Why the “complex” qualifier? The code responsible for the incorrect favicon URL bug is very simple, and part of the Firefox codebase not WebKit: https://github

Why the “complex” qualifier? The code responsible for the incorrect favicon URL bug is very simple, and part of the Firefox codebase not WebKit: https://github.com/mozilla-mobile/firefox-ios/blob/bd589c194fbb5f16bc3748a276762f92b0ce4185/BrowserKit/Sources/SiteImageView/FaviconURLProcessing/URLFetcher/FaviconURLFetcher.swift#L66 https://github.com/mozilla-mobile/firefox-ios/blob/bd589c194... Firefox on iOS has about 200k lines of Swift. As a rough rule of thumb, everything that isn’t directly related to rendering something within the page or executing JavaScript is Firefox code not WebKit code. So bookmarks, syncing, tabs, etc.