Stacked GitHub PRs: Auto-switch between "single" and "overlap" workflows - #1408

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rejc2:rejc2/auto-switch-single-overlap-workflows
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Stacked GitHub PRs: Auto-switch between "single" and "overlap" workflows#1408
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rejc2:rejc2/auto-switch-single-overlap-workflows

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@rejc2rejc2 commented Aug 8, 2026

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When submitting stacked GitHub PRs, automatically switch between "single" and "overlap" workflows based on whether the repo is a fork or not.

Because the SINGLE workflow matches the pattern needed for GitHub's native PR stacks, it makes for a good default.

However, the SINGLE workflow generally doesn't work across repo forks – the OVERLAP workflow is needed here, which is why it is the current default.

This PR automatically switches between the SINGLE workflow (by default) for non-forked repos, and the OVERLAP workflow for forked repos. (The original config stays in place, so OVERLAP workflow can still be chosed for all repos, but the default is SINGLE.)

("SINGLE" workflow means each PR in the stack targets the head of the PR below it in the stack; "OVERLAP" workflow means every PR targets the main branch.)

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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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Stacked GitHub PRs: Auto-switch between "single" and "overlap" workflows - #1408
Open
rejc2 wants to merge 2 commits into
facebook:mainfrom 
rejc2:rejc2/auto-switch-single-overlap-workflows
Open
Stacked GitHub PRs: Auto-switch between "single" and "overlap" workflows#1408
rejc2 wants to merge 2 commits into
facebook:mainfrom 
rejc2:rejc2/auto-switch-single-overlap-workflows
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Aug 8, 2026

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When submitting stacked GitHub PRs, automatically switch between "single" and "overlap" workflows based on whether the repo is a fork or not.
Because the SINGLE workflow matches the pattern needed for GitHub's native PR stacks, it makes for a good default.
However, the SINGLE workflow generally doesn't work across repo forks – the OVERLAP workflow is needed here, which is why it is the current default.
This PR automatically switches between the SINGLE workflow (by default) for non-forked repos, and the OVERLAP workflow for forked repos. (The original config stays in place, so OVERLAP workflow can still be chosed for all repos, but the default is SINGLE.)
("SINGLE" workflow means each PR in the stack targets the head of the PR below it in the stack; "OVERLAP" workflow means every PR targets the main branch.)
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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
Stacked GitHub PRs: Auto-switch between "single" and "overlap" workflows - #1408
Open
rejc2 wants to merge 2 commits into
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rejc2:rejc2/auto-switch-single-overlap-workflows
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Stacked GitHub PRs: Auto-switch between "single" and "overlap" workflows#1408
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rejc2:rejc2/auto-switch-single-overlap-workflows
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When submitting stacked GitHub PRs, automatically switch between "single" and "overlap" workflows based on whether the repo is a fork or not.
Because the SINGLE workflow matches the pattern needed for GitHub's native PR stacks, it makes for a good default.
However, the SINGLE workflow generally doesn't work across repo forks – the OVERLAP workflow is needed here, which is why it is the current default.
This PR automatically switches between the SINGLE workflow (by default) for non-forked repos, and the OVERLAP workflow for forked repos. (The original config stays in place, so OVERLAP workflow can still be chosed for all repos, but the default is SINGLE.)
("SINGLE" workflow means each PR in the stack targets the head of the PR below it in the stack; "OVERLAP" workflow means every PR targets the main branch.)
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, '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
Stacked GitHub PRs: Auto-switch between "single" and "overlap" workflows - #1408
Open
rejc2 wants to merge 2 commits into
facebook:mainfrom 
rejc2:rejc2/auto-switch-single-overlap-workflows
Open
Stacked GitHub PRs: Auto-switch between "single" and "overlap" workflows#1408
rejc2 wants to merge 2 commits into
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rejc2:rejc2/auto-switch-single-overlap-workflows
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When submitting stacked GitHub PRs, automatically switch between "single" and "overlap" workflows based on whether the repo is a fork or not.
Because the SINGLE workflow matches the pattern needed for GitHub's native PR stacks, it makes for a good default.
However, the SINGLE workflow generally doesn't work across repo forks – the OVERLAP workflow is needed here, which is why it is the current default.
This PR automatically switches between the SINGLE workflow (by default) for non-forked repos, and the OVERLAP workflow for forked repos. (The original config stays in place, so OVERLAP workflow can still be chosed for all repos, but the default is SINGLE.)
("SINGLE" workflow means each PR in the stack targets the head of the PR below it in the stack; "OVERLAP" workflow means every PR targets the main branch.)
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, '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
Stacked GitHub PRs: Auto-switch between "single" and "overlap" workflows - #1408
Open
rejc2 wants to merge 2 commits into
facebook:mainfrom 
rejc2:rejc2/auto-switch-single-overlap-workflows
Open
Stacked GitHub PRs: Auto-switch between "single" and "overlap" workflows#1408
rejc2 wants to merge 2 commits into
facebook:mainfrom 
rejc2:rejc2/auto-switch-single-overlap-workflows
Conversation
@rejc2
@rejc2rejc2
commented
Aug 8, 2026

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Contributor
When submitting stacked GitHub PRs, automatically switch between "single" and "overlap" workflows based on whether the repo is a fork or not.
Because the SINGLE workflow matches the pattern needed for GitHub's native PR stacks, it makes for a good default.
However, the SINGLE workflow generally doesn't work across repo forks – the OVERLAP workflow is needed here, which is why it is the current default.
This PR automatically switches between the SINGLE workflow (by default) for non-forked repos, and the OVERLAP workflow for forked repos. (The original config stays in place, so OVERLAP workflow can still be chosed for all repos, but the default is SINGLE.)
("SINGLE" workflow means each PR in the stack targets the head of the PR below it in the stack; "OVERLAP" workflow means every PR targets the main branch.)
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, '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
Stacked GitHub PRs: Auto-switch between "single" and "overlap" workflows - #1408
Open
rejc2 wants to merge 2 commits into
facebook:mainfrom 
rejc2:rejc2/auto-switch-single-overlap-workflows
Open
Stacked GitHub PRs: Auto-switch between "single" and "overlap" workflows#1408
rejc2 wants to merge 2 commits into
facebook:mainfrom 
rejc2:rejc2/auto-switch-single-overlap-workflows
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@rejc2
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commented
Aug 8, 2026

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When submitting stacked GitHub PRs, automatically switch between "single" and "overlap" workflows based on whether the repo is a fork or not.
Because the SINGLE workflow matches the pattern needed for GitHub's native PR stacks, it makes for a good default.
However, the SINGLE workflow generally doesn't work across repo forks – the OVERLAP workflow is needed here, which is why it is the current default.
This PR automatically switches between the SINGLE workflow (by default) for non-forked repos, and the OVERLAP workflow for forked repos. (The original config stays in place, so OVERLAP workflow can still be chosed for all repos, but the default is SINGLE.)
("SINGLE" workflow means each PR in the stack targets the head of the PR below it in the stack; "OVERLAP" workflow means every PR targets the main branch.)
@meta-codesync
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, '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
Stacked GitHub PRs: Auto-switch between "single" and "overlap" workflows - #1408
Open
rejc2 wants to merge 2 commits into
facebook:mainfrom 
rejc2:rejc2/auto-switch-single-overlap-workflows
Open
Stacked GitHub PRs: Auto-switch between "single" and "overlap" workflows#1408
rejc2 wants to merge 2 commits into
facebook:mainfrom 
rejc2:rejc2/auto-switch-single-overlap-workflows
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@rejc2
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commented
Aug 8, 2026

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When submitting stacked GitHub PRs, automatically switch between "single" and "overlap" workflows based on whether the repo is a fork or not.
Because the SINGLE workflow matches the pattern needed for GitHub's native PR stacks, it makes for a good default.
However, the SINGLE workflow generally doesn't work across repo forks – the OVERLAP workflow is needed here, which is why it is the current default.
This PR automatically switches between the SINGLE workflow (by default) for non-forked repos, and the OVERLAP workflow for forked repos. (The original config stays in place, so OVERLAP workflow can still be chosed for all repos, but the default is SINGLE.)
("SINGLE" workflow means each PR in the stack targets the head of the PR below it in the stack; "OVERLAP" workflow means every PR targets the main branch.)
@meta-codesync
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, '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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Stacked GitHub PRs: Auto-switch between "single" and "overlap" workflows - #1408
Open
rejc2 wants to merge 2 commits into
facebook:mainfrom 
rejc2:rejc2/auto-switch-single-overlap-workflows
Open
Stacked GitHub PRs: Auto-switch between "single" and "overlap" workflows#1408
rejc2 wants to merge 2 commits into
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rejc2:rejc2/auto-switch-single-overlap-workflows
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@rejc2
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commented
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When submitting stacked GitHub PRs, automatically switch between "single" and "overlap" workflows based on whether the repo is a fork or not.
Because the SINGLE workflow matches the pattern needed for GitHub's native PR stacks, it makes for a good default.
However, the SINGLE workflow generally doesn't work across repo forks – the OVERLAP workflow is needed here, which is why it is the current default.
This PR automatically switches between the SINGLE workflow (by default) for non-forked repos, and the OVERLAP workflow for forked repos. (The original config stays in place, so OVERLAP workflow can still be chosed for all repos, but the default is SINGLE.)
("SINGLE" workflow means each PR in the stack targets the head of the PR below it in the stack; "OVERLAP" workflow means every PR targets the main branch.)
@meta-codesync
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This pull request has been imported. If you are a Meta employee, you can view this in D115309565. (Because this pull request was imported automatically, there will not be any future comments.)
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