From 3ebf43703e50362776acf5b0fee6850decb12d0d Mon Sep 17 00:00:00 2001
From: Mathieu Pellerin <nirvn.asia@gmail.com>
Date: Wed, 25 Oct 2023 17:48:02 +0700
Subject: [PATCH] Fix copy/pasting of features to/from the same layer ignores
 avoid overlap settings

---
 src/app/qgisapp.cpp | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)

diff --git a/src/app/qgisapp.cpp b/src/app/qgisapp.cpp
index 212512731868..eb76360f9c04 100644
--- a/src/app/qgisapp.cpp
+++ b/src/app/qgisapp.cpp
@@ -10202,6 +10202,37 @@ void QgisApp::pasteFromClipboard( QgsMapLayer *destinationLayer )
   if ( duplicateFeature )
   {
     pastedFeatures = features;
+
+    for ( auto &feature : pastedFeatures )
+    {
+      QgsGeometry geom = feature.geometry();
+
+      if ( !( geom.isEmpty() || geom.isNull( ) ) )
+      {
+        // avoid intersection if enabled in digitize settings
+        QList<QgsVectorLayer *>  avoidIntersectionsLayers;
+        switch ( QgsProject::instance()->avoidIntersectionsMode() )
+        {
+          case Qgis::AvoidIntersectionsMode::AvoidIntersectionsCurrentLayer:
+            avoidIntersectionsLayers.append( pasteVectorLayer );
+            break;
+          case Qgis::AvoidIntersectionsMode::AvoidIntersectionsLayers:
+            avoidIntersectionsLayers = QgsProject::instance()->avoidIntersectionsLayers();
+            break;
+          case Qgis::AvoidIntersectionsMode::AllowIntersections:
+            break;
+        }
+        if ( avoidIntersectionsLayers.size() > 0 )
+        {
+          geom.avoidIntersectionsV2( avoidIntersectionsLayers );
+          feature.setGeometry( geom );
+        }
+
+        // count collapsed geometries
+        if ( geom.isEmpty() || geom.isNull( ) )
+          invalidGeometriesCount++;
+      }
+    }
   }
   else
   {