I just deployed v0.0 of this feature.
First 5 links are expanded by default, the rest require an extra click.
https://github.com/discourse/discourse/commit/6d10812b269e4ca51dcebba27fe9ced6a7cbf7d1
I will continue refining this tomorrow. In particular I want to strip out all outgoing links that appear exactly the same way in the post. That way completely redundant links will be removed.
So, for example if a link to “my awesome topic” exists and “my awesome topic” is the name of the topic, it will be stripped.
Me linking to:
Would not result in a link at the bottom (like it does now)
However, if I linked to this which is partially unresolved, it would show up.
Ordering wise I am considering giving priority to incoming over outgoing, which is the reverse of what we are doing now.