git-track

#!/bin/sh

branch=$(git branch 2>/dev/null | grep ^\*)
[ x$1 != x ] && tracking=$1 || tracking=${branch/* /}

git config branch.$tracking.remote origin 
git config branch.$tracking.merge refs/heads/$tracking

echo "tracking origin/$tracking"

Hi!

I got the problems on the colored shell, that's why made some modifications to your script:

!/bin/sh

If argument is provided

if [ banana$1 != banana ]; then
tracking=$1

Get it from current branch

else
branch=$(git branch 2>/dev/null | grep ^* | awk '{print $2}')
echo "Current branch: "$branch
tracking=$branch
fi

git config branch.$tracking.remote origin
git config branch.$tracking.merge refs/heads/$tracking

echo "tracking origin/$tracking"