Bash function to get Git repository' basename.

gistfile1.sh

function git_repository_basename() {
    local _repository_basename

    if [ $(git rev-parse --is-bare-repository) = 'true' ]; then
        _repository_basename=$(basename $(git rev-parse --show-toplevel))
        _repository_basename=${_repository_basename%.git}
    else
        _repository_basename=$(basename $(readlink -nf $(git rev-parse --show-toplevel)))
    fi

    echo ${_repository_basename}
}