From cb6dedacfcaba74f99dd9f825832d4af5c14f88d Mon Sep 17 00:00:00 2001
From: Mark Olesen <Mark.Olesen@esi-group.com>
Date: Wed, 17 Mar 2021 12:06:19 +0100
Subject: [PATCH] STYLE: suppress meta information for empty zone meshes

---
 .../meshes/polyMesh/zones/ZoneMesh/ZoneMesh.C        | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/src/OpenFOAM/meshes/polyMesh/zones/ZoneMesh/ZoneMesh.C b/src/OpenFOAM/meshes/polyMesh/zones/ZoneMesh/ZoneMesh.C
index a97c20f567..c2386312c5 100644
--- a/src/OpenFOAM/meshes/polyMesh/zones/ZoneMesh/ZoneMesh.C
+++ b/src/OpenFOAM/meshes/polyMesh/zones/ZoneMesh/ZoneMesh.C
@@ -647,8 +647,16 @@ void Foam::ZoneMesh<ZoneType, MeshType>::movePoints(const pointField& pts)
 template<class ZoneType, class MeshType>
 void Foam::ZoneMesh<ZoneType, MeshType>::updateMetaData()
 {
-    dictionary& meta = this->getMetaData();
-    meta.set("names", this->names());
+    wordList zoneNames(this->names());
+    if (zoneNames.empty())
+    {
+        this->removeMetaData();
+    }
+    else
+    {
+        dictionary& meta = this->getMetaData();
+        meta.set("names", zoneNames);
+    }
 }