[DBG] prompt not displayed when breakpoint hit unless Enter is pressed

[sba923]

Issue Description

When I debug a PowerShell script and hit a breakpoint, the [DBG] prompt is not displayed immediately, but only after I hit Enter.

Here's what the TERMINAL pane shows when I hit F5 and the first breakpoint is hit:

[… output from various profile scripts]
PS ~/powershell> s:\powershell\df.ps1

When I then hit Enter this changes to:

[… output from various profile scripts]
PS ~/powershell> s:\powershell\df.ps1
[DBG]: PS ~/powershell>

Expected Behaviour

When the breakpoint is hit, the [DBG] prompt should be displayed right away.

Actual Behaviour

The [DBG] prompt is not displayed unless Enter is pressed.

Attached Log

PSESlogs201904060747.zip
s

System Details

System Details Output

### VSCode version: 1.33.0 0dd516dd412d42323fc3464531b1c715d51c4c1a x64

### VSCode extensions:
alefragnani.Bookmarks@10.4.2
anseki.vscode-color@0.4.5
austin.code-gnu-global@0.2.2
DougFinke.vscode-PSStackoverflow@0.0.2
Gruntfuggly.todo-tree@0.0.126
mechatroner.rainbow-csv@1.0.0
ms-vscode.cpptools@0.22.1
ms-vscode.powershell@1.12.0
ms-vscode.powershell-preview@2.0.1
msjsdiag.debugger-for-chrome@4.11.3
nobuhito.printcode@3.0.0
tht13.html-preview-vscode@0.2.5
VisualStudioExptTeam.vscodeintellicode@1.1.5
yzhang.markdown-all-in-one@2.2.0
zovorap.ab-html-formatter@0.0.2


### PSES version: 2.0.0.0

### PowerShell version:

Name                           Value
----                           -----
PSVersion                      5.1.17763.316
PSEdition                      Desktop
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0...}
BuildVersion                   10.0.17763.316
CLRVersion                     4.0.30319.42000
WSManStackVersion              3.0
PSRemotingProtocolVersion      2.3
SerializationVersion           1.1.0.1

[sba923]

This might or might not be related to the following other issue with prompts:

Take the following script, stored at C:\private_sba\PowerShell\TestPowerShellDebuggerBehaviorWithPrompt.ps1:

Write-Host("WH1")
Write-Host("WH2")
Write-Host("WH3")

If you run this via F5 in the Windows PowerShell ISE you get:

PS ~> C:\private_sba\PowerShell\TestPowerShellDebuggerBehaviorWithPrompt.ps1
WH1
WH2
WH3

But if you do the same in VScode, you get:

PS ~/PowerShell/work> WH1private_sba\PowerShell\TestPowerShellDebuggerBehaviorWithPrompt.ps1
WH2
WH3

if you're using the "PowerShell Launch Current File" configuration, and

PS ~/PowerShell/work> c:\private_sba\PowerShell\TestPowerShellDebuggerBehaviorWithPrompt.ps1

                      WH1
WH2
WH3

if you're using the "PowerShell Launch Current File w/Args Prompt" configuration.

Both are incorrect if you ask me. I'll probably open a separate issue for that.

[SydneyhSmith]

@sba923 thanks for reporting, both of these issues, the second one does separate, could you please open another issue for that one? We can reproduce this, it looks related to PSReadLine support.
We are having trouble reproducing the first one...which launch configuration are you using?

[sba923]

You're welcome.

Opened #1862.

(I've already mentioned which launch configurations I'm using ;-) )

[sba923]

I hate to say, but I can repro this with version 2019.11.0 of the PowerShell Preview extension (in conjunction with PSReadLine 2.0.0 beta 5).

I get an additional issue when I hit Enter after the debugger stops at the breakpoint:

I will open a new issue for that.