Link previews fetch a page's OpenGraph title and description, and
Opengraph::Metadata strips tags from both before the values reach the
browser. When a field consists entirely of a markup tag, stripping
leaves it blank, the metadata fails its presence validation, and the
unfurl endpoint returns no content, so no preview is produced.
Add regression tests at the model and controller layers that pin this:
a title or description made only of a markup tag is stripped to blank
and rejected, and the endpoint answers 204. The existing sanitize tests
only cover fields that keep non-blank text after stripping, so this
blank-and-rejected path was previously untested.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0186eyzivcTn6wqjEE4Wnxdt
Pasting a link builds the preview by interpolating the unfurled metadata
into an HTML string. The image URL went into src="..." unescaped, so a
page whose og:image carries a double quote closes the attribute early and
everything after it becomes attributes on the preview's img element.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0186eyzivcTn6wqjEE4Wnxdt
Rosa Gutierrez
Kevin McConnell