From 26870c681693ab48d101cceef9033178c7854ea5 Mon Sep 17 00:00:00 2001
From: yndx-birman <62902338+yndx-birman@users.noreply.github.com>
Date: Fri, 17 Sep 2021 02:32:24 +0300
Subject: [PATCH] fix: resolve conflict with markdown-it-katex plugin

Related issue https://github.com/waylonflinn/markdown-it-katex/issues/24
---
 package-lock.json | 24 ++++++++++++++++++++++++
 package.json      |  1 +
 patterns.js       |  2 +-
 test.js           |  8 ++++++++
 4 files changed, 34 insertions(+), 1 deletion(-)

diff --git a/package-lock.json b/package-lock.json
index 2c34ebf..d6b7f2b 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -3154,6 +3154,15 @@
         "verror": "1.10.0"
       }
     },
+    "katex": {
+      "version": "0.6.0",
+      "resolved": "https://registry.npmjs.org/katex/-/katex-0.6.0.tgz",
+      "integrity": "sha1-EkGOCRIcBckgQbazuftrqyE8tvM=",
+      "dev": true,
+      "requires": {
+        "match-at": "^0.1.0"
+      }
+    },
     "labeled-stream-splicer": {
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/labeled-stream-splicer/-/labeled-stream-splicer-2.0.1.tgz",
@@ -3335,6 +3344,21 @@
       "integrity": "sha512-ykLQZmhy8QnNEm6NgImIrr+/QMe7gSnHgLhNAjz9GGCNdSLR7C/SLFNwGdUZq7vK3a0myWiOYE0tpaZuB0rWWw==",
       "dev": true
     },
+    "markdown-it-katex": {
+      "version": "2.0.3",
+      "resolved": "https://registry.npmjs.org/markdown-it-katex/-/markdown-it-katex-2.0.3.tgz",
+      "integrity": "sha1-17hqGuoLnWSW+rTnkZoY/e9YnDk=",
+      "dev": true,
+      "requires": {
+        "katex": "^0.6.0"
+      }
+    },
+    "match-at": {
+      "version": "0.1.1",
+      "resolved": "https://registry.npmjs.org/match-at/-/match-at-0.1.1.tgz",
+      "integrity": "sha512-h4Yd392z9mST+dzc+yjuybOGFNOZjmXIPKWjxBd1Bb23r4SmDOsk2NYCU2BMUBGbSpZqwVsZYNq26QS3xfaT3Q==",
+      "dev": true
+    },
     "md5.js": {
       "version": "1.3.5",
       "resolved": "https://registry.npmjs.org/md5.js/-/md5.js-1.3.5.tgz",
diff --git a/package.json b/package.json
index 6eb9f04..0818545 100644
--- a/package.json
+++ b/package.json
@@ -45,6 +45,7 @@
     "eslint": "^5.16.0",
     "markdown-it": "^12.0.2",
     "markdown-it-implicit-figures": "^0.9.0",
+    "markdown-it-katex": "^2.0.3",
     "mocha": "^7.1.1",
     "nyc": "^14.1.1"
   },
diff --git a/patterns.js b/patterns.js
index 057254b..0744a7b 100644
--- a/patterns.js
+++ b/patterns.js
@@ -313,7 +313,7 @@ module.exports = options => {
             {
               position: -1,
               content: utils.hasDelimiters('end', options),
-              type: (t) => t !== 'code_inline'
+              type: (t) => t !== 'code_inline' && t !== 'math_inline'
             }
           ]
         }
diff --git a/test.js b/test.js
index 0379fb7..5589436 100644
--- a/test.js
+++ b/test.js
@@ -3,6 +3,7 @@
 const assert = require('assert');
 const Md = require('markdown-it');
 const implicitFigures = require('markdown-it-implicit-figures');
+const katex = require('markdown-it-katex');
 const attrs = require('./');
 const utils = require('./utils.js');
 
@@ -320,6 +321,13 @@ function describeTestsWithOptions(options, postText) {
       assert.equal(md.render(replaceDelimiters(src, options)), expected);
     });
 
+    it(replaceDelimiters('should work with plugin katex', options), () => {
+      md = md.use(katex);
+      const mdWithOnlyKatex = Md().use(katex);
+      src = '$\\sqrt{a}$';
+      assert.equal(md.render(src), mdWithOnlyKatex.render(src));
+    });
+
     it(replaceDelimiters('should not apply inside `code{.red}`', options), () => {
       src =  'paragraph `code{.red}`';
       expected = '<p>paragraph <code>code{.red}</code></p>\n';