I hate this behavior in iOS 7 Safari so much. Whenever I want to modify the URL, it's a huge pain (on HN specific links, usually) -- there's no way to edit the parameters at the end of a URL (that I've found), and typing the whole long url on a phone or tablet isn't fun (especially when it includes lots of parameters, rather than just a simple path). It's one of the few things an alternate browser on iOS actually fixes.
In Safari, you can tap the address bar and hold down on the url to bring up the pointer and scroll over to whatever you want to edit/copy. It's the same behavior in Chrome on iOS7 (apart from the fact that the pointer is at the beginning of the URL in Safari and in the end in Chrome, which albeit, is preferable).
