Special case for SearchPattern on Windows isn't valid

[Rohansi]

Six tests fail on my machine at this line:

zio/src/Zio.Tests/FileSystems/TestFileSystemBase.cs

Line 323 in d15df76

Assert.Equal(AllFiles_txt, other.AllFiles_txt);

other.AllFiles_txt does not contain any of the files with an extension beginning with "txt". Perhaps this behavior was removed from Windows?

Windows 10 version 1709, build 16299.98

[Rohansi]

For clarification, the special case is for search patterns with a three character extension. The results should include any files with an extension starting with those three characters but on my Windows it does not.

[Rohansi]

This behavior is only for filesystems with 8.3 names enabled. Can check with fsutil behavior query disable8dot3 C: in command prompt running as admin.

I think this special case should be removed and filter twice (once by Windows, once in Zio) so we get consistent results.

[xoofx]

I think this special case should be removed and filter twice (once by Windows, once in Zio) so we get consistent results.

If the OS/API has a different behavior based on a machine wide settings, that's likely the right way to fix this...