Line with multiple whitepaces in Python REPL gets written over #8000

New Issue

claunia · 2026-01-31T01:18:10Z

claunia commented

2026-01-31 01:18:10 +00:00

Originally created by @vangorden on GitHub (May 7, 2020).

Environment

Windows build number: 10.0.19624.0
Windows Terminal version (if applicable): 0.11.1251.0 (this issue existed in previous versions as well)

Any other software?
WSL
Python

Steps to reproduce

Open a Python REPL from within WSL by entering python.
Enter a character followed by a space and another character followed by a space, then left arrow back to beginning of line. >>> s s s
Now enter some new characters.

Expected behavior

New characters should be inserted between existing characters pushing those that come after forward.

Actual behavior

Existing characters are written over by new characters.

Observations

I've only observed this behavior through WSL, it does not seem to be present in Powershell so this may be an issue with WSL.
It appears to be related to having more than one space character in the line.

Originally created by @vangorden on GitHub (May 7, 2020).   # Environment ```none Windows build number: 10.0.19624.0 Windows Terminal version (if applicable): 0.11.1251.0 (this issue existed in previous versions as well) Any other software? WSL Python ``` # Steps to reproduce Open a Python REPL from within WSL by entering `python`. Enter a character followed by a space and another character followed by a space, then left arrow back to beginning of line. `>>> s s s` Now enter some new characters. # Expected behavior New characters should be inserted between existing characters pushing those that come after forward. # Actual behavior Existing characters are written over by new characters. # Observations I've only observed this behavior through WSL, it does not seem to be present in Powershell so this may be an issue with WSL. It appears to be related to having more than one space character in the line.

claunia added the Needs-Triage Needs-Tag-Fix Needs-Attention labels 2026-01-31 01:18:11 +00:00

claunia closed this issue

2026-01-31 01:18:11 +00:00

claunia commented

2026-01-31 01:18:12 +00:00

@zadjii-msft commented on GitHub (May 7, 2020):

Hmm, curious, I can't seem to repro this.

Maybe there's something else about your WSL environment that's causing this. Which version of python are you running? Which linux distro? What shell are you using, and have you done anything to configure that shell?

What's the output of stty -a both straight from the shell, and from the python REPL?

Does this repro in the vintage console window, or only in Windows Terminal?

@zadjii-msft commented on GitHub (May 7, 2020): Hmm, curious, I can't seem to repro this. ![image](https://user-images.githubusercontent.com/18356694/81319657-95ea4680-9055-11ea-8833-300d3510d017.png) Maybe there's something else about your WSL environment that's causing this. Which version of `python` are you running? Which linux distro? What shell are you using, and have you done anything to configure that shell? What's the output of `stty -a` both straight from the shell, and from the python REPL? ![image](https://user-images.githubusercontent.com/18356694/81319953-0c874400-9056-11ea-981f-7f2828f18d9e.png) Does this repro in the vintage console window, or only in Windows Terminal?

claunia commented

2026-01-31 01:18:12 +00:00

@vangorden commented on GitHub (May 7, 2020):

Thanks for looking at this!

Linux Distro: Ubuntu 20.04 LTS
Shell: zsh
Python versions: 2.7.17 and 3.7.6

Actually I think I just found the culprit in my .zshrc
export TERM=xterm-color

Removing this has resolved the issue for me, so I'll go ahead and close this.

@vangorden commented on GitHub (May 7, 2020): Thanks for looking at this! Linux Distro: Ubuntu 20.04 LTS Shell: zsh Python versions: 2.7.17 and 3.7.6 ![image](https://user-images.githubusercontent.com/8635099/81321709-caef9c80-9047-11ea-9600-254a07b2618f.png) Actually I think I just found the culprit in my .zshrc `export TERM=xterm-color` Removing this has resolved the issue for me, so I'll go ahead and close this.