fix(website-meta.ts): change meta selector from "name" to "property" (#13847)

* fix: change meta selector from "name" to "property"

* chore: update changelog for version 1.9

* chore: update changelog for og:site_name meta tags clarification

Clarified the description of the change regarding the `og:site_name` meta tags to ensure proper metadata markdown processing.

* chore: Update changelog for version 1.9

* test: check if og:site_name in generated HTML correctly uses variable in site title

* test - use ensureHtmlElements instead of regex to check for HTML elements in tests

---------

Co-authored-by: Christophe Dervieux <christophe.dervieux@gmail.com>

Author: mcanouil

news/changelog-1.9.md

@@ -62,6 +62,7 @@ All changes included in 1.9:
 - ([#13547](https://github.com/quarto-dev/quarto-cli/issues/13547))`cookie-content: { type: express }` is now the default. Previously it was `type: implied`. It now means this will block cookies until the user expressly agrees to allow them (or continue blocking them if the user doesn't agree).
 - ([#13570](https://github.com/quarto-dev/quarto-cli/pull/13570)): Replace Twitter with Bluesky in default blog template and documentation examples. New blog projects now include Bluesky social links instead of Twitter.
 - ([#13716](https://github.com/quarto-dev/quarto-cli/issues/13716)): Fix draft pages showing blank during preview when pre-render scripts are configured.
+- ([#13847](https://github.com/quarto-dev/quarto-cli/pull/13847)): Open graph title with markdown is now processed correctly. (author: @mcanouil)
 
 ### `book`
 

src/project/types/website/website-meta.ts

@@ -506,7 +506,7 @@ function metaMarkdownPipeline(format: Format, extras: FormatExtras) {
       if (renderedEl) {
         // Update the document title
         const el = doc.querySelector(
-          `meta[name="og:site_name"]`,
+          `meta[property="og:site_name"]`,
         );
         if (el) {
           el.setAttribute("content", renderedEl.innerText);

tests/docs/smoke-all/2026/01/06/13847/.gitignore

@@ -0,0 +1,2 @@
+/.quarto/
+**/*.quarto_ipynb

tests/docs/smoke-all/2026/01/06/13847/_quarto.yml

@@ -0,0 +1,17 @@
+project:
+  type: website
+
+website:
+  title: "Quarto CLI {{< var version >}}"
+  open-graph: true
+  navbar:
+    left:
+      - href: index.qmd
+        text: Home
+    right:
+      - icon: github
+        href: https://github.com/
+
+format:
+  html:
+    theme: cosmo

tests/docs/smoke-all/2026/01/06/13847/_variables.yml

@@ -0,0 +1 @@
+version: 1.0.0

tests/docs/smoke-all/2026/01/06/13847/index.qmd

@@ -0,0 +1,13 @@
+---
+title: "PR 13847: open graph metadata"
+_quarto:
+  render-project: true
+  tests:
+    html:
+      ensureHtmlElements:
+        -
+          - 'meta[property="og:site_name"][content*="Quarto CLI 1.0.0"]'
+        - []
+---
+
+This test check that the website title is correctly resolved when used in open graph site name, including when using a shortcode.