t / t3901-utf8.txton commit setup: convert setup_git_directory_gently_1 et al. to strbuf (7333ed1)
   1: to be sourced in t3901 -- this is utf8
   2GIT_AUTHOR_NAME="Áéí óú" &&
   3GIT_COMMITTER_NAME=$GIT_AUTHOR_NAME &&
   4export GIT_AUTHOR_NAME GIT_COMMITTER_NAME