Fix links to user IDs.

git-svn-id: https://www.unprompted.com/svn/projects/tildefriends/trunk@3776 ed5197a5-7fde-0310-b194-c3ffbd925b24

apps/cory/index/tf-shared.js

@@ -0,0 +1,19 @@
+"use strict";
+
+function markdown(md) {
+	var reader = new commonmark.Parser({safe: true});
+	var writer = new commonmark.HtmlRenderer();
+	var parsed = reader.parse(md);
+	var walker = parsed.walker();
+	var event, node;
+	while ((event = walker.next())) {
+		node = event.node;
+		if (event.entering && node.type == 'link') {
+			if (node.destination.startsWith('@') &&
+				node.destination.endsWith('.ed25519')) {
+				node.destination = '#' + node.destination;
+			}
+		}
+	}
+	return writer.render(parsed);
+}