parsing of .env truncates before equal sign

[maximiliank]

Type: Bug

Behaviour

Expected vs. Actual

Environment settings in the .env file which contain an equal sign in the value are truncated, e.g.

ASAN_OPTIONS="detect_leaks=0"

ends up as ASAN_OPTIONS=detect_leaks in the environemt inside the terminal. I would expect that the complete value is passed as an environment variable. The same happens if I remove the quotes.

Steps to reproduce:

1. Create an .env file with the following content

ASAN_OPTIONS="detect_leaks=0"

2. Start a terminal
3. Check the environment variables

$ env | grep ASAN_OPTIONS
ASAN_OPTIONS=detect_leaks

Diagnostic data

• Python version (& distribution if applicable, e.g. Anaconda): 3.9.18
• Type of virtual environment used (e.g. conda, venv, virtualenv, etc.): Venv
• Value of the python.languageServer setting: Default

Output for Python in the Output panel (View→Output, change the drop-down the upper-right of the Output panel to Python)

2024-01-26 11:05:45.398 [info] Experiment 'pythonaacf' is active
2024-01-26 11:05:45.398 [info] Experiment 'pythonRecommendTensorboardExtcf' is active
2024-01-26 11:05:45.398 [info] Experiment 'pythonREPLSmartSend' is active
2024-01-26 11:05:45.398 [info] Experiment 'pythonSurveyNotificationcf' is active
2024-01-26 11:05:45.398 [info] Experiment 'pythonTerminalEnvVarActivation' is active
2024-01-26 11:05:45.398 [info] Experiment 'pythonTestAdapter' is active
2024-01-26 11:05:45.398 [info] Default formatter is set to ms-python.black-formatter for workspace <folder>
2024-01-26 11:05:45.398 [info] Test server listening.
2024-01-26 11:05:45.398 [info] Python interpreter path: ./.venv/bin/python
2024-01-26 11:05:45.878 [info] Send text to terminal: echo /bin/bash
2024-01-26 11:05:47.143 [info] > . ./.venv/bin/activate && echo 'e8b39361-0157-4923-80e1-22d70d46dee6' && python ~/.vscode-server/extensions/ms-python.python-2023.22.1/pythonFiles/printEnvVariables.py
2024-01-26 11:05:47.143 [info] shell: bash
2024-01-26 11:05:47.189 [info] > /bin/python3 ~/.vscode-server/extensions/ms-python.python-2023.22.1/pythonFiles/printEnvVariables.py
2024-01-26 11:05:47.189 [info] shell: bash
2024-01-26 11:05:47.217 [info] Send text to terminal: /bin/python3 <HOME>/.vscode-server/extensions/ms-python.python-2023.22.1/pythonFiles/printEnvVariablesToFile.py <HOME>/.vscode-server/extensions/ms-python.python-2023.22.1/pythonFiles/deactivate/bash/envVars.txt
2024-01-26 11:05:47.548 [info] Starting Pylance language server.

User Settings

languageServer: "Pylance"

testing
• pytestArgs: "<placeholder>"
• pytestEnabled: true

Extension version: 2023.22.1
VS Code version: Code 1.85.2 (8b3775030ed1a69b13e4f4c628c612102e30a681, 2024-01-18T06:40:10.514Z)
OS version: Windows_NT x64 10.0.19045
Modes:
Remote OS version: Linux x64 4.18.0-513.9.1.el8_9.x86_64

System Info

Item	Value
CPUs	11th Gen Intel(R) Core(TM) i7-1185G7 @ 3.00GHz (8 x 2995)
GPU Status	2d_canvas: enabled canvas_oop_rasterization: enabled_on direct_rendering_display_compositor: disabled_off_ok gpu_compositing: enabled multiple_raster_threads: enabled_on opengl: enabled_on rasterization: enabled raw_draw: disabled_off_ok video_decode: enabled video_encode: enabled vulkan: disabled_off webgl: enabled webgl2: enabled webgpu: enabled
Load (avg)	undefined
Memory (System)	31.69GB (18.18GB free)
Process Argv	--crash-reporter-id 6958cdb7-8098-4f70-9b5c-0413382c0a56
Screen Reader	no
VM	0%

Item	Value
Remote	SSH:
OS	Linux x64 4.18.0-513.9.1.el8_9.x86_64
CPUs	Intel(R) Xeon(R) Gold 6143 CPU @ 2.80GHz (64 x 2800)
Memory (System)	251.03GB (237.00GB free)
VM	0%

A/B Experiments

vsliv368cf:30146710
vspor879:30202332
vspor708:30202333
vspor363:30204092
vswsl492cf:30256860
vscod805cf:30301675
binariesv615:30325510
vsaa593cf:30376535
py29gd2263:30899288
c4g48928:30535728
azure-dev_surveyone:30548225
2i9eh265:30646982
962ge761:30933248
pythongtdpath:30769146
welcomedialog:30910333
pythonidxpt:30866567
pythonnoceb:30805159
asynctok:30898717
pythontestfixt:30902429
pythonregdiag2:30936856
pyreplss1:30897532
pythonmypyd1:30879173
pythoncet0:30885854
pythontbext0:30879054
dsvsc016:30899300
dsvsc017:30899301
dsvsc018:30899302
dsvsc019a:30933241

[karrtikr]

Closing as duplicate of microsoft/vscode#197603. I encourage you to interact with the other issue, as that could help with prioritizing it.

[shjohnson-pi]

As a workaround, you can set "python.envFile": "" in workspace/.vscode/settings.json and then reload the window. That should stop VS code from looking at the .env file.
Reference: https://code.visualstudio.com/docs/python/environments#_environment-variables

[maximiliank]

Actually, I need it when debugging tests from python. The extension is build with sanitizers. This implies that the sanitizer library has to be LD_PRELOADed before starting the debugging session. Since the leak sanitizer detects also memory leaks within in python I have to disable leak detection. My .env file looks like this:

LD_PRELOAD=/lib64/libasan.so.8
# Disable leak detection from python modules since asan detects leaks when numpy is loaded
ASAN_OPTIONS=detect_leaks=0

and when debugging python everything works as expected. But the terminal is not useable since the trailing = is cut out, hence it complains AddressSanitizer: ERROR: expected '=' in ASAN_OPTIONS and no command in the terminal works. Which is clear, since libasan.so.8 is preloaded and the configuration for ASAN_OPTIONS is incomplete.