microsoft / microsoft/monaco-editor

[Bug] MacOS: Multiline edit not functional in Safari, works well in Chrome

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bug editor-core mac
Dominant language
JavaScript
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Avg merge
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Description

Reproducible in vscode.dev or in VS Code Desktop?
  • Not reproducible in vscode.dev or VS Code Desktop
Reproducible in the monaco editor playground?
Monaco Editor Playground Code
This seems to apply to all Monaco instances on Safari.
Reproduction Steps

Select code in Monaco editor in browser and press Option+Command+Up Arrow or Option+Command+Down Arrow

Actual (Problematic) Behavior

This selects multiple lines of code in Chrome but not Safari. This behavior is consistent at the playground.

Expected Behavior

I expect working multi-line select regardless of what browser is used.

Additional Context

No response

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing the issue in the Monaco Editor Playground on Safari with Option+Command+Up Arrow and Option+Command+Down Arrow, then compare the same selection in Chrome. Trace the keyboard-handling entry point responsible for multiline selection. Done means selecting multiple lines works in Safari as it already does in Chrome.

Written by the indexing model from the issue text.

Assessment

Tech stack
javascript, typescript
Domain
frontend
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
38/100

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