From c640118dfaa39415d27cd7dcc48657ccd075f441 Mon Sep 17 00:00:00 2001
From: Le Tan <tamlokveer@gmail.com>
Date: Wed, 7 Nov 2018 20:31:21 +0800
Subject: [PATCH] TextDocumentLayout: bug fix for block count change

Example text that will make VNote crash:

```
ab123  aaa
```

Then select the space before `aaa` and press `Enter`.
---
 src/vtextdocumentlayout.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/vtextdocumentlayout.cpp b/src/vtextdocumentlayout.cpp
index e17ef406..dd77c0c0 100644
--- a/src/vtextdocumentlayout.cpp
+++ b/src/vtextdocumentlayout.cpp
@@ -441,6 +441,7 @@ void VTextDocumentLayout::documentChanged(int p_from, int p_charsRemoved, int p_
     // May be an invalid block.
     QTextBlock changeEndBlock;
     if (p_charsRemoved == p_charsAdded
+        && newBlockCount == m_blockCount
         && changeStartBlock.position() == p_from
         && changeStartBlock.length() == p_charsAdded) {
         // TODO: we may need one more next block.
@@ -482,6 +483,8 @@ void VTextDocumentLayout::documentChanged(int p_from, int p_charsRemoved, int p_
         updateOffset(changeStartBlock);
     }
 
+    m_blockCount = newBlockCount;
+
     updateDocumentSize();
 
     // TODO: Update the view of all the blocks after changeStartBlock.