resolve git config contextually (find a .gitconfig in the PWD tree)

git.sh

#!/bin/bash

# Put this script in ~/bin/git.sh and `chmod +x` it
# in your .bash_profile add: alias git=$HOME/bin/git.sh

###### DO NOT USE IT #####
##### it doesn't seem to work properly... git commit still put the wrong git config even if git config say something else ######

function upsearch () {
  slashes=${PWD//[^\/]/}
  directory="$PWD"
  for (( n=${#slashes}; n>0; --n ))
  do
    test -e "$directory/$1" && echo "$directory/$1" && return 
    directory="$directory/.."
  done
}

GIT_CONFIG=`upsearch .gitconfig` git $*