Comment 27 for bug 78510

It does completion but it is broken. Am I making this up because I am bored? You have screenshots above of each step and they still work for me. Yet another example:

$ cd ~
$ mkdir Examples
$ touch Examples/foofoobar
$ touch Examples/foofoobar
$ firefox https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/78510
Click Browse... near "Include attachment"
Ctrl+L shows the location entry, if it is already shown then you are already doing something different
Write Examp until the cursors jumps after /, this is mainly random, sometimes it jumps after Exa, sometimes after Examp, sometimes it shows the completion but never jumps. If it doesn't jump, press Ctrl+L and start writing Exa again.
Write f. It autocompletes to Examples/foofoo and places the cursor after the last o
Write b. It autocompletes to Examples/foofoobar
Hit Enter.
The Attachment field shows: /home/manu/Examples/foofoob
Hit the monitor with the head.