASE_LOWER )
                     sStr = rCC.lowercase(rStr);
                 else if ( aWordCase == CASE_SENTENCE )
-                    sStr = rCC.lowercase(rStr).replaceAt(0, 1, OUString(rStr[0]));
+                    sStr = rCC.lowercase(rStr).replaceAt(0, 1, rtl::OUStringChar(rStr[0]));
                 else if ( aWordCase == CASE_UPPER )
                     sStr = rCC.uppercase(rStr);
 
@@ -6172,7 +6172,7 @@ void QuickHelpData::FillStrArr( SwWrtShell const & rSh, const OUString& rWord )
             sStr = rCC.lowercase(aCompletedString);
         else if (aWordCase == CASE_SENTENCE)
             sStr = rCC.lowercase(aCompletedString)
-                       .replaceAt(0, 1, OUString(aCompletedString[0]));
+                       .replaceAt(0, 1, rtl::OUStringChar(aCompletedString[0]));
         else if (aWordCase == CASE_UPPER)
             sStr = rCC.uppercase(aCompletedString);
 
diff --git a/sw/source/uibase/misc/redlndlg.cxx b/sw/source/uibase/misc/redlndlg.cxx
index e27a0a7d4c9b..cf5041236ee7 100644
--- a/sw/source/uibase/misc/redlndlg.cxx
+++ b/sw/source/uibase/misc/redlndlg.cxx
@@ -1173,7 +1173,7 @@ namespace
                 {
                     // cut out the alignment string
                     aStr = rExtraString.copy(nPos, n2 - nPos + 1);
-                    rExtraString = rExtraString.replaceAt(nPos, n2 - nPos + 1, "");
+                    rExtraString = rExtraString.replaceAt(nPos, n2 - nPos + 1, u"");
                     aStr = aStr.copy(n1 - nPos + 1);
                 }
             }
diff --git a/sw/source/uibase/shells/langhelper.cxx b/sw/source/uibase/shells/langhelper.cxx
index de01e243399c..0de6c4863ada 100644
--- a/sw/source/uibase/shells/langhelper.cxx
+++ b/sw/source/uibase/shells/langhelper.cxx
@@ -132,20 +132,20 @@ namespace SwLangHelper
                 if (-1 != (nPos = aNewLangText.indexOf( aSelectionLangPrefix )))
                 {
                     // ... for the current selection
-                    aNewLangText = aNewLangText.replaceAt(nPos, aSelectionLangPrefix.getLength(), "");
+                    aNewLangText = aNewLangText.replaceAt(nPos, aSelectionLangPrefix.getLength(), u"");
                     bForSelection = true;
                 }
                 else if (-1 != (nPos = aNewLangText.indexOf( aParagraphLangPrefix )))
                 {
                     // ... for the current paragraph language
-                    aNewLangText = aNewLangText.replaceAt(nPos, aParagraphLangPrefix.getLength(), "");
+                    aNewLangText = aNewLangText.replaceAt(nPos, aParagraphLangPrefix.getLength(), u"");
                     bForSelection = true;
                     bForParagraph = true;
                 }
                 else if (-1 != (nPos = aNewLangText.indexOf( aDocumentLangPrefix )))
                 {
                     // ... as default document language
-                    aNewLangText = aNewLangText.replaceAt(nPos, aDocumentLangPrefix.getLength(), "");
+                    aNewLangText = aNewLangText.replaceAt(nPos, aDocumentLangPrefix.getLength(), u"");
                     bForSelection = false;
                 }
 
diff --git a/sw/source/uibase/shells/textsh1.cxx b/sw/source/uibase/shells/textsh1.cxx
index f3b83841ccf1..0436659b20a0 100644
--- a/sw/source/uibase/shells/textsh1.cxx
+++ b/sw/source/uibase/shells/textsh1.cxx
@@ -478,20 +478,20 @@ void SwTextShell::Execute(SfxRequest &rReq)
                     if (-1 != (nPos = aNewLangText.indexOf( aSelectionLangPrefix )))
                     {
                         // ... for the current selection
-                        aNewLangText = aNewLangText.replaceAt(nPos, aSelectionLangPrefix.getLength(), "");
+                        aNewLangText = aNewLangText.replaceAt(nPos, aSelectionLangPrefix.getLength(), u"");
                         bForSelection = true;
                     }
                     else if (-1 != (nPos = aNewLangText.indexOf(aParagraphLangPrefix)))
                     {
                         // ... for the current paragraph language
-                        aNewLangText = aNewLangText.replaceAt(nPos, aParagraphLangPrefix.getLength(), "");
+                        aNewLangText = aNewLangText.replaceAt(nPos, aParagraphLangPrefix.getLength(), u"");
                         bForSelection = true;
                         bForParagraph = true;
                     }
                     else if (-1 != (nPos = aNewLangText.indexOf(aDocumentLangPrefix)))
                     {
                         // ... as default document language
-                        aNewLangText = aNewLangText.replaceAt(nPos, aDocumentLangPrefix.getLength(), "");
+                        aNewLangText = aNewLangText.replaceAt(nPos, aDocumentLangPrefix.getLength(), u"");
                         bForSelection = false;
                     }
 
@@ -1574,12 +1574,12 @@ void SwTextShell::Execute(SfxRequest &rReq)
         uno::Reference< linguistic2::XSpellAlternatives >  xSpellAlt;
         if(-1 != (nPos = sApplyText.indexOf( sGrammarRule )))
         {
-            sApplyText = sApplyText.replaceAt(nPos, sGrammarRule.getLength(), "");
+            sApplyText = sApplyText.replaceAt(nPos, sGrammarRule.getLength(), u"");
             bGrammar = true;
         }
         else if (-1 != (nPos = sApplyText.indexOf( sSpellingRule )))
         {
-            sApplyText = sApplyText.replaceAt(nPos, sSpellingRule.getLength(), "");
+            sApplyText = sApplyText.replaceAt(nPos, sSpellingRule.getLength(), u"");
             SwRect aToFill;
             xSpellAlt.set(rWrtSh.GetCorrection(nullptr, aToFill));
             bGrammar = false;
diff --git a/sw/source/uibase/uiview/srcview.cxx b/sw/source/uibase/uiview/srcview.cxx
index a5c2791da06b..050df4445d0c 100644
--- a/sw/source/uibase/uiview/srcview.cxx
+++ b/sw/source/uibase/uiview/srcview.cxx
@@ -183,7 +183,7 @@ static OUString lcl_ConvertTabsToSpaces( const OUString& sLine )
         }
         // Not 4 blanks, but on 4th TabPos:
         const sal_Int32 nPadLen = 4 - (nPos % 4);
-        aRet = aRet.replaceAt(nPos, 1, OUString(aPadSpaces, nPadLen));
+        aRet = aRet.replaceAt(nPos, 1, std::u16string_view{aPadSpaces, static_cast<size_t>(nPadLen)});
         nPos += nPadLen;
     }
     return aRet;