Don't write spoiler text into og:description and twitter:description meta data

[stefan-scholl]

Requirements

• This is a feature request and not a bug report. Otherwise, please create a new bug report instead.
• Please check to see if this request (or a similar one) already exists.
• It's a single feature. Please don't request multiple features in one issue.

Describe the feature you'd like

When you write a text post and the text starts with a spoiler, with correct markup, you need to be careful when you are sharing it on social media.

The text gets written into the meta elements of the HTML head with name="og:description" and name="twitter:description". This metadata gets used by many sites to provide a preview for a link.

Maybe change the whole spoiler content to just “SPOILER.”

It borders on a bug, but it doesn't affect Lemmy itself, and a user often has other options to prevent a preview. If they are aware of the problem.