Now if you're a regular user of Firefox, you've probably already had the opportunity to be dismayed by how you cannot copy and paste text with newlines into the search bar. All you end up with is the first line of text. I just end up typing in the search terms myself or copy and paste line by line.
Try it for yourself with the text here:
Well, all that is gonna go away in Firefox 3, which replaces newlines with spaces. Small change perhaps, but definitely needed in this fanboy's opinion.
Oh and it works for the Address bar too, only the newlines get removed instead of getting replaced with spaces. Could be useful for multi-line URLs which appear quite often in emails!