Black formatter : src error

[Laufron]

Issue Type: Bug

my settings are the following :
"python.formatting.provider": "black",
"python.formatting.blackPath": "C:/SafApp/Python/Python3.10-64/Scripts/black.exe",
"python.formatting.blackArgs": [
"--preview"
],
"[python]": {
"editor.defaultFormatter": null
},
"editor.formatOnSave": true,

black works perfectly when used by command line, but the command launched by the formatOnSave seems wrong to me. As a result black doesn't format my files on save.

when saving the file pandas_loc.py :
Output tab [Python]:

C:/SafApp/Python/Python3.10-64/Scripts/black.exe --preview --diff --quiet .\pandas_loc.py.40996521066352b2ddb99ea0eda2de46.tmp
cwd: .
... and my file is not formatted

i tried the command in the vscode integrated terminal and got :

Usage: black [OPTIONS] SRC ...
Try 'black -h' for help.

Error: Invalid value for 'SRC ...': Path '.\pandas_loc.py.40996521066352b2ddb99ea0eda2de46.tmp' does not exist.

I guess the tmp file should be the output but black is trying to format the unexisting tmp file.
Hope you can help

Extension version: 2022.0.1814523869
VS Code version: Code 1.64.2 (f80445acd5a3dadef24aa209168452a3d97cc326, 2022-02-09T22:02:28.252Z)
OS version: Windows_NT x64 10.0.19042
Restricted Mode: No

System Info

Item	Value
CPUs	11th Gen Intel(R) Core(TM) i5-11500H @ 2.90GHz (12 x 2918)
GPU Status	2d_canvas: enabled gpu_compositing: enabled multiple_raster_threads: enabled_on oop_rasterization: enabled opengl: enabled_on rasterization: enabled skia_renderer: enabled_on video_decode: enabled vulkan: disabled_off webgl: enabled webgl2: enabled
Load (avg)	undefined
Memory (System)	15.73GB (6.07GB free)
Process Argv	--crash-reporter-id 2b922bf5-16af-4ccd-bc73-c682c088cd49
Screen Reader	no
VM	0%

A/B Experiments

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helix:30440343

[karthiknadig]

@Laufron This occurs because we try to figure out the formatting changes on a file, using a temp file. If the temp file creation failed for some reason, then you run into this error.

We have been working on creating black formatter extension that will handle this differently. This issue will be addressed by that extension when it gets released. If you want to try it out, you can find it here. psf/black#2883

[karthiknadig]

Should be addressed by #17918