From 514f1be060adfcfe8fd7a07ac7fb220dcd67e9c2 Mon Sep 17 00:00:00 2001
From: Ole Eskild Steensen <ole@savvy.no>
Date: Thu, 26 Jan 2023 09:08:13 +0100
Subject: [PATCH] Escape "\" in tags, as they are invalid json

---
 .eleventy.js      | 9 +++++++++
 src/site/lunr.njk | 2 +-
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/.eleventy.js b/.eleventy.js
index d53e6980c..e62cb2597 100644
--- a/.eleventy.js
+++ b/.eleventy.js
@@ -289,6 +289,15 @@ module.exports = function (eleventyConfig) {
     return JSON.stringify(variable) || '""';
   });
 
+  eleventyConfig.addFilter('validJson', function (variable) {
+    if(Array.isArray((variable))){
+        return variable.map(x=>x.replaceAll("\\", "\\\\")).join(",");
+  }else if(typeof(variable) === 'string'){
+        return variable.replaceAll("\\", "\\\\"); 
+    }
+    return variable;
+  });
+
   return {
     dir: {
       input: "src/site",
diff --git a/src/site/lunr.njk b/src/site/lunr.njk
index 9b1f14d7d..8e79500f0 100644
--- a/src/site/lunr.njk
+++ b/src/site/lunr.njk
@@ -9,6 +9,6 @@ eleventyExcludeFromCollections: true
 		"date":"{{ post.date }}",
 		"url":"{{ post.url }}",
 		"content": {{ post.templateContent | striptags(true) | link | jsonify | safe  }},
-		"tags": [{{post.templateContent | link | searchableTags | safe }} {% if post.data.tags %}{% for tag in post.data.tags %}"{{tag}}"{% if not loop.last %},{% endif %}{% endfor %}{% endif %}]
+		"tags": [{{post.templateContent | link | searchableTags | safe }} {% if post.data.tags %}{% for tag in post.data.tags %}"{{tag|validJson}}"{% if not loop.last %},{% endif %}{% endfor %}{% endif %}]
 }{% if not loop.last %},{% endif %}
 {% endfor %}]