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fix(web): show minimap previews as plain text, not raw markdown - #15715
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The minimap hover preview only collapsed whitespace, so assistant replies with tables, links, code, or lists showed raw syntax such as "| Used for | Model | | --- | --- |". Strip common markdown syntax from the assistant text before compacting it, keeping cell text, link labels, and code contents.
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| // Table rows keep their cell text. | ||
| .replace(/^[ \t]*\|(.*?)\|?[ \t]*$/gm, (_, cells: string) => cells.replace(/\s*\|\s*/g, " ")) | ||
| // Blockquote, heading, list, and task markers at the start of a line. | ||
| .replace(/^[ \t]*(?:>[ \t]*)*(?:(?:#{1,6}|[-*+]|\d+[.)])[ \t]+)?(?:\[[ xX]\][ \t]+)?/gm, "") |
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🟡 Medium chat/timelineMinimapItems.ts:61
Standalone text beginning with [x] is returned without its checkbox, so an assistant answer such as [x] deployment complete loses the completion state even though it is rendered literally. The regex makes the checkbox optional independently of the list marker; require a list marker before stripping [ xX] .
| .replace(/^[ \t]*(?:>[ \t]*)*(?:(?:#{1,6}|[-*+]|\d+[.)])[ \t]+)?(?:\[[ xX]\][ \t]+)?/gm, "") | |
| .replace(/^[ \t]*(?:>[ \t]*)*(?:(?:#{1,6})[ \t]+|(?:(?:[-*+]|\d+[.)])[ \t]+(?:\[[ xX]\][ \t]+)?))?/gm, "") |
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In file @apps/web/src/components/chat/timelineMinimapItems.ts around line 61:
Standalone text beginning with `[x] ` is returned without its checkbox, so an assistant answer such as `[x] deployment complete` loses the completion state even though it is rendered literally. The regex makes the checkbox optional independently of the list marker; require a list marker before stripping `[ xX] `.
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Fixed in 725c2e4. The preview now parses the reply with remark-parse + remark-gfm instead of regexes, so [x] is only dropped when GFM parses it as a task list checkbox. Standalone [x] deployment complete previews unchanged; covered by the new test case.
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| .replace(/^[ \t]*(?:```|~~~).*$/gm, "") | ||
| .replace(/^[ \t]*\|?[ \t]*:?-{3,}:?[ \t]*(?:\|[ \t]*:?-{3,}:?[ \t]*)*\|?[ \t]*$/gm, "") | ||
| // Table rows keep their cell text. | ||
| .replace(/^[ \t]*\|(.*?)\|?[ \t]*$/gm, (_, cells: string) => cells.replace(/\s*\|\s*/g, " ")) |
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🟡 Medium chat/timelineMinimapItems.ts:59
Table previews corrupt escaped cell pipes: a cell containing a \| b is rendered as a \ b instead of a | b. The cells.replace(/\s*\|\s*/g, " ") call treats the escaped pipe emitted by the Markdown serializer as a column separator; preserve \| as a literal pipe while replacing only unescaped separators.
| .replace(/^[ \t]*\|(.*?)\|?[ \t]*$/gm, (_, cells: string) => cells.replace(/\s*\|\s*/g, " ")) | |
| .replace(/^[ \t]*\|(.*?)\|?[ \t]*$/gm, (_, cells: string) => cells.replace(/\\\||\s*\|\s*/g, (match) => match === "\\|" ? "|" : " ")) |
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In file @apps/web/src/components/chat/timelineMinimapItems.ts around line 59:
Table previews corrupt escaped cell pipes: a cell containing `a \| b` is rendered as `a \ b` instead of `a | b`. The `cells.replace(/\s*\|\s*/g, " ")` call treats the escaped pipe emitted by the Markdown serializer as a column separator; preserve `\|` as a literal pipe while replacing only unescaped separators.
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Fixed in 725c2e4. Table cells now come from the GFM parser, which treats \| as a literal pipe, so a \| b previews as a | b. Covered by the new test case.
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| /** Drops markdown syntax so table, list, and link sources read as plain preview text. */ | ||
| function stripMarkdownForPreview(text: string) { |
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🟡 Medium chat/timelineMinimapItems.ts:52
The minimap changes literal Markdown inside inline and fenced code: Use \**/*.ts`becomesUse *.ts, and fenced # literal/literal` content loses its markers. The function removes inline-code delimiters before the bold/strike pass and removes only fence lines, so later replacements process protected content; preserve code spans and fenced contents through the formatting passes, restoring only the delimiters' removal for inline code.
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In file @apps/web/src/components/chat/timelineMinimapItems.ts around line 52:
The minimap changes literal Markdown inside inline and fenced code: `Use \`**/*.ts\`` becomes `Use *.ts`, and fenced `# literal`/`**literal**` content loses its markers. The function removes inline-code delimiters before the bold/strike pass and removes only fence lines, so later replacements process protected content; preserve code spans and fenced contents through the formatting passes, restoring only the delimiters' removal for inline code.
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Fixed in 725c2e4. Inline code and fenced code are read from their parsed value, so their contents are never rewritten: **/*.ts, # install deps, and - **not bold** inside code keep their markers. Covered by the new test case.
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Included review availability: This review used your included allowance. Your plan provides up to 10 included reviews per hour; 8 remain after this review. 📝 WalkthroughWalkthroughAssistant minimap previews now parse Markdown and convert it to plain text before whitespace compaction. User preview handling remains unchanged. Null assistant text remains null. ChangesMinimap preview formatting
Priority: ⬇️ Low Estimated code review effort: 2 (Simple) | ~10 minutes Change: Bug fix Suggested reviewers: Merge Risk: ⚪ Minimal · up to The preview change is mergeable after normal checks. The investigated text-spacing and dependency concerns do not establish a failure. Architecture SummaryArchitecture risk: 🔵 Low · up to The change affects 1 system. Changed systems: Architecture concerns Review detailsSystems and components
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Full details: Docstring CoverageExplanation Docstring coverage is 20.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 5 functions across 2 files. (1 skipped: 1 unsupported.)
✨ Finishing Touches🧪 Generate unit tests (beta)
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Inline comments:
Review comments at @apps/web/src/components/chat/timelineMinimapItems.ts:
- Line 59: Update the GFM table-cell normalization replacement so it splits only
on unescaped pipe separators, then removes the escape from literal pipes;
preserve `\|` as `|` within cell text.
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apps/web/src/components/chat/timelineMinimapItems.test.tsapps/web/src/components/chat/timelineMinimapItems.ts
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ApprovabilityVerdict: Would Approve Macroscope's review found this PR approvable — This is a localized, tested fix to the existing minimap hover preview, with no schema, product-default, infrastructure, security, billing, or static-analysis configuration changes. The supplied unresolved Medium findings identify concrete formatter edge cases involving code spans, escaped table pipes, and standalone checkboxes and should be handled by the correctness gate. Not approved because:
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The regex cleanup also rewrote code spans and fenced code, split table cells on escaped pipes, and stripped literal "[x]" outside task lists. Parse the assistant text with remark and GFM, the same syntax the chat renders, and read its text nodes instead.
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Problem
The chat minimap hover preview shows the assistant reply's raw markdown source. A reply with a table previews as
| | npm | pnpm | Yarn | |---|---|---|---| | **Install** | ...instead of readable text. Links, inline code, headings, lists, and bold markers leak through the same way.compactMinimapPreviewintimelineMinimapItems.tsonly collapsed whitespace, so any markdown syntax in the reply reached the preview unchanged.Fix
Parse the assistant text with
remark-parseandremark-gfm, the same syntax the chat renders, and read the text of the resulting tree. Inline content joins directly; separate blocks (paragraphs, list items, table cells) are joined with a space. Code spans and fenced code keep their exact contents, escaped table pipes come out as|, and[x]is only dropped when GFM parses it as a task checkbox. The user prompt line is unchanged.Parsing still only runs when a preview is opened (#11181).
remark-parseandunifiedare already in the web bundle throughreact-markdown;apps/web/package.jsonnow listsremark-parseand movesunifiedfrom dev to runtime dependencies, so the lockfile only changes importer entries.This is a small, focused fix for an obvious display bug, so it is submitted without a prior issue under the small fix exception.
Verification
vp test run src/components/chat/timelineMinimapItems.test.ts(fromapps/web): 5/5 pass. New cases cover a heading, link, table, inline code, task list, blockquote, strikethrough, fenced code, code containing markdown markers, an escaped table pipe, and a literal[x]outside a list.vp run typecheckinapps/webpasses.vp lintandvp fmtpass on the changed files.vp run dev, isolated home dir): asked for a markdown table comparison and hovered the minimap with the old and new code on the same message. The screenshots below were taken with the first commit; the parser version produces the same text for this message.Not checked: desktop, which renders the same web component. Mobile has no minimap.
Screenshots
Before:
After:
Made with Claude Opus 5.5 via Claude Code, running in T3 Code.