From 1cddc3d0b69ef07eedc6021ae4543d28488c3396 Mon Sep 17 00:00:00 2001
From: David Schulz <david.schulz@qt.io>
Date: Thu, 8 Feb 2024 11:07:40 +0100
Subject: [PATCH] TextEditor: fix applying empty list of format changes

The block might have had some highlighting before the update, so compare
the new ranges against the one from the layout and update the layout if
the format ranges differ.

Change-Id: Ia6a0025e74fa8941b1cccc00baa93d3d37cb9ff9
Reviewed-by: Artem Sokolovskii <artem.sokolovskii@qt.io>
---
 src/plugins/texteditor/syntaxhighlighterrunner.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/plugins/texteditor/syntaxhighlighterrunner.cpp b/src/plugins/texteditor/syntaxhighlighterrunner.cpp
index 0d5e32893ee..094e97e7a08 100644
--- a/src/plugins/texteditor/syntaxhighlighterrunner.cpp
+++ b/src/plugins/texteditor/syntaxhighlighterrunner.cpp
@@ -185,7 +185,7 @@ void SyntaxHighlighterRunner::applyFormatRanges(const QList<SyntaxHighlighter::R
 
         result.copyToBlock(docBlock);
 
-        if (!result.m_formatRanges.empty()) {
+        if (result.m_formatRanges != docBlock.layout()->formats()) {
             TextDocumentLayout::FoldValidator foldValidator;
             foldValidator.setup(qobject_cast<TextDocumentLayout *>(m_document->documentLayout()));
             docBlock.layout()->setFormats(result.m_formatRanges);