[GH-ISSUE #1997] [Bug] Exception thrown after inserting '/' slash in middle of text #789

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opened 2026-03-23 20:41:05 +00:00 by mirror · 2 comments

mirror commented

2026-03-23 20:41:05 +00:00

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Originally created by @zoli on GitHub (Mar 15, 2023).
Original GitHub issue: https://github.com/AppFlowy-IO/AppFlowy/issues/1997

Originally assigned to: @LucasXu0 on GitHub.

Bug Description

inserting '/' slash in middle of text causes exception.

How to Reproduce

Go to any line including text and insert '/' in the middle of the text.

Expected Behavior

To insert '/' and show slash command menu or at least not throw exception.

Operating System

Arch Linux

AppFlowy Version(s)

Exists on 4c0168d7fa commit

Screenshots

No response

Additional Context

Probably the root cause are changes in this commit.

Originally created by @zoli on GitHub (Mar 15, 2023). Original GitHub issue: https://github.com/AppFlowy-IO/AppFlowy/issues/1997 Originally assigned to: @LucasXu0 on GitHub. ### Bug Description inserting '/' slash in middle of text causes exception. ### How to Reproduce Go to any line including text and insert '/' in the middle of the text. ### Expected Behavior To insert '/' and show slash command menu or at least not throw exception. ### Operating System Arch Linux ### AppFlowy Version(s) Exists on 4c0168d7faa556910b6a0cef06e0385a5d2978db commit ### Screenshots _No response_ ### Additional Context Probably the root cause are changes in [this](https://github.com/AppFlowy-IO/AppFlowy/commit/085ef8f668697081d92ae500810a9124e9b71966) commit.

mirror

2026-03-23 20:41:05 +00:00

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mirror commented

2026-03-23 20:41:05 +00:00

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@LucasXu0 commented on GitHub (Mar 15, 2023):

Hey, @zoli. Can you share the exception message?

@LucasXu0 commented on GitHub (Mar 15, 2023): Hey, @zoli. Can you share the exception message?

mirror commented

2026-03-23 20:41:06 +00:00

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@zoli commented on GitHub (Mar 15, 2023):

Hey, @zoli. Can you share the exception message?

══╡ EXCEPTION CAUGHT BY SERVICES LIBRARY ╞══════════════════════════════════════════════════════════
The following StateError was thrown while processing the key message handler:
Bad state: No element

When the exception was thrown, this was the stack:
#0      Iterable.first (dart:core/iterable.dart:624:7)
#1      TextTransaction.replaceText (package:appflowy_editor/src/core/transform/transaction.dart:271:57)
#2      slashShortcutHandler.<anonymous closure>
(package:appflowy_editor/src/service/internal_key_event_handlers/slash_handler.dart:24:7)
#3      _AppFlowyKeyboardState.onKey (package:appflowy_editor/src/service/keyboard_service.dart:133:45)
#4      _AppFlowyKeyboardState._onKey (package:appflowy_editor/src/service/keyboard_service.dart:157:12)
#5      FocusManager._handleKeyMessage (package:flutter/src/widgets/focus_manager.dart:1683:32)
#6      KeyEventManager._dispatchKeyMessage (package:flutter/src/services/hardware_keyboard.dart:824:34)
#7      KeyEventManager.handleRawKeyMessage (package:flutter/src/services/hardware_keyboard.dart:889:17)
#8      BasicMessageChannel.setMessageHandler.<anonymous closure>
(package:flutter/src/services/platform_channel.dart:197:49)
#9      _DefaultBinaryMessenger.setMessageHandler.<anonymous closure> (package:flutter/src/services/binding.dart:387:35)
#10     _invoke2 (dart:ui/hooks.dart:186:13)
#11     _ChannelCallbackRecord.invoke (dart:ui/channel_buffers.dart:42:5)
#12     _Channel.push (dart:ui/channel_buffers.dart:132:31)
#13     ChannelBuffers.push (dart:ui/channel_buffers.dart:329:17)
#14     PlatformDispatcher._dispatchPlatformMessage (dart:ui/platform_dispatcher.dart:599:22)
#15     _dispatchPlatformMessage (dart:ui/hooks.dart:89:31)

KeyMessage: KeyMessage([KeyDownEvent#e9c4e(physicalKey: PhysicalKeyboardKey#70038(usbHidUsage:
  "0x00070038", debugName: "Slash"), logicalKey: LogicalKeyboardKey#0002f(keyId: "0x0000002f",
  keyLabel: "/", debugName: "Slash"), character: "/", timeStamp: 46:54:13.925000)])
════════════════════════════════════════════════════════════════════════════════════════════════════

@zoli commented on GitHub (Mar 15, 2023): > Hey, @zoli. Can you share the exception message? ``` ══╡ EXCEPTION CAUGHT BY SERVICES LIBRARY ╞══════════════════════════════════════════════════════════ The following StateError was thrown while processing the key message handler: Bad state: No element When the exception was thrown, this was the stack: #0 Iterable.first (dart:core/iterable.dart:624:7) #1 TextTransaction.replaceText (package:appflowy_editor/src/core/transform/transaction.dart:271:57) #2 slashShortcutHandler.<anonymous closure> (package:appflowy_editor/src/service/internal_key_event_handlers/slash_handler.dart:24:7) #3 _AppFlowyKeyboardState.onKey (package:appflowy_editor/src/service/keyboard_service.dart:133:45) #4 _AppFlowyKeyboardState._onKey (package:appflowy_editor/src/service/keyboard_service.dart:157:12) #5 FocusManager._handleKeyMessage (package:flutter/src/widgets/focus_manager.dart:1683:32) #6 KeyEventManager._dispatchKeyMessage (package:flutter/src/services/hardware_keyboard.dart:824:34) #7 KeyEventManager.handleRawKeyMessage (package:flutter/src/services/hardware_keyboard.dart:889:17) #8 BasicMessageChannel.setMessageHandler.<anonymous closure> (package:flutter/src/services/platform_channel.dart:197:49) #9 _DefaultBinaryMessenger.setMessageHandler.<anonymous closure> (package:flutter/src/services/binding.dart:387:35) #10 _invoke2 (dart:ui/hooks.dart:186:13) #11 _ChannelCallbackRecord.invoke (dart:ui/channel_buffers.dart:42:5) #12 _Channel.push (dart:ui/channel_buffers.dart:132:31) #13 ChannelBuffers.push (dart:ui/channel_buffers.dart:329:17) #14 PlatformDispatcher._dispatchPlatformMessage (dart:ui/platform_dispatcher.dart:599:22) #15 _dispatchPlatformMessage (dart:ui/hooks.dart:89:31) KeyMessage: KeyMessage([KeyDownEvent#e9c4e(physicalKey: PhysicalKeyboardKey#70038(usbHidUsage: "0x00070038", debugName: "Slash"), logicalKey: LogicalKeyboardKey#0002f(keyId: "0x0000002f", keyLabel: "/", debugName: "Slash"), character: "/", timeStamp: 46:54:13.925000)]) ════════════════════════════════════════════════════════════════════════════════════════════════════ ```

mirror referenced this issue

2026-03-23 21:37:23 +00:00

[PR #789] [MERGED] feature: Shortcut for collapse the left sidebar #692 #4343