From deccfdf654982fcb2127cb061978d2d36939a2fd Mon Sep 17 00:00:00 2001
From: GogoVega <92022724+GogoVega@users.noreply.github.com>
Date: Thu, 7 Nov 2024 22:00:36 +0100
Subject: [PATCH] Handle users of env config nodes when undo subflow node
 changes

---
 .../@node-red/editor-client/src/js/history.js | 38 +++++++++++++++++++
 1 file changed, 38 insertions(+)

diff --git a/packages/node_modules/@node-red/editor-client/src/js/history.js b/packages/node_modules/@node-red/editor-client/src/js/history.js
index 2fa4e4427..60e71c391 100644
--- a/packages/node_modules/@node-red/editor-client/src/js/history.js
+++ b/packages/node_modules/@node-red/editor-client/src/js/history.js
@@ -453,10 +453,48 @@ RED.history = (function() {
                                     RED.events.emit("nodes:change",newConfigNode);
                                 }
                             });
+                        } else if (i === "env" && ev.node.type.indexOf("subflow:") === 0) {
+                            // Subflow can have config node in node.env
+                            let nodeList = ev.node.env || [];
+                            nodeList = nodeList.reduce((list, prop) => {
+                                if (prop.type === "conf-type" && prop.value) {
+                                    list.push(prop.value);
+                                }
+                                return list;
+                            }, []);
+
+                            nodeList.forEach(function(id) {
+                                const configNode = RED.nodes.node(id);
+                                if (configNode) {
+                                    if (configNode.users.indexOf(ev.node) !== -1) {
+                                        configNode.users.splice(configNode.users.indexOf(ev.node), 1);
+                                        RED.events.emit("nodes:change", configNode);
+                                    }
+                                }
+                            });
+
+                            nodeList = ev.changes.env || [];
+                            nodeList = nodeList.reduce((list, prop) => {
+                                if (prop.type === "conf-type" && prop.value) {
+                                    list.push(prop.value);
+                                }
+                                return list;
+                            }, []);
+
+                            nodeList.forEach(function(id) {
+                                const configNode = RED.nodes.node(id);
+                                if (configNode) {
+                                    if (configNode.users.indexOf(ev.node) === -1) {
+                                        configNode.users.push(ev.node);
+                                        RED.events.emit("nodes:change", configNode);
+                                    }
+                                }
+                            });
                         }
                         ev.node[i] = ev.changes[i];
                     }
                 }
+
                 ev.node.dirty = true;
                 ev.node.changed = ev.changed;