Cursor appending characters when code is run from R scripts

Bug Reports
1

Describe the Bug

When running any line using cmd+enter from a .R, .Rmd, or .qmd script using the R extension, cursor appends “00~” and “01” to the beginning and end of the command, respectively.

Steps to Reproduce

  1. Create an R script file (.R)
  2. Add a simple command like print("test")
  3. Use Cmd+Enter to run the line
  4. Error: Error: unexpected numeric constant in "print("test")01"

Expected Behavior

The command should run in the interactive R terminal without appending any additional characters

Screenshots / Screen Recordings

Screenshot 2025-06-18 at 7.39.58 PM.png
Screenshot 2025-06-18 at 7.39.58 PM.png1416×1412 45.9 KB

Operating System

MacOS

Current Cursor Version (Menu → About Cursor → Copy)

Version: 1.1.3 (Universal)
VSCode Version: 1.96.2
Commit: 979ba33804ac150108481c14e0b5cb970bda3260
Date: 2025-06-15T06:37:17.379Z
Electron: 34.5.1
Chromium: 132.0.6834.210
Node.js: 20.19.0
V8: 13.2.152.41-electron.0
OS: Darwin arm64 24.5.0

Additional Information

  • This only happens when running from script files with Cmd+Enter
  • Interactive R terminal works fine
  • Same commands run correctly in RStudio
  • This breaks R script development workflow

Does this stop you from using Cursor

Yes - Cursor is unusable