remove target=blank etc

eleventy.config.js

@@ -3,10 +3,13 @@ import { eleventyImageTransformPlugin } from "@11ty/eleventy-img";
 import eleventyNavigationPlugin from "@11ty/eleventy-navigation";
 import { feedPlugin } from "@11ty/eleventy-plugin-rss";
 import syntaxHighlight from "@11ty/eleventy-plugin-syntaxhighlight";
+
 import { attrs } from "@mdit/plugin-attrs";
-import { chunk } from "lodash-es";
+import { markdownitLinkAttributes } from 'markdown-it-link-attributes';
+
 import path from "node:path";
 import { execSync } from 'child_process';
+import { chunk } from "lodash-es";
 
 import pluginFilters from "./_config/filters.js";
 
@@ -14,6 +17,18 @@ export default async function(eleventyConfig) {
 	/* Markdown HTML attribute parsing */
 	eleventyConfig.amendLibrary("md", (mdLib) => mdLib.use(attrs));
 
+	/* Markdown apply target="_blank" to all external links */
+	const milaOptions = {
+    matcher(href) {
+      return href.match(/^https?:\/\//);
+    },
+    attrs: {
+      target: "_blank",
+      rel: "external",
+    },
+  };
+	eleventyConfig.amendLibrary("md", (mdLib) => mdLib.use(markdownitLinkAttributes, milaOptions));
+
 	/* Bundles */
 	/* CSS */
 	eleventyConfig.addBundle("css", {