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  "state": "merged",
  "title": "Fix crash when problemMatcher has empty pattern array",
  "number": 256612,
  "source": "aidev",
  "commits": 3,
  "debrief": "Copilot submits a fix in microsoft/vscode for a crash that occurs when a problemMatcher contains an empty pattern array. The change touches three files across three commits, with 18 additions and two deletions. Seven reviews were logged and four review comments, with no change requests. It merged clean after 116.22 hours.",
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  "opened_at": "2025-07-18T00:18:45+00:00",
  "task_type": "fix",
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  "confidence": "dataset",
  "updated_at": "2026-11-03T21:28:43.494973+00:00",
  "enriched_at": null,
  "body_excerpt": "## Problem\n\nWhen a task configuration contains a `problemMatcher` with an empty `pattern: []` array, VS Code crashes with the error:\n\n```\nCannot read properties of undefined (reading 'kind')\n```\n\nThis occurs when users define tasks like:\n\n```json\n{\n  \"problemMatcher\": [\n    {\n      \"applyTo\": \"allDo",
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  "og_generated_at": "2026-11-03T21:28:43.494973+00:00",
  "reviewer_excerpt": "@meganrogge I think these are pretty safe to go in, and would prevent us from crashing of trying to access `values[0].kind ` when `values` itself",
  "review_comment_count": 4,
  "reviewer_excerpt_url": "https://github.com/microsoft/vscode/pull/256612#issuecomment-3099765921"
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 "repo": {
  "name": "vscode",
  "owner": "microsoft",
  "stars": 195176,
  "license": "MIT",
  "full_name": "microsoft/vscode",
  "primary_language": "TypeScript"
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 "related": [
  {
   "agent": "github-copilot",
   "state": "closed",
   "title": "[WIP] Fixing Issue #257872 in VSCode Repository",
   "number": 258382,
   "outcome": "burn",
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   "additions": 0,
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   "opened_at": "2025-07-29T01:42:01+00:00",
   "task_type": "fix",
   "files_changed": 1,
   "hours_to_merge": null
  },
  {
   "agent": "github-copilot",
   "state": "merged",
   "title": "Set triggerCommandOnProviderChange default to false to fix #256458",
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   "title": "Fix Pull Request card issue number wrapping in chat interface",
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   "merged_at": "2025-07-28T09:33:14+00:00",
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 "pr_url": "https://github.com/microsoft/vscode/pull/256612",
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