heh. I did what all good artists do: I shamelessly stole the idea from somebody else (reddit in this case)

Yeah, I personally use violentmonkey, but its usershare is a lot less than grease or tamper. Fortunately, this script “should” work with any of them…

Alright then, let’s avoid right arrow for now. Here is a new and improved version with an Observer that will (or at least should) move the button for dynamically loaded comments as well. Note that the Observer piece was generated by ChatGPT.

// ==UserScript==
// @name         Lemmy to Old.Reddit Re-format (Observer)
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  Reformat widescreen desktop to look more like Reddit
// @author       mershed_perderders
// @match        https://*/*
// @grant        none
// ==/UserScript==

(function() {
	'use strict';

	var isLemmy = document.head.querySelector("[name~=Description][content]").content === "Lemmy";

	function GM_addStyle(css) {
		const style = document.getElementById("GM_addStyleBy8626") || (function() {
			const style = document.createElement('style');
			style.type = 'text/css';
			style.id = "GM_addStyleBy8626";
			document.head.appendChild(style);
			return style;
		})();
		const sheet = style.sheet;
		sheet.insertRule(css, (sheet.rules || sheet.cssRules || []).length);
	}

	function MoveCommentCollapseButton(container) {
		var firstTargDiv = container.querySelector(".btn.btn-sm.text-muted");
		var secondTargDiv = container.querySelector(".mr-2");
		//-- Swap last to first.
		container.insertBefore(firstTargDiv, secondTargDiv);
	}

	function ApplyMoveCommentCollapseButton(element) {
		const observer = new MutationObserver(function(mutationsList) {
			for (let mutation of mutationsList) {
				if (mutation.type === 'childList') {
					for (let addedNode of mutation.addedNodes) {
						if (addedNode.matches('.d-flex.flex-wrap.align-items-center.text-muted.small')) {
							MoveCommentCollapseButton(addedNode);
						}
					}
				}
			}
		});

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

	if (isLemmy) {
		GM_addStyle(".container-fluid, .container-lg, .container-md, .container-sm, .container-xl {   margin-right: unset !important; margin-left: unset !important;}");
		GM_addStyle(".container, .container-lg, .container-md, .container-sm, .container-xl { max-width: 100% !important; }");
		GM_addStyle(".col-md-4 { flex: 0 0 20% !important; max-width: 20%; }");
		GM_addStyle(".col-md-8 { flex: 0 0 80% !important; max-width: 80%; }");
		GM_addStyle(".col-sm-2 { flex: 0 0 9% !important; max-width: 10%; }");
		GM_addStyle(".col-1 { flex: 0 0 4% !important; max-width: 5%; }");
		GM_addStyle(".mb-2, .my-2 { margin-bottom: 0.3rem !important; }");
		GM_addStyle(".thumbnail {   min-height: 100px; max-height: 125px; }");
		GM_addStyle(".mb-3, .my-3 { margin-bottom: .2rem !important; }");
		GM_addStyle(".mt-3, .my-3 { margin-top: .2rem !important; }");
		GM_addStyle(".vote-bar { margin-top: 15px !important; }");
		GM_addStyle(".comments {  margin-left: 20px; }");

		// Move comment collapse buttons for existing elements
		var divList = document.querySelectorAll(".d-flex.flex-wrap.align-items-center.text-muted.small");
		divList.forEach(MoveCommentCollapseButton);

		// Apply MoveCommentCollapseButton to dynamically loaded elements
		ApplyMoveCommentCollapseButton(document.documentElement);
	}
})();

Instead of querying the description (which I’m not sure is hardcoded or not), a better way to do this would probably be just if (window.lemmyConfig). To me it seems pretty unused and might be gone in later versions, but it exists now and we can take advantage of it.

There is also window.isoData which is probably bit more reliable, but no idea if that naming is Lemmy’s or from a framework Lemmy happens to use. Unlike lemmyConfig though it has plenty of data inside which might make it a lot more reliable if you dig deep enough.

Thank you God! Edit made!

got it. For whatever reason GM doesn’t like the @grant statement. I’ve added the addStyles fucntion back in and it should work.

Get the updated script here: https://github.com/soundjester/lemmy_monkey/blob/main/old.reddit

all changes are going to the github respository here: https://github.com/soundjester/lemmy_monkey/blob/main/old.reddit

it’s just easier for me to manage there