7 diff -u "$HERE/mailmap" .mailmap
8 diff -ru "$HERE/remotes" .git
/remotes
11 cp .mailmap
"$HERE/mailmap"
12 cp -a .git
/remotes
"$HERE"
15 cp "$HERE/mailmap" .mailmap
16 cp -a "$HERE/remotes" .git
/.
19 echo >&2 "usage: $0 [compare|save|restore]"