`.gitattributes` files. Attributes that should affect all repositories
for a single user should be placed in a file specified by the
`core.attributesfile` configuration option (see linkgit:git-config[1]).
+Its default value is $XDG_CONFIG_HOME/git/attributes. If $XDG_CONFIG_HOME
+is either not set or empty, $HOME/.config/git/attributes is used instead.
Attributes for all users on a system should be placed in the
`$(prefix)/etc/gitattributes` file.