_complete_proj() {
        cur="${COMP_WORDS[COMP_CWORD]}"
        opts=$( find -X ~/projects -name ${cur}* -maxdepth 1 -type d -prune  | xargs basename )
        COMPREPLY=( $(compgen -W "${opts}" -- ${cur}) )
        return 0;
}

proj() {
        cd ~/projects/$1
}


complete -F _complete_proj proj