From 405afdce701cfad7ac02584c05d232af0f18c91b Mon Sep 17 00:00:00 2001
From: Ed Sanders <esanders@wikimedia.org>
Date: Thu, 14 Sep 2017 13:45:10 +0100
Subject: [PATCH] Strip RESTBase IDs from historical diffs

Change-Id: I911d529204a97003ed233464709737b018918634
---
 modules/ve-mw/init/ve.init.mw.DiffLoader.js | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/modules/ve-mw/init/ve.init.mw.DiffLoader.js b/modules/ve-mw/init/ve.init.mw.DiffLoader.js
index 68f1c3de0a..225ab4bf24 100644
--- a/modules/ve-mw/init/ve.init.mw.DiffLoader.js
+++ b/modules/ve-mw/init/ve.init.mw.DiffLoader.js
@@ -27,9 +27,16 @@
 		getModelFromResponse: function ( response ) {
 			var doc,
 				targetClass = ve.init.mw.DesktopArticleTarget,
+				metadataIdRegExp = ve.init.platform.getMetadataIdRegExp(),
 				data = response ? ( response.visualeditor || response.visualeditoredit ) : null;
 			if ( data && typeof data.content === 'string' ) {
 				doc = targetClass.static.parseDocument( data.content, 'visual' );
+				// Strip RESTBase IDs
+				Array.prototype.forEach.call( doc.querySelectorAll( '[id^="mw"]' ), function ( element ) {
+					if ( element.id.match( metadataIdRegExp ) ) {
+						element.removeAttribute( 'id' );
+					}
+				} );
 				return targetClass.static.createModelFromDom( doc, 'visual' );
 			}
 			return null;