OSC sequences in prompt get front loaded

[Tyriar]

Windows Terminal version (or Windows build number)

19042.1165

Other Software

VS Code
Version: 1.61.0-insider (user setup)
Commit: ec40cbe164c59f3d13b6eff5fc7b0231ec0ab7aa
Date: 2021-09-13T05:15:14.689Z
Electron: 13.1.8
Chrome: 91.0.4472.164
Node.js: 14.16.0
V8: 9.1.269.39-electron.0
OS: Windows_NT x64 10.0.19042

Steps to reproduce

Redefine the prompt to inject OSC sequences, for example:

pwsh:

function Prompt() {
  return "`e]133;before`u{7}middle`e]133;after`u{7}"
}

wsl.exe:

export PS1='\x1b]133;before\x07middle\x1b]133;after\x07

When this gets run through conpty all the OSC sequences seem to get front loaded, not put in the order that they are defined.

Expected Behavior

I expect the terminal to receive the following:

�[?25l�[12;7H�]133;before�middle�]133;after�
�[?25h

Actual Behavior

�[?25l�[12;7H�]133;before��]133;after�
middle�[?25h

[j4james]

This sounds like a variant of #8698.

Edit: Although, now that I think about, this particular case is probably not completely fixable without a pure pass-through mode (i.e. #1173).

[zadjii-msft]

Yea, this is /dup #8698, which should get fixed by passthrough, once we get the details all sorted out.

[ghost]

Hi! We've identified this issue as a duplicate of another one that already exists on this Issue Tracker. This specific instance is being closed in favor of tracking the concern over on the referenced thread. Thanks for your report!