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Codecov missing-base minimal repro repository

This repo template reproduces merge-heavy default-branch history with partial flag uploads, so we can validate base-parent behavior and test fixes.

What this template includes

  • Minimal Python code and tests with two coverage flag groups:
    • core
    • ext
  • codecov.yml configured with carryforward defaults.
  • GitHub Actions workflows to:
    • generate many PRs quickly,
    • merge those PRs in a batch,
    • produce main-branch history with intermittent partial uploads.

Workflows

1) CI

Workflow: .github/workflows/ci.yml

  • Manual dispatch.
  • Select test_suite as core, ext, or both.

2) Create stress PR batches (30-60)

Workflow: .github/workflows/create-stress-batch-prs.yml (manual workflow_dispatch)

Suggested inputs:

  • count: 40
  • base: main

This generates merge pressure for base-parent stress testing.

3) Merge PRs in batch

Workflow: .github/workflows/merge-batch-prs.yml (manual workflow_dispatch)

This workflow merges all open PRs in the repository.

This simulates batched landings and generates the merge topology to stress base selection.

Local CLI alternative (optional)

Use the merge script if you prefer local control with gh CLI:

bash scripts/merge_batch_prs.sh main 1000

Validation checklist

  1. Confirm main has many merge commits:
git log --graph --oneline --decorate --first-parent --max-count=80 main
  1. In Codecov, inspect consecutive main commits and check:
  • whether base commit is present,
  • whether comparisons and carryforward behavior are consistent across stress merges.

Notes

  • This template is intentionally minimal to share with Codecov support/engineering.
  • count can be inscreased to 30+ to make merge topology more stressful.
  • Fast stress profile: run create-stress-batch-prs.yml with count=40, then run merge-batch-prs.yml. Then run ci.yml to upload coverage to Codecov on the head of the main branch.

About

This repo reproduces merge-heavy default-branch history with partial flag uploads

Resources

Readme
Activity

Stars

0 stars

Watchers

0 watching

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0 forks
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, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

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Repository files navigation
Codecov missing-base minimal repro repository
This repo template reproduces merge-heavy default-branch history with partial flag uploads, so we can validate base-parent behavior and test fixes.
What this template includes
  • Minimal Python code and tests with two coverage flag groups:

    • core
    • ext
  • codecov.yml configured with carryforward defaults.
  • GitHub Actions workflows to:

    • generate many PRs quickly,
    • merge those PRs in a batch,
    • produce main-branch history with intermittent partial uploads.
Workflows
1) CI
Workflow: .github/workflows/ci.yml
  • Manual dispatch.
  • Select test_suite as core, ext, or both.
2) Create stress PR batches (30-60)
Workflow: .github/workflows/create-stress-batch-prs.yml (manual workflow_dispatch)
Suggested inputs:
  • count: 40
  • base: main
This generates merge pressure for base-parent stress testing.
3) Merge PRs in batch
Workflow: .github/workflows/merge-batch-prs.yml (manual workflow_dispatch)
This workflow merges all open PRs in the repository.
This simulates batched landings and generates the merge topology to stress base selection.
Local CLI alternative (optional)
Use the merge script if you prefer local control with gh CLI:
bash scripts/merge_batch_prs.sh main 1000
Validation checklist
  1. Confirm main has many merge commits:
git log --graph --oneline --decorate --first-parent --max-count=80 main
  1. In Codecov, inspect consecutive main commits and check:
  • whether base commit is present,
  • whether comparisons and carryforward behavior are consistent across stress merges.
Notes
  • This template is intentionally minimal to share with Codecov support/engineering.
  • count can be inscreased to 30+ to make merge topology more stressful.
  • Fast stress profile: run create-stress-batch-prs.yml with count=40, then run merge-batch-prs.yml. Then run ci.yml to upload coverage to Codecov on the head of the main branch.
About
This repo reproduces merge-heavy default-branch history with partial flag uploads
Resources
Readme
Activity
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
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Contributors
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
Codecov missing-base minimal repro repository
This repo template reproduces merge-heavy default-branch history with partial flag uploads, so we can validate base-parent behavior and test fixes.
What this template includes
  • Minimal Python code and tests with two coverage flag groups:

    • core
    • ext
  • codecov.yml configured with carryforward defaults.
  • GitHub Actions workflows to:

    • generate many PRs quickly,
    • merge those PRs in a batch,
    • produce main-branch history with intermittent partial uploads.
Workflows
1) CI
Workflow: .github/workflows/ci.yml
  • Manual dispatch.
  • Select test_suite as core, ext, or both.
2) Create stress PR batches (30-60)
Workflow: .github/workflows/create-stress-batch-prs.yml (manual workflow_dispatch)
Suggested inputs:
  • count: 40
  • base: main
This generates merge pressure for base-parent stress testing.
3) Merge PRs in batch
Workflow: .github/workflows/merge-batch-prs.yml (manual workflow_dispatch)
This workflow merges all open PRs in the repository.
This simulates batched landings and generates the merge topology to stress base selection.
Local CLI alternative (optional)
Use the merge script if you prefer local control with gh CLI:
bash scripts/merge_batch_prs.sh main 1000
Validation checklist
  1. Confirm main has many merge commits:
git log --graph --oneline --decorate --first-parent --max-count=80 main
  1. In Codecov, inspect consecutive main commits and check:
  • whether base commit is present,
  • whether comparisons and carryforward behavior are consistent across stress merges.
Notes
  • This template is intentionally minimal to share with Codecov support/engineering.
  • count can be inscreased to 30+ to make merge topology more stressful.
  • Fast stress profile: run create-stress-batch-prs.yml with count=40, then run merge-batch-prs.yml. Then run ci.yml to upload coverage to Codecov on the head of the main branch.
About
This repo reproduces merge-heavy default-branch history with partial flag uploads
Resources
Readme
Activity
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
Codecov missing-base minimal repro repository
This repo template reproduces merge-heavy default-branch history with partial flag uploads, so we can validate base-parent behavior and test fixes.
What this template includes
  • Minimal Python code and tests with two coverage flag groups:

    • core
    • ext
  • codecov.yml configured with carryforward defaults.
  • GitHub Actions workflows to:

    • generate many PRs quickly,
    • merge those PRs in a batch,
    • produce main-branch history with intermittent partial uploads.
Workflows
1) CI
Workflow: .github/workflows/ci.yml
  • Manual dispatch.
  • Select test_suite as core, ext, or both.
2) Create stress PR batches (30-60)
Workflow: .github/workflows/create-stress-batch-prs.yml (manual workflow_dispatch)
Suggested inputs:
  • count: 40
  • base: main
This generates merge pressure for base-parent stress testing.
3) Merge PRs in batch
Workflow: .github/workflows/merge-batch-prs.yml (manual workflow_dispatch)
This workflow merges all open PRs in the repository.
This simulates batched landings and generates the merge topology to stress base selection.
Local CLI alternative (optional)
Use the merge script if you prefer local control with gh CLI:
bash scripts/merge_batch_prs.sh main 1000
Validation checklist
  1. Confirm main has many merge commits:
git log --graph --oneline --decorate --first-parent --max-count=80 main
  1. In Codecov, inspect consecutive main commits and check:
  • whether base commit is present,
  • whether comparisons and carryforward behavior are consistent across stress merges.
Notes
  • This template is intentionally minimal to share with Codecov support/engineering.
  • count can be inscreased to 30+ to make merge topology more stressful.
  • Fast stress profile: run create-stress-batch-prs.yml with count=40, then run merge-batch-prs.yml. Then run ci.yml to upload coverage to Codecov on the head of the main branch.
About
This repo reproduces merge-heavy default-branch history with partial flag uploads
Resources
Readme
Activity
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

Skip to content
BranchesTags
Repository files navigation
Codecov missing-base minimal repro repository
This repo template reproduces merge-heavy default-branch history with partial flag uploads, so we can validate base-parent behavior and test fixes.
What this template includes
  • Minimal Python code and tests with two coverage flag groups:

    • core
    • ext
  • codecov.yml configured with carryforward defaults.
  • GitHub Actions workflows to:

    • generate many PRs quickly,
    • merge those PRs in a batch,
    • produce main-branch history with intermittent partial uploads.
Workflows
1) CI
Workflow: .github/workflows/ci.yml
  • Manual dispatch.
  • Select test_suite as core, ext, or both.
2) Create stress PR batches (30-60)
Workflow: .github/workflows/create-stress-batch-prs.yml (manual workflow_dispatch)
Suggested inputs:
  • count: 40
  • base: main
This generates merge pressure for base-parent stress testing.
3) Merge PRs in batch
Workflow: .github/workflows/merge-batch-prs.yml (manual workflow_dispatch)
This workflow merges all open PRs in the repository.
This simulates batched landings and generates the merge topology to stress base selection.
Local CLI alternative (optional)
Use the merge script if you prefer local control with gh CLI:
bash scripts/merge_batch_prs.sh main 1000
Validation checklist
  1. Confirm main has many merge commits:
git log --graph --oneline --decorate --first-parent --max-count=80 main
  1. In Codecov, inspect consecutive main commits and check:
  • whether base commit is present,
  • whether comparisons and carryforward behavior are consistent across stress merges.
Notes
  • This template is intentionally minimal to share with Codecov support/engineering.
  • count can be inscreased to 30+ to make merge topology more stressful.
  • Fast stress profile: run create-stress-batch-prs.yml with count=40, then run merge-batch-prs.yml. Then run ci.yml to upload coverage to Codecov on the head of the main branch.
About
This repo reproduces merge-heavy default-branch history with partial flag uploads
Resources
Readme
Activity
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
Codecov missing-base minimal repro repository
This repo template reproduces merge-heavy default-branch history with partial flag uploads, so we can validate base-parent behavior and test fixes.
What this template includes
  • Minimal Python code and tests with two coverage flag groups:

    • core
    • ext
  • codecov.yml configured with carryforward defaults.
  • GitHub Actions workflows to:

    • generate many PRs quickly,
    • merge those PRs in a batch,
    • produce main-branch history with intermittent partial uploads.
Workflows
1) CI
Workflow: .github/workflows/ci.yml
  • Manual dispatch.
  • Select test_suite as core, ext, or both.
2) Create stress PR batches (30-60)
Workflow: .github/workflows/create-stress-batch-prs.yml (manual workflow_dispatch)
Suggested inputs:
  • count: 40
  • base: main
This generates merge pressure for base-parent stress testing.
3) Merge PRs in batch
Workflow: .github/workflows/merge-batch-prs.yml (manual workflow_dispatch)
This workflow merges all open PRs in the repository.
This simulates batched landings and generates the merge topology to stress base selection.
Local CLI alternative (optional)
Use the merge script if you prefer local control with gh CLI:
bash scripts/merge_batch_prs.sh main 1000
Validation checklist
  1. Confirm main has many merge commits:
git log --graph --oneline --decorate --first-parent --max-count=80 main
  1. In Codecov, inspect consecutive main commits and check:
  • whether base commit is present,
  • whether comparisons and carryforward behavior are consistent across stress merges.
Notes
  • This template is intentionally minimal to share with Codecov support/engineering.
  • count can be inscreased to 30+ to make merge topology more stressful.
  • Fast stress profile: run create-stress-batch-prs.yml with count=40, then run merge-batch-prs.yml. Then run ci.yml to upload coverage to Codecov on the head of the main branch.
About
This repo reproduces merge-heavy default-branch history with partial flag uploads
Resources
Readme
Activity
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
Codecov missing-base minimal repro repository
This repo template reproduces merge-heavy default-branch history with partial flag uploads, so we can validate base-parent behavior and test fixes.
What this template includes
  • Minimal Python code and tests with two coverage flag groups:

    • core
    • ext
  • codecov.yml configured with carryforward defaults.
  • GitHub Actions workflows to:

    • generate many PRs quickly,
    • merge those PRs in a batch,
    • produce main-branch history with intermittent partial uploads.
Workflows
1) CI
Workflow: .github/workflows/ci.yml
  • Manual dispatch.
  • Select test_suite as core, ext, or both.
2) Create stress PR batches (30-60)
Workflow: .github/workflows/create-stress-batch-prs.yml (manual workflow_dispatch)
Suggested inputs:
  • count: 40
  • base: main
This generates merge pressure for base-parent stress testing.
3) Merge PRs in batch
Workflow: .github/workflows/merge-batch-prs.yml (manual workflow_dispatch)
This workflow merges all open PRs in the repository.
This simulates batched landings and generates the merge topology to stress base selection.
Local CLI alternative (optional)
Use the merge script if you prefer local control with gh CLI:
bash scripts/merge_batch_prs.sh main 1000
Validation checklist
  1. Confirm main has many merge commits:
git log --graph --oneline --decorate --first-parent --max-count=80 main
  1. In Codecov, inspect consecutive main commits and check:
  • whether base commit is present,
  • whether comparisons and carryforward behavior are consistent across stress merges.
Notes
  • This template is intentionally minimal to share with Codecov support/engineering.
  • count can be inscreased to 30+ to make merge topology more stressful.
  • Fast stress profile: run create-stress-batch-prs.yml with count=40, then run merge-batch-prs.yml. Then run ci.yml to upload coverage to Codecov on the head of the main branch.
About
This repo reproduces merge-heavy default-branch history with partial flag uploads
Resources
Readme
Activity
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

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Codecov missing-base minimal repro repository
This repo template reproduces merge-heavy default-branch history with partial flag uploads, so we can validate base-parent behavior and test fixes.
What this template includes
  • Minimal Python code and tests with two coverage flag groups:

    • core
    • ext
  • codecov.yml configured with carryforward defaults.
  • GitHub Actions workflows to:

    • generate many PRs quickly,
    • merge those PRs in a batch,
    • produce main-branch history with intermittent partial uploads.
Workflows
1) CI
Workflow: .github/workflows/ci.yml
  • Manual dispatch.
  • Select test_suite as core, ext, or both.
2) Create stress PR batches (30-60)
Workflow: .github/workflows/create-stress-batch-prs.yml (manual workflow_dispatch)
Suggested inputs:
  • count: 40
  • base: main
This generates merge pressure for base-parent stress testing.
3) Merge PRs in batch
Workflow: .github/workflows/merge-batch-prs.yml (manual workflow_dispatch)
This workflow merges all open PRs in the repository.
This simulates batched landings and generates the merge topology to stress base selection.
Local CLI alternative (optional)
Use the merge script if you prefer local control with gh CLI:
bash scripts/merge_batch_prs.sh main 1000
Validation checklist
  1. Confirm main has many merge commits:
git log --graph --oneline --decorate --first-parent --max-count=80 main
  1. In Codecov, inspect consecutive main commits and check:
  • whether base commit is present,
  • whether comparisons and carryforward behavior are consistent across stress merges.
Notes
  • This template is intentionally minimal to share with Codecov support/engineering.
  • count can be inscreased to 30+ to make merge topology more stressful.
  • Fast stress profile: run create-stress-batch-prs.yml with count=40, then run merge-batch-prs.yml. Then run ci.yml to upload coverage to Codecov on the head of the main branch.
About
This repo reproduces merge-heavy default-branch history with partial flag uploads
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