--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/mozilla-bmo1822730.patch Sat Sep 23 09:32:28 2023 +0200
@@ -0,0 +1,52 @@
+# HG changeset patch
+# User Rob Krum <biggestsonicfan@gmail.com>
+# Date 1695432215 25200
+# Fri Sep 22 18:23:35 2023 -0700
+# Node ID e6a8a9f0956d124e8de34eb4bcf09d8e17077d9d
+# Parent 677cbf2e64cdcd3a93e644f781be2bdc2529ba1a
+Bug 1822730 - Add basic blob protocol handling for blob URIs that contain parsable http/s protocols
+
+diff --git a/toolkit/mozapps/downloads/DownloadLastDir.sys.mjs b/toolkit/mozapps/downloads/DownloadLastDir.sys.mjs
+--- a/toolkit/mozapps/downloads/DownloadLastDir.sys.mjs
++++ b/toolkit/mozapps/downloads/DownloadLastDir.sys.mjs
+@@ -221,11 +221,13 @@ export class DownloadLastDir {
+
+ /**
+ * Pre-processor to extract a domain name to be used with the content-prefs
+- * service. This specially handles data and file URIs so that the download
+- * dirs are recalled in a more consistent way:
++ * service. This specially handles data, file and blob URIs so that the
++ * download dirs are recalled in a more consistent way:
+ * - all file:/// URIs share the same folder
+ * - data: URIs share a folder per mime-type. If a mime-type is not
+ * specified text/plain is assumed.
++ * - blob: blob URIs are tested for http/https and the blob protocol
++ * is stripped.
+ * In any other case the original URL is returned as a string and ContentPrefs
+ * will do its usual parsing.
+ *
+@@ -234,6 +236,9 @@ export class DownloadLastDir {
+ */
+ #cpsGroupFromURL(url) {
+ if (typeof url == "string") {
++ if (url.startsWith("blob:http://") || url.startsWith("blob:https://")) {
++ url = url.replace("blob:", "");
++ }
+ url = new URL(url);
+ } else if (url instanceof Ci.nsIURI) {
+ url = URL.fromURI(url);
+@@ -241,6 +246,14 @@ export class DownloadLastDir {
+ if (!URL.isInstance(url)) {
+ return url;
+ }
++ if (url.protocol == "blob:") {
++ if (
++ url.href.startsWith("blob:http://") ||
++ url.href.startsWith("blob:https://")
++ ) {
++ return url.href.replace("blob:", "");
++ }
++ }
+ if (url.protocol == "data:") {
+ return url.href.match(/^data:[^;,]*/i)[0].replace(/:$/, ":text/plain");
+ }