Tab completion not working in Positron

[vladimirobucina]

Hi, I've realised tab completion doesn't work inside Positron for R6 classes.

Here some more info:

• R version: 4.4.3
• Positron version: 2024.12.0 (Universal) build 41
• Operating System: macOS Sequoia 15.3.1

Btw, I'm using Air.

Related issues: #298, #299

Reproducible example:

library(R6)
AC <- R6Class("AC",
    public = list(
        x = 1
    )
)

a <- AC$new()

# Press <tab> below
a$

[wch]

Thanks, I've also filed this at posit-dev/positron#6699.