Exception in a continuation prompt context with `PredictionSource` as `HistoryAndPlugin` and `PredictionViewStyle` as `ListView`

[lewis-yeung]

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

### Environment
PSReadLine: 2.2.5
PowerShell: 7.2.4
OS: Microsoft Windows 10.0.22000
BufferWidth: 110
BufferHeight: 45

Last 94 Keys:

 UpArrow DownArrow DownArrow " Enter
 Enter
 Enter
 Enter
 Enter
 Enter
 Enter
 Enter
 Enter
 Enter
 Enter
 Enter
 Enter
 Enter
 Enter
 Enter
 Enter
 Enter
 Enter
 Enter
 Enter
 Enter
 Enter
 Enter
 Enter
 Enter
 Enter
 Enter
 Enter
 Enter
 Enter
 Enter
 Enter
 Enter
 Enter
 Enter
 Enter
 Enter
 Enter
 Enter
 Enter
 Enter
 Enter
 Enter
 Enter
 Backspace Backspace Backspace Backspace Backspace Backspace Backspace Backspace Backspace Backspace Backspace Backspace Backspace Backspace Backspace Backspace Backspace Backspace Backspace Backspace Backspace Backspace Backspace Backspace Backspace Backspace Backspace Backspace Backspace Backspace Backspace Backspace Backspace Backspace Backspace Backspace Backspace Backspace Backspace Backspace Backspace Backspace Backspace Backspace Backspace

### Exception

System.IndexOutOfRangeException: Index was outside the bounds of the array.
   at System.Text.StringBuilder.get_Chars(Int32 index)
   at Microsoft.PowerShell.PSConsoleReadLine.ConvertOffsetToPoint(Int32 offset)
   at Microsoft.PowerShell.PSConsoleReadLine.ReallyRender(RenderData renderData, String defaultColor)
   at Microsoft.PowerShell.PSConsoleReadLine.ForceRender()
   at Microsoft.PowerShell.PSConsoleReadLine.Render()
   at Microsoft.PowerShell.PSConsoleReadLine.BackwardDeleteChar(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: 7.2.4
PS HostName: ConsoleHost
PSReadLine Version: 2.2.5
PSReadLine EditMode: Windows
OS: 10.0.22000.1 (WinBuild.160101.0800)
BufferWidth: 136
BufferHeight: 16

Steps to reproduce

1. Run PowerShell without a profile (pwsh -noprofile).
2. In a new prompt, run Set-PSReadlineOption -PredictionSource 'HistoryAndPlugin' -PredictionViewStyle 'ListView'. This is the paramount prerequisite.
3. Enter a single or double quote character ('/"). This line is the "initial line".
4. Press Enter repeatedly in a continuation prompt context until the "initial line" is out of the upper bound of the terminal screen buffer.
5. Press Backspace repeatedly in a continuation prompt until the "initial line" is back.
6. The above exception happens.

Something weird: The exception does not happen when there are five or more characters (including the unmatched quote) in the "initial line".

Expected behavior

No exception.

Actual behavior

The above exception happens.

[daxian-dbw]

BufferWidth: 110
BufferHeight: 45

I cannot reproduce the reported issue (using the same buffer height/width, also tried other height/width). Are you able to reproduce this consistently? If so, can you be more specific on the repro steps -- such as how many Enter to press and how many Backspace to press -- to make sure it reproduceable?

[lewis-yeung]

@daxian-dbw Found the culprit! There is a line Set-PSReadlineOption -PredictionSource 'HistoryAndPlugin' -PredictionViewStyle 'ListView' in my profile. With this prerequisite, we can reproduce the bug stably.

Seems that if both of the two features are enabled, something goes wrong internally.

[daxian-dbw]

@lewis-yeung Thanks, that helps!

[rafek1241]

Additional information:

There's no PredictionViewStyle option.
Powershell version: 7.2.5
PSReadLine version:

[daxian-dbw]

@rafek1241 It's possible the help content on your machine is outdated. You can run Get-Command Set-PSReadLineOption -Syntax to see the latest available parameters.

[rafek1241]

@daxian-dbw

[daxian-dbw]

It looks the PSReadLine version you imported in this session is 2.1.0. Run Get-Module PSReadLine in the same session to see if that's the case.