This function is a wrapper for
git_config_global_set. It sets two name/value pairs at
once: name = "user.name" is set to the value of the name
argument, and name = "user.email" is set to the value of the
email argument.
Character. The user name you want to use with 'Git'.
email
Character. The email address you want to use with 'Git'.
overwrite
Logical. Whether or not to overwrite existing 'Git'
credentials. Use this to prevent code from accidentally overwriting existing
'Git' credentials. The default value uses has_git_user
to set overwrite to FALSE if user credentials already exist, and to
TRUE if no user credentials exist.
Value
No return value. This function is called for its side effects.