"#region" with trailing word character (ex. _) triggers an error "#region is missing corresponding #endregion"

[kurtschelfthout]

Any comment that contains the word "region" triggers an error "#region is missing corresponding #endregion"

Also I can't find a way to turn region checking off entirely ( e.g. using "python.analysis.diagnosticSeverityOverrides"). Nothing relevant is listed in the settings.

Environment data

• Language Server version: Pylance language server 2022.12.20 (pyright 621d886b) starting
• OS and version: Windows 10
• Python version (& distribution if applicable, e.g. Anaconda): 3.9

Code Snippet

def foo() -> None:
    # region_name
    pass

Repro Steps

Just paste that code in a py file, see the spurious error show up.

Logs

Not relevant here I reckon

[return42]

IDK if it is related to pylance, but I have this issue when using pyright.

[rchiodo]

Thanks for the bug. I believe I've found the root cause, so we should be able to fix this soon.

[heejaechang]

This issue has been fixed in prerelease version 2023.1.11, which we've just released. You can find the changelog here: CHANGELOG.md

[taldcroft]

I'm seeing this again with the latest releases of VS code 1.77.1 and Pylance v2023.4.20 on Mac OSX.

[debonte]

@taldcroft, @HsuanTingLu, that's #3857.

I changed the title of this issue to better distinguish between the two.