Locals-aware completions for R not working in paused browser()

[danielmonsurate]

System details:

Positron and OS details:

Session details:

Positron Version: 2025.12.1 (system setup) build 4
Code - OSS Version: 1.106.0
Commit: f70a9bc
Date: 2025-12-05T21:14:02.697Z
Electron: 37.7.0
Chromium: 138.0.7204.251
Node.js: 22.20.0
V8: 13.8.258.32-electron.0
OS: Windows_NT x64 10.0.26100

Describe the issue:

When paused at a browser() prompt in Positron, autocompletion for local variables does not work. The completion list shows “No suggestions” for locals.

Steps to reproduce the issue:

1. Start an R session in Positron.

2. Run:

    f <- function() {
      df <- data.frame(a = 1, b = 2, c = 3)
      browser() 
    }
    f()
   

3. At Browse[n]>, type df$ and press Ctrl+Space.

Result
“No suggestions” in the completion list.

Expected or desired behaviour:

When paused in browser(), typing df$ and pressing Ctrl+Space should show column names from the local data frame in the current debug frame.

Actual behaviour

Completions work for:

Globals (df$ in global env)
Package functions

…but not for locals in the paused frame. The suggestion list says “No suggestions”.

[testlabauto]

Hi @danielmonsurate,

Thanks for the clear bug report. I had no trouble reproducing. Moving to triage for prioritization.