René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"`New-Guid -Empty` ignores an explicit `$false` value","articleBody":"### Prerequisites\n\n- [x] Write a descriptive title.\n- [x] Make sure you are able to repro it on the [latest released version](https://github.com/PowerShell/PowerShell/releases)\n- [x] Search the existing issues.\n- [x] Refer to the [FAQ](https://github.com/PowerShell/PowerShell/blob/master/docs/FAQ.md).\n- [x] Refer to [Differences between Windows PowerShell 5.1 and PowerShell](https://learn.microsoft.com/powershell/scripting/whats-new/differences-from-windows-powershell).\n\nThis is one of many instances of a shipped command that doesn't behave correctly when a switch parameter is explicitly passed a `$false` value.\n\nFor context, see:\n\n- https://github.com/PowerShell/PowerShell/issues/25242\n\n### Steps to reproduce\n\n```powershell\nNew-Guid -Empty:$false\n\n# Equivalent, with hash table splatting:\n$params = @{ Empty = $false }\nNew-Guid @params\n```\n\n### Expected behavior\n\n`New-Guid` emits a non-empty `[guid]` instance. For example:\n\n```\nGuid\n----\nd2a83da7-6092-4c06-b8de-3b9aadbd8c94\n```\n\n### Actual behavior\n\nThe `$false` value is ignored and an empty `[guid]` instance is emitted.\n\n```\nGuid\n----\n00000000-0000-0000-0000-000000000000\n```\n\n`New-Guid` uses the selected parameter set name (`Empty`), which is based on the presence of the switch parameter (_not_ its value), to determine the behavior.\n\nhttps://github.com/PowerShell/PowerShell/blob/f1943592a04d755e60400c069b6e37fb2fd6eb31/src/Microsoft.PowerShell.Commands.Utility/commands/utility/NewGuidCommand.cs#L52\n\nBehavior should be determined by the value of the `Empty` property instead.\n\n### Environment data\n\n```powershell\nName                           Value\n----                           -----\nPSVersion                      7.6.0-preview.3\nPSEdition                      Core\nGitCommitId                    7.6.0-preview.3\nOS                             Microsoft Windows 10.0.19045\nPlatform                       Win32NT\nPSCompatibleVersions           {1.0, 2.0, 3.0, 4.0, 5.0, 5.1…}\nPSRemotingProtocolVersion      2.3\nSerializationVersion           1.1.0.1\nWSManStackVersion              3.0\n```","author":{"url":"https://github.com/surfingoldelephant","@type":"Person","name":"surfingoldelephant"},"datePublished":"2025-04-03T10:49:07.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":8},"url":"https://github.com/25276/PowerShell/issues/25276"}