How can I quickly switch to the topmost directory in a git project?

code.sh

function rcd {
  prevdir=`pwd`

  until ls -ld .git 1>/dev/null 2>/dev/null
  do
      cd ..
      if [ `pwd` == '/' ]
      then
	  cd $prevdir
	  return
      fi
  done
}

summary.md

Sometimes I'm deeply nested in the directory structure of a git repo and I want to quickly switch to the topmost directory (you know, the one that has a .git subdirectory).

Put this in your .bashrc, run source .bashrc, then run it:

~/project_name/public/stylesheets/widgets $ rcd
~/project_name $ 

tags.json

["bash","git","cd"]

cd git rev-parse --show-toplevel # includes helpful error message