REPL: unexpected behavior with   (non break space) on Windows

[typenoob]

Bug report

Bug description:

Copy " "==" " into Python REPL (the first space is non breakable, you need to generate a new one though), there are two problems I found:

1. In OS built-in terminal, it is always true

Python 3.13.12 (tags/v3.13.12:1cbe481, Feb  3 2026, 18:22:25) [MSC v.1944 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> " "==" "
True
>>> " "==" " # copied
True

2. In Vscode integrated terminal, it was false as expected at first. But if you copied from the REPL then, the non break space somehow has changed to normal space, this is the same behavior with the built-in terminal.

Python 3.13.12 (tags/v3.13.12:1cbe481, Feb  3 2026, 18:22:25) [MSC v.1944 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
Ctrl click to launch VS Code Native REPL
>>> " "==" "  
False
>>> " "==" " # copied
True

On Linux at least Ubuntu, it behave correctly as expected.

Python 3.12.3 (main, Mar  3 2026, 12:15:18) [GCC 13.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> " "==" "
False
>>> " "==" " # copied
False

Based on testing multiple versions, it appears that​ version is not a factor.

CPython versions tested on:

3.13

Operating systems tested on:

Windows

[jonathandung]

How is that an issue with python? I'm pretty sure it's just the Windows operating system converting non-printable characters into printable characters.

[typenoob]

But NodeJS REPL has the correct behavior... on Windows. Why not to improve it?

Welcome to Node.js v24.13.0.
Type ".help" for more information.
> " "==" "
false
> " "==" " // copied
false

[typenoob]

|  欢迎使用 JShell -- 版本 21.0.10
|  要大致了解该版本, 请键入: /help intro

jshell> " "==" "
$1 ==> false

jshell> " "==" "
$2 ==> false

jshell the same.