René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Passing an escaped wildcard expression to -Path in file-creating cmdlets causes the escaped representation to be used as the literal filename","articleBody":"Note: This seems to affect all file-creating cmdlets - including `\u003e` and `\u003e\u003e` - with the laudable exception of `Set-Content` and `Add-Content`.\r\n\r\nConceptually related: #7999\r\n\r\nSay you want to create a file literally named `file[1].txt`.\r\n\r\nIn order to successfully pass this name to a `-Path` parameter (or `-FilePath` for `-OutFile`), it must be escaped as `` file`[1`].txt ``, because `-Path` parameters interpret their arguments as wildcard expressions.\r\n\r\nWhile such an escaped path is _accepted_, the problem is that _it isn't retranslated into its literal equivalent on file creation_, resulting in the _escaped_ representation being used as the filename; in the example above, you end up with a file literally named `` file`[1`].txt `` instead of the intended `` file[1].txt ``\r\n\r\nThis problem can generally be avoided by passing the filename to the `-LiteralPath` parameter instead, but that is not yet always an option - see #3174 - and, of course, the bug is worth fixing either way.\r\n\r\n# Steps to reproduce\r\n\r\nRun the following Pester tests:\r\n\r\n```powershell\r\nDescribe '-Path file-creation test' {\r\n  BeforeAll { Push-Location TestDrive:\\ }\r\n  AfterAll { Pop-Location }\r\n  It \"Escaped wildcard paths are created as their literal equivalents\" {\r\n   'hi' | Out-File -FilePath 'file`[1`].txt'\r\n    Test-Path -LiteralPath 'file[1].txt' | Should -Be $true\r\n    Test-Path -LiteralPath 'file`[1`].txt' | Should -Be $false\r\n }\r\n}\r\n```\r\n\r\n# Expected behavior\r\n\r\nThe tests should pass.\r\n\r\n# Actual behavior\r\n\r\nThe tests fail, because the actual name of the file created is literally `` file`[1`].txt ``, i.e., the _escaped_ name.\r\n\r\n# Environment data\r\n\r\n```none\r\nPowerShell Core 6.2.0 / Windows PowerShell v5.1\r\n```\r\n","author":{"url":"https://github.com/mklement0","@type":"Person","name":"mklement0"},"datePublished":"2019-04-26T18:23:35.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":12},"url":"https://github.com/9475/PowerShell/issues/9475"}