Bug report

Consider the following batch script:

python -m venv venv
CALL venv\Scripts\activate.bat
REM spam
CALL deactivate.bat
REM eggs

The expected output is:

W:\>python -m venv venv
W:\>CALL venv\Scripts\activate.bat
(venv) W:\>REM spam
(venv) W:\>CALL deactivate.bat
W:\>REM eggs

The actual output is:

W:\>python -m venv venv
W:\>CALL venv\Scripts\activate.bat

This is caused by @echo off at the beginning of both scripts that need to be undone after calling them:

python -m venv venv
CALL venv\Scripts\activate.bat
@ECHO ON
REM spam
CALL deactivate.bat
@ECHO ON
REM eggs

Your environment

CPython versions tested on: Python 3.10.2 (tags/v3.10.2:a58ebcc, Jan 17 2022, 14:12:15) [MSC v.1929 64 bit (AMD64)]