René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Group-Object: StringBuilder parses value as format string","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\n### Steps to reproduce\n\n`Group-Object` in PowerShell 7.3.10 and below is able to group strings containing `{` and `}` characters.\r\n\r\nIn PowerShell 7.4 this fails.\n\n### Expected behavior\n\n```console\nPS\u003e '}' | Group-Object\r\n\r\nCount  Name    Group\r\n-----  ----    -----\r\n    1  }       {}}\n```\n\n\n### Actual behavior\n\n```console\nPS\u003e '}' | Group-Object\r\nGroup-Object: Input string was not in a correct format. Failure to parse near offset 1. Unexpected closing brace without a corresponding opening brace.\n```\n\n\n### Error details\n\n```console\nException             :\r\n    Type       : System.FormatException\r\n    TargetSite :\r\n        Name          : ThrowFormatInvalidString\r\n        DeclaringType : System.ThrowHelper, System.Private.CoreLib, Version=8.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e\r\n        MemberType    : Method\r\n        Module        : System.Private.CoreLib.dll\r\n    Message    : Input string was not in a correct format. Failure to parse near offset 1. Unexpected closing brace without a corresponding opening brace.\r\n    Source     : System.Private.CoreLib\r\n    HResult    : -2146233033\r\n    StackTrace :\r\n   at System.Text.StringBuilder.AppendFormatHelper(IFormatProvider provider, String format, ReadOnlySpan`1 args)\r\n   at Microsoft.PowerShell.Commands.GroupInfo.BuildName(List`1 propValues)\r\n   at Microsoft.PowerShell.Commands.GroupObjectCommand.DoOrderedGrouping(OrderByPropertyEntry currentObjectEntry, Boolean noElement, List`1 groups, Dictionary`2 groupInfoDictionary, OrderByPropertyComparer\r\norderByPropertyComparer)\r\n   at Microsoft.PowerShell.Commands.GroupObjectCommand.EndProcessing()\r\n   at System.Management.Automation.CommandProcessorBase.Complete()\r\nCategoryInfo          : NotSpecified: (:) [Group-Object], FormatException\r\nFullyQualifiedErrorId : System.FormatException,Microsoft.PowerShell.Commands.GroupObjectCommand\r\nInvocationInfo        :\r\n    MyCommand        : Group-Object\r\n    ScriptLineNumber : 1\r\n    OffsetInLine     : 7\r\n    HistoryId        : 54\r\n    Line             : '}' | Group-Object\r\n    Statement        : Group-Object\r\n    PositionMessage  : At line:1 char:7\r\n                       + '}' | Group-Object\r\n                       +       ~~~~~~~~~~~~\r\n    InvocationName   : Group-Object\r\n    CommandOrigin    : Internal\r\nScriptStackTrace      : at \u003cScriptBlock\u003e, \u003cNo file\u003e: line 1\n```\n\n\n### Environment data\n\n```powershell\nName                           Value\r\n----                           -----\r\nPSVersion                      7.4.0\r\nPSEdition                      Core\r\nGitCommitId                    7.4.0\r\nOS                             Microsoft Windows 10.0.19045\r\nPlatform                       Win32NT\r\nPSCompatibleVersions           {1.0, 2.0, 3.0, 4.0…}\r\nPSRemotingProtocolVersion      2.3\r\nSerializationVersion           1.1.0.1\r\nWSManStackVersion              3.0\n```\n\n\n### Visuals\n\n_No response_","author":{"url":"https://github.com/chrisdent-de","@type":"Person","name":"chrisdent-de"},"datePublished":"2023-12-13T13:13:20.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":3},"url":"https://github.com/20914/PowerShell/issues/20914"}