Multi-line prompt incorrectly displayes the last line with PSReadLine

[lzybkr]

From @vors on July 3, 2016 5:16

Steps to reproduce

function prompt
{
    "PS $pwd`n Hello`n World>"
}

Type 'foo' with the new prompt

Expected behavior

PS /Users/vors/dev/PowerShell/src
 Hello
 World>foo 

Actual behavior

PS /Users/vors/dev/PowerShell/src
 Hello
PS /Usefoo  

Environment data

> $PSVersionTable
Name                           Value                                                                                                        
----                           -----                                                                                                        
PSVersion                      5.1.10032.0                                                                                                  
PSEdition                      Linux                                                                                                        
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0...}                                                                                      
BuildVersion                   3.0.0.0                                                                                                      
GitCommitId                    v0.5.0-257-g07501f1d3a02c4e70da8a2693e3d0f833a61cf65                                                         
CLRVersion                                                                                                                                  
WSManStackVersion              1.0                                                                                                          
PSRemotingProtocolVersion      2.3                                                                                                          
SerializationVersion           1.1.0.1   

Copied from original issue: PowerShell/PowerShell#1269

[lzybkr]

From @vors on July 27, 2016 6:45

Also, Set-PSReadlineOption -ExtraPromptLineCount 3 behaves weirdly, could be related

[lzybkr]

From @vors on July 27, 2016 6:47

I verified, problem doesn't repro, if I remove PSReadLine.

[lzybkr]

I believe this is fixed in #561.

I'll publish a pre-release version to the PowerShell Gallery as soon as they support pre-releases.

If you'd like to try a fix before that, you can build the lastest yourself from the master branch, or
grab a build from AppVeyor like this one.

Note the version number is now 2.0, so be sure to copy the contents to \PSReadLine\2.0.

[vors]

Trying to deploy the linked zip file on macOS and PowerShell/Microsoft.PowerShell.Archive#11 shows its head again

[vors]

Verified that this is fixed, thank you @lzybkr !

[lzybkr]

I'll have an official prerelease build out next week if you want to verify this is fixed, otherwise you can grab a build out of appveyor here.

[nanoant]

@lzybkr Hi, I am sorry, but I think we have regressed with this issue in 2.0.0-Beta1. I have recently upgraded to 2.0.0-Beta1 to fix broken multi-line prompt after console layout #633, and while that one is fixes, it seems that Set-PSReadlineOption -ExtraPromptLineCount 1 no longer works - I also tested latest AppVeyor build. Reverting back to 1.2, makes Ctrl+L properly clear the prompt.
Can we please re-open?

[rkeithhill]

I have a two line (ANSI) prompt string and yeah, I wound up commenting out the line in my profile that was setting Set-PSReadlineOption -ExtraPromptLineCount 1. The prompt worked better after that.

[lzybkr]

Please open a new issue - this one was more general.

I'm a little surprised I didn't notice, I added the option for myself and I do use Ctrl+L.