Added support for sticky pseudo-elements; version to 1.2.9

src/contentScript.js

 	  zero exclusion matters match the URL of the current page)
 	*/
 function checkForShouldKillSticky(result) {
+	console.log("checkForShouldKillSticky");
 	var shouldKillSticky = false;
 
 	/*	If whitelist mode is active, then the matching patterns list is treated
 	‘sticky’ or ‘fixed’, and removes those elements.
 	*/
 function killSticky(root) {
+	console.log("killSticky");
 	root = root || document.querySelector("body");
 	if (killStickyIfNeeded(root) == false) {
 		root.querySelectorAll('*').forEach(element => {
 	// Compensate for full-screen paywalls.
 	restoreScrollability();
 }
+
 function killStickyIfNeeded(element) {
-	let position = getComputedStyle(element).position;
+	console.log("killStickyIfNeeded");
+	var position = getComputedStyle(element).position;
 	if (position === 'fixed' || position === 'sticky') {
 		// uBlock exception.
 		if (element.tagName == "IFRAME" && 
 		element.remove();
 
 		// Increment the stickies killed count, and update icon badge.
-		AKS.stickiesKilled++;
-		chrome.runtime.sendMessage({ newBadgeText: "" + AKS.stickiesKilled });
+		incrementKilledStickiesCount();
 		
 		return true;
 	} else {
+		var didKillSticky = false;
+
+		// The ::before pseudo-element might be sticky on its own.
+		position = getComputedStyle(element, "::before").position;
+		if (position === 'fixed' || position === 'sticky') {
+			// Kill the sticky.
+			console.log("Killing sticky!");
+			killStickyPseudoElement(element, true);
+
+			// Increment the stickies killed count, and update icon badge.
+			incrementKilledStickiesCount();
+
+			didKillSticky = true;
+		}
+
+		// The ::after pseudo-element, too, might be sticky on its own.
+		position = getComputedStyle(element, "::after").position;
+		if (position === 'fixed' || position === 'sticky') {
+			// Kill the sticky.
+			console.log("Killing sticky!");
+			killStickyPseudoElement(element, false);
+
+			// Increment the stickies killed count, and update icon badge.
+			incrementKilledStickiesCount();
+
+			didKillSticky = true;
+		}
+
 		return false;
 	}
 }
 
+function killStickyPseudoElement(element, before) {
+	console.log("killStickyPseudoElement");
+	if (!AKS.pseudoElementKillingStyleBlock) {
+		document.querySelector("head").insertAdjacentHTML("beforeend", "<style id='always-kill-sticky'></style>");
+		AKS.pseudoElementKillingStyleBlock = document.querySelector("style#always-kill-sticky");
+	}
+	
+	var id = element.id;
+	if (id == "")
+		element.id = "always-kill-sticky-killed-element-" + (++AKS.stickyElementIDs);
+		
+	let selector = `${element.tagName}#${element.id}::${(before ? 'before' : 'after')}`;
+	AKS.pseudoElementKillingStyleBlock.innerHTML = AKS.pseudoElementKillingStyleBlock.innerHTML + `${selector} { content: none; }\n`;
+}
+
+function incrementKilledStickiesCount() {
+	console.log("incrementKilledStickiesCount");
+	AKS.stickiesKilled++;
+	chrome.runtime.sendMessage({ newBadgeText: "" + AKS.stickiesKilled });
+}
+
 /*++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
 /*	Full-screen paywalls not only bring up sticky elements, they also make
 	the page un-scrollable. This ensures that the page remains scrollable.
 	*/
 function restoreScrollability() {
+	console.log("restoreScrollability");
 	document.querySelectorAll("html, body").forEach(container => {
 		container.style.setProperty("overflow-y", "auto", "important");
 	});
 	necessary, killing any newly-formed stickies.
 	*/
 function startConstantVigilance() {
+	console.log("startConstantVigilance");
 	var observer = new MutationObserver((mutationsList, observer) => {
 		window.requestIdleCallback(() => {
 			for (var mutation of mutationsList) {
 /*	Immediately kill all stickies, then commence constant vigilance.
 	*/
 function beginKillingStickies() {
+	console.log("beginKillingStickies");
 	if (!window.AKS) window.AKS = { stickiesKilled: 0 };
 
 	window.requestIdleCallback(() => {
 /******************/
 
 function initialize() {
+	console.log("initialize");
 	chrome.storage.local.get([ "matchingPatterns", "exclusionPatterns", "mode" ], (result) => {
 		let shouldKillSticky = checkForShouldKillSticky(result);
 		updateIcon(shouldKillSticky);

src/platform/chrome/manifest.json

 {
 	"manifest_version":	2,
 	"name":				"AlwaysKillSticky",
-	"version":			"1.2.8",
+	"version":			"1.2.9",
 	"description":		"Get rid of sticky elements on websites - permanently!",
 	"author":			"Said Achmiz",
 	"homepage_url":		"https://git.sr.ht/~achmizs/AlwaysKillSticky.git",

src/platform/firefox/manifest.json

 {
 	"manifest_version":				2,
 	"name":							"AlwaysKillSticky",
-	"version":						"1.2.8",
+	"version":						"1.2.9",
 	"description":					"Get rid of sticky elements on websites - permanently!",
 	"author":						"Said Achmiz",
 	"browser_specific_settings":	{