From 3c7b3d58881b98806a0eb5bbd94a07c38b9fe7c5 Mon Sep 17 00:00:00 2001
From: Neil <nyamatongwe@gmail.com>
Date: Tue, 4 Feb 2025 20:57:26 +1100
Subject: Ensure undo selection history for view is deleted when view destroyed
 or history disabled.

---
 src/Document.cxx | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'src/Document.cxx')

diff --git a/src/Document.cxx b/src/Document.cxx
index dc82b1902..7543b4940 100644
--- a/src/Document.cxx
+++ b/src/Document.cxx
@@ -2615,7 +2615,11 @@ void Document::SetLexInterface(std::unique_ptr<LexInterface> pLexInterface) noex
 }
 
 void Document::SetViewState(void *view, ViewStateShared pVSS) {
-	viewData[view] = pVSS;
+	if (pVSS) {
+		viewData[view] = pVSS;
+	} else {
+		viewData.erase(view);
+	}
 }
 
 ViewStateShared Document::GetViewState(void *view) const noexcept {
-- 
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