The following links don't work within blockquotes, though I would expect them to work since they work outside of blockquotes (and they work in other implementations like dingus and github). The spec seems to imply that the leading > should be deleted and the paragraphs treated like they normally would.
> [foo
> bar]
[foo bar]: http://example.com
> [foo][bar
> baz]
[bar baz]: http://example.com
Inline links seem to work OK:
> [foo
> bar](http://example.com)
Tested latest master (3c9cdda).
cc #301 which is kinda similar.