Can't use Backspace when using Terminal mode for Debugging

[ahmadalzoubi13579]

• VSCode Version: 1.41.1
• OS Version: Windows 10 Pro 64-bit (10.0, Build 18362)

Steps to Reproduce:

1. create launch.json
2. write "console": "terminal" in your configurations
3. write the following code that take an input from user :

import 'dart:io';

main() {
  stdout.writeln('what is Your Name ?');
  String name = stdin.readLineSync();
  print('Welcome $name');
}

4. start debugging

then i can input value , but i can't use backspace key to undo the text while i write in console.

[DanTup]

@gogoIsComing I was (literally!) just looking at this! I can repro in both Stable and Insiders - what's the reason you closed it?

[DanTup]

This happens even using the VS Code "local echo" sample code in the docs, and it's not clear whether it's fixable in the extension. I've opened microsoft/vscode#90618.

Re-opening this issue because it seems a certain bug, and it's not clear if we need to do work here yet.

[ahmadalzoubi13579]

@DanTup i already opened an issue microsoft/vscode#89139 (before current issue)
and they closed it , cause they thought it is extension issue

here the answer i got

[DanTup]

@gogoIsComing ah, thanks! It may be an extension issue, but the sample code fails in the same way and I can't see a way in the API for us to handle it. I'll keep this open while waiting for a response though. Thanks!

[DanTup]

Ok, looks like this is by-design in VS Code, so we'll need to fix another way. It seems silly to implement it as suggested (we'd end up with a lot of code just to pretend to be a terminal) so I'm going to switch from the pseudoterminal to a real terminal and use dart-lang/sdk#38418 to connect the debugger.