vim session file magic

.vimrc

"session magic
function! SaveSession()
    "v:this_session is set (by vim) to the last loaded or saved session file
    if v:this_session != ""
        echo 'Saving session "' . v:this_session . '"'
        execute 'mksession! ' . v:this_session
    endif
endfunction

au VimLeave * :call SaveSession()

vim.bashrc

#!/bin/bash
WHICH_VIM=$(which vim)
function thisBranch() { git branch | grep '*' | awk '{print $2}'; }
function vim() {
  #if we're inside of a git repo do some magic otherwise do what's expected
  if git branch &> /dev/null; then
    mksFile="$(thisBranch).vim"
    vimOpts=""
    vimArgs=""
    if [ -r "$mksFile" ]; then
      vimOpts="-S $mksFile"
    else
      vimArgs="+mks $mksFile"
    fi
    $WHICH_VIM $vimOpts $* "$vimArgs"
  else
    $WHICH_VIM $*
  fi
}