Re-stages a staged file (courtesy of @esvinson)

git-restage

gitFiles=$(git status --porcelain | grep "^[ADM\?][AMD] " | sed -e "s|^[ADM\?][AMD] ||")
if [[ -n "${gitFiles}" ]] ; then
  for fname in $gitFiles ; do
    git add --all -- "${fname}"
    echo "Restaging ${fname}"
  done
else
  echo "No files changed"
fi

Personally I use:

gitFiles=$(git diff-index --name-only --cached HEAD)

Just a little bit shorter :)

Thanks for the code though!