\Symfony\Component\Yaml\Parser::parse() returns the unchanged value when a 1-liner string which is no valid YAML is passed. Assume this string to be the page title. Thus the following page will work now:
```
---
This is the title
---
# Example page
{{ meta.title }} is going to be "This is the title" - or "%meta.title%" == "This is the title".
```
This allows developers to easily add custom query data to an page URL without the need to check enabled URL rewriting on their own. Since Twigs `link` filter is just an alias for Pico::getPageUrl(), theme designers can do the same with e.g. `{{ "index"|link("foo=bar&baz=42") }}`.
Theme designers, heads up! Don't forget that the result of the `link` filter is never escaped, so the result could contain unescaped ampersands when passing custom query data. You should pass the result to Twigs `escape` filter when using custom query data.
This was dropped without a replacement with Pico 0.9. I checked all changes since Pico 0.8 manually, as far as I can tell there should be no more surprises regarding BC... Thanks @Lomanic for rubbing our nose in the fact that we should check this! I also added the missing changes of Pico 0.9 to changelog.txt
The changelog only provides basic information about the enormous changes introduced with Pico 1.0-beta. Please refer to the (not yet written... 😄) UPGRADE section of the docs for details.
Daniel Rudolf
theshka
Diogo Oliveira de Melo
theshka
Gilbert Pellegrom