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v2.0.0 not working In my local avalonia project #102

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v2.0.0 not working In my local avalonia project#102

Description

@YoshihiroIto
YoshihiroIto
opened on Dec 13, 2025

Describe the bug

In my local Avalonia project, after updating the following NuGet packages:

  • TextMateSharp
  • TextMateSharp.Grammars
    from v1.0.70 to v2.0.0, the application stopped working and the exception below is thrown.
System.TypeLoadException: Method 'GetLineText' in type 'AvaloniaEdit.TextMate.TextEditorModel' from assembly 'AvaloniaEdit.TextMate, Version=11.3.0.0, Culture=neutral, PublicKeyToken=c8d484a7012f9a8b' does not have an implementation.
   at AvaloniaEdit.TextMate.TextMate.Installation.SetTheme(IRawTheme theme)
   at AvaloniaEdit.TextMate.TextMate.Installation.SetTheme(IRawTheme theme)
   at AvaloniaEdit.TextMate.TextMate.Installation..ctor(TextEditor editor, IRegistryOptions registryOptions, Boolean initCurrentDocument)
   at AvaloniaEdit.TextMate.TextMate.InstallTextMate(TextEditor editor, IRegistryOptions registryOptions, Boolean initCurrentDocument)

Desktop (please complete the following information):

  • OS:Windows
  • Version 11

Activity

  1. deapstack commented on Dec 13, 2025

    @deapstack
    deapstack
    on Dec 13, 2025

    Same here

  2. YoshihiroIto commented on Dec 15, 2025

    @YoshihiroIto
    YoshihiroIto
    on Dec 15, 2025
    ContributorAuthor

    I applied the fixes locally based on the changes, built the project, and confirmed that it works. Thank you.

  3. YoshihiroIto
    closed this as completedon Dec 15, 2025

  4. danipen commented on Dec 15, 2025

    @danipen
    danipen
    on Dec 15, 2025
    Owner

    See #100

    ⚠️ Breaking Changes

    • IModelLines.GetLineText() now returns LineText instead of string
    • IGrammar.TokenizeLine() signature changed to accept LineText

    Migration: Replace string with LineText in implementations. The implicit conversion from string means most call sites work unchanged.

  5. danipen commented on Dec 15, 2025

    @danipen
    danipen
    on Dec 15, 2025
    Owner

    I'f you're using TextMateSharp via AvaloniaEdit, I will write a new PR to migrate to TextMateSharp v2.0.0 soon

  6. YoshihiroIto commented on Dec 15, 2025

    @YoshihiroIto
    YoshihiroIto
    on Dec 15, 2025
    ContributorAuthor

    TextMateSharp v2.0.0 introduced breaking changes, requiring updates to dependent implementations. Since AvaloniaEdit was affected, I applied the necessary fixes and built the project.

  7. udlose commented on Dec 15, 2025

    @udlose
    udlose
    on Dec 15, 2025
    Contributor

    @YoshihiroIto I understand now. My bad. Thanks for clarifying.

    @danipen thanks for planning on merging the update into AvaloniaEdit - much appreciated! Hopefully, they create a release shortly thereafter. I'm still waiting to get the fix for this bug (TextEditor.SelectAll method doesn't work) which had a fix merged, but they never created a release for it.

  8. danipen commented on Dec 16, 2025

    @danipen
    danipen
    on Dec 16, 2025
    Owner

    AvaloniaEdit changes to use TextMateSharp 2.0. PR: AvaloniaUI/AvaloniaEdit#550

  9. udlose commented on Dec 17, 2025

    @udlose
    udlose
    on Dec 17, 2025
    Contributor

    AvaloniaEdit changes to use TextMateSharp 2.0. PR: AvaloniaUI/AvaloniaEdit#550

    @danipen I left a comment/question on your PR

  10. YoshihiroIto commented on Dec 18, 2025

    @YoshihiroIto
    YoshihiroIto
    on Dec 18, 2025
    ContributorAuthor

    @danipen I built this PR locally and confirmed that it works as expected. Thank you!

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