# Unreleased changes
Changes merged into `development` that have not yet been released to `main`.
---
## `mdcms build` patches `
` with sitename
`mdcms build` now rewrites the `` tag in `index.html` with the value of `sitename` from `config.yml`. Previously the tag was hardcoded (`MD-CMS`) in older templates, or blank in the starter template, so link previews in WhatsApp, Slack, and other crawlers that read static HTML showed the wrong name.
---
## Untranslated posts now visible in all categories
**Status:** On `development`, pending release.
### What was broken
When the category system is enabled, a post file without a category suffix (e.g. `posts/my-post.md`) was silently assigned to the default category only. Switching to any other category caused those posts to disappear from the nav and from `posts-*` tag listings — even though no translated version existed. If you wrote posts without a language suffix, they simply vanished the moment a visitor switched category.
Pages without a category suffix are unaffected: they continue to be assigned to the default category, which is the correct behaviour for pages.
### What it does now
Posts without a category suffix are treated as uncategorised — meaning they appear in every category. A post called `my-post.md` now shows up regardless of which category is active. A post called `my-post.en.md` still appears only in the `en` category as before.
Mixed situations work as expected: if you have both `my-post.md` and `my-post.nb.md`, the Norwegian variant is shown when the `nb` category is active, and the bare `my-post.md` is shown for every other category.
### What changes in the build output
After rebuilding a site with `mdcms build`, affected post entries in `nav.yml` gain an `uncategorized: true` field:
```yaml
- file: posts/my-post.md
title: My Post
sort: 100
uncategorized: true
```
In `search.json`, these entries carry `"category": null` instead of the default category code. This is what tells the renderer to include them universally.
A rebuild is required for existing sites to pick up the change.
---
## Fix: category-variant pages fail to load on servers with SPA routing (e.g. Cloudflare Pages)
When a site uses category-suffixed page files (e.g. `page.current.md`) and is hosted on a server configured with SPA fallback routing (serving `index.html` with HTTP 200 for any unknown path), the renderer's `fetchPageFile` mistook the HTML fallback for a found markdown file. It returned `index.html` content instead of falling through to try the `.current.md` variant. The page rendered the raw HTML of `index.html` as markdown, showing the `` text (`sitename`) in the content area.
`fetchPageFile` now checks the `Content-Type` response header and rejects any response with `text/html`, continuing to the next candidate URL instead.
---
## Fix: stale service worker not removed when `pwa: no`
`index.html` unconditionally registers `service-worker.js` on every page load. When a site switched from `pwa: yes` to `pwa: no`, `mdcms build` stopped generating a new service worker, but the old one remained active in browsers that had visited the site before. The stale worker continued to serve cached responses from the old build.
`mdcms build` now writes a self-unregistering `service-worker.js` when `pwa: no`. On the visitor's next page load, the browser installs this stub worker, which immediately unregisters itself and evicts any previously cached content. `manifest.json` is also removed if present.
---
## Fix: `config.yml` YAML parse errors now abort the build with a clear message
A malformed `config.yml` (e.g. a stray tab character, which YAML forbids as a token starter) previously caused `read_config` to silently return an empty dict. The build would proceed with no config — categories disabled, no default category code — producing a broken `nav.yml` with wrong filenames and missing `variants` fields, so category-variant pages would not appear in the sidebar.
`read_config` now raises `ClickException` on both `OSError` and `yaml.YAMLError`, aborting the build with a descriptive error message instead of continuing silently with an empty config.