[McUsr]

Path expansion, can easily be fixed with something like this in bash: CDPATH=".:..:~:~/Desktop:~/Documents:~/Documents/Prj:~/bin:/usr/local:/usr/local/share:/opt/local"

     for realm in ~/Library/Caches/temporaryitems ~/* ~/Desktop/* ~/Documents/* ~/Documents/Prj/* ~/Library/* ~/Library/Scripts/* ~/Library/
     do
         for folder in $realm
         do
                 if [ -d ${folder} ] 
                 then 
    *             CDPATH="$CDPATH":"$folder"
                 fi
         done
     done

As for completions of git and such, that relies totally upon where you got your completion from. There gotta be better arguments than this, and I am really sure there is.

I am on Mac OsX, and I downloaded and installed bash 4.2, and I have never experienced any problems with that.