cpython/Lib/venv/scripts/nt/activate.bat

@rem This file is UTF-8 encoded, so we need to update the current code page while executing it
@for /f "tokens=2 delims=:." %%a in ('"%SystemRoot%\System32\chcp.com"') do @(
    @set _OLD_CODEPAGE=%%a
)
@if defined _OLD_CODEPAGE (
    @"%SystemRoot%\System32\chcp.com" 65001 > nul
)

@set "VIRTUAL_ENV=__VENV_DIR__"

@if not defined PROMPT @set PROMPT=$P$G

@if defined _OLD_VIRTUAL_PROMPT @set PROMPT=%_OLD_VIRTUAL_PROMPT%
@if defined _OLD_VIRTUAL_PYTHONHOME @set PYTHONHOME=%_OLD_VIRTUAL_PYTHONHOME%

@set "_OLD_VIRTUAL_PROMPT=%PROMPT%"
@set "PROMPT=(__VENV_PROMPT__) %PROMPT%"

@if defined PYTHONHOME @set _OLD_VIRTUAL_PYTHONHOME=%PYTHONHOME%
@set PYTHONHOME=

@if defined _OLD_VIRTUAL_PATH @set PATH=%_OLD_VIRTUAL_PATH%
@if not defined _OLD_VIRTUAL_PATH @set _OLD_VIRTUAL_PATH=%PATH%

@set "PATH=%VIRTUAL_ENV%\__VENV_BIN_NAME__;%PATH%"
@set "VIRTUAL_ENV_PROMPT=__VENV_PROMPT__"

:END
@if defined _OLD_CODEPAGE (
    @"%SystemRoot%\System32\chcp.com" %_OLD_CODEPAGE% > nul
    @set _OLD_CODEPAGE=
)