Exception on non-Windows w/ command line w/ more lines than visible console buffer

[bgshacklett]

Environment data

PS version: 6.0.2
PSReadline version: 2.0.0-beta1
os: Darwin BrianShlettsMBP.attlocal.net 17.4.0 Darwin Kernel Version 17.4.0: Sun Dec 17 09:19:54 PST 2017; root:xnu-4570.41.2~1/RELEASE_X86_64 x86_64
PS file version:

Steps to reproduce or exception report

This occurred while attempting to paste in the Get-IniContent function at https://gallery.technet.microsoft.com/scriptcenter/ea40c1ef-c856-434b-b8fb-ebd7a76e8d91

Last 200 Keys:
 Space Space } Enter
 Space Space Space Space W r i t e - V e r b o s e Space " $ ( $ M y I n v o c a t i o n . M y C o m m a n d . N a m e ) : : Space F i n i s h e d Space P r o c e s s i n g Space f i l e : Space $ F i l e P a t h " Enter
 Space Space Space Space R e t u r n Space $ i n i Enter
 Space Space } Enter
 Enter
 Space Space E n d Enter
 Space Space { Enter
 Space Space Space Space W r i t e - V e r b o s e Space " $ ( $ M y I n v o c a t i o n . M y C o m m a n d . N a m e ) : : Space F u n c t i o n Space e n d e d " Enter
 Space Space } Enter
 } Enter


Exception:
System.ArgumentOutOfRangeException: The value must be greater than or equal to zero and less than the console's buffer size in that dimension.
Parameter name: top
Actual value was -69.
   at System.Console.SetCursorPosition(Int32 left, Int32 top)
   at Microsoft.PowerShell.PSConsoleReadLine.ReallyRender(RenderData renderData, String defaultColor)
   at Microsoft.PowerShell.PSConsoleReadLine.ForceRender()
   at Microsoft.PowerShell.PSConsoleReadLine.Insert(Char c)
   at Microsoft.PowerShell.PSConsoleReadLine.SelfInsert(Nullable`1 key, Object arg)
   at Microsoft.PowerShell.PSConsoleReadLine.ProcessOneKey(ConsoleKeyInfo key, Dictionary`2 dispatchTable, Boolean ignoreIfNoAction, Object arg)
   at Microsoft.PowerShell.PSConsoleReadLine.InputLoop()
   at Microsoft.PowerShell.PSConsoleReadLine.ReadLine(Runspace runspace, EngineIntrinsics engineIntrinsics)

[lzybkr]

I don't have a Mac and I tried the same on Windows without an exception.

The stack you report is hit after nearly every single character, so I think there must be something very special about what was pasted and how.

Can you try to provide some more specifics, maybe reproduce the problem with a smaller piece of text? Without more information, this would be extremely difficult to fix.

[bgshacklett]

Definitely. I've been planning to look into some of these Mac related issues myself. I just wanted to make sure I didn't forget about the issue before I had a chance.

[bgshacklett]

After a fair amount of experimentation, I've found that this error occurs whenever the number of lines pasted without immediate execution is greater than the number of visible lines in the terminal window. I also found that it's reproducible in the standard Mac terminal and Hyper, as well.

Steps to reproduce:

1. Open Terminal.app
2. Note the number of lines in the terminal window by looking at the title bar of the window (the default should be 24).
3. Enter <# on the first line and press the return key.
4. Press the return key N times, where N is the number of lines visible in the terminal window (this should result in N+1 lines entered total).

I haven't gotten a chance to take a look at the code at all, yet, to see why this is occurring. I'll try to get to that soon.

[lzybkr]

Thanks for narrowing down the problem - I can reproduce on Linux as well, I've updated the title accordingly.

[bgshacklett]

Just another data point, I believe I'm experiencing this when listing available completions by pressing <Tab><Tab>:

Last 9 Keys:
 g e t - s s m Tab Tab

Exception:
System.ArgumentOutOfRangeException: The value must be greater than or equal to zero and less than the console's buffer size in that dimension.
Parameter name: top
Actual value was -26.
   at System.Console.SetCursorPosition(Int32 left, Int32 top)
   at Microsoft.PowerShell.PSConsoleReadLine.Menu.DrawMenu(Menu previousMenu)
   at Microsoft.PowerShell.PSConsoleReadLine.PossibleCompletionsImpl(CommandCompletion completions, Boolean menuSelect)
   at Microsoft.PowerShell.PSConsoleReadLine.CompleteImpl(Boolean menuSelect)
   at Microsoft.PowerShell.PSConsoleReadLine.ProcessOneKey(ConsoleKeyInfo key, Dictionary`2 dispatchTable, Boolean ignoreIfNoAction, Object arg)
   at Microsoft.PowerShell.PSConsoleReadLine.InputLoop()
   at Microsoft.PowerShell.PSConsoleReadLine.ReadLine(Runspace runspace, EngineIntrinsics engineIntrinsics)
-----------------------------------------------------------------------
~> Get-SSM

Also, this may be obvious, but I'd rather include it just in case: I found that the value of the parameter top appears to be directly related to the number of lines which need to be drawn. If I increase the height of the terminal window so that the error reports Actual value was -1, I can prevent the error on the next try by increasing the terminal window's height by a single line.

[lzybkr]

I would call that a distinct bug with the same symptom. The fix will definitely be different - we should just display possible completions without using the menu if it doesn't fit on the screen.

[SteveL-MSFT]

I'm working on this one