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Right Arrow Complete failure, environment hang #4930
Description
Prerequisites
- Write a descriptive title.
- Make sure you are able to repro it on the latest released version
- Search the existing issues, especially the pinned issues.
Exception report
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Please report on GitHub: https://github.com/PowerShell/PSReadLine/issues/new?template=Bug_Report.yaml
Thank you!
### Environment
PSReadLine: 2.3.6+d2e770f93b7a53d8660a6402eb29d1ae1c35e767
PowerShell: 7.5.3
OS: Microsoft Windows 10.0.26100
BufferWidth: 120
BufferHeight: 30
Last 29 Keys:
c o d e Spacebar Backspace Backspace Backspace Backspace Backspace c d Spacebar r e p o Tab RightArrow RightArrow RightArrow RightArrow RightArrow RightArrow Tab RightArrow RightArrow RightArrow RightArrow
### Exception
System.ArgumentOutOfRangeException: startIndex cannot be larger than length of string. (Parameter 'startIndex')
at System.String.ThrowSubstringArgumentOutOfRange(Int32 startIndex, Int32 length)
at System.String.Substring(Int32 startIndex)
at Microsoft.PowerShell.PSConsoleReadLine.AcceptSuggestion(Nullable`1 key, Object arg)
at Microsoft.PowerShell.PSConsoleReadLine.ForwardChar(Nullable`1 key, Object arg)
at Microsoft.PowerShell.PSConsoleReadLine.ProcessOneKey(PSKeyInfo key, Dictionary`2 dispatchTable, Boolean ignoreIfNoAction, Object arg)
at Microsoft.PowerShell.PSConsoleReadLine.InputLoop()
at Microsoft.PowerShell.PSConsoleReadLine.ReadLine(Runspace runspace, EngineIntrinsics engineIntrinsics, CancellationToken cancellationToken, Nullable`1 lastRunStatus)Screenshot
Environment data
PS Version: 7.5.3
PS HostName: ConsoleHost (Windows Terminal)
PSReadLine Version: 2.3.6
PSReadLine EditMode: Windows
OS: 10.0.26100.1 (WinBuild.160101.0800)
BufferWidth: 142
BufferHeight: 60Steps to reproduce
Open new windows terminal
(was planning to cd into my repo and start vs code)
cd (was pressing right arrow to complete the path that was presented)
(system hang and crash report issued)
Expected behavior
Select right arrow and cd into the path.
Actual behavior
crash typed the path from memory
Activity
daxian-dbw commentedon Oct 22, 2025
Eric Marquez (@ebmarquez) I suspect that it has something to do with the theme you are using. Can you consistently reproduce this issue? If so, can you please try in a session without the theme (maybe starting the session by
pwsh -noprofile) and see if you can reproduce in that environment?