How to revert Firefox 14 awesome bar auto-completion behaviour / switch off URL autofill

Firefox 14 introduced a change to how the “awesome bar” (aka location bar) works – it now auto-completes in place. A lot of other browsers do this, so I guess it’s consistent, but I don’t like it – I find it much faster to recall my most commonly visited sites by typing a few letters (usually 3 is enough) which often occur in the *middle* of the URL, while the auto-complete always works from the *beginning* of the URL, and I find it confusing to be offered a suggestion which isn’t what I’m looking for. I’d rather see only the letters I’ve typed in the field, and a list of suggestions below.

I eventually found out how to revert to the old behaviour, but it wasn’t easy and involved being sent round in circles a few times. So, for your benefit, here’s how:

1. Type about:config in the awesome bar / location bar.
2. Use the Search field to locate the preference browser.urlbar.autoFill
3. It is true by default in Firefox 14. Double-click to set to false.