Stuttering using interactive commands

[t924417424]

Input will slow down when there are too many characters in the terminal System: windows10 TerminalSize: 1920*1080 example: vim、top...

[xtyxtyx]

Could you provide your flutter doctor output?

[t924417424]

你能提供你的flutter doctor输出吗？

Doctor summary (to see all details, run flutter doctor -v): [√] Flutter (Channel stable, 2.5.3, on Microsoft Windows [Version 10.0.19043.1288], locale zh-CN) [√] Android toolchain - develop for Android devices (Android SDK version 31.0.0) [√] Chrome - develop for the web [√] Visual Studio - develop for Windows (Visual Studio 生成工具 2019 16.11.3)
[√] Android Studio (version 2020.3) [√] Connected device (3 available)

[t924417424]

[vanoseva]

Any updates? I have the same issue.

[devmil]

Two ideas from my side here:

1. Do you use TerminalIsolate or Terminal in your application?
2. If TerminalIsolate (which should already be more responsive than Terminal) then could you try the latest beta update of Flutter (they improved Isolate performance)

[vanoseva]

Hi @devmil 1. Do you use TerminalIsolate or Terminal in your application?_ I am using Terminal 2. If TerminalIsolate (which should already be more responsive than Terminal) then could you try the latest beta update of Flutter (they improved Isolate performance) When I try TerminalIsolate (using isolate.dart in the example of xterm), I encountered the exception "Null check operator used on a null value" in terminal_isolate.dart file @override int get scrollOffsetFromBottom => _lastState!.scrollOffsetFromBottom;

xterm version: ^2.5.0-pre

And here is my flutter info: Doctor summary (to see all details, run flutter doctor -v): [√] Flutter (Channel stable, 2.5.1, on Microsoft Windows [Version 10.0.22000.348], locale en-US) [!] Android toolchain - develop for Android devices (Android SDK version 30.0.3) X cmdline-tools component is missing Run path/to/sdkmanager --install "cmdline-tools;latest" See https://developer.android.com/studio/command-line for more details. X Android license status unknown. Run flutter doctor --android-licenses to accept the SDK licenses. See https://flutter.dev/docs/get-started/install/windows#android-setup for more details. [√] Chrome - develop for the web [√] Visual Studio - develop for Windows (Visual Studio Professional 2019 16.11.3) [√] Android Studio (version 4.1) [√] VS Code (version 1.63.0) [√] Connected device (3 available)

! Doctor found issues in 1 category.

[devmil]

Sorry for the delay. I assume you did not start the isolate, did you? Like here: https://github.com/TerminalStudio/studio/blob/ec3920fe72db2e0a0ce243320ad8b644c92d15e1/studio/lib/main.dart#L139

I think we should get a better error message in that case though!