diff --git a/src/plugins/cppeditor/cpphighlighter.cpp b/src/plugins/cppeditor/cpphighlighter.cpp
index c9c2dfb9562..0f1a1b2dc36 100644
--- a/src/plugins/cppeditor/cpphighlighter.cpp
+++ b/src/plugins/cppeditor/cpphighlighter.cpp
@@ -94,11 +94,7 @@ void CppHighlighter::highlightBlock(const QString &text)
     // Keep "semantic parentheses".
     Parentheses parentheses = Utils::filtered(TextDocumentLayout::parentheses(currentBlock()),
             [](const Parenthesis &p) { return p.source.isValid(); });
-    const auto insertParen = [&parentheses](const Parenthesis &p) {
-        const auto it = std::lower_bound(parentheses.begin(), parentheses.end(), p,
-                [](const auto &p1, const auto &p2) { return p1.pos < p2.pos; });
-        parentheses.insert(it, p);
-    };
+    const auto insertParen = [&parentheses](const Parenthesis &p) { insertSorted(parentheses, p); };
     parentheses.reserve(5);
 
     bool expectPreprocessorKeyword = false;
diff --git a/src/plugins/cppeditor/semantichighlighter.cpp b/src/plugins/cppeditor/semantichighlighter.cpp
index 9a7764e1344..830efb08675 100644
--- a/src/plugins/cppeditor/semantichighlighter.cpp
+++ b/src/plugins/cppeditor/semantichighlighter.cpp
@@ -210,13 +210,7 @@ void SemanticHighlighter::onHighlighterResultAvailable(int from, int to)
         }
         QTC_ASSERT(paren.pos != -1, continue);
         paren.source = parenSource();
-
-        static const auto posCmp = [](const Parenthesis &p1, const Parenthesis &p2) {
-            return p1.pos < p2.pos;
-        };
-        const auto it = std::lower_bound(parentheses.second.begin(), parentheses.second.end(),
-                                         paren, posCmp);
-        parentheses.second.insert(it, paren);
+        insertSorted(parentheses.second, paren);
     }
     if (parentheses.first.isValid())
         TextDocumentLayout::setParentheses(parentheses.first, parentheses.second);
diff --git a/src/plugins/texteditor/textdocumentlayout.cpp b/src/plugins/texteditor/textdocumentlayout.cpp
index 111a47ca067..38a367cb89f 100644
--- a/src/plugins/texteditor/textdocumentlayout.cpp
+++ b/src/plugins/texteditor/textdocumentlayout.cpp
@@ -698,4 +698,11 @@ bool Parenthesis::operator==(const Parenthesis &other) const
     return pos == other.pos && chr == other.chr && source == other.source && type == other.type;
 }
 
+void insertSorted(Parentheses &list, const Parenthesis &elem)
+{
+    const auto it = std::lower_bound(list.begin(), list.end(), elem,
+            [](const auto &p1, const auto &p2) { return p1.pos < p2.pos; });
+    list.insert(it, elem);
+}
+
 } // namespace TextEditor
diff --git a/src/plugins/texteditor/textdocumentlayout.h b/src/plugins/texteditor/textdocumentlayout.h
index 69b0159860e..ce86ad42961 100644
--- a/src/plugins/texteditor/textdocumentlayout.h
+++ b/src/plugins/texteditor/textdocumentlayout.h
@@ -38,8 +38,6 @@
 #include <QPlainTextDocumentLayout>
 
 namespace TextEditor {
-struct Parenthesis;
-using Parentheses = QVector<Parenthesis>;
 
 struct TEXTEDITOR_EXPORT Parenthesis
 {
@@ -55,6 +53,8 @@ struct TEXTEDITOR_EXPORT Parenthesis
 
     bool operator==(const Parenthesis &other) const;
 };
+using Parentheses = QVector<Parenthesis>;
+TEXTEDITOR_EXPORT void insertSorted(Parentheses &list, const Parenthesis &elem);
 
 TEXTEDITOR_EXPORT QDebug operator<<(QDebug debug, const Parenthesis &parenthesis);