From 0f05a6abeb905c42d5a4b316da5e74bf224f90f4 Mon Sep 17 00:00:00 2001
From: Robert McGovern <rob@tarasis.net>
Date: Sat, 4 Feb 2023 17:33:25 +0000
Subject: [PATCH] Added option for lexer overrides

As Chroma doesn't support liquid or njk as languages, I have added an lexerOverride option so you can specify a different lexer to use instead of the language specified.
---
 demo/eleventy-config.js       |   8 +-
 demo/file-with-liquid-tags.md | 173 ++++++++++++++++++++++++++++++++++
 src/parseSyntaxArguments.js   |  10 +-
 3 files changed, 186 insertions(+), 5 deletions(-)
 create mode 100644 demo/file-with-liquid-tags.md

diff --git a/demo/eleventy-config.js b/demo/eleventy-config.js
index c6f37fc..2b6eb8f 100644
--- a/demo/eleventy-config.js
+++ b/demo/eleventy-config.js
@@ -1,9 +1,13 @@
 const syntaxHighlight = require("../.eleventy.js");
 
-module.exports = function(eleventyConfig) {
+module.exports = function (eleventyConfig) {
   eleventyConfig.addPlugin(syntaxHighlight, {
     // alwaysWrapLineHighlights: true
-    preAttributes: { tabindex: 0 }
+    lexerOverrides: {
+      njk: "vue",
+      liquid: "swift",
+    },
+    preAttributes: { tabindex: 0 },
   });
 
   eleventyConfig.setTemplateFormats("njk,liquid,md,css");
diff --git a/demo/file-with-liquid-tags.md b/demo/file-with-liquid-tags.md
new file mode 100644
index 0000000..9327bbd
--- /dev/null
+++ b/demo/file-with-liquid-tags.md
@@ -0,0 +1,173 @@
+JSON
+
+```json
+"services": [
+    {
+    "name": "Frontend Mentor",
+    "svgSource": "/svgs/frontendmentor.svg",
+    "svgAltText": "Frontend Mentor Logo",
+    "description": "Collection of challenges I completed for Frontend Mentor",
+    "cssClass": "",
+    "difficulty": [
+        {
+            "title": "Junior",
+            "cssClass": "frontEndMentorChallenges",
+            "challenges": [
+                {
+                    "title": "Advice Generator App",
+                    "url": "/FrontendMentor/junior/advice-generator-app/",
+                    "description": "",
+                    "techUsed": [
+                        "html5",
+                        "css3",
+                        "js"
+                    ],
+                    "screenshotURL": "/FrontendMentor/junior/advice-generator-app/screenshots/mobile.png",
+                    "screenshotAltText": "Advice Generator App"
+                }
+            ]
+        },
+```
+RAW Liquid
+
+{% raw %}
+```liquid
+{% assign navigation = site.data.navigation[include.nav] %}
+
+<nav class="nav__list">
+  {% if page.sidebar.title %}<h3 class="nav__title" style="padding-left: 0;">{{ page.sidebar.title }}</h3>{% endif %}
+  <input id="ac-toc" name="accordion-toc" type="checkbox" />
+  <label for="ac-toc">{{ ui-text[site.locale].menu_label | default: "Toggle Menu" }}</label>
+  <ul class="nav__items">
+    {% for nav in navigation %}
+      <li>
+        {% if nav.url %}
+          <a href="{{ nav.url | relative_url }}"><span class="nav__sub-title">{{ nav.title }}</span></a>
+        {% else %}
+          <span class="nav__sub-title">{{ nav.title }}</span>
+        {% endif %}
+
+        {% if nav.children != null %}
+        <ul>
+          {% for child in nav.children %}
+            <li><a href="{{ child.url | relative_url }}"{% if child.url == page.url %} class="active"{% endif %}>{{ child.title }}</a></li>
+          {% endfor %}
+        </ul>
+        {% endif %}
+      </li>
+    {% endfor %}
+  </ul>
+</nav>
+```
+{% endraw %}
+
+RAW - NJK
+
+{% raw %}
+```njk
+{# {% set projectPrefix = project %} #}
+
+{% if projectContent %}
+    <div class="project-card stacked">
+        <a href="{{projectContent.url}}">
+            <img loading="lazy" class="card__img" src="{{projectContent.screenshotURL}}"
+                        alt="{{projectContent.screenshotAltText}}"/>
+        </a>
+        <div class="card__content">
+            <h3 class="card__title">
+                {{projectContent.title}}
+            </h3>
+            {% if projectContent.description | length %}
+                <p class="card__description">
+                    {{projectContent.description}}
+                </p>
+            {% endif %}
+            <ul class="card__techUsed">
+                {% for tech in projectContent.techUsed %}
+                    {% if tech === "html5" %}
+                        <li>
+                            <img src="/svgs/html5.svg" alt="HTML5"/>
+                        </li>
+                    {% endif %}
+                    {% if tech === "css3" %}
+                        <li>
+                            <img src="/svgs/css3.svg" alt="CSS3"/>
+                        </li>
+                    {% endif %}
+                    {% if tech === "js" %}
+                        <li>
+                            <img src="/svgs/javascript.svg" alt="JavaScript"/>
+                        </li>
+                    {% endif %}
+                {% endfor %}
+            </ul>
+        </div>
+    </div>
+{% endif %}
+```
+{% endraw %}
+
+The finished build is then copied and published.
+
+None
+
+```text
+name: Build Eleventy
+
+on:
+    push:
+        branches:
+            - main
+
+jobs:
+    build:
+        runs-on: ubuntu-latest
+
+        strategy:
+            matrix:
+                node-version: [17.x]
+
+        steps:
+            - uses: actions/checkout@v2
+
+            - name: Use Node.js ${{ matrix.node-version }}
+              uses: actions/setup-node@v2
+              with:
+                  node-version: ${{ matrix.node-version }}
+
+            - name: Install dependencies & build
+              run: |
+                  npm ci
+                  npm run build
+
+            - name: Deploy
+              uses: peaceiris/actions-gh-pages@v3.7.3
+              with:
+                  publish_dir: ./www
+                  github_token: ${{ secrets.GITHUB_TOKEN }}
+```
+
+NJK
+
+
+{% raw %}
+
+```njk
+<!DOCTYPE html>
+<html lang="en">
+    <head>
+        <title>
+            {{ title }} - {{ site.url }}
+        </title>
+        {% include "global/site-meta.njk" %}
+        {% include "global/site-css.njk" %}
+        {% include "global/site-favicon.njk" %}
+    </head>
+    <body>
+        {% include "global/site-header.njk" %}
+        {% include "global/site-main.njk" %}
+        {% include "global/site-footer.njk" %}
+    </body>
+</html>
+```
+{% endraw %}
diff --git a/src/parseSyntaxArguments.js b/src/parseSyntaxArguments.js
index 87c1813..68c462e 100644
--- a/src/parseSyntaxArguments.js
+++ b/src/parseSyntaxArguments.js
@@ -63,10 +63,14 @@ function parseSyntaxArguments(args, context = {}) {
 
   let opts = "";
 
-  opts += `--lexer ${splitArgs[0]} `;
+  // Remove the lang from the arguments
+  let lang = splitArgs.shift();
 
-  // Remove the language which should be the first arg
-  splitArgs.shift();
+  if (context.lexerOverrides[lang]) {
+    lang = context.lexerOverrides[lang];
+  }
+
+  opts += `--lexer ${lang} `;
 
   if (Array.isArray(splitArgs)) {
     splitArgs.forEach((arg) => {