Autocompletion in the jupyter console running the ark kernel not working

System details:

Positron and OS details:

Distributor ID: Ubuntu
Description: Ubuntu 22.04.5 LTS
Release: 22.04
Codename: jammy

This question is specifically about the ark kernel. Positron is not installed (the ark github repo refers to positron's issue tracker)...

Session details:

Python 3.10.12
R 4.5.1
ark-0.1.220-linux-x64 (downloaded from the release page)

Describe the issue:

The auto-completion in the jupyter console running the ark kernel seems not to be working.

Steps to reproduce the issue:

1. Start the jupyter console with the ark kernel:

jupyter console --kernel ark

2. Load some library (e.g., library(dplyr)
3. Try to trigger auto-completion (e.g., type dplyr:: + Tab key)

No auto-completion pops up.

(Same for running the ark kernel in a jupyter notebook)

Expected or desired behavior:

Auto-completion to work (i.e., in the example above show available objects from the dplyr namespace).

--

Thanks for your time!

Start by reproducing the issue with jupyter console --kernel ark, loading dplyr, and requesting completion after dplyr::; compare the same behavior in a Jupyter notebook. The fix is complete when namespace completions appear in both environments, but the issue names no source files or tests to guide the investigation.