Allow triple-dashes in markdown (#938)

* Allow triple-dashes in markdown

* Changeset

* Remove the .only

.changeset/pretty-wolves-flash.md

@@ -0,0 +1,5 @@
+---
+'@astrojs/parser': patch
+---
+
+Prevents locking up checking for --- inside of the HTML portion

packages/astro-parser/src/parse/state/text.ts

@@ -13,7 +13,7 @@ export default function text(parser: Parser) {
     if (parser.current().name === 'code') {
       return !parser.match('<') && !parser.match('{');
     }
-    return !parser.match('---') && !parser.match('<') && !parser.match('{') && !parser.match('`');
+    return !parser.match('<') && !parser.match('{') && !parser.match('`');
   };
 
   while (parser.index < parser.template.length && shouldContinue()) {

packages/astro/test/astro-markdown.test.js

@@ -88,4 +88,11 @@ Markdown('Does not close parent early when using content attribute (#494)', asyn
   assert.equal($('#target').children().length, 2, '<Markdown content /> closed div#target early');
 });
 
+Markdown('Can render markdown with --- for horizontal rule', async ({ runtime }) => {
+  const result = await runtime.load('/dash');
+  assert.ok(!result.error, `build error: ${result.error}`);
+
+  // It works!
+});
+
 Markdown.run();

packages/astro/test/fixtures/astro-markdown/src/pages/dash.md

@@ -0,0 +1,14 @@
+---
+title: My Blog Post
+layout: ../layouts/content.astro
+---
+
+## Title
+
+Hello world
+
+With this in the body ---
+
+## Another
+
+more content