bash autocomplete feature doesn't work when I create function for emacs

Details about my system: I am running Ubuntu 12.04.4 LTS on Oracle Virtual Box 4.3.6, from Windows 8.1 installed on an Asus Laptop. I'm using bash_completion version 1.3 release (I got this from the comments on the /etc/bash_completion file)

I thought bash always did auto complete for files and directories after a command. But after a google search and reading more about the bash_completion thing, I realized that this was different for different commands. But I'm facing a problem with this auto-completion feature of bash when using an alternate way to invoke emacs -nw.

I have defined ee as a function in my ~/.bash_aliases file. I know this is not an alias, but I am just using a function to do what an alias would do:

function ee () {    emacs -nw "$@"}export -f ee

I thought that I could still use tab completion with the ee function if I typed a partial file name. This just doesn't seem to work. Whereas if I typed in emacs -nw followed by a partial file name the tab completion works perfectly. I really don't understand what is missing here. I checked the output of the command complete -p and I get the following for both emacs and ee:

eakangk@eakan-u-vbox:~$ complete -p | grep 'ee'complete -F _filedir_xspec eeeakangk@eakan-u-vbox:~$ complete -p | grep 'emacs'complete -F _filedir_xspec emacs

Wouldn't that mean both commands should give me the same sort of behaviour when attempting auto completion?Edit: I hadn't seen the ee line in the /etc/bash_completion file when posting the question. But now I know it is there. But the /etc/bash_completion file has the following lines:

complete -f -X '!*.@(gif|jp?(e)g|miff|tif?(f)|pn[gm]|p[bgp]m|bmp|xpm|ico|xwd|tga|pcx)' eecomplete -f -X '*.@(o|so|so.!(conf)|a|[rs]pm|gif|jp?(e)g|mp3|mp?(e)g|avi|asf|ogg|class)' vi vim gvim rvim view rview rgvim rgview gview emacs xemacs sxemacs kate kwrite

What am I doing wrong here?