Fixes things like double spaces and newlines (even though you can't see newlines, it messes up fields when you try to login)
Creative Commons Attribution-Noncommercial 3.0 United States License
Ever tried to enter a username or password that you copied from online text and it failed even though it was the correct user/pass? That's because sometimes, Firefox selects a new line character too and it messes up the input, even though you can't see it. This fixes that, and also changes double spaces to single spaces as an added bonus.