If you ask if its easy to do then no

Automatically detecting that a text string is a link is not easy/performant. We should at least have some kind of marker to look for.

i.e. a class on a div, a custom url or javascript call we can hook into. Note, the custom javascript or url requires afaik that we open the browser and you can't just use the default embedded one since it won't have the custom listeners defined.

If there is a custom div we can look for we could have a context menu in eclipse that says something like "search for JSF error" or similar that would look and then use the already existing functionallity in eclipse of highlighting console error output and java stack traces.

Those things you can actually already use today - i.e. if that error comes out on the console of the server then clicking on facelets error and java stacktraces already just works.

You can also open the Java Srack Trace view from the console and paste the stacktrace in there and you can do it independent on you having access to the server console.