Microsoft/vscode

Chat participant rendered markdown HTML gets output as raw string before rendered correctly

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#239,765 opened on Feb 6, 2025

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 (3 comments) (0 reactions) (1 assignee)TypeScript (39,847 forks)batch import
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Description

Does this issue occur when all extensions are disabled?: Yes

  • VS Code Version: 1.97.0-insider
  • OS Version: macOS

Steps to Reproduce:

Given the code:

  const message = new vscode.MarkdownString(
    `<sup><span style="color:var(--vscode-editorCodeLens-foreground);">$(info) Wallaby is using ${model.name}</span></sup>\n`,
  );
  message.supportHtml = true;
  message.supportThemeIcons = true;

  chatStream.markdown(message);

where chatStream is vscode.ChatResponseStream, the end user result is that it starts rendering raw text and then renders formatted HTML:

Image

Contributor guide

Research direction
Investigate the rendering flow of ChatResponseStream.markdown when using MarkdownString with HTML and theme icons. Look for race conditions or async issues in the chat participant output.
Tech stack
typescript
Domain
api
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
GitTypeScript
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
70