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At some point fairly recently, the URLs shown in the Firefox location bar dropped the protocol prefix -- urls appear as "" not "" -- if the site is https://... the prefix does appear, but I'd like to see it all the time.

How do I get that back?

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Note that with version 8, copying the URL from the address bar the http:// prefix is actually copied, event though not displayed. Thus I can live with it not being displayed. In version 7 however, it is not copied, which is a major annoyance. – kynan Jan 21 '12 at 1:09
up vote 16 down vote accepted

Its considered a "feature" since version 7.

To turn it off type on the address bar about:config, look for browser.urlbar.trimURLs and set the value to false.

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...Emphasis on the quotes around "feature"... – Izkata Jan 20 '12 at 22:56
As someone who teaches people how to use computers and the internet, this is part of an exasperating trend. It makes it just a little harder to walk students through the anatomy of a URL. – Amanda Jan 30 '12 at 1:46
@lzkata As with many features, some people like it and some people don't. My dad would still be using Windows 3.1 if he could be, he hates change so much. – Kazark Mar 14 '12 at 15:37

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