The cmdlet compares the name of every item that the enumeration returns with the pattern again, and it built that comparison with the wildcard syntax of PowerShell. A bracket then began a character class, so Report[1].txt was returned by the enumeration, which treats a bracket as itself, and dropped by the comparison, and a file with brackets in its name could not be found for its name with -Filter, which Get-ChildItem does. The documentation names only * and ? as wildcards, so a bracket and a backtick now stand for themselves in the comparison.
The regression test fails without the fix in all four configurations. The probe also showed that AlphaFS compares only the long name, so the test for *.htm guards the documented contract and no 8.3 behavior. The page of the cmdlet names the rule and the help file is generated again.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Co-authored-by: AI Assistant <ai@example.com>
Raimund Andree