From e891ffa5d197f5a02ea2436a179e020dd9d4f59e Mon Sep 17 00:00:00 2001
From: map-per <map-per@gmx.de>
Date: Sat, 8 Nov 2025 13:05:46 +0100
Subject: [PATCH] [editor] compare coordinates with tolerance and in WGS 84

Signed-off-by: map-per <map-per@gmx.de>
---
 libs/editor/osm_editor.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/libs/editor/osm_editor.cpp b/libs/editor/osm_editor.cpp
index 97b6b3425..e28295c69 100644
--- a/libs/editor/osm_editor.cpp
+++ b/libs/editor/osm_editor.cpp
@@ -647,7 +647,11 @@ void Editor::UploadChanges(string const & oauthToken, ChangesetTags tags, Finish
               try
               {
                 XMLFeature osmFeature = changeset.GetMatchingNodeFeatureFromOSM(objCreateData.mercator);
-                if (objCreateData.mercator == osmFeature.GetMercatorCenter())
+
+                // precision of OSM coordinates (WGS 84), ~= 1 cm
+                constexpr double tolerance = 0.0000001;
+
+                if (AlmostEqualAbs(feature.GetCenter(), osmFeature.GetCenter(), tolerance))
                 {
                   changeset.AddChangesetTag("info:merged_same_location", "yes");
                   feature = osmFeature;