gistfile1.txt

// ==UserScript==
// @name         GitHub Clear Default Merge Method Button
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  Remove default merge method selection so user must pick each time on GitHub PR merge UI
// @author       You
// @match        https://github.com/*/*/pull/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    function clearSelectedMergeMethod() {
        // Find the merge method buttons container
        // Inspect your PR merge UI and update selector if needed
        // Usually buttons are under div with class like 'merge-methods' or similar
        const methodButtons = document.querySelectorAll('form.js-merge-pr button.js-merge-method');

        if (!methodButtons.length) return;

        methodButtons.forEach(button => {
            // Remove active or selected classes from all buttons
            button.classList.remove('selected', 'btn-primary', 'btn-selected');
            // Remove aria-pressed or similar if present
            button.setAttribute('aria-pressed', 'false');
        });

        // Optionally disable the main Merge button so it can only be clicked after selection
        const mergeButton = document.querySelector('form.js-merge-pr button[type="submit"]');
        if (mergeButton) {
            mergeButton.disabled = true;
        }

        console.log('Cleared selected merge method buttons on GitHub PR');
    }

    // Use MutationObserver to detect when merge buttons appear (they are dynamically added)
    const observer = new MutationObserver(mutations => {
        for (const mutation of mutations) {
            if (mutation.addedNodes.length) {
                clearSelectedMergeMethod();
            }
        }
    });

    observer.observe(document.body, { childList: true, subtree: true });

    // Also clear selection on initial page load
    clearSelectedMergeMethod();

    // Re-enable the Merge button when user clicks any merge method button
    document.body.addEventListener('click', e => {
        if (e.target.matches('form.js-merge-pr button.js-merge-method')) {
            const mergeButton = document.querySelector('form.js-merge-pr button[type="submit"]');
            if (mergeButton) {
                mergeButton.disabled = false;
            }
        }
    });
})();