Extra Spaces Added When Pasting Multi-Line Text in Python 3.13.1

[maoraver]

Bug report

Bug description:

When pasting multi-line text into the Python terminal(using CMD or PowerShell) in Python 3.13.1, extra spaces are being added at the beginning of each line. This issue is specific to Python 3.13.1 and does not occur in earlier versions (e.g., Python 3.9, checked with a friend).

For example, consider the following text copied and pasted into the REPL:
(take the text from here)

print("""
    _    _
   | |  | |
   | |__| | __ _ _ __   __ _ _ __ ___   __ _ _ __
   |  __  |/ _` | '_ \ / _` | '_ ` _ \ / _` | '_ \
   | |  | | (_| | | | | (_| | | | | | | (_| | | | |
   |_|  |_|\__,_|_| |_|\__, |_| |_| |_|\__,_|_| |_|
                        __/ |
                       |___/
""")

CPython versions tested on:

3.13

Operating systems tested on:

Windows

[liranami]

Hi, im the friend, i had the 3.9 version, so i switched to the 3.13.1 to check why in my PC it working and with this new version its not working as expected.

[maoraver]

BTW, this is how the problem looks like:

[cfinnberg]

This also prevents to copy blocks of code, because the indentation does not match previous lines.
In Linux paste works fine.