"Unrecognized token in source text" message the very first time Enter is pressed at [DBG] prompt

[sba923]

Issue Description

The very first time I press Enter at the [DBG] prompt (which is missing, see #1850), I get:

Attached Logs

See
1572900663-0a6384c3-9784-4218-b9b3-4cfd2709d74f1572900632277.zip

Environment Information

Visual Studio Code

Name	Version
Operating System	Windows_NT x64 10.0.18362
VSCode	1.39.2
PowerShell Extension Version	2019.11.0

PowerShell Information

Name	Value
PSVersion	7.0.0-preview.5
PSEdition	Core
GitCommitId	7.0.0-preview.5
OS	Microsoft Windows 10.0.18362
Platform	Win32NT
PSCompatibleVersions	1.0 2.0 3.0 4.0 5.0 5.1.10032.0 6.0.0 6.1.0 6.2.0 7.0.0-preview.5
PSRemotingProtocolVersion	2.3
SerializationVersion	1.1.0.1
WSManStackVersion	3.0

Visual Studio Code Extensions

Visual Studio Code Extensions(Click to Expand)

Extension	Author	Version
Angular-BeastCode	Mikael	8.0.10
angular-console	nrwl	8.1.2
angular2-inline	natewallace	0.0.17
angular2-switcher	infinity1207	0.2.0
autoit	Damien	1.0.1
azure-account	ms-vscode	0.8.7
azure-pipelines	ms-azure-devops	1.157.4
beautify	HookyQR	1.5.0
Bookmarks	alefragnani	10.5.0
bracket-pair-colorizer	CoenraadS	1.0.61
cmake	twxs	0.0.17
cpptools	ms-vscode	0.26.1
csharp	ms-vscode	1.21.5
debugger-for-chrome	msjsdiag	4.12.1
gc-excelviewer	GrapeCity	2.1.32
github-pr	jasonnutter	1.0.0
html-css-class-completion	Zignd	1.19.0
indent-rainbow	oderwat	7.4.0
java	redhat	0.52.0
live-html-previewer	hdg	0.3.0
lorem-ipsum	Tyriar	1.2.0
markdown-all-in-one	yzhang	2.5.1
markdown-pdf	yzane	1.4.1
mssql	ms-mssql	1.7.0
ng-template	Angular	0.802.3
npm-intellisense	christian-kohler	1.3.0
path-intellisense	christian-kohler	1.4.2
platformio	formulahendry	0.3.0
powershell-preview	ms-vscode	2019.11.0
prettier-vscode	esbenp	2.3.0
printcode	nobuhito	3.0.0
python	ms-python	2019.10.44104
quicktype	quicktype	12.0.46
rainbow-csv	mechatroner	1.3.1
reg	ionutvmi	1.0.1
remote-wsl	ms-vscode-remote	0.39.9
rest-client	humao	0.22.2
todo-tree	Gruntfuggly	0.0.162
vscode-color	anseki	0.4.5
vscode-html-css	ecmel	0.2.3
vscode-java-debug	vscjava	0.23.0
vscode-java-dependency	vscjava	0.6.0
vscode-java-pack	vscjava	0.8.0
vscode-java-test	vscjava	0.21.0
vscode-javascript-snippet-pack	akamud	0.1.5
vscode-m3u	af4jm	1.0.0
vscode-markdownlint	DavidAnson	0.31.2
vscode-maven	vscjava	0.19.1
vscode-npm-script	eg2	0.3.9
vscode-standardjs	chenxsan	1.2.3
vscode-svg-previewer	vitaliymaz	0.5.1
vscode-typescript-tslint-plugin	ms-vscode	1.2.2
vscodeintellicode	VisualStudioExptTeam	1.2.0

[rjmholt]

Duplicate of #2274

[sba923]

I can't repro the @ / error message outside of the debugging context. Running a script with no breakpoints or invoking a cmdlet behaves normally.

[rjmholt]

Yes I think the @ is inserted when the prompt is cancelled, which only happens when you run things from the editor rather than the console. Discussion continues in #2274.

[ghost]

This issue has been marked as duplicate and has not had any activity for 1 day. It has been closed for housekeeping purposes.