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Handle workspace:// URLs in regular markdown links #12166

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Merged
0ubbe merged 5 commits into from
Feb 25, 2026
Merged

Handle workspace:// URLs in regular markdown links #12166

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0697f07
fix(frontend): resolve workspace:// URLs in regular markdown links
claude Feb 19, 2026
e17749b
Merge branch 'dev' into claude/debug-upload-blocked-RFGA7
ntindle Feb 19, 2026
2ab975b
Merge branch 'dev' into claude/debug-upload-blocked-RFGA7
0ubbe Feb 25, 2026
984a741
refactor(frontend/copilot): tighten workspace URL regex patterns
0ubbe Feb 25, 2026
60c18d0
Merge branch 'dev' into claude/debug-upload-blocked-RFGA7
0ubbe Feb 25, 2026
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26 changes: 22 additions & 4 deletions ...end/src/app/(platform)/copilot/components/ChatMessagesContainer/ChatMessagesContainer.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -33,12 +33,15 @@ import { ViewAgentOutputTool } from "../../tools/ViewAgentOutput/ViewAgentOutput

/**
* Resolve workspace:// URLs in markdown text to proxy download URLs.
* Detects MIME type from the hash fragment (e.g. workspace://id#video/mp4)
* and prefixes the alt text with "video:" so the custom img component can
* render a <video> element instead.
*
* Handles both image syntax `![alt](workspace://id#mime)` and regular link
* syntax `[text](workspace://id)`. For images the MIME type hash fragment is
* inspected so that videos can be rendered with a `<video>` element via the
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* custom img component.
*/
function resolveWorkspaceUrls(text: string): string {
return text.replace(
// Handle image links: ![alt](workspace://id#mime)
let resolved = text.replace(
/!\[([^\]]*)\]\(workspace:\/\/([^)#\s]+)(?:#([^)\s]*))?\)/g,
(_match, alt: string, fileId: string, mimeHint?: string) => {
const apiPath = getGetWorkspaceDownloadFileByIdUrl(fileId);
Expand All @@ -49,6 +52,21 @@ function resolveWorkspaceUrls(text: string): string {
return `![${alt || "Image"}](${url})`;
},
);

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// Handle regular links: [text](workspace://id) — without the leading "!"
// These are blocked by Streamdown's rehype-harden sanitizer because
// "workspace://" is not in the allowed URL-scheme whitelist, which causes
// "[blocked]" to appear next to the link text.
resolved = resolved.replace(
/(?<!!)\[([^\]]*)\]\(workspace:\/\/([^)#\s]+)(?:#([^)\s]*))?\)/g,
(_match, linkText: string, fileId: string) => {
const apiPath = getGetWorkspaceDownloadFileByIdUrl(fileId);
const url = `/api/proxy${apiPath}`;
return `[${linkText || "Download file"}](${url})`;
},
);

return resolved;
}

/**
Expand Down