Issue in R kernel, when more than one line exist in a cell

[mgorjis]

Environment data

• VS Code version: 1.60
• Jupyter Extension version (available under the Extensions sidebar): 2021.8.2041215044
• Python Extension version (available under the Extensions sidebar): v2021.9.1191016588
• OS (Windows | Mac | Linux distro) and version: Windows 10
• Python and/or Anaconda version: 3.7.9
• Type of virtual environment used (N/A | venv | virtualenv | conda | ...): NA
• Jupyter server running: Local | Remote | Local

Expected behaviour

a <- 2 + 3
b <- 4 + 5

Actual behaviour

provides this error when using R kernel
ERROR: Error in parse(text = x, srcfile = src): :1:11: unexpected input
1: a <- 2 + 3
^
Error in parse(text = x, srcfile = src): :1:11: unexpected input
1: a <- 2 + 3
^
Traceback:

Steps to reproduce:

[NOTE: Self-contained, minimal reproducing code samples are extremely helpful and will expedite addressing your issue]

1. XXX

Logs

Output for Jupyter in the Output panel (View→Output, change the drop-down the upper-right of the Output panel to Jupyter)

XXX

[andycraig]

@mgorjis The position of the ^ in the error message, and the highlighting in the screenshot, makes me think that there might be a non-ASCII whitespace character after '3' and '5'. Could you make sure there are no characters after '3' and '5' and try again?

[DonJayamanne]

I'm on a mac, is this because we might be sending CRLF to the R kernel?
@andycraig based on your knowledge does the R kernel support CRLF in the code sent?

[mgorjis]

@andycraig Definitely I have not added any non-ASCII characters to the line. When I save the notebook in VS code, and open it again in jupyter lab, it works completely fine.
If I have a line of code in each cell in VS code, it is working fine. Only if I have two lines in A CELL, I see this weird error.

Thanks

[andycraig]

@mgorjis Thanks for confirming and checking it works in Jupyter Lab.

@DonJayamanne I haven't had a chance to look into this properly yet but Hydrogen had a similar issue with the R kernel and CRLF so you're almost certainly right I'd say. nteract/hydrogen#312

[DonJayamanne]

Duplicate of #4576

[DonJayamanne]

Fixed, it should be in Mondays insiders and next releease