Remove extra error metadata that appears in the stacktraces for Clojure 1.10

[bbatsov]

In Clojure 1.10 there's some extra info displayed in the stackframes. See this:

The maps with the error info and the spec failure are basically white noise and should probably be removed, although we might want to extract some info from the spec failure metadata.

See also the related clojure-emacs/cider#2443

@jeffvalk @clojure-emacs/cider Any thoughts/suggestions here?

[alexander-yakushev]

I'm all for it 😄

Can we perhaps call ex-triage if running Clojure 1.10+?

[bbatsov]

Yeah, I think that's a good idea. In general there's a bit of work to be done with respect to error handling as after 1.10 we still have no compilation highlights and you can no longer click on error messages in the REPL. Probably there we should move to getting the info from *e or the middleware response instead of parsing strings that can change. Anyways, that's not directly related to this ticket.

[suvratapte]

Hi @bbatsov,

I was able to remove the white noise from clojure.spec.
Attaching a screenshot of cider-error when evaluating (let [1]) with Clojure 1.10.1.

What information from clojure.spec.alpha do you think is useful? I think that :pred is certainly useful. How should we display it?

From clojure.error, I think :phase and :symbol are useful. What do you think?

@Cartmanishere helped me with this. 😄

[bbatsov]

Thanks for tackling this! 🙇

What information from clojure.spec.alpha do you think is useful? I think that :pred is certainly useful. How should we display it?

My original intention was to hide all the info from the maps and potentially show the important info in some way that fits better the UI.
Potentially all the info in the error maps is useful, but the real problem is that those maps don't fit very well the stack frames. I'm wondering if we can just add some button that people can press to expand the data in the stacktrace maps.

[suvratapte]

Hmm, I agree. I will think about where it can go in the UI.
Do we have any UI mocks for this? Or other places where we use such buttons?

[bbatsov]

You can see such a button in the *nrepl-messages* buffer.

[suvratapte]

@bbatsov : I looked at the buttons in *nrepl-messages* buffer.
Would a toggle (like the ones here: Hide: Clojure Java REPL Tooling Duplicates) work? In my opinion, a toggle would fit better than the expanding buttons on *nrepl-messages* buffer.
I don't know what the name of the toggle should be though. Spec maybe?

[bbatsov]

I think that's a great idea! We should have thought of this earlier.

Spec maybe?

Sounds good!

[suvratapte]

Cool. Will begin work on this after 3rd March.