cmd/go,x/mod/module: add COM0, LPT0 exclusion for allowed file names

[matloob]

We need to add COM0 and LPT0 to badWindowsNames in x/mod/module/module.go, but we should also do an analysis to make sure no one's affected, or to send PRs to affected modules to rename files whose name before the extension is COM0 or LPT0.

Steps:

• Fix cmd/go,x/mod/module: missing exclusion for COM0, LPT0 for embedded file names #66625 by adding COM0 and LPT0 to badWindowsNames
• Do the analysis on public go code and take action if needed.

[gopherbot]

Change https://go.dev/cl/583836 mentions this issue: module: add COM0 and LPT0 to badWindowsNames

[gopherbot]

Change https://go.dev/cl/584335 mentions this issue: cmd: vendor golang.org/x/mod@6686f41

[bjorndm]

Please look at #67245 . It is debatable if these two file names are really reserved or not on Windows.

[matloob]

Oh interesting. Let's wait to get more information about whether they're reserved.

[matloob]

I'm reverting the change. Closing this for now. We'll open a new issue if conclusive evidence is provided that those files are indeed not allowed on windows.

[qmuntal]

I'm reverting the change. Closing this for now. We'll open a new issue if conclusive evidence is provided that those files are indeed not allowed on windows.

The docs have been updated. COM0 and LPT0 are not reserved: MicrosoftDocs/win32@4fde3c1.