From ccf452acf6f2d97b8f72bc9e8efca3ea8e2f2b4d Mon Sep 17 00:00:00 2001
From: Bryan Housel <bryan@mapbox.com>
Date: Wed, 20 Sep 2017 10:35:25 -0400
Subject: [PATCH] Replace tag documentation when tag has changed (closes #4209)

---
 modules/ui/tag_reference.js | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/modules/ui/tag_reference.js b/modules/ui/tag_reference.js
index b5e5e5ec87..35a96376c9 100644
--- a/modules/ui/tag_reference.js
+++ b/modules/ui/tag_reference.js
@@ -170,8 +170,14 @@ export function uiTagReference(tag) {
 
 
     tagReference.body = function(selection) {
+
+        var tagid = tag.rtype || (tag.key + '-' + tag.value);
+
         body = selection.selectAll('.tag-reference-body')
-            .data([0]);
+            .data([tagid], function(d) { return d; });
+
+        body.exit()
+            .remove();
 
         body = body.enter()
             .append('div')