From d357e5e19b1331d81c5ef324b9476b1daae5fad2 Mon Sep 17 00:00:00 2001
From: Jeff Dairiki <dairiki@dairiki.org>
Date: Sun, 27 Feb 2022 13:40:47 -0800
Subject: [PATCH] Avoid emitting links to non-existent plugin tag pages.

---
 templates/doc-page.html | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/templates/doc-page.html b/templates/doc-page.html
index f432428a..c151d8d4 100644
--- a/templates/doc-page.html
+++ b/templates/doc-page.html
@@ -53,10 +53,13 @@
 
       {{ this.body }}
       {% if this.parent._slug == 'events' %}
-        <br>
-        <p>
-          <a href="{{ ('/plugins/tag/' ~ this._slug ~ '/')|url }}" class="ref">Plugins That Use This Event</a>
-        </p>
+        {% if this._slug in site.query('/plugins').distinct('tags') %}
+          <br>
+          <p>
+            A list of some plugins that make use of this event is available
+            <a href="{{ ('/plugins/tag/' ~ this._slug ~ '/')|url }}" class="ref">here</a>.
+          </p>
+        {% endif %}
       {% endif %}
 
       {% if this.version_history %}