example ssh.dart: crash when opening text file with vim

[Daliji]

open a text file on linux server, hen a line of text file has thousands of characters, exception occurred:

flutter: ssh://xxx:22: ssh negotiated { kex=curve25519-sha256@libssh.org, hostkey=ssh-ed25519, cipher=aes128-ctr, mac=hmac-sha1, compress=none }
[ERROR:flutter/lib/ui/ui_dart_state.cc(209)] Unhandled Exception: RangeError: Invalid value: Not in inclusive range 0..44: 45
#0      CircularList.[]
package:xterm/util/circular_list.dart:58
#1      Buffer.getViewLine
package:xterm/buffer/buffer.dart:127
#2      Buffer.currentLine
package:xterm/buffer/buffer.dart:131
#3      Buffer.writeChar
package:xterm/buffer/buffer.dart:100
#4      Terminal._processChar
package:xterm/terminal/terminal.dart:293
#5      Terminal._processInput
package:xterm/terminal/terminal.dart:284
#6      Terminal.write
package:xterm/terminal/terminal.dart:243
#7      _rootRunUnary (dart:async/zone.dart:1436:47)
#8      _CustomZone.runUnary (dart:async/zone.dart:1335:19)
#9      _CustomZone.runUnaryGuarded (dart:async/zone.dart:1244:7)
#10     _BufferingStreamSubscription._sendData (dart:async/stream_impl.dart:341:11)
#11     _DelayedData.perform (dart:async/stream_impl.dart:591:14)
#12     _StreamImplEvents.handleNext (dart:async/stream_impl.dart:706:11)
#13     _PendingEvents.schedule.<anonymous closure> (dart:async/stream_impl.dart:663:7)
#14     _rootRun (dart:async/zone.dart:1420:47)
#15     _CustomZone.run (dart:async/zone.dart:1328:19)
#16     _CustomZone.runGuarded (dart:async/zone.dart:1236:7)
#17     _CustomZone.bindCallbackGuarded.<anonymous closure> (dart:async/zone.dart:1276:23)
#18     _rootRun (dart:async/zone.dart:1428:13)
#19     _CustomZone.run (dart:async/zone.dart:1328:19)

flutter doctor:

Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, 2.5.3, on macOS 12.1 21C52 darwin-arm, locale zh-Hans-CN)
[!] Android toolchain - develop for Android devices (Android SDK version 31.0.0)
    ✗ cmdline-tools component is missing
      Run `path/to/sdkmanager --install "cmdline-tools;latest"`
      See https://developer.android.com/studio/command-line for more details.
    ✗ Android license status unknown.
      Run `flutter doctor --android-licenses` to accept the SDK licenses.
      See https://flutter.dev/docs/get-started/install/macos#android-setup for more details.
[✓] Xcode - develop for iOS and macOS
[✓] Chrome - develop for the web
[✓] Android Studio (version 2020.3)
[✓] IntelliJ IDEA Ultimate Edition (version 2021.2.1)
[✓] VS Code (version 1.63.2)
[✓] Connected device (2 available)

! Doctor found issues in 1 category.