It will allow to autotest code

src/texteditor/commonwidget/findutils.cpp

@@ -31,19 +31,34 @@ QTextDocument::FindFlags FindUtils::convertTextEditFindFlags(TextEditFindBarBase
     return flags;
 }
 
-int FindUtils::replaceAll(QTextDocument *document, const TextFindWidget *findWidget, const QString &replaceWidget)
+int FindUtils::replaceAll(QTextDocument *document, const QString &str, const QString &replaceWidget, QTextDocument::FindFlags searchOptions)
 {
     QTextCursor c(document);
     c.beginEditBlock();
     int count = 0;
     // Ignoring FindBackward when replacing all
-    const QTextDocument::FindFlags flags = FindUtils::convertTextEditFindFlags(findWidget->searchOptions()) & ~QTextDocument::FindBackward;
+    const QTextDocument::FindFlags flags = searchOptions & ~QTextDocument::FindBackward;
     while (!c.isNull()) {
-        if (findWidget->isRegularExpression()) {
-            c = document->find(findWidget->searchRegularExpression(), c, flags);
-        } else {
-            c = document->find(findWidget->searchText(), c, flags);
+        c = document->find(str, c, flags);
+        if (!c.isNull()) {
+            // find() selects found text, and insertText() replaces selection
+            c.insertText(replaceWidget);
+            count++;
         }
+    }
+    c.endEditBlock();
+    return count;
+}
+
+int FindUtils::replaceAll(QTextDocument *document, const QRegularExpression &regExp, const QString &replaceWidget, QTextDocument::FindFlags searchOptions)
+{
+    QTextCursor c(document);
+    c.beginEditBlock();
+    int count = 0;
+    // Ignoring FindBackward when replacing all
+    const QTextDocument::FindFlags flags = searchOptions & ~QTextDocument::FindBackward;
+    while (!c.isNull()) {
+        c = document->find(regExp, c, flags);
         if (!c.isNull()) {
             // find() selects found text, and insertText() replaces selection
             c.insertText(replaceWidget);

src/texteditor/commonwidget/findutils.h

@@ -27,8 +27,9 @@ namespace FindUtils
  *
  * @return number of replacements done
  */
-Q_REQUIRED_RESULT int replaceAll(QTextDocument *document, const TextFindWidget *findWidget, const QString &replaceWidget);
-
+Q_REQUIRED_RESULT int replaceAll(QTextDocument *document, const QString &str, const QString &replaceWidget, QTextDocument::FindFlags searchOptions);
+Q_REQUIRED_RESULT int
+replaceAll(QTextDocument *document, const QRegularExpression &regExp, const QString &replaceWidget, QTextDocument::FindFlags searchOptions);
 Q_REQUIRED_RESULT QString normalize(QStringView str);
 Q_REQUIRED_RESULT QChar normalize(QChar c);
 Q_REQUIRED_RESULT bool find(QPlainTextEdit *view, const QString &searchText, QTextDocument::FindFlags searchOptions);

src/texteditor/plaintexteditor/plaintexteditfindbar.cpp

@@ -111,6 +111,13 @@ void PlainTextEditFindBar::slotReplaceText()
 
 void PlainTextEditFindBar::slotReplaceAllText()
 {
-    const int count = FindUtils::replaceAll(d->mView->document(), mFindWidget, mReplaceWidget->replaceLineEdit()->text());
+    int count = 0;
+    const QString replaceStr{mReplaceWidget->replaceLineEdit()->text()};
+    const QTextDocument::FindFlags searchOptions{FindUtils::convertTextEditFindFlags(mFindWidget->searchOptions())};
+    if (mFindWidget->isRegularExpression()) {
+        count = FindUtils::replaceAll(d->mView->document(), mFindWidget->searchRegularExpression(), replaceStr, searchOptions);
+    } else {
+        count = FindUtils::replaceAll(d->mView->document(), mFindWidget->searchText(), replaceStr, searchOptions);
+    }
     Q_EMIT displayMessageIndicator(i18np("%1 replacement made", "%1 replacements made", count));
 }

src/texteditor/richtexteditor/richtexteditfindbar.cpp

@@ -101,6 +101,13 @@ void RichTextEditFindBar::slotReplaceText()
 
 void RichTextEditFindBar::slotReplaceAllText()
 {
-    const int count = FindUtils::replaceAll(d->mView->document(), mFindWidget, mReplaceWidget->replaceLineEdit()->text());
+    int count = 0;
+    const QString replaceStr{mReplaceWidget->replaceLineEdit()->text()};
+    const QTextDocument::FindFlags searchOptions{FindUtils::convertTextEditFindFlags(mFindWidget->searchOptions())};
+    if (mFindWidget->isRegularExpression()) {
+        count = FindUtils::replaceAll(d->mView->document(), mFindWidget->searchRegularExpression(), replaceStr, searchOptions);
+    } else {
+        count = FindUtils::replaceAll(d->mView->document(), mFindWidget->searchText(), replaceStr, searchOptions);
+    }
     Q_EMIT displayMessageIndicator(i18np("%1 replacement made", "%1 replacements made", count));
 }