t / t3901-8859-1.txton commit update-ref --stdin -z: deprecate interpreting the empty string as zeros (1fbd504)
   1: to be sourced in t3901 -- this is latin-1
   2GIT_AUTHOR_NAME="Áéí óú" &&
   3GIT_COMMITTER_NAME=$GIT_AUTHOR_NAME &&
   4export GIT_AUTHOR_NAME GIT_COMMITTER_NAME